Efficient off-line cleaning device for single R0 membrane

Abstract

The efficient single RO membrane off-line cleaning device comprises a cleaning water tank, an RO membrane element and a positioning seat are arranged at the upper end of the cleaning water tank, the upper end of the RO membrane element is sleeved with a pipe sleeve, and the front end of the pipe sleeve is fixedly connected with a water inlet; a circulating cleaning pump is arranged at the front end of the cleaning water tank, the water inlet end of the circulating cleaning pump is fixedly connected with the cleaning water tank through a water inlet pipe, the water outlet end of the circulating cleaning pump is fixedly connected with a water outlet pipe, and the end, away from the circulating cleaning pump, of the water outlet pipe is fixedly connected with a security filter. The upper end of the branch pipe is fixedly connected with a connecting pipe, and one end, far away from the branch pipe, of the connecting pipe is fixedly connected with the water inlet. By using a pipe sleeve insertion type cleaning mode, the operation steps during R membrane element cleaning are simplified, cleaning liquid is recycled according to the pollution characteristics of the R membrane element, cleaning is performed in a targeted manner, the cleaning effect is enhanced, the cleaning cost is saved, and the cleaning efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of reverse osmosis technology, and in particular to a highly efficient single-branch RO membrane offline cleaning device. Background Art

[0002] Reverse osmosis technology is the most sophisticated membrane separation technology. It applies an operating pressure greater than the natural osmotic pressure on the concentrated solution side, allowing the water molecules on the concentrated solution side to pass through the membrane to become purified water, effectively intercepting organic matter, colloids, dissolved salts, microorganisms, etc. in the water. After the reverse osmosis equipment has been running for a period of time, the membrane surface is prone to fouling and scaling. In order to ensure the normal operation of the reverse osmosis system, the performance and indicators of the membrane system must be checked regularly, and the reverse osmosis membrane elements must be cleaned when certain conditions are met.

[0003] The existing off-line cleaning technology is to remove the membrane elements in the membrane assembly and install them separately in the pressure vessel of the cleaning system, and use a pump to pump in acidic or alkaline cleaning liquid. The liquid after cleaning returns to the cleaning water tank. However, since the end plates of each pressure vessel need to be disassembled and installed during cleaning, and the membrane elements need to be fixed in the pressure vessel, the operation steps are complicated and time-consuming, so the cleaning efficiency of the existing off-line cleaning technology is low. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an efficient single-branch RO membrane offline cleaning device.

[0005] In order to achieve the above-mentioned object, the present invention adopts the following technical scheme: an efficient single R membrane offline cleaning device, comprising a cleaning water tank, an RO membrane element and a positioning seat are arranged at the upper end of the cleaning water tank, the RO membrane element and the positioning seat are both arranged in three groups, the RO membrane element is connected to the cleaning water tank through the positioning seat, the upper end of the RO membrane element is provided with a pipe sleeve, and the front end of the pipe sleeve is fixedly connected with a water inlet;

[0006] A circulating cleaning pump is arranged at the front end of the cleaning water tank, the water inlet end of the circulating cleaning pump is fixedly connected to the cleaning water tank through an inlet pipe, the water outlet end of the circulating cleaning pump is fixedly connected to an outlet pipe, and the end of the outlet pipe away from the circulating cleaning pump is fixedly connected to a safety filter; the upper part of the side end of the safety filter is fixedly connected to the main pipeline, the upper end of the main pipeline is fixedly connected to a branch pipe, three branch pipes are arranged, electric valves, flow meters and pressure gauges are installed on the branch pipes, and the electric valves, flow meters and pressure gauges are distributed on the branch pipes in sequence from bottom to top, the upper end of the branch pipe is fixedly connected to a connecting pipe, and the end of the connecting pipe away from the branch pipe is fixedly connected to the water inlet.

[0007] As a further description of the above technical solution:

[0008] The connecting pipe is a hose.

[0009] As a further description of the above technical solution:

[0010] A circular notch is provided on the upper end surface of the cleaning water tank, a grate is fixedly connected inside the circular notch, and the grate matches the RO membrane element; the positioning seat is located at the upper end of the circular notch.

[0011] As a further description of the above technical solution:

[0012] A PLC controller is fixedly connected to the side end of the cleaning water tank, and the PLC controller is electrically connected to the circulating cleaning pump and the electric valve respectively.

[0013] As a further description of the above technical solution:

[0014] A stepped hole is provided on the upper end surface of the pipe sleeve, a sealing column is arranged inside the stepped hole, the lower end of the sealing column is inserted into the RO membrane element, and a plug is fixedly connected to the lower end of the sealing column.

[0015] As a further description of the above technical solution:

[0016] The inner arc surface of the positioning seat is provided with a protrusion, and the protrusion corresponds to the groove of the RO membrane element.

[0017] The present invention has the following beneficial effects:

[0018] Compared with the prior art, this highly efficient single R membrane offline cleaning device simplifies the operation steps of R membrane element cleaning by using a sleeve insertion cleaning method. According to the pollution characteristics of the R membrane element, the cleaning liquid is recycled and targeted for cleaning to enhance the cleaning effect, which not only saves the cleaning cost but also improves the cleaning efficiency. Compared with the ordinary reverse osmosis offline cleaning device, the present invention does not need to use a pressure vessel, does not need to install and disassemble the end plate, uses a PLC controller to operate, can meet the simultaneous cleaning of different numbers of R0 membrane elements, has simple operation steps, and effectively improves the cleaning efficiency of the R0 membrane element. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of an efficient single R0 membrane offline cleaning device proposed by the present invention;

[0020] Figure 2 This is a schematic diagram of the internal structure of an efficient single R0 membrane offline cleaning device proposed by the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of a cleaning water tank of an efficient single R0 membrane offline cleaning device proposed by the present invention;

[0022] Figure 4This is a schematic diagram of the structure of an efficient single RO membrane offline cleaning device proposed by the present invention after the tube sleeve and the RO membrane element are separated;

[0023] Figure 5 This is a structural schematic diagram of a positioning seat for an efficient single-branch R0 membrane offline cleaning device proposed in the present invention.

[0024] Legend:

[0025] 1. Cleaning water tank; 2. Water inlet pipe; 3. Circulating cleaning pump; 4. Water outlet pipe; 5. Safety filter; 6. Main pipeline; 7. Branch pipe; 8. Electric valve; 9. Flow meter; 10. Pressure gauge; 11. Connecting pipe; 12. Circular notch; 13. Pipe sleeve; 14. RO membrane element; 15. Positioning seat; 1501, protrusion; 16. Sealing column; 17. Plug; 18. Step hole; 19. Water inlet; 20. PLC controller; 21. Grate. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Reference Figure 1-5 The present invention provides an efficient single RO membrane offline cleaning device, comprising a cleaning water tank 1, an RO membrane element 14 and a positioning seat 15 are arranged at the upper end of the cleaning water tank 1, and the RO membrane element 14 and the positioning seat 15 are both arranged in three groups, the RO membrane element 14 is connected to the cleaning water tank 1 through the positioning seat 15, and the upper end of the RO membrane element 14 is sleeved with a pipe sleeve 13, and the front end of the pipe sleeve 13 is fixedly connected with a water inlet 19;

[0028] A circulating cleaning pump 3 is arranged at the front end of the cleaning water tank 1, and the water inlet end of the circulating cleaning pump 3 is fixedly connected to the cleaning water tank 1 through the water inlet pipe 2, and the water outlet end of the circulating cleaning pump 3 is fixedly connected to the water outlet pipe 4, and the end of the water outlet pipe 4 away from the circulating cleaning pump 3 is fixedly connected to the safety filter 5; the upper part of the side end of the safety filter 5 is fixedly connected to the main pipeline 6, and the upper end of the main pipeline 6 is fixedly connected to the branch pipe 7, and three branch pipes 7 are arranged, and an electric valve 8, a flow meter 9 and a pressure gauge 10 are installed on the branch pipe 7, and the electric valve 8, the flow meter 9 and the pressure gauge 10 are distributed on the branch pipe 7 from bottom to top in sequence, and the upper end of the branch pipe 7 is fixedly connected to the connecting pipe 11, and the end of the connecting pipe 11 away from the branch pipe 7 is fixedly connected to the water inlet 19.

[0029] Specifically, when in use, first install the RO membrane element 14 into the positioning seat 15, then put the pipe sleeve 13 on the upper end of the RO membrane element 14, and then the circulating cleaning pump 3 works. At this time, the cleaning liquid in the cleaning water tank 1 can be extracted under the action of the water inlet pipe 2, and then enters the security filter 5 through the water outlet pipe 4. The cleaning liquid is filtered through the security filter 5 to filter out impurities in the cleaning liquid. The filtered cleaning liquid enters the main pipeline 6, and then enters the branch pipe 7. The electric valve 8 is opened according to the use requirements, and the cleaning liquid in the branch pipe 7 will flow. When it flows through the flow meter 9, it The size of the flow rate can be clearly observed. After the cleaning liquid flows out of the branch pipe 7, it enters the inside of the connecting pipe 11, and then enters the inside of the pipe sleeve 13 from the water inlet 19. At this time, the cleaning liquid can clean the RO membrane element 14, so that the waste liquid after cleaning flows directly into the cleaning water tank 1 from the concentrated water flow channel and the water production pipe at the bottom of the RO membrane element 14, thereby realizing the collection of the waste liquid. In this way, when cleaning the RO membrane element 14, the operation steps of cleaning the R0 membrane element are simplified. According to the pollution characteristics of the R0 membrane element, the cleaning liquid is recycled and targetedly cleaned to enhance the cleaning effect, which not only saves the cleaning cost but also improves the cleaning efficiency.

[0030] The connecting pipe 11 is a hose. During operation, since the connecting pipe 11 is a hose, it is not only convenient for workers to set the pipe sleeve 13, but the hose can also reduce the pressure shock caused by backwashing.

[0031] A circular notch 12 is provided on the upper end surface of the cleaning water tank 1, and a grate 21 is fixedly connected inside the circular notch 12, and the grate 21 matches the RO membrane element 14; the positioning seat 15 is located at the upper end of the circular notch 12. When working, the circular notch 12 is provided, and the grate 21 is installed inside the circular notch 12. Under the action of the grate 21, the RO membrane element 14 can be supported. Since holes are provided on the grate 21, it is also convenient for the waste water for cleaning the RO membrane element 14 to flow into the cleaning water tank 1, which is beneficial to the circulation of the cleaning liquid, thereby reducing the waste of water resources.

[0032] A PLC controller 20 is fixedly connected to the side end of the cleaning water tank 1, and the PLC controller 20 is electrically connected to the circulating cleaning pump 3 and the electric valve 8 respectively. When working, the PLC controller 20 is set to control the circulating cleaning pump 3 and the electric valve 8 respectively. At this time, different numbers of R0 membrane elements can be cleaned at the same time. The operation steps are simple, and the cleaning efficiency of the R0 membrane elements is effectively improved.

[0033] A stepped hole 18 is provided on the upper end surface of the pipe sleeve 13, and a sealing column 16 is arranged inside the stepped hole 18. The lower end of the sealing column 16 is inserted into the RO membrane element 14, and a plug 17 is fixedly connected to the lower end of the sealing column 16. When working, the sealing column 16 passes through the stepped hole 18 on the pipe sleeve 13 and is inserted into the RO membrane element 14, so that the RO membrane element 14 can be positioned; at the same time, the plug 17 can prevent water from flowing out of the water production pipeline.

[0034] A protrusion 1501 is provided on the inner arc surface of the positioning seat 15, and the protrusion 1501 corresponds to the groove of the RO membrane element 14. When working, the RO membrane element 14 is installed inside the positioning seat 15. Since the protrusion 1501 corresponds to the groove of the RO membrane element 14, the RO membrane element 14 can be positioned.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An efficient single-tube RO membrane off-line cleaning device, comprising a cleaning water tank (1), characterized in that: An RO membrane element (14) and a positioning seat (15) are arranged at the upper end of the cleaning water tank (1), and the RO membrane element (14) and the positioning seat (15) are each arranged in three groups. The RO membrane element (14) is connected to the cleaning water tank (1) via the positioning seat (15). A pipe sleeve (13) is sleeved on the upper end of the RO membrane element (14), and a water inlet (19) is fixedly connected to the front end of the pipe sleeve (13); A circulating cleaning pump (3) is arranged at the front end of the cleaning water tank (1); the water inlet end of the circulating cleaning pump (3) is fixedly connected to the cleaning water tank (1) through a water inlet pipe (2); the water outlet end of the circulating cleaning pump (3) is fixedly connected to a water outlet pipe (4); the end of the water outlet pipe (4) away from the circulating cleaning pump (3) is fixedly connected to a safety filter (5); the upper part of the side end of the safety filter (5) is fixedly connected to a main pipeline (6); the upper end of the main pipeline (6) is fixedly connected to a branch pipe (7); three branch pipes (7) are arranged; an electric valve (8), a flow meter (9) and a pressure gauge (10) are installed on the branch pipe (7); the electric valve (8), the flow meter (9) and the pressure gauge (10) are sequentially distributed on the branch pipe (7) from bottom to top; the upper end of the branch pipe (7) is fixedly connected to a connecting pipe (11); the end of the connecting pipe (11) away from the branch pipe (7) is fixedly connected to the water inlet (19).

2. According to claim 1, a highly efficient single RO membrane off-line cleaning device is characterized in that: The connecting pipe (11) is a hose.

3. According to claim 1, a highly efficient single RO membrane off-line cleaning device is characterized in that: The upper end surface of the cleaning water tank (1) is provided with a circular notch (12), a grate (21) is fixedly connected inside the circular notch (12), and the grate (21) matches the RO membrane element (14); the positioning seat (15) is located at the upper end of the circular notch (12).

4. According to claim 1, a highly efficient single RO membrane off-line cleaning device is characterized in that: A PLC controller (20) is fixedly connected to the side end of the cleaning water tank (1), and the PLC controller (20) is electrically connected to the circulating cleaning pump (3) and the electric valve (8) respectively.

5. The efficient single RO membrane off-line cleaning device according to claim 1, characterized in that: The upper end surface of the pipe sleeve (13) is provided with a stepped hole (18), a sealing column (16) is arranged inside the stepped hole (18), the lower end of the sealing column (16) is inserted into the RO membrane element (14), and the lower end of the sealing column (16) is fixedly connected with a plug (17).

6. The efficient single RO membrane off-line cleaning device according to claim 1, characterized in that: The inner arc surface of the positioning seat (15) is provided with a protrusion (1501), and the protrusion (1501) corresponds to the groove of the RO membrane element (14).

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