CN105600965A - A reverse osmosis water purifier system and its control method - Google Patents

Abstract

The invention discloses a reverse osmosis water purifier system, which comprises a multi-stage filter element, a booster pump, a pressure barrel, a four-way valve, a low-pressure switch and a reverse osmosis membrane filter element, wherein a water outlet pipe of tap water is sequentially connected with the four-way valve, the low-pressure switch, the multi-stage filter element, the booster pump and the reverse osmosis membrane filter element; when the cleaning water is used, the water purifier starts to prepare the purified water and stores the purified water in the pressure barrel, so that the waste of water resources is avoided; meanwhile, tap water can be mixed with concentrated water, the use is more reasonable, a user can use water for the second time according to needs, the utilization rate of the tap water is improved, and the novel tap water mixing device is more humanized.

Description

A reverse osmosis water purifier system and its control method

technical field

The invention relates to a water purification device, in particular to a reverse osmosis water purifier system and a control method thereof.

Background technique

The water purifier is a kind of water purification equipment that uses multi-stage filter elements for water purification treatment. The treatment mostly uses physical methods such as filtration, adsorption, and reverse osmosis without adding chemical substances. According to the water purification accuracy of the water purifier, it can be divided into two types: drinking water purifiers, also called household water purifiers, and laboratory water purifiers that can meet the laboratory's pure water quality requirements. Usually, household water purifiers purify tap water into clean water, which can be directly drunk, while discharging waste water, which is then directly discharged to the sewer, or the waste water is stored in a container as clean water. If it is directly discharged to the sewer, it will cause waste of water resources, and the waste water is stored in the container. When the container is full, it will overflow the container, causing inconvenience. And the biggest hidden danger of the existing water purifier is that once water leakage occurs, if it cannot be found in time, it will cause leakage, soak indoor items, and cause economic losses.

Based on the technical problems of the above-mentioned water purifier system, there is no relevant solution; therefore, it is urgent to find an effective solution to solve the above-mentioned problems.

Contents of the invention

The purpose of the present invention is to provide a reverse osmosis water purifier system to solve the problems of wasting water resources and increasing the water consumption rate in the prior art.

In order to solve the above technical problems, the present invention provides a reverse osmosis water purifier system, which includes a multi-stage filter element, a booster pump, a pressure tank, a four-way valve, a low pressure switch and a reverse osmosis membrane filter element, and the tap water outlet pipes are sequentially connected to four Directional valve, low-pressure switch, multi-stage filter element, booster pump and reverse osmosis membrane filter element, the clean water outlet pipe of the reverse osmosis membrane filter element is connected to the pressure tank and the water outlet device with a post-installed activated carbon filter element respectively, of which the reverse osmosis membrane element The concentrated water flow path is connected to the water outlet device through a four-way valve, and one end of the four-way valve is connected with tap water.

Further, a one-way valve is arranged on the clean water outlet pipe of the reverse osmosis membrane filter element.

Further, a high pressure switch is arranged on the clean water outlet pipe of the reverse osmosis membrane filter element, and the high pressure switch is arranged behind the check valve; a check valve is arranged on the concentrated water outlet pipe of the reverse osmosis membrane filter element.

Further, a flow valve is provided on the concentrated water outlet pipe of the reverse osmosis membrane filter element.

Further, the multi-stage filter element includes a first-stage PP cotton filter element, a second-stage granular activated carbon filter element and a third-stage ultrafiltration membrane filter element.

The present invention also provides a control method for the reverse osmosis water purifier system, wherein, when the high-pressure switch detects that the pressure of the purified water is greater than a preset value, the one-way valve on the concentrated water outlet pipeline is controlled to open.

Further, when the one-way valve on the concentrated water outlet pipeline is opened, it also includes controlling the opening of the four-way valve.

The beneficial effects of the present invention are:

The invention can make rational use of concentrated water. When clean water is used, the water purifier starts to prepare clean water and store it in the pressure tank to avoid waste of water resources. When the clean water outlet device is closed, the pipeline for tap water inlet is cut off, and the The water purification system stops working, so as to avoid wasting water resources; at the same time, tap water can be mixed with concentrated water, which is more reasonable to use. Users can use secondary water according to needs, improving the utilization rate of tap water and making it more humane.

Description of drawings

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is a structural schematic diagram of the present invention.

In the figure: 1. Tap water; 2. Multi-stage filter element; 3. Booster pump; 4. Reverse osmosis membrane filter element; 5. Pressure tank; 6. Rear activated carbon filter element; 7. One-way valve; 8. One-way valve; 9. Water outlet device; 10. High pressure switch; 11. Flow valve; 12. Four-way valve; 13. Low pressure switch.

detailed description

As shown in Figure 1, a reverse osmosis water purifier system includes a multi-stage filter element 2, a booster pump 3, a pressure tank 5, a four-way valve 12, a low pressure switch 13, a reverse osmosis membrane filter element 4, and an inlet pipe for tap water 1 The four-way valve 12, low pressure switch 13, multi-stage filter element 2, booster pump 3 and reverse osmosis membrane filter element 4 are sequentially connected, and the water purification outlet pipes of the reverse osmosis membrane filter element 4 are respectively connected to the pressure tank 5 and the filter element with post activated carbon. The water purification outlet device 9 of the filter element 6, the reverse osmosis membrane filter element 9 is connected to the clean water outlet device 9 through a four-way valve 13; The four-way valve 12 is connected to the water outlet device for cleaning water, and one end of the four-way valve is connected with the tap water 1, so that the tap water can be mixed and matched while the concentrated water is being discharged, so as to avoid sanitary problems in direct use of the concentrated water.

The concentrated water outlet pipe of the reverse osmosis membrane filter element 4 is provided with a one-way valve 9 to prevent waste water from flowing back.

Preferably, a flow valve 11 is provided on the concentrated water outlet pipe of the reverse osmosis membrane filter element 4 to facilitate adjustment and control of the water outlet.

Preferably, the clean water outlet pipe of the reverse osmosis membrane filter element 4 is provided with a one-way valve 10 to prevent waste water from flowing back.

Preferably, a high pressure switch 11 is provided on the clean water outlet pipe of the reverse osmosis membrane filter element 4 .

Preferably, the multi-stage filter element 2 includes a first-stage PP cotton filter element, a second-stage granular activated carbon filter element and a third-stage ultrafiltration membrane filter element.

The working principle is as follows: turn on the water outlet device 9 of the cleaning water 8, and the system starts to work. The tap water 1 passes through the multi-stage filter element 2, and after being pressurized by the booster pump 3, it enters the reverse osmosis membrane filter element 4, and the concentrated water passes through the one-way valve 7 After the flow valve 11 and the four-way valve 12, the water flows out from the water outlet device 9. At this time, the purified water prepared by the reverse osmosis membrane filter element 4 is stored in the pressure tank 5. When the water in the pressure barrel 5 is full, the high-pressure switch 10 triggers, and the low-pressure switch 13 cuts off the water intake of the multi-stage filter element 2 to prevent water leakage. If the water outlet device 9 for cleaning water is still opened, the tap water 1 can pass through the Valve 13 flows directly from outlet 9 of cleaning water 8 .

In the open state of the water outlet device 9 for clean water, the water outlet device 9 of the clean water 7 can be opened at any time to receive the clean water; When the pressure barrel 5 has no water, it is necessary to open the water outlet device 9 for cleaning water.

According to the water purifier system provided above, this application also provides a corresponding control method:

When the high-pressure switch 10 detects that the pressure of the purified water is greater than the preset value, the one-way valve 7 on the concentrated water outlet pipeline is controlled to open, so that the concentrated water flow path can be started to work during the high-speed water production process of the water purifier to avoid the pressure of the purified water. Too large will cause damage to the reverse osmosis membrane filter element, that is, to prevent the pressure of the osmosis membrane filter element from being too large.

Preferably, when the one-way valve 7 on the concentrated water outlet pipeline is opened, it also includes controlling the opening of the four-way valve 12, which can reduce the pressure of the concentrated water flow path, and at the same time, the tap water can be mixed with the concentrated water, which is more reasonable to use , users can use secondary water according to needs, improve the utilization rate of tap water, and be more humane.

The above descriptions are only preferred embodiments of the present invention, and do not limit the present invention in any form. Any person familiar with the art, without departing from the scope of the technical solution of the present invention, can use the above-mentioned technical content to make many possible changes and modifications to the technical solution of the present invention, or modify it into an equivalent embodiment with equivalent changes . Therefore, any changes, modifications, equivalent changes and modifications made to the above embodiments according to the technology of the present invention, which do not deviate from the technical solution of the present invention, all belong to the protection scope of the technical solution.

Claims (7)

1. A reverse osmosis water purifier system, including a multi-stage filter element (2), a booster pump (3), a pressure barrel (5), a four-way valve (12), a low pressure switch (13) and a reverse osmosis membrane filter element ( 4), the outlet pipe of tap water (1) is sequentially connected to the four-way valve (12), the low pressure switch (13), the multi-stage filter element (2), the booster pump (3) and the The reverse osmosis membrane filter element (4), the clean water outlet pipe of the reverse osmosis membrane filter element (4) is respectively connected to the pressure barrel (5) and the water outlet device (9) with a rear activated carbon filter element (6), which It is characterized in that: the concentrated water flow path of the reverse osmosis membrane filter element (4) is connected to the water outlet device (9) through the four-way valve (12), and one end of the four-way valve (12) communicates with the tap water (1) . 2. A reverse osmosis water purifier system according to claim 1, characterized in that: a check valve (8) is provided on the water purification outlet pipe of the reverse osmosis membrane filter element (4). 3. A reverse osmosis water purifier system according to claim 2, characterized in that: the water purification outlet pipe of the reverse osmosis membrane filter element (4) is provided with a high-pressure switch (10), and the high-pressure switch ( 10) Set behind the one-way valve (8); a one-way valve (7) is set on the concentrated water outlet pipe of the reverse osmosis membrane filter element (4). 4. The reverse osmosis water purifier system according to claim 3, characterized in that: a flow valve (11) is provided on the concentrated water outlet pipe of the reverse osmosis membrane filter element (4). 5. A kind of reverse osmosis water purifier system according to claim 1, is characterized in that: described multi-stage filter element (2) comprises first-stage PP cotton filter element, second-stage granular activated carbon filter element and third-stage ultrafiltration membrane filter. 6. A control method for the reverse osmosis water purifier system according to claim 3, characterized in that, when the high pressure switch (10) detects that the pressure of the purified water is greater than a preset value, the concentrated water outlet is controlled to The one-way valve (7) on the water line is opened. 7. The control method of a reverse osmosis water purifier system according to claim 6, characterized in that, when the one-way valve (7) on the concentrated water outlet pipeline is opened, it also includes controlling the four Open to valve (12).