Roll type reverse osmosis system

Abstract

The invention relates to the technical field of reverse osmosis purification, in particular to a roll-type reverse osmosis system which comprises a filter cartridge, an upper end cover is connected to the filter cartridge, a water inlet chamber, a concentrated water chamber and a clear water chamber are arranged in the upper end cover through partition plates, the roll-type reverse osmosis system further comprises a water inlet assembly and a water outlet assembly, the water inlet assembly comprises a first water inlet mechanism and a second water inlet mechanism, the first water inlet mechanism is communicated with the water inlet cavity in the upper end cover and is used for introducing sewage to be filtered into the filter cartridge, and the second water inlet mechanism is connected with an external purified water source. According to the invention, the clean water chamber is blocked and the backwashing pipeline is unblocked by sliding the sealing plug and the sealing fixture block, so that the interior of the filter cartridge can be automatically backwashed when the interior of the filter cartridge is blocked and the water pressure in the clean water chamber is reduced, and the cleanliness of the interior of the roll-type reverse osmosis system is improved; and the trouble that the roll-type reverse osmosis system needs to be shut down for disassembly and replacement after working for a period of time is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of reverse osmosis purification, in particular to a roll-type reverse osmosis system. Background Art

[0002] The spiral 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 the reverse osmosis membrane. The raw water entering the equipment is pumped into the membrane assembly. The water passes through the reverse osmosis membrane under high pressure. Pure water penetrates the membrane and enters the fresh water port, while dissolved salts and other impurities are retained on the other side of the membrane to form concentrated water. The pure water is collected and discharged from the system, and the concentrated water is discharged through the concentrated water port or further processed to obtain pure water.

[0003] During use, it was found that after the existing roll-up reverse osmosis system has been used for a period of time, large particles and salts in the wastewater of the roll-up reverse osmosis membrane are easily adhered to the outer wall of the osmosis membrane, making the roll-up reverse osmosis membrane easily blocked. In order to solve the problem of easy blockage of the roll-up reverse osmosis membrane, the present application proposes a roll-up reverse osmosis system. Summary of the invention

[0004] The purpose of the present invention is to solve the problems raised in the background technology and to propose a roll-type reverse osmosis system.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A roll-type reverse osmosis system comprises a filter cartridge, an upper end cover is connected to the filter cartridge, a water inlet chamber, a concentrated water chamber and a clean water chamber are arranged in the upper end cover through a partition, and also comprises: a water inlet assembly, the water inlet assembly comprises a first water inlet mechanism and a second water inlet mechanism, the first water inlet mechanism is connected to the water inlet chamber in the upper end cover, and is used to pass the sewage to be filtered into the filter cartridge, and the second water inlet mechanism is connected to an external clean water source; a filter assembly, the filter assembly is used to perform multi-stage filtration on the water entering the water inlet chamber; a backwash assembly, comprising a sliding sealing plug connected to the upper end cover; when the multi-stage filtration effect of the filter assembly decreases, the filter assembly is backwashed by driving the sliding sealing plug to slide up and down through the backwash assembly.

[0006] A further solution of the present invention is that the first water inlet mechanism comprises a first flange pipe joint connected to the upper end cover, and an end of the first flange pipe joint away from the upper cover is connected to a sewage pipe.

[0007] A further solution of the present invention is that the filter assembly also includes a first roll reverse osmosis membrane and a second roll reverse osmosis membrane connected to the lower side of the upper end cover, the first roll reverse osmosis membrane is arranged on the outside of the second roll reverse osmosis membrane, the second roll reverse osmosis membrane and the first roll reverse osmosis membrane respectively block the filter cartridge into a sewage chamber, a concentrated water chamber and a clean water chamber, the sewage chamber is connected to the water inlet chamber, the concentrated water chamber is connected to the concentrated water chamber, and the clean water chamber is connected to the clean water chamber.

[0008] A further solution of the present invention is that the backwash assembly also includes a connecting hole arranged on the innermost partition of the upper end cover, the connecting hole penetrates the concentrated water chamber and is connected with the clean water chamber, the sliding sealing plug is provided with a T-shaped through hole connected up and down, and a sealing block is slidably connected in the horizontal end hole of the T-shaped through hole.

[0009] A further solution of the present invention is that the reset 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, 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.

[0010] A further solution of the present invention is that the end of the filter cartridge away from the upper end cover is connected to the lower end cover, and the end of the lower end cover close to the filter cartridge is provided with an end cover plate, and the end cover plate is provided with an overlapping portion, and the overlapping portion is respectively adapted and abutted against the first roll reverse osmosis membrane and the second roll reverse osmosis membrane, and the end cover plate is provided with a partition, which can enable the sewage chamber and the concentrated water chamber to form a space connected with the lower end cover respectively, and the space connected with the sewage chamber is connected with the external sewage circulation collection and treatment chamber through the first flange interface, and the space connected with the concentrated water chamber is connected with the external concentrated water recycling treatment chamber through the second flange interface.

[0011] A further solution of the present invention is that a cleaning assembly is provided in the filter cartridge, and the cleaning assembly is used to clean large granular impurities adhering to the inner walls of the sewage chamber and the concentrated water chamber.

[0012] A further solution of the present invention is that the cleaning assembly 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, and the cleaning assembly also includes a first spiral scraper and a second spiral scraper connected to the end cover plate.

[0013] A further solution of the present invention is that the opening at the horizontal end of the T-shaped through hole can be adapted and aligned with the connecting hole when the sliding sealing plug slides up and down.

[0014] A further solution of the present invention is that the first spiral scraper is adapted to the inner wall of the sewage chamber, and the two sides of the first spiral scraper respectively conflict with the inner wall of the filter cartridge and the outer wall of the first roll-type reverse osmosis membrane, and the second spiral scraper is adapted to the inner wall of the concentrated water chamber, and the two sides of the second spiral scraper respectively conflict with the inner wall of the first roll-type reverse osmosis membrane and the outer wall of the second roll-type reverse osmosis membrane.

[0015] Compared with the prior art, the roll-type reverse osmosis system provided by the present invention has the following beneficial effects.

[0016] 1. The present invention seals the clean water chamber and unblocks the backwashing pipe by sliding the sealing plug and the sealing block, so that the filter cartridge can automatically backwash the inside of the filter cartridge when the water pressure inside the clean water chamber decreases when the filter cartridge is blocked, thereby improving the cleanliness of the inside of the roll-type reverse osmosis system and avoiding the trouble of stopping the roll-type reverse osmosis system for disassembly and replacement after working for a period of time.

[0017] 2. The present invention drives the first spiral scraper and the second spiral scraper by driving blades to automatically scrape off the particulate impurities adhered to the inner wall of the filter cartridge and the outer wall of the first roll-type reverse osmosis membrane, the inner wall of the first roll-type reverse osmosis membrane and the outer wall of the second roll-type reverse osmosis membrane, thereby ensuring the osmosis efficiency of the roll-type reverse osmosis system, increasing the service life of the equipment, and avoiding workers from frequently dismantling the machine to replace new roll-type reverse osmosis membranes. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the reverse osmosis system of the present invention.

[0019] Figure 2 It is a schematic diagram of the filter cartridge structure of the present invention.

[0020] Figure 3 It is a schematic diagram of the upper end cover structure of the present invention.

[0021] Figure 4 It is a schematic diagram of the first cross-sectional structure of the filter cartridge of the present invention and the flow of incoming liquid.

[0022] Figure 5 It is a schematic diagram of the filter cartridge and cleaning assembly of the present invention.

[0023] Figure 6 It is a schematic diagram of the cleaning component structure of the present invention.

[0024] Figure 7 It is a schematic diagram of the cross-sectional structure of the connection between the cleaning component and the lower end cover of the present invention.

[0025] Figure 8 It is a schematic diagram of the cross-sectional structure of the upper end cover of the present invention.

[0026] Fig. 9It is a schematic diagram of the explosion structure of the upper end cover of the present invention.

[0027] Reference numerals: 10. Filter cartridge; 101. Sewage chamber; 102. Concentrate chamber; 103. Clean water chamber; 11. Upper end cover; 1101. Communication hole; 111. Water inlet chamber; 112. Concentrate 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 machine Structure; 211, first flange pipe joint; 212, sewage pipe; 22, second water inlet mechanism; 30, filter assembly; 31, first roll-type reverse osmosis membrane; 32, second roll-type reverse osmosis membrane; 40, backwash assembly; 41, sliding sealing 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 DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely 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.

[0029] Embodiment 1 When using a roll-type reverse osmosis membrane to filter sewage, due to the presence of large, sticky impurities in the sewage, the roll-type reverse osmosis membrane will be clogged in the equipment after working for a period of time, affecting the efficiency of the equipment. This embodiment is specially invented to solve the above problem.

[0030] See also Figures 1 to 9 The arrow direction in the attached figure is the direction of liquid flow. The roll-type reverse osmosis system of the present invention comprises a filter cartridge 10, a water inlet assembly 20, a filter assembly 30 and a backwash assembly 40. The filter cartridge 10 is connected to an upper end cover 11, and a water inlet chamber 111, a concentrated water chamber 112 and a clean water chamber 113 are arranged in the upper end cover 11 through a partition. Figure 5 , 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 connected to the water inlet chamber 111 in the upper end cover 11, and is used to pass the sewage to be filtered into the filter cartridge 10, and the second water inlet mechanism 22 is connected to an external purified water source; it should be noted that the external purified 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, and the filtering assembly 30 is used to perform multi-stage filtration on the water entering the water inlet chamber 111.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] See also Figure 4 and Figure 5The filter assembly 30 also includes a first roll reverse osmosis membrane 31 and a second roll reverse osmosis membrane 32 connected to the lower side of the upper end cover 11, the first roll reverse osmosis membrane 31 is arranged on the outer side of the second roll reverse osmosis membrane 32, the second roll reverse osmosis membrane 32 and the first roll reverse osmosis membrane 31 respectively block 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 connected to the water inlet chamber 111, the concentrated water chamber 102 is connected to the concentrated water chamber 112, and the clean water chamber 103 is connected to the clean water chamber 113; when the sewage is filtered, the filter cartridge 10 is separated into a sewage chamber 101, a concentrated water chamber 102 and a clean water chamber 103. During filtration, sewage enters sewage chamber 101 through flange interface. Under the action of internal water pressure, water in sewage chamber 101 passes through first rolled reverse osmosis membrane 31 and then is initially filtered into concentrated water chamber 103. Due to the water pressure difference between concentrated water chamber 102 and clean water chamber 103, the water pressure in concentrated water chamber 102 is higher than the water pressure in clean water chamber 103, so that the concentrated water chamber 102 further penetrates into clean water chamber 103 under the action of internal water pressure, and then the collected clean water is collected and recycled for reuse, thereby realizing water recycling, saving water and avoiding water waste.

[0035] See also Figure 4 and Figure 5 The backwash assembly 40 also includes a connecting hole 1101 arranged on the innermost partition of the upper end cover 11, the connecting hole 1101 penetrates the concentrated water chamber 112 and is connected to the clean water chamber 113, and a T-shaped through hole 411 connected up and down is opened on the sliding sealing plug 41. When the sliding sealing plug 41 slides up and down, the opening of the horizontal end of the T-shaped through hole 411 can be aligned with the connecting hole 1101, and 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 sealing plug 41 through a reset component, and the reset component includes a T-shaped through hole 411 connected to the upper end cover. 11 is connected to the first elastic member 12 in 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 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 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, and the first elastic member 12 and the second elastic member 13 are preferably springs in this scheme.

[0036] When in use, after the filter cartridge 10 has been working for a period of time, when the inside of the filter cartridge 10 is clogged, the water pressure in the concentrated water chamber 112 and the clean water chamber 113 decreases, and the force of the water pressure in the first elastic member 12 and the clean water chamber 113 on the sliding sealing plug 41 decreases. Since the clean water chamber 113 is connected to the external backwashing pipeline, the backwashing 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 sealing plug 41 to slide downward. After the sliding sealing plug 41 slides downward for a certain distance, the horizontal section of the T-shaped through hole 411 is aligned with the connecting hole 1101, and the sliding sealing plug 41 slides downward for a certain distance. Figure 3 , the second elastic member 13 drives the sealing block 42 to slide outward and adapt to the connecting hole 1101 to block the clean water chamber 113. At this time, it is connected with the clean water chamber 113 through the backwashing pipe. The water in the backwashing pipe enters the clean water chamber 113 with 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, and automatically backwashes the second rolled reverse osmosis membrane 32 and the first rolled reverse osmosis membrane 31. In different embodiments, the first elastic member 12 and the second elastic member 13 are preferably springs. It should be specially noted that the portion where the sealing block 42 contacts the horizontal section of the T-shaped through hole 411 is an inclined slope, which is convenient for the sealing block 42 to return to the top of the second elastic member 13 to reset when the water pressure in the rolled clean water chamber 113 increases. At this time, the sealing block 42 unblocks the clean water chamber 113, and at this time, it is blocked with the clean water chamber 113 through the backwashing pipe.

[0037] See also Figure 4 The end of the filter cartridge 10 away from the upper end cover 11 is connected to the lower end cover 14, and the lower end cover 14 is connected to the filter cartridge 10 through a thread. An end cover plate 141 is provided at one end of the lower end cover 14 close to the filter cartridge 10, and an overlap portion is provided on the end cover plate 141. The overlap portion is respectively adapted to and abuts 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, which can enable the sewage chamber 101 and the concentrated water chamber 102 to form a space connected with the lower end cover 14 respectively. The space connected with the sewage chamber 101 is connected with the external sewage circulation collection and treatment chamber through the first flange interface 142, and the space connected with the concentrated water chamber 102 is connected with the external concentrated water recycling treatment chamber through the second flange interface 143. When backwashing is performed, 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, and the turbid liquid after backwashing is discharged from the filter cartridge 10 for circulation and reprocessing.

[0038] In summary, by adding the sliding sealing plug 41 and the sealing block 42 to seal the clean water chamber 113 and unblocking the pipeline during backwashing, the filter cartridge 10 is automatically backwashed when the filter cartridge is blocked internally and the output water pressure is reduced, thereby ensuring the normal operation of the reverse osmosis.

[0039] Embodiment 2 During the use of the above embodiment, the inventors found that due to the presence of some sticky particles in the sewage, some impurity particles after backwashing still adhere to the inner wall, and block the osmosis membrane again in a short time when permeating the filtration tank, affecting the operation of the roll reverse osmosis system. In order to solve the above problem, we have made further improvements to the above embodiment.

[0040] See also Figures 6 to 9 A cleaning assembly 50 is provided 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 includes a rotating shaft 51 connected to the end cover plate 141, and a driving blade 511 is provided 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. The cleaning assembly 50 also 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, and the two sides of the first spiral scraper 52 are respectively in contact with the inner wall of the filter cartridge 10 and the outer wall of the first roll reverse osmosis membrane 31. The second spiral scraper 53 is adapted to the inner wall of the concentrated water chamber 102, and the two sides of the second spiral scraper 53 are respectively in contact with the inner wall of the first roll reverse osmosis membrane 31 and the outer wall of the second roll reverse osmosis membrane 32.

[0041] When the output water pressure of the roll-type reverse osmosis system decreases, the device starts to perform backwashing. The backwashing clean water pressure overcomes the first elastic member 12 and the water pressure belt in the clean water chamber 113 to slide the sealing plug 41 downward, so that the sliding sealing plug 41 blocks the clean water chamber 113 pipeline. At the same time, the second elastic member 13 drives the sealing block 42 to slide outward to unblock the backwashing clean water pipeline. The backwashing clean water conflicts with the driving blade 511, driving the driving blade 511 to rotate, and 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 and the outer wall of the first roll-type reverse osmosis membrane 31, the inner wall of the first roll-type reverse osmosis membrane 31 and the outer wall of the second roll-type 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, thereby ensuring the cleanliness of the inside of the filter cartridge 10.

[0042] In summary, the added first spiral scraper 52 and the second spiral scraper 53 rotate to automatically scrape away the particulate impurities adhered to the filter cartridge 10 during backwashing, thereby avoiding the problem of large particulate impurities still adhering to the filter cartridge 10 during backwashing and quickly clogging the rolled reverse osmosis membrane.

[0043] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should 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 filtering component (30) decreases, the sliding sealing plug (41) is driven by the backwashing component (40) to slide up and down to backwash the filtering component (30).

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 cover (11) is connected to a sewage pipe (212).

3. A roll-type reverse osmosis system according to claim 2, characterized in that: 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).

4. A roll-type reverse osmosis system according to claim 3, characterized in that: The backwash assembly (40) further comprises a communication hole (1101) arranged on an internal 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) being provided with a T-shaped through hole (411) communicating with each other from top to bottom, a sealing block (42) being slidably connected in a horizontal end hole of the T-shaped through hole (411), and the sealing block (42) being connected to the sliding sealing plug (41) via a reset component.

5. A roll-type reverse osmosis system according to claim 4, 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).

6. A roll-type reverse osmosis system according to claim 5, characterized in that: The end of the filter cartridge (10) away from the upper end cover (11) is connected to the lower end cover (14), and 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, and 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), respectively. 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).

7. A roll-type reverse osmosis system according to claim 6, characterized in that: 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).

8. A roll-type reverse osmosis system according to claim 7, characterized in that: The cleaning assembly (50) comprises a rotating shaft (51) connected to the end cover plate (141), a driving blade (511) being arranged on the upper side of the rotating shaft (51), the driving blade (511) being 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).

9. A roll-type reverse osmosis system according to claim 4, 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).

10. A roll-type reverse osmosis system according to claim 9, 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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