Solvent recovery device

Abstract

The invention relates to the technical field of solvent recovery devices, in particular to a solvent recovery device which comprises a tank body, a guide assembly and a separation assembly, a condensation cover is fixedly mounted on the inner wall of the tank body and is of a conical structure, and an annular liquid guide table is arranged at the bottom of the condensation cover; a heat conduction cover is welded to the top of the condensation cover, and a plurality of heat conduction rods are welded to the top of the heat conduction cover. And a top cover is mounted at the top of the tank body through bolts. The evaporation disc is mounted at the top of the spiral plate, a solvent can be driven to uniformly flow to the top of the evaporation disc through rotation of the spiral plate, and the temperature of the evaporation disc is higher than the internal environment temperature of the tank body in the working process of the device through the evaporation disc made of a high-heat-conductivity-coefficient material; therefore, a relatively large temperature difference is formed between the solvent and the solvent in the liquid storage tank, so that different components can be conveniently distilled and recycled, and the application range of the device is expanded.

Description

Technical Field

[0001] The invention relates to the technical field of solvent recovery devices, in particular to a solvent recovery device. Background Art

[0002] Solvent recovery and separation equipment plays an important role in the chemical, pharmaceutical, paint and other industries. It is mainly used to recover and reuse organic solvents used in the production process. These equipment separate the effective components in the waste solvents through process steps such as distillation and condensation, thereby realizing the recycling of resources and reducing costs. With the increasingly stringent environmental regulations and the continuous increase in production costs, solvent recovery technology has received widespread attention and application. Therefore, we propose a solvent recovery device.

[0003] The prior art also has the following defects during use: When the solvent recovery device in the prior art separates the effective components in the organic solvent, a single distillation and condensation recovery is not sufficient to recover the multiple components in the solvent, so that the solvent needs to be recovered multiple times in order to recover the multiple components in the solvent separately, which increases the steps of the solvent recovery process and reduces the efficiency of the solvent recovery.

[0004] In view of this, we propose a solvent recovery device to solve the existing problems. Summary of the invention

[0005] The object of the present invention is to provide a solvent recovery device to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a solvent recovery device, comprising a tank body, a guide assembly and a separation assembly, a condensation hood is fixedly installed on the inner wall of the tank body, the condensation hood is a cone structure, and a circular liquid guide platform is arranged at the bottom of the condensation hood, a heat conductive hood is welded on the top of the condensation hood, and a plurality of heat conductive rods are welded on the top of the heat conductive hood; A top cover is installed on the top of the tank body by bolts, a T-shaped tube is fixedly installed on the top of the top cover, and a vacuum pump is installed on the side of the T-shaped tube through a hose; A separation assembly is fixedly installed inside the tank body, and the separation assembly includes a liquid storage tank, a heating wire is installed around the liquid storage tank, a plurality of connecting frames are fixedly installed on the bottom of the liquid storage tank, and the connecting frames are fixedly connected to the inner wall of the tank body, a driving shaft is longitudinally installed inside the liquid storage tank through a bearing, and the driving shaft passes through the liquid storage tank and extends to the bottom of the liquid storage tank, a spiral plate is welded on the side of the driving shaft, an evaporation disk is welded on the side of the driving shaft at the top position of the spiral plate, the evaporation disk and the top of the spiral plate are on the same horizontal plane, and a fan-shaped notch is opened in the evaporation disk, a plurality of guide grooves are arranged on the top surface of the evaporation disk, and the evaporation disk is made of silicon carbide ceramic material; A guide assembly is fixedly installed on the outer side of the liquid storage tank, and the guide assembly includes a heat-insulating cover, which is fixedly connected to the side wall of the liquid storage tank, and a plurality of supporting shaft frames are fixedly installed on the side of the heat-insulating cover, a gear ring is installed on the top of the supporting shaft frame, and a guide plate is fixedly installed on one side of the bottom of the gear ring, one side of the guide plate is in contact with the liquid guide platform on the inner side of the condensation cover, and a groove is provided on the top of the guide plate, and a plurality of longitudinally arranged drainage holes are provided inside the groove, and the drainage holes pass through the top and bottom of the guide plate, and a plurality of racks are provided on the top of the gear ring.

[0007] Preferably, a motor is fixedly mounted on the bottom of the liquid storage tank, and an output shaft of the motor is fixedly connected to a drive shaft.

[0008] Preferably, a waste pipe is fixedly installed inside the tank body, the top end of the waste pipe extends to the bottom surface inside the liquid storage tank, and the bottom end of the waste pipe passes through the bottom of the tank body and extends out of the tank body.

[0009] Preferably, the bottom of the tank body is a conical structure, and a plurality of support frames are fixedly installed on the bottom of the tank body, and a bottom plate is fixedly installed on the bottom of the support frame.

[0010] Preferably, a discharge pipe is fixedly installed at the bottom of the tank body, and an electric butterfly valve is fixedly installed at the connection position between the discharge pipe and the tank body.

[0011] Preferably, an air pressure detector is fixedly mounted on one side of the top of the top cover, and a detection end of the air pressure detector passes through the top cover and extends to the interior of the tank body.

[0012] Preferably, a flow guide pipe is fixedly installed at the central position of the heat conductive cover and the condensation cover, and the top end of the flow guide pipe is consistent with the bottom end of the T-shaped tube.

[0013] Preferably, a plurality of recovery boxes are fixedly installed inside the tank body, the recovery boxes are of fan-shaped groove structure, and solenoid valves are fixedly installed at the bottom of the recovery boxes, and a cooling fan is fixedly installed on the side of the tank body above the heat conductive cover.

[0014] Preferably, a driving roller is clamped and installed on the upper side of the gear ring, a driving motor is fixedly installed on one side of the driving roller, and the driving motor is fixedly connected to the inner wall of the condensation hood.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention installs an evaporation plate on the top of the spiral plate, and can drive the solvent to flow evenly to the top of the evaporation plate through the rotation of the spiral plate. In addition, by adopting the evaporation plate made of high thermal conductivity material, the temperature of the evaporation plate is higher than the internal ambient temperature of the tank body during the operation of the device, thereby forming a large temperature difference with the solvent in the liquid storage tank, so as to facilitate the distillation and recovery of different components, thereby expanding the application scope of the device.

[0016] The present invention installs a guide plate at the bottom of the gear ring, and the guide plate contacts the inner wall of the condensation hood to guide the liquid condensed on the inner wall of the condensation hood, so that solvents of different components fall into different recovery boxes respectively. Therefore, the device can realize the recovery of multiple components during the solvent recovery process, thereby improving the efficiency of the device for solvent recovery. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of a three-dimensional cross-sectional structure of the present invention; Figure 3 It is a schematic diagram of a first partial three-dimensional cross-sectional structure of the present invention; Figure 4 It is a schematic diagram of a second partial three-dimensional cross-sectional structure of the present invention; Figure 5 It is a front structural schematic diagram of the present invention; Figure 6 It is a schematic diagram of the front cross-sectional structure of the present invention; Figure 7 It is a schematic diagram of a first partial front cross-sectional structure of the present invention; Figure 8 It is a schematic diagram of the second partial front cross-sectional structure of the present invention.

[0018] In the figure: 1. top cover; 101. T-shaped tube; 102. air pressure detector; 103. vacuum pump; 2. tank body; 201. support frame; 202. bottom plate; 203. discharge pipe; 204. waste pipe; 205. heat conducting rod; 206. guide pipe; 207. heat conducting cover; 208. recycling box; 209. condensation cover; 210. cooling fan; 3. guide assembly; 301. support shaft frame; 302. gear ring; 303. guide plate; 304. insulation cover; 305. drive roller; 306. drive motor; 4. separation assembly; 401. liquid storage tank; 402. heating wire; 403. connecting frame; 404. motor; 405. drive shaft; 406. spiral plate; 407. evaporation plate. DETAILED DESCRIPTION

[0019] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0020] like Figure 1 - Figure 8 As shown, a solvent recovery device proposed by the present invention includes a tank body 2, a guide component 3 and a separation component 4. A condensation hood 209 is fixedly installed on the inner wall of the tank body 2. The condensation hood 209 is a cone structure, and a circular liquid guide platform is arranged at the bottom of the condensation hood 209. A heat-conducting hood 207 is welded on the top of the condensation hood 209. A plurality of heat-conducting rods 205 are welded on the top of the heat-conducting hood 207. The tank body 2 is used to provide a location for installing surrounding components, and cooperates with the top cover 1 to provide a closed environment for the recovery process of the solvent. The condensation hood 209 can conduct the temperature of the top and bottom, thereby cooperating with the heat-conducting hood 207 to make the condensation The temperature of the condensation cover 209 itself decreases. When the condensation cover 209 contacts the solvent vapor, the solvent vapor is liquefied at the bottom of the condensation cover 209, thereby completing the recovery of the effective components in the solvent. The heat-conducting cover 207 is made of thermoelectric material. After the heat-conducting cover 207 is powered on, a large temperature difference is generated between the top and the bottom of the heat-conducting cover 207, thereby quickly conducting heat and promoting the cooling of the condensation cover 209. The heat-conducting rod 205 cooperates with the heat-conducting cover 207 to expand the heat dissipation area of ​​the heat-conducting cover 207, thereby enabling the heat inside the tank body 2 to be quickly discharged, so as to assist the cooling of the condensation cover 209 and liquefy the solvent vapor. The top of the tank body 2 is fixed with a top cover 1 by bolts, a T-shaped tube 101 is fixedly installed on the top of the top cover 1, and a vacuum pump 103 is installed on the side of the T-shaped tube 101 through a hose. The top cover 1 can cooperate with the tank body 2 to form a closed space for the recovery of the solvent, and the top cover 1 can be opened to facilitate the assembly and maintenance of the components inside the tank body 2. The three ports of the T-shaped tube 101 are all equipped with valves, which can control the switches of the three ports separately. The T-shaped tube 101 can be connected to an external pipeline to allow the solvent to be recovered and processed to be discharged. The solvent is injected into the tank body 2, and at the same time, the vacuum pump 103 can be used to evacuate the inside of the tank body 2, so that the internal environmental air pressure of the tank body 2 is reduced. By reducing the air pressure and electrically heating, the evaporation of the solvent is promoted, thereby improving the efficiency of the device for solvent recovery. The vacuum pump 103 adopts the 2XZ-2 type. After the vacuum pump 103 is powered on, it can evacuate the inside of the tank body 2 through the T-shaped tube 101, thereby reducing the environmental air pressure value inside the tank body 2. By reducing the air pressure value, the boiling point of the solvent is reduced, thereby promoting the evaporation and recovery of the solvent; A separation assembly 4 is fixedly installed inside the tank body 2, and the separation assembly 4 includes a liquid storage tank 401, a heating wire 402 is installed around the liquid storage tank 401, and a plurality of connecting frames 403 are fixedly installed at the bottom of the liquid storage tank 401, and the connecting frame 403 is fixedly connected to the inner wall of the tank body 2, and a driving shaft 405 is longitudinally installed inside the liquid storage tank 401 through a bearing, and the driving shaft 405 passes through the liquid storage tank 401 and extends to the bottom of the liquid storage tank 401, and a spiral plate 406 is welded on the side of the driving shaft 405, and an evaporation plate 4 is welded on the side of the driving shaft 405 at the top position of the spiral plate 406 07, the evaporation plate 407 and the top of the spiral plate 406 are on the same horizontal plane, and a fan-shaped notch is opened in the evaporation plate 407, and a plurality of guide grooves are arranged on the top surface of the evaporation plate 407, and the evaporation plate 407 is made of silicon carbide ceramic material, and the liquid storage tank 401 can store the solvent to be recycled, so that the solvent can be evaporated through the components inside the liquid storage tank 401, so that the effective components in the solvent are distilled to generate solvent vapor, so as to facilitate the recovery of the solvent, and the heating wire 402 can generate heat after being energized, so as to facilitate the liquid storage tank 401 and the solvent inside The connecting frame 403 can support the liquid storage tank 401, so as to ensure the installation stability of the liquid storage tank 401 and its surrounding components. The driving shaft 405 can be driven to rotate by the driving motor 306, so as to drive the spiral plate 406 and the evaporation disk 407 to rotate. The spiral plate 406 can rotate with the driving shaft 405, so that the solvent in the liquid storage tank 401 can flow upward and flow to the top of the evaporation disk 407. The spiral plate 406 and the evaporation disk 407 cooperate to expand the evaporation area of ​​the solvent, thereby improving the distillation efficiency of the solvent. Made of silicon carbide ceramic material, compared with the liquid storage tank 401 and other components inside it, the evaporation disk 407 has a higher temperature under the same heating method, so that the solvent on the top of the evaporation disk 407 can be distilled more quickly, while the solvents of other components are slowly evaporated by the temperature transmitted by the liquid storage tank 401, the spiral plate 406 and the heating wire 402, so that the various components in the solvent can be distilled through the temperature difference between different materials, so that different components in the solvent can be distilled and recovered according to actual use requirements, thereby improving the practicality of the device; A guide assembly 3 is fixedly installed on the outer side of the liquid storage tank 401, and the guide assembly 3 includes a heat preservation cover 304, which is fixedly connected to the side wall of the liquid storage tank 401, and a plurality of support shaft frames 301 are fixedly installed on the side of the heat preservation cover 304, and a gear ring 302 is installed on the top of the support shaft frame 301, and a guide plate 303 is fixedly installed on one side of the bottom of the gear ring 302, and one side of the guide plate 303 is in conflict with the liquid guide platform on the inner side of the condensation cover 209, and a groove is provided on the top of the guide plate 303, and a plurality of longitudinally arranged drainage holes are provided inside the groove, and the drainage holes pass through the top and bottom of the guide plate 303, and a plurality of racks are provided on the top of the gear ring 302, and the heat preservation cover 304 is made of silicate It is made of aluminum material, which can slow down the heat loss inside the liquid storage tank 401, thereby improving the heating efficiency inside the liquid storage tank 401, and can provide an installation position for the support shaft frame 301. A roller is arranged on the top of the support shaft frame 301, and the roller contacts the bottom of the gear ring 302, so that the gear ring 302 can be supported and easily rotated inside the device. The gear ring 302 can be rotated by the thrust applied by the driving roller 305, and then drive the guide plate 303 to rotate, so as to adjust the position of the guide plate 303, so that the condensed liquid on the inner wall of the condensation hood 209 can fall into different recovery boxes 208 for separate recovery under the guidance of the guide plate 303.

[0021] Furthermore, a motor 404 is fixedly installed at the bottom of the liquid storage tank 401, and the output shaft of the motor 404 is fixedly connected to the drive shaft 405. The motor 404 is of YE3-100KW type. The motor 404 can rotate after being energized, thereby driving the drive shaft 405 to rotate.

[0022] Furthermore, a waste pipe 204 is fixedly installed inside the tank body 2, the top end of the waste pipe 204 extends to the bottom surface of the liquid storage tank 401, and the bottom end of the waste pipe 204 passes through the bottom of the tank body 2 and extends out of the tank body 2. The waste pipe 204 can guide the waste solvent inside the liquid storage tank 401 to be discharged from the tank body 2, so that it can be discharged separately from the recovered solvent from two pipes to avoid cross contamination.

[0023] Furthermore, the bottom of the tank body 2 is a conical structure, and a plurality of support frames 201 are fixedly installed at the bottom of the tank body 2, and a bottom plate 202 is fixedly installed at the bottom of the support frame 201. The support frame 201 and the bottom plate 202 can support the tank body 2, thereby ensuring the stability of the tank body 2 and its surrounding components.

[0024] Furthermore, a discharge pipe 203 is fixedly installed at the bottom of the tank body 2, and an electric butterfly valve is fixedly installed at the connection position between the discharge pipe 203 and the tank body 2. The discharge pipe 203 can discharge the recovered solvent so that the recovered solvent can be taken.

[0025] Furthermore, an air pressure detector 102 is fixedly installed on one side of the top of the top cover 1, and the detection end of the air pressure detector 102 passes through the top cover 1 and extends to the interior of the tank body 2. The air pressure detector 102 is made of SUS3O4 type. The air pressure detector 102 can detect the ambient air pressure value inside the device, so as to cooperate with the vacuum pump 103 to reduce the air pressure value inside the device in the early stage of the device operation, so as to provide a low-pressure environment for the recovery and processing of the solvent.

[0026] Furthermore, a guide tube 206 is fixedly installed at the central position of the heat conductive cover 207 and the condensation cover 209, and the top end of the guide tube 206 coincides with the bottom end of the T-shaped tube 101. The guide tube 206 can guide the solvent to fall vertically into the liquid storage tank 401 to prevent the solvent from flowing to the top of the heat conductive cover 207.

[0027] Furthermore, a plurality of recovery boxes 208 are fixedly installed inside the tank body 2. The recovery boxes 208 are fan-shaped groove structures, and electromagnetic valves are fixedly installed at the bottom of the recovery boxes 208. A heat dissipation fan 210 is fixedly installed on the side of the tank body 2 above the heat-conducting cover 207. The recovery boxes 208 can store different solvents, so that after the device recovers solvents of different components, it is convenient to take solvents of different components. The heat dissipation fan 210 adopts the FDL-4C type. The heat dissipation fan 210 can suck the air in the space above the heat-conducting cover 207, so that the heat inside the heat-conducting cover 207 and the heat-conducting rod 205 is discharged, so as to continuously cool the condensation cover 209.

[0028] Furthermore, a driving roller 305 is clamped and installed above the gear ring 302, and a driving motor 306 is fixedly installed on one side of the driving roller 305, and the driving motor 306 is fixedly connected to the inner wall of the condensation hood 209. The driving motor 306 is of YE3-10KW type. The driving motor 306 can rotate after being energized, thereby driving the driving roller 305 to rotate, so as to control the gear ring 302 to rotate.

[0029] Working principle: After the device is assembled and checked and confirmed to be correct, connect the T-tube 101 to the external pipeline, close the valve at the top of the T-tube 101, open the other two valves, and use the vacuum pump 103 to suck the air inside the device to reduce the air pressure inside the device. After the low-pressure environment is created, close the valve on the side of the T-tube 101, disconnect the T-tube 101 from the vacuum pump 103, open the valves at the top and bottom of the T-tube 101, and inject the solvent into the liquid storage tank 401 through the T-tube 101 and the guide tube 206. After the injection is completed, close all the valves of the T-tube 101 to isolate the internal environment of the device from the external environment. By energizing the heat-conducting cover 207, a temperature difference is formed in the heat-conducting cover 207 to transfer the heat inside the condensation cover 209. The heat-dissipating fan 210 cools the heat-conducting cover 207 and the heat-conducting rod 205 to keep the temperature of the condensation cover 209 within the range of minus 10 degrees Celsius to minus 18 degrees Celsius. After the motor 404 is energized, it rotates, thereby driving the drive shaft 405 and its surrounding components to rotate. The spiral plate 406 drives the solvent inside the liquid storage tank 401 to flow upward, and makes part of the solvent flow to the top of the evaporation disk 407. At the same time, the heating wire 402 generates heat after being energized to heat the liquid storage tank 401 and the solvent and components inside it. The liquid storage tank 401 and the evaporation disk 407 absorb heat to heat the solvent. After that, the solvent is distilled to generate steam. After the steam rises and contacts the condensation hood 209, it is liquefied and falls on the inner wall of the condensation hood 209, and the driving motor 306 drives the driving roller 305 to rotate. The driving roller 305 drives the gear ring 302 to rotate, so that the guide plate 303 moves to the specified position, and contacts the solvent on the inner wall of the condensation hood 209 through the guide plate 303, and guides the solvent to fall into different recovery boxes 208 for separate recovery until the solvent inside the liquid storage tank 401 is completely distilled, and the power supply to the heating wire 402 is stopped, so that the recovered solvent is naturally cooled in the recovery box 208. When taking the solvent, the solenoid valve at the bottom of the recovery box 208 is controlled to discharge the solvent inside the recovery box 208 in sequence.

[0030] The above-mentioned specific embodiments are only several preferred embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. A solvent recovery device, comprising a tank body (2), a guide assembly (3) and a separation assembly (4), characterized in that: A condensation hood (209) is fixedly mounted on the inner wall of the tank body (2); the condensation hood (209) is a conical structure, and a circular liquid guide platform is provided at the bottom of the condensation hood (209); a heat-conducting hood (207) is welded to the top of the condensation hood (209), and a plurality of heat-conducting rods (205) are welded to the top of the heat-conducting hood (207); A top cover (1) is installed on the top of the tank body (2) via bolts, a T-shaped tube (101) is fixedly installed on the top of the top cover (1), and a vacuum pump (103) is installed on the side of the T-shaped tube (101) via a hose; A separation assembly (4) is fixedly installed inside the tank body (2), and the separation assembly (4) comprises a liquid storage tank (401), a heating wire (402) is installed around the inside of the liquid storage tank (401), a plurality of connecting frames (403) are fixedly installed at the bottom of the liquid storage tank (401), and the connecting frames (403) are fixedly connected to the inner wall of the tank body (2), and a driving shaft (405) is longitudinally installed inside the liquid storage tank (401) through a bearing, and the driving shaft (405) passes through the liquid storage tank (401) and The drive shaft (405) extends to the bottom of the liquid storage tank (401), a spiral plate (406) is welded to the side of the drive shaft (405), an evaporation plate (407) is welded to the side of the drive shaft (405) at the top of the spiral plate (406), the evaporation plate (407) and the top of the spiral plate (406) are on the same horizontal plane, a fan-shaped notch is provided in the evaporation plate (407), a plurality of guide grooves are provided on the top surface of the evaporation plate (407), and the evaporation plate (407) is made of silicon carbide ceramic material; A guide assembly (3) is fixedly mounted on the outer side of the liquid storage tank (401), and the guide assembly (3) comprises a heat-insulating cover (304). The heat-insulating cover (304) is fixedly connected to the side wall of the liquid storage tank (401), and a plurality of support shaft frames (301) are fixedly mounted on the side of the heat-insulating cover (304). A gear ring (302) is mounted on the top of the support shaft frame (301), and a guide plate (303) is fixedly mounted on one side of the bottom of the gear ring (302). One side of the guide plate (303) contacts the liquid guide platform on the inner side of the condensation cover (209), and a groove is provided on the top of the guide plate (303). A plurality of drainage holes are longitudinally arranged inside the groove, and the drainage holes pass through the top and bottom of the guide plate (303), and a plurality of racks are provided on the top of the gear ring (302).

2. A solvent recovery device according to claim 1, characterized in that: An electric motor (404) is fixedly mounted on the bottom of the liquid storage tank (401), and an output shaft of the electric motor (404) is fixedly connected to a driving shaft (405).

3. A solvent recovery device according to claim 1, characterized in that: A waste pipe (204) is fixedly installed inside the tank body (2), the top end of the waste pipe (204) extends to the bottom surface inside the liquid storage tank (401), and the bottom end of the waste pipe (204) passes through the bottom of the tank body (2) and extends out of the tank body (2).

4. A solvent recovery device according to claim 1, characterized in that: The bottom of the tank body (2) is a conical structure, and a plurality of support frames (201) are fixedly mounted on the bottom of the tank body (2), and a bottom plate (202) is fixedly mounted on the bottom of the support frame (201).

5. A solvent recovery device according to claim 1, characterized in that: A discharge pipe (203) is fixedly installed at the bottom of the tank body (2), and an electric butterfly valve is fixedly installed at the connection position between the discharge pipe (203) and the tank body (2).

6. A solvent recovery device according to claim 1, characterized in that: An air pressure detector (102) is fixedly mounted on one side of the top of the top cover (1), and a detection end of the air pressure detector (102) passes through the top cover (1) and extends to the interior of the tank body (2).

7. A solvent recovery device according to claim 1, characterized in that: A flow guide pipe (206) is fixedly installed at the central position of the heat conductive cover (207) and the condensation cover (209), and the top end of the flow guide pipe (206) is matched with the bottom end of the T-shaped tube (101).

8. A solvent recovery device according to claim 1, characterized in that: A plurality of recovery boxes (208) are fixedly installed inside the tank body (2), the recovery boxes (208) are of a fan-shaped groove structure, and a solenoid valve is fixedly installed at the bottom of each recovery box (208), and a heat dissipation fan (210) is fixedly installed on the side of the tank body (2) at a position above the heat-conducting cover (207).

9. A solvent recovery device according to claim 1, characterized in that: A driving roller (305) is mounted on the upper side of the gear ring (302), a driving motor (306) is fixedly mounted on one side of the driving roller (305), and the driving motor (306) is fixedly connected to the inner wall of the condensation hood (209).

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