Anti-pollution and anti-blocking long-acting filtering membrane assembly

Abstract

The invention relates to the technical field of filter membranes, discloses an anti-pollution and anti-blocking long-acting filter membrane assembly, and solves the problem that the service life is affected due to poor anti-pollution and anti-blocking effects of an existing filter membrane assembly. The device comprises a first filter, a second filter, a controller, a water inlet main pipe, a booster pump, a water inlet branch pipe I, a water inlet branch pipe II, a water drainage main pipe, a water drainage branch pipe I, a water drainage branch pipe II, a concentrated water drainage pipe, a concentrated water drainage branch pipe I and a concentrated water drainage branch pipe II, the filter element is composed of a top plate, a bottom plate, a water collecting pipe, a first filter assembly, a second filter assembly, a third filter assembly, a first sewage disposal assembly, a second sewage disposal assembly and a third sewage disposal assembly. According to the filtering membrane assembly, backwashing decontamination can be achieved, particles can be prevented from being clamped between the two layers of membranes, the anti-pollution and anti-blocking effect is effectively improved, and then the long-term effect of the filtering membrane assembly is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of filtration membranes, and in particular relates to a long-acting filtration membrane component that is resistant to fouling and clogging. Background Art

[0002] At present, with the development of society, people pay more and more attention to health issues. Since tap water contains many substances that are not good for health, more and more people will install water purification equipment in their homes to filter the tap water.

[0003] Most of the current water purification equipment uses filter membranes such as reverse osmosis membranes, ultrafiltration membranes or nanofiltration membranes for filtration. However, the existing filter membranes are generally multi-layer structures, and the multiple layers of filter membranes are arranged closely. After the filter membrane has been filtered for a certain period of time, particles of similar sizes will clog the filter membrane pores and will also be sandwiched between the two layers of filter membranes and difficult to remove, thereby reducing the filtration efficiency. At this time, the filter membrane needs to be replaced, but the replacement operation is quite cumbersome, which not only causes waste of filter membranes, but also has a very high cost. Therefore, the present application proposes a long-lasting filter membrane assembly that is resistant to fouling and clogging. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a long-lasting filtration membrane assembly that is resistant to fouling and clogging, which effectively solves the problem that the existing filtration membrane assembly has poor anti-fouling and clogging effect and affects its service life.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a long-lasting filtration membrane assembly with anti-fouling and clogging resistance, comprising a first filter, a second filter, a controller, an inlet main pipe, a booster pump, an inlet branch pipe 1, an inlet branch pipe 2, a drainage main pipe, a drainage branch pipe 1, a drainage branch pipe 2, a concentrated water drainage pipe, a concentrated water drainage branch pipe 1 and a concentrated water drainage branch pipe 2, wherein the booster pump is connected to the inlet main pipe, the inlet branch pipe 1 is connected between the inlet main pipe and the first filter, the inlet branch pipe 2 is connected between the inlet main pipe and the second filter, the drainage branch pipe 1 is connected between the drainage main pipe and the first filter, the drainage branch pipe 2 is connected between the drainage main pipe and the second filter, the concentrated water drainage branch pipe 1 is connected between the concentrated water drainage pipe and the first filter, and the concentrated water drainage branch pipe 2 is connected between the concentrated water drainage pipe and the second filter;

[0006] The first filter and the second filter are both composed of a shell, a base and a filter core, the shell is connected to the top of the base, and the filter core is connected to the inside of the shell and located at the top of the base;

[0007] The filter element is composed of a top plate, a bottom plate, a water collecting pipe, a first filter assembly, a second filter assembly, a third filter assembly, a first dirt cleaning assembly, a second dirt cleaning assembly and a third dirt cleaning assembly. The first filter assembly, the second filter assembly and the third filter assembly are all connected between the top plate and the bottom plate. The second filter assembly is sleeved on the first filter assembly, and the third filter assembly is sleeved on the second filter assembly. An inner chamber is formed between the first filter assembly and the second filter assembly, between the second filter assembly and the third filter assembly, and between the third filter assembly and the housing. The first dirt cleaning assembly is located between the first filter assembly and the second filter assembly, the second dirt cleaning assembly is located between the second filter assembly and the third filter assembly, and the third dirt cleaning assembly is located between the third filter assembly and the housing.

[0008] Preferably, an activated carbon pre-filter 1 is provided on the water inlet branch pipe 1, and an activated carbon pre-filter 2 is provided on the water inlet branch pipe 2.

[0009] Preferably, an air intake pipe 1 is provided on one side of the drainage branch pipe 1, an air intake pipe 2 is provided on one side of the drainage branch pipe 2, and an air pump is provided between the air intake pipe 1 and the air intake pipe 2.

[0010] Preferably, solenoid valves are provided on the water inlet branch pipe 1, the water inlet branch pipe 2, the drainage main pipe, the concentrated water drainage branch pipe 1, the concentrated water drainage branch pipe 2, the air inlet pipe 1 and the air inlet pipe 2.

[0011] Preferably, the shell and the base are in a threaded connection structure, and a sealing ring is provided inside the base.

[0012] Preferably, a first positioning sleeve matching the filter core is fixedly provided on the side edge of the top end of the shell, and a second positioning sleeve matching the filter core is fixedly provided on the side edge of the top end of the base.

[0013] Preferably, the top end of the water collecting pipe is inserted into the top plate and fixedly connected to the top plate, a through hole matching the drainage branch pipe one and the drainage branch pipe two is opened in the middle position of the top end of the water collecting pipe, the bottom end of the water collecting pipe is a closed structure, and a plurality of water permeable holes are opened on the side of the water collecting pipe.

[0014] Preferably, the first filter assembly, the second filter assembly and the third filter assembly are all composed of a supporting mesh sleeve and a filter membrane, and the filter membrane is fixedly connected to the outer surface of the supporting mesh sleeve.

[0015] Preferably, the first cleaning assembly, the second cleaning assembly and the third cleaning assembly are all composed of an annular support sleeve, a floating ring, an inner support sleeve and an annular cleaning brush, the floating ring is fixedly connected to the inner surface of the annular support sleeve, the inner support sleeve is fixedly connected to the inner surface of the floating ring, and the annular cleaning brush is fixedly connected to the inner surface of the inner support sleeve.

[0016] Preferably, a plurality of vertical guide columns are fixedly provided on the side edges of the support mesh sleeve and the inner side of the shell, and a plurality of vertical sliding grooves slidably connected to the vertical guide columns are provided on the arc-shaped outer side edge of the annular support sleeve.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] (1) During operation, by providing a first filter, a second filter, a controller, a water inlet main pipe, a booster pump, a water inlet branch pipe 1, a water inlet branch pipe 2, a drainage main pipe, a drainage branch pipe 1, a drainage branch pipe 2, a concentrated water drainage pipe, a concentrated water drainage branch pipe 1 and a concentrated water drainage branch pipe 2, the backwashing and cleaning function can be realized. Through this design, a booster pump can be used to realize the filtering boosting and cleaning boosting functions;

[0019] (2) By providing an activated carbon pre-filter 1 and an activated carbon pre-filter 2, a pre-filtration function can be achieved, so that a part of impurities can be filtered in the early stage to prevent a large amount of impurities from entering the first filter and the second filter. By providing an air intake pipe 1, an air intake pipe 2 and an air pump, auxiliary pressure can be increased during backwashing, so that the water inside the first filter and the second filter can be emptied, so that the first cleaning component, the second cleaning component and the third cleaning component sink under the action of gravity. When the water is filled for the second time, the buoyancy is used to make the first cleaning component, the second cleaning component and the third cleaning component rise, thereby achieving two-way scraping;

[0020] (3) By setting a filter core composed of a top plate, a bottom plate, a water collecting pipe, a first filter component, a second filter component, a third filter component, a first cleaning component, a second cleaning component and a third cleaning component, a filtering function can be achieved. By setting a first filter component, a second filter component and a third filter component composed of a supporting mesh sleeve and a filter membrane, and arranging multiple layers of filter membranes at intervals, it is possible to achieve filtering while avoiding foreign particles being sandwiched between two layers of filter membranes, thereby facilitating the subsequent cleaning operation.

[0021] (4) By providing a first cleaning assembly, a second cleaning assembly and a third cleaning assembly consisting of an annular support sleeve, a floating ring, an inner support sleeve and an annular cleaning brush, the first cleaning assembly and the second cleaning assembly can be sunk and lifted by utilizing the effects of gravity and the buoyancy of water, thereby scraping the outer surface of the filter membrane during cleaning, thereby improving the cleaning effect of foreign particles and thereby increasing the service life of the filter membrane assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0023] In the attached picture:

[0024] Figure 1 It is a schematic diagram of the structure of the long-acting filtration membrane assembly that resists fouling and clogging of the present invention;

[0025] Figure 2 is a cross-sectional view of a first filter of the present invention;

[0026] Figure 3 This is an exploded view of the first filter of the present invention;

[0027] Figure 4 This is a schematic diagram of the base structure of the present invention;

[0028] Figure 5 This is one of the partial structural schematic diagrams of the filter element of the present invention;

[0029] Figure 6 This is the second schematic diagram of the local structure of the filter element of the present invention;

[0030] Figure 7 This is a schematic diagram of the structure of the first cleaning component of the present invention;

[0031] Figure 8 It is a partial structural schematic diagram of the first cleaning component of the present invention;

[0032] Fig. 9 It is a top cross-sectional view of the first filter assembly, the second filter assembly, the third filter assembly and the housing of the present invention;

[0033] In the figure: 1. first filter; 2. second filter; 3. controller; 4. water inlet main pipe; 5. booster pump; 6. water inlet branch pipe 1; 7. water inlet branch pipe 2; 8. drainage main pipe; 9. drainage branch pipe 1; 10. drainage branch pipe 2; 11. concentrated water drainage pipe; 12. concentrated water drainage branch pipe 1; 13. concentrated water drainage branch pipe 2; 14. activated carbon pre-filter 1; 15. activated carbon pre-filter 2; 16. air inlet pipe 1; 17. air inlet pipe 2; 18. air pump; 19. housing; 20. base; 21. filter element; 22. top plate; 23. Bottom plate; 24. Water collecting pipe; 25. First filter assembly; 26. Second filter assembly; 27. Third filter assembly; 28. First dirt cleaning assembly; 29. ​​Second dirt cleaning assembly; 30. Third dirt cleaning assembly; 31. Inner chamber; 32. Sealing ring; 33. Positioning sleeve one; 34. Positioning sleeve two; 35. Through hole; 36. Water-permeable hole; 37. Support mesh sleeve; 38. Filter membrane; 39. Annular support sleeve; 40. Floating ring; 41. Inner support sleeve; 42. Annular dirt cleaning brush; 43. Vertical guide column; 44. Vertical slide groove. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0035] Embodiment 1, by Figure 1 The present invention provides a long-lasting filtration membrane assembly that is resistant to fouling and clogging, comprising a first filter 1, a second filter 2, a controller 3, a water inlet main pipe 4, a booster pump 5, a water inlet branch pipe 1 6, a water inlet branch pipe 2 7, a drainage main pipe 8, a drainage branch pipe 1 9, a drainage branch pipe 2 10, a concentrated water drainage pipe 11, a concentrated water drainage branch pipe 1 12 and a concentrated water drainage branch pipe 2 13, wherein the booster pump 5 is connected to the water inlet main pipe 4, the water inlet branch pipe 1 6 is connected between the water inlet main pipe 4 and the first filter 1, the water inlet branch pipe 2 7 is connected between the water inlet main pipe 4 and the second filter 2, the drainage branch pipe 1 9 is connected between the drainage main pipe 8 and the first filter 1, the drainage branch pipe 2 10 is connected between the drainage main pipe 8 and the second filter 2, the concentrated water drainage branch pipe 1 12 is connected between the concentrated water drainage pipe 11 and the first filter 1, and the concentrated water drainage branch pipe 2 13 is connected between the concentrated water drainage pipe 11 and the second filter 2;

[0036] During filtration, water is inletted through the water inlet main pipe 4, pressure is increased through the booster pump 5, water is supplied to the first filter 1 and the second filter 2 through the water inlet branch pipe 1 6 and the water inlet branch pipe 2 7 respectively, filtration is achieved through the first filter 1 and the second filter 2, and the filtered water is discharged to the interior of the drainage main pipe 8 through the drainage branch pipe 1 9 and the drainage branch pipe 2 10. When cleaning the first filter 1, the valves on the water inlet branch pipe 1 6, the concentrated water drainage branch pipe 2 13 and the drainage main pipe 8 are closed, and the valves on the water inlet branch pipe 2 7 and the concentrated water drainage branch pipe 1 12 are opened. At this time, filtration is achieved through the second filter 2, and the filtered water enters the interior of the first filter 1 through the drainage branch pipe 1 9. , backwashing the first filter 1 is realized, and the concentrated water generated by the flushing enters the interior of the concentrated water drainage branch pipe 12, and then is discharged through the concentrated water drainage pipe 11. When cleaning the second filter 2, close the valves on the water inlet branch pipe 2 7, the concentrated water drainage branch pipe 12 and the drainage main pipe 8, and open the valves on the water inlet branch pipe 1 6 and the concentrated water drainage branch pipe 2 13. At this time, the filtering work is realized through the first filter 1, and the filtered water enters the interior of the second filter 2 through the drainage branch pipe 2 10, so as to realize backwashing of the second filter 2, and the concentrated water generated is discharged to the interior of the concentrated water drainage pipe 11 through the concentrated water drainage branch pipe 2 13, and then is discharged from the concentrated water drainage pipe 11;

[0037] An activated carbon pre-filter 14 is provided on the water inlet branch pipe 1 6, and an activated carbon pre-filter 2 15 is provided on the water inlet branch pipe 2 7;

[0038] The activated carbon pre-filter 14 and the activated carbon pre-filter 2 15 can pre-filter the incoming water, thereby filtering out a portion of impurities, preventing a large amount of impurities from entering the first filter 1 and the second filter 2, and extending the service life of the first filter 1 and the second filter 2;

[0039] An air intake pipe 16 is provided on one side of the drainage branch pipe 1 9, an air intake pipe 2 17 is provided on one side of the drainage branch pipe 2 10, and an air pump 18 is provided between the air intake pipe 1 16 and the air intake pipe 2 17;

[0040] During backwashing, the first filter 1 can be pressurized through the air pump 18 and the air inlet pipe 1 16 to facilitate the emptying of the water inside the first filter 1, and the second filter 2 can be pressurized through the air pump 18 and the air inlet pipe 2 17 to facilitate the emptying of the water inside the second filter 2;

[0041] Solenoid valves are provided on the water inlet branch pipe 1 6, the water inlet branch pipe 2 7, the drainage main pipe 8, the concentrate drainage branch pipe 1 12, the concentrate drainage branch pipe 2 13, the air intake pipe 1 16 and the air intake pipe 2 17, through which the on and off of the water inlet branch pipe 1 6, the water inlet branch pipe 2 7, the drainage main pipe 8, the concentrate drainage branch pipe 1 12, the concentrate drainage branch pipe 2 13, the air intake pipe 1 16 and the air intake pipe 2 17 can be controlled.

[0042] Embodiment 2, based on embodiment 1, Figures 1 to 9 It is shown that the first filter 1 and the second filter 2 are both composed of a housing 19, a base 20 and a filter core 21, the housing 19 is connected to the top of the base 20, and the filter core 21 is connected to the inside of the housing 19 and located at the top of the base 20;

[0043] The housing 19 and the base 20 can be used to install the filter element 21;

[0044] The filter element 21 is composed of a top plate 22, a bottom plate 23, a water collecting pipe 24, a first filter assembly 25, a second filter assembly 26, a third filter assembly 27, a first cleaning assembly 28, a second cleaning assembly 29 and a third cleaning assembly 30. The first filter assembly 25, the second filter assembly 26 and the third filter assembly 27 are all connected between the top plate 22 and the bottom plate 23. The second filter assembly 26 is sleeved on the first filter assembly 25, and the third filter assembly 27 is sleeved on the second filter assembly 26. An inner chamber 31 is formed between the first filter assembly 25 and the second filter assembly 26, between the second filter assembly 26 and the third filter assembly 27, and between the third filter assembly 27 and the housing 19. The first cleaning assembly 28 is located between the first filter assembly 25 and the second filter assembly 26, the second cleaning assembly 29 is located between the second filter assembly 26 and the third filter assembly 27, and the third cleaning assembly 30 is located between the third filter assembly 27 and the housing 19.

[0045] The first filter assembly 25, the second filter assembly 26 and the third filter assembly 27 realize triple filtration to improve the filtering effect. The filtered water enters the water collecting pipe 24 and is then discharged through the water collecting pipe 24. By setting the inner chamber 31, the first filter assembly 25, the second filter assembly 26 and the third filter assembly 27 can be prevented from being attached to each other, thereby preventing particulate impurities from being sandwiched between layers, so that particulate matter can be fully emptied during backwashing. The first cleaning assembly 28, the second cleaning assembly 29 and the third cleaning assembly 30 can respectively scrape the outer surfaces of the first filter assembly 25, the second filter assembly 26 and the third filter assembly 27, thereby further improving the drainage effect. In order to improve the dirt removal effect, during the dirt removal process, the water inside the first filter 1 or the second filter 2 is first drained. At this time, the first dirt removal component 28, the second dirt removal component 29 and the third dirt removal component 30 are lowered by their own gravity. During the lowering process, the first dirt removal operation can be performed on the outer surfaces of the first filter component 25, the second filter component 26 and the third filter component 27. Then, water is filled into the first filter 1 or the second filter 2, and the buoyancy of the water is used to drive the first dirt removal component 28, the second dirt removal component 29 and the third dirt removal component 30 to rise. The second dirt removal operation is performed during the rising process, thereby improving the dirt removal effect. The scraped impurities can be discharged by the backwashing water flow.

[0046] The housing 19 and the base 20 are threadedly connected, and a sealing ring 32 is provided inside the base 20 to improve the sealing performance of the connection;

[0047] A positioning sleeve 1 33 matching the filter element 21 is fixedly provided on the side of the top of the housing 19, and a positioning sleeve 2 34 matching the filter element 21 is fixedly provided on the side of the top of the base 20, which can position the filter element 21 and improve stability;

[0048] The top of the water collecting pipe 24 is inserted into the top plate 22 and fixedly connected to the top plate 22. A through hole 35 matching the drainage branch pipe 1 9 and the drainage branch pipe 2 10 is provided in the middle of the top of the water collecting pipe 24, so as to realize the installation and positioning of the drainage branch pipe 1 9 and the drainage branch pipe 2 10. The bottom of the water collecting pipe 24 is a closed structure, and a plurality of water permeable holes 36 are provided on the side of the water collecting pipe 24, so that the filtered water can enter the inside of the water collecting pipe 24.

[0049] The first filter assembly 25, the second filter assembly 26 and the third filter assembly 27 are all composed of a support mesh 37 and a filter membrane 38. The filter membrane 38 is fixedly connected to the outer surface of the support mesh 37. The support mesh 37 can be used to stably support the filter membrane 38.

[0050] The first cleaning assembly 28, the second cleaning assembly 29 and the third cleaning assembly 30 are all composed of an annular support sleeve 39, a floating ring 40, an inner support sleeve 41 and an annular cleaning brush 42. The floating ring 40 is fixedly connected to the inner surface of the annular support sleeve 39, the inner support sleeve 41 is fixedly connected to the inner surface of the floating ring 40, and the annular cleaning brush 42 is fixedly connected to the inner surface of the inner support sleeve 41. The annular support sleeve 39 supports the floating ring 40, the inner support sleeve 41 and the annular cleaning brush 42. The floating ring 40 can be lifted by the buoyancy of water, and the annular cleaning brush 42 can achieve a scraping operation.

[0051] A plurality of vertical guide posts 43 are fixedly arranged on the side edges of the support mesh sleeve 37 and the inner side edges of the housing 19, and a plurality of vertical slide grooves 44 slidably connected to the vertical guide posts 43 are provided on the arc-shaped outer side edges of the annular support sleeve 39;

[0052] The vertical guide column 43 and the vertical slide groove 44 limit the annular support sleeve 39 and improve the stability of the annular support sleeve 39.

[0053] During operation, by providing a first filter, a second filter, a controller, a water inlet main pipe, a booster pump, a water inlet branch pipe 1, a water inlet branch pipe 2, a drainage main pipe, a drainage branch pipe 1, a drainage branch pipe 2, a concentrated water drainage pipe, a concentrated water drainage branch pipe 1 and a concentrated water drainage branch pipe 2, a backwashing and cleaning function can be realized. Through this design, a booster pump can be used to achieve filtering boosting and cleaning boosting functions; by providing an activated carbon pre-filter 1 and an activated carbon pre-filter 2, a pre-filtration function can be achieved, so that a part of impurities can be filtered in the early stage to prevent a large amount of impurities from entering the first filter and the second filter. By providing an air intake pipe 1, an air intake pipe 2 and an air pump, auxiliary boosting can be performed during backwashing, so that the water inside the first filter and the second filter can be emptied, so that the first cleaning component, the second cleaning component and the third cleaning component sink under the action of gravity. When filled with water for the second time, the buoyancy is used to make the first cleaning component, the second cleaning component and the third cleaning component sink. The filter element comprises a top plate, a bottom plate, a water collecting pipe, a first filter element, a second filter element, a third filter element, a first filter element, a second filter element and a third filter element, so as to realize two-way scraping; by setting a filter core composed of a top plate, a bottom plate, a water collecting pipe, a first filter element, a second filter element, a third filter element, a first filter element, a second filter element and a third filter element, the filtering function can be realized; by setting a first filter element, a second filter element and a third filter element composed of a supporting mesh sleeve and a filter membrane, and arranging the multi-layer filter membranes at intervals, it is possible to avoid foreign particles being sandwiched between the two layers of filter membranes while realizing filtering, so as to facilitate the later cleaning operation; by setting a first filter element, a second filter element and a third filter element composed of an annular support sleeve, a floating ring, an inner support sleeve and an annular cleaning brush, it is possible to use the gravity and the buoyancy of water to realize sinking and lifting, so as to realize the scraping operation on the outer surface of the filter membrane during cleaning, thereby improving the cleaning effect of foreign particles and thus improving the service life of the filter membrane element.

Claims

1. A long-lasting filtration membrane assembly with anti-fouling and clogging resistance, comprising a first filter (1), a second filter (2), a controller (3), a water inlet main pipe (4), a booster pump (5), a first water inlet branch pipe (6), a second water inlet branch pipe (7), a drainage main pipe (8), a first drainage branch pipe (9), a second drainage branch pipe (10), a concentrated water drainage pipe (11), a first concentrated water drainage branch pipe (12) and a second concentrated water drainage branch pipe (13), characterized in that: The booster pump (5) is connected to the water inlet main pipe (4); the water inlet branch pipe 1 (6) is connected between the water inlet main pipe (4) and the first filter (1); the water inlet branch pipe 2 (7) is connected between the water inlet main pipe (4) and the second filter (2); the drainage branch pipe 1 (9) is connected between the drainage main pipe (8) and the first filter (1); the drainage branch pipe 2 (10) is connected between the drainage main pipe (8) and the second filter (2); the concentrated water drainage branch pipe 1 (12) is connected between the concentrated water drainage pipe (11) and the first filter (1); and the concentrated water drainage branch pipe 2 (13) is connected between the concentrated water drainage pipe (11) and the second filter (2); The first filter (1) and the second filter (2) are both composed of a housing (19), a base (20) and a filter core (21); the housing (19) is connected to the top of the base (20); the filter core (21) is connected to the inside of the housing (19) and is located at the top of the base (20); The filter element (21) is composed of a top plate (22), a bottom plate (23), a water collecting pipe (24), a first filter assembly (25), a second filter assembly (26), a third filter assembly (27), a first dirt cleaning assembly (28), a second dirt cleaning assembly (29) and a third dirt cleaning assembly (30). The first filter assembly (25), the second filter assembly (26) and the third filter assembly (27) are all connected between the top plate (22) and the bottom plate (23). The second filter assembly (26) is sleeved on the first filter assembly (25), and the third filter assembly (27) is sleeved on the second filter assembly (28). The filter assembly (26) forms an inner chamber (31) between the first filter assembly (25) and the second filter assembly (26), between the second filter assembly (26) and the third filter assembly (27), and between the third filter assembly (27) and the housing (19). The first dirt cleaning assembly (28) is located between the first filter assembly (25) and the second filter assembly (26), the second dirt cleaning assembly (29) is located between the second filter assembly (26) and the third filter assembly (27), and the third dirt cleaning assembly (30) is located between the third filter assembly (27) and the housing (19).

2. The long-lasting filtration membrane assembly with anti-fouling and anti-clogging properties according to claim 1, characterized in that: The water inlet branch pipe one (6) is provided with an activated carbon pre-filter one (14), and the water inlet branch pipe two (7) is provided with an activated carbon pre-filter two (15).

3. The long-lasting filtration membrane assembly with anti-fouling and anti-clogging properties according to claim 1, characterized in that: An air intake pipe 1 (16) is arranged on one side of the drainage branch pipe 1 (9), an air intake pipe 2 (17) is arranged on one side of the drainage branch pipe 2 (10), and an air pump (18) is arranged between the air intake pipe 1 (16) and the air intake pipe 2 (17).

4. The long-lasting filtration membrane assembly with anti-fouling and anti-clogging properties according to claim 1, characterized in that: Solenoid valves are provided on the water inlet branch pipe 1 (6), the water inlet branch pipe 2 (7), the drainage main pipe (8), the concentrated water drainage branch pipe 1 (12), the concentrated water drainage branch pipe 2 (13), the air inlet pipe 1 (16) and the air inlet pipe 2 (17).

5. The long-lasting filtration membrane assembly with anti-fouling and anti-clogging properties according to claim 1, characterized in that: The housing (19) and the base (20) are in a threaded connection structure, and a sealing ring (32) is provided inside the base (20).

6. The long-lasting filtration membrane assembly with anti-fouling and anti-clogging properties according to claim 1, characterized in that: A first positioning sleeve (33) matching the filter core (21) is fixedly disposed on the side edge of the top end of the housing (19), and a second positioning sleeve (34) matching the filter core (21) is fixedly disposed on the side edge of the top end of the base (20).

7. The long-lasting filtration membrane assembly with anti-fouling and anti-clogging properties according to claim 1, characterized in that: The top end of the water collecting pipe (24) is inserted into the top plate (22) and fixedly connected to the top plate (22). A through hole (35) matching the drainage branch pipe 1 (9) and the drainage branch pipe 2 (10) is provided in the middle position of the top end of the water collecting pipe (24). The bottom end of the water collecting pipe (24) is a closed structure. A plurality of water permeable holes (36) are provided on the side of the water collecting pipe (24).

8. The long-lasting filtration membrane assembly with anti-fouling and anti-clogging properties according to claim 1, characterized in that: The first filter assembly (25), the second filter assembly (26) and the third filter assembly (27) are all composed of a supporting mesh sleeve (37) and a filter membrane (38), and the filter membrane (38) is fixedly connected to the outer surface of the supporting mesh sleeve (37).

9. The long-lasting filtration membrane assembly with anti-fouling and anti-clogging properties according to claim 8, characterized in that: The first cleaning assembly (28), the second cleaning assembly (29) and the third cleaning assembly (30) are all composed of an annular support sleeve (39), a floating ring (40), an inner support sleeve (41) and an annular cleaning brush (42); the floating ring (40) is fixedly connected to the inner surface of the annular support sleeve (39), the inner support sleeve (41) is fixedly connected to the inner surface of the floating ring (40), and the annular cleaning brush (42) is fixedly connected to the inner surface of the inner support sleeve (41).

10. The long-lasting filtration membrane assembly with anti-fouling and anti-clogging properties according to claim 9, characterized in that: A plurality of vertical guide columns (43) are fixedly arranged on the side edges of the supporting mesh sleeve (37) and the inner side edges of the shell (19), and a plurality of vertical sliding grooves (44) slidably connected to the vertical guide columns (43) are provided on the arc-shaped outer side edge of the annular supporting sleeve (39).

Images