A permeable membrane assembly convenient to replace and a reverse osmosis device

Abstract

The utility model discloses a kind of osmosis membrane module and reverse osmosis device convenient to replace, it is related to sewage treatment technical field, specifically including shell, the shell one end is sealed by rear end cover, the inner chamber of shell one end is provided with locating plate, the water inlet cavity is formed between locating plate and rear end cover, the side of water inlet cavity is provided with liquid inlet check valve, the other end of shell is sealed by front end cover, the middle part of front end cover is movably connected with rotating shaft, one end of rotating shaft is connected with rotating handle, rotating handle is located in the outside of shell, the other end of rotating shaft is connected with limit rod. The front end cover of the application and membrane unit can form integrated structure, so that membrane unit and front end cover can realize linkage disassembly, simplify membrane unit replacement step, and have reliable force point, improve membrane unit disassembly efficiency, and limit rod and limit plate can form mechanical self-locking, improve front end cover fixed reliability.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to a replaceable permeation membrane module and a reverse osmosis device. Background Technology

[0002] Reverse osmosis technology is increasingly widely used in water treatment. The reverse osmosis membrane module is the core component of a reverse osmosis system. After prolonged use, it inevitably faces membrane fouling, necessitating periodic replacement of the membrane units within the module. However, existing reverse osmosis membrane modules typically use a separate design for the membrane units and end caps. This requires operators to completely disassemble and place the end caps before replacing the membrane units, impacting replacement efficiency. Furthermore, the membrane units are located inside the reverse osmosis membrane module, making it difficult for operators to find reliable points of leverage when removing them, thus affecting the ease of handling and replacement, and consequently, the efficiency of membrane unit replacement. Therefore, this application proposes a more easily replaceable reverse osmosis membrane module and reverse osmosis system. Utility Model Content

[0003] This invention provides a replaceable permeate membrane module and reverse osmosis device, solving the problems mentioned in the background art, where the membrane unit and fixed end cap are designed separately, requiring operators to completely disassemble and place the end cap before replacing the membrane unit, which affects the replacement efficiency. Furthermore, the membrane unit is located inside the reverse osmosis membrane module, making it difficult for operators to find a reliable point of force when removing the membrane unit, thus affecting the convenience of membrane unit removal and replacement efficiency.

[0004] This utility model provides the following technical solution: a replaceable permeate membrane assembly, comprising a housing, one end of which is sealed by a rear end cover, a positioning plate provided in the inner cavity of one end of the housing, an inlet chamber formed between the positioning plate and the rear end cover, a one-way valve for liquid inlet provided on one side of the inlet chamber, the other end of the housing being sealed by a front end cover, a rotating shaft movably connected to the middle of the front end cover, a rotating handle connected to one end of the rotating shaft, the rotating handle being located outside the housing, and a limiting rod connected to the other end of the rotating shaft; a reverse osmosis chamber is formed between the front end cover and the positioning plate, a membrane unit is placed inside the reverse osmosis chamber, the membrane unit comprising a first membrane end plate and a permeate center tube, a center hole adapted to the permeate center tube provided in the middle of the first membrane end plate, a limiting plate provided inside the center hole, a through groove adapted to the limiting rod provided in the middle of the limiting plate, and the limiting rod extending into the inner cavity of the permeate center tube through the through groove.

[0005] Preferably, the front cover includes a rotating cover, and a fixing tube is connected to the outer ring of the inner side of the rotating cover. The fixing tube is threaded to the other end of the housing. A reinforcing plate, an isolation plate, and a water inlet plate are sequentially arranged in the inner cavity of the fixing tube. The reinforcing plate is located on the side of the isolation plate close to the rotating cover. A pure water cavity is formed between the reinforcing plate and the isolation plate. A first drain hole is provided on one side of the pure water cavity. A concentrated water cavity is formed between the isolation plate and the water inlet plate. A second drain hole is provided on one side of the concentrated water cavity. A water inlet pipe is connected to the middle of the isolation plate. The end of the water inlet pipe away from the isolation plate extends to the outside of the water inlet plate.

[0006] Preferably, a sealing plate is provided between the reinforcing plate and the rotating cover, and the sealing plate, the reinforcing plate, the rotating cover and the water inlet pipe are all movably connected to the rotating shaft.

[0007] Preferably, the water inlet plate, the limiting plate, and the positioning plate are all uniformly provided with mesh holes.

[0008] Preferably, the other end of the housing is provided with a concentrate discharge check valve and a filter discharge check valve. When the front end cover is connected to the housing, the concentrate discharge check valve is aligned with the second drain hole, and the filter discharge check valve is aligned with the first drain hole.

[0009] Preferably, the membrane unit further includes a second membrane end plate and a reverse osmosis membrane, with the reverse osmosis membrane disposed between the first membrane end plate and the second membrane end plate, and the reverse osmosis membrane arranged around the permeate central tube.

[0010] A reverse osmosis device includes a base and a replaceable membrane assembly. The top of the base is provided with a mounting bracket and a pressure pump. The membrane assembly is connected to the base via the mounting bracket. The outlet end of the pressure pump is connected to the inlet end of the membrane assembly via a connecting pipe. The concentrate outlet end of the membrane assembly is connected to a concentrate outlet pipe, and the filtrate outlet end of the membrane assembly is connected to a filtrate outlet pipe.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. This easy-to-replace permeate membrane module and reverse osmosis device can form an integrated structure with the front end cover and the membrane unit, which allows the membrane unit and the front end cover to be disassembled in conjunction, simplifying the membrane unit replacement steps, and providing a reliable force application point to improve the disassembly efficiency of the membrane unit. In addition, the limiting rod and the limiting plate can form a mechanical self-locking mechanism to improve the fixing reliability of the front end cover.

[0013] 2. The easily replaceable permeate membrane module and reverse osmosis device adopts a side-mounted liquid inlet and outlet method for the reverse osmosis membrane module, which can avoid the inlet and outlet liquid pipes affecting the replacement of the membrane unit and further improve the convenience of membrane unit replacement; the positioning plate can reduce the impact of inlet water pressure fluctuations on the reverse osmosis membrane and control the inlet water flow rate of the membrane unit, uniform membrane flux, and facilitate the operation of the membrane unit. Attached Figure Description

[0014] Figure 1 This is a front view of a permeation membrane assembly that is easy to replace, as proposed in this utility model.

[0015] Figure 2 This is a cross-sectional schematic diagram of a permeation membrane assembly that is easy to replace according to the present invention;

[0016] Figure 3 This is a schematic diagram of the front end cover of the present invention.

[0017] Figure 4 This is a schematic diagram of the structural membrane unit of this utility model;

[0018] Figure 5 This is a schematic diagram of a reverse osmosis device proposed in this utility model.

[0019] In the diagram: 1. Shell; 2. Rotating cover; 3. Rear end cover; 4. Inlet check valve; 5. Filtrate discharge check valve; 6. Concentrate discharge check valve; 7. Rotating handle; 8. Fixing pipe; 9. Positioning plate; 10. Permeate center pipe; 11. Reverse osmosis membrane; 12. Sealing plate; 13. Reinforcing plate; 14. Isolation plate; 15. Inlet plate; 16. Inlet pipe; 17. Rotating shaft; 18. Limiting rod; 19. Second drain hole; 20. First drain hole; 21. External thread; 22. Limiting plate; 23. First membrane end plate; 24. Base; 25. Fixing frame; 26. Pressure pump; 27. Filtrate discharge pipe; 28. Concentrate discharge pipe; 29. ​​Connecting pipe; 30. Through groove; 31. Second membrane end plate. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] This utility model provides an embodiment: Please refer to Figures 1-4A replaceable reverse osmosis membrane module includes a housing 1. One end of the housing 1 is sealed by a rear end cover 3. A positioning plate 9 is provided in the inner cavity of one end of the housing 1, forming an inlet chamber between the positioning plate 9 and the rear end cover 3. A liquid inlet check valve 4 is provided on one side of the inlet chamber. Mesh holes are evenly provided on the positioning plate 9. The other end of the housing 1 is sealed by a front end cover, forming a reverse osmosis chamber between the front end cover and the positioning plate 9. In use, the liquid to be treated by reverse osmosis technology can enter the inlet chamber through the liquid inlet check valve 4. The liquid in the inlet chamber can enter the reverse osmosis chamber through the mesh holes on the positioning plate 9. A membrane unit is placed in the reverse osmosis chamber, and the liquid can be treated by reverse osmosis using the membrane unit.

[0022] The membrane unit includes a first membrane end plate 23, a permeate center tube 10, a second membrane end plate 31, and a reverse osmosis membrane 11. The reverse osmosis membrane 11 is disposed between the first membrane end plate 23 and the second membrane end plate 31, and is arranged around the permeate center tube 10. Specifically, the first membrane end plate 23 and the second membrane end plate 31 are located at opposite ends of the reverse osmosis membrane 11, for fixing and sealing the reverse osmosis membrane 11. The permeate center tube 10 runs through the entire membrane unit and is used to collect permeate. The reverse osmosis membrane 11 is tightly wrapped around the permeate center tube 10 in a spiral wound or other structural form to ensure uniform flow of feed water on the membrane surface and achieve efficient separation.

[0023] The first membrane end plate 23 has a central hole in its middle that is adapted to the product water central pipe 10, and water entering the product water central pipe 10 can be discharged through the central hole. A limiting plate 22 is provided on the inner side of the central hole. The limiting plate 22 has mesh holes evenly arranged on it to facilitate the discharge of water in the product water central pipe 10, and a through groove 30 is provided in the middle of the limiting plate 22.

[0024] A rotating shaft 17 is movably connected to the middle of the front cover. One end of the rotating shaft 17 is connected to a rotating handle 7, which is located outside the housing 1. The other end of the rotating shaft 17 is connected to a limiting rod 18, which is adapted to the through groove 30. When the front end is connected to the housing 1, the limiting rod 18 extends through the through groove 30 to the inner cavity of the water production center pipe 10. During the removal of the front cover, the front cover can drive the limiting rod 18 to move, so that the limiting rod 18 gradually approaches the limiting plate 22. When the front cover is separated from the housing 1 and the limiting rod 18 and the through groove 30 are misaligned, the limiting rod 18 and the inner side of the limiting plate 22 can be in a tight fit. The user can pull the membrane unit outward through the front cover, so that the user can skip the step of placing the front cover during the removal of the membrane unit, thereby improving the removal efficiency of the membrane unit. In addition, the limiting plate 22 and the limiting rod 18 form an effective force application point, which makes it easy for the user to pull the membrane unit outward, further improving the removal efficiency of the membrane unit and facilitating the replacement of the membrane unit. When the limiting rod 18 is aligned with the through groove 30, the limiting rod 18 can be separated from the membrane unit, which facilitates the replacement of the membrane unit.

[0025] As described above, the front cover and the membrane unit can form an integrated structure, enabling the membrane unit and the front cover to be disassembled in conjunction, simplifying the membrane unit replacement steps, providing a reliable force application point, improving the membrane unit disassembly efficiency, and the limiting rod 18 and the limiting plate 22 can form a mechanical self-locking mechanism, improving the fixing reliability of the front cover.

[0026] The front cover includes a rotating cover 2. A fixed tube 8 is connected to the outer ring of the inner side of the rotating cover 2. The fixed tube 8 is threaded to the other end of the housing 1. The inner cavity of the fixed tube 8 is provided with a reinforcing plate 13, an isolation plate 14 and a water inlet plate 15 in sequence. The reinforcing plate 13 is located on the side of the isolation plate 14 close to the rotating cover 2. A sealing plate 12 is provided between the reinforcing plate 13 and the rotating cover 2. The sealing plate 12 is used to increase the sealing between the rotating shaft 17 and the front cover. The material of the sealing plate 12 can be selected according to the requirements and is not limited here. The sealing plate 12, the reinforcing plate 13, the rotating cover 2 and the water inlet pipe 16 are all movably connected to the rotating shaft 17. The rotating shaft 17 has damping between the sealing plate 12, the reinforcing plate 13 and the rotating cover 2. Under the action of external force, the rotating shaft 17 can rotate. When the restriction on the rotating shaft 17 is released, the position of the rotating shaft 17 can remain unchanged.

[0027] A pure water chamber is formed between the reinforcing plate 13 and the isolation plate 14. A first drain hole 20 is provided on one side of the pure water chamber. A concentrated water chamber is formed between the isolation plate 14 and the water inlet plate 15. The water inlet plate 15 is evenly provided with mesh holes. The generated concentrated water can enter the concentrated water chamber through the water inlet plate 15. A second drain hole 19 is provided on one side of the concentration chamber. An external thread 21 is provided on the outer wall of the fixed tube 8. The external thread 21 is staggered with the first drain hole 20 and the second drain hole 19 to avoid the first drain hole 20 and the second drain hole 19 affecting the integrity of the external thread 21. An internal thread adapted to the external thread 21 is provided on the inner wall of the shell 1. The cooperation of the external thread 21 and the internal thread allows the fixed tube 8 to be threadedly connected to the shell 1, thereby enabling the connection between the front end cover and the shell 1.

[0028] A water inlet pipe 16 is connected to the middle of the isolation plate 14. The end of the water inlet pipe 16 away from the isolation plate 14 extends to the outside of the water inlet plate 15. When the front end cover is connected to the housing 1, the end of the water inlet pipe 16 away from the isolation plate 14 is inserted into the outside of the central hole. A sealing sleeve is provided on the outer surface of the water inlet pipe 16 to increase the sealing between the water inlet pipe 16 and the central hole. The material of the sealing sleeve can be selected according to requirements and is not limited here. Through the setting of the water inlet pipe 16, the treated pure water in the water production center pipe 10 can enter the pure water chamber through the water inlet pipe 16.

[0029] The other end of the housing 1 is provided with a concentrate discharge check valve 6 and a filter discharge check valve 5. When the front end cover is connected to the housing 1, the concentrate discharge check valve 6 is aligned with the second drain hole 19, and the filter discharge check valve 5 is aligned with the first drain hole 20. Pure water can be discharged through the filter discharge check valve 5, and concentrated water can be discharged through the concentrate discharge check valve 6.

[0030] As described above, the reverse osmosis membrane module adopts a side-mounted liquid inlet and outlet method, which can avoid the inlet and outlet liquid pipes affecting the replacement of the membrane unit and further improve the convenience of membrane unit replacement.

[0031] like Figure 5 As shown, this application proposes a reverse osmosis device, including a base 24 and a replaceable membrane assembly. A mounting bracket 25 and a pressure pump 26 are mounted on the top of the base 24. The membrane assembly is connected to the base 24 via the mounting bracket 25. The outlet of the pressure pump 26 is connected to the inlet of the membrane assembly via a connecting pipe 29. The concentrate outlet of the membrane assembly is connected to a concentrate outlet pipe 28, and the filtrate outlet is connected to a filtrate outlet pipe 27. During use, the liquid to be treated is pumped into the membrane assembly by the pressure pump 26. The membrane assembly performs partial osmosis treatment on the liquid through the membrane unit. The resulting pure water is discharged through the filtrate outlet pipe 27, and the concentrate produced during the treatment process is discharged through the concentrate outlet pipe 28.

[0032] In summary: When using this easily replaceable permeate membrane module and reverse osmosis unit, the liquid to be treated is pumped into the inlet chamber of the permeate membrane module by the pressure pump 26. The liquid in the inlet chamber enters the membrane unit through the mesh on the positioning plate 9. The membrane unit processes the liquid, and the resulting pure water enters the permeate central pipe 10 and is discharged through the inlet pipe 16, the pure water chamber, and the filtrate discharge pipe 27. The concentrate produced during the process enters the concentrate chamber and is discharged through the concentrate discharge pipe 28. When the membrane unit needs to be replaced, the user removes the front cover to separate the fixing pipe 8 from the housing 1. The user then adjusts the position of the limiting rod 18 as needed until the limiting rod 18 and the through groove 30 are misaligned. The user can then pull the membrane unit outward through the front cover and the limiting rod 18, improving the efficiency of membrane unit removal. Furthermore, the liquid flow pipe of the reverse osmosis unit will not affect the removal of the membrane unit during the removal process.

[0033] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each structure adopt conventional technical means such as bolt connection that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The materials of each component can be selected according to the requirements and are not limited here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art. Although the embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A replaceable permeation membrane assembly, comprising a housing (1), characterized in that: One end of the housing (1) is sealed by a rear end cover (3). A positioning plate (9) is provided in the inner cavity of one end of the housing (1). A water inlet cavity is formed between the positioning plate (9) and the rear end cover (3). A liquid inlet check valve (4) is provided on one side of the water inlet cavity. The other end of the housing (1) is sealed by a front end cover. A rotating shaft (17) is movably connected to the middle of the front end cover. A rotating handle (7) is connected to one end of the rotating shaft (17). The rotating handle (7) is located outside the housing (1). A limit rod (1) is connected to the other end of the rotating shaft (17). 8); A reverse osmosis cavity is formed between the front end cover and the positioning plate (9). A membrane unit is placed in the reverse osmosis cavity. The membrane unit includes a first membrane end plate (23) and a permeate center tube (10). A center hole adapted to the permeate center tube (10) is provided in the middle of the first membrane end plate (23). A limiting plate (22) is provided on the inner side of the center hole. A through groove (30) adapted to the limiting rod (18) is provided in the middle of the limiting plate (22). The limiting rod (18) extends to the inner cavity of the permeate center tube (10) through the through groove (30).

2. The easily replaceable permeation membrane assembly according to claim 1, characterized in that: The front cover includes a rotating cover (2). The outer ring of the inner side of the rotating cover (2) is connected to a fixed tube (8). The fixed tube (8) is threaded to the other end of the housing (1). The inner cavity of the fixed tube (8) is provided with a reinforcing plate (13), an isolation plate (14) and a water inlet plate (15) in sequence. The reinforcing plate (13) is located on the side of the isolation plate (14) close to the rotating cover (2). A pure water cavity is formed between the reinforcing plate (13) and the isolation plate (14). A first drain hole (20) is provided on one side of the pure water cavity. A concentrated water cavity is formed between the isolation plate (14) and the water inlet plate (15). A second drain hole (19) is provided on one side of the concentrated cavity. A water inlet pipe (16) is connected to the middle of the isolation plate (14). The end of the water inlet pipe (16) away from the isolation plate (14) extends to the outside of the water inlet plate (15).

3. The easily replaceable permeation membrane assembly according to claim 2, characterized in that: A sealing plate (12) is provided between the reinforcing plate (13) and the rotating cover (2). The sealing plate (12), the reinforcing plate (13), the rotating cover (2) and the water inlet pipe (16) are all movably connected to the rotating shaft (17).

4. The easily replaceable permeation membrane assembly according to claim 2, characterized in that: The water inlet plate (15), the limiting plate (22), and the positioning plate (9) are all uniformly provided with mesh holes.

5. The easily replaceable permeation membrane assembly according to claim 2, characterized in that: The other end of the housing (1) is provided with a one-way valve (6) for discharging concentrate and a one-way valve (5) for discharging filtrate. When the front end cap is connected to the housing (1), the one-way valve (6) for discharging concentrate is aligned with the second drain hole (19), and the one-way valve (5) for discharging filtrate is aligned with the first drain hole (20).

6. The easily replaceable permeation membrane assembly according to claim 1, characterized in that: The membrane unit also includes a second membrane end plate (31) and a reverse osmosis membrane (11). The reverse osmosis membrane (11) is disposed between the first membrane end plate (23) and the second membrane end plate (31), and the reverse osmosis membrane (11) is arranged around the product water central pipe (10).

7. A reverse osmosis device, characterized in that: The device includes a base (24) and a replaceable permeate membrane assembly as described in claim 1. The top of the base (24) is provided with a fixing frame (25) and a pressure pump (26). The permeate membrane assembly is connected to the base (24) through the fixing frame (25). The outlet end of the pressure pump (26) is connected to the inlet end of the permeate membrane assembly through a connecting pipe (29). The concentrate outlet end of the permeate membrane assembly is connected to a concentrate outlet pipe (28), and the filtrate outlet end of the permeate membrane assembly is connected to a filtrate outlet pipe (27).

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