Water purifier capable of preventing blocking of concentrated water electromagnetic valve

Abstract

The water purifier comprises a front filter element, a first water inlet electromagnetic valve, a booster pump, an RO (reverse osmosis) filter element, the concentrated water electromagnetic valve, a check valve, a pure water faucet and a high-pressure switch, the front filter element, the first water inlet electromagnetic valve, the booster pump, the RO filter element, the check valve and the pure water faucet are sequentially connected, the concentrated water electromagnetic valve is connected with the RO filter element, and the high-pressure switch is connected with the RO filter element. Raw water flows in from the front filter element, concentrated water flows out from the concentrated water electromagnetic valve, pure water flows out from the pure water faucet, one end of the flushing electromagnetic valve is connected to a flushing water source, the other end of the flushing electromagnetic valve is connected with the concentrated water electromagnetic valve, and the flushing electromagnetic valve is opened to flush the concentrated water electromagnetic valve. According to the water purifier capable of preventing the concentrated water electromagnetic valve from being blocked, disclosed by the utility model, the concentrated water electromagnetic valve can be simply and effectively washed through the arrangement of the washing electromagnetic valve.

Description

Technical Field

[0001] The utility model relates to a water purifier, and more specifically to a water purifier that prevents the clogging of the concentrated water solenoid valve. Background Art

[0002] The water quality in China is complex and diverse. Especially in the north, due to the high alkalinity and hardness, when using a water purifier with an RO membrane in these areas, the TDS at the concentrated water outlet of the RO membrane is concentrated several times. Since the flow hole of the concentrated water solenoid valve installed at the concentrated water outlet of the RO membrane is small, the concentrated water is not easily diluted and is prone to crystallization, resulting in its blockage. Once the concentrated water solenoid valve is blocked, the RO membrane cannot be flushed during use, and the RO membrane will soon be blocked, greatly increasing the user's usage cost and the machine failure rate.

[0003] Therefore, in the current prior art, a utility model patent with the patent number 201710299406.8 and the name of a water purifier with a function of replacing concentrated water with pure water discloses that by setting a pressure bucket, then: when the water production is completed and the pressure bucket is full of water, the inlet solenoid valve and the booster pump are closed, the reflux solenoid valve and the concentrated water solenoid valve are opened, the pure water in the pressure bucket enters the RO filter element through the pure water return passage, and after the concentrated water in the RO filter element is discharged through the concentrated water solenoid valve, the concentrated water solenoid valve and the reflux solenoid valve are closed, and the RO filter element is filled with pure water to realize the flushing of the RO filter element. However, the above scheme is mainly for the flushing of the RO membrane and cannot thoroughly flush the concentrated water solenoid valve. Summary of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the purpose of the present utility model is to provide a water purifier that can effectively and thoroughly flush the concentrated water solenoid valve and prevent the clogging of the concentrated water solenoid valve.

[0005] To achieve the above purpose, the present utility model provides the following technical solution: A water purifier that prevents the clogging of the concentrated water solenoid valve, including a pre-filter, a first inlet solenoid valve, a booster pump, an RO filter element, a concentrated water solenoid valve, a check valve, a pure water faucet, and a high-pressure switch. The pre-filter, the first inlet solenoid valve, the booster pump, the RO filter element, the check valve, and the pure water faucet are connected in sequence. The concentrated water solenoid valve is connected to the RO filter element. Raw water flows in from the pre-filter, concentrated water flows out from the concentrated water solenoid valve, and pure water flows out from the pure water faucet. Its characteristics are: It further includes a flushing solenoid valve. One end of the flushing solenoid valve is connected to a flushing water source, and the other end is connected to the concentrated water solenoid valve to flush the concentrated water solenoid valve after the flushing solenoid valve is opened.

[0006] As a further improvement of the present utility model, the flushing water source includes a small pressure bucket. The water inlet of the small pressure bucket is connected to the check valve, and the water outlet is connected to the flushing solenoid valve to receive the pure water output by the check valve and serve as the flushing water source to the flushing solenoid valve.

[0007] As another further improvement of the present utility model, the flushing solenoid valve includes a second inlet solenoid valve and a third inlet solenoid valve. One end of the second inlet solenoid valve is connected to the RO filter element, and the other end is connected to the concentrated water solenoid valve. One end of the third inlet solenoid valve is connected to a position between the RO filter element and the check valve, and the other end is connected to a position between the second inlet solenoid valve and the concentrated water solenoid valve, so as to receive the pure water output by the RO filter element as the flushing water source and pass through the third inlet solenoid valve to the concentrated water solenoid valve.

[0008] As another further improvement of the present utility model, the flushing solenoid valve includes a second inlet solenoid valve. One end of the second inlet solenoid valve is connected to the pre-filter element, and the other end is connected to a position between the RO filter element and the concentrated water solenoid valve, so as to receive the raw water output by the pre-filter element as the flushing water source and pass through the second inlet solenoid valve to the concentrated water solenoid valve.

[0009] The beneficial effects of the present utility model are as follows: a flushing water source and a flushing solenoid valve are arranged inside the machine. When the machine is making water, the pure water of the RO membrane filter element fills the small pressure bucket. When the pure water faucet is closed, the small pressure bucket relies on the pressure of the pressure bucket itself to press the pure water back to the concentrated water solenoid valve, dilute and flush the solenoid valve, preventing the high-TDS water quality in the solenoid valve cavity from scaling and blocking the concentrated water solenoid valve. Overcoming the problem that the concentrated water solenoid valve of the existing water purifiers on the market is blocked due to the high-TDS water quality at the concentrated water outlet of the RO membrane. After each water production is completed, the control module flushes the concentrated water solenoid valve with the outlet water or the raw water according to the design requirements, diluting the TDS in the concentrated water solenoid valve cavity, thereby greatly reducing the scaling phenomenon of the concentrated water solenoid valve. Description of the Drawings

[0010] Figure 1 It is the module block diagram of the pure water production state of Embodiment 1;

[0011] Figure 2 It is the module block diagram of the flushing solenoid valve state of Embodiment 1;

[0012] Figure 3 It is the module block diagram of the pure water production state of Embodiment 2;

[0013] Figure 4 It is the module block diagram of the flushing solenoid valve state of Embodiment 2;

[0014] Figure 5 It is the module block diagram of the pure water production state of Embodiment 3;

[0015] Figure 6 It is the module block diagram of the flushing solenoid valve state of Embodiment 3. Detailed Embodiments

[0016] The following will further elaborate on the present utility model in conjunction with the embodiments given in the drawings.

[0017] Refer to Figures 1 to 2 As shown, the first embodiment of the present invention provides a water purifier that prevents the clogging of the concentrated water solenoid valve. This embodiment specifically includes a pre-filter 1, a first inlet solenoid valve 2, a booster pump 3, an RO filter 4, a concentrated water solenoid valve 5, a second inlet solenoid valve 6, a high-pressure switch 8, a check valve 7, a pure water faucet 9, and a small pressure tank 10. The inlet of the pre-filter 1 is connected to the raw water, the outlet of the pre-filter 1 is connected to the inlet of the first inlet solenoid valve 2, the outlet of the first inlet solenoid valve 2 is connected to the inlet of the booster pump 3, the outlet of the booster pump 3 is connected to the inlet of the RO filter 4, the outlet of the RO filter 4 is divided into a concentrated water outlet and a pure water outlet, the concentrated water outlet of the RO filter 4 is connected to the inlet of the concentrated water solenoid valve 5 and the outlet of the second inlet solenoid valve 6, the pure water outlet of the RO filter 4 is connected to the inlet of the check valve 7, the outlet of the small pressure tank 10 is connected to the inlet of the second solenoid valve 2, and the outlet of the check valve 7 is connected to the inlet of the high-pressure switch 8, the inlet of the pure water faucet 9, and the inlet of the small pressure tank 10. To implement the above technical solution, it further includes a control module and a power supply; the control module controls the operation of the above first inlet solenoid valve 2, booster pump 3, concentrated water solenoid valve 5, and second inlet solenoid valve 6, and the power supply provides the working voltage for them.

[0018] In this embodiment, the technical solution of the first embodiment is adopted to produce pure water and the working states of flushing the solenoid valve are as follows:

[0019] Pure water production state: As Figure 1 shown, when the pressure value of the high-pressure switch 8 is lower than the set value, the control module 11 controls the first solenoid valve 2 to be in the open state, the booster pump 3 to be in the working state, and the second solenoid valve 6 to be in the closed state. The raw water passes through the pre-filter 1 and the first inlet solenoid valve 2, is pressurized by the booster pump 3 and reaches the RO filter 4, and the water in the small pressure tank 10 is filled from the pure water outlet of the RO filter 4. After that, the pure water faucet 9 is closed, and when the high-pressure switch 8 monitors that the system pressure value is higher than the set value, the control module 11 closes the first inlet solenoid valve 2, the booster pump 3, and the second inlet solenoid valve 6.

[0020] Flushing solenoid valve state: As Figure 2 shown, when the pure water faucet 9 is closed and the high-pressure switch 8 monitors that the system pressure value is higher than the set value, the control module 11 controls the first inlet solenoid valve 2 and the booster pump 3 to be in the closed state, and the second inlet solenoid valve 6 and the concentrated water solenoid valve 5 to be in the open state according to the set flushing solenoid valve program. At this time, the pure water stored in the small pressure tank 10 passes through the second inlet solenoid valve 6 and reaches the concentrated water solenoid valve 5. At this time, the pure water flushes the concentrated water solenoid valve 5 to dilute the high-TDS water quality inside the concentrated water solenoid valve and reduce internal scaling.

[0021] Reference Figures 3 to 4 As shown, the second embodiment of a water purifier for preventing the clogging of the concentrated water solenoid valve is provided in this embodiment. This embodiment specifically includes a pre-filter 1, a first inlet solenoid valve 2, a booster pump 3, an RO filter 4, a concentrated water solenoid valve 5, a second inlet solenoid valve 6, a third inlet solenoid valve 13, a high-pressure switch 8, a check valve 7, and a pure water faucet 9. The water inlet of the pre-filter 1 is communicated with the raw water, the water outlet of the pre-filter 1 is communicated with the water inlet of the first inlet solenoid valve 2, the water outlet of the first inlet solenoid valve 2 is communicated with the water inlet of the booster pump 3, the water outlet of the booster pump 3 is communicated with the water inlet of the RO filter 4, the water outlet of the RO filter 4 is divided into a concentrated water outlet and a pure water outlet, the concentrated water outlet of the RO filter 4 is communicated with the water inlet of the second inlet solenoid valve 6, the second inlet solenoid valve 6 is communicated with the water inlet of the concentrated water solenoid valve 5 and the water outlet of the third inlet solenoid valve 13, the pure water outlet of the RO filter 4 is communicated with the water inlet of the third inlet solenoid valve 13 and the water inlet of the check valve 7, and the water outlet of the check valve 7 is communicated with the water inlet of the high-pressure switch 8 and the water inlet of the pure water faucet 9. The second inlet solenoid valve 6 and the third inlet solenoid valve 13 described above may also be three-way valves. Similarly, this embodiment of the present invention further includes a control module and a power supply; the control module controls the operation of the first inlet solenoid valve 2, the booster pump 3, the concentrated water solenoid valve 5, and the second inlet solenoid valve 6, and the power supply provides the working voltage for them.

[0022] In this embodiment, the technical solution of the second embodiment is adopted to produce pure water and wash the working state of the solenoid valve as follows:

[0023] Pure water production state: As Figure 3 shown, when the pure water faucet 9 is opened and the high-pressure switch 8 monitors that the system pressure is lower than the set value, the control module 11 controls the first inlet solenoid valve 2 to open, the booster pump 3 to be in the working state, the second inlet solenoid valve 6 to open, and the third inlet solenoid valve 13 to close. The raw water enters from the water inlet of the pre-filter 1, reaches the RO filter 4 through the booster pump 3, the pure water passes through the check valve 7 and exits from the water outlet of the pure water faucet 9, and the concentrated water reaches the concentrated water solenoid valve 5 from the second solenoid valve 6 and is discharged. At this time, the water discharged from the concentrated water solenoid valve has a much higher TDS than the raw water.

[0024] Solenoid valve flushing state: As Figure 4As shown, when the concentrated water solenoid valve 5 needs to be flushed, the pure water faucet 9 is closed. The control module 11 controls the first inlet solenoid valve 2 to open, the booster pump 3 to be in the working state, the second inlet solenoid valve 6 to close, and the third inlet solenoid valve 13 and the concentrated water solenoid valve 5 to be in the open state. At this time, the raw water enters from the pre-filter 1 through the first inlet solenoid valve 2, is pressurized by the booster 3 and flows out from the pure water outlet of the RO filter element 4. The third inlet solenoid valve 13 is in the open state. At this time, the pure water flows out from the concentrated water solenoid valve, so as to remove the high TDS water quality remaining inside the concentrated water solenoid valve and prevent it from scaling.

[0025] Refer to Figures 5 to 6 As shown, this embodiment provides a third implementation manner of a water purifier for preventing blockage of a concentrated water solenoid valve. This implementation manner specifically includes a pre-filter 1, a first inlet solenoid valve 2, a booster pump 3, an RO filter element 4, a concentrated water solenoid valve 5, a second inlet solenoid valve 6, a high-pressure switch 8, a check valve 7, and a pure water faucet 9. The water inlet of the pre-filter 1 is communicated with the raw water, the water outlet of the pre-filter 1 is communicated with the water inlets of the first inlet solenoid valve 2 and the second inlet solenoid valve 6, the water outlet of the second inlet solenoid valve 6 is communicated with the water inlet of the concentrated water solenoid valve 5, the water outlet of the first inlet solenoid valve 2 is communicated with the water inlet of the booster pump 3, the water outlet of the booster pump 3 is communicated with the water inlet of the RO filter element 4, the water outlet of the RO filter element 4 is divided into a concentrated water outlet and a pure water outlet, the concentrated water outlet of the RO filter element 4 is communicated with the water inlet of the concentrated water solenoid valve, the pure water outlet of the RO filter element 4 is communicated with the water inlet of the check valve 7, and the water outlet of the check valve 7 is communicated with the water inlets of the high-pressure switch 8 and the pure water faucet 9. To implement the above technical solutions, this embodiment also includes a control module and a power supply; the control module controls the operation of the above first inlet solenoid valve 2, booster pump 3, concentrated water solenoid valve 5, and second inlet solenoid valve 6, and the power supply provides the working voltage for it.

[0026] In this embodiment, the technical solutions of the third implementation manner are adopted to produce pure water and flush the solenoid valve, and the working states are as follows:

[0027] State of producing pure water: As Figure 5 shown, when the pure water faucet 9 is opened and the high-pressure switch 8 monitors that the system pressure is lower than the set value, the control module 11 controls the first inlet solenoid valve 2 to open, the booster pump 3 to be in the working state, and the second inlet solenoid valve 6 to close. The raw water enters from the water inlet of the pre-filter 1, reaches the RO filter element 4 through the booster pump 3, the pure water passes through the check valve 7 and flows out from the water outlet of the pure water faucet 9, and the concentrated water is discharged from the concentrated water solenoid valve 5. At this time, the water discharged from the concentrated water solenoid valve has a much higher TDS than the raw water.

[0028] State of flushing the solenoid valve: As Figure 6As shown, when the concentrated water solenoid valve 5 needs to be flushed, the pure water faucet 9 is closed. The control module 11 controls the first inlet solenoid valve 2 to close, the booster pump 3 to be in the closed state, and the second inlet solenoid valve 6 to be in the open state. The concentrated water solenoid valve 5 is in the open state. At this time, the raw water passes through the second inlet solenoid valve 6 from the pre-filter element 1 and finally discharges from the concentrated water solenoid valve 5, thereby reducing the high TDS water quality remaining inside the concentrated water solenoid valve and preventing it from scaling. The connecting pipeline of the second solenoid valve 6 is not limited to the current schematic diagram.

[0029] In summary, for the water purifier for preventing the concentrated water solenoid valve from being blocked provided in this embodiment, through the setting of the flushing solenoid valve and the flushing water source, the flushing function of the concentrated water solenoid valve 5 can be effectively realized.

[0030] The above is only the preferred implementation mode of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art in this technical field, several improvements and retouches made without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A water purifier for preventing concentrated water electromagnetic valve from being blocked, comprising a pre-filter element (1), a first water inlet electromagnetic valve (2), a booster pump (3), an RO filter element (4), a concentrated water electromagnetic valve (5), a check valve (7), a pure water tap (9) and a high-pressure switch (8), wherein the pre-filter element (1), the first water inlet electromagnetic valve (2), the booster pump (3), the RO filter element (4), the check valve (7) and the pure water tap (9) are connected in sequence, the concentrated water electromagnetic valve (5) is connected to the RO filter element (4), raw water flows in from the pre-filter element (1), concentrated water flows out from the concentrated water electromagnetic valve (5), and pure water flows out from the pure water tap (9), and the water purifier is characterized in that: It also comprises a flushing solenoid valve, one end of which is connected to a flushing water source, and the other end of which is connected to a concentrated water solenoid valve (5), so as to flush the concentrated water solenoid valve (5) after the flushing solenoid valve is opened.

2. The water purifier for preventing concentrated water solenoid valve from clogging according to claim 1, characterized in that: The flushing water source comprises a small pressure barrel (10), the water inlet of the small pressure barrel (10) is connected to the check valve (7), and the water outlet is connected to the flushing solenoid valve to receive the pure water output by the check valve as a flushing water source to the flushing solenoid valve.

3. The water purifier for preventing concentrated water solenoid valve from clogging according to claim 1, characterized in that: The flushing solenoid valve comprises a second water inlet solenoid valve (6) and a third water inlet solenoid valve (13); one end of the second water inlet solenoid valve (6) is connected to the RO filter element (4), and the other end is connected to the concentrated water solenoid valve (5); one end of the third water inlet solenoid valve (13) is connected to a position between the RO filter element (4) and the check valve (7), and the other end is connected to a position between the second water inlet solenoid valve (6) and the concentrated water solenoid valve (5), so as to receive pure water output from the RO filter element (4) as a flushing water source through the third water inlet solenoid valve (13) to the concentrated water solenoid valve (5).

4. The water purifier for preventing concentrated water solenoid valve from clogging according to claim 1, characterized in that: The flushing solenoid valve comprises a second water inlet solenoid valve (6), one end of which is connected to the pre-filter element (1), and the other end of which is connected to a position between the RO filter element (4) and the concentrated water solenoid valve (5), so as to receive raw water output from the pre-filter element (1) as a flushing water source through the second water inlet solenoid valve (6) to the concentrated water solenoid valve (5).

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