Filter screen cleaning assembly of magnetic drive self-cleaning filter

Abstract

The utility model relates to the technical field of self-cleaning filters, in particular to a filter screen cleaning assembly of a magnetic drive self-cleaning filter, which comprises a scraper blade, the driving structure is used for driving the scraping plate to relatively move along the surface of the filter screen; one end of each elastic piece is connected with the scraping plate, the other end of each elastic piece extends towards the filter screen and forms a protruding part, and the size of each protruding part is smaller than or equal to the diameter of a filter hole in the surface of the filter screen, so that the protruding parts can be embedded into the filter holes under the elastic action of the elastic pieces. The elastic pieces are additionally arranged on the basis of the scraping plate, the elastic pieces can be matched with elasticity to drive the protrusions to clean the filter holes, when the driving structure drives the scraping plate to slide relative to the surface of the filter screen to scrape a dirt layer, the elastic pieces apply elastic force to the protrusions, the protrusions are bounced into the filter holes in the surface of the filter screen, and therefore the dirt layer is cleaned. Therefore, particles embedded in the filter holes are ejected out of the filter screen, the surface of the filter screen and the filter holes are cleaned at the same time, and the particles are prevented from blocking the filter holes.

Description

Technical Field

[0001] The utility model relates to the technical field of self-cleaning filters, in particular to a filter screen cleaning component of a magnetically driven self-cleaning filter. Background Art

[0002] Self-cleaning filters use the filter to directly intercept impurities in the water to remove suspended matter and particulate matter in the water, protecting the normal operation of other equipment in the system. After a period of use, a certain amount of impurities will accumulate on the filter, causing the filter permeability to decrease, the pressure to increase, and the flow rate to decrease. In order to restore the filtration efficiency and the normal operation of the system, the impurities on the filter must be cleaned in time. The existing filter cleaning methods are mainly divided into scraping and adsorption types. Scraping cleaning is to drive the scraper to move along the surface of the filter to scrape off the dirt accumulated on the surface of the filter, while adsorption cleaning is to set a suction nozzle inside the filter, and use the suction nozzle to suck the impurity particles on the surface of the filter into the drain valve along with the water flow.

[0003] Current technical problems: Both cleaning methods have different defects. For example, the scraper cannot reach into the filter holes to scrape off the particles embedded in the filter holes. Although the suction nozzle can absorb the particles embedded in the filter holes, the suction range is small and the cleaning efficiency is low. When the dirt layer is thick or the particles are large, the suction nozzle is easily blocked, resulting in the need for frequent maintenance of the suction nozzle. Therefore, it is necessary to design a new cleaning component to improve this situation. Utility Model Content

[0004] In view of this, the purpose of the present invention is to provide a filter screen cleaning assembly for a magnetically driven self-cleaning filter, so as to solve the technical problem that the cleaning assembly of the existing self-cleaning filter cannot effectively clean the filter screen pores.

[0005] Based on the above objectives, the utility model provides a filter screen cleaning assembly for a magnetically driven self-cleaning filter, comprising:

[0006] scraper;

[0007] A driving structure for driving the scraper to move relative to the filter surface;

[0008] One end of each of the spring pieces is connected to the scraper, and the other end of each of the spring pieces extends toward the filter screen to form a protrusion. The volume of the protrusion is less than or equal to the diameter of the filter hole on the filter screen surface, so that the protrusion can be embedded in the filter hole under the elastic action of the spring piece.

[0009] As a preferred technical solution of the present invention, a sharp portion is formed at the edge of the scraper, and the sharp portion is in contact with the surface of the filter screen.

[0010] As a preferred technical solution of the present utility model, the driving structure includes:

[0011] One end of the screw is rotated in the filter housing, and the other end of the screw is matched with a screw groove provided on the surface of the scraper;

[0012] A guide rod having one end fixed in the filter housing, and the other end of the guide rod being engaged with a guide groove provided in the scraper;

[0013] A magnetic drive device is used to drive the screw to rotate.

[0014] As a preferred technical solution of the present utility model, the magnetic drive device includes:

[0015] a motor located at the top of the filter housing;

[0016] a main rotor of a magnetic coupler connected to the output shaft of the motor, wherein a groove structure is provided on the top of the filter housing, and the main rotor of the magnetic coupler is embedded in the groove structure;

[0017] Rotating a rotating sleeve disposed inside the groove structure, wherein the rotating sleeve is connected to the screw rod;

[0018] The magnetic coupler secondary rotor matches the magnetic coupler primary rotor, and the magnetic coupler secondary rotor is arranged on the inner wall of the rotating sleeve.

[0019] As an optimal technical solution of the present invention, a cover plate is detachably provided at the top of the filter housing, an inlet valve is provided at the upper left end of the filter housing, an outlet valve is provided at the lower right end of the filter housing, partitions are provided at the upper and lower ends of the filter screen, a filtered liquid area is formed between the partition, the filter housing and the filter screen, and the outlet valve is connected to the filtered liquid area.

[0020] As a preferred technical solution of the present invention, a first drain valve is provided at the bottom of the filter housing.

[0021] As a preferred technical solution of the present utility model, a second sewage valve is provided between the first sewage valve and the outlet valve.

[0022] As a preferred technical solution of the present invention, the cleaning assembly further comprises: a mounting ring detachably provided on the upper end of the scraper, and the annular array of springs is provided on the mounting ring.

[0023] As a preferred technical solution of the present invention, a first mounting hole is provided on the surface of the mounting ring, a second mounting hole matching the first mounting hole is provided on the surface of the scraper, and a bolt is connected between the second mounting hole and the first mounting hole.

[0024] The beneficial effects of the present invention are as follows: the present invention adds a spring sheet on the basis of the scraper, which can cooperate with the elasticity of the spring sheet to drive the protrusion to clean the filter holes. When the driving structure drives the scraper to slide relative to the surface of the filter to scrape off the dirt layer, the spring sheet exerts elastic force on the protrusion, and the protrusion is bounced into the filter holes on the surface of the filter, thereby ejecting the particles embedded in the filter holes from the filter, thereby achieving simultaneous cleaning of the filter surface and the filter holes, preventing particles from clogging the filter holes, and having a significant cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0027] Figure 2 This is a schematic diagram of a half-cut three-dimensional structure of the present utility model;

[0028] Figure 3 This is a schematic diagram of the three-dimensional structure of the mounting ring and scraper of the utility model;

[0029] Figure 4 This is a schematic diagram of the three-dimensional structure of the cover plate, motor and screw rod of the utility model.

[0030] The markings in the figure are: 1. filter housing; 2. cover plate; 3. inlet valve; 4. outlet valve; 5. filter screen; 6. partition; 7. scraper; 8. sharp part; 9. screw groove; 10. guide groove; 11. motor; 12. magnetic coupler main rotor; 13. groove structure; 14. rotating sleeve; 15. magnetic coupler secondary rotor; 16. screw; 17. guide rod; 18. mounting ring; 19. spring; 20. raised part; 21. first mounting hole; 22. second mounting hole; 23. bolt; 24. hollow groove; 25. first drain valve; 26. second drain valve. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0032] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the usual meanings understood by people with ordinary skills in the field to which this utility model belongs. The "first", "second" and similar words used in this utility model do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0033] like Figure 2 and Figure 3 As shown, a filter screen cleaning assembly for a magnetically driven self-cleaning filter includes: a scraper 7; a drive structure for driving the scraper 7 to move relative to the surface of a filter screen 5; a plurality of spring pieces 19 connected to the scraper 7 at one end, the other end of each spring piece 19 extending toward the filter screen 5 and forming a protrusion 20, the volume of the protrusion 20 being less than or equal to the diameter of the filter holes on the surface of the filter screen 5, so that the protrusion 20 can be embedded in the filter holes under the elastic action of the spring piece 19;

[0034] The above technical solution can fully clean the filter 5. When the filter 5 needs to be cleaned, the driving structure is started to drive the scraper 7 to slide relative to the surface of the filter 5, thereby scraping off the dirt layer attached to the surface of the filter 5. While the scraper 7 is moving, the spring 19 applies elastic force to the protrusion 20, and the protrusion 20 is bounced into the filter holes on the surface of the filter 5, thereby ejecting the particles embedded in the filter holes out of the filter 5, thereby achieving simultaneous cleaning of the surface and filter holes of the filter 5, preventing particles from clogging the filter holes, and achieving a significant cleaning effect.

[0035] like Figure 3 As shown, in this embodiment, a sharp portion 8 is formed at the edge of the scraper 7, and the sharp portion 8 is in contact with the surface of the filter 5;

[0036] The above technical solution can be used to scrape off the dirt layer on the surface of the filter screen 5. Since the scraper 7 is provided with the sharp portion 8, the cutting force of the scraper 7 on the dirt layer can be increased.

[0037] like Figure 2 and Figure 4As shown, in this embodiment, the driving structure includes: a screw rod 16 rotatably arranged in the filter housing 1 at one end, and the other end of the screw rod 16 cooperates with the screw rod groove 9 opened on the surface of the scraper 7; a guide rod 17 fixed at one end in the filter housing 1, and the other end of the guide rod 17 cooperates with the guide groove 10 opened in the scraper 7; a magnetic driving device for driving the screw rod 16 to rotate; specifically, the magnetic driving device includes: a motor 11 provided at the top of the filter housing 1; a magnetic coupler main rotor 12 connected to the output shaft of the motor 11, a groove structure 13 is provided at the top of the filter housing 1, and the magnetic coupler main rotor 12 is embedded in the groove structure 13; a rotating sleeve 14 rotatably arranged inside the groove structure 13, and the rotating sleeve 14 is connected to the screw rod 16; a magnetic coupler sub-rotor 15 cooperating with the magnetic coupler main rotor 12, and the magnetic coupler sub-rotor 15 is provided on the inner wall of the rotating sleeve 14;

[0038] The adoption of the above technical solution can improve the sealing performance of the filter housing 1. By setting the magnetic coupler main rotor 12 and the magnetic coupler secondary rotor 15, the motor 11 and the screw 16 can be connected in an "air-to-air" manner, so there is no need to open a through groove on the surface of the filter housing. Specifically, when in use, the output shaft of the motor 11 drives the magnetic coupler main rotor 12 to rotate. Under the rule that like poles repel and unlike poles attract, the magnetic coupler main rotor 12 will drive the magnetic coupler secondary rotor 15 to rotate, and the magnetic coupler secondary rotor 15 will drive the rotating sleeve 14 connected thereto to rotate around the groove structure 13, thereby driving the screw 16 connected to the rotating sleeve 14 to rotate. The screw 16 cooperates with the screw groove 9 to drive the scraper 7 to slide along the surface of the filter screen 5. Since a guide rod 17 is provided, the guide groove 10 on the surface of the scraper 7 will slide along the guide rod 17 when the scraper 7 slides, preventing the scraper 7 from rotating and improving the stability of the structure.

[0039] like Figure 1 and Figure 2 As shown, in this embodiment, a cover plate 2 is detachably provided at the top of the filter housing 1, an inlet valve 3 is provided at the upper left end of the filter housing 1, an outlet valve 4 is provided at the lower right end of the filter housing 1, and partitions 6 are provided at the upper and lower ends of the filter screen 5. A filtrate area is formed between the partition 6, the filter housing 1, and the filter screen 5, and the outlet valve 4 is connected to the filtrate area; a first drain valve 25 is provided at the bottom of the filter housing 1; and a second drain valve 26 is provided between the first drain valve 25 and the outlet valve 4.

[0040] The above technical solution can facilitate sewage discharge. When cleaning the filter 5, the outlet valve 4 is closed and the second sewage valve 26 is opened, so that the outlet valve 4 is connected to the first sewage valve 25 through the second sewage valve 26. The motor 11 drives the screw rod 16 to rotate, thereby driving the scraper 7 to move downward, scraping off the dirt layer attached to the surface of the filter 5, and the dirt falls into the bottom of the filter housing 1 and is discharged through the first sewage valve 25. At the same time, the spring 19 cooperates with the protrusion 20 to bounce the particles embedded in the filter holes of the filter 5 into the filtered liquid area. The particles in the filtered liquid area flow into the second sewage valve 26 along the outlet valve 4 and the first sewage valve 25.

[0041] like Figure 3 As shown, in this embodiment, the cleaning assembly further includes: a mounting ring 18 detachably mounted on the upper end of the scraper 7, and springs 19 are arranged in a ring array on the mounting ring 18; specifically, a first mounting hole 21 is formed on the surface of the mounting ring 18, and a second mounting hole 22 is formed on the surface of the scraper 7 to match the first mounting hole 21, and a bolt 23 is connected between the second mounting hole 22 and the first mounting hole 21;

[0042] The above technical solution can facilitate maintenance of the interior of the filter housing 1. During maintenance, the cover plate 2 is removed and the cover plate 2 together with the screw rod 16, the guide rod 17 and the scraper 7 are taken out from the filter housing 1. The motor 11 is started to drive the screw rod 16 to rotate, thereby driving the scraper 7 to slide relative to the screw rod 16 until the scraper 7 is completely disengaged from the screw rod 16. Use a screwdriver to unscrew the bolts 23 on the surface of the mounting ring 18, and the mounting ring 18 and the guide rod 17 can be disassembled, which is convenient for maintenance.

[0043] like Figure 3 As shown, in this embodiment, a hollow groove 24 is provided on the surface of the scraper 7;

[0044] The above technical solution can prevent the scraper 7 from having excessive pressure when it moves downward. During the downward movement of the scraper 7 , the liquid flows through the scraper 7 through the hollow grooves 24 , thereby maintaining a stable pressure inside the filter housing 1 .

[0045] Working principle: When cleaning the filter 5, close the outlet valve 4 and open the second drain valve 26, so that the outlet valve 4 is connected to the first drain valve 25 through the second drain valve 26, and the output shaft of the starting motor 11 drives the magnetic coupler main rotor 12 to rotate. Under the rule that like poles repel and unlike poles attract, the magnetic coupler main rotor 12 will drive the magnetic coupler secondary rotor 15 to rotate, and the magnetic coupler secondary rotor 15 will drive the rotating sleeve 14 connected thereto to rotate around the groove structure 13, thereby driving the screw 16 connected to the rotating sleeve 14 to rotate, and the screw 16 cooperates with the screw groove 9 to drive The scraper 7 slides along the surface of the filter screen 5 to scrape off the dirt layer attached to the surface of the filter screen 5. The dirt falls into the bottom of the filter housing 1 and is discharged through the first drain valve 25. While the scraper 7 is moving, the spring 19 exerts elastic force on the protrusion 20, and the protrusion 20 is bounced into the filter holes on the surface of the filter screen 5, thereby ejecting the particles embedded in the filter holes out of the filter screen 5 into the filtered liquid area. The particles in the filtered liquid area flow into the second drain valve 26 along the outlet valve 4 and the first drain valve 25, thereby achieving simultaneous cleaning of the surface and filter holes of the filter screen 5, preventing particles from clogging the filter holes, and achieving a significant cleaning effect.

[0046] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Within the scope of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0047] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, 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. A filter screen cleaning assembly for a magnetically driven self-cleaning filter, comprising: scraper (7); a driving structure for driving the scraper (7) to move relative to the surface of the filter screen (5); Characterized in that, the cleaning component also includes: A plurality of spring pieces (19) are connected to the scraper (7) at one end, and the other end of each spring piece (19) extends toward the filter screen (5) to form a protrusion (20), wherein the volume of the protrusion (20) is less than or equal to the diameter of the filter hole on the surface of the filter screen (5), so that the protrusion (20) can be embedded in the filter hole under the elastic action of the spring piece (19).

2. The filter screen cleaning assembly of the magnetic drive self-cleaning filter according to claim 1, characterized in that: A sharp portion (8) is formed at the edge of the scraper (7), and the sharp portion (8) is in contact with the surface of the filter screen (5).

3. The filter screen cleaning assembly of the magnetic drive self-cleaning filter according to claim 1, characterized in that: The driving structure includes: One end of the screw rod (16) is rotated in the filter housing (1), and the other end of the screw rod (16) is matched with a screw rod groove (9) provided on the surface of the scraper (7); A guide rod (17) having one end fixed in the filter housing (1), and the other end of the guide rod (17) cooperating with a guide groove (10) provided in the scraper (7); A magnetic drive device is used to drive the screw rod (16) to rotate.

4. The filter screen cleaning assembly of the magnetic drive self-cleaning filter according to claim 3, characterized in that: The magnetic drive device comprises: a motor (11) disposed at the top of the filter housing (1); A magnetic coupler main rotor (12) connected to the output shaft of the motor (11), a groove structure (13) being provided at the top end of the filter housing (1), and the magnetic coupler main rotor (12) being embedded in the groove structure (13); Rotating a rotating sleeve (14) disposed inside the groove structure (13), wherein the rotating sleeve (14) is connected to a screw rod (16); A magnetic coupler secondary rotor (15) is matched with the magnetic coupler primary rotor (12), and the magnetic coupler secondary rotor (15) is arranged on the inner wall of the rotating sleeve (14).

5. The filter screen cleaning assembly of the magnetic drive self-cleaning filter according to claim 4, characterized in that: The top end of the filter housing (1) is detachably provided with a cover plate (2), the left upper end of the filter housing (1) is provided with an inlet valve (3), the right lower end of the filter housing (1) is provided with an outlet valve (4), the upper and lower ends of the filter screen (5) are provided with partitions (6), a filtered liquid area is formed between the partitions (6), the filter housing (1) and the filter screen (5), and the outlet valve (4) is in communication with the filtered liquid area.

6. The filter screen cleaning assembly of the magnetic drive self-cleaning filter according to claim 5, characterized in that: A first drain valve (25) is provided at the bottom of the filter housing (1).

7. The filter screen cleaning assembly of the magnetic drive self-cleaning filter according to claim 6, characterized in that: A second sewage discharge valve (26) is provided between the first sewage discharge valve (25) and the outlet valve (4).

8. The filter screen cleaning assembly of the magnetic drive self-cleaning filter according to claim 2, characterized in that: The cleaning assembly further comprises: a mounting ring (18) detachably arranged on the upper end of the scraper (7); and the spring pieces (19) are arranged in an annular array on the mounting ring (18).

9. The filter screen cleaning assembly of the magnetic drive self-cleaning filter according to claim 8, characterized in that: A first mounting hole (21) is provided on the surface of the mounting ring (18), a second mounting hole (22) matching the first mounting hole (21) is provided on the surface of the scraper (7), and a bolt (23) is connected between the second mounting hole (22) and the first mounting hole (21).

10. The filter screen cleaning assembly of the magnetic drive self-cleaning filter according to claim 9, characterized in that: A hollow groove (24) is provided on the surface of the scraper (7).

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