Reverse osmosis membrane pressure stabilizer

Abstract

The invention discloses a reverse osmosis membrane pressure stabilizer, and relates to the technical field of reverse osmosis membranes, the reverse osmosis membrane pressure stabilizer comprises a shell, a pressure relief assembly and a clamping assembly, the pressure relief assembly and the clamping assembly are assembled in the shell, the pressure relief assembly comprises a fixed disc fixedly connected in the shell, and one side of the fixed disc is connected with a first closing plate through an elastic piece; one side of the first closing plate is connected with a second closing plate through an elastic piece, one side of the second closing plate is connected with a third closing plate through an elastic piece, the elastic piece comprises a fixing column fixedly connected to one side of the fixing disc, one side of the first closing plate and one side of the second closing plate, and one side of the fixing column is fixedly connected with a limiting block; the periphery of the fixing column is sleeved with a telescopic spring, a sliding groove is formed in the periphery of the second sealing plate, the design of multiple layers of sealing plates is adopted, water flow sequentially encounters the first sealing plate, the second sealing plate and the third sealing plate, and the sealing plates buffer impact through the telescopic spring and slide along the fixing column; according to the design, the impact force of water flow before reaching the reverse osmosis membrane component is obviously weakened.

Description

Technical Field

[0001] The present invention relates to the technical field of reverse osmosis membranes, and particularly to a reverse osmosis membrane pressure stabilizer. Background Art

[0002] A reverse osmosis membrane is an artificial semi-permeable membrane made by simulating a biological semi-permeable membrane and is the core component of reverse osmosis technology. The membrane pores of the reverse osmosis membrane are very small, usually between 0.5 and 10 nanometers. Therefore, it can effectively remove dissolved salts, colloids, microorganisms, organic matters and other impurities in water. When the pressure applied to the system is greater than the osmotic pressure of the feed solution, water molecules continuously pass through the membrane, flow into the central tube through the product water flow channel, and then flow out at one end; while impurities in the water, such as ions, organic matters, bacteria, viruses, etc., are retained on the feed side of the membrane and then flow out at the concentrated water outlet end, so as to achieve the purpose of separation and purification.

[0003] In the existing technical system, a high-pressure pump, a key device, is generally used to provide the necessary working pressure for the reverse osmosis membrane. With its powerful transmission ability, the high-pressure pump ensures that water can smoothly pass through the reverse osmosis membrane to complete the purification process.

[0004] However, in the actual operation process, when the high-pressure pump starts up, a hydraulic shock "water hammer" phenomenon often occurs. If this sudden hydraulic fluctuation acts directly on the membrane element without treatment, the bonding line of the membrane bag may not withstand the huge impact force and break, which not only seriously affects the normal operation of the reverse osmosis system, but also may cause damage to expensive membrane elements, increasing the maintenance cost and replacement frequency. Summary of the Invention

[0005] The purpose of the present invention is to propose a solution to solve the problem that in the actual operation process, when the high-pressure pump starts up, a hydraulic shock "water hammer" phenomenon often occurs. If this sudden hydraulic fluctuation acts directly on the membrane element without treatment, the bonding line of the membrane bag may not withstand the huge impact force and break, which not only seriously affects the normal operation of the reverse osmosis system, but also may cause damage to expensive membrane elements, increasing the maintenance cost and replacement frequency.

[0006] To achieve the above purpose, the present invention adopts the following technical solution: A reverse osmosis membrane pressure stabilizer, including a housing, and further including: a pressure relief component and a clamping component assembled inside the housing; The pressure relief component includes a fixed disk fixedly connected inside the housing. One side of the fixed disk is slidably connected with a first closing plate through an elastic member. One side of the first closing plate is slidably connected with a second closing plate through an elastic member. One side of the second closing plate is also slidably connected with a third closing plate through an elastic member. The elastic member includes a number of fixed columns fixedly connected to one side of the fixed disk, the first closing plate and the second closing plate. One side of the fixed column is fixedly connected with a limiting block. The outer periphery of the fixed column is sleeved with a telescopic spring. A number of sliding grooves are formed on the outer periphery of the second closing plate; After the high-pressure pump is started and water flows into the housing, the water pushes the first closing plate, the second closing plate and the third closing plate to slide on the outer periphery of the fixed column under the action of pressure, and at the same time compresses the telescopic spring, and the water impact force is reduced by the sequential decrease of the first closing plate, the second closing plate and the third closing plate.

[0007] As a further description of the above technical solution: The pressure relief component further includes bevels formed on the outer peripheries of the first closing plate, the second closing plate and the third closing plate.

[0008] As a further description of the above technical solution: The clamping component includes a number of fixed blocks fixedly connected to the inner wall of the housing. An inner cavity is formed inside the fixed block. A pressing member is fixedly connected to the inner wall of the inner cavity. A pushing block abutted against the pressing member is fixedly connected to one side of the first closing plate.

[0009] As a further description of the above technical solution: The pressing member includes a positioning column fixedly connected inside the inner cavity. A lifting block is slidably connected to the outer periphery of the positioning column. A pressure spring is sleeved on the outer periphery of the positioning column. A rubber pressing sheet is connected to the bottom of the lifting block.

[0010] As a further description of the above technical solution: An abutting angle is formed on one side of the lifting block close to the pushing block, and the abutting angle abuts against the pushing block.

[0011] As a further description of the above technical solution: A flow dividing component is connected inside the fixed block. The flow dividing component includes a slotted opening and a limiting slot formed inside the fixed block. A transmission member is connected between the inner walls of the slotted opening. A sliding gear plate is slidably connected to the inner wall of the limiting slot.

[0012] As a further description of the above technical solution: The transmission member includes a mounting rod fixedly connected to the inner wall of the slot. A rotating gear meshing with the sliding gear plate is rotatably connected to the outer periphery of the mounting rod. One side of the first closing plate is fixedly connected with a pushing gear plate, and the pushing gear plate is slidably connected to the sliding slot. The pushing gear plate is meshingly connected with the rotating gear. One side of the sliding gear plate is fixedly connected with a fitting plate.

[0013] As a further description of the above technical solution: The inner ring of the fitting plate is provided with a water inlet, the outer ring of the fitting plate is provided with a water outlet, and the water outlet is communicated with the water inlet through a flow dividing groove. One side of the fitting plate is provided with a water leakage port communicated with the flow dividing groove.

[0014] As a further description of the above technical solution: The housing includes an outer shell. A fixed cover is threadedly connected to the outer periphery of the outer shell. One side of the fixed cover is connected with a water inlet pipe. One side of the outer shell is connected with a purified water outlet pipe and a sewage outlet pipe. The inner wall of the outer shell is connected with a central pipe, and a reverse osmosis membrane module is installed on the outer periphery of the central pipe.

[0015] As a further description of the above technical solution: A water blocking sleeve is connected to the outer periphery of the reverse osmosis membrane module, and a sealing ring is connected between the outer shell and the fixed cover.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: To ensure that the water flow impact at the moment of high-pressure pump startup does not damage the reverse osmosis membrane module, a multi-layer closing plate design is adopted. The water flow encounters the first closing plate, the second closing plate and the third closing plate in sequence. These closing plates buffer the impact through the telescopic springs and slide along the fixed columns. This design significantly weakens the impact force of the water flow before it reaches the reverse osmosis membrane module. At the same time, the water flow flows along the diagonal angle to the inner wall of the outer shell in the gaps between the closing plates, further reducing the direct impact force; As the water flow pushes the closing plate to move, the pushing block drives the lifting block to slide along the positioning column, compressing the pressure spring, so that the rubber pressing piece tightly presses the reverse osmosis membrane module to prevent it from moving; In addition, the movement of the closing plate also makes the fitting plate fit between the gaps of the closing plates through gear transmission, guiding the water flow to flow out through the water inlet, the flow dividing groove and the water outlet. The water flow further reduces the impact force during the flow division and mutual impact. At the same time, the water leakage port design also reduces the impact force of the water flow in different directions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Shows a schematic diagram of the overall structure according to the present invention; Figure 2 Shows a schematic diagram of the internal structure of the outer shell according to the present invention; Figure 3 Shows according to the present inventionFigure 2 Another perspective structural schematic diagram; Figure 4 Shows a structural schematic diagram of a fixed disk according to the present invention; Figure 5 Shows a disassembled structural schematic diagram of a pressure relief component according to the present invention; Figure 6 Shows according to the present invention Figure 5 Another perspective structural schematic diagram; Figure 7 Shows a structural schematic diagram of a clamping component according to the present invention; Figure 8 Shows a structural schematic diagram of a flow splitting component according to the present invention; Figure 9 Shows a sectional structural schematic diagram of an engaging plate according to the present invention.

[0018] Legend description: 10. Housing; 11. Outer shell; 12. Fixed cover; 13. Water inlet pipe; 14. Clean water outlet pipe; 15. Sewage outlet pipe; 16. Central pipe; 17. Reverse osmosis membrane module; 18. Water blocking sleeve; 19. Sealing ring; 20. Pressure relief component; 21. Fixed disk; 22. First closing plate; 23. Second closing plate; 24. Third closing plate; 25. Fixed column; 251. Limiting block; 26. Telescopic spring; 27. Sliding groove; 28. Bevel angle; 30. Clamping component; 31. Pushing block; 32. Fixed block; 321. Inner cavity; 322. Positioning column; 323. Lifting block; 324. Pressure spring; 325. Rubber pressing piece; 326. Contact angle; 40. Flow splitting component; 41. Groove; 42. Limiting groove; 43. Mounting rod; 44. Rotating gear; 45. Sliding gear plate; 46. Pushing gear plate; 47. Engaging plate; 471. Water inlet; 472. Flow splitting groove; 473. Water outlet; 474. Leakage port. Detailed implementation manners

[0019] 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. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] As Figures 1-9As shown in the figure, a reverse osmosis membrane pressure stabilizer provided by the present invention includes a housing 10. The housing 10 includes an outer shell 11. The outer periphery of the outer shell 11 is threadedly connected with a fixing cover 12. One side of the fixing cover 12 is connected with a water inlet pipe 13. One side of the water inlet pipe 13 is connected with a high-pressure pump assembly and a water inlet source. One side of the outer shell 11 is connected with a purified water outlet pipe 14 and a sewage outlet pipe 15. The inner wall of the outer shell 11 is connected with a central pipe 16. The outer periphery of the central pipe 16 is provided with a reverse osmosis membrane module 17. The outer periphery of the reverse osmosis membrane module 17 is connected with a water blocking sleeve 18. A sealing ring 19 is connected between the outer shell 11 and the fixing cover 12; The water to be treated first passes through the treatment of a high-pressure pump, and then is introduced into the interior of the outer shell 11 along the water inlet pipe 13. When the pressure applied inside the outer shell 11 exceeds the osmotic pressure of the inlet solution, water molecules will continuously pass through the filter layer of the reverse osmosis membrane module 17. These filtered water molecules will flow through the water production flow channel and finally converge into the central pipe 16. Subsequently, the purified water flows out smoothly from the purified water outlet pipe 14 connected to one end of the central pipe 16; At the same time, various impurities in the water, including but not limited to ions, organic substances, bacteria, and viruses, etc., will be effectively intercepted on the water inlet side of the reverse osmosis membrane module 17 and cannot penetrate the membrane layer. These intercepted impurities will finally be discharged out of the system through the sewage outlet pipe 15. Through such a treatment process, the system successfully realizes the purpose of separating and purifying water.

[0021] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 shown in the figure, it further includes a pressure relief component 20 and a clamping component 30 assembled inside the outer shell 11. The pressure relief component 20 includes a fixed disk 21 fixedly connected inside the outer shell 11. One side of the fixed disk 21 is slidably connected with a first closing plate 22 through an elastic member. One side of the first closing plate 22 is slidably connected with a second closing plate 23 through an elastic member. One side of the second closing plate 23 is also slidably connected with a third closing plate 24 through an elastic member. The elastic member includes a plurality of fixed columns 25 fixedly connected to one side of the fixed disk 21, the first closing plate 22, and the second closing plate 23. One side of the fixed column 25 is fixedly connected with a limit block 251. The outer periphery of the fixed column 25 is sleeved with a telescopic spring 26. A plurality of sliding grooves 27 are formed in the outer periphery of the second closing plate 23. The pressure relief component 20 further includes bevels 28 formed on the outer peripheries of the first closing plate 22, the second closing plate 23, and the third closing plate 24; To ensure that the water flow impact generated at the moment of starting the high-pressure pump does not damage the reverse osmosis membrane module 17, the pressurized water flow enters the interior of the housing 11 through the water inlet pipe 13 and successively encounters the blocking of the first closing plate 22, the second closing plate 23, and the third closing plate 24. The first closing plate 22, the second closing plate 23, and the third closing plate 24 are designed to move in response to the impact of the water flow and play a role in reducing the impact force during this process; Specifically, when the water flow impacts the first closing plate 22, it slides along the outer circumference of the fixed column 25 fixed to one side of the fixed disk 21 and simultaneously compresses the telescopic spring 26 connected to this closing plate. As the first closing plate 22 reaches its maximum moving stroke, it drives the fixed column 25 on one side of it to move synchronously. Subsequently, the water flow continues to impact the second closing plate 23, causing it to slide along the outer circumference of the fixed column 25 on one side of the first closing plate 22 and also compressing the telescopic spring 26. When the second closing plate 23 also reaches its maximum moving stroke, it also drives the fixed column 25 on one side of it to move synchronously. Finally, the water flow impacts the third closing plate 24, causing it to slide along the outer circumference of the fixed column 25 on one side of the second closing plate 23 and continue to compress the telescopic spring 26; Through this design of layer-by-layer blocking, the impact force of the water flow has been significantly weakened before it reaches the reverse osmosis membrane module 17. In addition, when the water flow circulates in the gaps between the first closing plate 22, the second closing plate 23, and the third closing plate 24, it flows along the direction of the bevel angle 28 towards the inner wall of the housing 11. This flow pattern enables the water flow passing through the gap to have a certain impact on the normally flowing water flow, thereby further reducing the direct impact force of the water flow.

[0022] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 7 、 Figure 8 As shown in the figure, the clamping assembly 30 includes a number of fixed blocks 32 fixedly connected to the inner wall of the housing 11. The interior of the fixed block 32 is provided with an inner cavity 321. The inner wall of the inner cavity 321 is fixedly connected with a downward pressing member. One side of the first closing plate 22 is fixedly connected with a pushing block 31 that abuts against the downward pressing member. The downward pressing member includes a positioning column 322 fixedly connected inside the inner cavity 321. A lifting block 323 is slidably connected to the outer circumference of the positioning column 322, and a pressure spring 324 is sleeved on the outer circumference of the positioning column 322. The bottom of the lifting block 323 is connected with a rubber pressing sheet 325. An abutting angle 326 is provided on one side of the lifting block 323 close to the pushing block 31, and the abutting angle 326 abuts against the pushing block 31; When the water flow impacts and pushes the first closing plate 22 to move, the first closing plate 22 will synchronously drive a number of pushing blocks 31 to move together. These pushing blocks 31 will smoothly move along the abutting corner 326 on one side of the lifting block 323, and then push the lifting block 323 to slide along the outer periphery of the positioning column 322. During this sliding process, the lifting block 323 will exert a squeezing effect on the compression spring 324. As the lifting block 323 gradually descends, it will drive the rubber pressing piece 325 to tightly press the reverse osmosis membrane module 17, thereby ensuring that the reverse osmosis membrane module 17 will not move when impacted by the water flow subsequently.

[0023] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 8 , Figure 9 shown, a flow splitting assembly 40 is connected inside the fixing block 32. The flow splitting assembly 40 includes a slotted opening 41 and a limiting groove 42 opened inside the fixing block 32. A transmission member is connected between the inner walls of the slotted opening 41. A sliding gear plate 45 is slidably connected to the inner wall of the limiting groove 42. The transmission member includes a mounting rod 43 fixedly connected to the inner wall of the slotted opening 41. A rotating gear 44 meshing with the sliding gear plate 45 is rotatably connected to the outer periphery of the mounting rod 43. A pushing gear plate 46 is fixedly connected to one side of the first closing plate 22, and the pushing gear plate 46 is slidably connected to the sliding groove 27. The pushing gear plate 46 is meshingly connected with the rotating gear 44. A fitting plate 47 is fixedly connected to one side of the sliding gear plate 45. An inlet 471 is opened in the inner circle of the fitting plate 47. An outlet 473 is opened in the outer circle of the fitting plate 47, and the outlet 473 is communicated with the inlet 471 through a flow splitting groove 472. A water leakage port 474 communicated with the flow splitting groove 472 is opened on one side of the fitting plate 47; As the first closing plate 22 moves, it will synchronously drive the pushing gear plate 46 on one side to move. During the movement of the pushing gear plate 46, it will further push the rotating gear 44 to rotate on the outer periphery of the mounting rod 43. At the same time, the rotation of the rotating gear 44 will drive the sliding gear plate 45 to move correspondingly inside the limiting groove 42. This movement further causes the fitting plate 47 to gradually approach the gap between the first closing plate 22 and the second closing plate 23; When the first closing plate 22 reaches its maximum stroke under the impact of the water flow, the fitting plate 47 just tightly fits between the gap of the first closing plate 22 and the second closing plate 23 as the rotating gear 44 continues to rotate. This design ensures that the water flow can only flow along the inlet 471 on the fitting plate 47. Once the water flow enters the inlet 471, it will be divided into two streams through the flow splitting groove 472. These two streams of water will flow along the flow splitting groove 472 and impact each other, thereby effectively reducing the impact force brought by the water flow; The water flow after shunting and mutual impact will flow out through the water outlet 473 on the fitting plate 47. At the same time, the water flow flowing out of the water outlet 473 will converge with the water flow flowing out of the gap between the fixed disk 21 and the first closing plate 22. This mutual impact and convergence of the water flow further reduces the impact force of the water flow; In addition, a part of the water flow with reduced impact force will flow out through the water leakage port 474 on the fitting plate 47 and converge with the water flow flowing out of the gap between the second closing plate 23 and the third closing plate 24. This design synchronously reduces the impact force of the water flow in different directions, thus effectively preventing possible damage to the reverse osmosis membrane module 17.

[0024] Working principle: To ensure that the water flow impact generated at the instant of starting the high-pressure pump will not damage the reverse osmosis membrane module 17, the pressurized water flow first enters the housing 11 through the water inlet pipe 13 and successively encounters the blocking of the first closing plate 22, the second closing plate 23, and the third closing plate 24. These closing plates are designed to be movable and can respond to the water flow impact and slow down its force. When the water flow impacts any closing plate, it will push the closing plate to slide along the fixed column 25 and compress the telescopic spring 26, thereby gradually weakening the impact force. As the water flow continues to flow, it will pass through the gap between the closing plates and flow along the bevel angle 28 to the inner wall of the housing 11. This flow pattern further reduces the direct impact force of the water flow; At the same time, the movement of the first closing plate 22 will drive the push block 31 and the lifting block 323, and then tightly compress the reverse osmosis membrane module 17 through the pressure spring 324 and the rubber pressing piece 325 to prevent it from moving under the water flow impact. In addition, the movement of the first closing plate 22 will also drive the sliding gear plate 45 and the fitting plate 47 to move through the push gear plate 46 and the rotating gear 44. When the first closing plate 22 reaches the maximum stroke, the fitting plate 47 closely fits between the gap between the first closing plate 22 and the second closing plate 23, ensuring that the water flow can only flow through the water inlet 471 on the fitting plate 47. After the water flow enters the water inlet 471, it will be divided into two streams and impact each other through the shunt groove 472, further reducing the impact force; Finally, the water flow after shunting and mutual impact will flow out from the water outlet 473 of the fitting plate 47 and converge with the water flow flowing out from other gaps. This mutual impact and convergence of the water flow further reduces the overall impact force. At the same time, a part of the water flow with reduced impact force will also flow out from the water leakage port 474 of the fitting plate 47 and converge with the water flow flowing out from the gaps of other closing plates, thus effectively preventing possible damage to the reverse osmosis membrane module 17.

[0025] As described above, it is only the preferred specific implementation manner 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 of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A reverse osmosis membrane pressure stabilizer, comprising a housing (10), characterized in that, It further includes: A pressure relief component (20) and a clamping component (30) assembled inside the housing (10); The pressure relief component (20) includes a fixed disk (21) fixedly connected inside the housing (10). One side of the fixed disk (21) is slidably connected with a first closing plate (22) through an elastic member. One side of the first closing plate (22) is slidably connected with a second closing plate (23) through an elastic member. One side of the second closing plate (23) is also slidably connected with a third closing plate (24) through an elastic member. The elastic member includes a number of fixed columns (25) fixedly connected to one side of the fixed disk (21), the first closing plate (22), and the second closing plate (23). One side of the fixed column (25) is fixedly connected with a limiting block (251). The outer periphery of the fixed column (25) is sleeved with a telescopic spring (26). A number of sliding grooves (27) are formed on the outer periphery of the second closing plate (23); When the high-pressure pump is started and water flows into the housing (10), the water flow pushes the first closing plate (22), the second closing plate (23), and the third closing plate (24) to slide on the outer periphery of the fixed column (25) under the action of pressure, and at the same time compresses the telescopic spring (26). The water flow impact force is reduced by the sequential decrease of the first closing plate (22), the second closing plate (23), and the third closing plate (24).

2. The pressure stabilizer for reverse osmosis membrane according to claim 1, characterized in that, The pressure relief component (20) further includes bevels (28) formed on the outer peripheries of the first closing plate (22), the second closing plate (23), and the third closing plate (24).

3. The pressure stabilizer for reverse osmosis membrane according to claim 1, characterized in that, The clamping component (30) includes a number of fixed blocks (32) fixedly connected to the inner wall of the housing (10). An inner cavity (321) is formed inside the fixed block (32). A downward pressing member is fixedly connected to the inner wall of the inner cavity (321). A pushing block (31) in contact with the downward pressing member is fixedly connected to one side of the first closing plate (22).

4. The pressure stabilizer for reverse osmosis membrane according to claim 3, characterized in that The downward pressing member includes a positioning column (322) fixedly connected inside the inner cavity (321). A lifting block (323) is slidably connected to the outer periphery of the positioning column (322). A pressure spring (324) is sleeved on the outer periphery of the positioning column (322). A rubber pressing sheet (325) is connected to the bottom of the lifting block (323).

5. The pressure stabilizer for reverse osmosis membrane according to claim 4, characterized in that, An abutting angle (326) is formed on one side of the lifting block (323) close to the pushing block (31), and the abutting angle (326) is in contact with the pushing block (31).

6. The pressure stabilizer for a reverse osmosis membrane according to claim 3, characterized in that, A flow splitting component (40) is connected inside the fixed block (32). The flow splitting component (40) includes a slot (41) and a limiting slot (42) formed inside the fixed block (32). A transmission member is connected between the inner walls of the slot (41). A sliding gear plate (45) is slidably connected to the inner wall of the limiting slot (42).

7. An osmotic membrane pressure stabilizer according to claim 6, characterized in that, The transmission member includes a mounting rod (43) fixedly connected to the inner wall of the slotted groove (41). A rotating gear (44) meshing with the sliding gear plate (45) is rotatably connected to the outer periphery of the mounting rod (43). One side of the first closing plate (22) is fixedly connected with a pushing gear plate (46), and the pushing gear plate (46) is slidably connected to the sliding groove (27). The pushing gear plate (46) is meshingly connected with the rotating gear (44). One side of the sliding gear plate (45) is fixedly connected with a fitting plate (47).

8. The pressure stabilizer for reverse osmosis membrane according to claim 7, wherein, An inlet (471) is provided in the inner circle of the fitting plate (47). An outlet (473) is provided in the outer circle of the fitting plate (47), and the outlet (473) is communicated with the inlet (471) through a flow dividing groove (472). A water leakage port (474) communicated with the flow dividing groove (472) is provided on one side of the fitting plate (47).

9. A reverse osmosis membrane pressure stabilizer according to claim 1, characterized in that, The housing (10) includes an outer shell (11). A fixing cover (12) is threadedly connected to the outer periphery of the outer shell (11). A water inlet pipe (13) is connected to one side of the fixing cover (12). A purified water outlet pipe (14) and a sewage outlet pipe (15) are connected to one side of the outer shell (11). A central pipe (16) is connected to the inner wall of the outer shell (11). A reverse osmosis membrane module (17) is installed on the outer periphery of the central pipe (16).

10. The reverse osmosis membrane pressure stabilizer according to claim 9, characterized in that, A water blocking sleeve (18) is connected to the outer periphery of the reverse osmosis membrane module (17). A sealing ring (19) is connected between the outer shell (11) and the fixing cover (12).

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