Reverse osmosis chemical cleaning automatic water replenishing and chemical adding adjusting device

Abstract

The utility model relates to the technical field of adjusting devices, and provides a reverse osmosis chemical cleaning automatic water replenishing and chemical adding adjusting device which comprises a raw water tank, reverse osmosis equipment, a pH meter, a water producing tank, a water using point, a concentrated water tank, a discharging tank, a chemical cleaning water tank, a liquid level meter and a stirring frame. A reverse osmosis membrane is installed in the reverse osmosis equipment, the pH meter is installed on the raw water outlet pipe and used for measuring the pH value of cleaning liquid in a pipeline in the circulating chemical cleaning process, a raw water lifting pump is arranged on the side, close to the raw water tank, of the raw water outlet pipe, and a reverse osmosis high-pressure pump is installed on the side, close to the reverse osmosis equipment, of the raw water outlet pipe. The produced water tank is communicated with one side of the reverse osmosis equipment through a produced water inlet pipe; a chemical cleaning water pump is mounted at an outlet of the chemical cleaning water tank. By means of the technical scheme, the problem that in the prior art, automatic water supplementing and chemical adding adjustment cannot be conveniently carried out in the chemical cleaning process of the reverse osmosis membrane is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of adjusting devices, and particularly relates to an automatic water replenishing and chemical dosing adjusting device for reverse osmosis chemical cleaning. Background Technique

[0002] The reverse osmosis membrane is a composite artificial semi-permeable membrane made by simulating biological semi-permeable membranes. The currently used membrane materials are mainly cellulose acetate and aromatic polyamides. The reverse osmosis membrane can retain substances larger than 0.0001 μm and is the most refined membrane separation product. It can effectively retain all dissolved salts and organic substances with a molecular weight greater than 100, while allowing water molecules to pass through. During the use of the reverse osmosis membrane, suspended solids, colloids, dissolved COD, and microorganisms inevitably present in the influent water will cause membrane fouling. During the filtration process, it is necessary to perform timed backwashing and air washing operations on the reverse osmosis membrane to ensure the working efficiency of the reverse osmosis membrane, that is, the retention ability of the material. When the pollutants accumulate to a certain extent and the membrane flux cannot be restored only by simple backwashing, chemical cleaning should be carried out in time to restore the normal use function of the membrane element. Generally, when the water production of the membrane drops to 10-20% of the original water production; the pressure difference between the influent and the concentrated water increases by 15%; the water production quality drops by 10-15%, etc., it indicates that the membrane element is in a severely fouled state and timely chemical cleaning is required to prevent further pollution from causing irreversible damage to the membrane performance.

[0003] For different pollutants, different cleaning agents should be selected. Common pollutants include oil, microorganisms, and inorganic pollution, etc. The occurrence of membrane fouling often involves more than one pollutant. Therefore, chemical cleaning usually includes two major steps: acid cleaning and alkaline cleaning. The acid cleaning solution (pH is 2.5) is mainly used to remove inorganic scale (such as calcium carbonate, etc.), metal oxides, and inorganic colloids. The temperature of the cleaning solution generally does not exceed 45°C; the alkaline cleaning solution (pH is 11.5) is used to remove polymeric silicon scale, organic substances, biological substances, and colloids. The temperature of the cleaning solution generally does not exceed 35°C. Generally, alkaline cleaning is carried out first and then acid cleaning. The main component of the alkaline cleaning solution is sodium hydroxide, and the main components of the acid cleaning solution are hydrochloric acid or nitric acid. However, the chemical agents added during the chemical cleaning process are highly corrosive and toxic and are not suitable for direct human contact. During the chemical dosing operation, protective equipment should be worn. Before chemical cleaning, the required cleaning agents should be added to the chemical cleaning water tank and mixed evenly with the solution under the action of a stirrer. During the chemical cleaning process, since the cleaning solution continuously contacts the pollutants and chemical reactions occur, the number of effective cleaning molecules is reduced, resulting in fluctuations in the pH value of the cleaning solution and affecting the cleaning effect. At the same time, excessive dosing of the cleaning agent will also cause problems such as insufficient utilization of drugs and waste of resources. Content of the Utility Model

[0004] The utility model provides an automatic water replenishment and chemical dosing adjustment device for reverse osmosis chemical cleaning, which solves the problem in the related technology that it is not convenient to automatically adjust water replenishment and chemical dosing during the chemical cleaning of the reverse osmosis membrane.

[0005] The technical solution of the utility model is as follows: an automatic water replenishment and chemical dosing adjustment device for reverse osmosis chemical cleaning, including a raw water tank, a reverse osmosis device, a pH meter, a product water tank, a water usage point, a concentrated water tank, an external discharge tank, a chemical cleaning tank, a liquid level meter and a stirring frame;

[0006] A raw water outlet pipe is connected between the reverse osmosis device and the raw water tank, and a reverse osmosis membrane is installed in the reverse osmosis device;

[0007] The pH meter is installed on the raw water outlet pipe;

[0008] The product water tank is connected to one side of the reverse osmosis device through a product water inlet pipe;

[0009] A water supply pipe is connected between the water usage point and the product water tank;

[0010] The concentrated water tank is arranged on one side of the reverse osmosis device;

[0011] The external discharge tank is installed on one side of the concentrated water tank, and a connection component is connected between the external discharge tank, the concentrated water tank and the reverse osmosis device;

[0012] A concentrated water return pipe is connected between the chemical cleaning tank and the connection component, and a cleaning water replenishment pipe and a product water return pipe are respectively connected between the chemical cleaning tank and the water supply pipe and the product water inlet pipe;

[0013] The liquid level meter is installed in the chemical cleaning tank;

[0014] The stirring frame is rotatably installed in the chemical cleaning tank through a stirring component.

[0015] Further, the stirring component includes:

[0016] A protective plate, which is detachably connected to the top of the chemical cleaning tank;

[0017] A mounting frame, which is fixedly connected to the top of the protective plate;

[0018] An electric cylinder, which is installed on the top of the mounting frame, and the output end of the electric cylinder penetrates through the mounting frame;

[0019] A mounting cylinder, which is fixedly connected to the output end of the electric cylinder;

[0020] A motor, which is installed in the mounting cylinder;

[0021] The stirring rod is fixedly connected to the output end of the motor and the stirring frame, and the stirring rod is rotatably connected through the protective plate.

[0022] Furthermore, the connection assembly includes:

[0023] A connecting pipe, which is connected to one side of the reverse osmosis device;

[0024] A driven pipe, which is connected between the connecting pipe, the concentrated water tank and the external discharge tank, and a concentrated water inlet valve and a waste water external discharge valve are installed on the driven pipe.

[0025] Furthermore, one side of the chemical cleaning water tank is fixedly connected with a mounting plate, two medicine storage tanks are symmetrically connected to the mounting plate, and medicine adding pipes are connected between the two medicine storage tanks and the chemical cleaning water tank, and medicine adding valves are arranged on the two medicine adding pipes.

[0026] Furthermore, a raw water lift pump and a raw water inlet and outlet valve are arranged on one side of the raw water outlet pipe close to the raw water tank, a reverse osmosis high-pressure pump and a reverse osmosis high-pressure pump inlet and outlet valve are installed on one side of the raw water outlet pipe close to the reverse osmosis device, and a security filter is arranged in front of the reverse osmosis high-pressure pump.

[0027] Furthermore, a cleaning outlet pipe is connected between the chemical cleaning water tank and the raw water outlet pipe, and a chemical cleaning water pump and a cleaning inlet and outlet valve are installed on the cleaning outlet pipe.

[0028] Furthermore, a concentrated water return valve is arranged on the concentrated water return pipe, a make-up water inlet valve is arranged on the cleaning make-up water pipe, and a product water return valve is arranged on the product water return pipe.

[0029] Furthermore, a product water inlet valve is arranged on the product water inlet pipe, and a product water lift pump is installed on the water supply pipe for use.

[0030] Furthermore, two sliding plates are symmetrically connected to the mounting cylinder, and sliding grooves for the sliding plates to slide are formed on the mounting frame.

[0031] Furthermore, a plurality of fixing frames are fixedly connected to the protective plate, and fixing screws are threadedly connected between the plurality of fixing frames and the outer side wall of the chemical cleaning water tank.

[0032] The working principle and beneficial effects of the present utility model are as follows:

[0033] 1. In the present utility model, the raw water lift pump facilitates providing power for the raw water to enter the reverse osmosis equipment. The security filter facilitates further removing particulate matter in the solution before entering the reverse osmosis. The reverse osmosis high-pressure pump facilitates further boosting the pressure of the reverse osmosis inlet water to ensure the reverse osmosis inlet water pressure. The product water tank facilitates collecting the product water. At the same time, the concentrated water tank can be used to collect the concentrated water;

[0034] 2. In the present utility model, through the reverse osmosis equipment, desalination and reuse of water can be achieved, so as to facilitate chemical cleaning of the reverse osmosis equipment in a timely manner when the reverse osmosis membrane is severely polluted to restore its treatment capacity;

[0035] 3. In the present utility model, through the pH meter, it is convenient to measure the pH value of the cleaning solution in the pipeline during the circulating chemical cleaning process, so that when the value of the pH meter deviates from the set value, chemicals (acid / alkali) are added to the chemical cleaning water tank;

[0036] 4. In the present utility model, through the liquid level gauge, it is convenient to replenish water to the chemical cleaning water tank. When the water volume reaches the set liquid level, the water replenishment stops. At the same time, through the stirring frame, the aqueous solution added with the chemical cleaning agent in the chemical cleaning water tank can be stirred to facilitate uniform mixing of the solution;

[0037] 5. Therefore, compared with the prior art, the reverse osmosis chemical cleaning automatic water replenishment and chemical dosing adjustment device is not convenient for automatic water replenishment and chemical dosing adjustment during the chemical cleaning process of the reverse osmosis membrane. It is convenient to perform automatic water replenishment and chemical dosing adjustment during the chemical cleaning process of the reverse osmosis membrane through the cooperation of the raw water tank, reverse osmosis equipment, pH meter, product water tank, water usage point, concentrated water tank, external discharge tank, chemical cleaning water tank, liquid level gauge, stirring frame, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The following further elaborates the present utility model in detail in conjunction with the drawings and specific embodiments.

[0039] Figure 1 is the overall structural schematic diagram of the present utility model;

[0040] Figure 2 is for the present utility model Figure 1 the enlarged structural schematic diagram at A in;

[0041] Figure 3 is the structural schematic diagram of the cooperation of the liquid level gauge, medicine storage tank and fixing frame of the present utility model;

[0042] Figure 4 is the sectional structural schematic diagram of the cooperation of the chemical cleaning water tank, protective plate and stirring frame of the present utility model.

[0043] In the figure: 1. Original water tank; 2. Reverse osmosis equipment; 3. Raw water outlet pipe; 4. pH meter; 5. Product water tank; 6. Product water inlet pipe; 7. Water usage point; 8. Water supply pipe for water usage; 9. Concentrate water tank; 10. External discharge tank; 11. Chemical cleaning water tank; 12. Concentrate water return pipe; 13. Cleaning makeup water pipe; 14. Product water return pipe; 15. Liquid level gauge; 16. Stirring frame; 17. Protection plate; 18. Mounting frame; 19. Electric cylinder; 20. Mounting cylinder; 21. Motor; 22. Stirring rod; 23. Driven pipe; 24. Chemical storage tank; 25. Cleaning outlet pipe; 26. Sliding plate; 27. Fixed frame; 28. Fixed screw. Detailed implementation manners

[0044] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts fall within the scope of protection of the present utility model.

[0045] Such as Figures 1 to 4As shown in the figure, this embodiment proposes an automatic makeup water and chemical dosing adjustment device for reverse osmosis chemical cleaning, which includes a raw water tank 1, a reverse osmosis device 2, a pH meter 4, a product water tank 5, a water usage point 7, a concentrated water tank 9, an external discharge tank 10, a chemical cleaning tank 11, a liquid level gauge 15, and a stirring frame 16. A raw water outlet pipe 3 is connected between the reverse osmosis device 2 and the raw water tank 1. A reverse osmosis membrane is installed in the reverse osmosis device 2. During the process of replenishing water to the chemical cleaning tank 11, the reverse osmosis device 2 can still work normally through the reverse osmosis membrane to filter and produce water. The pH meter 4 is installed on the raw water outlet pipe 3 and is used to measure the pH value of the cleaning liquid in the pipeline during the circulating chemical cleaning process. A raw water lift pump and a raw water outlet valve are arranged on the side of the raw water outlet pipe 3 close to the raw water tank 1 to provide power for the raw water to enter the reverse osmosis device 2. And a reverse osmosis high-pressure pump is installed on the side of the raw water outlet pipe 3 close to the reverse osmosis device 2. A security filter is arranged in front of the reverse osmosis high-pressure pump. The security filter serves as the last line of defense for the raw water to enter the reverse osmosis device. The reverse osmosis high-pressure pump further pressurizes the raw water to ensure the reverse osmosis inlet pressure. The product water tank 5 is connected to one side of the reverse osmosis device 2 through a product water inlet pipe 6. A product water inlet valve is arranged on the product water inlet pipe 6 to facilitate the control of the product water inlet pipe 6. And a product water lift pump is installed on the water supply pipe 8 for collecting product water. A water supply pipe 8 is connected between the water usage point 7 and the product water tank 5. The concentrated water tank 9 is arranged on one side of the reverse osmosis device 2 for collecting concentrated water. The external discharge tank 10 is installed on one side of the concentrated water tank 9. And a connection component is connected between the external discharge tank 10, the concentrated water tank 9, and the reverse osmosis device 2. A concentrated water return pipe 12 is connected between the chemical cleaning tank 11 and the connection component. And a cleaning makeup water pipe 13 and a product water return pipe 14 are respectively connected between the chemical cleaning tank 11 and the water supply pipe 8 and the product water inlet pipe 6. A cleaning outlet pipe 25 is connected between the chemical cleaning tank 11 and the raw water outlet pipe 3. And a chemical cleaning water pump and a cleaning inlet and outlet valve are installed on the cleaning outlet pipe 25 to control the cleaning outlet pipe 25. The liquid level gauge 15 is installed in the chemical cleaning tank 11 to regulate the product water lift pump to replenish water to the chemical cleaning tank 11. When the water volume reaches the set liquid level, the water replenishment stops. The stirring frame 16 is rotationally installed in the chemical cleaning tank 11 through a stirring component. A concentrated water return valve is arranged on the concentrated water return pipe 12. And a makeup water inlet valve is arranged on the cleaning makeup water pipe 13. A product water return valve is arranged on the product water return pipe 14. At the same time, the makeup water inlet valve and the product water return valve facilitate the control of the cleaning makeup water pipe 13 and the product water return pipe 14;

[0046] The raw water tank 1 is used to store the water after pretreatment or ultrafiltration treatment. The water in the raw water tank 1 is lifted to the security filter by the raw water lift pump. The water outlet of the security filter is further pressurized by the reverse osmosis high-pressure pump and enters the reverse osmosis device 2. The product water treated by the reverse osmosis device 2 enters the product water tank 5, and at the same time, the concentrated water enters the concentrated water tank 9;

[0047] The water in this scheme is treated by the reverse osmosis equipment 2 to achieve water desalination and reuse. When the reverse osmosis membrane is severely contaminated, the system can be chemically cleaned in time to restore the system's processing capacity. This scheme uses simple electric valve settings and instrument linkage control to control the addition of cleaning agents in real time, so that the cleaning liquid can maintain a certain pH value during the circulating chemical cleaning process, improve the chemical cleaning efficiency and agent utilization rate, and achieve efficient chemical cleaning of reverse osmosis membrane elements, saving the cost of excessive agent addition and labor costs.

[0048] refer to Figure 3 as well as Figure 4 The stirring assembly includes a protective plate 17, a mounting frame 18, an electric cylinder 19, a mounting barrel 20, a motor 21 and a stirring rod 22. The protective plate 17 is detachably connected to the top of the chemical cleaning water tank 11, the mounting frame 18 is fixedly connected to the top of the protective plate 17, the electric cylinder 19 is installed on the top of the mounting frame 18, and the output end of the electric cylinder 19 is connected to the mounting frame 18 through the mounting barrel 20. The mounting barrel 20 is fixedly connected to the output end of the electric cylinder 19. Two sliding plates 26 are symmetrically connected to the mounting barrel 20. The mounting frame 18 is provided with a sliding plate 26 for sliding. The movable sliding groove is convenient for the stable sliding of the installation cylinder 20, the motor 21 is installed in the installation cylinder 20, the stirring rod 22 is fixedly connected to the output end of the motor 21 and the stirring frame 16, and the stirring rod 22 is connected to the protective plate 17 through rotation, and a plurality of fixing frames 27 are fixedly connected to the protective plate 17, and the plurality of fixing frames 27 are all threadedly connected to the outer wall of the chemical cleaning water tank 11 with fixing screws 28, so that the protective plate 17 can be installed and removed on the chemical cleaning water tank 11, so as to facilitate the installation and removal of the electric cylinder 19 and the motor 21;

[0049] When the solution in the chemical cleaning water tank 11 needs to be stirred, the electric cylinder 19 is started, so that the electric cylinder 19 repeatedly lifts and lowers the mounting cylinder 20, so that the motor 21 drives the stirring frame 16 to repeatedly lift and lower through the stirring rod 22. At the same time, the motor 21 is started, so that the motor 21 drives the stirring frame 16 to rotate through the stirring rod 22, so that the solution in the chemical cleaning water tank 11 can be uniformly stirred in all directions.

[0050] refer to Figure 1 as well as Figure 2 The connecting assembly includes a connecting pipe and a driven pipe 23. The connecting pipe is connected to one side of the reverse osmosis device 2. The driven pipe 23 is connected between the connecting pipe and the concentrated water tank 9 and the external discharge box 10. A concentrated water inlet valve and a waste water external discharge valve are installed on the driven pipe 23 to facilitate the control of concentrated water discharge and waste water discharge. A chemical cleaning waste water discharge port is provided on the external discharge box 10 to discharge the waste water into the ditch.

[0051] When the chemical cleaning is completed, the cleaning wastewater discharge valve is opened to discharge the cleaning waste liquid into the external discharge box 10, and the wastewater can be discharged into the ditch through the chemical cleaning wastewater discharge outlet.

[0052] refer to Figure 3 A mounting plate is fixedly connected to one side of the chemical cleaning water tank 11, and two drug storage tanks 24 are symmetrically connected to the mounting plate. Both drug storage tanks 24 are connected to the chemical cleaning water tank 11 through a drug adding pipe, and both drug adding pipes are provided with a drug adding valve. The drugs in the two drug storage tanks 24 can be an acidic drug and an alkaline drug respectively;

[0053] When the pH meter 4 detects that the pH value in the raw water outlet pipe 3 deviates from the set value, an instruction is sent to the dosing valve to allow the liquid in one of the storage tanks 24 to enter the chemical cleaning water tank 11 through the dosing pipe, so as to add the agent (acid or alkali) to the chemical cleaning water tank 11. At the same time, the stirring frame continues to stir during the dosing process. When the pH meter 4 value reaches the set value and tends to a stable state, the opening of the dosing valve is reduced (or stopped), thereby controlling the addition of the cleaning agent in real time, so that the cleaning liquid can maintain a certain pH value during the cyclic chemical cleaning process, thereby improving the chemical cleaning efficiency and the utilization rate of the agent.

[0054] In this embodiment, in the normal operating mode of the reverse osmosis system, it is necessary to open the raw water lifting pump, the raw water inlet and outlet valves, the security filter, the reverse osmosis high-pressure pump, the reverse osmosis high-pressure pump inlet and outlet valves, the water inlet valve of the production water tank 5, the concentrated water inlet valve, the production water lifting pump and the water supply valve to make the system operate normally. When the reverse osmosis equipment 2 needs chemical cleaning, the water replenishment inlet valve of the chemical cleaning water tank 11 is opened in advance to replenish water to the chemical cleaning water tank 11. When the liquid level meter 15 detects that the liquid level reaches the set value, a signal is sent to the system to reduce or close the water replenishment inlet electric valve of the chemical cleaning water tank 11. During this process, the reverse osmosis membrane can continue to filter and produce without stopping the filtration system.

[0055] Then, according to the system situation, the calculated amount of medicine that meets the initial cleaning solution concentration (pH value) is added to the chemical cleaning water tank 11 through one of the two medicine storage tanks 24. During the dosing process, the electric cylinder 19 is started to drive the motor 21 to move repeatedly, and the motor 21 drives the stirring rod 22 to rotate, so that the stirring frame can stir the solution in the chemical cleaning water tank 11 to mix the medicine evenly. Then, chemical cleaning is started. In the chemical cleaning mode, the cleaning inlet and outlet valves, the reverse osmosis high-pressure pump inlet and outlet valves, the produced water reflux valve, the concentrated water reflux valve, the chemical cleaning water pump, the safety filter, and the reverse osmosis high-pressure pump are opened to put the chemical cleaning water tank 11 and the reverse osmosis equipment in a closed loop state.

[0056] When the chemical cleaning is completed, open the external discharge valve for the cleaning wastewater, and discharge the cleaning waste liquid into the external discharge tank 10. After the cleaning waste liquid is emptied, open the cleaning water replenishment valve to flush the chemical cleaning pipeline. After the pH meter 4 detects that the pH value in the pipeline is qualified, end the flushing, close all valves, switch the reverse osmosis device 2 back to the normal operation mode of the reverse osmosis system, and start a new round of filtration work.

[0057] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. An automatic water replenishment and chemical dosing adjustment device for reverse osmosis chemical cleaning, characterized in that, Comprising: Raw water tank (1); Reverse osmosis equipment (2), a raw water outlet pipe (3) is connected between the reverse osmosis equipment (2) and the raw water tank (1); pH meter (4), the pH meter (4) is installed on the raw water outlet pipe (3); Product water tank (5), the product water tank (5) is connected to one side of the reverse osmosis equipment (2) through a product water inlet pipe (6); Water use point (7), a water supply pipe (8) is connected between the water use point (7) and the product water tank (5); Concentrate water tank (9), the concentrate water tank (9) is arranged on one side of the reverse osmosis equipment (2); External discharge tank (10), the external discharge tank (10) is installed on one side of the concentrate water tank (9), and a connection component is connected between the external discharge tank (10), the concentrate water tank (9) and the reverse osmosis equipment (2); Chemical cleaning water tank (11), a concentrate water return pipe (12) is connected between the chemical cleaning water tank (11) and the connection component, and a cleaning makeup water pipe (13) and a product water return pipe (14) are respectively connected between the chemical cleaning water tank (11), the water supply pipe (8) and the product water inlet pipe (6); Liquid level gauge (15), the liquid level gauge (15) is installed in the chemical cleaning water tank (11); Stirring frame (16), the stirring frame (16) is rotatably installed in the chemical cleaning water tank (11) through a stirring component.

2. The automatic makeup water and chemical dosing adjustment device for reverse osmosis chemical cleaning according to claim 1, characterized in that, The stirring component includes: Protective plate (17), the protective plate (17) is detachably connected to the top of the chemical cleaning water tank (11); Mounting frame (18), the mounting frame (18) is fixedly connected to the top of the protective plate (17); Electric cylinder (19), the electric cylinder (19) is installed on the top of the mounting frame (18), and the output end of the electric cylinder (19) penetrates through and is connected to the mounting frame (18); Mounting cylinder (20), the mounting cylinder (20) is fixedly connected to the output end of the electric cylinder (19); Motor (21), the motor (21) is installed in the mounting cylinder (20); Stirring rod (22), the stirring rod (22) is fixedly connected to the output end of the motor (21) and the stirring frame (16), and the stirring rod (22) penetrates through and is rotatably connected to the protective plate (17).

3. An automatic water replenishment and chemical dosing adjustment device for reverse osmosis chemical cleaning according to claim 2, characterized in that, The connection component includes: Connection pipe, the connection pipe is connected to one side of the reverse osmosis equipment (2); Driven pipe (23), the driven pipe (23) is connected between the connection pipe, the concentrate water tank (9) and the external discharge tank (10), and a concentrate water inlet valve and a waste water external discharge valve are installed on the driven pipe (23).

4. An automatic water replenishment and chemical dosing adjustment device for reverse osmosis chemical cleaning according to claim 3, characterized in that, One side of the chemical cleaning water tank is fixedly connected with a mounting plate, two medicine storage tanks (24) are symmetrically connected to the mounting plate, and medicine adding pipes are connected between the two medicine storage tanks (24) and the chemical cleaning water tank, and medicine adding valves are arranged on the two medicine adding pipes.

5. An automatic water replenishment and chemical dosing adjustment device for reverse osmosis chemical cleaning according to claim 4, characterized in that, A raw water outlet pipe (3) is provided with a raw water lift pump and a raw water inlet and outlet valve on one side close to the raw water tank (1), and a reverse osmosis high-pressure pump and a reverse osmosis high-pressure pump inlet and outlet valve are installed on one side of the raw water outlet pipe (3) close to the reverse osmosis device (2). A security filter is provided in front of the reverse osmosis high-pressure pump.

6. An automatic makeup water and chemical dosing adjustment device for reverse osmosis chemical cleaning according to claim 5, characterized in that, A cleaning outlet pipe (25) is communicated between the chemical cleaning water tank (11) and the raw water outlet pipe (3), and a chemical cleaning water pump and a cleaning inlet and outlet valve are installed on the cleaning outlet pipe (25).

7. An automatic makeup water and chemical dosing adjustment device for reverse osmosis chemical cleaning according to claim 6, characterized in that, A concentrated water return valve is provided on the concentrated water return pipe (12), a makeup water inlet valve is provided on the cleaning makeup water pipe (13), and a product water return valve is provided on the product water return pipe (14).

8. An automatic makeup water and chemical dosing adjustment device for reverse osmosis chemical cleaning according to claim 7, characterized in that, A product water inlet valve is provided on the product water inlet pipe (6), and a product water lift pump is installed on the water supply pipe for use (8).

9. An automatic water replenishment and chemical dosing adjustment device for reverse osmosis chemical cleaning according to claim 8, characterized in that, Two sliding plates (26) are symmetrically connected to the mounting cylinder (20), and a sliding groove for the sliding plate (26) to slide is formed on the mounting frame (18).

10. An automatic water replenishment and chemical dosing adjustment device for reverse osmosis chemical cleaning according to claim 9, characterized in that, A plurality of fixing frames (27) are fixedly connected to the protective plate (17), and fixing screws (28) are threadedly connected between the plurality of fixing frames (27) and the outer side wall of the chemical cleaning water tank.

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