Reverse osmosis membrane element cleaning equipment

Abstract

The reverse osmosis membrane element cleaning equipment comprises a workbench, a cleaning medicine box, a cleaning pump, a security filter, a membrane shell cleaning assembly, a temperature control assembly and a power distribution control box, and the temperature control assembly comprises a heating assembly and a refrigerating assembly; the cleaning membrane shell assembly comprises at least one cleaning membrane shell, the cleaning membrane shell comprises a shell body, one end of the shell body is provided with a first end cover, the other end of the shell body is detachably connected with a second end cover in a sealed mode, the second end cover is located in the shell body, and a set distance is formed between the second end cover and the end face of the shell body at the corresponding end; one end of the shell close to the first end cover is provided with a water inlet, and one end of the shell close to the second end cover is provided with a water outlet; the water outlet is communicated to the cleaning medicine box through a water outlet pipeline, and an electric valve is arranged on the water outlet pipeline; the heating assembly comprises an electric heating piece, the electric heating piece is arranged on the water inlet pipeline, the refrigerating assembly comprises a coil pipe and a refrigerator, and the coil pipe is wound on the outer wall of the cleaning medicine box. The cleaning temperature can be controlled in real time, continuous off-line cleaning is achieved, the risk that liquid medicine overflows when the reverse osmosis membrane element is disassembled is avoided, and safety and high efficiency are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of membrane cleaning equipment, in particular to a reverse osmosis membrane element cleaning equipment. Background Art

[0002] Reverse osmosis membrane elements are the core components of reverse osmosis equipment, accounting for more than 50% of equipment investment, and their replacement costs account for more than 80% of operating costs. The reverse osmosis membrane in the reverse osmosis membrane element is easily contaminated during use, affecting the normal operation of the reverse osmosis equipment. The reverse osmosis membrane element needs to be cleaned to remove pollutants on the surface of the reverse osmosis membrane and restore its performance.

[0003] At present, there are two ways to clean reverse osmosis membrane elements: online cleaning and offline cleaning. Online cleaning means cleaning the reverse osmosis membrane element directly without disassembling it. The operation is simple, but the cleaning effect is not ideal, the cleaning time is long, and it may cause corrosion damage to the reverse osmosis equipment; offline cleaning means removing the contaminated reverse osmosis membrane element from the reverse osmosis equipment and using professional cleaning equipment for targeted cleaning treatment, and the cleaning effect is relatively good.

[0004] In the related art, the offline cleaning equipment of reverse osmosis membrane elements usually includes a workbench and a cleaning medicine box, a cleaning pump, a safety filter and a cleaning membrane shell fixed on the workbench. The cleaning membrane shell includes a shell and two end covers respectively sealed and connected to the two ends of the shell. The shell is provided with a water inlet and a water outlet at intervals. One of the end covers is provided with a water production port, and the other end cover is used for disassembling and assembling the reverse osmosis membrane element to be cleaned. The cleaning medicine box is connected to the cleaning pump and the safety filter through pipelines in turn. The outlet of the safety filter is connected to the water inlet of the cleaning membrane shell through the water inlet pipeline. The water outlet of the cleaning membrane shell is connected to the cleaning medicine box through the water outlet pipeline. The water production port of the cleaning membrane shell is connected to the cleaning medicine box through the water production pipeline. When in use, load the reverse osmosis membrane element into the cleaning membrane shell, start the cleaning pump, and the liquid medicine in the cleaning medicine box enters the security filter under the action of the cleaning pump. The filtered liquid medicine enters the cleaning membrane shell through the water inlet pipeline to clean the reverse osmosis membrane element. The cleaned liquid medicine flows back to the cleaning medicine box through the water outlet pipeline, and the filtered clean water produced by the reverse osmosis membrane element flows back to the cleaning medicine box through the water production pipeline. In this way, the cleaning cycle is carried out. At the same time, the staff monitors the liquid medicine pressure value and pH value entering and exiting the cleaning membrane shell, and operates the corresponding valve adjustment according to the detected values. After cleaning, the liquid medicine is discharged from the sewage outlet at the bottom of the cleaning medicine box.

[0005] In the above technical scheme, the offline cleaning effect is relatively good, but it is greatly affected by the cleaning temperature and the pH of the cleaning solution. Too high a cleaning temperature will damage the performance of the membrane element and cannot be cleaned continuously. Too low a cleaning temperature is not conducive to the dissolution of the cleaning agent, resulting in poor cleaning effect, complicated equipment operation, and high operating costs. After cleaning, a large amount of residual cleaning solution will flow out of the cleaning membrane shell during the disassembly of the reverse osmosis membrane element, which will corrode the equipment and endanger the safety of the operator. Utility Model Content

[0006] In order to solve at least one of the problems mentioned in the background technology, an embodiment of the present application provides a reverse osmosis membrane element cleaning equipment, in which the medicine solution is controlled to be within an appropriate temperature range through a temperature control component and a temperature sensor, and the water inlet and the water outlet are arranged at both ends of the lower surface of the cleaning membrane shell. After cleaning is completed, the electric valve on the outlet pipe is automatically delayed to open through the distribution control box, so that the residual medicine solution in the cleaning membrane shell flows into the cleaning medicine box by gravity, so that continuous cleaning can be realized and the cleaning operation can be controlled in real time. When the reverse osmosis membrane element is disassembled, the residual medicine solution can be recovered by gravity, thereby improving the cleaning efficiency and safety and reducing the operating cost.

[0007] The embodiment of the present application provides a reverse osmosis membrane element cleaning device, including a workbench, a cleaning medicine box, a cleaning pump, a safety filter, a cleaning membrane shell, a temperature control component and a power distribution control box, wherein a temperature sensor and a pH sensor are arranged in the cleaning medicine box, and the temperature control component includes a heating component and a refrigeration component;

[0008] The cleaning membrane shell assembly comprises at least one cleaning membrane shell for correspondingly installing a reverse osmosis membrane element, the cleaning membrane shell comprises a shell extending in a horizontal direction, a first end cover is arranged at one end of the shell, a water outlet is provided on the first end cover, the other end of the shell is detachably sealed and connected to a second end cover, the second end cover is located inside the shell and has a set distance from the end surface of the shell at the corresponding end; a water inlet is arranged at one end of the shell close to the first end cover, a water outlet is arranged at one end of the shell close to the second end cover, the water inlet and the water outlet are located on the same axis of the shell, and are both provided on the lower surface of the shell;

[0009] The cleaning medicine box, the cleaning pump and the safety filter are connected in sequence through pipelines, the outlet of the safety filter is connected to the water inlet through a water inlet pipeline; the water outlet is connected to the cleaning medicine box through a water outlet pipeline, an electric valve is provided on the water outlet pipeline, and the water outlet is connected to the cleaning medicine box through a water outlet pipeline;

[0010] The heating assembly includes an electric heating element, which is arranged on the water inlet pipe and is used to heat the liquid medicine in the water inlet pipe; the refrigeration assembly includes a coil and a refrigerator, which is arranged on the workbench, the coil is wound around the outer wall of the cleaning medicine box, and the coil is connected to the refrigerator through a pipe;

[0011] A controller electrically connected to the temperature sensor and the pH sensor is arranged in the power distribution control box, and control ends of the cleaning pump, the electric valve and the temperature control component are all arranged in the power distribution control box and electrically connected to the controller.

[0012] In an achievable embodiment, the second end cover is sealed and connected to the housing through a plurality of stoppers, and the plurality of stoppers are evenly distributed in the circumferential direction in the housing;

[0013] The inner wall of the shell is respectively provided with positioning grooves corresponding to the stoppers, and the outer edge of each stopper is embedded in the positioning groove. The inner edge of the stopper extending out of the positioning groove is connected with the second end cover bolt.

[0014] In a feasible implementation, the number of the stoppers is 3, and the stoppers are arc-shaped or crescent-shaped.

[0015] In a feasible embodiment, the electric heating element includes a heating coil, which is wound and fixed on the outside of the pipe section of the water inlet pipe close to the water inlet, and the outside of the heating coil is covered with a coil protection shell; the control end of the heating coil is arranged in the power distribution control box and is electrically connected to the controller.

[0016] In a feasible implementation, an agitator is provided in the cleaning medicine box, the agitator blades of the agitator are arranged close to the bottom of the cleaning medicine box, and the drive motor of the agitator is arranged at the top of the cleaning medicine box.

[0017] In a feasible implementation, the safety filter, the water outlet pipe and the water production pipe are respectively provided with pressure gauges electrically connected to the controller.

[0018] In a feasible implementation, the workbench is a frame structure, and a drain valve is provided at the bottom of the cleaning medicine box.

[0019] In one possible implementation, the refrigerant in the refrigeration component includes liquid nitrogen.

[0020] In a feasible embodiment, the workbench comprises a membrane shell fixing frame, and the cleaning membrane shell is fixed on the membrane shell fixing frame and is arranged higher than the cleaning medicine box.

[0021] In a feasible implementation, the bottom of the workbench is provided with universal wheels.

[0022] In summary, the reverse osmosis membrane element cleaning equipment provided by the present application has a temperature sensor that monitors the temperature of the drug solution in real time, and the power distribution control box controls the temperature control component to heat or cool the drug solution according to the real-time temperature data, which is helpful for the dissolution of the drug and keeps the temperature of the drug solution within a suitable cleaning range, thereby realizing continuous cleaning of the reverse osmosis membrane element, shortening the total cleaning time, and improving the cleaning efficiency; a water inlet and a water outlet are arranged at both ends of the lower surface of the cleaning membrane shell, and the power distribution control box provides two operating options: a cleaning mode and a membrane removal mode. After the reverse osmosis membrane element is loaded into the cleaning membrane shell, the cleaning mode is started for thorough cleaning. Wash; after cleaning, the second end cover is removed from the shell, the distance between the second end cover and the corresponding shell port is set, and the second end cover is kept in the shell, and then the membrane removal mode is started, and the cleaning pump is started through the power distribution control box. Under the action of the set water pressure, the second end cover is pushed and moved in the shell and does not fall out of the shell. Then the cleaning pump is closed, and the electric valve on the outlet pipe is automatically delayed to open, and the residual liquid in the cleaning membrane shell flows into the cleaning medicine box from the water outlet at the lower end of the shell, thereby reducing the risk of residual liquid overflow when disassembling the reverse osmosis membrane element, which is safe, environmentally friendly, economical and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 A schematic diagram of the structure of a reverse osmosis membrane element cleaning device provided in an embodiment of the present application;

[0025] Figure 2 for Figure 1 Left view of

[0026] Figure 3 for Figure 1 Right view of;

[0027] Figure 4 This is a schematic diagram of the installation of the cleaning medicine box and the coil in the embodiment of the present application;

[0028] Figure 5 A flow chart of a reverse osmosis membrane element cleaning device provided in an embodiment of the present application.

[0029] Description of reference numerals:

[0030] 10-working table; 11-membrane housing fixing frame; 12-universal wheel;

[0031] 20-cleaning medicine box; 21-agitator; 22-driving motor; 23-drain valve;

[0032] 30-cleaning membrane shell; 31-shell; 311-water inlet; 312-water outlet; 32-first end cover; 320-water outlet; 33-second end cover; 34-water inlet pipe; 35-water outlet pipe; 351-electric valve; 36-water production pipe; 37-block;

[0033] 41-electric heating element; 421-coil; 422-refrigerator;

[0034] 51-cleaning pump; 52-safety filter; 53-power distribution control box; 54-temperature sensor; 55-pH sensor; 56-pressure gauge. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution in the embodiment of the present application will be described in more detail below in conjunction with the drawings in the embodiment of the present application. It is worth noting that the embodiments described in the drawings are only part of the embodiments of the present application, not all of the embodiments. That is, the embodiments described by the drawings are exemplary and are intended to be used to explain the present application, and cannot be understood as limiting the present application.

[0036] The following will be combined Figure 1 to Figure 5 The reverse osmosis membrane element cleaning equipment provided in the embodiment of the present application is described.

[0037] The present application embodiment provides a reverse osmosis membrane element cleaning device, such as Figures 1 to 4 As shown, it includes a workbench 10, a cleaning medicine box 20, a cleaning pump 51, a safety filter 52, a cleaning membrane shell assembly, a temperature control assembly and a power distribution control box 53. A temperature sensor 54 and a pH sensor 55 are provided in the cleaning medicine box 20. The temperature control assembly includes a heating assembly and a refrigeration assembly.

[0038] The cleaning membrane shell assembly includes at least one cleaning membrane shell 30 for correspondingly installing the reverse osmosis membrane element. The cleaning membrane shell 30 includes a shell 31 extending in the horizontal direction. A first end cap 32 is provided at one end of the shell 31. A water outlet 320 is provided on the first end cap 32. The other end of the shell 31 is detachably sealed and connected to a second end cap 33. The second end cap 33 is located inside the shell 31 and has a set distance from the end surface of the corresponding end shell 31. A water inlet 311 is provided at one end of the shell 31 close to the first end cap 32, and a water outlet 312 is provided at one end of the shell 31 close to the second end cap 33. The water inlet 311 and the water outlet 312 are located on the same axis of the shell 31 and are both provided on the lower surface of the shell 31.

[0039] The cleaning medicine box 20, the cleaning pump 51 and the safety filter 52 are connected in sequence through pipes. The outlet of the safety filter 52 is connected to the water inlet 311 through the water inlet pipe 34, and the water outlet 312 is connected to the cleaning medicine box 20 through the water outlet pipe 35. The water outlet pipe 35 is provided with an electric valve 351, and the water outlet 320 is connected to the cleaning medicine box 20 through the water production pipe 36.

[0040] The heating assembly includes an electric heating element 41, which is arranged in the water inlet pipe 34 and is used to heat the liquid medicine in the water inlet pipe 34. The cooling assembly includes a coil 421 and a refrigerator 422, and the refrigerator 422 is arranged on the workbench 10. The coil 421 is wound around the outer wall of the cleaning medicine box 20, and the coil 421 and the refrigerator 422 are connected by a pipe.

[0041] A controller electrically connected to the temperature sensor 54 and the pH sensor 55 is disposed in the power distribution control box 53, and the control ends of the cleaning pump 51, the electric valve 351, and the temperature control component are all disposed in the power distribution control box 53 and electrically connected to the controller.

[0042] The first end cover 32 and the second end cover 33 are usually connected to the housing 31 by fixing parts. To facilitate processing and installation and ensure structural stability, the first end cover 32 and the second end cover 33 are symmetrically arranged at both ends of the housing 31, and there is a set distance between the first end cover 32 and the end surface of the corresponding end housing 31.

[0043] The power distribution control box 53 presets two programs: cleaning mode and membrane removal mode: install the reverse osmosis membrane element to be cleaned into the cleaning membrane shell 30 and debug the equipment, select the cleaning mode, and the cleaning process is as follows: Figure 5 As shown, the cleaning pump 51 pumps the liquid medicine in the cleaning medicine box 20 into the security filter 52, and the filtered liquid medicine enters the cleaning membrane shell 30 from the water inlet 311 through the water inlet pipe 34, and the cleaned liquid medicine flows back to the cleaning medicine box 20 from the water outlet 312 of the cleaning membrane shell 30 through the water outlet pipe 35, and the reverse osmosis membrane element is cleaned in this way. During the cleaning process, the temperature sensor 54 and the pH sensor 55 monitor the liquid medicine in real time, and the power distribution control box 53 starts the heating component or the refrigeration component according to the monitoring data to keep the liquid medicine temperature within a suitable range; after the cleaning is completed, the power distribution control box 5 Close the electric valves 351 at various locations, dismantle the connection between the second end cover 33 and the shell 31, set the distance between the second end cover 33 and the end surface of the corresponding end shell 31, keep the second end cover 33 still in the shell 31, then start and select the film removal mode, start the cleaning pump 51 through the power distribution control box 53, under the action of the set water pressure, the second end cover 33 is pushed and moved in the shell 31 and does not fall out of the shell 31, then close the cleaning pump 51, the electric valve 351 on the outlet pipe 35 automatically delays opening, and the residual liquid in the cleaning membrane shell 30 flows from the bottom of the shell 31 into the cleaning medicine box 20.

[0044] In summary, the embodiment of the present application provides a reverse osmosis membrane element cleaning equipment that realizes real-time operation control, the cleaning temperature can be maintained within a safe and appropriate range, the purpose of continuous cleaning is achieved, the cleaning time is shortened, the offline cleaning efficiency is improved, and the residual liquid in the cleaning membrane shell is recovered by gravity to the cleaning medicine box, which solves the risk of liquid overflow and is safe, environmentally friendly, economical and efficient.

[0045] In one possible implementation, Figure 3 As shown, the second end cover 33 is sealed and connected to the housing 31 through a plurality of stoppers 37 , and the plurality of stoppers 37 are evenly distributed in the circumferential direction in the housing 31 .

[0046] Positioning grooves are respectively provided on the inner wall of the housing 31 corresponding to each stopper 37 , and the outer edge of each stopper 37 is embedded in the positioning groove. The inner edge of the stopper 37 extending out of the positioning groove is bolted to the second end cover 33 .

[0047] In this arrangement, the outer periphery of the second end cover 33 is sealedly connected to the inner wall of the shell 31, one end of the stopper 37 is plugged into the shell 31, and the other end of the stopper 37 is bolted to the second end cover 33, which is convenient for disassembly and positioning, and further improves operability.

[0048] In one possible implementation, Figure 3 As shown, there are three stoppers 37 , and the stoppers 37 are arc-shaped or crescent-shaped.

[0049] Among them, the width of the crescent shape is narrow at both ends and large in the middle, and the corresponding middle depth of the positioning groove is greater than the depth at both ends. This arrangement can make the installation stable and further improve the operability.

[0050] In an achievable embodiment, the electric heating element 41 includes a heating coil, which is wound and fixed on the outside of the pipe section of the water inlet pipe near the water inlet, and the outside of the heating coil is covered with a coil protection shell. The control end of the heating coil is arranged in the power distribution control box and is electrically connected to the controller.

[0051] The heating coil is an electromagnetic heating element, which has a fast heating speed, high heating efficiency, easy control and low maintenance cost. The controller controls the heating coil to start and adjust the heating coil according to the real-time temperature value when the temperature of the liquid is too low, so that the cleaning liquid reaches a suitable cleaning temperature. This setting further improves the accuracy of temperature control and ensures the stability of continuous cleaning.

[0052] In one possible implementation, Figure 1 As shown, a stirrer 21 is provided in the cleaning medicine box 20 , a stirring blade of the stirrer 21 is arranged near the bottom of the cleaning medicine box 20 , and a driving motor 22 of the stirrer 21 is arranged at the top of the cleaning medicine box 20 .

[0053] This arrangement makes the liquid medicine more easily soluble under suitable temperature conditions, further shortening the cleaning time and improving the cleaning efficiency.

[0054] In a feasible implementation, the safety filter 52, the water outlet pipe 35 and the water production pipe 36 are respectively provided with a pressure gauge 56 electrically connected to the controller.

[0055] The water production pipeline 36 and the water inlet pipeline 34 are respectively provided with electric valves 351 electrically connected to the controller in the power distribution control box 53 .

[0056] This arrangement can realize real-time pressure monitoring of the three-way pipelines entering and exiting the cleaning membrane shell. The controller adjusts the cleaning pump 51 and each electric valve 351 according to the real-time pressure value, thereby improving the cleaning stability and safety.

[0057] In a feasible implementation, the workbench 10 is a frame structure, and a drain valve 23 is provided at the bottom of the cleaning medicine box 20 .

[0058] With this arrangement, the liquid medicine is completely drained from the bottom of the cleaning medicine box 20, and the operation is simple.

[0059] In one possible implementation, the refrigerant in the refrigeration assembly includes liquid nitrogen.

[0060] With this arrangement, when the temperature of the liquid medicine is too high, the refrigeration component is started, and the good refrigeration effect of liquid nitrogen can quickly cool the liquid medicine, further improving the temperature control effect of the equipment and achieving efficient and continuous cleaning.

[0061] In one possible implementation, Figures 1 to 3 As shown, the workbench 10 includes a membrane shell fixing frame 11, and the cleaning membrane shell 30 is fixed on the membrane shell fixing frame 11 and is arranged higher than the cleaning medicine box 20.

[0062] This arrangement can make the disassembly and assembly of the reverse osmosis membrane element simple and labor-saving, reduce the labor intensity of the staff, and also facilitate the self-flow recovery of the residual liquid in the cleaning membrane shell 30.

[0063] In one possible implementation, Figures 1 to 3 As shown, universal wheels 12 are provided at the bottom of the workbench 10 .

[0064] This arrangement allows the equipment to be moved as a whole, making it convenient to carry out targeted cleaning of the reverse osmosis system one by one. The operation is simple, the cleaning cost is reduced, and the cleaning effect is further improved.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A reverse osmosis membrane element cleaning device, characterized in that: It includes a workbench, a cleaning medicine box, a cleaning pump, a safety filter, a cleaning membrane shell assembly, a temperature control assembly and a power distribution control box. The cleaning medicine box is provided with a temperature sensor and a pH sensor. The temperature control assembly includes a heating assembly and a refrigeration assembly. The cleaning membrane shell assembly comprises at least one cleaning membrane shell for correspondingly installing a reverse osmosis membrane element, the cleaning membrane shell comprises a shell extending in a horizontal direction, a first end cover is arranged at one end of the shell, a water outlet is provided on the first end cover, the other end of the shell is detachably sealed and connected to a second end cover, the second end cover is located inside the shell and has a set distance from the end surface of the shell at the corresponding end; a water inlet is arranged at one end of the shell close to the first end cover, a water outlet is arranged at one end of the shell close to the second end cover, the water inlet and the water outlet are located on the same axis of the shell, and are both provided on the lower surface of the shell; The cleaning medicine box, the cleaning pump and the safety filter are connected in sequence through pipelines, the outlet of the safety filter is connected to the water inlet through a water inlet pipeline; the water outlet is connected to the cleaning medicine box through a water outlet pipeline, an electric valve is provided on the water outlet pipeline, and the water outlet is connected to the cleaning medicine box through a water outlet pipeline; The heating assembly includes an electric heating element, which is arranged on the water inlet pipe and is used to heat the liquid medicine in the water inlet pipe; the refrigeration assembly includes a coil and a refrigerator, which is arranged on the workbench, the coil is wound around the outer wall of the cleaning medicine box, and the coil is connected to the refrigerator through a pipe; A controller electrically connected to the temperature sensor and the pH sensor is arranged in the power distribution control box, and control ends of the cleaning pump, the electric valve and the temperature control component are all arranged in the power distribution control box and electrically connected to the controller.

2. The reverse osmosis membrane element cleaning equipment according to claim 1, characterized in that: The second end cover is sealed and connected to the housing through a plurality of stoppers, and the plurality of stoppers are evenly distributed in the circumferential direction in the housing; The inner wall of the shell is respectively provided with positioning grooves corresponding to the stoppers, and the outer edge of each stopper is embedded in the positioning groove. The inner edge of the stopper extending out of the positioning groove is connected with the second end cover bolt.

3. The reverse osmosis membrane element cleaning equipment according to claim 2, characterized in that: The number of the blocks is 3, and the blocks are arc-shaped or crescent-shaped.

4. The reverse osmosis membrane element cleaning equipment according to claim 1, characterized in that: The electric heating element includes a heating coil, which is wound and fixed on the outside of the pipe section of the water inlet pipe close to the water inlet, and a coil protection shell is provided on the outside of the heating coil; the control end of the heating coil is arranged in the power distribution control box and is electrically connected to the controller.

5. The reverse osmosis membrane element cleaning equipment according to claim 1, characterized in that: A stirrer is arranged in the cleaning medicine box, the stirring blades of the stirrer are arranged close to the bottom of the cleaning medicine box, and the driving motor of the stirrer is arranged on the top of the cleaning medicine box.

6. The reverse osmosis membrane element cleaning device according to any one of claims 1 to 5, characterized in that: The safety filter, the water outlet pipe and the water production pipe are respectively provided with pressure gauges electrically connected to the controller.

7. The reverse osmosis membrane element cleaning equipment according to claim 6, characterized in that: The workbench is a frame structure, and a sewage discharge valve is provided at the bottom of the cleaning medicine box.

8. The reverse osmosis membrane element cleaning equipment according to claim 6, characterized in that: The refrigerant in the refrigeration assembly includes liquid nitrogen.

9. The reverse osmosis membrane element cleaning equipment according to claim 6, characterized in that: The workbench comprises a membrane shell fixing frame, and the cleaning membrane shell is fixed on the membrane shell fixing frame and is arranged higher than the cleaning medicine box.

10. The reverse osmosis membrane element cleaning equipment according to claim 9, characterized in that: The bottom of the workbench is provided with universal wheels.

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