Drying device for preparing organic photovoltaic cell conversion material

Abstract

The utility model provides a kind of drying device for organic photovoltaic cell conversion material preparation, it is related to drying equipment field for organic photovoltaic cell conversion material preparation, including conveying assembly, including the conveying box for providing drying space, the stock bin for polymer donor material feeding, the main shaft and spiral blade for polymer donor material conveying installed in the conveying box inner chamber, the servomotor and reducer for providing conveying power fixed to the stock bin exterior, and the discharge valve for discharging communicated in the conveying box bottom;The utility model is driven main shaft and spiral blade rotation by servomotor and reducer in conveying assembly, polymer donor material in stock bin is transported to conveying box, by the way of continuous conveying, material is constantly moved in drying process, to increase its contact area and time with hot air, further improve drying effect, to polymer donor material is heated and dried sufficiently.

Description

Technical Field

[0001] This utility model belongs to the field of drying equipment for the preparation of organic photovoltaic cell conversion materials, specifically a drying device for the preparation of organic photovoltaic cell conversion materials. Background Technology

[0002] Organic photovoltaic cell conversion materials refer to active materials used in organic solar cells to achieve photoelectric conversion. They mainly include organic semiconductors such as conductive polymers or small molecules. Polymer donor materials are one type of organic photovoltaic cell conversion materials. Conjugated polymers play a key role in organic solar cells. Their main function is to absorb photons and convert them into electrons. The preparation of polymer donor materials requires the use of drying equipment. The drying equipment can effectively remove moisture from the material and ensure the stability and consistency of the material.

[0003] Polymer donor materials are typically dried using tunnel dryers or microwave drying ovens. However, microwave drying ovens cannot perform continuous drying operations. Therefore, tunnel dryers have become the preferred equipment for large-scale continuous production. The design of tunnel dryers allows them to process large quantities of materials, making them suitable for the needs of mass production. However, when using tunnel dryers, the polymer donor materials are poured onto a conveyor belt and transported into the drying oven for drying. This method can easily lead to the accumulation of polymer donor materials on the conveyor belt, resulting in uneven drying.

[0004] In summary, this invention provides a drying apparatus for preparing organic photovoltaic cell conversion materials to solve the above-mentioned problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A drying apparatus for preparing organic photovoltaic cell conversion materials includes a conveying assembly comprising a conveying box for providing a drying space, a hopper for feeding polymer donor material, a main shaft and helical blades installed in the inner cavity of the conveying box for conveying the polymer donor material, a servo motor and reducer fixed outside the hopper for providing conveying power, and a discharge valve connected to the bottom of the conveying box for discharging material. A hot air assembly includes a first fan for providing air, a heating box for providing air heating space, a distribution pipe and branch pipes for hot air diversion and conveying, a mesh for preventing the polymer donor material from falling, and a first electric heater for heating the air. The system includes a conveying pipe for connecting the heating box and the diversion pipe, a second electric heater for secondary heating, an air extraction assembly including a cylinder, a cone and a hopper for providing separation space, a second fan and an inner pipe for accelerating separation, a spiral air inlet pipe, a three-way pipe and an extraction pipe for extracting air from the inner cavity of the conveying box, and a discharge valve for discharging material from the hopper, and a control assembly including a PID controller for drying and temperature control, a thermocouple for monitoring the outlet temperature of the heating box, a first temperature sensor for monitoring the outlet temperature of the branch pipe, a second temperature sensor for monitoring the temperature of the conveying box and the inner cavity of the hopper, and a humidity sensor for monitoring the humidity of the extracted air.

[0007] Furthermore, in this utility model, one end of the main shaft is fixed to the inner wall of the conveying box via a bearing, and the other end of the main shaft extends into the inner cavity of the hopper. The hopper is connected to the inner cavity of the conveying box. The output shaft of the servo motor is connected to the input shaft of the reducer. The output shaft of the reducer passes through the inner cavity of the hopper and is connected to the main shaft.

[0008] Furthermore, in this utility model, the first electric heater is fixed to the inner cavity of the heating box, the outlet of the first fan is connected to the inlet of the heating box, the thermocouple is fixed to the surface of the heating box and the probe end penetrates into the inner cavity of the heating box, and the two ends of the delivery pipe are connected to the outlet of the heating box and the inlet of the diversion pipe, respectively.

[0009] Furthermore, in this utility model, several branch pipes are provided, and they are respectively connected to the inner cavities of the conveying box and the hopper. The branch pipes are also connected to the diversion pipes. The second electric heater is installed in the inner cavity of the branch pipe. The first temperature sensor is fixed on the surface of the branch pipe, and its detection end extends through the inner cavity of the branch pipe. The mesh is fixed at the connection end between the branch pipe and the inner cavity of the conveying box and the hopper.

[0010] Furthermore, in this utility model, the cone is connected to the bottom of the cylinder, the collecting hopper is connected to the bottom of the cone, the second fan is fixed to the top of the cylinder, one end of the inner tube is connected to the air inlet of the second fan, the other end of the inner tube extends into the inner cavity of the cylinder, and the discharge valve is connected to the bottom of the collecting hopper.

[0011] Furthermore, in this utility model, one end of the spiral air inlet pipe is connected to the inner cavity of the cylinder, the other end of the spiral air inlet pipe is connected to the three-way pipe, the exhaust pipe is connected to the top of the conveying box, the other end of the exhaust pipe is connected to the three-way pipe, and the air outlet of the second fan is connected to the inner cavity of the heating box through a pipe.

[0012] Furthermore, in this utility model, several second temperature sensors are provided and are respectively fixed on the surface of the conveying box and the hopper, with their detection ends penetrating into the inner cavity of the conveying box and the hopper. The PID controller is fixed on the surface of the conveying box, and the humidity sensor is fixed on the surface of the three-way pipe, with its detection end penetrating into the inner cavity of the three-way pipe.

[0013] Furthermore, in this invention, the output terminals of the thermocouple, the first temperature sensor, the second temperature sensor, and the humidity sensor are all connected to the input terminal of the PID controller, and the output terminal of the PID controller is connected to the input terminals of the servo motor, the first fan, the first electric heater, the second electric heater, and the second fan, respectively.

[0014] Beneficial effects: This utility model has the following beneficial effects:

[0015] This invention utilizes a servo motor and reducer in the conveying assembly to drive the main shaft and spiral blades to rotate, transporting the polymer feed material from the hopper to the conveying box. Through continuous conveying, the material moves constantly during the drying process, increasing its contact area and time with hot air, thus further improving the drying effect. The first fan in the hot air assembly provides air, which, after being heated by the first electric heater in the heating chamber, is conveyed through the conveying pipe, diversion pipe, and branch pipes to the inner cavity of the conveying box and hopper. Multiple branch pipes are installed and connected to the conveying box and hopper to ensure uniform distribution of hot air, thereby fully heating and drying the polymer feed material. Simultaneously, the second electric heater provides secondary heating of the hot air, allowing for precise temperature control as needed, thereby improving drying efficiency. The second fan in the extraction assembly extracts gas from the inner cavity of the conveying box through a spiral inlet pipe, a three-way pipe, and an extraction pipe. The gas enters a separation space composed of a cylinder and a cone, where centrifugal force achieves gas-solid separation. Solid particles fall into the collection hopper and are discharged and recycled through the discharge valve, reducing material loss. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the main structure of the hot air assembly of this utility model;

[0018] Figure 3This is a schematic diagram of the first fan and heating box in their separated state according to this utility model;

[0019] Figure 4 This is a schematic diagram of the main structure of the air extraction component of this utility model;

[0020] Figure 5 This is a schematic diagram of the main structure of the conveying component of this utility model;

[0021] Figure 6 This is a schematic diagram of the temperature control system of this utility model.

[0022] In the picture:

[0023] 100. Conveying assembly; 110. Conveying box; 120. Hopper; 130. Main shaft; 140. Spiral blades; 150. Servo motor; 160. Reducer; 170. Discharge valve; 200. Hot air assembly; 210. First fan; 220. Heating box; 230. Diverter pipe; 240. Branch pipe; 250. Mesh sheet; 260. First electric heater; 270. Conveying pipe; 280. Second electric heater 300. Exhaust assembly; 310. Cylinder; 320. Conical cylinder; 330. Collection hopper; 340. Second fan; 350. Inner pipe; 360. Spiral air inlet pipe; 370. T-joint pipe; 380. Exhaust pipe; 390. Discharge valve; 400. Control assembly; 410. PID controller; 420. Thermocouple; 430. First temperature sensor; 440. Second temperature sensor; 450. Humidity sensor. Detailed Implementation

[0024] To better understand the technical content of this utility model, specific embodiments are described below in conjunction with the accompanying drawings. Various aspects of this utility model are described in this disclosure with reference to the accompanying drawings, which illustrate numerous illustrative embodiments. The embodiments of this disclosure are not necessarily defined to include all aspects of this utility model. It should be understood that the various concepts and embodiments described above, as well as those described in more detail below, can be implemented in any of many ways, because the concepts and embodiments disclosed in this utility model are not limited to any particular implementation. Furthermore, some aspects of this utility model can be used alone or in any suitable combination with other aspects disclosed in this utility model.

[0025] Example 1

[0026] like Figure 1-6The image shows the first embodiment of this utility model, which provides a drying device for preparing organic photovoltaic cell conversion materials. The device includes a conveying assembly 100, comprising a conveying box 110 for providing a drying space, a hopper 120 for feeding polymer donor materials, a main shaft 130 and spiral blades 140 installed inside the conveying box 110 for conveying the polymer donor materials, a servo motor 150 and a reducer 160 fixed outside the hopper 120 for providing conveying power, and a discharge valve 170 connected to the bottom of the conveying box 110 for discharging materials. A hot air assembly 200 includes a first fan 210 for providing air, a heating box 220 for providing air heating space, a diversion pipe 230 and branch pipe 240 for hot air diversion and conveying, a mesh 250 for preventing the polymer donor materials from falling, and a first electric heater 26 for heating the air. 0. A conveying pipe 270 for connecting the heating box 220 and the diversion pipe 230, and a second electric heater 280 for secondary heating; an air extraction assembly 300, including a cylinder 310, a cone 320 and a hopper 330 for providing separation space, a second fan 340 and an inner pipe 350 for accelerating separation, a spiral air inlet pipe 360, a three-way pipe 370 and an extraction pipe 380 for extracting air from the inner cavity of the conveying box 110, and a discharge valve 390 for discharging material from the hopper 330; and a control assembly 400, including a PID controller 410 for drying and temperature control, a thermocouple 420 for monitoring the outlet temperature of the heating box 220, a first temperature sensor 430 for monitoring the outlet temperature of the branch pipe 240, a second temperature sensor 440 for monitoring the temperature of the inner cavity of the conveying box 110 and the hopper 120, and a humidity sensor 450 for monitoring the humidity of the extracted air.

[0027] like Figure 1-6As shown, the main shaft 130 and spiral blades 140 in the conveying assembly 100, driven by the servo motor 150 and the reducer 160, can convey the polymer donor material. The material in the hopper 120 is regularly conveyed to the conveying box 110 by the spiral blades 140. Unlike the tunnel dryer where the material is poured onto the conveyor belt, the spiral conveying method can avoid the accumulation of material during the conveying process, so that the material can be more evenly distributed in the conveying box 110, providing a good foundation for subsequent drying. The hot air assembly 200 provides hot air for the drying process. The first fan 210 sends the air into the heating box 220, and the first electric heater 260 heats the air. The heated hot air passes through the conveying pipe 270 and the diversion pipe 230. The material is conveyed to the inner cavity of the conveying box 110 and the hopper 120 via branch pipes 240. Multiple branch pipes 240 are connected to the conveying box 110 and the hopper 120 respectively, allowing hot air to be blown onto the material from multiple locations. Simultaneously, a second electric heater 280 can reheat the hot air in the branch pipes 240, further ensuring the stability of the hot air temperature. The mesh 250 prevents the polymer donor material from falling into the branch pipes 240, ensuring smooth hot air delivery. Through a multi-position, temperature-controlled hot air supply method, the polymer donor material can be in contact with hot air from all directions during delivery, achieving uniform drying. The function of the extraction assembly 300 is to separate the moisture and some fine particulate material generated during the drying process. The second fan 340 is connected to the material through a spiral air inlet pipe 3. 60. The three-way pipe 370 and the suction pipe 380 evacuate the inner cavity of the conveying box 110, allowing moisture to be discharged in a timely manner during the drying process. The separation space composed of the cylinder 310, the cone 320, and the collecting hopper 330, along with the inner pipe 350, utilizes centrifugal force to separate fine particulate materials from the moisture and collect them in the collecting hopper 330, which is then discharged through the discharge valve 390. Timely discharge of moisture helps maintain the stability of the drying environment, preventing moisture accumulation from affecting the drying effect and further promoting uniform drying of the material. The control component 400 precisely regulates the entire drying process through the PID controller 410. Thermocouple 420, first temperature sensor 430, second temperature sensor 440, and humidity sensor 450 are also included. The outlet temperature of the heating box 220, the outlet temperature of the branch pipe 240, the internal temperature of the conveying box 110 and the hopper 120, and the humidity of the exhaust air are monitored respectively, and the data are fed back to the PID controller 410. The PID controller 410 controls the servo motor 150, the first fan 210, the first electric heater 260, the second electric heater 280 and the second fan 340 according to the feedback information to ensure that the temperature and humidity conditions during the drying process are within a suitable range, thereby ensuring the uniformity and stability of the drying effect. The conveying component 100 can effectively avoid material accumulation, the hot air component 200 can provide uniform hot air, the exhaust component 300 can assist in drying and separation, and the control component 400 can precisely regulate. Through the synergistic effect of multiple aspects,This effectively solves the problem of uneven drying of polymer donor materials during the drying process.

[0028] Example 2

[0029] Reference Figure 1-3 5, is the second embodiment of this utility model, which is based on the previous embodiment.

[0030] In this embodiment, one end of the main shaft 130 is fixed to the inner wall of the conveying box 110 by a bearing, and the other end of the main shaft 130 extends into the inner cavity of the hopper 120. The hopper 120 is connected to the inner cavity of the conveying box 110. The output shaft of the servo motor 150 is connected to the input shaft of the reducer 160. The output shaft of the reducer 160 passes through the inner cavity of the hopper 120 and is connected to the main shaft 130.

[0031] The first electric heater 260 is fixed to the inner cavity of the heating box 220, the outlet of the first fan 210 is connected to the inlet of the heating box 220, the thermocouple 420 is fixed to the surface of the heating box 220 and the probe end extends into the inner cavity of the heating box 220, and the two ends of the delivery pipe 270 are connected to the outlet of the heating box 220 and the inlet of the diversion pipe 230, respectively.

[0032] Several branch pipes 240 are provided and are respectively connected to the inner cavity of the conveying box 110 and the hopper 120. The branch pipes 240 are also connected to the diversion pipe 230. The second electric heater 280 is installed in the inner cavity of the branch pipe 240. The first temperature sensor 430 is fixed on the surface of the branch pipe 240 and the detection end extends through the inner cavity of the branch pipe 240. The mesh 250 is fixed at the connection end between the branch pipe 240 and the inner cavity of the conveying box 110 and the hopper 120.

[0033] like Figure 1-3 As shown in Figure 5, the servo motor 150 starts, and the power is transmitted to the main shaft 130 after being reduced by the reducer 160, causing the main shaft 130 to rotate. The polymer feed material in the hopper 120 moves into the conveying box 110 under the push of gravity and the spiral blades 140. The conveying box 110 provides space for drying. Finally, the dried material can be discharged through the discharge valve 170. The first fan 210 sends air into the heating box 220, and the first electric heater 260 heats the air. Thermocouple 420 monitors the temperature. The outlet temperature of the heating box 220 is fed back to the PID controller 410. The heated air enters the diversion pipe 230 through the conveying pipe 270, and then enters the inner cavity of the conveying box 110 and the hopper 120 through several branch pipes 240 respectively. The second electric heater 280 reheats the hot air entering the branch pipe 240. The first temperature sensor 430 monitors the outlet temperature of the branch pipe 240 and feeds it back to the PID controller 410. The mesh 250 prevents the polymer donor material from falling into the branch pipe 240.

[0034] Example 3

[0035] Reference Figure 1-6 This is the third embodiment of the present invention, which is based on the first two embodiments.

[0036] In this embodiment, the cone 320 is connected to the bottom of the cylinder 310, the hopper 330 is connected to the bottom of the cone 320, the second blower 340 is fixed to the top of the cylinder 310, one end of the inner tube 350 is connected to the air inlet of the second blower 340, the other end of the inner tube 350 extends into the inner cavity of the cylinder 310, and the discharge valve 390 is connected to the bottom of the hopper 330.

[0037] One end of the spiral air inlet pipe 360 ​​is connected to the inner cavity of the cylinder 310, and the other end of the spiral air inlet pipe 360 ​​is connected to the three-way pipe 370. The exhaust pipe 380 is connected to the top of the conveying box 110, and the other end of the exhaust pipe 380 is connected to the three-way pipe 370. The outlet of the second fan 340 is connected to the inner cavity of the heating box 220 through a pipe.

[0038] Several second temperature sensors 440 are provided and are respectively fixed on the surface of the conveying box 110 and the hopper 120. Their detection ends penetrate into the inner cavity of the conveying box 110 and the hopper 120. The PID controller 410 is fixed on the surface of the conveying box 110. The humidity sensor 450 is fixed on the surface of the three-way pipe 370 and its detection end penetrates into the inner cavity of the three-way pipe 370.

[0039] The output terminals of thermocouple 420, first temperature sensor 430, second temperature sensor 440 and humidity sensor 450 are all connected to the input terminal of PID controller 410. The output terminal of PID controller 410 is connected to the input terminals of servo motor 150, first fan 210, first electric heater 260, second electric heater 280 and second fan 340 respectively.

[0040] like Figure 1-6As shown, the second blower 340 starts, causing the moisture in the conveying box 110 to enter the cylinder 310 through the exhaust pipe 380, the three-way pipe 370, and the spiral air inlet pipe 360. Inside the cylinder 310 and the cone 320, the airflow rotates and accelerates. Due to centrifugal force, the polymer feed material particles separate from the airflow and fall into the collection hopper 330, which can be discharged through the discharge valve 390. The separated gas is drawn out by the second blower 340 through the inner pipe 350, and its outlet is sent back to the heating box 220 for recycling through a pipeline. The PID controller 410 receives the thermocouple. Feedback signals from the first temperature sensor 430, the second temperature sensor 440, and the humidity sensor 450 are received. The second temperature sensor 440 monitors the temperature inside the conveying box 110 and the hopper 120, and the humidity sensor 450 monitors the humidity of the exhaust air. Based on these signals, the PID controller 410 adjusts the speed of the servo motor 150 to control the material conveying speed and adjusts the working status of the first fan 210, the first electric heater 260, the second electric heater 280, and the second fan 340, thereby achieving precise control of the drying temperature and humidity.

[0041] In operation, the servo motor 150 outputs power, which is transmitted to the main shaft 130 via the reducer 160, causing the main shaft 130 to rotate. The rotation of the main shaft 130 drives the spiral blades 140 to rotate, and the polymer feed material in the hopper 120 is conveyed into the conveying box 110 under the push of the spiral blades 140. The first fan 210 sends air into the heating box 220, and the first electric heater 260 in the heating box 220 heats the air. Thermocouple 420 monitors the outlet temperature of the heating box 220 and transmits the data to the PID controller 4. 10. The heated air enters the diversion pipe 230 through the conveying pipe 270, and then enters the conveying box 110 and the hopper 120 through multiple branch pipes 240 respectively. The second electric heater 280 in the branch pipe 240 can reheat the hot air as needed. The first temperature sensor 430 monitors the outlet temperature of the branch pipe 240 and also feeds the data back to the PID controller 410. The mesh 250 can prevent the polymer donor material from falling into the branch pipe 240, ensuring the normal conveying of hot air. Finally, the dried material can be discharged and collected through the discharge valve 170.

[0042] The second blower 340 starts and draws air from the inner cavity of the conveying box 110 through the spiral air inlet pipe 360, the three-way pipe 370 and the exhaust pipe 380. The gas containing moisture and a small amount of polymer feed material enters the cylinder 310. In the cylinder 310 and the cone 320, the gas is accelerated and separated by the action of the second blower 340 and the inner pipe 350. The polymer feed material particles fall into the collection hopper 330 and are discharged through the discharge valve 390. The separated gas returns to the inner cavity of the heating box 220 through the pipeline from the outlet of the second blower 340 for recycling.

[0043] Thermocouple 420, first temperature sensor 430, second temperature sensor 440, and humidity sensor 450 monitor the outlet temperature of heating chamber 220, the outlet temperature of branch pipe 240, the internal temperature of conveying box 110 and hopper 120, and the exhaust humidity, respectively, and transmit the data to PID controller 410. PID controller 410 adjusts and controls servo motor 150, first fan 210, first electric heater 260, second electric heater 280, and second fan 340 based on the received data, to achieve precise temperature control and operation control of the drying process, ensuring drying effect and stable equipment operation.

[0044] All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Since this application is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail in this application.

[0045] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Those skilled in the art to which this invention pertains can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this invention shall be determined by the claims.

Claims

1. A drying apparatus for preparing organic photovoltaic cell conversion materials, characterized in that: include, The conveying assembly (100) includes a conveying box (110) for providing a drying space, a hopper (120) for feeding polymer feed material, a main shaft (130) and a helical blade (140) installed in the inner cavity of the conveying box (110) for conveying polymer feed material, a servo motor (150) and a reducer (160) fixed to the outside of the hopper (120) for providing conveying power, and a discharge valve (170) connected to the bottom of the conveying box (110) for discharging material. The hot air assembly (200) includes a first fan (210) for providing air, a heating box (220) for providing air heating space, a branch pipe (230) and a branch pipe (240) for hot air diversion and delivery, a mesh (250) for preventing polymer feed material from falling, a first electric heater (260) for heating air, a delivery pipe (270) for connecting the heating box (220) and the branch pipe (230), and a second electric heater (280) for secondary heating; The air extraction assembly (300) includes a cylinder (310), a cone (320), and a hopper (330) for providing a separation space; a second fan (340) and an inner pipe (350) for accelerating separation; a spiral air inlet pipe (360), a three-way pipe (370), and an air extraction pipe (380) for extracting air from the inner cavity of the conveying box (110); and a discharge valve (390) for discharging material from the hopper (330). The control assembly (400) includes a PID controller (410) for drying and temperature control, a thermocouple (420) for monitoring the outlet temperature of the heating box (220), a first temperature sensor (430) for monitoring the outlet temperature of the branch pipe (240), a second temperature sensor (440) for monitoring the internal temperature of the conveying box (110) and the hopper (120), and a humidity sensor (450) for monitoring the humidity of the exhaust air.

2. The drying apparatus for preparing organic photovoltaic cell conversion materials as described in claim 1, characterized in that: One end of the main shaft (130) is fixed to the inner wall of the conveying box (110) by a bearing, and the other end of the main shaft (130) extends into the inner cavity of the hopper (120). The hopper (120) is connected to the inner cavity of the conveying box (110). The output shaft of the servo motor (150) is connected to the input shaft of the reducer (160). The output shaft of the reducer (160) passes through the inner cavity of the hopper (120) and is connected to the main shaft (130).

3. The drying apparatus for preparing organic photovoltaic cell conversion materials as described in claim 1, characterized in that: The first electric heater (260) is fixed to the inner cavity of the heating box (220), the outlet of the first fan (210) is connected to the inlet of the heating box (220), the thermocouple (420) is fixed to the surface of the heating box (220) and the probe end extends into the inner cavity of the heating box (220), and the two ends of the delivery pipe (270) are connected to the outlet of the heating box (220) and the inlet of the diversion pipe (230) respectively.

4. The drying apparatus for preparing organic photovoltaic cell conversion materials as described in claim 1, characterized in that: The branch pipe (240) is provided in several parts and is connected to the inner cavity of the conveying box (110) and the hopper (120) respectively. The branch pipe (240) is also connected to the diversion pipe (230). The second electric heater (280) is installed in the inner cavity of the branch pipe (240). The first temperature sensor (430) is fixed on the surface of the branch pipe (240) and the detection end penetrates into the inner cavity of the branch pipe (240). The mesh (250) is fixed at the connection end of the branch pipe (240) with the inner cavity of the conveying box (110) and the hopper (120).

5. The drying apparatus for preparing organic photovoltaic cell conversion materials as described in claim 1, characterized in that: The cone (320) is connected to the bottom of the cylinder (310), the hopper (330) is connected to the bottom of the cone (320), the second blower (340) is fixed to the top of the cylinder (310), one end of the inner tube (350) is connected to the air inlet of the second blower (340), the other end of the inner tube (350) extends into the inner cavity of the cylinder (310), and the discharge valve (390) is connected to the bottom of the hopper (330).

6. The drying apparatus for preparing organic photovoltaic cell conversion materials as described in claim 1, characterized in that: One end of the spiral air inlet pipe (360) is connected to the inner cavity of the cylinder (310), and the other end of the spiral air inlet pipe (360) is connected to the three-way pipe (370). The exhaust pipe (380) is connected to the top of the conveying box (110), and the other end of the exhaust pipe (380) is connected to the three-way pipe (370). The exhaust end of the second fan (340) is connected to the inner cavity of the heating box (220) through a pipe.

7. The drying apparatus for preparing organic photovoltaic cell conversion materials as described in claim 1, characterized in that: The second temperature sensor (440) is provided in several parts and is fixed on the surface of the conveying box (110) and the hopper (120) respectively. Its detection end extends into the inner cavity of the conveying box (110) and the hopper (120). The PID controller (410) is fixed on the surface of the conveying box (110). The humidity sensor (450) is fixed on the surface of the three-way pipe (370) and its detection end extends into the inner cavity of the three-way pipe (370).

8. The drying apparatus for preparing organic photovoltaic cell conversion materials as described in claim 1, characterized in that: The output terminals of the thermocouple (420), the first temperature sensor (430), the second temperature sensor (440), and the humidity sensor (450) are all connected to the input terminal of the PID controller (410). The output terminal of the PID controller (410) is connected to the input terminals of the servo motor (150), the first fan (210), the first electric heater (260), the second electric heater (280), and the second fan (340), respectively.

Images