Ultrafiltration automatic cleaning system

Abstract

The utility model discloses an ultrafiltration automatic cleaning system which comprises a detection unit, a pure water tank, an ultrafiltration pipe and a liquid medicine tank, the pure water tank, the ultrafiltration pipe and the liquid medicine tank are connected through a pipeline, the detection unit is arranged on the pipeline between the ultrafiltration pipe and the pure water tank, a first water pump used for pumping pure water is arranged on the outer side of the pure water tank, and a second water pump used for pumping pure water is arranged on the outer side of the detection unit. A second water pump used for pumping liquid medicine is arranged on the outer side of the liquid medicine box. The first water pump is started, pure water in the pure water tank is pumped into the ultrafiltration pipe through the pipeline to clean the ultrafiltration pipe, then the corresponding valve is closed again, the second water pump is started, the cleaning agent in the liquid medicine tank is pumped for backwashing, after the specified cleaning time is reached, the pure water is pumped to clean the residual agent in the pipeline, and the normal ultrafiltration state is recovered. And the backwashing maintenance work of the manual switching valve is automatically executed by the main controller, so that the condition that the ultrafiltration membrane is not cleaned in time and the quality is unstable is avoided.

Description

Technical Field

[0001] The utility model specifically relates to an ultrafiltration automatic cleaning system. Background Art

[0002] Ultrafiltration is a process for removing water and dissolved salts from flowing liquids at lower pump pressures. The key is a thin, semi-permeable polymer membrane that selectively blocks dissolved macromolecules or colloidal particles (see isolation) while allowing water, salts, solvents and other small molecules to pass through (see osmosis). Ultrafiltration is a continuous process that operates at low pressure and separates the feed solution into two fluids, the isolation fluid and the permeate.

[0003] At present, the ultrafiltration liquid flow rate in conventional ultrafiltration systems is discovered by personnel during spot inspection. When the ultrafiltration liquid flow rate is found to be lower than the specified value, the staff manually switches the valve to perform backwash maintenance on the system, resulting in untimely ultrafiltration membrane cleaning and unstable cleaning quality. Utility Model Content

[0004] The purpose of the utility model is to provide an ultrafiltration automatic cleaning system 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: an ultrafiltration automatic cleaning system, comprising a detection unit, a pure water tank, an ultrafiltration tube and a medical water tank, wherein the pure water tank, the ultrafiltration tube and the medical water tank are connected by a pipeline, the detection unit is arranged on the pipeline between the ultrafiltration tube and the pure water tank, a first water pump for extracting pure water is arranged on the outside of the pure water tank, and a second water pump for extracting medical water is arranged on the outside of the medical water tank.

[0006] Preferably, the detection unit comprises a flow sensor arranged on the pipeline between the ultrafiltration tube and the pure water tank, and the flow sensor signal is connected to the main controller.

[0007] Preferably, an electrophoresis tank liquid is connected in parallel between the ultrafiltration tube and the medicine tank through a pipeline, and the flow of the electrophoresis tank liquid is controlled by a first solenoid valve.

[0008] Preferably, a second solenoid valve is provided between the second water pump and the ultrafiltration tube, and a third solenoid valve is provided between the first water pump and the ultrafiltration tube.

[0009] Preferably, the ultrafiltration tube is also connected to an ultrafiltration water tank through a pipeline, the ultrafiltration water tank is arranged in parallel with the pure water tank, and the outlet ends of the pure water tank and the ultrafiltration water tank are respectively provided with a fourth solenoid valve and a fifth solenoid valve.

[0010] Preferably, the water outlet end of the ultrafiltration tube is connected to the recycling pool and the medicine tank through a pipeline.

[0011] Preferably, a sixth solenoid valve is provided on the pipeline of the ultrafiltration tube toward the medicine water tank, and a seventh solenoid valve is provided on the pipeline of the ultrafiltration tube toward the rechargeable swimming pool.

[0012] Preferably, a filter is provided on one side of the inlet end of the ultrafiltration tube.

[0013] The technical effects and advantages of the utility model are as follows: when the flow sensor of the automatic ultrafiltration cleaning system detects that the flow rate of the ultrafiltrate is lower than the specified value, the signal is fed back to the main controller, and the main controller cuts off the seventh solenoid valve, closes the corresponding valve, starts the first water pump, draws pure water in the pure water tank through the pipeline into the ultrafiltration tube, cleans the ultrafiltration tube, and then closes the corresponding valve again, starts the second water pump, draws the cleaning agent from the medicine tank for backwashing, and after the specified cleaning time is reached, pure water is drawn to clean the residual agent in the pipeline to restore the normal ultrafiltration state, and the backwash maintenance work of the manual switching valve is handed over to the main controller for automatic execution, so as to avoid the situation where the ultrafiltration membrane is not cleaned in time and the quality is unstable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a flow chart of automatic cleaning of ultrafiltration tube.

[0015] In the figure: 1. pure water tank; 2. ultrafiltration tube; 3. medicine water tank; 4. first water pump; 5. second water pump; 6. flow sensor; 7. main controller; 8. electrophoresis tank liquid; 9. first solenoid valve; 10. second solenoid valve; 11. third solenoid valve; 12. ultrafiltration water tank; 13. fourth solenoid valve; 14. fifth solenoid valve; 15. sixth solenoid valve; 16. seventh solenoid valve. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0017] To automatically switch the valves, refer to Figure 1As shown, it includes a detection unit, a pure water tank, an ultrafiltration tube and a medical water tank, the pure water tank, the ultrafiltration tube and the medical water tank are connected by a pipeline, the detection unit is arranged on the pipeline between the ultrafiltration tube and the pure water tank, a first water pump for extracting pure water is arranged on the outside of the pure water tank, and a second water pump for extracting medical water is arranged on the outside of the medical water tank. When the flow sensor detects that the flow rate of ultrafiltrate is lower than the specified value, the signal is fed back to the main controller, the main controller cuts off the seventh solenoid valve, closes the corresponding valve, starts the first water pump, extracts the pure water in the pure water tank through the pipeline into the ultrafiltration tube, cleans the ultrafiltration tube, then closes the corresponding valve again, starts the second water pump, extracts the cleaning agent from the medical water tank for backwashing, and extracts pure water to clean the residual agent in the pipeline after the specified cleaning time is reached, restores the normal ultrafiltration state, and gives the backwash maintenance work of the manual switching valve to the main controller for automatic execution.

[0018] In order to extract the cleaning agent from the chemical tank for backwashing, refer to Figure 1 As shown, the detection unit includes a flow sensor arranged on the pipeline between the ultrafiltration tube and the pure water tank, and the signal of the flow sensor is connected to the main controller. The ultrafiltrate flow in the pipeline is detected in real time by the flow sensor and fed back to the main controller. The main controller adopts a programmable logic controller. The ultrafiltration tube and the medicine tank are connected in parallel through the pipeline with electrophoresis tank liquid, and the electrophoresis tank liquid controls the flow through the first electromagnetic valve. The electrophoresis tank liquid is added to reduce metal surface corrosion, prevent oxidation, accelerate coating pigment deposition and maintain a stable pH value. A second electromagnetic valve is arranged between the second water pump and the ultrafiltration tube, and a third electromagnetic valve is arranged between the first water pump and the ultrafiltration tube. When the pure water in the pure water tank is drawn into the ultrafiltration tube, the medicine in the medicine tank cannot flow into the ultrafiltration tube through the second electromagnetic valve. When the medicine in the medicine tank is drawn into the ultrafiltration tube, the pure water in the pure water tank cannot enter the ultrafiltration tube through the third electromagnetic valve. The ultrafiltration tube is also connected to an ultrafiltration water tank through a pipeline. The ultrafiltration water tank is arranged in parallel with the pure water tank. The outlet ends of the pure water tank and the ultrafiltration water tank are respectively provided with a fourth solenoid valve and a fifth solenoid valve, and the outflow of pure water in the ultrafiltration water tank and the pure water tank is controlled by the fourth solenoid valve and the fifth solenoid valve. The water outlet end of the ultrafiltration tube is connected to the recharge pool and the medicine water tank through a pipeline. The sixth solenoid valve is arranged on the pipeline of the ultrafiltration tube toward the medicine water tank, and the seventh solenoid valve is arranged on the pipeline of the ultrafiltration tube toward the recharge pool. A filter is arranged on one side of the inlet end of the ultrafiltration tube, and the filter can filter the medicine and pure water entering the ultrafiltration tube. The main controller can control the first solenoid valve, the second solenoid valve, the third solenoid valve, the fourth solenoid valve, the fifth solenoid valve, the sixth solenoid valve and the seventh solenoid valve at the same time.

[0019] When in use, first when the flow sensor detects that the ultrafiltrate flow rate is lower than the specified value, the signal is fed back to the main controller, the main controller cuts off the seventh solenoid valve, closes the corresponding valve, starts the first water pump, draws pure water in the pure water tank through the pipeline into the ultrafiltration tube, cleans the ultrafiltration tube, then closes the corresponding valve again, starts the second water pump, draws the cleaning agent from the chemical tank for backwashing, and after the specified cleaning time is reached, draws pure water to clean the residual agent in the pipeline to restore the normal ultrafiltration state.

[0020] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention.

Claims

1. An automatic ultrafiltration cleaning system, characterized in that: It includes a detection unit, a pure water tank, an ultrafiltration tube and a medical water tank, wherein the pure water tank, the ultrafiltration tube and the medical water tank are connected by a pipeline, the detection unit is arranged on the pipeline between the ultrafiltration tube and the pure water tank, a first water pump for extracting pure water is arranged on the outside of the pure water tank, and a second water pump for extracting medical water is arranged on the outside of the medical water tank.

2. The automatic ultrafiltration cleaning system according to claim 1, characterized in that: The detection unit comprises a flow sensor arranged on the pipeline between the ultrafiltration tube and the pure water tank, and the flow sensor signal is connected to the main controller.

3. The automatic ultrafiltration cleaning system according to claim 1, characterized in that: An electrophoresis tank liquid is connected in parallel between the ultrafiltration tube and the medicine tank through a pipeline, and the flow of the electrophoresis tank liquid is controlled by a first electromagnetic valve.

4. The automatic ultrafiltration cleaning system according to claim 1, characterized in that: A second solenoid valve is provided between the second water pump and the ultrafiltration tube, and a third solenoid valve is provided between the first water pump and the ultrafiltration tube.

5. The automatic ultrafiltration cleaning system according to claim 1, characterized in that: The ultrafiltration tube is also connected to an ultrafiltration water tank through a pipeline. The ultrafiltration water tank is arranged in parallel with the pure water tank. The outlet ends of the pure water tank and the ultrafiltration water tank are respectively provided with a fourth solenoid valve and a fifth solenoid valve.

6. The automatic ultrafiltration cleaning system according to claim 1, characterized in that: The water outlet end of the ultrafiltration tube is connected to the recycling swimming pool and the medicine water tank through a pipeline.

7. An automatic ultrafiltration cleaning system according to claim 6, characterized in that: A sixth solenoid valve is arranged on the pipeline of the ultrafiltration tube toward the medicine water tank, and a seventh solenoid valve is arranged on the pipeline of the ultrafiltration tube toward the rechargeable swimming pool.

8. The automatic ultrafiltration cleaning system according to claim 1, characterized in that: A filter is arranged on one side of the inlet end of the ultrafiltration tube.

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