Water purifier capable of saving water through micro wastewater internal circulation

Abstract

The utility model relates to the technical field of water purifiers, and discloses a micro wastewater internal circulation water-saving water purifier which comprises a first water inlet pipe, an inflow one-way valve, a three-way structure A, a booster pump, a membrane element, a pure water pipe, a three-way structure C, a wastewater ratio, a backflow one-way valve, a three-way structure B, a TDS probe and a wastewater pipe. By adopting the structure, the washing time of the wastewater electromagnetic valve can be adjusted according to the TDS value of the wastewater detected by the TDS probe, if in a city with poor water quality, when the electric control board of the water purifier receives that the TDS value of the wastewater detected by the TDS probe is relatively high, the electric control board controls the wastewater electromagnetic valve to be opened for a relatively long time, and relatively much wastewater flows out, so that the washing time of the wastewater electromagnetic valve is adjusted. Therefore, the service life of the membrane element is effectively prolonged; when the quality of tap water in some areas is good and the TDS probe detects that the TDS value of wastewater flowing out through the membrane element is relatively low, the electric control board of the water purifier can shorten the time for opening the wastewater electromagnetic valve, and relatively less wastewater flows out, so that the water purifier has important significance for saving water.

Description

Technical Field

[0001] The utility model relates to the technical field of water purifiers, in particular to a water purifier capable of internally circulating micro-wastewater and saving water. Background Art

[0002] There are many kinds of micro-wastewater purifiers on the market now. The most common ones are to repeatedly use the internally circulated wastewater, and then discharge the super-concentrated wastewater through the wastewater solenoid valve at regular intervals. However, the flushing valve opening time of the micro-wastewater purifiers on the market is fixed, so it cannot be treated differently in cities with different water quality, which will reduce the service life of the membrane elements in the water purifier. Utility Model Content

[0003] The utility model mainly provides a water purifier with internal circulation and water saving for micro-waste water, so as to solve the problem that the flushing valve opening time of the micro-waste water purifier on the existing market is fixed, so that cities with different water quality cannot be treated differently, which will lead to the problem of shortening the service life of the membrane element in the water purifier.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A water purifier for micro-wastewater internal circulation and water saving, comprising a first water inlet pipe, the first water inlet pipe is connected to an inlet check valve, the inlet check valve is connected to the first end of a three-way structure A; the second end of the three-way structure A is connected to a booster pump, the booster pump is connected to a membrane element, the pure water port of the membrane element is connected to a pure water pipe, the wastewater port of the membrane element is connected to the first end of a three-way structure C, the second end of the three-way structure C is connected to a wastewater ratio, the wastewater ratio is connected to a reflux check valve, the reflux check valve is connected to the third end of the three-way structure A; the third end of the three-way structure C is connected to the first end of the three-way structure B, the second end of the three-way structure B is provided with a TDS probe, and the third end of the three-way structure B is connected to the wastewater pipe. Wherein, the TDS probe can be pre-set for TDS value detection, so as to detect the TDS value, and then send the detected TDS value to the electric control board of the entire water purifier. Each component that needs to be controlled in this application is electrically connected or signal-connected to the electronic control board of the water purifier, so that it can be controlled by the electronic control board of the water purifier. The output end of the pure water pipe is connected to the clean water tank, which is used to store clean water after filtration. When the clean water tank is full, the water level switch on the clean water tank is used to control the water purifier to stop working. The wastewater ratio can use a manually adjustable valve or ball valve. A wastewater ratio is connected in parallel to the inlet and outlet of the wastewater solenoid valve. When the water purifier is making water normally, the wastewater is not discharged through the wastewater solenoid valve. A small amount of wastewater will be discharged to the outside through the parallel wastewater ratio. The wastewater solenoid valve is only opened during flushing. At this time, more wastewater will be discharged to the outside, which can flush away impurities on the surface of the membrane element and wastewater in the pipeline. The self-priming water purifier cancels the low-pressure switch, and the water inlet solenoid valve is connected in series between the booster pump and the membrane element. By adopting the structure of the present application, the TDS value of the wastewater can be detected according to the TDS probe, thereby adjusting the flushing time of the wastewater solenoid valve. If in a city with poor water quality, when the electronic control board of the water purifier receives a message from the TDS probe and detects that the TDS value of the wastewater is relatively high, the electronic control board will control the wastewater solenoid valve to open for a longer time, and relatively more wastewater will flow out, thereby effectively improving the service life of the membrane element. For some areas with good tap water quality, when the TDS probe detects that the TDS value of the wastewater flowing out through the membrane element is relatively low, the electronic control board of the water purifier will shorten the time to open the wastewater solenoid valve, and relatively less wastewater will flow out, which is of great significance for saving water.

[0006] Among them, the water purification tank works in mode 1: the water purification tank is used to store clean water after filtration. When the water purification tank is full, the water level switch on the water purification tank is used to control the water purifier to stop working. The water purification tank and the water level switch are replaced with a high-pressure switch and a faucet. When the faucet is closed and the pressure in the pure water pipe rises to the set value of the high-pressure switch, the power supply of the booster pump is automatically cut off. When the faucet is opened, the pressure in the pure water pipe is released, the high-pressure switch is turned on, and the booster pump starts to work to produce clean water.

[0007] Working mode 2 of the clean water tank: The clean water tank is used to store clean water after filtration. When the clean water tank is full, the water level switch on the clean water tank is used to control the water purifier to stop working, and it is replaced with a high-pressure switch, a pressure water storage barrel and a faucet. After closing the faucet, the booster pump needs to continue to supply water to the pressure water storage barrel. When the pressure in the water storage barrel reaches the set value of the high-pressure switch, the power supply of the booster pump is automatically disconnected. When the faucet is turned on, water is supplied to the faucet through the water storage barrel. At this time, the booster pump will not work. The booster pump will only start working when the water in the water storage barrel is released to a pressure lower than the set pressure value of the high-pressure switch.

[0008] Furthermore, a wastewater solenoid valve is provided between the wastewater pipe and the three-way structure B.

[0009] Furthermore, the water inlet end of the first water inlet pipe is connected with a water inlet solenoid valve, the water inlet solenoid valve is connected with the first end of the three-way structure D, the second end of the three-way structure D is provided with a low-pressure switch, and the third end of the three-way structure D is connected with a 5-micron fiber filter element. Among them, the low-pressure switch and the water inlet solenoid valve are not limited to behind the 5-micron fiber filter element, but can be at any point before the booster pump. The water inlet check valve and the three-way structure A are not limited to before the second-stage pre-activated carbon filter element, but can be before or after any filter element of the first three filter elements.

[0010] Furthermore, the second end of the three-way structure A is connected to the pre-activated carbon filter element, the pre-activated carbon filter element is connected to the 1-micron fiber filter element, and the 1-micron fiber filter element is connected to the booster pump.

[0011] Furthermore, the wastewater solenoid valve adopts a solenoid valve with an internal integrated throttling hole. When the wastewater solenoid valve is not powered on, a certain amount of wastewater will be discharged through the internal integrated throttling hole, and more wastewater will flow out of the wastewater solenoid valve after power is turned on.

[0012] Furthermore, a flow limiting hole is provided inside the wastewater tank. In the above-mentioned working mode 1 or 2 of the water purification tank, a post-activated carbon filter is provided at the front end of the water purification tank to further improve the taste of pure water and inhibit bacterial growth.

[0013] Furthermore, a post-activated carbon filter is provided between the pure water pipe and the clean water tank.

[0014] Beneficial effect: With the structure of the present application, the TDS value of wastewater can be detected according to the TDS probe, thereby adjusting the flushing time of the wastewater solenoid valve. If in a city with poor water quality, when the electrical control board of the water purifier receives the TDS probe detecting that the TDS value of the wastewater is relatively high, the electrical control board controls the wastewater solenoid valve to be open for a longer time, and relatively more wastewater flows out, thereby effectively improving the service life of the membrane element; for some areas with good tap water quality, when the TDS probe detects that the TDS value of the wastewater flowing out through the membrane element is relatively low, the electrical control board of the water purifier will shorten the time to open the wastewater solenoid valve, and relatively less wastewater will flow out, which is of great significance for saving water. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of a water purifier according to Embodiment 1;

[0016] Figure 2 This is a schematic diagram of the structure of a water purifier according to Embodiment 2.

[0017] Figure numerals: first water inlet pipe 1, one-way valve 2, first connecting pipe 3, three-way structure A4, second connecting pipe 5, booster pump 6, third connecting pipe 7, membrane element 8, reflux one-way valve 9, three-way structure B10, TDS probe 11, connecting pure water pipe 12, fourth connecting pipe 13, three-way structure C14, fifth connecting pipe 15, wastewater ratio 16, sixth connecting pipe 17, seventh connecting pipe 18, wastewater solenoid valve 19, wastewater pipe 20; second water inlet pipe 21, 5-micron fiber filter element 22, eighth connecting pipe 23, three-way structure D24, low-pressure switch 25, ninth connecting pipe 26, water inlet solenoid valve 27, tenth connecting pipe 28, pre-activated carbon filter element 29, eleventh connecting pipe 30, 1-micron fiber filter element 31. DETAILED DESCRIPTION

[0018] The technical solution of a water purifier for saving water through internal circulation of micro-wastewater involved in the utility model will be further described in detail below in combination with an embodiment.

[0019] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 it can be indirectly connected 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.

[0020] Embodiment 1: Figure 1As shown, a water purifier with micro-wastewater internal circulation and water saving comprises a first water inlet pipe 1, wherein the first water inlet pipe 1 is connected to an inlet check valve 2, and the inlet check valve 2 is connected to a first end of a three-way structure A4 through a first connecting pipe 3; the second end of the three-way structure A4 is connected to a booster pump 6 through a second connecting pipe 5, and the booster pump 6 is connected to a membrane element 8 through a third connecting pipe 7, the pure water port of the membrane element 8 is connected to a pure water pipe, and the wastewater port of the membrane element 8 is connected to the three-way structure C14 through a fourth connecting pipe 13. The first end of the three-way structure C14 is connected, the second end of the three-way structure C14 is connected to the wastewater ratio 16 through the fifth connecting pipe 15, the wastewater ratio 16 is connected to the reflux check valve 92 through the sixth connecting pipe 17, and the reflux check valve 92 is connected to the third end of the three-way structure A4; the third end of the three-way structure C14 is connected to the first end of the three-way structure B10 through the seventh connecting pipe 18, the second end of the three-way structure B10 is provided with a TDS probe 11, and the third end of the three-way structure B10 is connected to the wastewater pipe 20. A wastewater solenoid valve 19 is provided between the wastewater pipe 20 and the three-way structure B10. The wastewater solenoid valve 19 adopts a solenoid valve with an internal integrated throttling orifice. A flow limiting orifice is provided inside the wastewater ratio 16. A post-activated carbon filter element is provided between the pure water pipe and the clean water tank.

[0021] When the water purifier is working, the source water flows into the water inlet check valve 2 through the water inlet pipe. The function of the water inlet check valve 2 is to prevent the system circulating water from entering the source water. Then the source water flows into the booster pump 6 through the water inlet check valve 2. The source water pressure will not flow from the water pipe to the waste water ratio 16 because of the obstruction of the reflux check valve 92. The booster pump 6 provides a reasonable working pressure for the membrane element 8. After passing through the membrane element 8, it is divided into two paths. One path of pure water flows out through the pure water pipe, and the pure water flows into the pure water tank through the pure water pipe. The other path of waste water from the membrane element 8 flows into the three-way structure C14. Since the waste water solenoid valve 19 is in a closed state, only a very small amount of waste water passes through the waste water solenoid valve 19. The wastewater flows out through valve 19, and most of the wastewater flows from the three-way structure C14 to the wastewater ratio 16, and then flows from the wastewater ratio 16 to the water inlet end of the booster pump 6 through the reflux check valve 92. The three-way structure C14 is connected to the three-way structure B10, and there is a TDS probe 11 on the three-way structure B10. The size of the small hole inside the wastewater ratio 16 determines the amount of wastewater reflux and the working pressure of the membrane element 8. After cycling for many times, the water purifier electrical control panel opens the wastewater solenoid valve 19, and all wastewater flows to the sewer through the wastewater solenoid valve 19. The TDS probe 11 is used to detect the water quality of the wastewater and automatically adjusts the opening time of the wastewater solenoid valve 19 according to the increase or decrease in water quality.

[0022] By adopting the structure of the present application, the TDS value of the wastewater can be detected according to the TDS probe 11, thereby adjusting the flushing time of the wastewater solenoid valve 19. If in a city with poor water quality, the electrical control board of the water purifier receives the TDS probe 11 detecting that the TDS value of the wastewater is relatively high, the electrical control board controls the wastewater solenoid valve 19 to be opened for a longer time, and relatively more wastewater flows out, thereby effectively improving the service life of the membrane element 8; for some areas with good tap water quality, when the TDS probe 11 detects that the TDS value of the wastewater flowing out through the membrane element 8 is relatively low, the electrical control board of the water purifier will shorten the time to open the wastewater solenoid valve 19, and relatively less wastewater will flow out, which is of great significance for saving water.

[0023] Embodiment 2: Figure 2 As shown, the main structure is consistent with that of the first embodiment. In the second embodiment, the water inlet end of the first water inlet pipe 1 is connected with a water inlet solenoid valve 27, and the water inlet solenoid valve 27 is connected with the first end of the three-way structure D24 through the eighth connecting pipe 23. The second end of the three-way structure D24 is provided with a low-pressure switch 25, and the third end of the three-way structure D24 is connected with the 5-micron fiber filter element 22 through the ninth connecting pipe 26. The second end of the three-way structure A4 is connected with the pre-activated carbon filter element 29 through the tenth connecting pipe 28, and the pre-activated carbon filter element 29 is connected with the 1-micron fiber filter element 31 through the eleventh connecting pipe 30, and the 1-micron fiber filter element 31 is connected with the booster pump 6 through the second connecting pipe 5.

[0024] When the water purifier is working, the source water flows into the 5-micron fiber filter element 22 through the second water inlet pipe 21 to filter large particles of impurities, and then flows into the three-way structure D24 through the eighth connecting pipe 23. The three-way structure D24 is provided with a low-pressure switch 25. The low-pressure switch 25 is used to detect whether there is source water. If the source water is cut off, the low-pressure switch 25 gives a signal to the electric control board, and the whole machine stops working. The source water flows into the water inlet solenoid valve 27 through the ninth connecting pipe 26. The function of the water inlet solenoid valve 27 is to shut off the source water supply when the machine stops. Then, it flows into the water inlet check valve 2 through the first water inlet pipe 1. The function of the water inlet check valve 2 is to prevent the system circulating water from entering the source water. Then, the water flows into the second-stage pre-activated carbon filter element 29 through the tenth connecting pipe 28. The function of the pre-activated carbon filter element 29 is to filter chlorine, pesticides, organic matter, etc. in the water. The water then flows into the third-stage 1-micron fiber filter element 31 through the eleventh connecting pipe 30. The function of the 1-micron fiber microfilter element is to further filter small particles. The booster pump 6 provides a reasonable working pressure for the membrane element 8, and then the membrane element 8 is divided into two paths. One path of pure water flows into the pure water tank through the pure water pipe, and the other path of waste water flows into the three-way structure C14 of the membrane element 8. Since the waste water solenoid valve 19 is in a closed state, only a small amount of waste water flows out of the waste water pipe 20, and most of the waste water flows back to the three-way structure A4 through the waste water ratio 16 and the reflux check valve 92, and then returns to the water inlet end of the booster pump 6 through the pre-activated carbon filter element 29 and the 1-micron fiber filter element 31. The size of the small holes inside the waste water ratio 16 determines the amount of refluxed waste water and the working pressure of the membrane element 8. After the cycle is repeated for many times, the water purifier electrical control board opens the waste water solenoid valve 19, and all waste water flows to the sewer through the waste water solenoid valve 19. There is a three-way structure B10 on the waste water passage, and a TDS probe 11 is provided on the three-way structure B10. The TDS probe 11 is used to detect the water quality of the waste water and automatically adjust the opening time of the waste water solenoid valve 19 according to the increase or decrease of the water quality.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A water purifier for saving water by internal circulation of micro-wastewater, characterized by: The invention comprises a first water inlet pipe (1), wherein the first water inlet pipe (1) is connected to an inlet check valve (2), wherein the inlet check valve (2) is connected to a first end of a three-way structure A (4); the second end of the three-way structure A (4) is connected to a booster pump (6), wherein the booster pump (6) is connected to a membrane element (8), wherein a pure water outlet of the membrane element (8) is connected to a pure water pipe (12), wherein a waste water outlet of the membrane element (8) is connected to a first end of a three-way structure C (14), wherein The second end of the three-way structure C (14) is in communication with a wastewater pipe (16), the wastewater pipe (16) is in communication with a reflux check valve (9), the reflux check valve (9) is in communication with a third end of the three-way structure A (4); the third end of the three-way structure C (14) is in communication with a first end of a three-way structure B (10), a TDS probe (11) is provided at a second end of the three-way structure B (10), and the third end of the three-way structure B (10) is in communication with a wastewater pipe (20).

2. A water purifier for saving water by internal circulation of micro-wastewater according to claim 1, characterized in that: A wastewater solenoid valve (19) is provided between the wastewater pipe (20) and the three-way structure B (10).

3. A water purifier for saving water by internal circulation of micro-wastewater according to claim 1, characterized in that: The water inlet end of the first water inlet pipe (1) is connected to a water inlet solenoid valve (27), the water inlet solenoid valve (27) is connected to a first end of a three-way structure D (24), a low-pressure switch (25) is provided at a second end of the three-way structure D (24), and a third end of the three-way structure D (24) is connected to a 5-micron fiber filter element (22).

4. A water purifier for saving water by internal circulation of micro-wastewater according to claim 3, characterized in that: The second end of the three-way structure A (4) is connected to a pre-activated carbon filter element (29), the pre-activated carbon filter element (29) is connected to a 1-micron fiber filter element (31), and the 1-micron fiber filter element (31) is connected to a booster pump (6).

5. A water purifier for saving water by internal circulation of micro-wastewater according to claim 2, characterized in that: The wastewater solenoid valve (19) is a solenoid valve with an internal integrated throttling hole.

6. A water purifier for saving water by internal circulation of micro-wastewater according to claim 1, characterized in that: The wastewater container (16) is provided with a flow-limiting hole inside.

7. The micro-wastewater internal circulation water-saving water purifier according to claim 1 is characterized by: A post-activated carbon filter is provided between the pure water pipe (12) and the clean water tank.

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