A spiral wound reverse osmosis system

Abstract

The present invention relates to the technical field of reverse osmosis purification, and particularly relates to a spiral wound reverse osmosis system, which includes a filter cartridge. An upper end cover is connected to the filter cartridge. An inlet water chamber, a concentrated water chamber and a clean water chamber are arranged in the upper end cover through a partition plate. The system further includes: an inlet water assembly, which includes a first inlet water mechanism and a second inlet water mechanism. The first inlet water mechanism is communicated with the inlet water chamber in the upper end cover and is used for introducing the sewage to be filtered into the filter cartridge. The second inlet water mechanism is connected to an external clean water source. In the present invention, the clean water chamber is blocked by a sliding sealing plug and a sealing block, and the blockage of the backwashing pipeline is released, so that when the inside of the filter cartridge is blocked and the internal water pressure of the clean water chamber drops, the inside of the filter cartridge can be automatically backwashed, improving the cleanliness inside the spiral wound reverse osmosis system and avoiding the trouble of shutting down and disassembling for replacement after the spiral wound reverse osmosis system has worked for a period of time.

Description

Technical Field

[0001] The present invention relates to the technical field of reverse osmosis purification, and particularly to a spiral wound reverse osmosis system. Background Art

[0002] The spiral wound reverse osmosis system is a technology widely used in water treatment and desalination. Its main principle is to remove dissolved solids, salts and other impurities in water through a reverse osmosis membrane. The raw water entering the device is sent into the membrane module by a pump. Under high pressure, water passes through the reverse osmosis membrane, and pure water permeates through the membrane into the fresh water outlet, while the dissolved salts and other impurities are retained on the other side of the membrane, forming concentrated water. The pure water is collected and discharged from the system, and the concentrated water is discharged through the concentrated water outlet or further treated to obtain pure water.

[0003] During the use process, it is found that large particles and salts in the sewage of the existing spiral wound reverse osmosis membrane are prone to form large particle adhesion on the outer wall of the osmosis membrane after a period of use, making the spiral wound reverse osmosis membrane prone to blockage. In order to solve the problem that the spiral wound reverse osmosis membrane is prone to blockage, the present application proposes a spiral wound reverse osmosis system. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems raised in the background art, and to propose a spiral wound reverse osmosis system.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A spiral wound reverse osmosis system includes a filter cylinder, an upper end cover is connected to the filter cylinder, and an inlet chamber, a concentrated water chamber and a clean water chamber are arranged in the upper end cover through a partition board. It further includes: an inlet assembly, the inlet assembly includes a first inlet mechanism and a second inlet mechanism, the first inlet mechanism is communicated with the inlet chamber in the upper end cover for introducing the sewage to be filtered into the filter cylinder, and the second inlet mechanism is connected to an external clean water source; a filtration assembly for performing multi-stage filtration on the water entering the inlet chamber; a backwashing assembly including a sliding seal plug connected in the upper end cover; when the multi-stage filtration effect of the filtration assembly decreases, the backwashing assembly drives the sliding seal plug to slide up and down to backwash the filtration assembly.

[0007] A further solution of the present invention is that the first inlet mechanism includes a first flange pipe joint connected to the upper end cover, and a sewage pipe is connected to the end of the first flange pipe joint away from the upper cover.

[0008] A further solution of the present invention is that the filtering component further includes a first spiral-wound reverse osmosis membrane and a second spiral-wound reverse osmosis membrane connected to the lower side of the upper end cover. The first spiral-wound reverse osmosis membrane is arranged outside the second spiral-wound reverse osmosis membrane. The second spiral-wound reverse osmosis membrane and the first spiral-wound reverse osmosis membrane respectively partition the filter cartridge into a sewage chamber, a concentrated water chamber and a clean water chamber. The sewage chamber is communicated with the inlet chamber, the concentrated water chamber is communicated with the concentrated water chamber, and the clean water chamber is communicated with the clean water chamber.

[0009] A further solution of the present invention is that the backwashing component further includes a communication hole provided on the innermost partition plate of the upper end cover. The communication hole penetrates through the concentrated water chamber and is communicated with the clean water chamber. A T-shaped through hole communicating up and down is provided on the sliding sealing plug, and a sealing block is slidably connected in the horizontal end hole of the T-shaped through hole.

[0010] A further solution of the present invention is that the resetting component includes a first elastic member connected between the upper end cover and the clean water chamber. A blocking ring is arranged in the clean water chamber. One end of the first elastic member is connected to the blocking ring, and the other end of the first elastic member is connected to one end of the sliding sealing plug. A second elastic member is arranged in the T-shaped through hole. One end of the second elastic member is connected to the inner wall of the sliding sealing plug, and the other end of the second elastic member is connected to one end of the sealing block located in the T-shaped through hole.

[0011] A further solution of the present invention is that one end of the filter cartridge away from the upper end cover is connected with a lower end cover. A end cover plate is arranged at one end of the lower end cover close to the filter cartridge. A lapping portion is arranged on the end cover plate. The lapping portion is respectively adapted to abut against the first spiral-wound reverse osmosis membrane and the second spiral-wound reverse osmosis membrane. The end cover plate is provided with a partitioning member, which can respectively form a communicating space between the sewage chamber and the concentrated water chamber and the lower end cover. The space communicated with the sewage chamber is communicated with the external sewage circulation and collection treatment chamber through a first flange interface, and the space communicated with the concentrated water chamber is communicated with the external concentrated water recirculation treatment chamber through a second flange interface.

[0012] A further solution of the present invention is that a cleaning component is arranged in the filter cartridge. The cleaning component is used for cleaning large granular impurities adhering to the upper inner walls of the sewage chamber and the concentrated water chamber.

[0013] A further solution of the present invention is that the cleaning component includes a rotating shaft connected to the end cover plate. A driving blade is arranged on the upper side of the rotating shaft. The driving blade is adapted to the lower end of the T-shaped through hole on the sliding sealing plug. The cleaning component further includes a first spiral scraper and a second spiral scraper connected to the end cover plate.

[0014] A further solution of the present invention is that the orifice of the horizontal end of the T-shaped through hole can be adapted and aligned with the communication hole when the sliding sealing plug slides up and down.

[0015] A further solution of the present invention is that the first spiral scraper is adapted to the inner wall of the sewage chamber. The two sides of the first spiral scraper are respectively in contact with the inner wall of the filter cartridge and the outer wall of the first spiral reverse osmosis membrane. The second spiral scraper is adapted to the inner wall of the concentrated water chamber. The two sides of the second spiral scraper are respectively in contact with the inner wall of the first spiral reverse osmosis membrane and the outer wall of the second spiral reverse osmosis membrane.

[0016] Compared with the prior art, a spiral reverse osmosis system provided by the present invention has the following beneficial effects.

[0017] 1. By using the sliding seal plug and the seal block to block the clean water chamber and release the blockage of the backwash pipeline, the filter cartridge can automatically backwash the inside of the filter cartridge when the internal water pressure in the clean water chamber drops due to blockage, improving the cleanliness inside the spiral reverse osmosis system and avoiding the trouble of shutting down and disassembling for replacement after the spiral reverse osmosis system has worked for a period of time.

[0018] 2. By driving the blades to drive the first spiral scraper and the second spiral scraper to automatically scrape the particulate impurities adhering to the inner wall of the filter cartridge, the outer wall of the first spiral reverse osmosis membrane, the inner wall of the first spiral reverse osmosis membrane, and the outer wall of the second spiral reverse osmosis membrane, the efficiency of the osmosis operation of the spiral reverse osmosis system is ensured, the service life of the equipment is prolonged, and workers are prevented from frequently disassembling the machine to replace the new spiral reverse osmosis membrane. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the reverse osmosis system of the present invention.

[0020] Figure 2 It is a schematic structural diagram of the filter cartridge of the present invention.

[0021] Figure 3 It is a schematic structural diagram of the upper end cap of the present invention.

[0022] Figure 4 It is a schematic diagram of the first sectional structure of the filter cartridge of the present invention and the flow of the inlet liquid.

[0023] Figure 5 It is a schematic diagram of the filter cartridge and the cleaning assembly of the present invention.

[0024] Figure 6 It is a schematic structural diagram of the cleaning assembly of the present invention.

[0025] Figure 7 It is a schematic sectional structure diagram of the connection between the cleaning assembly and the lower end cap of the present invention.

[0026] Figure 8 It is a schematic sectional structure diagram of the upper end cap of the present invention.

[0027] Figure 9Exploded structure schematic diagram of the upper end cover of the present invention.

[0028] Reference numerals:

[0029] 10. Filter cartridge; 101. Sewage chamber; 102. Concentrated water chamber; 103. Clean water chamber; 11. Upper end cover; 1101. Communication hole; 111. Water inlet chamber; 112. Concentrated water chamber; 113. Clean water chamber; 12. First elastic member; 13. Second elastic member; 14. Lower end cover; 141. End cover plate; 142. First flange interface; 143. Second flange interface; 20. Water inlet assembly; 21. First water inlet mechanism; 211. First flange pipe joint; 212. Sewage pipe; 22. Second water inlet mechanism; 30. Filtration assembly; 31. First spiral wound reverse osmosis membrane; 32. Second spiral wound reverse osmosis membrane; 40. Backwashing assembly; 41. Sliding seal plug; 411. T-shaped through hole; 42. Sealing block; 50. Cleaning assembly; 51. Rotating shaft; 511. Driving blade; 52. First spiral scraper; 53. Second spiral scraper. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0031] Embodiment 1

[0032] When using a spiral wound reverse osmosis membrane to filter sewage, due to the presence of large particulate impurities with adhesiveness in the sewage, after the spiral wound reverse osmosis membrane works for a period of time, the large particulate impurities block in the equipment, affecting the working efficiency of the equipment. To solve the above problems, this embodiment is specifically invented.

[0033] Please refer to Figures 1 to 9 , in the attached drawings, the arrow direction is the liquid flow direction. A spiral wound reverse osmosis system according to the present invention includes a filter cartridge 10, and further includes a water inlet assembly 20, a filtration assembly 30, and a backwashing assembly 40. The filter cartridge 10 is connected with an upper end cover 11. Inside the upper end cover 11, a water inlet chamber 111, a concentrated water chamber 112, and a clean water chamber 113 are arranged through a partition; in combination with Figure 5 , the water inlet assembly 20, the water inlet assembly 20 includes a first water inlet mechanism 21 and a second water inlet mechanism 22. The first water inlet mechanism 21 is communicated with the water inlet chamber 111 in the upper end cover 11 for introducing the sewage to be filtered into the filter cartridge 10. The second water inlet mechanism 22 is connected with an external clean water source; it should be noted that the external clean water source contains a certain water pressure and the water pressure is less than the water pressure inside the sewage source connected to the external sewage pipe 212. The filtration assembly 30 is used for multi-stage filtration of the water entering the water inlet chamber 111.

[0034] The backwashing assembly 40 includes a sliding sealing plug 41 connected to the upper end cover 11. When too many granular impurities adhere to the outer wall of the filter assembly 30 and affect reverse osmosis, the sliding sealing plug 41 slides up and down to seal the clean water chamber 113, and at the same time, the blockage of the externally connected clean water source is released, so that the external clean water can be backwashed into the water inlet chamber 111 through the filter assembly 30 at a certain pressure, so as to backwash the granular impurities adhered to the outside of the filter assembly 30.

[0035] In this embodiment, the filter cartridge 10 is connected to the external sewage pipe 212, the concentrated water pipe, the clean water pipe and the backwash pipe respectively. In the initial state, the external sewage enters the water inlet chamber 111 after passing through the first flange pipe joint 211, and is filtered through the first roll reverse osmosis membrane 31 after passing through the first water inlet mechanism 21. The first roll reverse osmosis membrane 31 filters the sewage to form concentrated water with a high salt content. The concentrated water enters the clean water chamber 113 through the second roll reverse osmosis membrane 32 and the second water inlet mechanism 22. The concentrated water is then discharged out of the equipment for other uses, and the filtered concentrated water is reprocessed in a pipe connecting the concentrated water chamber 112 and the outside. When the filter cartridge 10 is blocked after working for too long, the water pressure in the concentrated water chamber 112 and the clean water chamber 113 is reduced, and the water pressure force on the lower side of the sliding sealing plug 41 is reduced. The sliding sealing plug 41 is lowered, so that the water in the backwashing pipe enters the clean water chamber 113 at a certain pressure, and rushes out from the rolled reverse osmosis membrane in the opposite direction to backwash the first water inlet mechanism 21 and the second water inlet mechanism 22.

[0036] See also Figure 1 The first water inlet mechanism 21 includes a first flange pipe joint 211 connected to the upper end cover 11, and one end of the first flange pipe joint 211 away from the upper end cover 11 is connected to the sewage pipe 212 through a flange, wherein the sewage pipe 212 enters the water inlet chamber 111 with a certain water pressure under the action of the pressure pump, and then enters the filter cartridge 10 for osmotic filtration treatment.

[0037] See also Figure 4 and Figure 5, the filtering component 30 further includes a first spiral reverse osmosis membrane 31 and a second spiral reverse osmosis membrane 32 connected to the lower side of the upper end cover 11. The first spiral reverse osmosis membrane 31 is arranged outside the second spiral reverse osmosis membrane 32. The second spiral reverse osmosis membrane 32 and the first spiral reverse osmosis membrane 31 respectively divide the filter cartridge 10 into a sewage chamber 101, a concentrated water chamber 102, and a clean water chamber 103. The sewage chamber 101 communicates with the water inlet chamber 111, the concentrated water chamber 102 communicates with the concentrated water chamber 112, and the clean water chamber 103 communicates with the clean water chamber 113. When filtering sewage, the sewage enters the sewage chamber 101 through the flange interface. Under the action of the internal water pressure, the water in the sewage chamber 101 is preliminarily filtered through the first spiral reverse osmosis membrane 31 and enters the concentrated water chamber 103. Due to the water pressure difference between the concentrated water chamber 102 and the clean water chamber 103, the water pressure in the concentrated water chamber 102 is higher than that in the clean water chamber 103, so that the water in the concentrated water chamber 102 further penetrates into the clean water chamber 103 under the action of the internal water pressure, and then the collected clean water is collected and recycled, realizing the recycling of water, saving water, and avoiding water waste.

[0038] Please refer to Figure 4 and Figure 5 , the backwashing component 40 further includes a communication hole 1101 arranged on the innermost partition of the upper end cover 11. The communication hole 1101 penetrates through the concentrated water chamber 112 and communicates with the clean water chamber 113. A vertically communicating T-shaped through hole 411 is formed in the sliding seal plug 41. When the sliding seal plug 41 slides up and down, the orifice of the horizontal end of the T-shaped through hole 411 can be adapted and aligned with the communication hole 1101. A sealing block 42 is slidably connected in the horizontal end hole of the T-shaped through hole 411. The sealing block 42 is connected to the sliding seal plug 41 through a reset component. The reset component includes a first elastic member 12 connected between the upper end cover 11 and the clean water chamber 113. A blocking ring is arranged in the clean water chamber 113. One end of the first elastic member 12 is connected to the blocking ring, and the other end of the first elastic member 12 is connected to one end of the sliding seal plug 41. A second elastic member 13 is arranged in the horizontal section of the T-shaped through hole 411. One end of the second elastic member 13 is connected to the inner wall of the sliding seal plug 41, and the other end of the second elastic member 13 is connected to one end of the sealing block 42 located in the T-shaped through hole 411. The first elastic member 12 and the second elastic member 13 are preferably springs in this solution.

[0039] During use, when the filter cartridge 10 becomes blocked inside after working for a period of time, the water pressure in the concentrated water chamber 112 and the clean water chamber 113 decreases, and the acting force of the first elastic member 12 and the water pressure in the clean water chamber 113 on the sliding seal plug 41 decreases. Since the clean water chamber 113 is connected to the external backwash pipeline, the backwash clean water pressure overcomes the elastic force of the first elastic member 12 and the water pressure in the clean water chamber 113 to push the sliding seal plug 41 to slide downward. After the sliding seal plug 41 slides downward by a certain distance, the horizontal section of the T-shaped through hole 411 is aligned with the communication hole 1101. Combining Figure 3 , the second elastic member 13 drives the sealing block 42 to slide outward to be adapted to the communication hole 1101, blocking the clean water chamber 113. At this time, it is connected to the clean water chamber 113 through the backwash pipeline, and the water in the backwash pipeline enters the clean water chamber 113 at a certain pressure, flushing out from the reverse side of the spiral wound reverse osmosis membrane to perform backwashing on the first water inlet mechanism 21 and the second water inlet mechanism 22, automatically backwashing the second spiral wound reverse osmosis membrane 32 and the first spiral wound reverse osmosis membrane 31. In different embodiments, the first elastic member 12 and the second elastic member 13 are preferably springs. It should be specifically noted that the part of the sealing block 42 in contact with the horizontal section of the T-shaped through hole 411 is an inclined slope, which is convenient for the sealing block 42 to push back the second elastic member 13 to reset when the water pressure in the spiral wound clean water chamber 113 increases. At this time, the sealing block 42 releases the blockage of the clean water chamber 113, and at this time, it is blocked from the clean water chamber 113 through the backwash pipeline.

[0040] Please refer to Figure 4 , one end of the filter cartridge 10 away from the upper end cover 11 is connected with a lower end cover 14. The lower end cover 14 is connected to the filter cartridge 10 by threads. One end of the lower end cover 14 close to the filter cartridge 10 is provided with an end cover plate 141. The end cover plate 141 is provided with a lapping portion, and the lapping portion is respectively adapted to and abuts against the first spiral wound reverse osmosis membrane 31 and the second spiral wound reverse osmosis membrane 32. The end cover plate 141 is provided with a partition member, which can respectively form a communicating space between the sewage chamber 101 and the concentrated water chamber 102 and the lower end cover 14. The space communicated with the sewage chamber 101 is communicated with the external sewage circulation and collection treatment chamber through the first flange interface 142, and the space communicated with the concentrated water chamber 102 is communicated with the external concentrated water recirculation treatment chamber through the second flange interface 143. During backwashing, the first flange interface 142 and the second flange interface 143 on the lower end cover 14 are opened under the control of the solenoid valve to discharge the turbid liquid after backwashing outside the filter cartridge 10 for circular reprocessing.

[0041] In summary, by adding the blockage and unblocking of the clean water chamber 113 by the sliding seal plug 41 and the sealing block 42 and the backwash pipeline, when the output water pressure decreases due to blockage inside the filter cartridge, the inside of the filter cartridge 10 is automatically backwashed, ensuring the normal progress of the reverse osmosis work.

[0042] Embodiment 2

[0043] During the use of the above embodiments, the inventor found that due to the presence of some sticky particles in the sewage, some impurity particles after backwashing still adhered to the inner wall, and quickly blocked the permeable membrane again in a short time when passing through the permeable filtration tank, affecting the operation of the spiral wound reverse osmosis system. To solve the above problems, we further improved the above embodiments.

[0044] Please refer to Figures 6 to 9 , a cleaning assembly 50 is arranged inside the filter cartridge 10. The cleaning assembly 50 is used to clean the large particulate impurities adhering to the upper inner walls of the sewage chamber 101 and the concentrated water chamber 102. The cleaning assembly 50 includes a rotating shaft 51 connected to the end cover plate 141. A driving blade 511 is arranged on the upper side of the rotating shaft 51. The driving blade 511 is in contact with the lower hole wall of the T-shaped through hole 411 on the sliding seal plug 41. The cleaning assembly 50 further includes a first spiral scraper 52 and a second spiral scraper 53 connected to the end cover plate 141. The first spiral scraper 52 is adapted to the inner wall of the sewage chamber 101. Both sides of the first spiral scraper 52 are in contact with the inner wall of the filter cartridge 10 and the outer wall of the first spiral wound reverse osmosis membrane 31 respectively. The second spiral scraper 53 is adapted to the inner wall of the concentrated water chamber 102. Both sides of the second spiral scraper 53 are in contact with the inner wall of the first spiral wound reverse osmosis membrane 31 and the outer wall of the second spiral wound reverse osmosis membrane 32 respectively.

[0045] When the output water pressure of the spiral wound reverse osmosis system decreases, the device starts the backwashing operation. The backwashing clean water pressure overcomes the water pressure in the first elastic member 12 and the clean water chamber 113 to drive the seal plug 41 to slide downward, so that the sliding seal plug 41 blocks the pipeline of the clean water chamber 113. At the same time, the second elastic member 13 drives the seal block 42 to slide outward to release the blockage of the backwashing clean water pipeline. The backwashing clean water is in contact with the driving blade 511, driving the driving blade 511 to rotate. The driving blade 511 drives the rotating shaft 51 to rotate. When the rotating shaft 51 rotates, the end cover plate 141 rotates to drive the first spiral scraper 52 and the second spiral scraper 53 to rotate to backwash the inner wall of the filter cartridge 10, the outer wall of the first spiral wound reverse osmosis membrane 31, the inner wall of the first spiral wound reverse osmosis membrane 31, and the outer wall of the second spiral wound reverse osmosis membrane 32. The turbid liquid after backwashing is discharged through the first flange interface 142 and the second flange interface 143 on the lower end cover 14, ensuring the cleanliness inside the filter cartridge 10.

[0046] In summary, through the rotation of the added first spiral scraper 52 and second spiral scraper 53, the particulate impurities adhering inside the filter cartridge 10 are automatically scraped during backwashing, avoiding the problem that large particulate impurities still adhere inside the filter cartridge 10 and quickly block the spiral wound reverse osmosis membrane during backwashing.

[0047] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, shall be covered by the protection scope of the present invention.

Claims

1. A roll-type reverse osmosis system, comprising a filter cartridge (10), wherein the filter cartridge (10) is connected to an upper end cover (11), wherein a water inlet chamber (111), a concentrated water chamber (112) and a clean water chamber (113) are arranged in the upper end cover (11) via a partition, wherein: Also includes: A water inlet assembly (20), the water inlet assembly (20) comprising a first water inlet mechanism (21) and a second water inlet mechanism (22), the first water inlet mechanism (21) being in communication with a water inlet chamber (111) in the upper end cover (11) and being used for passing sewage to be filtered into the filter cartridge (10), the second water inlet mechanism (22) being connected to an external clean water source, the external clean water source providing external clean water and water pressure during backwashing; A filter assembly (30), the filter assembly (30) being used to perform multi-stage filtration on water entering the water inlet chamber (111); A backwash assembly (40) comprising a sliding sealing plug (41) connected to the upper end cover (11); When the multi-stage filtering effect of the filter assembly (30) decreases, the backwash assembly (40) drives the sliding sealing plug (41) to slide up and down to backwash the filter assembly (30); The filter assembly (30) further comprises a first roll-type reverse osmosis membrane (31) and a second roll-type reverse osmosis membrane (32) connected to the lower side of the upper end cover (11); the first roll-type reverse osmosis membrane (31) is arranged outside the second roll-type reverse osmosis membrane (32); the second roll-type reverse osmosis membrane (32) and the first roll-type reverse osmosis membrane (31) respectively separate the filter cartridge (10) into a sewage chamber (101), a concentrated water chamber (102) and a clean water chamber (103); the sewage chamber (101) is in communication with the water inlet chamber (111); the concentrated water chamber (102) is in communication with the concentrated water chamber (112); and the clean water chamber (103) is in communication with the clean water chamber (113); The backwash assembly (40) further comprises a communication hole (1101) provided on an inner partition of the upper end cover (11), the communication hole (1101) penetrating the concentrated water chamber (112) and being in communication with the clean water chamber (113); the sliding sealing plug (41) is provided with a T-shaped through hole (411) communicating with each other from top to bottom; a sealing block (42) is slidably connected in a horizontal end hole of the T-shaped through hole (411); the sealing block (42) is connected to the sliding sealing plug (41) via a reset component; The end of the filter cartridge (10) away from the upper end cover (11) is connected to the lower end cover (14); the end of the lower end cover (14) close to the filter cartridge (10) is provided with an end cover plate (141); the end cover plate (141) is provided with an overlap portion, the overlap portion is respectively matched with and abutted against the first roll-type reverse osmosis membrane (31) and the second roll-type reverse osmosis membrane (32); the end cover plate (141) is provided with a partition, so that the sewage chamber (101) and the concentrated water chamber (102) can form a space connected with the lower end cover (14); the space connected with the sewage chamber (101) is connected with an external sewage circulation collection and treatment chamber through a first flange interface (142); and the space connected with the concentrated water chamber (102) is connected with an external concentrated water recycling treatment chamber through a second flange interface (143); A cleaning assembly (50) is arranged in the filter cartridge (10), and the cleaning assembly (50) is used to clean large granular impurities adhering to the inner walls of the sewage chamber (101) and the concentrated water chamber (102); The cleaning assembly (50) comprises a rotating shaft (51) connected to the end cover plate (141); a driving blade (511) is arranged on the upper side of the rotating shaft (51); the driving blade (511) is in contact with the lower end hole wall of the T-shaped through hole (411) on the sliding sealing plug (41); and the cleaning assembly (50) further comprises a first spiral scraper (52) and a second spiral scraper (53) connected to the end cover plate (141).

2. A roll-type reverse osmosis system according to claim 1, characterized in that: The first water inlet mechanism (21) comprises a first flange pipe joint (211) connected to the upper end cover (11), and an end of the first flange pipe joint (211) away from the upper end cover (11) is connected to a sewage pipe (212).

3. A roll-type reverse osmosis system according to claim 1, characterized in that: The reset component comprises a first elastic member (12) connected to the upper end cover (11) and the clean water chamber (113); a blocking ring is arranged in the clean water chamber (113); one end of the first elastic member (12) is connected to the blocking ring; the other end of the first elastic member (12) is connected to one end of the sliding sealing plug (41); a second elastic member (13) is arranged in the T-shaped through hole (411); one end of the second elastic member (13) is connected to the inner wall of the sliding sealing plug (41); the other end of the second elastic member (13) is connected to one end of the sealing block (42) located in the T-shaped through hole (411).

4. A roll-type reverse osmosis system according to claim 1, characterized in that: When the sliding sealing plug (41) slides up and down, the opening at the horizontal end of the T-shaped through hole (411) can be adapted and aligned with the connecting hole (1101).

5. A roll-type reverse osmosis system according to claim 4, characterized in that: The first spiral scraper (52) is matched with the inner wall of the sewage chamber (101), and the two sides of the first spiral scraper (52) respectively contact the inner wall of the filter cartridge (10) and the outer wall of the first spiral reverse osmosis membrane (31). The second spiral scraper (53) is matched with the inner wall of the concentrated water chamber (102), and the two sides of the second spiral scraper (53) respectively contact the inner wall of the first spiral reverse osmosis membrane (31) and the outer wall of the second spiral reverse osmosis membrane (32).

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