An online flushing self-cleaning filtering device

Abstract

The present invention relates to the technical field of filtering equipment, and in particular to an online flushing self-cleaning filtering equipment. Its technical solution includes a filter body, a flushing pipeline, a filter assembly and a brush rack. The filter assembly and the brush rack are both arranged in the filter body. The filter assembly can be rotatably installed at the axis of the filter body and can move along the axis direction of the filter body; the brush rack is arranged on the outside of the filter assembly and at least a part of it is in contact with the surface of the filter assembly. At least a part of the flushing pipeline is arranged in the filter body for driving the filter assembly to rotate and flush the filter assembly at the same time. The flushing pipeline allows the filter assembly to rotate and move vertically in the filter body for a certain distance, and further allows the filter assembly to rotate and move along the axis direction of the filter body, which can effectively clean the filter assembly dynamically and avoid the generation of cleaning dead corners. At the same time, it is convenient to clean the dirt on the surface of the filter assembly in cooperation with the brush rack.

Description

Technical Field

[0001] The invention relates to the technical field of filtering equipment, and in particular to an online flushing self-cleaning filtering equipment. Background Art

[0002] When the filter is in use, the internal filter element will continuously filter out impurities in the gas. After using it for a period of time, in order for the internal filter element to work normally, the filter needs to be disassembled, the internal filter element removed and cleaned, and then installed and used again.

[0003] At present, patent application publication number CN220424688U discloses a self-cleaning filter, which includes a housing, a filter cartridge, a collection cartridge, a scraper device and a power part. The housing is provided with an emulsion inlet and a filtrate outlet; the filter cartridge is fixedly arranged inside the housing, the top outer wall of the filter cartridge is sealed with the top inner wall of the housing, the bottom outer wall of the filter cartridge is sealed with the bottom inner wall of the housing, the emulsion inlet is located above the filter cartridge, the filtrate outlet is located on one side of the filter cartridge, the emulsion is injected into the filter cartridge from the emulsion inlet, and the emulsion filtered by the filter cartridge is discharged from the filtrate outlet; the collection cartridge is fixedly arranged at the bottom of the housing, and the collection cartridge is used to collect filter residues; the scraper device is movably arranged inside the filter cartridge, and the scraper device is used to scrape off impurities adhering to the inner wall of the filter cartridge. The above scheme cleans the filter element by a scraper, but in this process, the filter element is in a static state and cannot effectively cooperate with the scraper for cleaning, and there is a cleaning dead corner. Summary of the invention

[0004] The problem solved by the invention is: how to effectively realize the self-cleaning of the filter element.

[0005] The technical solution of the present invention is as follows: an online flushing self-cleaning filtering device, comprising a filter body, a flushing pipeline, a filter assembly and a brush rack, wherein the filter assembly and the brush rack are both arranged in the filter body, and the filter assembly can be rotatably installed at the axis of the filter body and can be moved along the axis direction of the filter body; the brush rack is arranged on the outside of the filter assembly and at least a part of it is in contact with the surface of the filter assembly, and at least a part of the flushing pipeline is arranged in the filter body for driving the filter assembly to rotate and flushing the filter assembly at the same time.

[0006] Optionally, the filter body comprises a filter housing, a cover, a filter inlet and a filter outlet, the cover is fixed to the upper side of the filter housing, the filter inlet is arranged at the top of the cover for inputting the fluid to be filtered into the filter housing, the filter outlet is installed at the bottom of the filter housing for outputting the fluid to be filtered, and the filter housing is provided with a filter outlet at the bottom that is connected to the filter outlet;

[0007] An elastic buffer structure is arranged at the bottom center of the filter housing, and the elastic buffer structure is used for positioning and installing the filter assembly.

[0008] Optionally, the filter assembly comprises a filter element, a butt joint tube and two cover plates, the filter element is arranged between the two cover plates, the butt joint tube is installed on the surface of the cover plates, and at least a part of the butt joint tube extends into the filter inlet and butts with the inner wall of the filter inlet;

[0009] The surface of the cover plate with the butt-jointed pipe is provided with a force-bearing cover, and the force-bearing cover is circumferentially distributed on the surface of the cover plate, and the cover plate is used to cooperate with the flushing pipeline to drive the filter element to rotate;

[0010] The bottom of the other cover plate has a guide sleeve extending into the filter element, and the guide sleeve is used to cooperate with the elastic buffer structure.

[0011] Optionally, the elastic buffer structure comprises a guide tube, a sealing sleeve, a support sleeve and a spring, the guide tube is fixed at the bottom center of the filter housing, and at least a portion of the filter housing passes through the guide sleeve and extends into the filter element;

[0012] The sealing sleeve is fixed to the inner bottom of the filter housing and is coaxially arranged with the guide tube. The supporting sleeve is arranged on the outer side of the sealing sleeve and has an overlapping portion with the sealing sleeve. The spring is arranged in the area between the sealing sleeve and the guide tube and contacts the supporting sleeve. The supporting sleeve is used to support the cover plate.

[0013] Optionally, a third ball array is provided at the contact position between the guide sleeve and the guide tube, a second ball array is provided between the support sleeve and the cover plate, and a first ball array is provided at the contact position between the docking tube and the filter inlet.

[0014] Optionally, the flushing pipeline includes a first annular tube, a second annular tube, a first high-pressure nozzle and a second high-pressure nozzle, the first annular tube and the second annular tube are both sleeved on the outside of the first ball array, the first high-pressure nozzle is installed on the first annular tube and the first annular tube faces the corresponding force-bearing cover; the second high-pressure nozzle is installed on the second annular tube and the second high-pressure nozzle faces the surface of the filter element;

[0015] The first annular tube is connected to the second annular tube via a connecting pipe. The first annular tube is also provided with a liquid inlet pipe, which extends to the outside of the filter body.

[0016] Optionally, a plurality of the first high-pressure nozzle and the second high-pressure nozzle are provided, and the plurality of the first high-pressure nozzles and the second high-pressure nozzles are arranged at an angle, and the plurality of the first high-pressure nozzles correspond one-to-one to the force-bearing cover, and are used to impact the force-bearing cover to rotate the filter element.

[0017] Optionally, the inclination angle of the first high-pressure nozzle is 30° to 60°, and the inclination angle of the second high-pressure nozzle is 5° to 10°.

[0018] Optionally, a docking position is provided inside the filter inlet, the docking tube matches the inner diameter of the docking position, and the docking tube can move linearly along the docking position.

[0019] Optionally, the brush rack includes a brush rack and bristles, the bristles are arranged on the inner surface of the brush rack, and the bristles are in contact with the filter element.

[0020] Compared with the prior art, the online flushing self-cleaning filter device of the present invention has the following beneficial technical effects:

[0021] Through the movable setting of the filter component, under the driving action of the flushing pipeline, the filter component can rotate and move vertically a certain distance in the filter body, and further the filter component can rotate and move along the axial direction of the filter body. Combined with the flushing action of the flushing pipeline, the filter component can be effectively cleaned dynamically to avoid cleaning dead corners. At the same time, the brush rack can be used to clean the dirt on the surface of the filter component to restore the filtering function of the filter component. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of an online flushing self-cleaning filtering device in an embodiment of the present invention;

[0023] Figure 2 It is a front cross-sectional view of an online flushing self-cleaning filtering device in an embodiment of the present invention;

[0024] Figure 3 A top view of an online flushing self-cleaning filter device in an embodiment of the present invention;

[0025] Figure 4 for Figure 2 A partial enlarged view of the middle part;

[0026] Figure 5 for Figure 2 A partial enlarged view of point B in the middle;

[0027] Figure 6 This is a schematic structural diagram of a filter assembly from a first viewing angle in an embodiment of the present invention;

[0028] Figure 7is a structural schematic diagram of a filter assembly from a second viewing angle in an embodiment of the present invention;

[0029] Figure 8 It is a structural schematic diagram of a brush holder in an embodiment of the present invention;

[0030] Reference numerals:

[0031] 10. Filter body; 11. Filter inlet; 12. Cover body; 121. First ball array; 13. Filter housing; 14. Filter outlet; 15. Filter outlet; 16. Guide tube; 17. Support sleeve; 18. Spring; 19. Sealing sleeve; 20. Flushing pipeline; 21. Liquid inlet pipe; 22. First annular pipe; 23. First high-pressure nozzle; 24. Connecting pipeline; 25. Second annular pipe; 26. Second high-pressure nozzle; 30. Filter assembly; 31. Butt joint pipe; 32. Force cover; 33. Cover plate; 34. Filter element; 35. Guide sleeve; 36. Third ball array; 40. Brush rack; 41. Bristles; 42. Brush rack. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0033] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In the description of this specification, the description with reference to the terms "embodiment", "one embodiment" and "one implementation" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or implementation are included in at least one embodiment or implementation of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or implementation. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or implementations in a suitable manner.

[0036] like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, an online flushing self-cleaning filtering device proposed by the present invention includes a filter body 10, a flushing pipeline 20, a filter assembly 30 and a brush rack 40, wherein the filter assembly 30 and the brush rack 40 are both arranged in the filter body 10, and the filter assembly 30 is rotatably installed at the axis of the filter body 10 and can move along the axis direction of the filter body 10; the brush rack 40 is arranged on the outside of the filter assembly 30 and at least a part of it is in contact with the surface of the filter assembly 30, and at least a part of the flushing pipeline 20 is arranged in the filter body 10 for driving the filter assembly 30 to rotate and flush the filter assembly 30 at the same time.

[0037] Specifically, by making the filter assembly 30 movable, under the driving action of the flushing pipe 20, the filter assembly 30 can rotate and move vertically a certain distance in the filter body 10, and further enable the filter assembly 30 to rotate and move along the axial direction of the filter body 10. In combination with the flushing action of the flushing pipe 20, the filter assembly 30 can be effectively and dynamically cleaned to avoid the generation of cleaning dead corners. At the same time, in combination with the brush rack 40, the dirt on the surface of the filter assembly 30 can be cleaned conveniently to restore the filtering function of the filter assembly 30.

[0038] In this embodiment, the filter body 10 includes a filter housing 13, a cover 12, a filter inlet 11 and a filter outlet 14. The cover 12 is fixed to the upper side of the filter housing 13. The filter inlet 11 is arranged at the top of the cover 12 for inputting the fluid to be filtered into the filter housing 13. The filter outlet 14 is installed at the bottom of the filter housing 13 for outputting the fluid to be filtered. The bottom of the filter housing 13 is provided with a filter outlet 15 connected with the filter outlet 14.

[0039] It should be noted that Figure 2 The arrow direction shown in the figure schematically shows the direction of fluid flow. In this embodiment, the fluid includes gas and liquid to be filtered, such as sewage and flue gas.

[0040] The fluid to be filtered is input into the filter assembly 30 through the filter inlet 11, and enters the filter housing 13 after being filtered by the filter assembly 30. Impurities in the fluid to be filtered penetrate and adhere to the surface of the filter assembly 30. The filtered fluid flows through the filter outlet 15 to the filter outlet 14 and is then collected and discharged, thereby completing the filtering process.

[0041] It should be further explained that during the installation of the filter assembly 30, since the flushing pipeline 20 is arranged on the cover body 12, when the cover body 12 is removed, the flushing pipeline 20 is also removed at the same time, and the filter assembly 30 can be pulled out of the brush rack 40, thereby realizing the disassembly and assembly of the filter assembly 30.

[0042] Combination Figure 2 and Figure 4 As shown, further, an elastic buffer structure is provided at the bottom center of the filter housing 13 , and the elastic buffer structure is used for positioning and installing the filter assembly 30 .

[0043] The bottom of the filter assembly 30 is installed on an elastic buffer structure, which can enable the filter assembly 30 to move along the elastic buffer structure on the one hand, and on the other hand, enable the filter assembly 30 to move to a certain extent in the height direction, so that the filter assembly 30 can maintain a certain state during the filtration process and can reciprocate, telescope and rotate in the cleaning state.

[0044] Combination Figure 6 and Figure 7 As shown, the filter assembly 30 includes a filter element 34, a butt joint tube 31 and two cover plates 33, the filter element 34 is disposed between the two cover plates 33, the butt joint tube 31 is mounted on the surface of the cover plates 33, and at least a portion of the butt joint tube 31 extends into the filter inlet 11 and butts against the inner wall of the filter inlet 11;

[0045] Specifically, a docking position is provided inside the filter inlet 11 , the docking pipe 31 matches the inner diameter of the docking position, and the docking pipe 31 can move linearly along the docking position.

[0046] It should be noted that the docking tube 31 can move a certain distance in the installation position, and the docking tube 31 fits against the inner wall of the comparison position so that the fluid to be filtered can enter the filter element 34 through the docking tube 31, and the setting of the docking position provides space for the movement of the filter assembly 30, so that the filter assembly 30 can reciprocate in the vertical direction while rotating in the filter body 10.

[0047] It should be further explained that the filter element 34 can be replaced according to the different fluids to be filtered. For example, when filtering air, the filter element 34 can adopt a self-cleaning air filter cartridge, whose surface has evenly distributed folds. Dust in the air will adhere to the surface of the filter cartridge, which is conducive to flushing from the outside.

[0048] The surface of the cover plate 33 with the butt joint 31 is provided with a force-bearing cover 32, and the force-bearing cover 32 is circumferentially distributed on the surface of the cover plate 33. The cover plate 33 is used to cooperate with the flushing pipeline 20 to drive the filter element 34 to rotate;

[0049] In this embodiment, the flushing pipeline 20 can generate a jet toward the force-bearing cover 32 to rotate the filter assembly 30 as a whole to achieve a dynamic cleaning effect. The specific process is described in detail below.

[0050] The bottom of the other cover plate 33 has a guide sleeve 35 extending into the filter element 34 , and the guide sleeve 35 is used to cooperate with the elastic buffer structure.

[0051] The guide sleeve 35 is sleeved on the elastic buffer structure, and the guide sleeve 35 enables the filter assembly 30 to move along the elastic buffer structure as a whole and be guided by the elastic buffer structure. At the same time, during the installation process, due to the setting of the guide sleeve 35 and the elastic buffer structure, it is convenient to install and position the filter assembly 30. During the flushing process, the elastic buffer structure can make the filter assembly 30 shake in the vertical direction to a certain extent, so that the filter assembly 30 can be flushed more fully.

[0052] Specifically, the elastic buffer structure includes a guide tube 16, a sealing sleeve 19, a support sleeve 17 and a spring 18. The guide tube 16 is fixed at the bottom center of the filter housing 13, and at least a portion of the filter housing 13 passes through the guide sleeve 35 and extends into the filter element 34.

[0053] The sealing sleeve 19 is fixed to the inner bottom of the filter housing 13 and is coaxially arranged with the guide tube 16. The support sleeve 17 is sleeved on the outer side of the sealing sleeve 19 and has an overlapping portion with the sealing sleeve 19. The spring 18 is arranged in the area between the sealing sleeve 19 and the guide tube 16 and contacts the support sleeve 17. The support sleeve 17 is used to support the cover plate 33.

[0054] In this embodiment, the movement of the filter assembly 30 is guided by inserting the guide tube 16 into the guide sleeve 35, and the filter assembly 30 is supported by the support sleeve 17, so as to facilitate the installation of the filter assembly 30. At the same time, the filter assembly 30 can be vertically moved to a certain extent (under force) by the setting of the spring 18. Therefore, on the one hand, the filter assembly 30 can be positioned and guided, and on the other hand, the filter assembly 30 can be vertically moved under force.

[0055] Furthermore, in this embodiment, a third ball array 36 is provided at the contact position between the guide sleeve 35 and the guide tube 16, a second ball array is provided between the support sleeve 17 and the cover plate 33, and a first ball array 121 is provided at the contact position between the butt joint tube 31 and the filter inlet 11. The provision of the third ball array 36 and the first ball array 121 enables the filter assembly 30 to rotate more smoothly under the action of the flushing pipeline 20, so as to reduce the resistance of the filter assembly 30 when rotating. Through the provision of the second ball array, the elastic buffer structure and the bottom cover plate 33 are converted from sliding friction to rotational friction, so that the filter assembly 30 rotates more smoothly, which is further conducive to flushing the filter element 34.

[0056] In this embodiment, the flushing pipeline 20 includes a first annular tube 22, a second annular tube 25, a first high-pressure nozzle 23 and a second high-pressure nozzle 26. The first annular tube 22 and the second annular tube 25 are both sleeved on the outside of the first ball array 121. The first high-pressure nozzle 23 is installed on the first annular tube 22 and the first annular tube 22 faces the corresponding force-bearing cover 32; the second high-pressure nozzle 26 is installed on the second annular tube 25 and the second high-pressure nozzle 26 faces the surface of the filter element 34;

[0057] The first annular tube 22 is connected to the second annular tube 25 via a connecting pipe 24 . A liquid inlet pipe 21 is further provided on the first annular tube 22 . The liquid inlet pipe 21 extends to the outside of the filter body 10 .

[0058] There are multiple first high-pressure nozzles 23 and multiple second high-pressure nozzles 26, and the multiple first high-pressure nozzles 23 and the second high-pressure nozzles 26 are all tilted. The multiple first high-pressure nozzles 23 correspond one-to-one to the force-bearing cover 32, and are used to impact the force-bearing cover 32 to make the filter element 34 rotate.

[0059] It is connected to an external water supply device, such as a water pump, through the liquid inlet pipe 21. Liquid is pumped into the first annular tube 22 through the water supply device and the liquid inlet pipe 21, and then liquid is supplied into the second annular tube 25 through the connecting pipe 24. The liquid in the first annular tube 22 is sprayed toward the force-bearing cover 32 through the first high-pressure nozzle 23, so that the force-bearing cover 32 is forced to rotate, and under the action of the first ball array 121, the second ball array and the third ball array 36, the filter assembly 30 rotates more smoothly. The liquid in the second annular tube 25 is sprayed toward the filter element 34 of the filter assembly 30 through the second high-pressure nozzle 26, so that the filter element 34 can be fully flushed during the rotation process.

[0060] Optionally, the inclination angle of the first high-pressure nozzle 23 is 30° to 60°, and the inclination angle of the second high-pressure nozzle 26 is 5° to 10°.

[0061] Since the filter assembly 30 needs to be driven to rotate, taking the inclination angle of the first high-pressure nozzle 23 as 45° and the inclination angle of the second high-pressure nozzle 26 as 5° as an example, the inclined setting of the first high-pressure nozzle 23, on the one hand, makes the force-bearing cover 32 more fully stressed, and on the other hand, it is not only used to drive the filter assembly 30 to rotate, but also applies downward pressure to the filter assembly 30. For example, the first high-pressure nozzle 23 intermittently impacts the force-bearing cover 32 in the form of a jet, so that the filter assembly 30 rotates as a whole, and the filter assembly 30 can be moved downward, and the filter assembly 30 can be reset under the action of the spring 18 during the gap of stopping the jet, so that the filter assembly 30 can be flushed more fully. Secondly, through the setting of the second high-pressure nozzle 26, the dirt on the surface of the filter element 34 can be flushed, and the flushing of the second high-pressure nozzle 26 can be more sufficient in conjunction with the rotation of the filter assembly 30.

[0062] It should be noted that the inclination angle of the second high-pressure nozzle 26 can be different but within the range of 5° to 10°. Due to the different inclination angles, the corresponding second high-pressure nozzle 26 acts on the surface of the filter element 34 at different positions, so the filter element 34 can be fully flushed.

[0063] like Figure 8 As shown, the brush rack 40 includes a brush rack 42 and bristles 41, and the bristles 41 are arranged on the inner surface of the brush rack 42, and the bristles 41 are in contact with the filter element 34. By arranging the bristles 41 and the brush rack 42, the filter element 34 is in continuous contact with the bristles 41 during the rotation of the filter assembly 30, and the flushing effect of the flushing pipeline 20 is cooperated to improve the cleaning effect of the filter assembly 30.

[0064] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. An online flushing self-cleaning filtering device, characterized in that: The invention comprises a filter body, a flushing pipeline, a filter assembly and a brushing frame, wherein the filter assembly and the brushing frame are both arranged in the filter body, the filter assembly is rotatably mounted on the axis of the filter body and can move along the axis direction of the filter body; the brushing frame is arranged on the outside of the filter assembly and at least a part of it contacts the surface of the filter assembly, and at least a part of the flushing pipeline is arranged in the filter body for driving the filter assembly to rotate and flush the filter assembly at the same time; The filter body comprises a filter housing, a cover body, a filter inlet and a filter outlet, wherein the cover body is fixed to the upper side of the filter housing, the filter inlet is arranged at the top of the cover body for inputting the fluid to be filtered into the filter housing, the filter outlet is installed at the bottom of the filter housing for outputting the fluid to be filtered, and the filter outlet connected to the filter outlet is arranged at the bottom of the filter housing; an elastic buffer structure is arranged at the bottom center of the filter housing, and the elastic buffer structure is used for positioning and installing the filter assembly; The filter assembly comprises a filter element, a butt joint tube and two cover plates, the filter element is arranged between the two cover plates, the butt joint tube is installed on the surface of the cover plates, and at least a part of the butt joint tube extends into the filter inlet and butts with the inner wall of the filter inlet; The surface of the cover plate with the butt-jointed tube is provided with a force-bearing cover, which is circumferentially distributed on the surface of the cover plate, and the cover plate is used to cooperate with the flushing pipeline to drive the filter element to rotate; the bottom of the other cover plate is provided with a guide sleeve extending into the filter element, and the guide sleeve is used to cooperate with the elastic buffer structure; The elastic buffer structure includes a guide tube, a sealing sleeve, a support sleeve and a spring. The guide tube is fixed at the bottom center of the filter housing, and at least a part of the filter housing passes through the guide sleeve and extends into the filter element. The sealing sleeve is fixed to the inner bottom of the filter housing and is coaxially arranged with the guide tube. The support sleeve is sleeved on the outer side of the sealing sleeve and has an overlapping part with the sealing sleeve. The spring is arranged in the area between the sealing sleeve and the guide tube and contacts the support sleeve. The support sleeve is used to support the cover plate. A third ball array is provided at the contact position between the guide sleeve and the guide tube, a second ball array is provided between the support sleeve and the cover plate, and a first ball array is provided at the contact position between the butt joint tube and the filter inlet; The flushing pipeline includes a first annular tube, a second annular tube, a first high-pressure nozzle and a second high-pressure nozzle. The first annular tube and the second annular tube are both sleeved on the outside of the first ball array. The first high-pressure nozzle is installed on the first annular tube and the first annular tube faces the corresponding force-bearing cover; the second high-pressure nozzle is installed on the second annular tube and the second high-pressure nozzle faces the surface of the filter element; the first annular tube is connected to the second annular tube through a connecting pipeline, and a liquid inlet pipe is also provided on the first annular tube, and the liquid inlet pipe extends to the outside of the filter body; There are multiple first high-pressure nozzles and multiple second high-pressure nozzles, and the multiple first high-pressure nozzles and multiple second high-pressure nozzles are all inclined. The multiple first high-pressure nozzles correspond to the force-bearing cover one by one, and are used to impact the force-bearing cover to make the filter element rotate.

2. The online flushing self-cleaning filtering device according to claim 1, characterized in that: The inclination angle of the first high-pressure nozzle is 30° to 60°, and the inclination angle of the second high-pressure nozzle is 5° to 10°.

3. An online flushing self-cleaning filtering device according to claim 1 or 2, characterized in that: A docking position is arranged inside the filter inlet, the docking pipe matches the inner diameter of the docking position, and the docking pipe can move linearly along the docking position.

4. The online flushing self-cleaning filtering device according to claim 1, characterized in that: The brush rack comprises a brush rack and bristles, wherein the bristles are arranged on the inner surface of the brush rack and the bristles are in contact with the filter element.

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