Reverse osmosis membrane shell device for sectional switching cleaning

Abstract

The reverse osmosis membrane shell device comprises a protective shell, a water inlet pipe is arranged on one side of the protective shell, a water inlet valve is arranged on the outer circle wall of the water inlet pipe, a cleaning switching pipe is arranged on one side of the protective shell, and a cleaning switching valve is arranged on the outer circle wall of the cleaning switching pipe. A concentrated water pipe is arranged on one side of the protective shell, a concentrated water valve is arranged on the outer circle wall of the concentrated water pipe, a water producing pipe is arranged on one side of the protective shell, and a water producing valve is arranged on the outer circle wall of the water producing pipe. According to the reverse osmosis membrane shell device capable of being cleaned in a segmented switching mode, effective filtration can be conducted through the protective shell, the water inlet pipe, the concentrated water pipe and the generation pipe, produced water and concentrated water can be distinguished, a reverse osmosis membrane assembly in the device can be effectively cleaned in a segmented mode through the water inlet pipe, the cleaning switching pipe, the concentrated water pipe and the produced water pipe, and the reverse osmosis membrane assembly can be used in cooperation; the device can be cleaned in a segmented mode, and the problems that off-line cleaning is high in labor intensity and system operation cannot be recovered in time are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment, in particular to a reverse osmosis membrane shell device for segmented switching and cleaning. Background Art

[0002] Reverse osmosis membrane separation technology is a technology that uses semipermeable membranes to achieve selective separation. Reverse osmosis membranes are widely used in chemical, pharmaceutical, seawater desalination and environmental protection fields due to their good physical properties and separation effects. The pore size of the reverse osmosis membrane is very small. While effectively removing pollutants such as salts, colloids, microorganisms, and organic matter in the water, it is also contaminated by insoluble substances. These pollutants are deposited on the membrane surface, resulting in reduced treatment effect of the reverse osmosis system and deterioration of the quality of the produced water. The membrane pollution of the reverse osmosis membrane system develops slowly. If no measures are taken in the early stage, the pollution will damage the performance of the membrane element in a relatively short time. Generally speaking, when the reverse osmosis membrane system has the following phenomena, it indicates that the membrane element is contaminated and should be cleaned in time: First, under normal pressure, the product water flow rate drops by 10-15% of the normal value; second, in order to maintain the normal product water flow rate, the water supply pressure increases by 10-15%; third, the salt permeability of the product water increases by 10-15%. These membrane fouling phenomena will reduce the water output of the reverse osmosis membrane system, increase the water supply pressure, reduce the product water quality, and increase the cleaning frequency and water production cost of the reverse osmosis membrane system.

[0003] At present, reverse osmosis devices are often integrated with multiple membrane shells on one device, and multiple reverse osmosis membrane cores are installed in one membrane shell. When sewage flows through the same membrane shell, under the action of water supply pressure, while part of the water passes through the reverse osmosis membrane, colloids, metal oxides, bacteria, organic matter and other substances will accumulate on the concentrated water side of the reverse osmosis membrane. The pollution degree of the front membrane core surface is more serious than that of the rear membrane shell; the rear membrane core is mainly polluted by scaling pollution due to the precipitation of insoluble salts. After a period of operation, scaling pollution will cause the pressure difference of a single membrane element to increase, and even telescope phenomenon may occur, causing damage to the physical structure of the membrane element. The traditional membrane shell generally performs online cleaning of the reverse osmosis membrane core through the water inlet and concentrated water inlet at both ends. It cannot effectively perform reasonable cleaning according to the different pollution conditions of the front and rear membrane cores, affecting the operation effect of the reverse osmosis system. In severe cases, it will aggravate the pollution of the reverse osmosis membrane, while avoiding the high labor intensity of offline cleaning and the problem of being unable to restore the system operation in time. Utility Model Content

[0004] The utility model aims to provide a reverse osmosis membrane shell device with segmented switching cleaning to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a reverse osmosis membrane shell device with segmented switching cleaning, comprising a protective shell, a water inlet pipe is arranged on one side of the protective shell, a water inlet valve is arranged on the outer circular wall of the water inlet pipe, a cleaning switching pipe is arranged on one side of the protective shell, a cleaning switching valve is arranged on the outer circular wall of the cleaning switching pipe, a concentrate water pipe is arranged on one side of the protective shell, a concentrate water valve is arranged on the outer circular wall of the concentrate water pipe, a water production pipe is arranged on one side of the protective shell, and a water production valve is arranged on the outer circular wall of the water production pipe.

[0006] Preferably, a reverse osmosis membrane shell is arranged inside the protective shell, a water inlet side end plate is arranged at one end of the reverse osmosis membrane shell, and a water production side end plate is arranged at one end of the reverse osmosis membrane shell.

[0007] Preferably, a raw water interface is provided on one side of the reverse osmosis membrane shell, a cleaning switching port is provided on one side of the reverse osmosis membrane shell, a concentrated water interface is provided on one side of the reverse osmosis membrane shell, and a produced water interface is provided on one side of the reverse osmosis membrane shell.

[0008] Preferably, a water production plug is disposed inside one end of the reverse osmosis membrane shell, and a water production central tube is disposed inside one end of the reverse osmosis membrane shell.

[0009] Preferably, five reverse osmosis membrane cores are arranged inside the reverse osmosis membrane shell, and a concentrated water sealing ring is arranged on one side of the reverse osmosis membrane core.

[0010] Preferably, a membrane core connection block is provided on one side of the concentrated water sealing ring, and two connecting through pipes are provided on both sides of the membrane core connection block.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The reverse osmosis membrane shell device with segmented switching cleaning can effectively filter and distinguish between produced water and concentrated water by means of the protective shell and the water inlet pipe, the concentrate pipe and the production pipe. The reverse osmosis membrane components inside the device can be effectively cleaned in segments by means of the water inlet pipe and the cleaning switching pipe, the concentrate pipe and the production pipe. By using them in coordination with each other, the device can be cleaned in segments and the high labor intensity of offline cleaning and the problem of being unable to restore system operation in time can be avoided.

[0013] This reverse osmosis membrane shell device with segmented switching cleaning can effectively control the dredging state of each pipeline through the set water inlet valve, concentrate valve and water production valve, and effectively filter and separate the raw water through the dredging state. The dredging state of each pipeline can be effectively controlled through the set water inlet valve and cleaning switching valve, concentrate valve and water production valve, so that the staff can accurately flush a certain section and ensure that the device can be effectively cleaned. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional exploded view of the utility model;

[0015] Figure 2 This is an exploded view of the protective housing of the utility model;

[0016] Figure 3 This is an exploded view of the reverse osmosis membrane shell of the utility model;

[0017] Figure 4 This is an exploded view of the reverse osmosis membrane core of the utility model.

[0018] In the figure: 1. Protective shell; 2. Water inlet pipe; 3. Water inlet valve; 4. Cleaning switching pipe; 5. Cleaning switching valve; 6. Brine pipe; 7. Brine valve; 8. Production pipe; 9. Production valve; 10. Reverse osmosis membrane shell; 11. End plate on the water inlet side; 12. End plate on the production water side; 13. Raw water interface; 14. Cleaning switching port; 15. Brine interface; 16. Production water interface; 17. Production water plug; 18. Production water center pipe; 19. Reverse osmosis membrane core; 20. Brine sealing ring; 21. Membrane core connecting block; 22. Connecting pipe. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] like Figure 1-4As shown, the utility model provides a technical solution: a reverse osmosis membrane shell device with segmented switching cleaning, comprising a protective shell 1, the protective shell 1 is used to protect internal components to ensure that the internal components will not leak when filtering raw water and cleaning, a water inlet pipe 2 is arranged on one side of the protective shell 1, the water inlet pipe 2 is used to access raw water, and at the same time ensure that raw water can enter the device through the water inlet pipe 2 for filtration, a water inlet valve 3 is arranged on the outer circular wall of the water inlet pipe 2, the water inlet valve 3 is used to control the dredging state of the water inlet pipe, and ensure that the dredging state of the water inlet pipe 2 can be freely adjusted, and a cleaning switching pipe 4 is arranged on one side of the protective shell 1, the cleaning switching pipe 4 is used to access cleaning water to ensure that cleaning water can enter the device to filter the inside of the device Flushing is performed, and a cleaning switching valve 5 is provided on the outer circular wall of the cleaning switching pipe 4. The cleaning switching valve 5 is used to control the dredging state of the cleaning switching pipe 4 to ensure that the dredging state of the cleaning switching pipe 4 can be freely adjusted. A concentrated water pipe 6 is provided on one side of the protective shell 1. The concentrated water pipe 6 is used to guide the concentrated water produced after filtration to be discharged, and at the same time, it is convenient for the staff to collect the concentrated water. A concentrated water valve 7 is provided on the outer circular wall of the concentrated water pipe 6. The concentrated water valve 7 is used to control the dredging state of the concentrated water pipe 6 to ensure that the dredging state of the concentrated water pipe 6 can be freely adjusted. A water production pipe 8 is provided on one side of the protective shell 1. The water production pipe 8 is used to guide the clean water after filtration to be discharged, and at the same time, it is convenient for the staff to collect the clean water. The outer circular wall of the water production pipe 8 is provided with a water production valve 9 The water production valve 9 is used to control the dredging state of the water production pipe 8 to ensure that the dredging state of the water production pipe 8 can be freely adjusted. A reverse osmosis membrane shell 10 is arranged inside the protective shell 1. The reverse osmosis membrane shell 10 is used to protect the internal reverse osmosis core components and ensure that the concentrated water and clean water after filtration can be effectively distinguished. An inlet side end plate 11 is arranged at one end of the reverse osmosis membrane shell 10. The inlet side end plate 11 is used to fix one end of the reverse osmosis membrane shell 10 to ensure that the reverse osmosis membrane shell 10 will not be affected by the kinetic energy of the water flow when the device is operating. A water production side end plate 12 is arranged at one end of the reverse osmosis membrane shell 10. The water production side end plate 12 is used to fix one end of the reverse osmosis membrane shell 10 to ensure that the reverse osmosis membrane shell 10 will not be affected by the kinetic energy of the water flow when the device is operating. A raw water interface 13 is provided on one side of the reverse osmosis membrane shell 10, and the raw water interface 13 is used to connect the water inlet pipe 2 to ensure that the raw water can enter the reverse osmosis membrane shell 10. A cleaning switching port 14 is provided on one side of the reverse osmosis membrane shell 10, and the cleaning switching port 14 is used to connect the cleaning switching pipe 4 to ensure that the cleaning water can enter the reverse osmosis membrane shell 10. A concentrated water interface 15 is provided on one side of the reverse osmosis membrane shell 10, and the concentrated water interface 15 is used to connect the concentrated water pipe 6 to ensure that the concentrated water filtered inside the reverse osmosis membrane shell 10 can be discharged from the concentrated water pipe 6. A produced water interface 16 is provided on one side of the reverse osmosis membrane shell 10, and the produced water interface 16 is used to connect the produced water pipe 8 to ensure that the clean water filtered inside the reverse osmosis membrane shell 10 can be discharged from the produced water pipe 8.

[0021] A water production plug 17 is provided inside one end of the reverse osmosis membrane shell 10, and the water production plug 17 is used to block a section of the reverse osmosis membrane core 19 to prevent the purified water produced after filtration from flowing out in reverse. A water production center pipe 18 is provided inside one end of the reverse osmosis membrane shell 10, and the water production center pipe 18 is used to guide the produced purified water to ensure that the purified water will not be mixed with concentrated water during the discharge process. Five reverse osmosis membrane cores 19 are provided inside the reverse osmosis membrane shell 10, and the reverse osmosis membrane cores 19 are used to perform reverse osmosis filtration on raw water to ensure that the raw water can be effectively filtered. One side of the reverse osmosis membrane core 19 is provided with The concentrated water sealing ring 20 is used to seal the connection between the reverse osmosis membrane core 19 and other reverse osmosis membrane cores 19 to prevent the concentrated water from flowing back and polluting the clean water produced after filtration. A membrane core connecting block 21 is provided on one side of the concentrated water sealing ring 20. The membrane core connecting block 21 is used to connect the reverse osmosis membrane core 19 to ensure that the device can perform multiple reverse osmosis filtration on the raw water. Two connecting pipes 22 are provided on both sides of the membrane core connecting block 21. The connecting pipes 22 are used to connect two reverse osmosis membrane cores 19 to ensure that the filtered water can pass through the inside of multiple reverse osmosis membrane cores 19 without being affected by the concentrated water.

[0022] Working principle: The filtered water opens the water inlet valve 3, the concentrated water valve 7 and the water production valve 9, so that the raw water enters from the water inlet pipe 2, the filtered concentrated water is discharged from the concentrated water pipe 6, and the filtered clean water is discharged from the water production pipe 8. When cleaning the entire section, the water inlet valve 3 and the concentrated water valve 7 are opened, and the cleaning water enters from the water inlet pipe 2 and is discharged from the concentrated water pipe 6 to clean the entire section of the inside of the protective shell 1. When cleaning the front section, the water inlet valve 3 and the cleaning switching valve 5 are opened, and the cleaning water enters from the water inlet pipe 2 and is discharged from the cleaning switching pipe 4 to clean the front section of the inside of the protective shell 1. When cleaning the back section, the cleaning switching valve 5 and the concentrated water valve 7 are opened, and the cleaning water enters from the cleaning switching pipe 4 and is discharged from the concentrated water pipe 6 to clean the back end of the inside of the protective shell 1.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A reverse osmosis membrane shell device for segmented switching cleaning, comprising a protective shell (1), characterized in that: A water inlet pipe (2) is provided on one side of the protective shell (1), and a water inlet valve (3) is provided on the outer circular wall of the water inlet pipe (2); a cleaning switching pipe (4) is provided on one side of the protective shell (1), and a cleaning switching valve (5) is provided on the outer circular wall of the cleaning switching pipe (4); a concentrated water pipe (6) is provided on one side of the protective shell (1), and a concentrated water valve (7) is provided on the outer circular wall of the concentrated water pipe (6); a water production pipe (8) is provided on one side of the protective shell (1), and a water production valve (9) is provided on the outer circular wall of the water production pipe (8).

2. A reverse osmosis membrane shell device for segmented switching and cleaning according to claim 1, characterized in that: A reverse osmosis membrane shell (10) is arranged inside the protective shell (1), a water inlet side end plate (11) is arranged at one end of the reverse osmosis membrane shell (10), and a water production side end plate (12) is arranged at one end of the reverse osmosis membrane shell (10).

3. A reverse osmosis membrane shell device for segmented switching and cleaning according to claim 2, characterized in that: A raw water interface (13) is provided on one side of the reverse osmosis membrane shell (10), a cleaning switching port (14) is provided on one side of the reverse osmosis membrane shell (10), a concentrated water interface (15) is provided on one side of the reverse osmosis membrane shell (10), and a produced water interface (16) is provided on one side of the reverse osmosis membrane shell (10).

4. A reverse osmosis membrane shell device for segmented switching and cleaning according to claim 2 or 3, characterized in that: A water production plug (17) is disposed inside one end of the reverse osmosis membrane shell (10), and a water production central tube (18) is disposed inside one end of the reverse osmosis membrane shell (10).

5. A reverse osmosis membrane shell device for segmented switching and cleaning according to claim 2, 3 or 4, characterized in that: Five reverse osmosis membrane cores (19) are arranged inside the reverse osmosis membrane shell (10), and a concentrated water sealing ring (20) is arranged on one side of the reverse osmosis membrane core (19).

6. A reverse osmosis membrane shell device for segmented switching and cleaning according to claim 5, characterized in that: A membrane core connection block (21) is provided on one side of the concentrated water sealing ring (20), and two connecting through pipes (22) are provided on both sides of the membrane core connection block (21).

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