Self-cleaning efficient impurity removal device

Abstract

The invention relates to the technical field of air purification, and provides a self-cleaning type efficient impurity removal device which comprises a filter box body, a gas pipe set and a flow control valve set. A filter cavity and a gas temporary storage cavity are formed in the filter box body, and the filter cavity communicates with a blow-off pipe; the filter assembly is arranged in the filter cavity and comprises a first air filter, a second air filter and a filter screen, and the filter screen is arranged between the first air filter and the second air filter; the gas pipe set comprises a first gas inlet pipe, a second gas inlet pipe, a first exhaust pipe and a second exhaust pipe, the first gas inlet pipe and the second gas inlet pipe are both communicated with the filter cavity, the first exhaust pipe and the second exhaust pipe are both communicated with the gas temporary storage cavity, and the first exhaust pipe and the second exhaust pipe are both located on the side, close to the first air filter, of the filter screen; the second air inlet pipe and the second exhaust pipe are located on the side, close to the second air filter, of the filter screen. The cleaning simplicity and convenience of the filtering component in the impurity removal device can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of air purification, and in particular to a self-cleaning high-efficiency impurity removal device. Background Art

[0002] In the modern furniture manufacturing industry, in order to ensure the cleanliness of the production environment and the health and safety of workers, removing various impurities generated during the production process has become an indispensable part. These impurities mainly come from sawdust, dust and other fine particles in the wood processing process, which not only affect the production efficiency, but also may cause potential harm to the respiratory system of operators. In order to solve this problem, the industry generally uses impurity removal devices to purify the workshop and ensure the quality of the air.

[0003] Traditionally, the design principle of this type of impurity removal device is relatively simple. It mainly sets up a cylinder with a filter element, uses the strong suction force generated by the exhaust fan to suck in the air containing impurities, and guides it through the filter element. In this process, the filter element can effectively intercept and capture large particles of impurities in the air, such as wood chips, so as to achieve a preliminary purification effect.

[0004] However, this design has obvious limitations - as the use time increases, a large amount of impurities will gradually accumulate on the surface of the filter element. If it is not cleaned or replaced in time, it will not only affect the purification effect, but also cause the equipment to operate in a lower efficiency and even damage key components. However, when cleaning the filter element, this structure needs to remove the filter element from the impurity removal device for cleaning, which is very cumbersome and requires too many manual intervention steps. Summary of the invention

[0005] In order to improve the ease of cleaning of the filter components in the impurity removal device, the present application provides a self-cleaning high-efficiency impurity removal device.

[0006] The present application provides a self-cleaning high-efficiency impurity removal device, which adopts the following technical solution: A self-cleaning high-efficiency impurity removal device, comprising: A filter box body, wherein a filter chamber and a gas temporary storage chamber are arranged in the filter box body, and a sewage discharge pipe is connected to the filter chamber; A filter assembly is arranged in the filter cavity, the filter assembly comprises a first air filter, a second air filter and a filter screen, the filter screen is arranged between the first air filter and the second air filter; one end of the first air filter is connected to the filter cavity, and the other end is connected to the gas temporary storage cavity; one end of the second air filter is connected to the filter cavity, and the other end is connected to the gas temporary storage cavity; A gas pipe group, comprising a first air intake pipe, a second air intake pipe, a first exhaust pipe and a second exhaust pipe, wherein the first air intake pipe and the second air intake pipe are both connected to the filter cavity, the first exhaust pipe and the second exhaust pipe are both connected to the gas temporary storage cavity, the first exhaust pipe and the first exhaust pipe are both located on a side of the filter screen close to the first air filter, and the second air intake pipe and the second exhaust pipe are both located on a side of the filter screen close to the second air filter; The flow control valve group is used to control the connection and disconnection between the first air intake pipe, the second air intake pipe, the first exhaust pipe, the second exhaust pipe and the sewage pipe and the outside world.

[0007] By adopting the above technical solution, the filter chamber and the gas temporary storage chamber in the filter box are separated, so that after the air is double filtered by the filter and the air filter, the impurities in the air can be effectively intercepted and removed, thereby improving the purification effect; when in use, it includes the first filtering state and the second filtering state. In the first filtering state, the flow control valve group controls the second air inlet pipe and the first exhaust pipe in the gas pipe group to be closed, and the gas to be filtered flows into the filter chamber along the first air inlet pipe. After the gas passes through the filter for the first time, it flows to the second air filter for the second time and then flows into the gas temporary storage chamber, and is discharged along the second exhaust pipe. After a period of use, a large amount of impurities accumulate on the filter. In the second filtering state, the second air inlet pipe and the first exhaust pipe are controlled to be opened by the flow control valve group, and the first air inlet pipe and the second exhaust pipe are closed; the gas to be filtered flows into the filter chamber along the second air inlet pipe, and the gas passes through the filter for the first time. After the gas flows to the first air filter for the second time, it flows into the gas temporary storage chamber and is discharged along the first exhaust pipe; when the gas enters the filter, the impurities attached to the filter are back-blown and cleaned, so that the impurities on the filter are separated from the filter, thereby achieving the purpose of self-cleaning. The design of the drain pipe further ensures that impurities that escape from the filter can be discharged in time.

[0008] Optionally, the first exhaust pipe and the second exhaust pipe are both connected to a clean air pipe, and the flow control valve group is also used to control the connection and disconnection between the clean air pipe and the second exhaust pipe.

[0009] By adopting the above technical solution, during the filtration process, the connection between the clean air pipe and the second exhaust pipe can be controlled by the flow control valve group, and gas can be filled into the filter cavity through the clean air pipe. The filled gas can blow the first air filter and the second air filter in reverse direction, effectively removing impurities accumulated on the first air filter and the second air filter, further improving the self-cleaning effect, extending the service life of the filter, and reducing the maintenance frequency.

[0010] Optionally, an inspection port is provided on the inner wall of the filter chamber, and the inspection port can be opened and closed.

[0011] By adopting the above technical solution, the inspection port can be opened and closed, which is convenient for regular inspection and maintenance of the filter assembly, thereby improving the reliability and maintenance convenience of the device.

[0012] Optionally, a first on-off member is provided at the connection point between the first air filter and the temporary gas storage chamber, and the first on-off member is used to control the connection between the first air filter and the temporary gas storage chamber; A second on-off piece is provided at the connection point between the second air filter and the gas temporary storage chamber, and the second on-off piece is used to control the on-off between the first air filter and the gas temporary storage chamber.

[0013] By adopting the above technical solution, in the first filtering state, the first on-off piece is used to disconnect the connection between the first air filter and the temporary gas storage chamber, so that after the gas to be filtered enters the filter chamber along the first air inlet pipe, it must pass through the filter screen and the second air filter before it can flow into the temporary gas storage chamber, which optimizes the filtering effect on the one hand and allows the gas to be concentratedly purged from the filter screen on the other hand, improving the self-cleaning effect of the gas during backblowing. In the second filtering state, the second on-off piece is used to disconnect the connection between the second air filter and the temporary gas storage chamber, so that after the gas to be filtered enters the filter chamber along the second air inlet pipe, it must pass through the filter screen and the first air filter before it can flow into the temporary gas storage chamber.

[0014] Optionally, a partition plate is fixed in the filter box, the partition plate divides the filter box into the filter chamber and the gas temporary storage chamber, the partition plate is provided with a first communication port and a second communication port, the first air filter end is arranged corresponding to the first communication port, and the second air filter end is arranged corresponding to the second communication port; The first on-off member includes a first blocking block and a first lifting source, the first blocking block is located above the first connecting port, and the first lifting source is used to drive the first blocking block to slide, so as to block or open the first connecting port; The second on-off member includes a second blocking block and a second lifting source, the second blocking block is located above the second connecting port, and the second lifting source is used to drive the second blocking block to slide to block or open the second connecting port.

[0015] By adopting the above technical solution, the first connecting port and the second connecting port correspond to the ends of the first air filter and the second air filter respectively; the clear flow path of the gas at different stages is ensured, and the reduction of purification effect caused by airflow chaos is avoided; the sliding of the first blocking block and the second blocking block is controlled by the first lifting source and the second lifting source, and the connection and disconnection between the first air filter and the second air filter and the gas temporary storage chamber are accurately controlled, so that the airflow can be quickly cut off or restored when needed.

[0016] Optionally, a baffle is provided on both sides of the filter screen, one end of the baffle is fixed to the partition plate, and the distance between the baffle and the filter screen gradually increases in the direction away from the partition plate.

[0017] By adopting the above technical solution, the setting of the baffle effectively prevents the impurities on the filter from being directly blown onto the first air filter or the second air filter when the gas in the filter cavity back-blows the filter, thereby affecting the filtering effect of the first air filter and the second air filter. At the same time, the design of gradually increasing the distance between the baffle and the filter allows the impurities on the filter to slide smoothly along the baffle after being blown onto the baffle.

[0018] Optionally, the baffle is provided with air passage holes, and a plurality of the air passage holes are spaced apart in the vertical direction.

[0019] By adopting the above technical solution, the arrangement of the air strip holes can shorten the time for the gas to flow along one side of the filter screen to the first air filter or the second air filter, thereby improving the filtering efficiency.

[0020] Optionally, an inclined baffle is fixed to a side of the baffle close to the filter, a plurality of the inclined baffles are provided, and the inclined baffles are provided in one-to-one correspondence with the air passage holes, and the inclined baffles are inclined relative to the baffle.

[0021] By adopting the above technical solution, the inclined baffles and the air passage holes are arranged one by one, which effectively prevents the accumulation of impurities on the baffles and reduces the blockage of the air passage holes.

[0022] Optionally, a driving component is further included, and the first air filter and the second air filter are both rotatably disposed in the filter cavity, and the driving component is used to drive the first air filter and the second air filter to rotate.

[0023] By adopting the above technical solution, the first air filter and the second air filter can rotate under the action of the driving assembly, so that different side walls of the first air filter can be intermittently placed close to the filter screen, which helps to further evenly distribute the filtration load and improve the filtration efficiency.

[0024] Optionally, the blocking piece is made of elastic material, and a shift bar is fixed on the peripheral side of the first air filter, and a shift bar is also fixed on the peripheral side of the second air filter, and the shift bar is used to shift the blocking piece.

[0025] By adopting the above technical solution, the baffle is made of elastic material, so that the baffle has a certain elasticity and deformation ability; when the driving component drives the first air filter or the second air filter to rotate to change the placement direction of the first air filter or the second air filter, the baffle will be moved by the lever and vibrate, which can shake off the impurities attached to the baffle.

[0026] In summary, the present application includes at least one of the following beneficial effects: 1. The on-off state of the first air inlet pipe, the second air inlet pipe, the first exhaust pipe and the second exhaust pipe is controlled by the flow control valve group, so as to change the flow route of the air in the filter box, so that the impurities accumulated on the filter screen can be swept away during the filtration, and the self-cleaning function is realized, which significantly improves the cleaning simplicity and maintenance efficiency of the filter assembly; 2. The self-cleaning function reduces the need for manual intervention, reduces maintenance costs, extends the service life of the filter components, and ensures long-term stable operation of the equipment; 3. The multi-layer design of the filter component effectively improves the air purification effect, ensures the air quality of the workshop, and protects the health and safety of operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the overall structure of the self-cleaning high-efficiency impurity removal device of Example 1 of the present application; Figure 2 This is a schematic cross-sectional view of the self-cleaning high-efficiency impurity removal device of Example 1 of the present application; Figure 3 It is a schematic cross-sectional structure diagram of the self-cleaning high-efficiency impurity removal device from another perspective of Example 1 of the present application; Figure 4 This is a schematic cross-sectional view of the self-cleaning high-efficiency impurity removal device of Example 2 of the present application; Figure 5 It is a schematic cross-sectional structure diagram of the self-cleaning high-efficiency impurity removal device from another perspective of Example 2 of the present application; Description of reference numerals: 1. filter box; 11. filter chamber; 12. gas temporary storage chamber; 13. sewage hopper; 131. sewage pipe; 14. partition plate; 15. first connecting port; 16. second connecting port; 17. inspection port; 18. cover plate; 2. filter assembly; 21. first air filter; 211. first installation cylinder; 212. first filter element; 22. second air filter; 221. second installation cylinder; 222. second filter element; 23. filter screen; 3. flow control valve group; 31. first air inlet valve; 32. second air inlet valve; 33. The first exhaust valve; 34, the second exhaust valve; 35, the air cut-off valve; 36, the opening and closing valve; 4, the baffle; 41, the air strip hole; 42, the inclined baffle; 5, the driving assembly; 51, the servo motor; 52, the gear set; 6, the first on-off piece; 61, the first blocking block; 62, the first lifting source; 7, the second on-off piece; 71, the second blocking block; 72, the second lifting source; 8, the gas pipe group; 81, the first air inlet pipe; 82, the second air inlet pipe; 83, the first exhaust pipe; 84, the second exhaust pipe; 85, the cleaning air pipe; 9, the shifting strip. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1-5 This application is described in further detail.

[0029] Embodiment 1: Embodiment 1 of the present application provides a self-cleaning high-efficiency impurity removal device.

[0030] refer to Figure 1-Figure 3 The self-cleaning high-efficiency impurity removal device provided in the embodiment of the present application comprises a filter box 1, a filter assembly 2, a gas pipe group 8 and a flow control valve group 3. Among them, the top of the filter box 1 is open, and a cover plate 18 is detachably connected to the opening of the filter box 1. The cover plate 18 can be detachably connected to the top of the filter box 1 through a snap-on or snap-on structure to close the opening of the filter box 1. A partition plate 14 is fixed in the filter box 1, and the partition plate 14 is placed horizontally to divide the filter box 1 into a filter chamber 11 and a gas temporary storage chamber 12, and the filter chamber 11 is located above the gas temporary storage chamber 12. The partition plate 14 is spaced apart with a first connecting port 15 and a second connecting port 16. The filter assembly 2 is arranged in the filter chamber 11, and comprises a first air filter 21, a second air filter 22 and a filter screen 23; the first air filter 21 and the second air filter 22 are suspended, and the filter screen 23 is fixed between the first air filter 21 and the second air filter 22. The first air filter 21 includes a first filter element 212 and a first mounting cylinder 211 fixed at both ends of the first filter element 212. The first filter element 212 is cylindrical. One end of the first mounting cylinder 211 is inserted into the first communication port 15, and the first mounting cylinder 211 is fixedly connected to the inner side wall of the first communication port 15. The second air filter 22 includes a second filter element 222 and a second mounting cylinder 221 fixed at both ends of the second filter element 222. The second filter element 222 is cylindrical. One end of the second mounting cylinder 221 is inserted into the second communication port 16, and the second mounting cylinder 221 is fixedly connected to the inner side wall of the second communication port 16.

[0031] refer to Figure 1-Figure 3 The gas pipe group 8 includes a first air inlet pipe 81, a second air inlet pipe 82, a first exhaust pipe 83 and a second exhaust pipe 84. The first air inlet pipe 81 and the second air inlet pipe 82 are both connected to the filter chamber 11, and the first exhaust pipe 83 and the second exhaust pipe 84 are both connected to the gas temporary storage chamber 12. Among them, the first exhaust pipe 83 and the second exhaust pipe 84 are both located on the side of the filter screen 23 close to the first air filter 21, and the second air inlet pipe 82 and the second exhaust pipe 84 are both located on the side of the filter screen 23 close to the second air filter 22. The first exhaust pipe 83 and the second exhaust pipe 84 are both connected to a clean air pipe 85 at one end close to the filter box 1, and the clean air pipe 85 is used to introduce high-pressure gas.

[0032] refer to Figure 1 and Figure 3The flow control valve group 3 includes a first intake valve 31 installed on the first intake pipe 81, a second intake valve 32 installed on the second intake pipe 82, a first exhaust valve 33 installed on the first exhaust pipe 83, a second exhaust valve 34 installed on the second exhaust pipe 84, and an air cut-off valve 35 installed on the clean air pipe 85.

[0033] The flow control valve group 3 controls the first air inlet pipe 81, the second air inlet pipe 82, the first exhaust pipe 83, the second exhaust pipe 84 and the connection and disconnection with the outside world, thereby changing the flow route of the air in the filter box 1, so that when the gas is filtered, it can be swept away by reverse blowing to remove the impurities accumulated on the filter screen 23, thereby achieving the purpose of self-cleaning.

[0034] In other embodiments, an air intake pipe may be provided, so that the first air intake pipe 81 and the second air intake pipe 82 are both connected to the air intake pipe, and a vacuum pump is installed on the pipe section of the air intake pipe to draw the air with impurities in the workshop into the filter box 1; the blockage condition of the filter 23 can be judged by the suction intensity of the vacuum pump under the same purification demand, and then the opening and closing states of each valve in the flow control valve group 3 can be reasonably adjusted.

[0035] refer to Figure 3 An inspection port 17 is provided on the inner wall of the filter chamber 11. A quick-opening door structure can be used at the inspection port 17 to facilitate quick opening and closing of the inspection port 17 for daily maintenance and inspection.

[0036] refer to Figure 2 The bottom of the filter chamber 11 is connected to a drain hopper 13. In this embodiment, two drain hoppers 13 are specifically provided; one drain hopper 13 is located below the first air filter 21, and the other drain hopper 13 is located below the second air filter 22. The bottoms of the two drain hoppers 13 are both connected to a drain pipe 131, and the flow control valve group 3 further includes an on-off valve 36 installed on the drain pipe 131.

[0037] The implementation principle of this embodiment is as follows: when in use, it includes a first filtering state and a second filtering state. In the first filtering state, the flow control valve group 3 controls the second air inlet pipe 82 and the first exhaust pipe 83 in the gas pipe group 8 to be closed, and the filtered gas flows into the filter chamber 11 along the first air inlet pipe 81. After the gas passes through the filter screen 23 for the first filtration, it flows to the second air filter 22 for the second filtration, and then flows into the gas temporary storage chamber 12 and is discharged along the second exhaust pipe 84. After a period of use, a large amount of impurities accumulate on the filter screen 23. In the second filtering state, the second air inlet pipe 82 and the first exhaust pipe 83 are controlled to be opened through the flow control valve group 3, and the first air inlet pipe 81 and the second exhaust pipe 84 are closed; the gas to be filtered flows into the filter chamber 11 along the second air inlet pipe 82, the gas passes through the filter screen 23 for the first filtration, flows to the first air filter 21 for the second filtration, and then flows into the gas temporary storage chamber 12, and is discharged along the first exhaust pipe 83; when the gas enters the filter screen 23, the impurities attached to the filter screen 23 are back-blown and cleaned, and the impurities on the filter screen 23 are blown down to the bottom of the filter chamber 11 and fall into the sewage bucket 13, and then discharged through the sewage pipe 131. By controlling the alternating operation of the first filtering state and the second filtering state through the flow control valve group 3, it can not only effectively extend the service life of the filter screen 23, but also reduce manual intervention and maintenance costs. When it is necessary to clean the first filter element 212 and the second filter element 222, only the cleaning air pipe 85 is opened through the flow control valve group 3, and the air flows into the gas temporary storage chamber 12 along the cleaning air pipe 85 and then flows into the first filter element 212 and the second filter element 222, so as to realize backblowing of the first filter element 212 and the second filter element 222 to blow off the impurities adhering to the first filter element 212 and the second filter element 222.

[0038] Example 2 The difference between this embodiment and the above embodiment is that: Reference Figure 4 , a first on-off piece 6 and a second on-off piece 7 are added to the gas temporary storage chamber 12. The first on-off piece 6 includes a first blocking block 61 and a first lifting source 62. The first blocking block 61 is located above the first connecting port 15. The first lifting source 62 drives the first blocking block 61 to slide to block or open the first connecting port 15. The second on-off piece 7 includes a second blocking block 71 and a second lifting source 72. The second blocking block 71 is located above the second connecting port 16. The second lifting source 72 drives the second blocking block 71 to slide to block or open the second connecting port 16. The first blocking block 61 and the second blocking block 71 can be made of rubber material, the first lifting source 62 and the second lifting source 72 are electric push rods, and one end of the first lifting source 62 and the second lifting source 72 are fixedly connected to the cover plate 18.

[0039] Reference Figure 4, a baffle 4 is provided on both sides of the filter 23, one end of the baffle 4 is fixedly connected to the partition plate 14; the baffle 4 is made of elastic material, and the distance between the baffle 4 and the filter 23 gradually increases in the direction away from the partition plate 14. The baffle 4 is provided with air-passing holes 41, and a plurality of air-passing holes 41 are provided at intervals along the vertical direction; the baffle 4 is also fixed with an inclined baffle 42 on the side close to the filter 23, and a plurality of inclined baffles 42 are provided, and the inclined baffles 42 are provided in a one-to-one correspondence with the air-passing holes 41, and the inclined baffles 42 are inclined relative to the baffle 4.

[0040] Reference Figure 4 and Figure 5 , one end of the first mounting cylinder 211 located in the first communication port 15 is rotatably connected to the partition plate 14 through a bearing, and one end of the second mounting cylinder 221 located in the second communication port 16 is also rotatably connected to the partition plate 14 through a bearing. A driving assembly 5 is provided in the filter chamber 11, and the driving assembly 5 is specifically provided with two groups, and the first air filter 21 and the second air filter 22 correspond to one group of driving assemblies 5 respectively. The driving assembly 5 includes a servo motor 51 and a gear set 52. On the inner wall of the filter chamber 11, the gear set 52 is used to transmit the power of the motor so that the first air filter 21 and the second air filter 22 rotate synchronously.

[0041] Reference Figure 5 A first mounting tube 211 at the bottom of the first air filter 21 is fixed with a lever 9, and a plurality of levers 9 are arranged at intervals around the first air filter 21; a second mounting tube 221 at the bottom of the second air filter 22 is also fixed with a lever 9, and a plurality of levers 9 are arranged at intervals around the second air filter 22. In this embodiment, two levers 9 are arranged on each of the first air filter 21 and the second air filter 22. After the drive assembly 5 is started, the lever 9 is used to move the baffle 4. The baffle 4 can vibrate under the action of the lever 9 to shake off impurities attached to the baffle 4.

[0042] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A self-cleaning high-efficiency impurity removal device, characterized in that: include: A filter box (1), wherein a filter chamber (11) and a gas temporary storage chamber (12) are provided in the filter box (1), and a sewage discharge pipe (131) is connected to the filter chamber (11); A filter assembly (2) is arranged in the filter chamber (11), the filter assembly (2) comprising a first air filter (21), a second air filter (22) and a filter screen (23), the filter screen (23) being arranged between the first air filter (21) and the second air filter (22); one end of the first air filter (21) is in communication with the filter chamber (11), and the other end is in communication with the gas temporary storage chamber (12); one end of the second air filter (22) is in communication with the filter chamber (11), and the other end is in communication with the gas temporary storage chamber (12); A gas pipe group (8), comprising a first air intake pipe (81), a second air intake pipe (82), a first exhaust pipe (83) and a second exhaust pipe (84); the first air intake pipe (81) and the second air intake pipe (82) are both connected to the filter chamber (11); the first exhaust pipe (83) and the second exhaust pipe (84) are both connected to the gas temporary storage chamber (12); the first exhaust pipe (83) and the first exhaust pipe (83) are both located on a side of the filter screen (23) close to the first air filter (21); the second air intake pipe (82) and the second exhaust pipe (84) are both located on a side of the filter screen (23) close to the second air filter (22); A flow control valve group (3), the flow control valve group (3) is used to control the connection and disconnection between the first air intake pipe (81), the second air intake pipe (82), the first exhaust pipe (83), the second exhaust pipe (84) and the sewage pipe (131) and the outside world.

2. A self-cleaning high-efficiency impurity removal device according to claim 1, characterized in that: The first exhaust pipe (83) and the second exhaust pipe (84) are both connected to a clean air pipe (85), and the flow control valve group (3) is also used to control the connection and disconnection between the clean air pipe (85) and the second exhaust pipe (84).

3. A self-cleaning high-efficiency impurity removal device according to claim 2, characterized in that: An inspection opening (17) is also provided on the inner wall of the filter cavity (11), and the inspection opening (17) can be opened and closed.

4. A self-cleaning high-efficiency impurity removal device according to claim 3, characterized in that: A first on-off member (6) is provided at the connection point between the first air filter (21) and the temporary gas storage chamber (12), and the first on-off member (6) is used to control the connection between the first air filter (21) and the temporary gas storage chamber (12); A second on-off member (7) is provided at the connection point between the second air filter (22) and the temporary gas storage chamber (12), and the second on-off member (7) is used to control the on-off between the first air filter (21) and the temporary gas storage chamber (12).

5. A self-cleaning high-efficiency impurity removal device according to claim 4, characterized in that: A partition plate (14) is fixed inside the filter box (1), and the partition plate (14) divides the filter box (1) into the filter chamber (11) and the gas temporary storage chamber (12); a first communication port (15) and a second communication port (16) are provided on the partition plate (14); an end of the first air filter (21) is arranged corresponding to the first communication port (15), and an end of the second air filter (22) is arranged corresponding to the second communication port (16); The first on-off member (6) comprises a first blocking block (61) and a first lifting source (62), wherein the first blocking block (61) is located above the first communication port (15), and the first lifting source (62) is used to drive the first blocking block (61) to slide, so as to block or open the first communication port (15); The second on-off member (7) comprises a second blocking block (71) and a second lifting source (72); the second blocking block (71) is located above the second connecting port (16); the second lifting source (72) is used to drive the second blocking block (71) to slide, so as to block or open the second connecting port (16).

6. A self-cleaning high-efficiency impurity removal device according to claim 5, characterized in that: A baffle (4) is provided on both sides of the filter screen (23); one end of the baffle (4) is fixed to the partition plate (14); and the distance between the baffle (4) and the filter screen (23) gradually increases in a direction away from the partition plate (14).

7. A self-cleaning high-efficiency impurity removal device according to claim 6, characterized in that: The baffle (4) is provided with air passage holes (41), and a plurality of the air passage holes (41) are arranged at intervals along the vertical direction.

8. A self-cleaning high-efficiency impurity removal device according to claim 7, characterized in that: An inclined baffle (42) is also fixed to a side of the baffle (4) close to the filter screen (23); a plurality of inclined baffles (42) are provided, and the inclined baffles (42) are provided in a one-to-one correspondence with the air passage holes (41); and the inclined baffles (42) are inclined relative to the baffle (4).

9. A self-cleaning high-efficiency impurity removal device according to claim 6, characterized in that: It also comprises a driving assembly (5), wherein the first air filter (21) and the second air filter (22) are both rotatably disposed in the filter cavity (11), and the driving assembly (5) is used to drive the first air filter (21) and the second air filter (22) to rotate.

10. A self-cleaning high-efficiency impurity removal device according to claim 9, characterized in that: The baffle (4) is made of an elastic material, and a lever (9) is fixed on the circumference of the first air filter (21), and a lever (9) is also fixed on the circumference of the second air filter (22), wherein the lever (9) is used to move the baffle (4).

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