Long-acting reverse osmosis water purification system

Abstract

The utility model discloses a reverse osmosis water purification system which comprises a reverse osmosis filter element and a pure water tank, the pure water tank is arranged above the reverse osmosis filter element, a water inlet pipeline is arranged between a water inlet of the reverse osmosis filter element and a tap water pipe, and a booster water pump is arranged in the water inlet pipeline. A part of the pipeline between the booster water pump and the reverse osmosis filter element is higher than the top end of the reverse osmosis filter element, a pure water storage pipeline is arranged between a pure water outlet of the reverse osmosis filter element and the pure water tank, a wastewater pipe is arranged at a wastewater outlet of the reverse osmosis filter element, the wastewater pipe is provided with an upward bent pipeline, and the upward bent pipeline is connected with the reverse osmosis filter element. The reverse osmosis water purification system is further provided with a backflow pipeline, one end of the backflow pipeline is connected with a waste water outlet of the reverse osmosis filter element, and the other end of the backflow pipeline is connected with a water inlet of the reverse osmosis filter element. According to the reverse osmosis water purification system disclosed by the utility model, the service life of the reverse osmosis filter element is long.

Description

Technical Field

[0001] The utility model relates to a long-acting reverse osmosis water purification system, belonging to the technical field of water purification equipment. Background Art

[0002] The existing reverse osmosis water purification system has a generally low pure waste ratio and a short lifespan of the RO filter element. This is mainly due to the unreasonable initialization process before the use of the reverse osmosis filter element and the insufficient protection of the reverse osmosis filter element during the water production process.

[0003] Therefore, it is necessary to conduct in-depth research on the existing reverse osmosis water purification system to solve the above problems. Utility Model Content

[0004] In order to overcome the above problems, the inventors have conducted in-depth research and proposed a reverse osmosis water purification system, including a reverse osmosis filter element and a pure water tank.

[0005] The pure water tank is arranged above the reverse osmosis filter element.

[0006] The pure water tank has a water tank outlet pipe, on which a water outlet flow meter and a water outlet pump are arranged.

[0007] A water inlet pipeline is arranged between the water inlet of the reverse osmosis filter element and the tap water pipe, a booster water pump is arranged in the water inlet pipeline, a portion of the pipeline between the booster water pump and the reverse osmosis filter element is higher than the top of the reverse osmosis filter element, and a water inlet flow meter is arranged on the water inlet pipeline;

[0008] A pure water storage pipeline is arranged between the pure water outlet of the reverse osmosis filter element and the pure water tank, and a pure water flow meter and a pure water solenoid valve are arranged on the pure water storage pipeline.

[0009] The wastewater outlet of the reverse osmosis filter element is provided with a wastewater pipe, the wastewater pipe is connected to the wastewater outlet and is used to discharge wastewater from the reverse osmosis water purification system, the wastewater pipe has an upwardly curved pipeline, so that part of the wastewater pipe is higher than the top of the reverse osmosis filter element, the top of the wastewater pipe is provided with an air inlet, and a wastewater regulating valve is provided on the wastewater pipe;

[0010] The reverse osmosis water purification system also has a reflux pipeline, one end of which is connected to the wastewater outlet of the reverse osmosis filter element, and the other end is connected to the water inlet of the reverse osmosis filter element. A reflux valve and a reflux regulating valve are arranged in the reflux pipeline.

[0011] A three-way pipeline is arranged between the reflux valve and the reflux regulating valve, the other end of the three-way pipeline is connected to the wastewater outlet, and a wastewater valve is arranged on the three-way pipeline;

[0012] A three-way pipeline is arranged between the water outlet flow meter and the water outlet pump, the other end of the three-way pipeline is connected to the waste water outlet of the pure water tank, and a first flushing valve is arranged in the three-way pipeline;.

[0013] A three-way pipeline is arranged between the pure water flow meter and the pure water solenoid valve, the other end of the three-way pipeline is connected to the waste water pipe, and a second flushing valve is arranged on the three-way pipeline.

[0014] In a preferred embodiment, a pressure switch is provided on the water outlet pipe of the water tank.

[0015] In a preferred embodiment, a pressure sensor is provided on the water inlet pipeline.

[0016] A liquid level sensor is arranged in the water inlet pipeline, and the height of the liquid level sensor is higher than the top of the reverse osmosis filter element.

[0017] In a preferred embodiment, a one-way valve is provided at the air inlet at the top end of the waste water pipe, so that the water in the pipe cannot flow out through the air inlet.

[0018] In a preferred embodiment, a sterilization device is provided in the pure water tank.

[0019] In a preferred embodiment, a liquid level meter is provided in the pure water tank;

[0020] An air intake pipe is arranged on the pure water tank, and an air filter element is arranged at the position of the air intake pipe;

[0021] A one-way valve is arranged on the air inlet pipe so that the air inlet pipe only allows air to enter the pure water tank from the outside.

[0022] In a preferred embodiment, a TDS probe is provided in the pure water tank.

[0023] In a preferred embodiment, a one-way valve is arranged in the reflux pipeline so that water can only flow from the reflux valve to the reflux regulating valve.

[0024] In a preferred embodiment, a pre-filter is provided on the water inlet pipeline.

[0025] In a preferred embodiment, a temperature sensor and a TDS probe are provided on the water inlet pipeline.

[0026] The beneficial effects of the utility model include:

[0027] (1) Higher pure water production rate;

[0028] (2) The reverse osmosis filter element has a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic structural diagram of a reverse osmosis water purification system according to a preferred embodiment of the utility model is shown.

[0030] Description of Figure Numbers:

[0031] 1-Reverse osmosis filter element;

[0032] 2-Pure water tank;

[0033] 21- Sterilization device;

[0034] 22-Liquid level gauge;

[0035] 23- Air filter;

[0036] 61-water tank outlet pipe;

[0037] 62-water inlet pipe;

[0038] 63-pure water storage pipeline;

[0039] 64-wastewater pipe;

[0040] 65-Return pipe;

[0041] 611-water flow meter;

[0042] 612-water outlet pump;

[0043] 613- one-way valve;

[0044] 614-pressure switch;

[0045] 621-boosting water pump;

[0046] 622-pressure sensor;

[0047] 623-Liquid level sensor;

[0048] 624-intake and exhaust valves;

[0049] 625-pre-filter;

[0050] 626-water inlet flow meter;

[0051] 627-temperature sensor;

[0052] 628-TDS probe;

[0053] 629-water inlet valve;

[0054] 631-pure water flow meter;

[0055] 632-pure water solenoid valve;

[0056] 641-wastewater regulating valve;

[0057] 651-Return valve;

[0058] 652- Reflux regulating valve;

[0059] 661-wastewater valve;

[0060] 671-first flushing valve;

[0061] 681-Second flush valve. DETAILED DESCRIPTION

[0062] The present invention is further described in detail below through the accompanying drawings and embodiments. Through these descriptions, the features and advantages of the present invention will become clearer and more specific.

[0063] The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. Although various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless otherwise noted.

[0064] According to a reverse osmosis water purification system provided by the utility model, Figure 1 As shown, it includes a reverse osmosis filter element 1 and a pure water tank 2.

[0065] The pure water tank 2 is arranged above the reverse osmosis filter element 1.

[0066] The pure water tank 2 has a water tank outlet pipe 61, on which a water outlet flow meter 611 and a water outlet pump 612 are provided.

[0067] A water inlet pipeline 62 is provided between the water inlet of the reverse osmosis filter element 1 and the tap water pipe, a booster water pump 621 is provided in the water inlet pipeline 62, a portion of the pipeline between the booster water pump 621 and the reverse osmosis filter element 1 is higher than the top of the reverse osmosis filter element 1, and a water inlet flow meter 626 is provided on the water inlet pipeline 62;

[0068] A pure water storage pipeline 63 is provided between the pure water outlet of the reverse osmosis filter element 1 and the pure water tank 2, and a pure water flow meter 631 and a pure water solenoid valve 632 are provided on the pure water storage pipeline 63.

[0069] The wastewater outlet of the reverse osmosis filter element 1 is provided with a wastewater pipe 64, and the wastewater pipe 64 is connected to the wastewater outlet for discharging wastewater out of the reverse osmosis water purification system. The wastewater pipe 64 has an upwardly curved pipeline, so that part of the pipeline of the wastewater pipe 64 is higher than the top of the reverse osmosis filter element 1, and an air inlet is provided at the top of the pipeline of the wastewater pipe 64, and a wastewater regulating valve 641 is provided on the wastewater pipe 64;

[0070] The reverse osmosis water purification system also has a reflux pipeline 65, one end of which is connected to the wastewater outlet of the reverse osmosis filter element 1, and the other end is connected to the water inlet of the reverse osmosis filter element 1. A reflux valve 651 and a reflux regulating valve 652 are arranged in the reflux pipeline 65.

[0071] A three-way pipeline is provided between the reflux valve 651 and the reflux regulating valve 652, the other end of the three-way pipeline is connected to the waste water outlet, and a waste water valve 661 is provided on the three-way pipeline;

[0072] A three-way pipeline is arranged between the water outlet flow meter 611 and the water outlet pump 612, the other end of the three-way pipeline is connected to the waste water outlet of the pure water tank 2, and a first flushing valve 671 is arranged in the three-way pipeline.

[0073] A three-way pipeline is arranged between the pure water flow meter 631 and the pure water solenoid valve 632 , the other end of the three-way pipeline is connected to the waste water pipe 64 , and a second flushing valve 681 is arranged on the three-way pipeline.

[0074] According to the utility model, by setting the second flushing valve 681, the reflux valve 651 and the wastewater regulating valve 641, the pressure sensor 622 and the pure water flow meter 631, the initial flushing of the reverse osmosis filter element 1 is realized. Specifically, the first flushing valve 1, the wastewater valve, the pure water solenoid valve and the water outlet pump are kept in a closed state, the water inlet valve and the second flushing valve 2 and the reflux valve are opened, and then the reflux regulating valve and the wastewater regulating valve are adjusted to the maximum opening, and the booster water pump is started to start the first flushing of the reverse osmosis filter element 1; then the pressure in front of the membrane is detected by the pressure sensor, and when the pressure is less than 100psi, the wastewater regulating valve is adjusted to a small opening, and the reflux regulating valve is adjusted to a small opening at the same time, and the flow rate is continuously detected by the water inlet flow meter and the pure water flow meter, so that the water inlet / pure water flow rate ratio is close to 2:1, and the two regulating valves are stopped when the pressure reaches 100psi, so as to realize the efficient initial flushing of the reverse osmosis filter element 1, so as to improve the service life of the reverse osmosis filter element 1.

[0075] In a preferred embodiment, a pressure switch 614 is provided on the water tank outlet pipe 61 .

[0076] According to the utility model, during the pure water production process, the pure water solenoid valve is opened, and the second flushing valve is closed to replenish water to the pure water tank; while the waste water regulating valve is adjusted down, the reflux valve is adjusted so that the pressure is maintained at 100psi, and the inlet water / pure water flow rate ratio is kept constant after approaching 10:9, until the liquid level gauge in the pure water tank detects the set high water level, the booster water pump is turned off first, and then the inlet valve and the pure water solenoid valve are closed to stop water production;

[0077] Then start the water outlet pump. At this time, since the faucet at the water outlet is not opened, the pressure switch will quickly reach a high-pressure state and send out a shutdown signal, causing the water outlet pump to stop running and completing the water production process.

[0078] Furthermore, a one-way valve 613 is provided on the water outlet pipe 61 of the water tank to prevent the air at the water outlet from flowing back into the water outlet pipe.

[0079] In a preferred embodiment, a pressure sensor 622 is provided on the water inlet pipe 62.

[0080] A liquid level sensor 623 is provided in the water inlet pipeline 62 , and the height of the liquid level sensor 623 is higher than the top of the reverse osmosis filter element 1 .

[0081] Furthermore, an inlet and outlet port is provided on the water inlet pipe 62 , and an inlet and outlet valve 624 is provided before the inlet and outlet port.

[0082] According to the utility model, after water production is completed, the reverse osmosis filter element 1 is flushed to increase the service life of the reverse osmosis filter element 1. Specifically, after water production is completed, the waste water valve is opened to drain water for pressure relief. After the pressure sensor detects that the pressure is 0, the reflux valve and the inlet and outlet valves 624 are opened, and the water stored on the concentrated water side of the reverse osmosis filter element 1 will be discharged through the waste water pipe under the action of gravity. After the water stored on the concentrated water side of the reverse osmosis filter element has completely flowed out, the reflux valve and the waste water valve are closed, and the inlet and outlet valves 624 are kept open. Then, the first flushing valve is opened to allow the water in the pure water tank to flow into the reverse osmosis filter element under the action of gravity, until the liquid level sensor 623 detects that the liquid level is higher than the top of the reverse osmosis filter element, and then the first flushing valve and the inlet and outlet valves 624 are closed, so that the high-concentration water on the concentrated water side of the reverse osmosis filter element is completely replaced by pure water, thereby increasing the service life of the reverse osmosis filter element.

[0083] In a preferred embodiment, a one-way valve 613 is provided at the air inlet position at the top end of the waste water pipe 64 so that the water in the pipe cannot flow out through the air inlet.

[0084] In a preferred embodiment, a sterilization device 21 is provided in the pure water tank 2 to ensure that the pure water in the tank is in a sterile state.

[0085] In the present invention, the specific structure of the sterilization device is not limited, for example, UV sterilization can be used.

[0086] In a preferred embodiment, a liquid level meter 22 is provided in the pure water tank 2;

[0087] An air inlet pipe is arranged on the pure water tank 2, and an air filter is arranged at the position of the air inlet pipe;

[0088] A one-way valve 613 is provided on the air inlet pipe so that the air inlet pipe only allows air to enter the pure water tank from the outside.

[0089] In a preferred embodiment, an air filter element 23 is provided on the air inlet pipe for filtering the air entering the pure water tank 2 .

[0090] In a preferred embodiment, an exhaust pipe is provided on the pure water tank 2, and a one-way valve 613 is provided on the exhaust pipe, so that the exhaust pipe only allows air to be discharged from the pure water tank to the outside.

[0091] In a preferred embodiment, a one-way valve 613 is provided in the reflux pipeline 65 , so that water can only flow from the reflux valve 651 to the reflux regulating valve 652 .

[0092] In a preferred embodiment, a pre-filter element 625 is provided on the water inlet pipeline 62 to protect the reverse osmosis filter element.

[0093] The pre-filter element is a filter element commonly used in the art, and is used for preliminary filtration of tap water, such as an activated carbon filter element, a PP cotton filter element, and a pre-composite filter element is more preferably used.

[0094] In a preferred embodiment, a temperature sensor 627, a TDS probe 628 and a water inlet valve 629 are provided on the water inlet pipeline 62 for detecting and controlling the water entering the reverse osmosis filter element.

[0095] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", etc. indicate positions or positional relationships based on the working state of the present invention, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", and "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0096] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0097] The present invention has been described above in conjunction with preferred embodiments, but these embodiments are only exemplary and serve only as an illustration. On this basis, the present invention may be subjected to a variety of substitutions and improvements, all of which fall within the scope of protection of the present invention.

Claims

1. A reverse osmosis water purification system, It is characterized in that It comprises a reverse osmosis filter element (1) and a pure water tank (2), The pure water tank (2) is arranged above the reverse osmosis filter element (1). The pure water tank (2) has a water tank outlet pipe (61), and the water tank outlet pipe (61) is provided with an outlet flow meter (611) and an outlet pump (612). A water inlet pipeline (62) is provided between the water inlet of the reverse osmosis filter element (1) and the tap water pipe, a booster water pump (621) is provided in the water inlet pipeline (62), a portion of the pipeline between the booster water pump (621) and the reverse osmosis filter element (1) is higher than the top of the reverse osmosis filter element (1), and a water inlet flow meter (626) is provided on the water inlet pipeline (62); A pure water storage pipeline (63) is provided between the pure water outlet of the reverse osmosis filter element (1) and the pure water tank (2), and a pure water flow meter (631) and a pure water solenoid valve (632) are provided on the pure water storage pipeline (63). The wastewater outlet of the reverse osmosis filter element (1) is provided with a wastewater pipe (64), the wastewater pipe (64) is connected to the wastewater outlet and is used to discharge wastewater from the reverse osmosis water purification system, the wastewater pipe (64) has an upwardly curved pipeline, so that part of the wastewater pipe (64) is higher than the top of the reverse osmosis filter element (1), an air inlet is provided at the top of the wastewater pipe (64), and a wastewater regulating valve (641) is provided on the wastewater pipe (64); The reverse osmosis water purification system further comprises a reflux pipeline (65), one end of which is connected to the wastewater outlet of the reverse osmosis filter element (1), and the other end of which is connected to the water inlet of the reverse osmosis filter element (1). A reflux valve (651) and a reflux regulating valve (652) are arranged in the reflux pipeline (65). A three-way pipeline is provided between the reflux valve (651) and the reflux regulating valve (652), the other end of the three-way pipeline is connected to the waste water outlet, and a waste water valve (661) is provided on the three-way pipeline; A three-way pipeline is provided between the water outlet flow meter (611) and the water outlet pump (612), the other end of the three-way pipeline is connected to the waste water outlet of the pure water tank (2), and a first flushing valve (671) is provided in the three-way pipeline; A three-way pipeline is arranged between the pure water flow meter (631) and the pure water solenoid valve (632), the other end of the three-way pipeline is connected to the waste water pipe (64), and a second flushing valve (681) is arranged on the three-way pipeline.

2. The reverse osmosis water purification system according to claim 1, It is characterized in that A pressure switch (614) is provided on the water tank water outlet pipe (61).

3. The reverse osmosis water purification system according to claim 1, It is characterized in that A pressure sensor (622) is provided on the water inlet pipeline (62). A liquid level sensor (623) is provided in the water inlet pipeline (62), and the height of the liquid level sensor (623) is higher than the top of the reverse osmosis filter element (1).

4. The reverse osmosis water purification system according to claim 1, It is characterized in that A one-way valve (613) is provided at the air inlet position at the top end of the waste water pipe (64), so that the water in the pipe cannot flow out through the air inlet.

5. The reverse osmosis water purification system according to claim 1, It is characterized in that A sterilization device (21) is provided in the pure water tank (2).

6. The reverse osmosis water purification system according to claim 1, It is characterized in that A liquid level meter (22) is arranged in the pure water tank (2); An air intake pipe is arranged on the pure water tank (2), and an air filter element is arranged at the position of the air intake pipe; A one-way valve (613) is arranged on the air inlet pipe so that the air inlet pipe only allows air to enter the pure water tank from the outside.

7. The reverse osmosis water purification system according to claim 1, It is characterized in that A TDS probe is provided in the pure water tank (2).

8. The reverse osmosis water purification system according to claim 1, It is characterized in that A one-way valve (613) is provided in the reflux pipeline (65), so that water can only flow from the reflux valve (651) to the reflux regulating valve (652).

9. The reverse osmosis water purification system according to claim 1, It is characterized in that A pre-filter element (625) is arranged on the water inlet pipeline (62).

10. The reverse osmosis water purification system according to claim 1, It is characterized in that A temperature sensor (627) and a TDS probe (628) are provided on the water inlet pipeline (62).

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