A high-efficiency energy-saving heat exchanger convenient to clean

Abstract

The application relates to the technical field of heat exchanger cleaning, and discloses a high-efficiency energy-saving heat exchanger convenient to clean, which comprises an input pipeline, a dust removal device is installed at the inlet of the input pipeline, a cleaning mechanism is installed on the inner wall of the input pipeline and close to a filtering mechanism, the filtering mechanism is installed in the cleaning mechanism and is used for liquid impurity filtering operation, compressed air generated by the dust removal device is delivered to the inside of the cleaning mechanism, the cleaning mechanism is driven to clean the impurities on the surface of the filtering mechanism, the cleaning mechanism is provided, compressed air generated by the dust removal device is delivered to the inside of the filter hole through the first Y-shaped pipe, the rubber plate and the delivery branch pipe, the impurities in the filter hole of the filter plate are cleaned by air, the impurities are prevented from being blocked in the filter hole of the filter plate, the working efficiency of the whole device is affected, whether the filter hole of the filter plate is damaged or whether the filter hole of the filter plate and one side are not completely cleaned is detected.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heat exchanger cleaning, more particularly to a high-efficiency energy-saving heat exchanger convenient to clean. BACKGROUND

[0002] The heat exchanger is a heat exchange device, mainly used for transferring heat between fluids at different temperatures, wherein the common heat exchanger is mainly composed of a heat exchanger, a pipeline system, a water pump, a valve and a metering device, and the specific working process of the heat exchanger is as follows: starting the water pump, conveying the fluid to be treated to the heat exchanger through the pipeline system, in the heat exchanger, the cold fluid and the hot fluid exchange heat through the heat transfer surface of the heat exchanger, and the fluid after heat exchange is discharged from the heat exchange system through the pipeline system, and in the whole heat exchange process, the flow, pressure, temperature, liquid level and other parameters of the fluid are continuously monitored, and the operation state of the heat exchanger is adjusted in time according to the monitoring results.

[0003] With the increase of use time, various impurities such as dirt, particulate matter and microorganisms may accumulate in the heat exchanger, which will affect the heat exchange efficiency of the heat exchanger, and even cause equipment failure. Therefore, the heat exchanger is filtered to remove these impurities, and the common filtering method is to install a filter plate inside the pipeline to achieve the effect of impurity filtration. However, in long-term observation, we found that part of the impurities stay on the surface of the filter plate, and the accumulation of impurities on the surface of the filter plate forms a blocking layer, which increases the resistance of water flow through the filter plate, and thus increases the pressure loss of water flow through the filter plate, reduces the flow and pressure of water flow, and affects the operating efficiency of the whole system. In the prior art, the surface of the filter plate is scraped by external force to clean the impurities remaining on the surface of the filter plate. However, in actual operation, we found that the impurities in the filter holes of the filter plate cannot be cleaned, thus reducing the working efficiency of the filter plate and affecting the transportation efficiency of the whole system, causing certain economic loss.

[0004] Therefore, there is an urgent need for a high-efficiency energy-saving heat exchanger convenient to clean to solve the above-mentioned problems. SUMMARY

[0005] In order to overcome the above-mentioned defects of the prior art, the present application provides a high-efficiency energy-saving heat exchanger convenient to clean to solve the problems existing in the background art.

[0006] The present application provides the following technical scheme: a high-efficiency energy-saving heat exchanger convenient to clean, comprising a heat exchanger, wherein the heat exchanger comprises a main body, a support is welded to the bottom of the main body, an output pipeline is installed at the position close to the support on the bottom of the main body, and an input pipeline is installed at the position close to the output pipeline on the top of the main body.

[0007] The dust removal device is installed at the inlet of the input pipeline, the inner wall of the input pipeline is provided with a cleaning mechanism near the filtering mechanism, the cleaning mechanism is internally provided with the filtering mechanism for liquid impurity filtering operation, the dust removal device generates gas to be delivered to the inside of the cleaning mechanism to drive the cleaning mechanism to clean the impurities on the surface of the filtering mechanism.

[0008] Further, the dust removal device comprises a dust removal box, the bottom of the dust removal box is provided with a suction pump, the inner wall of the top of the dust removal box is through-connected with a second delivery pipe, the suction pump generates suction air to be delivered to the inside of the cleaning mechanism through the dust removal box and the second delivery pipe to drive the cleaning mechanism to adsorb the impurities on the surface of the filtering mechanism.

[0009] Further, the inner wall of the side of the dust removal box is provided with an air pump, the output end of the air pump is provided with a first delivery pipe, the air pump generates compressed air to be delivered to the first delivery pipe through the first delivery pipe;

[0010] The second delivery pipe is provided with a second Y-shaped pipe away from the dust removal box, and the first delivery pipe is provided with a first Y-shaped pipe away from the air pump.

[0011] Further, the filtering mechanism comprises first limiting plates, the number of the first limiting plates is two groups, the top of one group of the first limiting plates is provided with a second limiting plate, the cleaning mechanism is installed on the side of the second limiting plate and the two groups of the first limiting plates, the middle position of one group of the first limiting plates is provided with a filtering plate, and the inner wall of one group of the first limiting plates is provided with a clamping groove matched with the filtering plate at a position close to the filtering plate for fixing the filtering plate.

[0012] Further, the cleaning mechanism comprises first limiting support plates, second limiting support plates and rubber rings, the first limiting support plates and the second limiting support plates are installed on the side of the filtering mechanism in a vertical parallel state, the inner walls of the first limiting support plates and the second limiting support plates are both provided with electric lifting columns, one end of each electric lifting column is provided with a hollow plate, the inner wall of the hollow plate movably sleeves a scraping plate, the bottom of the scraping plate is provided with a spring, and the number of the scraping plates is multiple groups, the multiple groups of the scraping plates are in a sleeving relationship, and the two sides of the hollow plate movably sleeve the inner wall of a sliding rail plate.

[0013] The scraping plates provided on the inner walls of the first limiting support plates and the second limiting support plates all contact the surface of the filtering plate, the side of the scraping plate is provided with a rubber plate, the top of the rubber plate installed in the second limiting support plate is through-connected with a suction pipe, the dust removal device generates suction air to be delivered to the surface of the filtering plate through the rubber plate and the suction pipe for adsorption operation of the impurities after scraping, the side of the top of the hollow plate installed in the second limiting support plate is provided with an air pressure monitor, and the inside of the air pressure monitor is provided with a control module.

[0014] Further, the bottom of the rubber plate installed in the first limiting support plate is connected with a conveying branch pipe, and the dust removal device generates compressed air to be conveyed to the rubber plate and the filter hole of the filter plate, so as to clean the impurities in the filter hole.

[0015] Further, the air pressure monitor collects the air pressure data in the isolation space formed by the two groups of rubber plates and sends it to the control module. The control module includes a threshold value and a light reminder device. When the filter plate is in normal working condition, the threshold air pressure data generated by the air pressure monitor is inputted manually. The control module compares the real-time air pressure data with the threshold air pressure data. When the real-time air pressure data is greater than the threshold air pressure data, the control module determines that the filter hole and one side of the filter plate are not completely cleaned. The control module drives the dust removal device and the cleaning mechanism to perform secondary cleaning of the filter plate.

[0016] When the real-time air pressure data is less than the threshold range, it can be determined that the filter hole or one side of the filter plate is damaged. The control module reminds the on-site worker to check through the light reminder device.

[0017] The technical effects and advantages of the present application are as follows:

[0018] 1. The cleaning mechanism is provided, which is beneficial to input current to the two groups of electric lifting columns, control the two groups of hollow plates to move to the surface of the filter plate, and control the two groups of rubber plates to move to the specified position. The two groups of rubber plates and the rubber ring form an isolation space, and the filter plate is located in the middle of the isolation space. The dust removal device first generates compressed air to be conveyed to the filter hole through the first Y-shaped pipe, the rubber plate and the conveying branch pipe, so as to clean the impurities in the filter hole of the filter plate by air force, avoid the impurities from being blocked in the filter hole of the filter plate, and thus affect the working efficiency of the whole device.

[0019] 2. The cleaning mechanism is provided, which is beneficial to input current to the two groups of electric lifting columns after the first scratch cleaning of the filter plate by the cleaning mechanism, control the two groups of rubber plates to be attached to the outer wall of the filter plate again, input compressed air into the isolation space formed by the two groups of rubber plates by the dust removal device, and monitor the air pressure data in the isolation space by the air pressure monitor and send it to the control module. The control module analyzes and determines whether the filter hole of the filter plate is damaged or whether the filter hole and one side of the filter plate are not completely cleaned. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a schematic diagram of the whole structure of the present application.

[0021] Figure 2 It is a schematic diagram of part of the structure of the present application.

[0022] Figure 3 It is the input pipeline part structure schematic diagram of the application.

[0023] Figure 4 It is the input pipeline part structure sectional view schematic diagram of the application.

[0024] Figure 5 It is the dust removal box overall structure sectional view schematic diagram of the application.

[0025] Figure 6 It is the cleaning mechanism overall structure schematic diagram of the application.

[0026] Figure 7 It is the first limiting plate overall structure sectional view schematic diagram of the application.

[0027] Figure 8 It is the first limiting plate overall structure sectional view schematic diagram of the application.

[0028] Figure 9 It is the conveying pipe overall structure schematic diagram of the application.

[0029] Figure 10 It is the second limiting plate overall structure sectional view schematic diagram of the application.

[0030] Figure 11 It is the adsorption pipe overall structure schematic diagram of the application.

[0031] The figure mark is: 1, heat exchanger; 101, main body; 102, support; 103, output pipeline; 104, input pipeline; 2, dust removal device; 201, dust removal box; 202, adsorption pump; 203, first conveying pipe; 2031, first Y type pipe; 204, second conveying pipe; 2041, second Y type pipe; 205, air pump; 3, filtering mechanism; 301, filter plate; 302, first limiting plate; 303, second limiting plate; 4, cleaning mechanism; 401, first limiting plate; 402, second limiting plate; 403, rubber ring; 404, slide rail plate; 405, hollow plate; 406, rubber plate; 407, conveying branch pipe; 408, electric lifting column; 409, scraping plate; 410, air pressure monitor; 411, adsorption pipe. DETAILED DESCRIPTION

[0032] The technical solutions in the application will be described clearly and completely below in combination with the drawings in the application, and additionally, the forms of each structure described in the following embodiments are only examples, and the high-efficiency energy-saving heat exchanger convenient to clean involved in the application is not limited to each structure described in the following embodiments, and all other embodiments obtained by the person skilled in the art without making creative efforts belong to the protection scope of the application.

[0033] Referring to Figures 1 to 3 As shown in the figure, the application provides a high-efficiency energy-saving heat exchanger convenient to clean, comprising a heat exchanger 1, the heat exchanger 1 comprises a main body 101, a support 102 is welded at the bottom of the main body 101, an output pipeline 103 is installed at the bottom of the main body 101 near the support 102, and an input pipeline 104 is installed at the top of the main body 101 near the output pipeline 103.

[0034] A dust removal device 2 is installed at the inlet of the input pipeline 104, a cleaning mechanism 4 is installed on the inner wall of the input pipeline 104 near the filtering mechanism 3, the filtering mechanism 3 is installed in the cleaning mechanism 4, and the filtering mechanism 3 is used for liquid impurity filtering operation; the dust removal device 2 generates gas and sends the gas to the inside of the cleaning mechanism 4, and the cleaning mechanism 4 drives the cleaning mechanism 4 to clean the impurities on the surface of the filtering mechanism 3.

[0035] In the embodiment, the specific working process of the part of the application is as follows: liquid is input into the inside of the main body 101 through the input pipeline 104 under the action of the pump, heat exchange operation is performed, the exchanged liquid is discharged through the output pipeline 103, the filtering mechanism 3 performs impurity filtering operation on the input liquid, the dust removal device 2 generates gas and sends the gas to the inside of the cleaning mechanism 4, and the cleaning mechanism 4 drives the cleaning mechanism 4 to clean the impurities on the surface of the filtering mechanism 3.

[0036] Referring to Figures 2 to 11 As shown in the figure, the application provides a high-efficiency energy-saving heat exchanger convenient to clean, the dust removal device 2 comprises a dust removal box 201, an adsorption pump 202 is installed at the bottom of the dust removal box 201, a second conveying pipe 204 is connected through the inner wall at the top of the dust removal box 201, the adsorption pump 202 generates adsorption air and inputs the adsorption air into the inside of the cleaning mechanism 4 through the dust removal box 201 and the second conveying pipe 204, and the cleaning mechanism 4 drives the cleaning mechanism 4 to perform adsorption operation on the impurities on the surface of the filtering mechanism 3.

[0037] A gas pump 205 is installed on the inner wall of the side of the dust removal box 201, a first conveying pipe 203 is installed at the output end of the gas pump 205, and the gas pump 205 generates compressed air and sends the compressed air to the first conveying pipe 203 through the first conveying pipe 203.

[0038] The second conveying pipe 204 is provided with a second Y-shaped pipe 2041 away from the dust removal box 201, and the first conveying pipe 203 is provided with a first Y-shaped pipe 2031 away from the gas pump 205.

[0039] An adsorption hole is formed in the outer wall of the dust removal box 201 near the input hole of the gas pump 205, which is conducive to the input of external air into the inside of the gas pump 205.

[0040] In the implementation of the present application, the specific implementation of the part of the application examples is that the surface of the filtering mechanism 3 is cleaned, the air pump 205 inputs current to generate compressed air which is delivered to the inside of the cleaning mechanism 4 through the first conveying pipe 203 and the first Y-shaped pipe 2031, the auxiliary cleaning mechanism 4 performs cleaning work on the impurities on the surface of the filtering mechanism 3, the adsorption pump 202 generates adsorption air which is delivered to the cleaning mechanism 4 through the dust removal box 201, the second conveying pipe 204 and the second Y-shaped pipe 2041, and performs adsorption work on the cleaned impurities, so that the cleaned impurities are stored in the dust removal box 201, and the staff can conveniently recycle them later.

[0041] Referring to Figure 4 and Figures 6 to 7 , the present application provides a high-efficiency energy-saving heat exchanger convenient to clean, the filtering mechanism 3 comprises a first limiting plate 302, the number of the first limiting plate 302 is two groups, the top of a group of the first limiting plate 302 is provided with a second limiting plate 303, the cleaning mechanism 4 is installed on the side surface of the second limiting plate 303 and the two groups of the first limiting plate 302, a group of the first limiting plate 302 is installed with a filter plate 301 at the middle position, and a clamping groove matched with the filter plate 301 is formed in the inner wall of a group of the first limiting plate 302 close to the filter plate 301, for fixing the filter plate 301.

[0042] Referring to Figure 4 and Figures 6 to 11 , the present application provides a high-efficiency energy-saving heat exchanger convenient to clean, the cleaning mechanism 4 comprises a first limiting support plate 401, a second limiting support plate 402 and a rubber ring 403, the first limiting support plate 401 and the second limiting support plate 402 are installed on the side surface of the filtering mechanism 3 in a vertical parallel state, the inner walls of the first limiting support plate 401 and the second limiting support plate 402 are both installed with an electric lifting column 408, one end of the electric lifting column 408 is installed with a hollow plate 405, the inner wall of the hollow plate 405 movably sleeves a scraping plate 409, the bottom of the scraping plate 409 is installed with a spring, the number of the scraping plate 409 is multiple groups, and the multiple groups of the scraping plate 409 are in a sleeving relationship, and the two sides of the hollow plate 405 movably sleeve the inner wall of a sliding rail plate 404.

[0043] The scraping plate 409 arranged on the inner wall of the first limiting support plate 401 and the second limiting support plate 402 contacts the surface of the filter plate 301, the side surface of the scraping plate 409 is installed with a rubber plate 406, the top of the rubber plate 406 installed in the second limiting support plate 402 penetrates and connects with an adsorption pipe 411, the adsorption air generated by the dust removal device 2 is delivered to the surface of the filter plate 301 through the rubber plate 406 and the adsorption pipe 411, for adsorption work on the impurities after scraping, the side surface of the top of the hollow plate 405 installed in the second limiting support plate 402 is installed with an air pressure monitor 410, and the inside of the air pressure monitor 410 is installed with a control module.

[0044] The bottom of the rubber plate 406 installed inside the first limiting support plate 401 is connected with a conveying branch pipe 407. The dust removal device 2 generates compressed air to be conveyed to the rubber plate 406 and the conveying branch pipe 407 to be conveyed to the filter holes of the filter plate 301, which is used for the impurity cleaning operation in the filter holes.

[0045] In the embodiment of the application, the specific working process of the part of the application embodiments is as follows: when the filter plate 301 performs the cleaning operation, the two groups of electric lifting columns 408 input electric current to control the two groups of hollow plates 405 to move to the surface of the filter plate 301. One group of rubber plates 406 is in a stretched state, so as to control the conveying branch pipe 407 to move to the filter hole of the filter plate 301. After the two groups of rubber plates 406 move to the specified positions, the two groups of rubber plates 406 and the rubber ring 403 form an isolation space, and the filter plate 301 is located in the middle position of the isolation space. The dust removal device 2 first generates compressed air to be conveyed to the inside of the filter hole through the first Y-shaped pipe 2031, the rubber plate 406 and the conveying branch pipe 407, and performs the wind cleaning operation on the impurities in the filter hole of the filter plate 301. At the same time, the dust removal device 2 generates adsorbed air to be input to the inside of the other group of rubber plates 406 through the second Y-shaped pipe 2041, and input to the surface of the filter plate 301 through the adsorption pipe 411 to perform the adsorption operation on the cleaned impurities. After the cleaning of the filter plate 301 is completed, one group of rubber plates 406 returns to the original position, and the adsorbed air in the other group of rubber plates 406 is continuously conveyed to the outer wall of the filter plate 301 through the adsorption pipe 411, which is beneficial to the continuous cleaning operation on the impurities cleaned on the outer wall of the filter plate 301 on both sides;

[0046] During the movement of the two groups of hollow plates 405, the scraping plate 409 scrapes the outer wall on both sides of the filter plate 301 to perform the scraping cleaning operation on the impurities on the outer wall of the filter plate 301;

[0047] After the first scraping cleaning of the filter plate 301 by the simultaneous cleaning mechanism 4 is completed, the two groups of electric lifting columns 408 input electric current to control the two groups of rubber plates 406 to be attached to the outer wall of the filter plate 301 again. At the same time, the dust removal device 2 inputs compressed air into the isolation space formed by the two groups of rubber plates 406. The air pressure monitor 410 monitors the air pressure data in the isolation space in real time and conveys the air pressure data to the control module. The control module analyzes and judges whether the filter hole of the filter plate 301 is damaged or whether the filter hole of the filter plate 301 and one side are not completely cleaned.

[0048] Reference Figures 1 to 11As shown, the air pressure monitor 410 collects the air pressure data in the isolation space formed by the two sets of rubber plates 406 and transmits it to the control module, which includes a threshold value and a light reminder device. When the filter plate 301 is in normal working condition by manual input of the threshold air pressure data generated by the air pressure monitor 410, the control module compares the real-time air pressure data with the threshold air pressure data. When the real-time air pressure data is greater than the threshold air pressure data, the control module determines that the filter holes of the filter plate 301 and one side are not completely cleaned, and the control module drives the dust removal device 2 and the cleaning mechanism 4 to perform secondary cleaning operation on the filter plate 301.

[0049] When the real-time air pressure data is less than the threshold range, it can be judged that the filter holes or one side of the filter plate 301 are damaged, and the control module reminds the on-site workers to check through the light reminder device.

[0050] The specific workflow of the present application is as follows:

[0051] Step one, the liquid is input into the main body 101 through the input pipeline 104 under the action of the pump, and heat exchange operation is performed. The exchanged liquid is discharged through the output pipeline 103, and the filter mechanism 3 performs impurity filtering operation on the input liquid. The dust removal device 2 generates gas and delivers it to the cleaning mechanism 4, which drives the cleaning mechanism 4 to clean the impurities on the surface of the filter mechanism 3;

[0052] Step two, the filter mechanism 3 surface performs dust cleaning operation, the air pump 205 inputs current to generate compressed air which is delivered to the cleaning mechanism 4 through the first delivery pipe 203 and the first Y-shaped pipe 2031, which assists the cleaning mechanism 4 to clean the impurities on the surface of the filter mechanism 3. The adsorption pump 202 generates adsorption air which is delivered to the cleaning mechanism 4 through the dust removal box 201, the second delivery pipe 204 and the second Y-shaped pipe 2041 to perform adsorption operation on the cleaned impurities, so as to store the cleaned impurities in the dust removal box 201 for later recycling by the workers;

[0053] Step three, when the filter plate 301 is cleaned, the two groups of electric lifting columns 408 input current, control the two groups of hollow plates 405 to move to the surface of the filter plate 301, and one group of rubber plates 406 is in a stretched state, so that the conveying branch pipes 407 move to the filter holes of the filter plate 301, after the two groups of rubber plates 406 move to the specified positions, the two groups of rubber plates 406 and the rubber rings 403 form an isolation space, and the filter plate 301 is located in the middle position of the isolation space, the dust removal device 2 first generates compressed air to be conveyed to the inside of the filter holes through the first Y-shaped pipe 2031, the rubber plate 406 and the conveying branch pipe 407, and the impurities in the filter holes of the filter plate 301 are cleaned by air, at the same time, the dust removal device 2 generates adsorbed air to be input to the inside of the other group of rubber plates 406 through the second Y-shaped pipe 2041, and the adsorbed air is input to the surface of the filter plate 301 through the adsorption pipe 411, so that the impurities after cleaning are adsorbed, after the filter plate 301 is cleaned, one group of rubber plates 406 returns to the original position, and the adsorbed air in the other group of rubber plates 406 is continuously conveyed to the outer wall of the filter plate 301 through the adsorption pipe 411, so that the impurities cleaned on the two sides of the filter plate 301 are continuously cleaned;

[0054] During the movement of the two groups of hollow plates 405, the scraping plate 409 scrapes the outer walls on the two sides of the filter plate 301, and the impurities on the outer walls of the filter plate 301 are scraped and cleaned;

[0055] After the first scraping and cleaning of the filter plate 301 by the simultaneous cleaning mechanism 4, the two groups of electric lifting columns 408 input current, control the two groups of rubber plates 406 to adhere to the outer wall of the filter plate 301 again, at the same time, the dust removal device 2 inputs compressed air into the isolation space formed by the two groups of rubber plates 406, the air pressure monitor 410 monitors the air pressure data in the isolation space in real time and conveys the air pressure data to the control module, and whether the filter holes of the filter plate 301 are damaged or whether the filter holes of the filter plate 301 and one side are not completely cleaned is analyzed and judged by the control module.

[0056] Finally, it should be pointed out that: first, in the description of the present application, it should be pointed out that, unless otherwise specified and limited, the terms "installation", "connection", "connection" should be understood broadly, which can be mechanical connection or electrical connection, or the communication between the two elements, or direct connection, "up", "down", "left", "right" and the like are only used to represent the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change;

[0057] Secondly: the drawings of the disclosed embodiments only relate to the structures involved in the disclosed embodiments, other structures can refer to the usual design, and in the case of no conflict, the same embodiment and different embodiments of the present application can be combined with each other;

[0058] Finally: the above only for the preferred embodiments of the present application, and not for limiting the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, should be included in the scope of protection of the present application.

Claims

1. A high efficient energy saving heat exchanger with easy cleaning comprising a heat exchanger (1) characterized in that: The heat exchanger (1) comprises a main body (101), the bottom of the main body (101) is welded with a support (102), the bottom of the main body (101) is provided with an output pipeline (103) near the support (102), and the top of the main body (101) is provided with an input pipeline (104) near the output pipeline (103); The input pipeline (104) is provided with a dust removal device (2) at the inlet, the inner wall of the input pipeline (104) is provided with a cleaning mechanism (4) near the filtering mechanism (3), the cleaning mechanism (4) is internally provided with the filtering mechanism (3), which is used for liquid impurity filtering operation, the dust removal device (2) generates gas and is delivered to the inside of the cleaning mechanism (4), and the cleaning mechanism (4) is driven to clean the impurities on the surface of the filtering mechanism (3); The filtering mechanism (3) comprises first limiting plates (302), the number of the first limiting plates (302) is two groups, the top of one group of the first limiting plates (302) is provided with a second limiting plate (303), the cleaning mechanism (4) is installed on the side surface of the second limiting plate (303) and the two groups of the first limiting plates (302), the middle position of one group of the first limiting plates (302) is provided with a filter plate (301), and the inner wall of one group of the first limiting plates (302) is provided with a clamping groove matched with the filter plate (301) and used for fixing the filter plate (301) near the filter plate (301); The cleaning mechanism (4) comprises first limiting support plates (401), second limiting support plates (402) and rubber rings (403), the first limiting support plates (401) and the second limiting support plates (402) are installed on the side surface of the filtering mechanism (3) in a vertical parallel state, the inner walls of the first limiting support plates (401) and the second limiting support plates (402) are all provided with electric lifting columns (408), one end of the electric lifting column (408) is provided with a hollow plate (405), the inner wall of the hollow plate (405) movably sleeves a scraping plate (409), the bottom of the scraping plate (409) is provided with a spring, the number of the scraping plates (409) is multiple, and the multiple scraping plates (409) are in a sleeving relationship, and the two sides of the hollow plate (405) are movably sleeved on the inner wall of a sliding rail plate (404); The scraping plates (409) arranged on the inner walls of the first limiting support plates (401) and the second limiting support plates (402) all contact the surface of the filter plate (301), the side surface of the scraping plate (409) is provided with a rubber plate (406), the top of the rubber plate (406) arranged in the second limiting support plate (402) is provided with a suction pipe (411) penetratingly connected, the dust removal device (2) generates suction air and delivers the suction air to the surface of the filter plate (301) through the rubber plate (406) and the suction pipe (411), so that the suction air is used for the adsorption operation of impurities after scraping, and the side surface of the top of the hollow plate (405) arranged in the second limiting support plate (402) is provided with an air pressure monitor (410), and the inside of the air pressure monitor (410) is provided with a control module. The bottom of the rubber plate (406) installed inside the first limiting support plate (401) is connected with a conveying branch pipe (407). The dust removal device (2) generates compressed air to be conveyed to the rubber plate (406) and the conveying branch pipe (407), and then to the filter holes of the filter plate (301), so as to clean the impurities in the filter holes.

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