Ceramic filter

Abstract

The invention discloses a ceramic filter, and relates to the technical field of ceramic filters, the ceramic filter comprises a filter, the top of the filter is provided with a monitoring assembly, and one end of the filter is provided with a negative pressure system. The driving machine is movably mounted on the annular track, and the guiding effect of the annular track is matched with the driving movement function of the driving machine, so that the monitoring probe is conveniently driven to move in multiple directions above the filter, and the rotating machine can provide an omnibearing rotating function while moving; the overturning motor can drive the monitoring probe to carry out vertical angle adjustment on the overturning frame, the safety monitoring function can be improved, the independent monitoring device is arranged, the cost expenditure can be reduced, the monitoring efficiency is guaranteed, when the filter is in danger, the filter can be monitored and recognized, calculation analysis is carried out through the calculation module, and the safety of the filter is improved. And a wireless transmission module is arranged in the monitor, so that dangerous information can be transmitted to an equipment terminal at the first time for alarm processing.

Description

Technical Field

[0001] The invention relates to the technical field of ceramic filters, in particular to a ceramic filter. Background Art

[0002] A ceramic filter is a dehydration device primarily composed of ceramic filter plates, a roller system, a stirring system, a feeding and discharging system, a vacuum system, a filtrate discharge system, a scraping system, a backwash system, a combined cleaning system (ultrasonic cleaning, automatic acid cleaning), a fully automatic control system, a tank, and a frame. Maintenance on the ceramic filter requires disassembly of the filter plates.

[0003] In the prior art, for example, a ceramic filter disclosed in Chinese patent number CN111773798A comprises a cylinder, a conical tube clamp fixedly connected to the outer surface of the cylinder, an open slot formed at one end of the conical tube clamp away from the cylinder, a circular hole formed at one end of the open slot close to the cylinder, a fine thread formed on the outer surface of the end of the conical tube clamp close to the cylinder, a clamping block fixedly connected to the inner wall of the end of the conical tube clamp away from the cylinder, a filter plate provided inside the conical tube clamp, an annular groove formed at one end of the filter plate close to the conical tube clamp, a threaded sleeve provided on the outer surface of the conical tube clamp, and an annular oblique block fixedly connected to the inner wall of the end of the threaded sleeve away from the cylinder. The present invention cooperates the threaded sleeve with the fine thread to cause the annular oblique block to squeeze the conical tube clamp, thereby causing the clamping block on the conical tube clamp to engage with the annular groove on the filter plate, thereby facilitating the fixing of the filter plate and improving work efficiency.

[0004] In the prior art, the ceramic filter plates of existing ceramic filters will produce an avalanche effect after being broken, causing a series of equipment components to be affected, thereby causing the equipment to be unable to be used normally, resulting in serious losses. To address the above problem, a ceramic filter is proposed. Summary of the Invention

[0005] The object of the present invention is to provide a ceramic filter to solve the problem in the prior art mentioned above that the ceramic filter discs of the ceramic filter are very easy to break during operation, which will affect the normal use of the equipment after being broken.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a ceramic filter, comprising a filter, a monitoring assembly installed on the top of the filter, a negative pressure system installed at one end of the filter, a controller installed on the top of one end of the filter, a circular track installed on the top of the monitoring assembly, a driving machine movably installed on the top of the circular track, a rotating machine installed on the top of the driving machine, a turning frame installed on the top of the rotating machine, and a monitoring probe movably installed on the inner side of the turning frame; A drainage tank is installed at the bottom of the negative pressure system, a vacuum gauge is provided on the top of the drainage tank, an inlet pipe and a liquid outlet pipe are connected to the top of the drainage tank, a first pressure gauge is provided at the middle end of the liquid inlet pipe, a second pressure gauge is provided at the middle section of the liquid outlet pipe, a connecting tank is installed on the top of the negative pressure system, a third pressure gauge is installed on the top of the connecting tank, and one end of the liquid inlet pipe and the liquid outlet pipe are both connected to one end of the connecting tank.

[0007] Preferably, a shell is provided on the outside of the controller, a control button is installed on one side of the top of the shell, and an alarm light is installed on the other side of the top of the shell.

[0008] Preferably, a top plate is installed on the top of the filter, a bottom trough is installed on the bottom of the top plate, and a rotating seat is installed at one end of the top plate.

[0009] Preferably, a plurality of scrapers are evenly distributed on one side of the bottom trough, one end of the scraper is connected to one side of the top plate, a rotating shaft is installed on the inner side of the top plate, one end of the rotating shaft is movably connected to the inner side of the rotating seat, and one end of the rotating shaft is connected to the other end of the connecting tank.

[0010] Preferably, a plurality of ceramic filter discs are evenly distributed on the outer wall of the rotating shaft, and the ceramic filter discs are distributed on the inner sides of the top plate and the bottom groove, and the outer sides of the ceramic filter discs are clamped on the inner side of the scraper.

[0011] Preferably, a motor is provided on the top of one end of the top plate, one end of the motor is wound around and connected to a transmission belt, and one end of the transmission belt is wound around and connected to the outer wall of the other end of the rotating shaft.

[0012] Preferably, a connecting plate is fixedly installed on the inner side of the annular track, a support rod is fixedly installed on the bottom of the connecting plate, a socket is movably connected to the bottom of the support rod, and the bottom of the socket is installed on the top of the top plate.

[0013] Preferably, a driving wheel is movably installed at the bottom of the driving machine, a guide plate is installed at the bottom of the driving machine, guide wheels are symmetrically installed at both ends of the guide plate, the guide wheels are movably clamped at the top of the circular track, and the driving wheel is movably installed at the top of the circular track.

[0014] Preferably, a turning motor is installed on one side of the turning frame, and one end of the turning motor passes through the inner side of the turning frame and is connected to the side surface of the monitoring probe.

[0015] Preferably, a vacuum pump is installed at the bottom of one side of the negative pressure system, a serpentine tube is installed on the side of the vacuum pump, one end of the U-shaped tube is fixedly connected to the U-shaped tube, one end of the U-shaped tube is fixedly connected to the side wall of the drainage tank, and a fixing seat is fixedly installed at the bottom of the vacuum pump.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, the driving machine is movably installed on the annular track, and the guiding effect of the annular track is used in combination with the driving movement function of the driving machine, so that the monitoring probe can be driven to move in multiple directions above the filter. While moving, the rotating machine can provide an all-round rotation function, and the flip motor can drive the monitoring probe to adjust the up and down angles on the flip frame, thereby realizing an automated all-round monitoring effect, which is beneficial to improving the function of safety monitoring. The provision of independent monitoring is beneficial to reducing cost expenditure and ensuring monitoring efficiency, so that when a dangerous situation occurs in the filter, it can be identified through monitoring and analyzed by the computing module. The monitoring has a built-in wireless transmission module, which is beneficial to transmitting the dangerous information to the equipment terminal for alarm processing in the first time, effectively reducing losses.

[0017] 2. In the present invention, the drainage tank can be coordinated with the liquid inlet pipe and the liquid outlet pipe to achieve communication with the connecting tank, and the connecting tank is in a connected state with the rotating shaft and the interior of the ceramic filter, which is conducive to cooperating with the pump to generate negative pressure at the position of the ceramic filter to achieve adsorption. When the ceramic filter is broken, it will cause the air discharge pressure to decrease. At this time, the vacuum gauge, the first pressure gauge, the second pressure gauge and the third pressure gauge can all detect the pressure change. In the event of pressure loss, it will be further calculated and analyzed by the control equipment and the alarm will be synchronized, and mutual cooperation with the monitoring probe will be achieved, which further improves the accuracy of the detection and effectively avoids false alarms, thereby ensuring timely response and processing.

[0018] 3. In the present invention, when damage occurs and danger is accurately detected, analysis and calculation can be performed through the control mainboard inside the shell, and the control buttons can be controlled, thereby realizing automatic power-off and shutdown of operation processing, providing an extremely fast processing effect, thereby ensuring that the loss is minimized, and the alarm light sounds an alarm, which is conducive to improving the reminder effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A three-dimensional diagram of a ceramic filter according to the present invention; Figure 2 This is a schematic structural diagram of a ceramic filter according to the present invention from another angle; Figure 3 This is a partial structural diagram of a ceramic filter according to the present invention; Figure 4 This is a schematic structural diagram of a monitoring component of a ceramic filter according to the present invention; Figure 5 This is an enlarged structural diagram of point A of a ceramic filter of the present invention; Figure 6The figure is a schematic structural diagram of an air pressure detection component of a ceramic filter according to the present invention.

[0020] In the picture: 1. Filter; 101. Top plate; 102. Bottom trough; 103. Rotating seat; 104. Scraper; 105. Rotating shaft; 106. Ceramic filter disc; 107. Motor; 108. Drive belt; 2. Monitoring assembly; 201. Circular track; 202. Support rod; 203. Socket seat; 204. Driving machine; 205. Driving wheel; 206. Guide wheel; 207. Rotating machine; 208. Turning frame; 209. Turning motor ; 210. Monitoring probe; 3. Negative pressure system; 301. Vacuum pump; 302. Serpentine tube; 303. U-shaped tube; 304. Drain tank; 305. Fixed seat; 306. Vacuum gauge; 307. Liquid inlet pipe; 308. Liquid outlet pipe; 309. First pressure gauge; 310. Second pressure gauge; 311. Connecting tank; 312. Third pressure gauge; 4. Controller; 401. Shell; 402. Control button; 403. Alarm light. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0022] Reference Figures 1-6As shown: A ceramic filter includes a filter 1, a monitoring component 2 is installed on the top of the filter 1, a negative pressure system 3 is installed at one end of the filter 1, a controller 4 is installed on the top of one end of the filter 1, a circular track 201 is installed on the top of the monitoring component 2, a driving machine 204 is movably installed on the top of the circular track 201, a rotating machine 207 is installed on the top of the driving machine 204, a flip frame 208 is installed on the top of the rotating machine 207, and a monitoring probe 210 is movably installed on the inner side of the flip frame 208. By movably installing the driving machine 204 on the circular track 201, utilizing the guiding effect of the circular track 201 in conjunction with the driving movement function of the driving machine 204, it is convenient to bring The dynamic monitoring probe 210 moves in multiple directions above the filter 1. While moving, the rotating mechanism 207 can provide an all-round rotation function. The flip motor 209 can drive the monitoring probe 210 to adjust the angle up and down on the flip frame 208, thereby achieving an automated all-round monitoring effect, which is beneficial to improving the function of safety monitoring. The independent monitoring is also beneficial to reducing costs and ensuring monitoring efficiency. When a dangerous situation occurs in the filter, it can be identified through monitoring and analyzed by the computing module. The built-in wireless transmission module of the monitoring is beneficial to immediately transmit the dangerous information to the equipment terminal for alarm processing, effectively reducing losses. A drain tank 304 is installed at the bottom of the negative pressure system 3, a vacuum gauge 306 is provided on the top of the drain tank 304, a liquid inlet pipe 307 and a liquid outlet pipe 308 are connected to the top of the drain tank 304, a first pressure gauge 309 is provided at the middle end of the liquid inlet pipe 307, a second pressure gauge 310 is provided at the middle section of the liquid outlet pipe 308, a connecting tank 311 is installed on the top of the negative pressure system 3, a third pressure gauge 312 is installed on the top of the connecting tank 311, one end of the liquid inlet pipe 307 and the liquid outlet pipe 308 are connected to one end of the connecting tank 311, and the drain tank 304 can be connected to the liquid inlet pipe 307 and the liquid outlet pipe 308 to achieve communication with the connecting tank 311, and the connecting tank 311 is connected to the rotating shaft The interior of 105 and the ceramic filter 106 are in a connected state, which is conducive to cooperating with the pump to generate negative pressure at the position of the ceramic filter 106 to achieve adsorption. When the ceramic filter 106 is broken, it will cause the air leakage pressure to decrease. At this time, the vacuum gauge 306, the first pressure gauge 309, the second pressure gauge 310 and the third pressure gauge 312 can all detect the pressure change. If there is a loss of pressure, it will be further calculated and analyzed by the control equipment and an alarm will be issued synchronously. It cooperates with the monitoring probe 210 to further improve the accuracy of the detection and effectively avoid false alarms, which is conducive to ensuring timely response and processing, and effectively reducing losses.

[0023] like Figure 3As shown, a shell 401 is provided on the outside of the controller 4, a control button 402 is installed on one side of the top of the shell 401, and an alarm light 403 is installed on the other side of the top of the shell 401. When damage occurs and danger is accurately detected, the control main board inside the shell 401 can be used for analysis and calculation, and the control button 402 can be controlled, thereby realizing automatic power-off and shutdown of operation processing, providing an extremely fast processing effect, thereby ensuring that the loss is minimized, and the alarm light 403 issues an alarm, which is conducive to improving the reminder effect.

[0024] like Figure 3 As shown, a top plate 101 is installed on the top of the filter 1, a bottom groove 102 is installed on the bottom of the top plate 101, and a rotating seat 103 is installed at one end of the top plate 101. The top plate 101 facilitates the installation and support of the equipment of the filter in conjunction with the frame, and at the same time facilitates the stable installation of the bottom groove 102. The rotating seat 103 facilitates the connection and support of one end of the rotating shaft 105 and provides a stable rotation effect.

[0025] like Figure 3 As shown, a plurality of scrapers 104 are evenly distributed on one side of the bottom trough 102, one end of the scraper 104 is connected to one side of the top plate 101, a rotating shaft 105 is installed on the inner side of the top plate 101, one end of the rotating shaft 105 is movably connected to the inner side of the rotating seat 103, and one end of the rotating shaft 105 is connected to the other end of the connecting tank 311. The scraper 104 can be used to scrape off the surface material when the rotating shaft 105 drives the ceramic filter plate 106 to flip through this position to ensure subsequent filtration work.

[0026] like Figure 3 As shown, a plurality of ceramic filter discs 106 are evenly distributed on the outer wall of the rotating shaft 105. The ceramic filter discs 106 are distributed on the inner side of the top plate 101 and the bottom groove 102. The outer side of the ceramic filter disc 106 is clamped on the inner side of the scraper 104. The ceramic filter disc 106 can realize effective adsorption and filtration functions, and cooperate with the scraper 104 to further realize effective scraping effect during the filtration process.

[0027] like Figure 3 As shown, a motor 107 is provided on the top of one end of the top plate 101, and a transmission belt 108 is wound around one end of the motor 107 and connected to the outer wall of the other end of the rotating shaft 105. The driving force can be provided by the motor 107, and then transmitted to the rotating shaft 105 through the transmission belt 108, thereby driving the rotating shaft 105 to rotate effectively, thereby completing the work of driving the ceramic filter 106 to flip.

[0028] like Figure 4As shown, a connecting plate is fixedly installed on the inner side of the annular track 201, a support rod 202 is fixedly installed on the bottom of the connecting plate, and a socket 203 is movably connected to the bottom of the support rod 202, and the bottom of the socket 203 is installed on the top of the top plate 101. The connecting plate can provide a supporting connection effect for the installation of the support rod 202, so that the support rod 202 is stably connected and supported on the inner side of the socket 203. At the same time, the socket 203 can provide a disassembly effect between the support rod 202, which is convenient for disassembly, maintenance and repair of the components of the monitoring component 2.

[0029] like Figure 5 As shown, a driving wheel 205 is movably installed at the bottom of the driving machine 204, a guide plate is installed at the bottom of the driving machine 204, and guide wheels 206 are symmetrically installed at both ends of the guide plate. The guide wheel 206 is movably clamped at the top of the circular track 201, and the driving wheel 205 is movably installed at the top of the circular track 201. The cooperation between the driving wheel 205 and the driving machine 204 can achieve the effect of effective driving movement, thereby providing an effective cyclic mobile monitoring effect, improving the monitoring range and reducing the cost investment. The guide wheel 206 can provide guidance during the movement, which is conducive to turning and improving stability during the movement.

[0030] like Figure 5 As shown, a flip motor 209 is installed on one side of the flip frame 208. One end of the flip motor 209 passes through the inner side of the flip frame 208 and is connected to the side of the monitoring probe 210. The flip motor 209 can provide a flip drive function, thereby facilitating the electric rotation adjustment of the angle of the monitoring probe 210.

[0031] like Figure 6 As shown, a vacuum pump 301 is installed at the bottom of one side of the negative pressure system 3, a serpentine tube 302 is installed on the side of the vacuum pump 301, one end of the U-shaped tube 303 is fixedly connected to the U-shaped tube 303, and one end of the U-shaped tube 303 is fixedly connected to the side wall of the drainage tank 304. A fixing seat 305 is fixedly installed at the bottom of the vacuum pump 301. The vacuum pump 301 can provide a motor rotation pumping effect, and is connected to the serpentine tube 302, which is convenient for sucking in or discharging liquid and effectively realizing the filtering function. The U-shaped tube 303 can be connected to the drainage tank 304 to provide an effective transmission effect, and the fixing seat 305 facilitates the provision of a stable support effect for the vacuum pump 301.

[0032] In the present invention, when the ceramic filter is in use, first, the top plate 101 facilitates the installation and support of the equipment of the filter in conjunction with the frame, and at the same time facilitates the stable installation of the bottom tank 102. The rotating seat 103 facilitates the connection and support of one end of the rotating shaft 105 and provides a stable rotation effect. The scraper 104 can be used to drive the ceramic filter 106 to flip through this position to scrape the surface material to ensure subsequent filtration work. The ceramic filter 106 can achieve effective adsorption and filtration functions, and the scraper 104 can further achieve an effective scraping effect during the filtration process. The motor 107 can provide driving force, which is then transmitted to the rotating shaft 105 through the transmission belt 108, thereby driving the rotating shaft 10 5 realizes effective rotation and completes the flipping work of driving the ceramic filter 106. The driving machine 204 is movably installed on the circular track 201. The guiding function of the circular track 201 is combined with the driving function of the driving machine 204 to drive the monitoring probe 210 to move in multiple directions above the filter 1. While moving, the rotating machine 207 can provide an all-round rotation function. The flip motor 209 can drive the monitoring probe 210 to adjust the up and down angles on the flip frame 208, thereby realizing an automatic all-round monitoring effect, which is beneficial to improving the function of safety monitoring. In addition, the independent monitoring is beneficial to reducing cost expenditure and ensuring monitoring efficiency, so that when a dangerous situation occurs in the filter, the monitoring machine can be identified through monitoring. In addition, the calculation and analysis are carried out by the calculation module, and the monitoring is equipped with a built-in wireless transmission module, which is conducive to transmitting the danger information to the equipment terminal for alarm processing in the first time, effectively reducing the loss. The connecting plate can provide a supporting connection effect for the installation of the support rod 202, so that the support rod 202 is stably connected to the inner side of the socket 203. At the same time, the socket 203 can provide a disassembly effect between the support rod 202, which is convenient for disassembly, maintenance and inspection of the components of the monitoring component 2. The cooperation between the driving wheel 205 and the driving machine 204 can realize the effect of effective driving movement, thereby providing an effective circular mobile monitoring effect, improving the monitoring range and reducing the cost investment. The guide wheel 206 can be used to provide a It provides a guiding function, which is beneficial for turning and improving the stability during movement. The flip motor 209 can provide a flip drive function, thereby facilitating the electric rotation adjustment of the monitoring probe 210. The drainage tank 304 can be connected with the liquid inlet pipe 307 and the liquid outlet pipe 308 to the connecting tank 311, and the connecting tank 311 is connected with the interior of the rotating shaft 105 and the ceramic filter 106, which is beneficial for cooperating with the pump to generate negative pressure at the position of the ceramic filter 106 to achieve adsorption. When the ceramic filter 106 is broken, it will cause the air release pressure to decrease. At this time, the vacuum gauge 306, the first pressure gauge 309, the second pressure gauge 310 and the third pressure gauge 312 can all detect the pressure change.In the event of a loss of pressure, the control device will further perform calculations and analysis, and a synchronous alarm will be issued. This will work in conjunction with the monitoring probe 210, further improving the accuracy of detection and effectively avoiding false alarms, thereby ensuring timely response and processing, effectively reducing losses. When damage occurs and danger is accurately detected, the control board inside the housing 401 can perform analysis and calculations, and control the control button 402, thereby achieving automatic power-off and shutdown processing, providing an extremely fast processing effect, thereby ensuring that losses are minimized. The alarm light 403 issues an alarm, which helps to improve the effectiveness of the reminder.

[0033] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A ceramic filter, comprising a filter (1), characterized in that: A monitoring assembly (2) is installed on the top of the filter (1), a negative pressure system (3) is installed on one end of the filter (1), a controller (4) is installed on the top of one end of the filter (1), a circular track (201) is installed on the top of the monitoring assembly (2), a driving machine (204) is movably installed on the top of the circular track (201), a rotating machine (207) is installed on the top of the driving machine (204), a turning frame (208) is installed on the top of the rotating machine (207), and a monitoring probe (210) is movably installed on the inner side of the turning frame (208); A drain tank (304) is installed at the bottom of the negative pressure system (3), a vacuum gauge (306) is installed at the top of the drain tank (304), a liquid inlet pipe (307) and a liquid outlet pipe (308) are connected to the top of the drain tank (304), a first pressure gauge (309) is installed at the middle end of the liquid inlet pipe (307), and a second pressure gauge (310) is installed at the middle section of the liquid outlet pipe (308), a connecting tank (311) is installed at the top of the negative pressure system (3), a third pressure gauge (312) is installed at the top of the connecting tank (311), and one end of each of the liquid inlet pipe (307) and the liquid outlet pipe (308) is connected to one end of the connecting tank (311).

2. The ceramic filter according to claim 1, characterized in that: A housing (401) is provided on the outside of the controller (4), a control button (402) is installed on one side of the top of the housing (401), and an alarm light (403) is installed on the other side of the top of the housing (401).

3. The ceramic filter according to claim 1, characterized in that: A top plate (101) is installed on the top of the filter (1), a bottom groove (102) is installed on the bottom of the top plate (101), and a rotating seat (103) is installed on one end of the top plate (101).

4. The ceramic filter according to claim 3, characterized in that: A plurality of scrapers (104) are evenly distributed on one side of the bottom trough (102), one end of each scraper (104) is connected to one side of the top plate (101), a rotating shaft (105) is installed on the inner side of the top plate (101), one end of each rotating shaft (105) is movably connected to the inner side of the rotating seat (103), and one end of each rotating shaft (105) is connected to the other end of the connecting tank (311).

5. The ceramic filter according to claim 4, characterized in that: A plurality of ceramic filter discs (106) are evenly distributed on the outer wall of the rotating shaft (105), and the ceramic filter discs (106) are distributed on the inner sides of the top plate (101) and the bottom groove (102). The outer sides of the ceramic filter discs (106) are clamped on the inner side of the scraper (104).

6. The ceramic filter according to claim 5, characterized in that: A motor (107) is provided on the top of one end of the top plate (101), one end of the motor (107) is wound around and connected to a transmission belt (108), and one end of the transmission belt (108) is wound around and connected to the outer wall of the other end of the rotating shaft (105).

7. The ceramic filter according to claim 1, characterized in that: A connecting plate is fixedly mounted on the inner side of the annular track (201), a support rod (202) is fixedly mounted on the bottom of the connecting plate, a socket (203) is movably connected to the bottom of the support rod (202), and the bottom of the socket (203) is mounted on the top of the top plate (101).

8. The ceramic filter according to claim 7, characterized in that: A driving wheel (205) is movably mounted on the bottom of the driving machine (204), a guide plate is mounted on the bottom of the driving machine (204), guide wheels (206) are symmetrically mounted on both ends of the guide plate, the guide wheels (206) are movably clamped on the top of the annular track (201), and the driving wheel (205) is movably mounted on the top of the annular track (201).

9. The ceramic filter according to claim 8, characterized in that: A turning motor (209) is installed on one side of the turning frame (208), and one end of the turning motor (209) passes through the inner side of the turning frame (208) and is connected to the side of the monitoring probe (210).

10. The ceramic filter according to claim 1, characterized in that: A vacuum pump (301) is installed at the bottom of one side of the negative pressure system (3), a serpentine tube (302) is installed on the side of the vacuum pump (301), one end of the U-shaped tube (303) is fixedly connected to the U-shaped tube (303), one end of the U-shaped tube (303) is fixedly connected to the side wall of the drainage tank (304), and a fixing seat (305) is fixedly installed at the bottom of the vacuum pump (301).

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