Early in the neolithic age, when Chinese civilization began, Chinese ancestors learned to burn and use pottery. Among the five thousand years of splendid Chinese civilization, ceramic culture is the most dazzling and representative with Chinese characteristics.

Ceramics Light up Art Life

porcelain crafts

Today, China is still famous for its “porcelain”, which is not only an exquisite handicraft, but also contains rich cultural connotation. How are ceramics made? In the past, it was mainly the traditional drying method, but now, with the continuous progress of the society, the drying method of ceramics is also improving, the use of microwave drying equipment for industrial ceramics has become the trend of the times.

Advantages of ceramic microwave drying equipment：

1. Uniform heating

Ceramic microwave drying equipment has the characteristics of selective heating, which can be used to achieve uniform heating and drying. The ceramic produced has good color and beautiful appearance.

1. Reliable quality, long service life

Using imported parts, high quality equipment, long service life. The quality of ceramic produced by ceramic microwave dryer is also guaranteed.

1. High efficiency and energy saving

Microwave is directly on the material, so there is no additional heat loss, the air in the furnace and the corresponding container will not heat, so the thermal efficiency is very high, the production environment is also significantly improved.

1. Short drying time

Because microwave heating does not need the process of heat conduction, so the microwave penetrates the object from different directions into the interior of the object, the ceramic dryer from inside to outside makes the material achieve uniform drying in a very short time, effectively reducing the drying time.

1. Safe and environmental protection, no pollution

Using electrical separation technology, no electric shock or leakage, flammable fire and other hazards, ceramic dryer uses clean energy materials, no pollution to the environment, achieve zero pollution emissions.

Ceramic microwave drying equipment

Difference between traditional drying method and ceramic microwave drying equipment：

The traditional drying of porcelain parts generally adopts the hot air drying method. When the outside is heated, the surface is dried first, and then heat is transferred to the inside gradually to dry the inside of porcelain parts. The thermal efficiency is low and the drying time is long. However, microwave drying is a drying process in which ceramic parts absorb microwave heat. Moreover, water is a polar material with strong wave absorbing ability, which absorbs a large amount of microwave and heats up and evaporates. Therefore, it is uniformly dried with high thermal efficiency and short time.

Characteristics of microwave drying technology:

1.Extremely high heating efficiency, the heating time is only 1/3~1/10 of the traditional way.

2.Unerring overall heating

3.Save up to 40% more energy.

4.A rapid and uniform sintering or synthesis process.

5.Lower sintering temperature, synthesis temperature.

6.Get finer material structure, higher quality products.

7.Reduce material sintering or synthesis atmosphere requirements.

8.High degree of controllability, high precision atmosphere and temperature control can be achieved.

Working principle of ceramic microwave drying equipment：

Electromagnetic microwave ceramics microwave drying equipment is the use of strong field produced by the high temperature for overall uniform heating, heating up fast, heating control research and development of high temperature heating equipment, heated objects can fully ensure the quality, the high energy utilization rate, equipment covers an area of small, diversification can small batch processing, but also can be used for industrial scale continuous batch production. Compared with traditional electric heating furnace, coal kiln, gas heating, steam is more energy saving, rapid heating, balanced heating, environmental protection, high efficiency.

schematic diagram

In order to keep up with the trend of the times, Leader Microwave Equipment Company is devoting itself to the development of Microwave industry. At present, the company’s ceramic microwave drying equipment, microwave drying equipment for vegetables, green tea microwave drying equipment are very popular, has been widely praised.

Chinese people have always been fond of using ceramic products, from the most common everyday utensils to exquisite art treasures. No matter aristocrats or civilians, ceramic are inseparable from life. It has become a national classic symbol in Chinese culture. The beauty of ceramics lights up our art life!

Ceramics Light up Art Life

With the improvement of living standard, there are more and more foodies around us. Many people like eating taro very much. The taro itself has a unique aroma, and it tastes delicious, of course, sweet taro also has a lot of benefits, sweet taro contains a lot of nutrients, can be absorbed by the human body, and form immune globulin, so that the human body to improve resistance.

Application of Microwave Drying Equipment for Sweet Taro

A lot of people like to eat dried taro, so manufacturers will be on sweet taro dry processing. The equipment used is the microwave drying equipment of sweet taro produced by Leader Microwave Equipment company.

taro

Advantages of microwave drying equipment for sweet taro：

1. Achieve no pollution and uniform drying of fragrant taro, at the same time can greatly reduce the drying temperature

In the drying process of taro, the microwave generated by the taro microwave drying machine can directly dry taro, drying is very uniform, and without any pollution, at the same time because it is not the traditional way of heating drying, so it can greatly reduce the drying temperature, maintain the nutrition and taste of taro.

1. The drying rate is usually increased several times and the production efficiency is greatly improved

The microwave drying method adopted by the microwave drying machine of sweet taro usually takes only a few minutes, so that the production efficiency can be greatly improved.

1. Drying energy consumption is usually reduced by more than 50%

The problem of environmental protection is increasingly severe, only environmental protection manufacturers can go to the long term, and microwave drying equipment in the use of the process only consume a small amount of electricity, dry energy consumption can be reduced by more than 50%.

1. Realize safe and clean production

Customers want to buy food that is safe and reassuring. Sweet taro produced by microwave drying machine, very clean, can let customers rest assured to buy.

Application of Microwave Drying Equipment for Sweet Taro

1. Simple operation

Manufacturers want to be able to produce products on a large scale, but it can’t be realized if the machine is difficult to operate, while microwave drying machine is very simple to operate, ordinary workers can control the machine, so as to achieve mass production and increase profits.

Microwave drying equipment for sweet taro

Technical parameters of microwave drying equipment for sweet taro：

Input power	Three-phase five-wire 380V±10% 50Hz±1%
Output microwave power	12kW（power adjustable）
Microwave frequency	2450MHz±50Hz
Nominal input apparent power	≤17kVA
Overall dimensions（Length x width x height）	8500×1050×1750mm
Working environment	0～40℃、Relative humidity≤80%
Transmission speed	0.1～5m/min
Transmission band width	300mm
Height of inlet and outlet	120mm
Drying sterilization chamber size	Depth 700* height 900* width 600mm

Taro food

The difference between sweet taro microwave drying equipment and traditional drying method：

1. Efficient

Production efficiency is very important to manufacturers, high efficiency means high profit, sweet taro microwave drying equipment can produce high-quality sweet taro in a short time, and the traditional drying method consumes a long time, can not improve production efficiency.

2.Sanitary quality

Traditional taro drying method is generally manual operation, this process will cause taro health problems, and taro microwave drying equipment to avoid manual operation, can ensure the health quality of taro.

3.Follow-up processing

If fragrant taro can directly enter the next stage of processing after drying, production efficiency can be improved and profits can be increased. Traditional drying methods cannot timely transport fragrant taro for the next stage, while fragrant taro microwave drying equipment can do this.

With the growing market demand of taro, taro microwave drying equipment market prospects are more and more broad, it is worth mentioning that microwave technology is also recognized by more and more people, such as frozen seafood microwave defrost equipment, tea microwave drying equipment, jujube microwave drying equipment, market demand is very large. With the development of science and technology, as long as we set sail with the wind, the future life will be better and better.

If Chinese herbal medicine, food, fruits and vegetables and other agricultural and sideline products cannot be dehydrated in time after harvest, it will lead to decay and deterioration, which will degrade the quality and affect the storage and normal use.

Chinese herbal medicine/tea

Intelligent microwave continuous drying machine can detect temperature, moisture content, drying rate and humidity in drying chamber during drying in real time.According to the requirements of drying process, automatically adjust the output power, belt speed and wind speed during drying.And it can draw drying characteristic curve, temperature characteristic curve, humidity change curve in drying chamber and data statistical analysis automatically, which has far-reaching significance.

Intelligent Microwave Continuous Drying Machine

 Compared with traditional microwave continuous dryer, intelligent microwave continuous dryer has many advantages：

1.The intelligent microwave continuous drying equipment avoids the problem that the drying temperature is too high, material quality reduces and more energy consumption due to the temperature control lag.

2.The intelligent microwave continuous dryer avoids the problems of high humidity, decreasing drying efficiency and increasing energy consumption due to the lag of humidity control.

3.The intelligent microwave continuous drying machine improves the precision of moisture control and avoids the problems of too low moisture content of materials caused by water control lag, which leads to the increase of drying energy consumption and decrease of drying efficiency.

4.The intelligent microwave continuous dryer adopts the method of dynamic optimization of drying process parameters to ensure drying efficiency and quality of materials after drying, and greatly reduce drying energy consumption and cost.

5.Microwave continuous dryer improves the degree of drying automation, reduces the labor intensity of material drying operation, and greatly reduces the drying cost.

Intelligent microwave drying machine

The structure of intelligent microwave continuous drying machine：

Intelligent microwave dryer is composed of rack, conveyor belt, conveyor belt wheel, drive motor and instrument control box and computer.At both ends of the conveyor belt, there are feeding and discharging hoppers.The conveyor belt passes through a plurality of microwave drying Chambers with doors, and the microwave magnetron infrared temperature sensor, temperature and humidity sensor and fan are installed in each microwave drying chamber.

Structure diagram of intelligent microwave continuous drying machine

Feed hopper 1, moisture sensor 2, speed regulating fan 3, far-infrared temperature sensor 4, humidity sensor 5, microwave magnetron 6, box door 7, handle 8, instrument control cabinet 9, material surface temperature display instrument 10, air temperature and humidity indicator 11, fan switch 12, moisture indicator 13, frequency conversion speed control indicator 14, conveyor belt 15, conveyor belt wheel 16, discharge hopper 17, moisture sensor 18, adjustable deceleration motor 19, power switch 20, Magnetron power adjustment switch 21, magnetron working time adjustment switch 22, conveyor belt motor switch 23, frame 24, guard plate 25

 Technical parameters of intelligent microwave continuous drying machine：

Brand	Leader	Gross power	30KW/h
The daily capacity	8T-10T	Leakage value	≤3mw/m³
Drying capacity	300-400kg/h	Mcrowave frequency	2450/915MHz
Heating method	Electricity	Speed of conveyor belt movement	0~5m/min
Microwave output power	0-2.1kw	Rotate speed of fan	0-1000rn/min
Cooling method	Water cooling	Working method	Completely continuous

The drying process of intelligent microwave continuous drying machine：

1.Before drying, according to the type of dry material selected by the user and the measured moisture content of the material in the hopper, the control system of the intelligent microwave continuous dryer will automatically recommend the optimized drying process curve and the initial value of microwave magnetron output power, fan speed and conveyor belt speed of each drying chamber.

Optimization drying process curve refers to three curves: moisture content with time curve, temperature with time curve, humidity with time curve.The operator can reset the initial value of each parameter according to specific requirements.And establish a new drying process curve, as the material drying process curve.

2.During the drying process, the control system continuously adjusts the drying control parameters according to the pre-selected optimized drying process curve: microwave magnetron output power, fan speed, conveyor belt movement speed, and the material moisture content, temperature, humidity in the drying chamber and other parameters to maintain a certain accuracy range.

our services：

1.Intelligent microwave continuous dryer warranty period of one year.

2.The company’s online service system and service hotline 24 provide services for customers.

3.The company can according to the customer’s actual conditions to manufacture special specifications of intelligent microwave continuous dryer, meet a variety of production needs.

Customer Visit

Leader Microwave Equipment Company has been adhering to the principle of customer first for many years. We are committed to producing efficient, energy-saving and environment protection equipment. Provide thoughtful and meticulous pre-sale and after-sales service.Therefore, we have won the favor of many investors at home and abroad, the equipment is exported to America, Africa, southeast Asia and other places. If you are interested in our equipment, please feel free to contact us.

Intelligent Microwave Continuous Drying Machine

Traditional heating or drying involves convection and radiation combined with gas or resistance heating. It is commonly used in the manufacture of ceramic materials to dehumidify ceramic green body. However, the heating rates associated with these conventional heating methods, temperature control and heat applications often result in high energy consumption and unstable product quality.

Ceramic Green Body Microwave Drying Equipment

Industrial heating by microwave radiation has been used to accelerate the drying of ceramic green bodies. Compared with conventional heating, ceramic green body microwave drying equipment provides a higher heating rate, it is faster than conventional drying due to the direct heating of the ceramic body by the interaction of microwave energy with the ceramic green body.

Ceramic

 Advantages of ceramic green microwave drying equipment:

1.Ceramic green body ceramic green body microwave drying equipment is made of microwave impervious non-magnetic material at side wall, top and bottom of equipment. It can exhibit high conductivity and oxidation resistance in the temperature range of 200 °C.

2.The inlet and outlet of the microwave heating chamber are provided with a cover to reduce radiation leakage in the microwave heating chamber.

3.The microwave heating chamber is multi-module so that the microwave heating chamber can support multiple resonance modes within a predetermined microwave frequency range.

4.The microwave heating chamber includes a mode agitator to provide a uniform electric field distribution within the microwave heating chamber.

5.The microwave source can change the power of transmitting microwaves up to about 200 kW. For example, the microwave source can generate microwave energy having a power of from about 30 kW to 60 kW and a frequency of from about 20 MHz to about 5000 MHz. Such a magnetron can generate microwave energy sufficient to rapidly raise the temperature within the ceramic green body to a drying temperature in only 1 to 10 minutes.

6.Microwave drying ceramic green body equipment has precise temperature control. The transmission power sensor and the reflected power sensor have a microwave power sensor with an error of about ± 5%.

7.Input device of ceramic green body microwave drying equipment is a keyboard that can be connected to the PLC so that the operator can manually input the weight of the ceramic green body. The measuring device sets the transport system can weigh each ceramic green body when the ceramic green body enters the microwave heating chamber to know the total weight of the ceramic green body in the microwave heating chamber at any time.

8.The PLC can adjust the power and/or frequency of the microwave energy generated by the microwave source. For example, when the geometry and material composition of the ceramic green body are input to the input device, the PLC 122 can increase or decrease the microwave power.

Ceramic Green Body Microwave Drying Equipment

Compositions of ceramic green body microwave drying equipment:

Ceramic green microwave drying equipment generally includes a microwave heating chamber, a microwave source, a transmission power sensor, a reflective power sensor and a programmable logic controller.

Schematic diagram 1 of ceramic green body microwave drying equipment

Schematic diagram 2 of ceramic green body microwave drying equipment

Ceramic green microwave drying apparatus 100, microwave heating chamber 102, side wall 104, inlet 106, outlet 108, top 110, microwave source 112, circulator 114, transmission power sensor 116, reflected power sensor 118, programming logic controller (PLC) 122, transport system 124, ceramic green body 126, electrical lead 128, electrical lead 132, input device 138, microwave energy 140, microwave energy 142, temperature sensor 150, detector 154, electrical lead 156, microwave drying test equipment 200, Microwave heating chamber 202, microwave source 212, circulator 214, power sensor 216, waveguide 218, circulator 220, control unit 222, fiber temperature probe 224, metered water 226, data acquisition system 228, microwave source 240, reflection Microwave energy 242

Working principle of ceramic green body microwave drying equipment:

Microwaves have electromagnetic field energy. Microwave heating is an extremely high-frequency electromagnetic oscillation that acts on the material molecules with electrodes, causing the molecular arrangement to change dramatically, resulting in a fierce “friction”-like effect. Make the object hot. This process converts the electromagnetic field energy of the microwave into thermal energy. Water molecules are polar molecules that strongly absorb microwaves. When the moisture-containing material is subjected to microwave radiation of sufficient field strength, the water molecules absorb the microwaves and quickly evaporate and the materials are quickly dried.

 Specifications of ceramic green body microwave drying equipment:

12kw Ceramic green body microwave drying equipment

30kw Ceramic green body microwave drying equipment

50kw Ceramic green body microwave drying equipment

Customizable higher power ceramic green body microwave drying equipment

 The following is the basic information of the common models of ceramic green body microwave drying equipment:

Model	DL-12KW	DL-30KW	DL-50KW	DL-80KW
Microwave frequency	2450/915MHz	2450/915MHz	2450/915MHz	2450/915MHz
Output power	12KW	30KW	50KW	80KW
Transmission speed	0-5m/min	0-5m/min	0-5m/min	0-5m/min
Leakage value	≤3mw/m³	≤3mw/m³	≤3mw/m³	≤3mw/m³
Size（mm）	7000x840x1800	10500x840x1800	12500x1200x1800	15000x1400x1800
Drying ability	120-150kg/h	300-400kg/h	500-600kg/h	800-1000kg/h

Remarks: Ceramic green body microwave drying equipment will be designed according to customer requirements, with different parameters.

Our service:

We have prepared a complete testing facility to design a ceramic green body drying equipment site plan, install equipment mainframes, auxiliary machines, guide and train employees. The solutions we offer are highly targeted and can save you a lot of time while saving effort.

Customer visit

In short, our company is committed to providing you with quality and practical equipment (such as ceramic microwave drying equipment) and fast service. We have received a lot of praise from customers. In our country, we have a lost of customers who come from Guangdong, Inner Mongolia, Yunnan and other places. At abroad, many countries and regions such as Saudi Arabia, Tanzania and Qatar also have our Leader Microwave Equipment Company staff. We are always welcome to visit our company for testing and cooperation!

Ceramic Green Body Microwave Drying Equipment

The drying methods for the tannery sludge in existing technologymainly include a natural drying method and a vacuum drying method. The natural drying method has the advantages of low investment and low energy consumption. It is practical for small tanneries located in rural areas that have abundant sunshine. However, the defects are low dehydration efficiency, long drying cycle, large occupied area, attracting insects and having stink.when the sludge is laid at a thick thickness, it cannot be satisfactorily dried. In addition, this drying method is also susceptible to natural climatic conditions. In vacuum, it is very difficult to transfer heat through convection and only be conducted, so the vacuum drying method has the disadvantages of slow heating rate, long drying period and high energy consumption.

Continuous Microwave Hot Air Combined Drying Equipment

The continuous microwave hot air combined drying equipment produced by Leader Microwave Equipment Company is energy efficient.

Tannery sludge/tanner sludge contaminated land

 Advantages of microwave hot air combined drying equipment:

1. Energy saving and efficient.

The microwave hot air drying equipment adopts radiation energy transfer, which is the overall heating of the medium, without other heat transfer medium, high speed, high efficiency, greatly shortened drying cycle and reduced energy consumption. Compared with conventional drying technology, it can increase the work efficiency more than four times.

2. Heat evenly.

Since the microwave heating is simultaneous heating inside and outside the material, the temperature difference between the inside and outside of the material is small, and the inconsistency between the inside and the outside of the heating in the conventional heating is not caused, the drying quality of the continuous microwave hot air combined drying equipment is greatly improved.

3. Easy to control.

Due to the rapid adjustment of microwave power and the characteristics of inertialessness, the continuous microwave hot air combined drying equipment is easy to control in time, which facilitates the adjustment and determination of process parameters.

4. Large capacity.

continuous microwave hot air combined drying equipment saves time and improves work efficiency.

5. Product safety and hygiene.

The continuous microwave hot air combined drying equipment has the functions of disinfection and sterilization, can prevent mildew, phlegm and prolong the shelf life.

6. Environmental protection.

Continuous microwave hot air combined drying equipment does not produce three wastes – waste gas, waste water, waste residue.

7. Energy saving.

Due to the double-layer conveyor belt, the equipment footprint can be minimized, and the absorption load in the microwave drying sterilization box can be increased. Continuous drying equipment is more conducive to microwave matching so that energy can be fully utilized.

 Different types of continuous microwave hot air combined drying equipment:

48kw Continuous microwave hot air combined drying equipment

80KW Continuous microwave hot air combined drying equipment

120kw Continuous microwave hot air combined drying equipment

Customizable higher power continuous microwave hot air combined drying equipment

 As a professional manufacturer, we offer many types of microwave-hot air dryers, you can see their detailed parameter information from the table below:

Model	DL-48KW	DL-80KW	DL-120KW
Microwave frequency	2450/915MHz	2450/915MHz	2450/915MHz
Output power	48KW	80KW	120KW
Transmission speed	0-5m / minute（adjustable）	0-5m / minute（adjustable）	0-5m / minute（adjustable）
Leakage value	≤3mw/m³	≤3mw/m³	≤3mw/m³
Size（mm）	7000x840x1800	10500x840x1800	12500x1200x1800
Drying capacity	120-150kg/h	300-400kg/h/td>	500-600kg/h

Remarks: Various types of continuous microwave hot air combined drying equipment can be customized according to user requirements.

Working principle of continuous microwave hot air combined dryer:

Microwave is a non-ionizing electromagnetic energy that propagates at a speed of light of 3 x 105 km per second with a frequency range of 3X102 to 3X105 MHz. The dissipation of the sample by microwave is achieved by two mechanisms of dipole molecular rotation and ion conduction. The molecules move by ion migration and rotation of polar molecules, but do not cause changes in the internal structure of the molecules. The molecules of the substance to be converted from a relatively static moment to a dynamic, that is, after the polar molecules receive the energy of the microwave radiation, the thermal effect is generated by the molecular dipole rotating at a high speed of several billion times per second. Water is a typical polar molecule, which has strong dissipation and absorption of microwaves. The temperature in the electromagnetic field rises rapidly. Therefore, the moisture in the tannery sludge can be rapidly heated and evaporated by microwave irradiation. The hot air device uses electricity as an energy source to heat the air in the blower.The circulating hot air takes the moisture evaporated from the microwave out of the oven from bottom to top.

Schematic diagram 1 of continuous microwave hot air combined drying equipment

Schematic diagram 2 of continuous microwave hot air combined drying equipment

Hopper 1, lifting belt 2, speed regulating motor 3, lower hopper feeder 4, upper conveyor belt 5, lower conveyor belt 6, hot air device 7, microwave tube 8, microwave housing 9, dehumidification device 10, microwave suppressor 12 , guide plate 13, circulating water cooling device 14

Working process of continuous microwave hot air combined drying equipment:

The raw material is lifted from the hopper through the lifting belt to the lower hopper auxiliary device. The material is evenly laid on the upper conveyor belt by the lower hopper auxiliary device; the microwave box body is simultaneously subjected to microwave and hot air heating treatment. The material reaches the discharge end of the upper conveyor belt, the material is evenly laid on the lower conveyor belt by the guide plate and enters the microwave casing again. When the dried material reaches the discharge end of the lower conveyor belt, the material is introduced into the feeder by the discharge guide plate.

Our service:

1.Continuous microwave hot air combined drying equipment is equipped with 1 year warranty and lifetime maintenance service. During the warranty period, if the user encounters problems in accordance with the normal process, our company will provide free repair service. In addition to the warranty period, our company’s repair service will charge the cost of replacement parts.

2.This includes consulting before purchasing equipment and technical issues after purchasing equipment.

3.We are equipped with equipment maintenance and repair information database. It escorts the normal operation of user equipment all the time.

Continuous microwave hot air combined drying equipment customer visit

For many years, our Leader Microwave Equipment Company’s continuous microwave hot air combined drying equipment and ceramic green body microwave drying equipment have been exported to the Middle East, Europe and the United States and other countries and regions.The equipments are highly recognized by foreign customers. Sincerely welcome investors to consult or visit the trial to discuss cooperation.

Continuous Microwave Hot Air Combined Drying Equipment

Microwave drying is different from the traditional drying method in that the heat conduction direction is the same as the water diffusion direction. Compared with the traditional drying method, the microwave dryer has the advantages of large drying rate, environmental protection and energy saving, high production efficiency, uniform drying. It is easy to implement automation control and improve product quality, so it is widely used in various fields. At present, microwave drying technology is now used in food industry, material chemical industry, pharmaceutical industry, mineral mining industry, ceramic industry, laboratory analysis, wet natural rubber processing and many other aspects.

Multi-layer Tunnel Microwave Chinese Medicine Pill Dryer

Chinese medicine pill

The multi-layer tunnel type microwave Chinese medicine pill dryer is designed for multi-layer tunnel type, multi-layer drying, one layer cooling, and layer-to-layer inversion to ensure the quality of the product to the greatest extent.

 Advantages of multi-layer tunnel type microwave Chinese medicine pill dryer:

1. Multi-layer tunnel type microwave Chinese medicine pill dryer has high heating uniformity and good material drying effect.

2. Multi-layer microwave Chinese medicine pill dryer can effectively reduce the energy loss of energy, and greatly improve the working efficiency of the equipment, the equipment runs stably, and ensures the product quality.

3. Multi-layer tunnel type microwave Chinese medicine pill dryer Chinese medicine pill dryer adopts multi-port feeding mode. Microwave electromagnetic field is fed from above each layer of material so that the material can directly receive the energy of electromagnetic field. Compared with the existing simple reactive loss from the side or other methods, it has high heating efficiency, the heating performance reaches 2-3 times of other feeding modes.

4. The cold air is sent from the outside, and the heat generated in the cabinet is discharged, which effectively prevents the appliance from overheating and maintains the temperature environment of the production workshop.In order to make the heat dissipation timely, the heat sources are separately set to ensure the air convection space is smooth.

Multi-layer tunnel type microwave Chinese medicine pill dryer

Structural composition of multi-layer tunnel type microwave Chinese medicine pill dryer:

The multi-layer tunnel type microwave Chinese medicine pill dryer includes three parts: material transfer equipment, microwave drying system and control cabinet.
Material transfer equipment

The material transfer equipment includes a material lifting device set at the feed inlet of the dry chassis and a multi-layer transfer tunnel disposed in the dry chassis, the material transfer belt is set in the transfer tunnel, the multi-layer transport tunnel includes several layers of drying layer and a layer of cooling In the layer, the top of the tunnel of the drying layer is provided with a microwave feed port, the cooling layer is connected with the refrigeration device.

Microwave drying system

1.The microwave drying system includes a microwave generating cabinet that is set on a back side of the drying machine, a power generating system and a microwave generator are arranged in the microwave generating cabinet. The microwave generator is connected to the microwave feed port of the drying layer through a waveguide, and a microwave suppressor is arranged between the microwave generating cabinet and the drying cabinet. The microwave generator is connected to the microwave feed port of the drying layer through a waveguide, and a microwave suppressor is arranged between the microwave generating cabinet and the drying cabinet.

2.The bottom of the microwave generating cabinet is provided with an air inlet, the top is provided with an air outlet, and the air inlet is connected with the exhaust fan.

3.The microwave generating cabinet includes a plurality of heat source devices such as a high frequency capacitor of a microwave generator (magnetron) and a power supply system, a high voltage silicon stack and a solid state relay.

4.The first and last ends of the transmission belts in the transmission tunnel are laterally staggered so that the material can be dropped from the upper conveyor belt layer by layer to the lower conveyor belt until it is output from the discharge port.

5.There is an infrared temperature probe inside the transmission tunnel, which can reflect the instantaneous temperature of the material when it is heated, and can be directly displayed through the display table.

6.A plurality of microwave turbulence observation doors are provided on the front side of the drying cabinet for real-time monitoring of material drying conditions. The drying cabinet is equipped with an independent dehumidification system to forcibly discharge water vapor generated by microwave heating to prevent condensation of hot contaminants.

Control cabinet

The control cabinet is equipped with PLC control system, touch screen and infrared thermometer linkage automatic control system. A vibrating hopper and a distributor are provided on the inlet of the dry casing to ensure that the material can be continuously squatted and evenly distributed on the conveyor belt in the same width.

Structure sketch 1 of multi-layer tunnel type microwave Chinese medicine pill dryer

Material lifting device 10, vibrating hopper 11, microwave suppressor 4, drying cabinet 2, equipment rack 22

Structure sketch 2 of multi-layer tunnel type microwave Chinese medicine pill dryer

Exhaust hood 21, exhaust vent 31, microwave feed port 34, microwave generator 33, refrigeration unit 35, air inlet 32

 Technical parameters of multi-layer tunnel type microwave Chinese medicine pill dryer:

Daily capacity	8T-10T	Leakage value	≤3mw/m³
Total power	30KW/h	Microwave frequency	2450/915MHz
Heating method	Electric	Cooling method	Cooling method
Drying capacity	300-400kg/h	Working method	Completely continuous
Transmission bandwidth	About 600mm

Drying principle of multi-layer tunnel type microwave Chinese medicine pill dryer:

Microwave drying is a kind of dielectric drying. During the dielectric drying process, heat is generated inside the material. The mass transfer driving force is mainly the vapor pressure gradient generated quickly inside the material. Compared with ordinary drying heated by hot air and steam, the main advantage of microwave drying is high energy efficiency and non-destructive to materials (drying at lower ambient temperature, no high surface temperature is required), other volatile substances lose less and have a uniform effect (can form a more humid field and humidity distribution), dry quickly (drying time can be shortened by more than 50%).

Order multi-layer tunnel microwave dryers and intelligent microwave continuous dryers, you will enjoy the following services:

1.A one-year warranty.The Leader Equipment Company will solve non-artificial fault and technical issues for you free of charge.Only the cost of replacement parts will be charged for the problems caused by human factor

2.24-hour online service system and offline service hotline can introduce equipment for new customers, and also provide technical support for customers who have purchased our equipment

3.As an experienced equipment supplier, our cooperative transportation is also reliable. In addition, our packaging is very safe.

Brazilian customer visit

Our equipment and services are excellent. Many customers at home and abroad choose us. You can bring our raw materials to our company tests equipment until we can help you find the most satisfactory production plan and look forward to your news.

Multi-layer Tunnel Microwave Chinese Medicine Pill Dryer

In the finishing process of printing and dyeing, the drying of textiles is an important process in the whole process.Its drying effect has a significant effect on the final product color, intensity, pomeness, etc.Therefore, drying technology has become the research focus of textile printing and dyeing industry.

Microwave Drying of wool tops

At present, the drying methods of domestic textile dyeing and finishing industry are mainly divided into hot air drying and radio frequency drying.Hot air drying has the advantages of low cost and low maintenance cost, but the drying time is long, the efficiency is low, the products tend to yellowing and embrittlement after drying.

During the drying process, the temperature is difficult to be accurately controlled and the phenomenon of over-drying is easy to occur, which causes the quality problems such as uneven moisture content after drying, and brings many inconvenience to the subsequent process.Radiofrequency drying is to use high-frequency electric field to convert the electric energy between the plates into the heat energy of drying materials, thus completing the drying process of materials.

Its unit energy consumption is high, the equipment maintenance cost is high in the later period, the main components of the electronic tube service life of 5000h ~ 6000h, the replacement cost is about 65,000 yuan, resulting in the equipment in the later period of operation and maintenance investment is huge, not consistent with the textile printing and dyeing industry energy saving and emission reduction trend.

Microwave heating is a new drying technology which develops rapidly and has great potential in recent years.Microwave heating has the advantages of high efficiency, energy saving, low temperature, even drying and no thermal inertia, and the magnetron has been industrialized production, convenient maintenance and replacement, low maintenance cost, replacement cost is about 20,000 yuan.

Microwave heating has been widely used in chemical industry, fruits and vegetables, building materials, medicinal materials and other industries.Due to the variety of fiber fabrics and the complexity and multi-factor of weaving dyeing and finishing, microwave heating is developing in the textile printing and dyeing industry.

In the worsted industry, top rewashing is a necessary process.The existing methods of drying are steam drying,low efficiency,high temperature and great damage to fiber quality,it becomes the bottleneck factor that restricts the rewashing process of wool tops.

In this paper, microwave drying equipment is used to dry the top, which improves the drying efficiency and product quality of the top, studies the drying efficiency and drying effect of the microwave drying equipment, and provides a certain research basis for the promotion and application of microwave heating in the textile dyeing and finishing industry.

Principle of Microwave Heating：

Microwave is a kind of electromagnetic wave with penetrability in the frequency of 3.0×102 ~ 3.0x105mhz, whose direction and size change periodically at any time.When the electromagnetic wave penetrates the water-bearing material with 915MHz or 2450MHz (only 915MHz and 2450MHz are allowed in China’s industrial heating).Because water molecules are polar molecules, the polarity of water molecules in materials changes at 91.5 billion and 245 billion times per second.

Due to the irregularity of molecular thermal motion and the extremely high regular change of polarized molecules, the heat effect similar to friction is generated between molecules, making the heat evenly and simultaneously occur from all parts of the material in a very short time.The sharp rise in temperature forces the water molecules inside the material to vaporize and diffuse to evaporate, and the material dehydrates quickly to achieve the purpose of drying.

Putting the wool top into the KH-80HPTN10 tunnel-type microwave dryer with the microwave frequency of 2450MHZ and the microwave output power of 80KW.An electronic balance with weighing accuracy of ±0.1g was used to record the changes in the quality of the wool top during the drying process, and to calculate the changes in the moisture content. Then, the drying efficiency of the microwave dryer was calculated according to the water loss of the wool top.

In order to prevent overdrying, we need to adjust drying time and other process parameters, microwave drying is carried out in different stages to improve the drying efficiency of microwave dryer in each stage.In the initial stage of microwave heating, the low drying efficiency is caused by the high moisture content of the material and the low energy state of water molecules that need to absorb part of the microwave energy to make them evaporate.

With the decrease of water content and the increase of water molecular energy state, microwave drying efficiency is improved.The average drying efficiency of the whole drying process is 1.18kg/(kW·h), so the drying efficiency of the microwave dryer can be 1.1 kg/(kW·h) when calculating the drying process parameters.

According to the comparison of many experiments, when the moisture content of the wool top is below 30%, the drying efficiency is the highest and the economic benefit is the best.

The microwave drying principle and mass transfer and heat transfer process of the hair top were analyzed. The microwave drying equipment developed by ourselves was used to dry the hair top of different forms and the experimental results were analyzed. The experimental results showed that:Microwave drying technology can be applied to the drying of wool tops, which can realize the continuous and efficient drying of wool tops, and significantly improve the drying efficiency and quality.

When the whole fleece coil is dried, the internal temperature of fleece coil is higher than 80℃, and the surface condensation is obvious;When loosely dried, the top surface feels fluffy, the temperature is below 40℃, and the energy consumption of multi-layer (6-8 layers) drying is lower than that of single-layer drying.

Microwave dryer has shorter time, lower temperature and better drying effect than traditional drying equipment.This is because in the process of microwave heating,because the surface is easy to dissipate heat, the internal temperature is often higher than the external temperature, and the direction of temperature gradient is the same as that of moisture gradient, and the direction of heat and mass transfer is the same, which promotes the rapid evaporation of internal moisture and the formation of internal pressure gradient, so that the moisture quickly diffuses to the surface and evaporates.

The higher the working frequency of microwave, the more microwave power absorbed by the material per unit time, which can timely compensate the heat taken away by evaporation of moisture and make the energy absorption more effective.The faster the temperature rises, the faster the drying rate, and the shorter the drying time, ensuring the natural quality of the fiber is not damaged to the maximum extent.

Due to the transfer of water vapor from the inside to the outside, the inner layer of the fiber has greater dynamic performance of steam pressure, and the internal transpiration of water is similar to the effect of steaming yarn, so the strength of top fiber is improved. After drying, the color difference before and after the product color is small, feel fluffy, soft, and fiber elasticity is good.

Microwave heating effectively solve the problem of the traditional drying resources consumption, improve the drying efficiency and product quality, realize the greening of textile production, conform to the textile printing and dyeing industry, the development trend of energy saving and emission reduction is steam drying, rf drying technology to upgrade again, will be to transform traditional industries, improve the equipment level of the enterprise, has a broad application prospect.

As a new drying method, our research on microwave heating of materials is not deep enough. To give full play to the advantages of microwave heating, we must do more extensive and in-depth research.

(1)Understanding the influence of material characteristics on microwave heating, and realize quantitative research.

(2)Strengthen the comprehensive research and development of microwave heating technology of various materials and microwave heating equipment to realize the on-line detection and control of microwave heating.

Microwave Drying of wool tops

Chrysanthemum tea is one of the top ten famous scented tea in China. Chrysanthemum tea is suitable for drinking all the year round and quite popular among people. Common drying equipment is difficult to meet its requirements, even if the drying requirements are met but output can not go up, so many enterprises choose industrial microwave drying machine for fast drying.

Microwave Drying Experiment of Chrysanthemum

Mr. Yu, from hangzhou, zhejiang province, is the owner of a factory that makes deep processing of chrysanthemums. Hang baiju is planted in large quantities around the factory. Come to the season that chrysanthemum comes on the market in great quantities immediately, Mr. Yu brings sample to the factory to visit experiment. Customers brought fresh hangbaiju. Customer requirements to ensure that after drying chrysanthemum still has medicinal value, and still maintain a better color.

The fresh chrysanthemum water content is higher, among which the petal part water content is less, the organization is delicate, easy to dry. And flower head part of the water content is particularly large, up to 80%, and the organization is older, not easy to lose water, also chrysanthemum flower head is a very uneven medicinal material. Dried chrysanthemum is mostly used for tea drinking, with strong and sweet taste, original color, original sample characteristics, this requires drying after ripening, strong drying of flower head and weak drying of flower petal. At present, the traditional drying process of drying after steaming is not only dependent on the weather, but also causes excessive drying of the petals, petals fall off, the quality of the chrysanthemum after drying is not high.

The microwave oven used in this experiment has a maximum frequency of 2450 Hz and a maximum output power of 800 W, that is, 100% microwave frequency band. The microwave frequency band of fixed chrysanthemum was 55%, and the de-enzyming time was 3 min. The de-enzyming treatment of chrysanthemum was completed by changing the layer thickness (1, 2, 3, 4, 5 cm). Each group of experiments were repeated 3 times.

Effect of microwave frequency band on color: the layer thickness of fixed chrysanthemum was 1 cm, the de-enzyming time was 3 min, and the de-enzyming treatment of chrysanthemum was completed by changing the microwave frequency band of chrysanthemum (17%, 33%, 55%, 77%, 100%). The experiment was repeated three times in each group. On the basis of single factor test, the microwave frequency band, chrysanthemum layer thickness and de-enzyming time were selected as the main influencing factors, and the color difference of dry chrysanthemum was taken as the index to carry out orthogonal test, to determine the best technological conditions of microwave de-enzyming and drying of chrysanthemum. The color of chrysanthemum was compared with that of chrysanthemum at natural temperature. The chromatic aberration was measured by spectrophotometer. Among Δ E * (the size of the total color difference) value is smaller, says the closer to the contrast color, the better the drying quality [7, 14]. Color difference formula: Δ E * = (Δ L *) 2 + (Δ a *) 2 + (Δ b *), Δ L*= L* samples – L* contrast (lightness difference) Δ a * = a* sample – a* comparison (red green difference) Δ b= b* sample-b* contrast (yellow blue differences). Color is one of the important physical indexes to measure the quality of chrysanthemum. It also determines the market price of chrysanthemum to some extent. Since the color of natural dried chrysanthemum after de-enzyming is light yellow, and light yellow is the best color after drying, the color of naturally dried chrysanthemum is used as the control color in this experiment. According to the previous color calculation formula, with delta E* (total color difference size) to represent the different treatment of the sample color and contrast color difference value, the value of the smaller the better. When the de-enzyming time was 3 min, the color difference of chrysanthemum was the minimum.Therefore, the proper de-enzyming time is 3 min.

With the increase of chrysanthemum thickness, the color difference of chrysanthemum also increased trend of different degrees. When the thickness is 1 cm, the color difference value is the smallest, and when the thickness is 2~3 cm, the color difference value changes little.This is determined by the characteristics of microwave drying. When microwave de-enzyming, heat is transferred to the inside of the material, resulting in evaporation of water. When the thickness of the layer is smaller, the microwave penetration ability is stronger, which can make the chrysanthemum finish even de-enzyming;When the layer thickness increases, the microwave penetration and heat supply are limited under certain microwave frequency band, which is easy to cause uneven de-enzyming, thus affecting the color of chrysanthemum, resulting in large color difference. Therefore, the appropriate thickness of chrysanthemum layer was determined to be 1 cm.

In the process of microwave de-enzyming and drying, the primary and secondary order of the effect on the color difference of chrysanthemum were as follows: the de-enzyming time > microwave band > chrysanthemum layer thickness; The optimum technological conditions of microwave de-enzyming and drying chrysanthemum were: chrysanthemum layer thickness 1cm, 55% microwave frequency band, de-enzyming time 3 min.

To sum up, the best quality chrysanthemums were prepared by choosing 55% microwave frequency band, 1 cm thick chrysanthemum layer and 3 min de-enzyming time.

Microwave heating directly on the internal and external chrysanthemum, no need to preheat, can start processing instantly after opening, convenient and efficient.

Microwave Drying Experiment of Chrysanthemum

Salvia miltiorrhiza is a kind of Labiatae plant, which has the effect of removing blood stasis and relieving pain, activating blood circulation and regulating meridians, nourishing the heart and removing annoyance, and has good curative effect on coronary heart disease, chronic hepatitis, early liver cirrhosis and other diseases.Pharmaceutical microwave dryer uses material molecules to interact with high frequency microwave to heat medicinal materials by absorbing microwave. It has the characteristics of selective heating, fast heating speed, uniform heating inside and outside, low temperature sterilization and no pollution. In recent years, it has been applied to the drying of honeysuckle, ginseng, white fruit, yam and other traditional Chinese medicinal materials, and good results have been obtained.

Salvia miltiorrhiza Pharmaceutical Microwave Drying machine

1.Salvia miltiorrhiza pharmaceutical microwave dryer drying speed is fast. Compared with the conventional drying method, the drying speed of microwave drying machine is faster than that of conventional drying method, and the moisture content of microwave drying medicinal materials to 11%~14% does not exceed 20 minutes, while the traditional dryingmethods take more than two days, in which the moisture content of yin-dry group increases to 11% ≤ 14%, and it takes more than 500 minutes to dry by hot air dryer. Therefore, the microwave pharmaceutical dryer is used to dry, the moisture diffusion speed is fast, and the drying efficiency is high.

2.Microwave drying machine controlled temperature drying is beneficial to retain the effective components of Salvia miltiorrhiza.

Microwave drying was used to dry salvia miltiorrhiza by machine-controlled temperature, which had the characteristics of acceleration, deceleration and constant speed. Because water is a polar molecule that absorbs microwave easily when microwave irradiation is used, the interaction between microwave and water molecules leads to the increase of temperature and the decomposition of thermosensitive components. Therefore, the intermittent radiation of microwave medicinal material dryer is used to dry the medicinal materials by temperature control, which is beneficial to retain the effective components of Salvia miltiorrhiza Bunge.

The contents of tanshinone Ⅰand tanshinoneⅡA, the effective components of Salvia miltiorrhiza in traditional Yin dry and sun drying groups, were high, but the quality evaluation index of physical appearance characters was low, mainly because the medicinal materials were soft and the taste of Panax quinquefolium was not strong. It shows that this drying method is not only time-consuming, difficult to control drying conditions, but also easy to mold, turn yellow, deteriorate, suffer from all kinds of pollution, thus affecting the quality of medicinal materials. When hot air drying was used, the drying rate was greatly improved, and the physical appearance quality was also improved obviously, but the taste of ginseng was too weak, and the effective components tanshinone I and tanshinone II a were lower.

Salvia miltiorrhiza dried by microwave drying equipment not only had bright skin color, light yellow section, hard medicinal material, strong ginseng flavor, good quality evaluation index of appearance character, short drying time and high efficiency, but also the content of tanshinone I and tanshinone II a was higher than that of hot air drying group, not only the color of outer skin was bright and red, the cross section was light yellow, the taste of ginseng was strong, and the drying time was short and the efficiency was high.

For the drying of Radix Salviae Miltiorrhizae containing thermosensitive substances, in addition to obtaining good physical appearance quality, attention must also be paid to the destruction of the effective components of Radix Salviae Miltiorrhiza by drying methods in order to ensure the efficacy of Radix Salviae Miltiorrhiza. The moisture and mildew of Salvia miltiorrhiza dried by microwave drying machine were significantly better than those of conventional Yin drying, sun drying and hot air drying salvia miltiorrhiza. There was no significant change in the preservation time within 1 month. Therefore, the texture and appearance quality of Salvia miltiorrhiza can be obviously improved by using tunnel microwave drying equipment. The loss of effective components of Radix Salviae Miltiorrhiza can be reduced as much as possible and the efficacy of Radix Salviae Miltiorrhiza can be improved by proper drying of microwave dryer of Radix Salviae Miltiorrhiza.

Salvia miltiorrhiza Pharmaceutical Microwave Drying machine

Our most common egg tray is made of recycled paper pulp, it is simple to make, low cost, reasonable use of recycled paper, greatly improve the utilization rate of paper resources, conducive to the protection of the environment, is a kind of “green” packaging.

Microwave Egg Tray Drying Machine

This kind of egg tray is made of pulp, and the drying process is indispensable in the process of making it. Microwave egg drying machine is the quality choice of egg tray drying.

Advantages of microwave egg drying machine produced by Leader Microwave Equipment Company:

1.the heating speed of the microwave egg-to-drying device is high.

In vacuum, the electromagnetic waves propagate very quickly, and the time to penetrate the egg tray is very short. Microwave egg tray drying machine can simultaneously heat and dry the inside and outside of the egg tray. Under the actual microwave drying application, when the surface moisture of the egg tray evaporates, the egg holder will have a temperature gradient from the inside to the outside, which makes the direction of water migration and heat transfer consistent, and can greatly improve the drying rate.

2.Microwave egg tray drying machine energy utilization rate is high.

In the microwave egg tray dryer, the microwave drying device is totally enclosed, and the microwave is not absorbed by all the components, so the microwave is mainly used for heating the medium, and the generated microwave energy loss is small.

3.Selective heating of microwave egg tray drying machine.

The temperature field distribution of microwave drying process is affected by the dielectric properties of the dielectric itself, and the dielectric properties are the nonlinear variation function of the temperature or moisture content of the dielectric itself. Microwave drying process, because of the low temperature and high moisture content, the dielectric constant and dielectric loss are high, so the microwave will be concentrated in the corresponding position, which makes the temperature rise faster. The principle of microwave heating determines that microwave only heats polar materials in wet materials and not matrix materials. Therefore, in the process of heating wet materials, water is mainly heated, and the matrix materials only in the process of moisture discharge through heat conduction has a certain temperature increase.

4.Microwave tray drying system is simple to control.

In the case of microwave incident, the temperature of the medium will increase, and with the stop of microwave input, the temperature will decrease directly. There is a serious temperature lag problem in the traditional heating system, and the temperature control is not flexible enough and results in a large amount of heat consumption.

Heating principles of Microwave egg tray drying machine:

When the dielectric is placed in the alternating electromagnetic field, the molecule with asymmetric charge is excited by the alternating electromagnetic field and rotates. Due to the irregular thermal motion of the original molecule in the material and the interaction between the adjacent molecules, the rotation of the molecule is interfered and limited, resulting in a “friction effect”. As a result, part of the energy is transformed into the thermal motion function of the molecule, that is, it is expressed in the form of heat, so that the egg holder is heated. That is, the electric field energy is converted into potential energy, and then converted into heat energy.

When the microwave egg tray is used to dry the production line, the moisture in the egg tray absorbs much more water than the dry matter in the microwave, and the temperature is much higher. The result of the selective heating of water by microwave in this kind of product makes the moisture evaporate rapidly and the product does not overheat. In particular, it should be pointed out that the dry matter is mainly through the conduction of heat transfer, and the temperature will be relatively low, so that the temperature balance occurs in the egg pedestal.

Microwave egg dryer and microwave rubber drying technology which make efficient use of microwave energy have brought great convenience to the processing industry. Microwave technology will promote the progress and development of many industries.

Microwave Egg Tray Drying Machine