Automatic cleaning pipeline filter

Abstract

The utility model relates to an automatic cleaning pipeline filter which comprises a driving system, a sealing cover assembly, a pressure difference detection system, a tank body assembly, a reverse cleaning emptying mechanism, a control box, a rotary brush mechanism, a filter screen assembly and a positioning mechanism, the filter screen assembly is arranged in the tank body assembly and comprises a cylindrical filter screen; the rotary brush mechanism is arranged on the inner side of the filter screen and can rotate around the axis of the filter screen, the driving system and the positioning mechanism are oppositely arranged, one end of the rotary brush mechanism is connected with the driving system, and the other end is connected with the positioning mechanism; the pressure difference detection system is used for detecting the pressure difference between the inner side and the outer side of the filter screen; and the control box is electrically connected with the driving system, the pressure difference detection system and the backwashing emptying mechanism respectively. The automatic cleaning pipeline filter can prevent the filter screen and the rotary brush mechanism from being abraded, and can realize automatic cleaning.

Description

Technical Field

[0001] The utility model relates to the technical field of filters, in particular to an automatic cleaning pipeline filter. Background Art

[0002] In the sewage treatment industry, backwash water is essentially recycled water. Filters are primarily designed to filter backwash water used in sewage treatment equipment, ensuring that the recycled water meets the requirements of various equipment. Currently, the most common pipe filters on the market include Y-type filters, laminated disc filters, and integrated pipe filters. These commonly suffer from various issues, including low water flow, easy clogging, difficulty in assembly and repair, high maintenance costs, and difficulty maintaining the concentricity of the filter screen and the rotary brush mechanism, which can lead to wear and tear of the filter screen and rotary brush mechanism. Utility Model Content

[0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide an automatic cleaning pipe filter, which can avoid wear of the filter screen and the rotary brush mechanism and achieve automatic cleaning.

[0004] To achieve the purpose of the utility model, the utility model provides an automatic cleaning pipeline filter, including a drive system, a sealing cover assembly, a pressure difference detection system, a tank assembly, a backwash emptying mechanism, a control box, a rotary brush mechanism, a filter screen assembly and a positioning mechanism;

[0005] The sealing cover assembly is connected to the tank assembly;

[0006] The filter screen assembly is arranged in the tank assembly, the filter screen assembly includes a cylindrical filter screen, and the tank assembly includes a water inlet connected to the inner side of the filter screen and a water outlet connected to the outer side of the filter screen;

[0007] The rotating brush mechanism is provided on the inner side of the filter screen and can rotate around the axis of the filter screen, the driving system is provided on the sealing cover assembly or the tank assembly, the positioning mechanism is provided on the sealing cover assembly or the tank assembly or the filter screen assembly, the driving system and the positioning mechanism are arranged opposite to each other, one end of the rotating brush mechanism is connected to the driving system and the other end is connected to the positioning mechanism;

[0008] The backwashing and emptying mechanism is connected to the inner side of the filter screen;

[0009] The pressure difference detection system is used to detect the pressure difference between the inner side of the filter screen and the outer side of the filter screen;

[0010] The control box is electrically connected to the driving system, the pressure difference detection system, and the backwashing and emptying mechanism respectively.

[0011] In some embodiments of the present invention, the rotary brush mechanism includes a rotary brush main shaft, a fixed plate, a brush mounting positioning plate, a brush, a rotary brush main shaft positioning plate and a rotary brush main shaft centering sleeve, the first end of the rotary brush main shaft is connected to the drive system, the fixed plate is connected to the circumferential surface of the rotary brush main shaft, the brush mounting positioning plate is connected to the fixed plate, the brush is arranged on the brush mounting positioning plate, the brush main shaft positioning plate is arranged on the second end of the rotary brush main shaft positioning plate, and the rotary brush main shaft centering sleeve is arranged on the rotary brush main shaft positioning plate; the positioning mechanism includes a recess, the rotary brush main shaft centering sleeve extends into the recess, and the rotary brush main shaft positioning plate is clamped on the outside of the recess.

[0012] In some embodiments of the present invention, the fixed plate includes a strip hole extending radially along the main axis of the rotary brush, and the brush mounting positioning plate is connected to the fixed plate by a second fastener, the second fastener passes through the strip hole and can be moved and locked in the strip hole radially along the main axis of the rotary brush, and the second fastener is configured to make the brush contact the filter screen.

[0013] In some embodiments of the present invention, the fixed plate includes an upper fixed plate and a lower fixed plate, the upper fixed plate is arranged at the upper end of the rotary brush main shaft, and the lower fixed plate is arranged at the lower end of the rotary brush main shaft. There are more than two upper fixed plates and lower fixed plates and they are evenly distributed along the circumference of the rotary brush main shaft.

[0014] In some embodiments of the present invention, the automatic cleaning pipe filter also includes an adjustment pad, which is arranged on the centering sleeve of the rotary brush main shaft, and the adjustment pad is located between the rotary brush main shaft positioning plate and the raised portion around the recess, and the adjustment pad is constructed so that the brush matches the filter screen in the height direction.

[0015] In some embodiments of the present invention, the tank body assembly includes a straight section of the tank body, an upper end mounting positioning plate and a lower end mounting positioning plate, the upper end mounting positioning plate is connected to the upper end of the upper end mounting positioning plate, the lower end mounting positioning plate is connected to the lower end of the lower end mounting positioning plate, and the upper and lower ends of the filter screen assembly are respectively in contact with the upper end mounting positioning plate and the lower end mounting positioning plate.

[0016] In some embodiments of the present invention, the sealing cover assembly is connected to the top of the tank body assembly, and the drive system is arranged in the sealing cover assembly; the positioning mechanism includes a screen center positioning plate, and the screen center positioning plate is connected to the lower end mounting positioning plate or the lower end of the filter screen assembly, and the recess is arranged in the center of the screen center positioning plate.

[0017] In some embodiments of the present invention, the filter screen assembly also includes a handle, a mounting flange, an upper sealing gasket, a screen retainer and a lower sealing gasket; the filter screen is arranged on the screen retainer, the mounting flange is arranged on the upper end of the screen retainer, the mounting flange is located on the upper end mounting positioning plate, the upper sealing gasket is arranged between the mounting flange and the upper end mounting positioning plate, and the mounting flange and the upper end mounting positioning plate are connected by a detachable first fastener; the lower sealing gasket is arranged at the lower end of the screen retainer and contacts with the lower end mounting positioning plate.

[0018] In some embodiments of the present invention, the outer diameter of the screen retainer and the outer diameter of the lower sealing gasket are both smaller than the inner diameter of the upper end mounting positioning plate; the handle is provided on the mounting flange or the screen retainer, and the handle extends upward.

[0019] In some embodiments of the present invention, the screen center positioning plate is arranged on the inner side of the lower end of the screen retaining frame, and the screen center positioning plate also includes a through hole arranged separately from the recessed portion, and the through hole leads to the backwashing and emptying mechanism, and the backwashing and emptying mechanism is arranged below the straight section of the tank body.

[0020] In some embodiments of the present invention, the water inlet is arranged on the straight section of the tank body between the upper end mounting positioning plate and the sealing cover assembly, and the water outlet is arranged on the straight section of the tank body between the upper end mounting positioning plate and the lower end mounting positioning plate.

[0021] In some embodiments of the present invention, the pressure differential detection system includes a water inlet water pipe, a water inlet manual control valve, a water inlet pressure gauge, a pressure differential switch installation assembly, a water inlet pipeline, a pressure differential gauge, a water outlet pipeline, a water outlet pressure gauge, a water outlet manual control valve and a water outlet water pipe; the water inlet water pipe is connected to the straight section of the tank body between the upper mounting positioning plate and the sealing cover assembly, and the water outlet water pipe is connected to the tank body between the upper mounting positioning plate and the lower mounting positioning plate. On the straight section; the water inlet water pipe is connected to the water inlet manual control valve, one end of the water inlet manual control valve is connected to the water inlet pressure gauge and the other end is connected to the differential pressure gauge through the water inlet pipeline, the water outlet water pipe is connected to the water outlet manual control valve, one end of the water outlet manual control valve is connected to the water outlet pressure gauge and the other end is connected to the differential pressure gauge through the water outlet pipeline; the differential pressure switch mounting assembly is provided on the outer wall of the tank assembly, and the differential pressure gauge is connected to the differential pressure switch mounting assembly.

[0022] In some embodiments of the present invention, the backwash emptying mechanism includes an emptying pipe and an emptying electric valve. The emptying pipe is arranged below the tank assembly, and the emptying electric valve is arranged at the end of the emptying pipe.

[0023] In some embodiments of the present invention, the drive system includes a motor reducer, a bearing seat assembly and a drive shaft, the motor reducer is connected to the drive shaft, and the drive shaft is connected to the rotating brush mechanism; the bearing seat assembly is arranged on the sealing cover assembly, and the drive shaft is connected to the bearing seat assembly.

[0024] In some embodiments of the present invention, the sealing cover assembly includes a sealing flange and a sealing cover, the sealing flange is connected to the top of the tank body assembly, the sealing cover and the sealing flange are connected by a third fastener, and a sealing ring is provided between the sealing cover and the sealing flange.

[0025] In some embodiments of the present invention, the tank assembly includes a straight section of the tank and a bottom seal connected to the lower end of the straight section of the tank, the cross-sectional area of ​​the bottom seal gradually decreases from top to bottom, and the backwash emptying mechanism is connected to the lower end of the bottom seal.

[0026] In some embodiments of the present invention, the tank assembly further includes supporting legs, which are connected to the straight section of the tank or the bottom cover and extend downward, and there are at least two supporting legs.

[0027] Compared with the prior art, the present invention can achieve the following beneficial effects:

[0028] The utility model discloses an automatic cleaning pipeline filter, which adopts a rotary brush mechanism to clean the filter screen, reduces the frequency of disassembly and cleaning, replacement and maintenance of the filter screen, and uses a positioning mechanism to position the end of the rotary brush mechanism, so as to prevent the rotary brush mechanism from deviating from the axis of the filter screen during operation, thereby ensuring the concentricity of the rotary brush mechanism and the filter screen and avoiding wear of the rotary brush mechanism and the filter screen; at the same time, by measuring the pressure difference between the inner and outer sides of the filter screen, when the pressure difference increases, the driving mechanism is controlled to drive the rotary brush mechanism to rotate to clean the filter screen, and the backwash emptying mechanism is controlled to open to discharge the filter residue, thereby realizing automatic cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the main structure of an embodiment of the automatic cleaning pipeline filter of the present utility model.

[0030] Figure 2 It is a side structural schematic diagram of an embodiment of the automatic cleaning pipeline filter of the present utility model.

[0031] Figure 3It is a schematic diagram of the main cross-sectional structure of an embodiment of the automatic cleaning pipeline filter of the present utility model.

[0032] Figure 4 This is a schematic diagram of the main structure of the filter screen assembly of an embodiment of the automatic cleaning pipeline filter of the present invention.

[0033] Figure 5 It is a side structural schematic diagram of the filter screen assembly of an embodiment of the automatic cleaning pipeline filter of the present invention.

[0034] Figure 6 It is a schematic top view of the structure of the filter screen assembly of an embodiment of the automatic cleaning pipeline filter of the present invention.

[0035] Figure 7 It is a structural diagram of the rotary brush mechanism of an embodiment of the utility model for automatically cleaning a pipe filter.

[0036] Figure 8 It is a structural schematic diagram of the rotary brush mechanism of the automatic cleaning pipeline filter embodiment of the utility model from another perspective.

[0037] In the figure, 1-drive system, 2-sealing cover assembly, 3-pressure differential detection system, 4-tank assembly, 5-backwashing and emptying mechanism, 6-control box, 7-motor reducer, 8-bearing seat assembly, 9-drive shaft, 10-sealing cover, 11-filter screen assembly, 12-upper end mounting positioning plate, 13-rotating brush mechanism, 14-water outlet, 15-sealing flange, 16-water inlet, 17-tank straight section, 18-adjusting pad, 19-positioning mechanism, 20-lower end mounting positioning plate, 21-bottom seal, 22-support foot, 23-water inlet end water guide pipe, 24-water inlet end manual control valve, 25-water inlet end pressure gauge , 26- differential pressure switch installation assembly, 27- water inlet pipeline, 28- differential pressure gauge, 29- water outlet pipeline, 30- water outlet pressure gauge, 31- water outlet manual control valve, 32- water outlet water pipe, 33- drain pipe, 34- drain electric valve, 35- handle, 36- mounting flange, 37- upper sealing gasket, 38- screen retainer, 39- filter screen, 40- screen center positioning plate, 41- lower sealing gasket, 42- rotary brush spindle, 43- upper fixed plate, 44- brush installation positioning plate, 45- brush, 46- lower fixed plate, 47- rotary brush spindle positioning plate, 48- rotary brush spindle centering sleeve.

[0038] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods. DETAILED DESCRIPTION

[0039] like Figures 1 to 8As shown, this embodiment provides an automatic cleaning pipe filter that can efficiently filter backwash water. It can be widely used in the fields of resource and environmental technology to meet various backwash water process requirements and ensure that the recycled water meets the requirements of various equipment. The automatic cleaning pipe filter has a simple structure, a small footprint, low cost, a large water flow rate, a long service life of the rotary brush mechanism and filter screen, and can operate continuously and automatically for a long time. It has a low failure rate, is easy to assemble and disassemble, and repair, and has low maintenance costs.

[0040] Specifically, the automatic cleaning pipeline filter includes a drive system 1, a sealing cover assembly 2, a pressure difference detection system 3, a tank assembly 4, a backwash emptying mechanism 5, a control box 6, a rotary brush mechanism 13, a filter screen assembly 11 and a positioning mechanism 19.

[0041] The sealing cover assembly 2 is connected to the tank assembly 4 , and the sealing cover assembly 2 is used to seal the tank assembly 4 . The sealing cover assembly 2 and the tank assembly 4 together form a closed filtering and backwashing space.

[0042] Filter screen assembly 11 is located within tank assembly 4 and includes a cylindrical filter screen 39 for filtering solid matter from recycled water. Tank assembly 4 includes a water inlet 16 connected to the inside of filter screen 39 and a water outlet 14 connected to the outside of filter screen 39. Recycled water enters filter screen 39 through inlet 16, is filtered by filter screen 39, and is discharged through outlet 14 on the outside of filter screen 39.

[0043] The rotary brush mechanism 13 is disposed on the inner side of the filter screen 39 and is rotatable around the axis of the filter screen 39. The rotary brush mechanism 13 is used to brush off solid matter, i.e., filter residue, accumulated on the inner side of the filter screen 39. The drive system 1 is used to drive the rotary brush mechanism 13 to rotate, thereby cleaning the filter screen. The drive system 1 is disposed on the sealing cover assembly 2 or the tank assembly 4. The positioning mechanism 19 is disposed on the sealing cover assembly 2 or the tank assembly 4 or the filter screen assembly 11. The drive system 1 and the positioning mechanism 19 are disposed relative to each other. One end of the rotary brush mechanism 13 is connected to the drive system 1 and the other end is connected to the positioning mechanism 19. The drive system 1 and the positioning mechanism 19 connect the two ends of the rotary brush mechanism 13 to achieve overall positioning of the rotary brush mechanism 13. The positioning mechanism 19 can prevent the end of the rotary brush mechanism 13 from shifting, thereby causing wear of the rotary brush mechanism 13 and the filter screen 39.

[0044] The backwashing and emptying mechanism 5 is connected to the inner side of the filter screen 39 , and is used to discharge the filter residue removed from the inner side of the filter screen 39 by the rotary brush mechanism 13 .

[0045] The pressure difference detection system 3 is used to detect the pressure difference between the inside and outside of the filter screen 39. When the pressure difference between the inside and outside of the filter screen 39 exceeds a preset range, it indicates that too much solid has accumulated on the filter screen 39 and needs to be cleaned.

[0046] The control box 6 is electrically connected to the drive system 1, the pressure difference detection system 3, and the backwashing and emptying mechanism 5 respectively. A controller such as a PLC may be provided in the control box 6. The controller receives the pressure difference signal fed back by the pressure difference detection system 3. When the pressure difference signal exceeds a preset value, the drive system 1 and the backwashing and emptying mechanism 5 are controlled to start. The drive system 1 drives the rotary brush mechanism 13 to rotate and scrape the inside of the filter screen 39 to scrape off the solids inside the filter screen 39.

[0047] The working principle of the automatic cleaning pipe filter of this embodiment is as follows: water enters through the water inlet 16, and water and debris enter the interior of the filter screen assembly 11. After filtering, the qualified water enters between the filter screen assembly 11 and the tank assembly 4 and is discharged to the water outlet 14. The use of the filter screen assembly 11 is detected in real time by feedback data from the pressure difference detection system 3. The data is set through the control box 6. When the pressure difference reaches the set range, the drive system 1 is started and the backwash emptying mechanism 5 is started at the same time. The drive shaft 9 rotates through the rotating mechanism to drive the rotating brush mechanism 13 inside the tank assembly 4. The rotating brush mechanism 13 is ensured to be concentric with the filter screen assembly 11 under the action of the positioning mechanism 19. The rotating friction between the two cleans the debris adhering to the filter screen 39, and then the debris is discharged through the backwash emptying mechanism 5. The automatic cleaning pipe filter of this embodiment has a simple structure, takes up little space, meets the needs of large water flow, can operate automatically and continuously for a long time, has a low failure rate, is simple to assemble and disassemble, and repair, and has low maintenance costs.

[0048] In some examples, the rotary brush mechanism 13 includes a rotary brush main shaft 42, a fixed plate, a brush mounting positioning plate 44, a brush 45, a rotary brush main shaft positioning plate 47 and a rotary brush main shaft centering sleeve 48. The first end of the rotary brush main shaft 42 is connected to the drive system 1, the fixed plate is connected to the circumferential surface of the rotary brush main shaft 42, the brush mounting positioning plate 44 is connected to the fixed plate, the brush 45 is arranged on the brush mounting positioning plate 44, the brush 45 main shaft positioning plate is arranged at the second end of the rotary brush main shaft positioning plate 47, and the rotary brush main shaft centering sleeve 48 is arranged on the rotary brush main shaft positioning plate 47. Through the above structure, the rotary brush mechanism 13 can rotate with the rotary brush main shaft 42 as the axis, the brush 45 is connected to the brush mounting positioning plate 44, and the brush mounting positioning plate 44 is then connected to the rotary brush main shaft 42 through the fixed plate, thereby realizing the positioning and installation of the brush on the rotary brush main shaft 42.

[0049] In some examples, the positioning mechanism 19 includes a recessed portion, into which the brush spindle centering sleeve 48 extends, and the brush spindle positioning plate 47 is retained. The recessed portion of the positioning mechanism 19 cooperates with the brush spindle centering sleeve 48 and the brush spindle positioning plate 47 to achieve positioning of the distal end of the brush mechanism 13. The recessed portion may be a groove, a through-hole, or the like.

[0050] In some examples, the fixing plate includes a strip-shaped hole extending radially along the rotating brush spindle 42, with the length of the strip-shaped hole being greater than its width. The brush mounting and positioning plate 44 is connected to the fixing plate via a first fastener, such as a bolt. A second fastener passes through the strip-shaped hole and is movable radially along the rotating brush spindle 42 within the strip-shaped hole. After moving to a desired position, the second fastener can be locked, thereby allowing the position of the brush mounting and positioning plate 44 on the fixing plate to be adjustable. The second fastener is configured to ensure that the brush 45 contacts the filter screen 39 to ensure effective scraping, while not being overtightened to reduce wear.

[0051] In some examples, the fixing plate includes an upper fixing plate 43 and a lower fixing plate 46. The upper fixing plate 43 is disposed at the upper end of the rotary brush main shaft 42, and the lower fixing plate 46 is disposed at the lower end of the rotary brush main shaft 42. A gap is provided between the upper fixing plate 43 and the lower fixing plate 46 to prevent the fixing plate from exerting excessive resistance on the recycled water. There are at least two upper fixing plates 43 and lower fixing plates 46, each of which is evenly distributed along the circumference of the rotary brush main shaft 42. For example, the upper fixing plate 43 and the lower fixing plate 46 each include two opposing plates radially disposed along the rotary brush main shaft 42.

[0052] In some examples, the automatic cleaning pipe filter further includes an adjustment pad 18, which is sleeved on a brush spindle centering sleeve 48. The adjustment pad 18 is positioned between the brush spindle positioning plate 47 and a raised portion surrounding the recess. The raised portion may be, for example, a portion of the recess edge that is raised relative to the recess bottom. The adjustment pad 18 is configured to align the brush 45 with the filter screen 39 in height, thereby aligning the brush 45 with the filter screen 39 in height, thereby completely covering the filter screen 39. The rotational friction between the brush 45 and the filter screen 39 removes debris adhered to the filter screen 39. For example, after the brush spindle positioning plate 47, the brush spindle centering sleeve 48, and the adjustment pad 18 are adjusted to match the height, the brush spindle 42 can be fixed to the drive system 1 to reduce the pressure between the brush spindle positioning plate 47 and the adjustment pad 18, allowing the brush spindle centering sleeve 48 to rotate relative to the adjustment pad 18.

[0053] In some examples, the tank assembly 4 includes a tank straight section 17, an upper mounting positioning plate 12, and a lower mounting positioning plate 20. The upper mounting positioning plate 12 is connected to the upper end of the tank straight section 17, and the lower mounting positioning plate 20 is connected to the lower end of the tank straight section 17. The upper and lower ends of the filter screen assembly 11 are respectively in contact with the upper mounting positioning plate 12 and the lower mounting positioning plate 20, thereby setting the filter screen assembly 11 in the tank straight section 17. The tank straight section 17 can be cylindrical, for example.

[0054] In some examples, the sealing cover assembly 2 is connected to the opening at the top of the tank assembly 4, reducing the sealing requirements at the connection between the sealing cover assembly 2 and the tank assembly 4. The drive system 1 is provided on the sealing cover assembly 2. The positioning mechanism 19 includes a screen center positioning plate 40, which is connected to the lower end mounting positioning plate 20 or the lower end of the filter screen assembly 11. A recess is provided at the center of the screen center positioning plate 40, thereby achieving the positioning of the rotating brush mechanism 13 relative to the tank assembly 4 or the filter screen assembly 11.

[0055] In some examples, the filter screen assembly 11 further includes a handle 35, a mounting flange 36, an upper gasket 37, a screen holder 38, and a lower gasket 41. A filter screen 39 is mounted on the screen holder 38. The mounting flange 36 is located at the upper end of the screen holder 38 and is positioned on the upper mounting plate 12. The upper gasket 37 is positioned between the mounting flange 36 and the upper mounting plate 12. The mounting flange 36 and the upper mounting plate 12 are connected by a removable second fastener, such as a bolt. The upper gasket 37 is used to block the inner and outer sides of the filter screen 39. The lower gasket 41 is located at the lower end of the screen holder 38 and contacts the lower mounting plate 20. The lower gasket 41 is used to block the inner and outer sides of the filter screen 39. The sealed installation between the upper gasket 37 and the upper mounting plate 12 and the lower gasket 41 and the lower mounting plate 20 achieves sealed isolation of the filtered water before and after. The filter screen assembly 11 is not fixedly connected to the lower end mounting positioning plate 20 , so that the filter screen assembly 11 can be easily removed.

[0056] In some examples, the outer diameter of the screen retainer 38 and the outer diameter of the lower sealing gasket 41 are both smaller than the inner diameter of the upper mounting positioning plate 12; the handle 35 is provided on the mounting flange 36 or the screen retainer 38, and the handle 35 extends upward to facilitate the removal of the filter screen assembly 11 from the upper mounting positioning plate 12.

[0057] In some examples, a screen centering plate 40 is disposed inside the lower end of the screen holder 38 to more precisely align the rotating brush mechanism 13 with the filter screen assembly 11. The screen centering plate 40 also includes a through hole separated from the recessed portion, which leads to a backwash drain mechanism 5 disposed below the straight section 17 of the tank body to facilitate removal of solids from the inside of the filter screen 39.

[0058] In some examples, the water inlet 16 is provided on the straight section 17 of the tank body between the upper mounting plate 12 and the sealing cover assembly 2, so that the recycled water entering through the water inlet 16 first flows toward the inner side of the filter screen 39. The water outlet 14 is provided on the straight section 17 of the tank body between the upper mounting plate 12 and the lower mounting plate 20, so that the recycled water filtered by the filter screen 39 is discharged from the straight section 17 of the tank body.

[0059] In some examples, the pressure differential detection system 3 includes an inlet water conduit 23, an inlet manual control valve 24, an inlet pressure gauge 25, a pressure differential switch mounting assembly 26, an inlet pipeline 27, a pressure differential gauge 28, an outlet pipeline 29, an outlet pressure gauge 30, an outlet manual control valve 31, and an outlet water conduit 32. The inlet water conduit 23 is connected to the straight section 17 of the tank body between the upper mounting plate 12 and the sealing cover assembly 2. The water directed by the inlet water conduit 23 is the water at the water inlet 16, i.e., the water inside the filter screen 39. The outlet water conduit 32 is connected to the straight section 17 of the tank body between the upper mounting plate 12 and the lower mounting plate 20. The water directed by the inlet water conduit 23 is the water at the water outlet 14, i.e., the water outside the filter screen 39. The inlet water conduit 23 is connected to the inlet manual control valve 24. One end of the inlet manual control valve 24 is connected to the inlet pressure gauge 25, and the other end is connected to the differential pressure gauge 28 via the inlet pipe 27. By adjusting the inlet manual control valve 24, the water inside the filter screen 39 can be connected to the differential pressure gauge 28 or the inlet pressure gauge 25, making it easier to observe the inlet pressure. The outlet water conduit 32 is connected to the outlet manual control valve 31. One end of the outlet manual control valve 31 is connected to the outlet pressure gauge 30, and the other end is connected to the differential pressure gauge 28 via the outlet pipe 29. The differential pressure switch mounting assembly 26 is provided on the outer wall of the tank assembly 4. The differential pressure gauge 28 is connected to the differential pressure switch mounting assembly 26, thereby achieving the positioning and installation of the differential pressure gauge 28 and facilitating assembly. The differential pressure gauge 28 is connected to the electrical control box 6 to output a differential pressure signal to the electrical control box 6.

[0060] In some examples, the backwash emptying mechanism 5 includes an emptying pipe 33 and an emptying electric valve 34. The emptying pipe 33 is arranged below the tank assembly 4, and the emptying electric valve 34 is arranged at the end of the emptying pipe 33. The emptying electric valve 34 is connected to the electric control box 6, and its opening and closing are controlled by the electric control box 6.

[0061] In some examples, the drive system 1 includes a motor reducer 7, a bearing seat assembly 8, and a drive shaft 9. The motor reducer 7 is connected to the drive shaft 9, and the motor reducer 7 can reduce the rotational speed. The drive shaft 9 is connected to the rotary brush mechanism 13, thereby driving the rotary brush mechanism 13 to rotate. The bearing seat assembly 8 is provided on the sealing cover assembly 2, and the drive shaft 9 is connected to the bearing seat assembly 8, thereby achieving a rotatable connection between the drive shaft 9 and the sealing cover assembly 2.

[0062] In some examples, the sealing cover assembly 2 includes a sealing flange 15 and a sealing cover 10. The sealing flange 15 is connected, for example, by welding, to the top of the tank assembly 4. The sealing cover 10 and the sealing flange 15 are connected by a third fastener, which can be, for example, a bolt, etc. A sealing ring is provided between the sealing cover 10 and the sealing flange 15 to improve the sealing performance.

[0063] In some examples, the tank assembly 4 includes a straight tank section 17 and a bottom seal 21 connected to the lower end of the straight tank section 17. The cross-sectional area of ​​the bottom seal 21 gradually decreases from top to bottom. The backwashing and emptying mechanism 5 is connected to the lower end of the bottom seal 21 to facilitate the accumulation of filter residue and its discharge from the backwashing and emptying mechanism 5. The tank assembly 4 can be configured to meet the required specifications based on the water inlet and outlet volumes and the flow rate of the filter screen 39.

[0064] In some examples, the tank assembly 4 also includes support feet 22, which are connected to the tank straight section 17 or the bottom cover 21 and extend downward. There are at least two support feet 22. The support feet 22 can play a supporting role and provide space for the backwash emptying mechanism 5 below the tank assembly 4.

[0065] Finally, it should be emphasized that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. An automatic cleaning pipe filter, characterized in that It includes a drive system, a sealing cover assembly, a pressure difference detection system, a tank assembly, a backwash emptying mechanism, a control box, a rotary brush mechanism, a filter screen assembly and a positioning mechanism; The sealing cover assembly is connected to the tank assembly; The filter screen assembly is arranged in the tank assembly, the filter screen assembly includes a cylindrical filter screen, and the tank assembly includes a water inlet connected to the inner side of the filter screen and a water outlet connected to the outer side of the filter screen; The rotating brush mechanism is provided on the inner side of the filter screen and can rotate around the axis of the filter screen, the driving system is provided on the sealing cover assembly or the tank assembly, the positioning mechanism is provided on the sealing cover assembly or the tank assembly or the filter screen assembly, the driving system and the positioning mechanism are arranged opposite to each other, one end of the rotating brush mechanism is connected to the driving system and the other end is connected to the positioning mechanism; The backwashing and emptying mechanism is connected to the inner side of the filter screen; The pressure difference detection system is used to detect the pressure difference between the inner side of the filter screen and the outer side of the filter screen; The control box is electrically connected to the driving system, the pressure difference detection system, and the backwashing and emptying mechanism respectively.

2. The automatic cleaning pipe filter according to claim 1, characterized in that The rotary brush mechanism includes a rotary brush spindle, a fixed plate, a brush mounting and positioning plate, a brush, a rotary brush spindle positioning plate and a rotary brush spindle centering sleeve, the first end of the rotary brush spindle is connected to the drive system, the fixed plate is connected to the circumferential surface of the rotary brush spindle, the brush mounting and positioning plate is connected to the fixed plate, the brush is arranged on the brush mounting and positioning plate, the brush spindle positioning plate is arranged on the second end of the rotary brush spindle positioning plate, and the rotary brush spindle centering sleeve is arranged on the rotary brush spindle positioning plate; The positioning mechanism includes a recessed portion, the rotary brush main shaft centering sleeve extends into the recessed portion, and the rotary brush main shaft positioning plate is clamped on the outer side of the recessed portion.

3. The automatic cleaning pipe filter according to claim 2, characterized in that The fixing plate includes a strip-shaped hole extending radially along the main axis of the rotary brush, the brush mounting and positioning plate is connected to the fixing plate via a second fastener, the second fastener passes through the strip-shaped hole and can be moved and locked in the strip-shaped hole radially along the main axis of the rotary brush, and the second fastener is configured to make the brush contact the filter screen; And / or, the fixing plate includes an upper fixing plate and a lower fixing plate, the upper fixing plate is arranged at the upper end of the rotary brush main shaft, the lower fixing plate is arranged at the lower end of the rotary brush main shaft, and there are more than two upper fixing plates and two lower fixing plates and they are evenly distributed along the circumference of the rotary brush main shaft; And / or, the automatic cleaning pipe filter also includes an adjustment pad, which is mounted on a centering sleeve of the rotary brush spindle, and is located between the rotary brush spindle positioning plate and the raised portion around the recess, and the adjustment pad is constructed so that the brush matches the filter screen in the height direction.

4. The automatic cleaning pipe filter according to claim 2, characterized in that The tank assembly includes a straight section of the tank, an upper mounting positioning plate and a lower mounting positioning plate, wherein the upper mounting positioning plate is connected to the upper end of the straight section of the tank, and the lower mounting positioning plate is connected to the lower end of the straight section of the tank, and the upper and lower ends of the filter screen assembly are in contact with the upper mounting positioning plate and the lower mounting positioning plate respectively; The sealing cover assembly is connected to the top of the tank assembly, and the drive system is arranged in the sealing cover assembly; the positioning mechanism includes a screen center positioning plate, and the screen center positioning plate is connected to the lower end mounting positioning plate or the lower end of the filter screen assembly, and the recess is arranged in the center of the screen center positioning plate.

5. The automatic cleaning pipe filter according to claim 4, characterized in that The filter screen assembly further includes a handle, a mounting flange, an upper sealing gasket, a screen retaining frame and a lower sealing gasket; the filter screen is arranged on the screen retaining frame, the mounting flange is arranged on the upper end of the screen retaining frame, the mounting flange is located on the upper end mounting positioning plate, the upper sealing gasket is arranged between the mounting flange and the upper end mounting positioning plate, and the mounting flange and the upper end mounting positioning plate are connected by a detachable first fastener; the lower sealing gasket is arranged at the lower end of the screen retaining frame and contacts the lower end mounting positioning plate; The outer diameter of the screen holder and the outer diameter of the lower sealing gasket are both smaller than the inner diameter of the upper mounting positioning plate; the handle is provided on the mounting flange or the screen holder, and the handle extends upward; The screen center positioning plate is arranged on the inner side of the lower end of the screen retaining frame, and the screen center positioning plate also includes a through hole arranged separately from the recessed part, the through hole leads to the backwash emptying mechanism, and the backwash emptying mechanism is arranged below the straight section of the tank body.

6. The automatic cleaning pipe filter according to claim 4, characterized in that The water inlet is provided on the straight section of the tank body between the upper mounting positioning plate and the sealing cover assembly, and the water outlet is provided on the straight section of the tank body between the upper mounting positioning plate and the lower mounting positioning plate; The pressure difference detection system includes a water inlet water pipe, a water inlet manual control valve, a water inlet pressure gauge, a pressure difference switch installation assembly, a water inlet pipeline, a pressure difference gauge, a water outlet pipeline, a water outlet pressure gauge, a water outlet manual control valve and a water outlet water pipe; the water inlet water pipe is connected to the straight section of the tank body between the upper end mounting positioning plate and the sealing cover assembly, and the water outlet water pipe is connected to the straight section of the tank body between the upper end mounting positioning plate and the lower end mounting positioning plate; the inlet The water end water pipe is connected to the water inlet manual control valve, one end of the water inlet manual control valve is connected to the water inlet pressure gauge and the other end is connected to the differential pressure gauge through the water inlet pipeline, the water outlet water pipe is connected to the water outlet manual control valve, one end of the water outlet manual control valve is connected to the water outlet pressure gauge and the other end is connected to the differential pressure gauge through the water outlet pipeline; the differential pressure switch mounting assembly is arranged on the outer wall of the tank assembly, and the differential pressure gauge is connected to the differential pressure switch mounting assembly.

7. An automatic cleaning pipeline filter according to any one of claims 1 to 6, characterized in that The backwash emptying mechanism includes an emptying pipe and an emptying electric valve. The emptying pipe is arranged below the tank assembly, and the emptying electric valve is arranged at the end of the emptying pipe.

8. An automatic cleaning pipeline filter according to any one of claims 1 to 6, characterized in that The drive system includes a motor reducer, a bearing seat assembly and a drive shaft, the motor reducer is connected to the drive shaft, and the drive shaft is connected to the rotating brush mechanism; the bearing seat assembly is arranged on the sealing cover assembly, and the drive shaft is connected to the bearing seat assembly.

9. An automatic cleaning pipeline filter according to any one of claims 1 to 6, characterized in that The sealing cover assembly includes a sealing flange and a sealing cover. The sealing flange is connected to the top of the tank assembly. The sealing cover and the sealing flange are connected by a third fastener. A sealing ring is provided between the sealing cover and the sealing flange.

10. An automatic cleaning pipeline filter according to any one of claims 1 to 6, characterized in that The tank assembly includes a straight section of the tank and a bottom seal connected to the lower end of the straight section of the tank, wherein the cross-sectional area of ​​the bottom seal gradually decreases from top to bottom, and the backwashing and emptying mechanism is connected to the lower end of the bottom seal; The tank assembly further includes supporting legs, which are connected to the straight section of the tank or the bottom cover and extend downward, and there are at least two supporting legs.

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