CN217855519U - Flushing system of reverse osmosis membrane filter element - Google Patents

Abstract

A flushing system for a reverse osmosis membrane filter element, the pre-filter element is connected to the reverse osmosis membrane filter element through a pipeline, a booster pump is arranged at the water inlet end of the reverse osmosis membrane filter element, the pure water outlet end of the reverse osmosis membrane filter element is connected to the pure water outlet, and the The reverse osmosis membrane filter element and the pure water outlet are connected to the water tank through the first three-way valve, and the bottom of the water tank is connected to the pipeline between the pre-filter element and the booster pump through the backflow flushing pipeline. The water pump and the second one-way valve are connected to the waste water pipeline from the concentrated water end of the reverse osmosis membrane filter element. In the reverse osmosis flushing system involved in the utility model, a water tank and a pure water return pipeline are arranged at the rear end of the reverse osmosis membrane filter element to form a whole backflow flushing system, and the pure water accumulated in the water tank is passed through the backflow flushing pipeline and the pump after the shutdown. Extract the water in the water tank, flush the reverse osmosis membrane, and discharge it through the waste water pipe to complete the thorough cleaning and flushing, reduce the concentration of the water at the concentrated water end of the reverse osmosis membrane, and solve the problem that the concentration of the first cup of water is too high.

Description

A flushing system for a reverse osmosis membrane filter element

【Technical field】

The utility model relates to water purification equipment, in particular to equipment with a reverse osmosis membrane and a system for flushing the reverse osmosis membrane.

【Background technique】

The reverse osmosis membrane is the core water purification component of the reverse osmosis water purification system. It uses the pressure difference as the driving force to separate the solvent from the solution. Therefore, concentrated water is obtained from the high-pressure side of the reverse osmosis membrane of the system, and pure water is obtained from the low-pressure side. However, when the reverse osmosis water purification system is on standby, there is no pressure difference on both sides of the reverse osmosis membrane, and the concentrated water will penetrate into the pure water over time, increasing the ion concentration of the pure water. At present, most reverse osmosis water purifiers in the market, the longer the standby time, the higher the concentration of the first cup of pure water; and the greater the flow of purified water, the more obvious the problem; some reverse osmosis water purification equipment will introduce raw water to the reverse osmosis membrane filter concentration Rinse at the water end, so the cleaning is not thorough enough for the concentrated water concentration; if you consider introducing water from the pure water end for cleaning, the first problem is that the concentration of the existing pure water has increased, and the second is that the water volume is not enough to prevent Thoroughly clean the reverse osmosis membrane, and the flushing effect is not good enough.

【Content of invention】

The utility model proposes a flushing system for the reverse osmosis membrane filter element in view of the above situation, which can solve the problem that the concentrated water affects the pure water after standby, and solve the problem that the concentration of the first cup of water exceeds the standard. Pure water, after closing the water outlet, use pure water backflow to effectively flush the reverse osmosis membrane, reduce the TDS value of the first glass of water, and achieve the best water purification effect.

The flushing system of the reverse osmosis membrane filter element involved in the utility model includes a pre-filter element, a reverse osmosis membrane filter element, a booster pump, and a pure water outlet, wherein the pre-filter element is connected to the reverse osmosis membrane filter element through a pipeline, and the reverse osmosis membrane filter element A booster pump is set at the water inlet, and the pure water outlet of the reverse osmosis membrane filter element is connected to the pure water outlet. The room is connected to the water tank through the first three-way valve, and connected to the pipeline between the pre-filter element and the booster pump from the bottom of the water tank through the backflow flushing pipeline. A suction pump and a second one-way valve are arranged in turn in the direction of the reverse osmosis membrane filter element, and the wastewater outlet is connected to the wastewater pipeline from the concentrated water outlet end of the reverse osmosis membrane filter element.

A first solenoid valve is arranged before the raw water inlet port and the pre-filter element.

A second electromagnetic valve is arranged between the water inlet end of the water tank and the first three-way valve, and a float switch is arranged in the water tank.

A first one-way valve and a high-pressure switch are arranged between the first three-way valve and the pure water outlet, and the first one-way valve and the high-pressure switch are arranged in sequence along the water flow direction, and finally connected to the pure water outlet.

The return flushing pipeline is connected between the pre-filter element and the booster pump through the second three-way valve.

The waste water pipeline includes a waste water valve and a waste water outlet, and the waste water pipeline is connected to the concentrated water outlet end of the reverse osmosis membrane filter element.

In the reverse osmosis flushing system involved in the utility model, a water tank and a pure water return pipeline are arranged at the rear end of the reverse osmosis membrane filter element to form a whole backflow flushing system, and the pure water accumulated in the water tank is passed through the backflow flushing pipeline and the pump after the shutdown. Extract the water in the water tank and send it to the booster pump, flush the reverse osmosis membrane through the booster pump, and discharge it through the waste water pipe to complete the thorough cleaning and flushing, reduce the concentration of the concentrated water end of the reverse osmosis membrane, and solve the problem The problem with the first glass of water being too concentrated.

【Description of drawings】

Fig. 1 is a schematic structural view of a flushing system of a reverse osmosis membrane filter element involved in the present invention;

Among them: 10. Pre-filter element; 11. Raw water inlet port; 12. First solenoid valve; 20. Booster pump; 30. Reverse osmosis membrane filter element; 40. Water tank; 41. First three-way valve; 42. Second Solenoid valve; 43. Float switch; 50. Pure water outlet; 51. First one-way valve; 52. High pressure switch; 60. Waste water pipeline; 61. Waste water valve; 62. Waste water outlet; 71. A water pump; 72. A second one-way valve; 80. A second three-way valve.

【Detailed ways】

The utility model will be described in detail below with reference to the accompanying drawings and embodiments. The examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model, but should not be construed as limiting the present utility model.

In describing the present invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal" , "top", "bottom", "inner", "outer" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or It should not be construed as limiting the invention by implying that a referenced device or element must have a particular orientation, be constructed, and operate in a particular orientation.

Please refer to accompanying drawing 1, wherein shows a kind of flushing system of reverse osmosis membrane filter element, comprises pre-filter element 10, booster pump 20, reverse osmosis membrane filter element 30, water tank 40, pure water outlet 50, wherein pre-filter element 10 Connect to the reverse osmosis membrane filter element 30 by pipeline, booster pump 20 is set at the water inlet end of the reverse osmosis membrane filter element 30, the pure water outlet end of the reverse osmosis membrane filter element 30 is connected to the pure water outlet 50, and the reverse osmosis membrane filter element 30 and the pure water The outlets 50 are connected to the water tank 40 through the first three-way valve 41; the system also includes a waste water pipeline 60 and a backflow flushing pipeline 70, which are connected to the pre-filter element 10 and the booster pump 20 through the backflow flushing pipeline 70 from the bottom of the water tank 40 The backflow flushing pipeline 70 includes a water pump 71 and a second one-way valve 72, and the water pump 71 and the second one-way valve 72 are arranged in sequence along the direction of the backflow water flow. The second one-way valve 72 prevents the raw water from flowing back to flush the pipeline 70, and the water pump 71 pumps the pure water from the water tank to the booster pump to perform the flushing process. The waste water pipeline 60 is connected to the concentrated water outlet of the reverse osmosis membrane filter element 30 .

A first solenoid valve 12 is provided before the raw water inlet port 11 and the pre-filter element 10 . Responsible for providing raw water to the water purification system at the raw water inlet, and controlling the disconnection of raw water and the water purification system.

Between the front filter element 10 and the reverse osmosis membrane filter element 30 , that is, a booster pump is provided at the water inlet end of the reverse osmosis membrane filter element 30 to provide the working pressure of the reverse osmosis membrane.

A second electromagnetic valve 42 is provided between the water inlet end of the water tank 40 and the first three-way valve 41 . A float switch 43 is provided in the water tank, and the float switch detects the high water level and the low water level of the water tank 40 . The water tank and the reflux flushing pipeline 70 constitute a reflux flushing system as a whole, and the second electromagnetic valve 42 controls the disconnection of the pure water and the flushing system.

A first one-way valve 51 and a high-pressure switch 52 are arranged between the first three-way valve 41 and the pure water outlet 50, and the first one-way valve 51 and the high-pressure switch 52 are arranged in sequence along the water flow direction, and finally connected to the pure water outlet 50. The first one-way valve 51 prevents the water purification system from starting due to pressure release of the pure water pipeline, and the high pressure switch 52 detects the pressure of the pure water pipeline.

The return flushing pipeline 70 is connected between the pre-filter element 10 and the booster pump 20 through the second three-way valve 80 .

The waste water pipeline 60 includes a waste water valve 61 and a waste water outlet 62 , and the waste water pipeline 60 is connected to the concentrated water outlet end of the reverse osmosis membrane filter element 30 . The waste water valve 61 controls the full opening or half opening of the waste water pipeline.

During the working process of the flushing system of the reverse osmosis membrane filter element: when the tap of the pure water outlet 50 is opened, the high pressure switch 52 signals a low pressure, and the water purification system starts to work to produce water.

When the program enters the flushing process, the float switch 43 detects whether the water tank 40 has a high liquid level. If the liquid level is not high, open the second electromagnetic valve to replenish water in the water tank 40; if the liquid level is high, turn on the water pump 71, and send the pure water in the water tank 40 to the pre-filter 10 and the booster pump 20 through the return flushing pipeline 70 The nodes in between flush the concentrated water side of the reverse osmosis membrane through the booster pump 20; the waste water pipeline 60 is fully opened, and the flushing water is discharged through the waste water end of the reverse osmosis membrane filter element 30 until the float switch 43 detects a low liquid level. Now close the second solenoid valve 42, the water pump 71, the booster pump 20 and the waste water valve 61. Stop the rinse phase.

When the program is in the process of carrying out the flushing process, the high pressure switch 52 gives a low pressure signal, the second solenoid valve 42 and the water pump 71 stop working, the flushing process is terminated, and the water purification system starts to produce water.

In the reverse osmosis flushing system involved in the utility model, a water tank and a pure water return pipeline are arranged at the rear end of the reverse osmosis membrane filter element to form a whole backflow flushing system, and the pure water accumulated in the water tank is passed through the backflow flushing pipeline and the pump after the shutdown. Extract the water in the water tank and send it to the booster pump, flush the reverse osmosis membrane through the booster pump, and discharge it through the waste water pipe to complete the thorough cleaning and flushing, reduce the concentration of the concentrated water end of the reverse osmosis membrane, and solve the problem The problem with the first glass of water being too concentrated.

The above description is only the preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model is disclosed as above with the preferred embodiment, it is not used to limit the utility model. Anyone who is familiar with the utility model Professional technicians, without departing from the scope of the technical solution of the present utility model, should use the technical content disclosed above to make some changes or modify equivalent embodiments with equivalent changes, but if they do not depart from the technical solution of the present utility model, the The utility model technology refers to any simple modification, equivalent change and modification made to the above embodiments, which all belong to the scope of the utility model technical solution.

Claims (6)

1. A flushing system of a reverse osmosis membrane filter element, comprising a pre-filter element, a reverse osmosis membrane filter element, a booster pump, a water tank, and a pure water outlet, wherein the pre-filter element is connected to the reverse osmosis membrane filter element by a pipeline, and the reverse osmosis membrane filter element A booster pump is set at the water inlet, and the pure water outlet of the reverse osmosis membrane filter element is connected to the pure water outlet. The room is connected to the water tank through the first three-way valve, and connected to the pipeline between the pre-filter element and the booster pump from the bottom of the water tank through the backflow flushing pipeline. A suction pump and a second one-way valve are arranged in turn in the direction of the reverse osmosis membrane filter element to connect the waste water pipeline from the concentrated water end of the reverse osmosis membrane filter element. 2. The flushing system of the reverse osmosis membrane filter element according to claim 1, characterized in that a first electromagnetic valve is provided before the raw water inlet port and the pre-filter element. 3. The flushing system of the reverse osmosis membrane filter element according to claim 1, wherein a second solenoid valve is provided between the water inlet end of the water tank and the first three-way valve, and a float switch is provided in the water tank. 4. according to the flushing system of the described reverse osmosis membrane filter element of claim 3, it is characterized in that, be provided with the first one-way valve and high pressure switch between the first three-way valve and the pure water outlet, arrange the first one-way valve successively along the water flow direction A one-way valve and a high-pressure switch are finally connected to the pure water outlet. 5. The flushing system of the reverse osmosis membrane filter element according to claim 1, characterized in that, the backflow flushing pipeline is connected between the pre-filter element and the booster pump through a second three-way valve. 6. The flushing system of the reverse osmosis membrane filter element according to claim 1, wherein the waste water pipeline comprises a waste water valve and a waste water outlet, and the waste water pipeline is connected to the concentrated water outlet end of the reverse osmosis membrane filter element.

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