CN204881088U - Middle air supply circulation drying equipment - Google Patents

Abstract

The utility model discloses an intermediate air supply circulation drying equipment, which comprises an enclosure structure, a drying area, an air treatment device, an air supply main pipe arranged on the left side of the enclosure structure, a vertically arranged air supply non-uniform orifice plate and a return The wind non-uniform orifice divides the space below the air handling device into air supply main pipe, drying area, and return air main pipe along the airflow direction. The air handling device is connected with the drying area through the air supply main pipe; A group of air supply holes and a group of return air holes are provided. The utility model adopts the air supply in the middle of the drying surface to improve the dry air flow organization, ensure the uniform and stable air flow at the drying surface, improve the drying efficiency and reduce the energy consumption.

Description

Intermediate air supply circulation drying equipment

technical field

The utility model belongs to the technical field of building environment and equipment engineering, and relates to an air circulation treatment system, in particular to an intermediate air supply circulation drying equipment.

Background technique

As a large agricultural country in my country, agricultural energy conservation is of great significance in the strategy of energy conservation and emission reduction. Many agricultural and sideline products (including edible fungi) must be dried before and during storage, transportation and processing into food or other daily necessities because they are rich in water (generally with a moisture content of more than 80%), and drying operations generally require Uses a lot of energy. Hot air drying technology is the mainstream technology in the edible fungus deep processing industry, and its production efficiency directly affects the effect of agricultural energy saving in this field. Therefore, it is particularly important to optimize the drying technology of edible fungi and improve the drying quality of edible fungi. Heat pump drying can make effective use of environmental heat sources, high efficiency, energy saving, and is widely used in food and agricultural product processing industries. Low running cost.

The invention patent application with the publication number 103202520A is an edible fungus drying air circulation treatment device (see Figure 1). The parallel air supply method and the total-separate-total-separated refrigerant distribution mode are used to improve the airflow organization and reduce the drying time. Energy consumption when the barn is running at low load. However, the air supply orifice does not distribute the air volume according to the actual situation, and the parallel air supply method in the baking workshop cannot fully achieve the effect of uniform and stable air flow organization, and the drying effect of edible fungi is not good. Moreover, the air supply port adopts constant air volume, and the same air volume is delivered to different drying spaces, failing to take into account the air volume cycle characteristics, which not only causes waste, but also affects the drying effect of edible fungi.

The invention patent with the publication number 104082397A applies for an energy recovery type edible fungus drying device (see Figure 2). It adopts the form of air supply from top to bottom, and adopts a parallel air supply structure with double-hole plates, but it can only be formed inside the device. One cycle has certain limitations in the use of air volume and wind speed, which has a greater impact on the lower part, thereby affecting the wind speed and air volume in the drying area, and reducing the drying quality of the lower part of the drying area. Moreover, the air supply and return air orifice plates adopt uniform slit orifice plates, which have a great influence on the level of the airflow direction, resulting in differences in air temperature and wind speed in the horizontal direction in the drying area, and the drying effect is not good.

Contents of the invention

Technical problem: The utility model provides a drying method that can effectively improve the drying efficiency and quality of the airflow, ensure the uniformity of the air temperature and humidity during the drying process, improve the energy utilization rate, reduce pollutant emissions, and at the same time, the operation is more convenient and the drying efficiency is improved. High quality intermediate air supply circulation drying equipment.

Technical solution: The intermediate air supply circulation drying equipment of the present utility model includes an enclosure structure, an air supply main pipe arranged in the enclosure structure, a drying area, a return air main pipe and an air treatment device, and the air treatment device is located in the enclosure structure In the upper part, the vertically arranged non-uniform orifice plates for air supply and non-uniform return air divide the space below the air handling device into main air supply ducts, drying areas and main return air ducts arranged in sequence along the airflow direction. The main return air ducts pass through the air The processing device communicates with the main air supply pipe, and the side wall of the enclosure structure is provided with a fresh air outlet and an air exhaust outlet connected with the main air supply pipe. The air treatment device is composed of a solid adsorption device, an evaporation condensation circuit, a solar auxiliary heater and an auxiliary electric heater arranged in sequence along the direction of air flow. The drying area is provided with multi-layer storage boards from top to bottom, and a group of air supply holes is provided above the position corresponding to each layer of storage boards on the non-uniform air supply orifice plate, and each group of air supply holes is correspondingly equipped with The sliding air supply upper shutter and the air supply lower shutter realize the function of covering the air supply holes. A group of return air holes are set above the position corresponding to each storage plate on the non-uniform return air orifice, and each group of return air holes is correspondingly equipped with an upper return air baffle and a return air lower baffle that can slide up and down to realize The function of covering the air return hole.

In the preferred scheme of the utility model equipment, the preferred material of the solid adsorption device is alloy and nanocomposite material, which has high strength and corrosion resistance, and can play a good role in adsorption and filtration in the air circulation cycle, so that excess water vapor and magazines It can be filtered before entering the air handling device, reducing the burden on the air handling device. Moreover, it can be easily removed for cleaning, which reduces the workload of installation and maintenance, and greatly shortens the time for the unit to stop for maintenance.

In the preferred solution of the utility model equipment, the evaporation and condensation circuit includes a condenser, an expansion valve parallel assembly, an evaporator and a parallel compressor unit connected in sequence, and the expansion valve parallel assembly is composed of three sets of expansion valves connected in parallel, and the three sets of expansion valves The refrigerant inlets are respectively connected to the refrigerant outlets of the condenser, and the refrigerant outlets of the expansion valve are respectively connected to the refrigerant inlets of the evaporator. The parallel compressor unit is composed of three groups of compressors in parallel, and the refrigerant inlets of the three groups of compressors The refrigerant outlets of the compressor are respectively connected with the refrigerant outlets of the evaporator, and the refrigerant outlets of the compressor are respectively connected with the refrigerant inlets of the condenser. The condenser includes a condensing gas storage device, a condensing heat exchange tube bundle and a condensing liquid storage device connected in sequence. The condensed gas storage device includes a condensed gas storage inner tube and a condensed gas storage outer tube sleeved outside the condensed gas storage inner tube, the gap between the condensed gas storage inner tube and the condensed gas storage outer tube is a condensed gas storage mixed layer, The inlets of the three condensing splitters set on the inner pipe of the condensing gas storage are the refrigerant inlets of the condenser. The three condensing splitters are respectively connected to a group of compressors, and the outer tube of the condensing gas storage is connected to the inlet of the condensing heat exchange tube bundle. . The condensate storage device includes a condensate storage inner tube and a condensate storage outer tube sleeved outside the condensate storage inner tube, the gap between the condensate storage inner tube and the condensate storage outer tube is a condensate storage mixed layer, The inner pipe of the condensing liquid storage is connected to the outlet of the condensing heat exchange tube bundle. The three refrigerant outlets provided on the outer pipe of the condensing liquid storage are the refrigerant outlets of the condenser. The three refrigerant outlets of the outer pipe of the condensing liquid storage are respectively connected to a Group expansion valves are connected correspondingly.

The evaporator includes an evaporation liquid storage device, an evaporation heat exchange tube bundle and an evaporation gas storage device connected in sequence. The evaporation liquid storage device includes an evaporation liquid storage inner tube and an evaporation liquid storage outer tube sleeved outside the evaporation liquid storage tube, the gap between the evaporation liquid storage inner tube and the evaporation liquid storage outer tube is the evaporation liquid storage mixed layer, The inlets of the three evaporating splitters set on the inner pipe of the evaporating liquid storage are the refrigerant inlets of the evaporator, and the three evaporating splitters are respectively connected to a set of expansion valves, and the inlets of the outer tube of the evaporating liquid storage and the evaporating heat exchange tube bundle connect. The evaporative gas storage device includes an evaporative gas storage inner tube and an evaporative gas storage outer tube sleeved outside the evaporative gas storage inner tube, the gap between the evaporative gas storage inner tube and the evaporative gas storage outer tube is an evaporative gas storage mixed layer, The evaporative gas storage inner tube is connected to the outlet of the evaporative heat exchange tube bundle. The three refrigerant outlets provided on the evaporative gas storage outer tube are the refrigerant outlets of the evaporator. The three refrigerant outlets of the evaporative gas storage outer tube are respectively connected to a The group compressors are connected accordingly.

In the preferred scheme of the utility model equipment, three groups of exhaust hole units connected with the gas storage static pressure layer are evenly distributed on the pipe wall of the condensed gas storage inner pipe, and each group of said exhaust hole units includes three sequentially arranged Condensate exhaust port, the first condensate splitter is connected to the first condensate exhaust port in the triple-vent unit, the second condensate splitter is connected to the second condensate-vent unit in the triple-vent unit The exhaust port is connected, and the third condensing splitter is connected to the third condensing exhaust port in the three sets of vent units. The inner pipe wall of the condensed liquid storage is evenly distributed Layer-connected condensate drain orifice. On the tube wall of the evaporative liquid storage inner tube, there are three groups of drain hole units connected with the static pressure layer of the liquid storage evenly distributed, and each group of said drain hole units includes three evaporative liquid drain orifices arranged in sequence, the first The evaporative splitter is connected to the first evaporative drain orifice in the three-group drain hole unit, and the second evaporative splitter is connected to the second evaporative drain orifice in the three-group drain hole unit , the third evaporative splitter is connected with the third evaporative liquid discharge orifice in the three groups of liquid discharge hole units, and the evaporative gas storage inner tube wall of the evaporative gas storage tube is uniformly distributed with evaporative discharge ports connected with the evaporative gas storage mixed layer stomata.

In the preferred scheme of the utility model equipment, the ratio of the inner diameter of the condensed gas storage outer tube to the outer diameter of the condensed gas storage inner tube is 2.5 to 3.5, and the ratio of the inner diameter of the condensed liquid storage outer tube to the outer diameter of the condensed liquid storage inner tube is 1.5 to 2.5 . The ratio of the inner diameter of the evaporation liquid storage outer tube to the outer diameter of the evaporation liquid storage inner tube is 2-2.5, and the ratio of the inner diameter of the evaporation gas storage outer tube to the outer diameter of the evaporation gas storage inner tube is 2.5-3.

In the preferred solution of the device of the utility model, the ratio of the width, height and depth of the inner space of the drying area is between 1:1.5:1 to 1:1.8:1.2, and the inner width of the drying area is 700 to 900 mm.

In the preferred solution of the utility model equipment, on the non-uniform air supply orifice plate, the number of each group of air supply holes on the upper and lower sides is symmetrically arranged with the middle group of air supply holes as the center, and the number of each group of air supply holes increases from the center to the outside. On the return air non-uniform orifice plate, with the middle group of return air holes as the center, the number of each group of return air holes on the upper and lower sides is symmetrically arranged, and gradually decreases from the center to the outside.

In the preferred solution of the equipment of the utility model, the solid adsorption device is arranged in the air flow channel between the return air main pipe and the air treatment device.

The invention patent with the publication number 103202520A applies for an edible fungus drying air circulation treatment device (see Figure 1) and the air supply port adopts constant air volume, and the same air volume is delivered to different drying spaces, failing to consider the air volume circulation characteristics, which not only causes waste , will also affect the drying effect of edible fungi.

The invention patent with the publication number 104082397A applies for an energy recovery type edible fungus drying device (see Figure 2). It adopts the form of air supply from top to bottom, and adopts a parallel air supply structure with double-hole plates, but it can only be formed in the device. One cycle has certain limitations in the use of air volume and wind speed, which has a greater impact on the lower part, thereby affecting the wind speed and air volume in the drying area, and reducing the drying quality of the lower part of the drying area. Moreover, the air supply and return air orifice plates adopt uniform slit orifice plates, which have a great influence on the level of the airflow direction, resulting in differences in air temperature and wind speed in the horizontal direction in the drying area, and the drying effect is not good.

Beneficial effects: Compared with the existing edible fungus drying device, the utility model has the following advantages:

1. The existing utility model patent CN103202520A adopts the parallel air supply method and the total-separate-total-separated refrigerant distribution mode to improve the airflow organization and reduce the energy consumption of the baking room during low-load operation. However, the air supply orifice does not distribute the air volume according to the actual situation, and the parallel air supply method in the baking workshop cannot fully achieve the effect of uniform and stable air flow organization, and the drying effect of edible fungi is not good. The height:width of the drying area in the utility model is greater than 1, and the design of the drying chamber increases the drying distance while increasing the drying space, improves the heat utilization rate, and can dry more edible fungi at the same time.

2. This utility model adopts the air return mode of parallel air return on the drying surface, so that the dry air flow enters the drying area from the non-uniform air supply orifice at a certain flow rate, and the air flow flows horizontally under the action of the baffle plate on the drying surface, forming a good The airflow organization, the velocity field and temperature field distribution of each drying surface are more stable, thus creating conditions more suitable for the drying of edible fungi.

3. The tuyere of the existing drying device is usually a constant air volume, and the same air volume is delivered to different drying spaces, which not only causes waste, but also affects the drying effect of edible fungi. The air supply non-uniform orifice plate and the return air non-uniform orifice plate adopted by the utility model only have holes on the drying surface, that is, only for the plane air supply of materials stored in the drying area. Under the condition of ensuring a certain opening diameter, the air supply The number of holes is in the form of central symmetry, with the air supply hole as the center, and the farther away from the center is more than the number of air supply holes in the inner layer; the number of return air holes is in the form of central symmetry, with the return air hole As the center, the farther away from the center, the fewer the number of air supply holes than the inner layer, using a simple method to ensure the horizontal flow stability and vertical uniformity of the airflow in the drying area, reducing the airflow organization The pressure difference prolongs the flow time in the drying zone, improves the drying efficiency and reduces energy consumption.

4. According to different working conditions in the drying process of edible fungi, the utility model uses two modes of partial fresh air supply drying and full return air circulation drying, which not only meet the requirements of energy saving and emission reduction, but also facilitate the realization of energy recovery and utilization, and can adapt to different The number of edible fungi, the drying requirements of different drying time periods, and the alternate use of heat exchange devices and fresh air introduction devices can prolong the service life of equipment, reduce the frequency of maintenance and replacement, and reduce costs.

5. The utility model adopts the way of intermediate air supply to form a large cycle inside the drying area. At the same time, due to the transpiration characteristics of the hot air flow, it will fly upwards and form a small cycle on the upper part of the device, which can better reduce the space in the upper part. Air volume, saving energy consumption. In the upper space, due to the air circulation structure, more moisture will be brought out, and the drying will be more thorough, which can reduce the drying time; and the lower space will also form a small circulation due to the convection effect of the wind, so that the air flow can flow more in the lower space. One cycle brings out more moisture and dries more thoroughly, reducing drying time.

Description of drawings

Fig. 1 is the principle structural diagram of existing edible mushroom drying device;

Fig. 2 is the principle structural diagram of existing energy recovery type edible mushroom drying device;

Fig. 3 is the schematic structural diagram of the intermediate air supply circulation drying equipment of the present invention;

Fig. 4 is the schematic diagram of the evaporation and condensation circuit adopted by the utility model equipment;

Fig. 5 is the front view of the air supply non-uniform orifice plate adopted by the utility model equipment;

Fig. 6 is the front view of the return air non-uniform orifice plate adopted by the utility model equipment;

In the figure: 1- enclosure structure; 11- fresh air outlet; 12- air exhaust outlet; 2- air supply main pipe; 21- air supply non-uniform orifice plate; 211- air supply hole; 212- air supply upper shutter; -Lower shutter for air supply; 22-Fan; 3-Drying area; 31-Storage board; 4-Return air main pipe; -Lower shroud for return air; 5-Air treatment device; 51-Solid adsorption device; 52-Solar auxiliary heater; 53-Auxiliary electric heater; 54-Fan; -condenser; 611-condensation gas storage device; 611-1-condensation gas storage inner tube; 611-2-condensation gas storage outer tube; 611-3-condensation gas storage mixed layer; 611-4-condensation exhaust orifice ;611-5-condensation splitter; 612-condensation heat exchange tube bundle; 613-condensation storage device; 613-1-condensation storage inner tube; 613-2 condensation storage outer tube; ;613-4-condensation drain orifice; 62-evaporator; 621-evaporation gas storage device; 621-1-evaporation gas storage inner tube; 621-2-evaporation gas storage outer tube; 621-3-evaporation gas storage Mixed layer; 621-4-evaporation exhaust orifice; 621-5-evaporation splitter; 622-evaporation heat exchange tube bundle; 623-evaporation liquid storage device; 623-1-evaporation liquid storage inner tube; 623-2 evaporation storage Outer liquid pipe; 623-3 evaporating liquid storage mixed layer; 623-4-evaporating liquid discharge orifice; 63-expansion valve; 64-compressor.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail.

The intermediate air supply circulation drying equipment of the utility model includes an enclosure structure 1 , an air supply main pipe 2 , a drying area 3 , a return air main pipe 4 , and an air treatment device 5 . A fresh air outlet 11 and an air exhaust outlet 12 are provided on the left outside of the enclosure structure 1 . The air supply main pipe 2 is arranged on the left side of the enclosure structure 1, and the lower structure is divided into three parts by the air supply non-uniform orifice plate 21 and the return air non-uniform orifice plate 41. Along the airflow direction, there are air supply main pipe 2, drying area 3 and The return air main pipe 4, the air supply main pipe 2 and the drying area 3 are divided by the air supply non-uniform orifice 21, the drying area 3 and the return air main pipe 4 are divided by the return air non-uniform orifice 41, and the air treatment device 5 is located at The upper part of the enclosure structure 1 is located outside the drying area 3, separated by a partition in the middle, directly connected to the return air main pipe 4, and connected to the drying area 3 through the air supply main pipe 2, and a fan is installed at the connection between the air supply main pipe 2 and the drying area 3 twenty two. The side wall of the enclosure structure 1 is provided with a main air supply pipe 2 communicating with a fresh air outlet 11 and an air exhaust outlet 12 .

The air supply main pipe 2 described in the utility model communicates with the drying area 3 through the air supply non-uniform orifice plate 21. When the diameter of the holes 211 is constant, the number of the air supply holes 211 is in the form of central symmetry, with the air supply holes 211a as the center, and those farther from the center are more than the number of the air supply holes in the inner layer. Above and below the air supply hole 211, an upper air supply baffle 212 and an air supply lower baffle 213 are correspondingly arranged. Grooves are provided to allow the air supply upper baffle 212 and the air supply lower baffle 213 to slide up and down on the air supply non-uniform orifice 21 to realize the function of covering the air supply holes 211 .

The return air main pipe 4 of the utility model communicates with the drying area 3 through the return air non-uniform orifice plate 41. The return air non-uniform orifice plate 41 has holes on the drying surface, and the drying surface is located above the corresponding position of the storage plate 31. When the diameter of the hole 411 is constant, the number of return air holes (411) is in the form of central symmetry, with the return air hole (411a) as the center, and the farther away from the center, the number is less than the number of air supply holes on the inner layer. , above and below the return air holes 411 on each layer, there are correspondingly arranged a return air upper baffle 412 and a return air lower baffle 413, and the return air upper baffle 412 and the return air lower baffle 413 of the return air non-uniform orifice 41 There are grooves on the corresponding positions, so that the return air upper shield 412 and the return air lower shield 413 can slide up and down on the return air non-uniform orifice 41, so as to realize the function of covering the return air hole 411.

In the drying area 3 of the utility model, a storage board 31 is arranged in parallel. The storage board 31 is detachable and is arranged below the air supply hole 211 and the return air hole 411. There are even holes on the storage board 31 for the airflow to circulate up and down. When flowing in the drying area 3, the airflow flows from the air supply hole 211 to the return air outlet 411 in parallel. During the flow process, the airflow is in the middle and upper part of the material, which reduces the influence of the material on the parallel flow of the drying airflow and ensures the drying of the front and rear materials. The uniformity effectively avoids the problem of the difference in the quality of edible mushrooms. At the same time, the openings on the storage plate 31 can allow the airflow to flow up and down. When the pressure difference is generated in the vertical direction, the device can be adjusted by itself to supplement the lack of airflow on a certain drying surface. Ensure the drying quality of the materials inside the drying area 3.

The air handling unit 5 is composed of a solid adsorption device 51 , an evaporation and condensation circuit 6 , a solar auxiliary heater 52 , an auxiliary electric heater 53 and a fan 54 arranged in sequence along the direction of air flow. The evaporation and condensation circuit 6 includes a condenser 61 connected in sequence, three sets of expansion valves 63 arranged in parallel, an evaporator 62 and three sets of compressors 63 arranged in parallel, and the refrigerant inlets of the expansion valves 63 arranged in parallel are respectively connected to The refrigerant outlet of the condenser 61 is connected, the refrigerant outlet of the expansion valve 64 is respectively connected with the refrigerant inlet of the evaporator 62, and the refrigerant inlets of the three sets of compressors 64 arranged in parallel are respectively connected with the refrigerant outlet of the evaporator 62, The refrigerant outlets of the compressors 64 are respectively connected to the refrigerant inlets of the condensers 61 .

The condenser 61 includes a condensing gas storage device 611 , a condensing heat exchange tube bundle 612 and a condensing liquid storage device 613 connected in sequence. The condensing gas storage device 611 includes a condensing gas storage inner tube 611-1 and a condensing gas storage outer tube 611-2 sleeved outside the condensing gas storage inner tube 611-1, the condensing gas storage inner tube 611-1 and the condensing gas storage The gap between the outer tubes 611-2 is the condensed gas storage mixed layer 611-3, and the three groups of refrigerant inlets set on the condensed gas storage inner tube 611-1 correspond to cross-connections with the three condensing splitters 611-5 respectively, and the three The inlet of the first condensing splitter 611-5 is the refrigerant inlet of the condenser 61, the inlets of the three condensing splitters 611-5 are respectively connected to a group of compressors 64, and the condensing gas storage outer tube 611-2 is connected to the condensing heat exchange tube bundle 612's inlet connection.

The condensate storage device 613 includes a condensate storage inner tube 613-1 and a condensate storage outer tube 613-2 sleeved outside the condensate storage inner tube 613-1, the condensate storage inner tube 613-1 and the condensate storage The gap between the outer tubes 613-2 is the condensate storage liquid mixing layer 613-3, the condensate storage liquid inner tube 613-1 is connected to the outlet of the condensate heat exchange tube bundle 612, and the three condensate storage liquid outer tubes 613-2 are set The refrigerant outlet is the refrigerant outlet of the condenser 61 , and the three refrigerant outlets of the condensed liquid storage outer pipe 613 - 2 are respectively connected to a group of expansion valves 63 . On the pipe wall of the condensing gas storage inner pipe 611-1, there are three groups of exhaust hole units connected with the gas storage static pressure layer 611-3, each of which includes three condensing exhaust gas units arranged in sequence. Orifice 611-4, the first condensing splitter 611-5 is connected with the first condensing exhaust orifice 611-4 in the three sets of exhaust hole units, the second condensing splitter 611-5 is connected with the three sets of row The second condensing exhaust port 611-4 in the vent unit is connected, and the third condensing splitter 611-5 is connected with the third condensing exhaust port 611-4 in the three groups of vent units, so Condensation drain holes 613-4 communicating with the condensate storage mixed layer 613-3 are evenly distributed on the tube wall of the condensate storage inner tube 613-1.

The evaporator 62 includes an evaporation liquid storage device 621 , an evaporation heat exchange tube bundle 622 and an evaporation gas storage device 623 connected in sequence. The evaporation liquid storage device 621 includes an evaporation liquid storage inner tube 621-1 and an evaporation liquid storage outer tube 621-2 sleeved outside the evaporation liquid storage tube 621-1, the evaporation liquid storage inner tube 621-1 and the evaporation liquid storage tube 621-1 The gap between the outer tubes 621-2 is the evaporation liquid storage mixing layer 621-3, and the three groups of refrigerant inlets set on the evaporation liquid storage inner tube 621-1 correspond to the cross connection with the three evaporation splitters 621-5 respectively. The inlet of one evaporating splitter 621-5 is the refrigerant inlet of the evaporator 62, the inlets of the three evaporating splitters 621-5 are respectively connected to a group of expansion valves 63, and the outer pipe 621-2 of the evaporating liquid storage is connected to the evaporating heat exchange tube bundle 622 import connection. On the tube wall of the evaporation liquid storage inner tube 621-1, there are three groups of drain hole units connected with the liquid storage static pressure layer 621-3 evenly distributed, and each of the drain hole units includes three evaporation drains arranged in sequence. The orifice 621-4, the first evaporative splitter 621-5 and the first evaporative drain orifice 611-4 in the three sets of drain hole units are connected to the evaporative splitter, and the second evaporative splitter 611-5 It is connected with the second evaporative drain orifice 621-4 in the three sets of drain hole units, and the third evaporative splitter 621-5 is connected with the third evaporative liquid drain orifice 621- 4 connection, the evaporation and exhaust holes 623-4 communicating with the evaporation and storage mixed layer 623-3 are uniformly distributed on the tube wall of the evaporation and storage inner tube 623-1.

In the equipment of the utility model, along the direction of air flow, there are arranged air supply main pipe 2, drying area 3, and return air main pipe 4 in sequence. The air supply hole 211 on the top enters the drying area 3, and the airflow flows horizontally inside the drying area 3, dries the edible fungus, takes away the water seal, and returns to the return air main pipe 4 through the return air non-uniform orifice plate 41, and then enters the air handling device 5. Through the solid adsorption device 51, the evaporation and condensation circuit 6, the solar auxiliary heater 52 and the auxiliary electric heater 53, the humid air is treated with impurity removal, dehumidification, heating, etc. The upper part flows out, is pressurized by the fan 54, and enters the variable cross-section air supply space 2 to form a cycle.

The utility model equipment is designed with a full return air drying mode and a partial fresh air drying mode. In the full return air drying mode, the fresh air outlet 11 and the exhaust outlet 12 are in a closed state, and the dry air from the air processing device 5 passes through the fan 54 After pressurized, it enters the air supply main pipe 2, and after drying the edible fungus in the drying area 3, it enters the air treatment device 5 through the return air main pipe 4, and the cycle is completed and repeated. In this mode, the air supply upper shutter 212 and the air supply lower shutter 213 , the return air upper shroud 412 and the return air lower shroud 413 are in the initial position, and the air supply hole 211 and the return air hole 411 are in a fully open state. When the humidity of the dry air flow is too high to meet the drying requirements, the partial fresh air drying mode is adopted. In this mode, the fresh air outlet 11 and the exhaust outlet 12 are in an open state, and the opening degree is adjustable, and are discharged by the air handling device 5 Part of the dry air flow is discharged from the air outlet 12, and forms a negative pressure. The external fresh air enters the drying device through the fresh air outlet 11, and enters the drying process after mixing with the dry air. In this mode, the air supply upper shutter 212 and the return air lower shutter 412 slides downward, and the upper air supply baffle 213 and the lower air return baffle 413 slide upwards to block part of the air supply hole 211 and the return air hole 411, so that the area of the air supply hole and the area of the return air hole are reduced, and the shielding area is the same as the new one. The opening degree of the air outlet 11 and the air outlet 12 is proportional, but the shielding area is not less than 1/2 of the original area.

In the equipment of the present invention, temperature, humidity, and pressure sensors are installed inside the drying area 3 , and the air supply mode is selected according to the values of the temperature, humidity, and pressure sensors installed in the drying area 3 during the drying process. That is, the opening and closing states of the fresh air outlet 11 and the exhaust air outlet 12 are adjusted to adjust the percentage of fresh air in the dry air flow, so that the temperature and humidity of the dry air flow are kept within the set range. The sensor can sensitively measure the temperature, humidity, and pressure of the dry airflow inside the drying area 3 in real time, providing an intuitive and reliable basis for the operator to change the air supply mode. Reasonably adjust the different drying modes of full return air drying and partial fresh air drying to reduce equipment operating power consumption and reduce energy consumption while ensuring drying quality.

The above is only an introduction to the specific embodiments of the utility model to illustrate the technical solution of the utility model, but the scope of protection of the utility model is not limited to the above embodiments, as long as the technical features are equivalently replaced or improved by relevant technical personnel, The formed technical solutions all fall into the protection scope of the utility model.

Claims (7)

1. Intermediate air supply circulation drying equipment, characterized in that the equipment includes an enclosure structure (1), an air supply main pipe (2) arranged in the enclosure structure (1), a drying area (3), a return air Main pipe (4), air treatment device (5), the air treatment device (5) is located on the upper part of the enclosure structure (1), and the vertically arranged air supply non-uniform orifice plate (21) and return air non-uniform orifice plate ( 41) Divide the space below the air handling device (5) into the air supply main pipe (2), the drying area (3) and the return air main pipe (4) arranged in sequence along the airflow direction; the return air main pipe (4) passes through the air The processing device (5) communicates with the air supply main pipe (2), and the side wall of the enclosure structure (1) is provided with a fresh air outlet (11) and an air exhaust outlet (12) connected with the air supply main pipe (2); The air treatment device (5) is composed of a solid adsorption device (51), an evaporation condensation circuit (6), a solar auxiliary heater (52), and an auxiliary electric heater (53) arranged in sequence along the direction of air flow; The drying area (3) is provided with multi-layer storage boards (31) from top to bottom, and a group of air delivery boards (31) are arranged above the position corresponding to each layer of storage boards (31) on the non-uniform air supply orifice plate (21). Air holes (211), each set of air supply holes (211) are correspondingly provided with an upper air supply shutter (212) and an air supply lower shutter (213) that can slide up and down, so as to realize the function of covering the air supply holes (211) ; A group of return air holes (411) are arranged above the positions corresponding to each layer of storage plates (31) on the return air non-uniform orifice plate (41), and each group of return air holes (411) is correspondingly provided with return air that can slide up and down. The wind upper shroud (412) and the return air lower shroud (413) realize the function of covering the return air hole (411). 2. The intermediate air supply circulation drying equipment according to claim 1, characterized in that, the evaporation condensation circuit (6) comprises a condenser (61), an expansion valve parallel assembly, an evaporator (62) and a parallel Compressor unit, the expansion valve parallel assembly is composed of three sets of expansion valves (63) connected in parallel, the refrigerant inlets of the three sets of expansion valves (63) are respectively connected with the refrigerant outlets of the condenser (61), and the expansion valves (63) The refrigerant outlets are respectively connected to the refrigerant inlets of the evaporator (62), and the parallel compressor unit is composed of three groups of compressors (64) connected in parallel, and the refrigerant inlets of the three groups of compressors (64) are respectively connected to the evaporator (62) The refrigerant outlet of the compressor (64) is connected to the refrigerant outlet of the compressor (64) respectively with the refrigerant inlet of the condenser (61); The condenser (61) includes a condensing gas storage device (611), a condensing heat exchange tube bundle (612) and a condensing liquid storage device (613) connected in sequence; The condensed gas storage device (611) includes a condensed gas storage inner tube (611-1) and a condensed gas storage outer tube (611-2) sleeved outside the condensed gas storage inner tube (611-1). The gap between the gas inner tube (611-1) and the condensed gas storage outer tube (611-2) is the condensed gas storage mixed layer (611-3), and the three The inlet of the condensing splitter (611-5) is the refrigerant inlet of the condenser (61), and the three condensing splitters (611-5) are respectively connected to a group of compressors (64), and the condensing gas storage outer pipe ( 611-2) is connected to the inlet of the condensing heat exchange tube bundle (612); The condensate storage device (613) includes a condensate storage inner tube (613-1) and a condensate storage outer tube (613-2) sleeved outside the condensate storage inner tube (613-1). The gap between the tube (613-1) and the condensate storage liquid outer tube (613-2) is the condensate storage liquid mixed layer (613-3), the condensate storage liquid inner tube (613-1) and the condensate heat exchange tube bundle (612 ), the three refrigerant outlets set on the condensed storage liquid outer pipe (613-2) are the refrigerant outlets of the condenser (61), and the three refrigerant outlets of the condensed liquid storage outer pipe (613-2) The outlets are correspondingly connected with a group of expansion valves (63); The evaporator (62) includes an evaporation liquid storage device (621), an evaporation heat exchange tube bundle (622) and an evaporation gas storage device (623) connected in sequence; The evaporation liquid storage device (621) includes an evaporation liquid storage inner tube (621-1) and an evaporation liquid storage outer tube (621-2) sleeved on the outside of the evaporation liquid storage tube (621-1). The gap between the liquid inner pipe (621-1) and the evaporation liquid storage outer pipe (621-2) is the evaporation liquid storage mixed layer (621-3), and the three evaporation liquid storage pipes (621-1) are set The inlet of the evaporating splitter (621-5) is the refrigerant inlet of the evaporator (62), and the three evaporating splitters (621-5) are connected to a group of expansion valves (63) correspondingly, and the evaporating liquid storage outer pipe ( 621-2) is connected to the inlet of the evaporative heat exchange tube bundle (622); The evaporative gas storage device (623) includes an evaporative gas storage inner tube (623-1) and an evaporative gas storage outer tube (623-2) sleeved outside the evaporative gas storage inner tube (623-1). The gap between the tube (623-1) and the evaporative gas storage outer tube (623-2) is the evaporative gas storage mixed layer (623-3), the evaporative gas storage inner tube (623-1) and the evaporative heat exchange tube bundle (622 ), the three refrigerant outlets set on the evaporator gas storage outer tube (623-2) are the refrigerant outlets of the evaporator (62), and the three refrigerant outlets of the evaporator gas storage outer tube (623-2) The outlets are correspondingly connected with a group of compressors (64). 3. The intermediate air supply circulation drying equipment according to claim 2, characterized in that, the inner tube wall of the condensation gas storage (611-1) is evenly distributed with the gas storage static pressure layer (611-3) Three connected sets of exhaust hole units, each set of exhaust hole units includes three successively arranged condensation exhaust holes (611-4), the first condensation splitter (611-5) and three sets of exhaust holes The first condensate exhaust port (611-4) in the orifice unit is connected, and the second condensate splitter (611-5) is connected to the second condensate exhaust orifice (611- 4) Connection, the third condensate splitter (611-5) is connected to the third condensate exhaust orifice (611-4) in the three sets of exhaust hole units, and the condensate storage liquid inner pipe (613-1 ) is evenly distributed on the pipe wall with condensate discharge orifices (613-4) connected to the condensate storage liquid mixing layer (613-3); Three sets of drain hole units communicating with the liquid storage static pressure layer (621-3) are evenly distributed on the tube wall of the evaporation liquid storage inner tube (621-1), and each set of drain hole units includes three The evaporation and drainage holes (621-4) arranged in sequence, the first evaporation splitter (621-5) is connected with the first evaporation and drainage holes (611-4) in the three groups of drainage hole units, the first Two evaporative splitters (611-5) are connected to the second evaporative drain orifice (621-4) in the three groups of drain hole units, and the third evaporative splitter (621-5) is connected to the three groups of drain holes The third evaporative liquid discharge orifice (621-4) in the hole unit is connected, and the tube wall of the evaporative gas storage inner tube (623-1) is evenly distributed with the evaporative gas storage mixed layer (623-3). evaporative vent (623-4). 4. The intermediate air supply circulation drying equipment according to claim 3, characterized in that, the ratio of the inner diameter of the condensed gas storage outer tube (611-2) to the outer diameter of the condensed gas storage inner tube (611-1) is 2.5 ~3.5, the ratio of the inner diameter of the condensate storage outer pipe (613-2) to the outer diameter of the condensate storage inner pipe (613-1) is 1.5~2.5; The ratio of the inner diameter of the evaporation liquid storage outer pipe (621-2) to the outer diameter of the evaporation liquid storage inner pipe (621-1) is 2 to 2.5, and the ratio of the inner diameter of the evaporation gas storage outer pipe (623-2) to the evaporation gas storage outer pipe (623-2) is The ratio of the outer diameter of the inner tube (623-1) is 2.5-3. 5. The intermediate air supply circulation drying equipment according to any one of claims 1-3, characterized in that the ratio of the width, height and depth of the interior space of the drying area (3) is 1:1.5:1 to 1: Between 1.8 and 1.2, the inner width of the drying area (3) is 700-900mm. 6. According to the intermediate air supply circulation drying equipment described in any one of claims 1-3, it is characterized in that, on the said air supply non-uniform orifice plate (21), a group of air supply holes (211a) in the middle are The number of air supply holes (211) in the center and the upper and lower sides of each group is arranged symmetrically, and the number increases layer by layer from the center to the outside; On the return air non-uniform orifice plate (41), with a group of return air holes (411a) in the middle as the center, the number of each group of return air holes (411) on the upper and lower sides is symmetrically arranged, and the number of return air holes (411) is set layer by layer from the center to the outside. decrease. 7. The intermediate air supply circulation drying equipment according to claim 1, characterized in that, the solid adsorption device (51) is arranged in the airflow channel between the return air main pipe (4) and the air treatment device (5).