Multi-channel control valve, water purification system and water purification control method

Abstract

The invention relates to the technical field of water purification, and discloses a multi-channel control valve, a water purification system and a water purification control method. The multi-channel control valve comprises a first valve plate which is a three-channel control valve; the second valve plate is a three-channel control valve; the first valve plate and the second valve plate can be attached in a relatively rotating mode, so that channels communicated between the first valve plate and the second valve plate can be switched. When the first valve plate and the second valve plate rotate relatively, a communicated channel between the first valve plate and the second valve plate can be switched, so that the pipeline switching of the water purification system provided with the reverse osmosis filter element can be realized, the parallel connection of at least two reverse osmosis filter elements can be changed into series connection, and the treatment capacity of the water purification system on raw water is improved; the obvious deterioration of the raw water quality can be dealt with, and the water use safety of a user is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of water purification, and in particular to a multi-channel control valve, a water purification system and a water purification control method. Background Art

[0002] Reverse osmosis water purifiers are favored by consumers because they can effectively remove a variety of pollutants in tap water. However, when water pollution incidents occur, such as salt tides, heavy rains, and chemical leakage pollution, the quality of raw water will deteriorate significantly. At this time, the response ability of conventional reverse osmosis water purifiers will deteriorate and cannot guarantee the safety of users' water use. Summary of the invention

[0003] In view of this, the present invention provides a multi-channel control valve, a water purification system and a water purification control method to solve the problem that the reverse osmosis water purifier is insufficient in dealing with the obvious deterioration of raw water quality and cannot ensure the safety of users' water use.

[0004] In a first aspect, the present invention provides a multi-channel control valve, comprising:

[0005] The first valve plate is a three-channel control valve;

[0006] The second valve plate is a three-channel control valve; the first valve plate and the second valve plate are relatively rotatably arranged in close contact, so that the channels communicating between the two can be switched.

[0007] Beneficial effect: When the first valve plate and the second valve plate rotate relative to each other, the channel connecting the two can be switched, thereby enabling the pipeline switching of the water purification system in which it is installed, so that at least two reverse osmosis filter elements can be converted from parallel to series, thereby improving the water purification system's processing capacity for raw water, being able to cope with the significant deterioration of raw water quality, and ensuring the user's water safety.

[0008] In an optional embodiment, the first valve plate includes channel A, channel C, channel E and a first idle channel, and the second valve plate includes channel B, channel D, channel F and a second idle channel; the first valve plate and the second valve plate have a first connected state and a second connected state, in the first connected state, channel A is connected to channel B, channel C is connected to channel D, and channel E is connected to channel F; in the second connected state, channel A is connected to channel D, channel B is connected to channel E, channel C is connected to the second idle channel, and channel F is connected to the first idle channel.

[0009] Beneficial effects: in the first connected state, channel A is connected with channel B, channel C is connected with channel D, channel E is connected with channel F, the first reverse osmosis filter element and the second reverse osmosis filter element in the water purification system are in an associated connection state, and the two reverse osmosis filter elements respectively purify water; while in the second connected state, channel A is connected with channel D, channel B is connected with channel E, channel C is connected with the second idle channel, and channel F is connected with the first idle channel, the first reverse osmosis filter element and the second reverse osmosis filter element in the water purification system are in a series connection state, and the water passing through the first reverse osmosis filter element passes through the second reverse osmosis filter element again for secondary purification. Even when the raw water quality is extremely deteriorated, the raw water is purified through multiple filtrations to meet the drinking water quality requirements, thereby improving the purification system's ability to cope with significantly deteriorated raw water quality, ensuring the quality of the purified water, improving the safety of drinking water, and improving the reliability of the water purification system.

[0010] In an optional embodiment, the first valve piece is a movable valve, and the second valve piece is a fixed valve; or, the first valve piece is a fixed valve, and the second valve piece is a movable valve.

[0011] Beneficial effects: One of the first valve plate and the second valve plate is a movable valve, and the other is a fixed valve. One of the two valve plates that are closely attached rotates relative to the other to achieve changes in the connecting channel. The structure is simple, the channel switching efficiency is high, and the switching reliability is high.

[0012] In an optional embodiment, the first valve disc is a movable valve, and the first valve disc is transmission-connected with a valve disc driving component; or, the second valve disc is a movable valve, and the second valve disc is transmission-connected with a valve disc driving component.

[0013] Beneficial effect: The movable valve rotates under the drive of the driving member connected to it, which is more convenient than manual adjustment and also facilitates intelligent control.

[0014] In a second aspect, the present invention further provides a water purification system having a raw water inlet, a purified water outlet and a waste water outlet, the water purification system comprising:

[0015] Pumping device;

[0016] First reverse osmosis filter element;

[0017] Second reverse osmosis filter element;

[0018] The multi-channel control valve described in any of the above items is connected to the first reverse osmosis filter element and the second reverse osmosis filter element through a pipeline, and can control the first reverse osmosis filter element and the second reverse osmosis filter element to switch between a parallel state and a series state.

[0019] Beneficial effect: The water purification system includes the multi-channel control valve of the present invention, and the multi-channel control valve can control the first reverse osmosis filter element and the second reverse osmosis filter element to switch between a parallel state and a series state. Under normal conditions, the first reverse osmosis filter element and the second reverse osmosis filter element work in parallel. When the water quality deteriorates significantly, the multi-channel control valve is used to switch the connection state of the first reverse osmosis filter element and the second reverse osmosis filter element to a series state, thereby increasing the water purification capacity of the water purification system, so that the pure water can still meet the drinking water quality requirements, thereby improving the ability of the purification system to cope with changes in raw water quality, ensuring the safety of the purified water quality, and improving the reliability of the water purification system.

[0020] In an optional embodiment, the water purification system further includes a wastewater valve assembly, and the wastewater valve assembly is disposed in a wastewater discharge pipeline connected to the wastewater outlet.

[0021] Beneficial effect: a wastewater valve assembly is provided, and when wastewater needs to be discharged, the wastewater discharge pipeline can be connected to the wastewater outlet, which is convenient for operation.

[0022] In an optional embodiment, the wastewater valve assembly includes:

[0023] a first wastewater valve, disposed between the first reverse osmosis filter element and the wastewater outlet;

[0024] The second wastewater valve is arranged between the second reverse osmosis filter element and the wastewater outlet.

[0025] Beneficial effect: Each reverse osmosis filter element is equipped with a corresponding wastewater valve, which can be controlled individually and has higher flexibility.

[0026] In an optional embodiment, the pumping device comprises:

[0027] a first water pump, disposed between the raw water inlet and the first reverse osmosis filter element;

[0028] The second water pump is arranged between the raw water inlet and the second reverse osmosis filter element.

[0029] Beneficial effect: The pumping device for providing water circulation power for the water purification system includes a first water pump that provides pumping power for the pipeline where the first reverse osmosis filter element is located and a second water pump that provides pumping power for the pipeline where the second reverse osmosis filter element is located, thereby facilitating independent water purification of the first reverse osmosis filter element and the second reverse osmosis filter element in a parallel state.

[0030] In an optional embodiment, the water purification system further comprises:

[0031] Control unit;

[0032] A water quality detection unit is arranged at the raw water inlet;

[0033] The valve plate driving member is used to drive the first valve plate or the second valve plate to rotate; the water quality detection unit, the valve plate driving member and the pumping device are respectively connected to the control unit.

[0034] Beneficial effects: A water quality detection unit is set to monitor the raw water quality and feed back to the control unit, so as to adjust the connection status of the first reverse osmosis filter element and the second reverse osmosis filter element according to the change of water quality. When the water quality is normal, the two reverse osmosis filter elements are set in parallel. If the raw water is polluted and the water quality deteriorates due to special circumstances, the control unit can also promptly control the multi-channel control valve to switch the connecting pipeline, and transform the first reverse osmosis filter element and the second reverse osmosis filter element into a series state, thereby improving the water purification system's ability to respond to water quality changes, improving the reliability of the water purification system, and ensuring the safety of users' drinking water.

[0035] In a third aspect, the present invention further provides a water purification control method, which is applicable to the above-mentioned water purification system, and the water purification control method comprises the following steps:

[0036] Obtain the water quality index of raw water and compare it with the preset water quality index;

[0037] Determine whether the water quality exceeds the standard;

[0038] If the water quality exceeds the standard, the first reverse osmosis filter element and the second reverse osmosis filter element are controlled to switch from a parallel state to a series state.

[0039] Beneficial effect: The preset water quality index is the limit water quality index corresponding to the limit processing capacity of the water purification system when the first reverse osmosis filter element and the second reverse osmosis filter element are connected in parallel. At this time, the pure water quality at the outlet of the purified water can just meet the drinking water standard, that is, if the raw water quality index exceeds this preset water quality index, the two reverse osmosis filter elements connected in parallel will not be able to meet the water purification requirements. By obtaining the water quality index of the raw water and comparing it with the preset water quality index, it is determined whether the water quality exceeds the standard. If it exceeds the standard, it is necessary to switch the connection state of the two reverse osmosis filter elements to a series state to improve the processing capacity of the water purification system.

[0040] In an optional embodiment, the water purification control method further comprises the following steps:

[0041] If the water quality is restored to meet the standard, the first reverse osmosis filter element and the second reverse osmosis filter element are controlled to switch from a series state to an associated state.

[0042] Beneficial effect: When the raw water quality is restored and it is determined that the preset water quality is met, the multi-channel water inlet valve can be controlled to return to its original state, and the first reverse osmosis filter element and the second reverse osmosis filter element are switched from the series state back to the original associated state. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the related technologies, the drawings required for use in the specific embodiments or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0044] Figure 1 A schematic diagram of a channel of a first valve plate of a multi-channel control valve according to an embodiment of the present invention;

[0045] Figure 2 A schematic diagram of a channel of a second valve plate of a multi-channel control valve according to an embodiment of the present invention;

[0046] Figure 3 This is a schematic diagram of a channel after the first valve plate of an embodiment of the present invention rotates a certain angle;

[0047] Figure 4 Schematic diagram of the structure of a water purification system according to an embodiment of the present invention, showing the association state of two reverse osmosis filter elements;

[0048] Figure 5 for Figure 4 Schematic diagram of water purification path of the water purification system;

[0049] Figure 6 This is a schematic structural diagram of a water purification system according to an embodiment of the present invention, showing a state where two reverse osmosis filter elements are connected in series;

[0050] Figure 7 for Figure 6 Schematic diagram of water purification path of the water purification system;

[0051] Figure 8 A first control flow chart of the water purification control method of the water purification system of the present invention;

[0052] Fig. 9 This is a second control flow chart of the water purification control method of the water purification system of the present invention.

[0053] Description of reference numerals:

[0054] 10. First valve plate;

[0055] 20. Second valve plate;

[0056] 1. The first reverse osmosis filter element;

[0057] 2. Second reverse osmosis filter element;

[0058] 3. The first wastewater valve;

[0059] 4. Second wastewater valve;

[0060] 5. The first water pump;

[0061] 6. Second water pump;

[0062] 7. Raw water import;

[0063] 8. Purified water outlet;

[0064] 9. Wastewater outlet. DETAILED DESCRIPTION

[0065] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0066] In the description of the invention, it should be noted that, unless otherwise specified, the meaning of "plurality" is two or more; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0067] In the description of the present invention, it is also necessary to explain 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 an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0068] Combine the following Figures 1 to 9 , describing an embodiment of the present invention.

[0069] According to an embodiment of the present invention, on the one hand, a multi-channel control valve is provided, comprising:

[0070] The first valve plate 10 is a three-channel control valve, see Figure 1 ;

[0071] The second valve plate 20 is a three-channel control valve. Figure 2 The first valve plate 10 and the second valve plate 20 are relatively rotatably arranged in close contact with each other so that the channel connecting the two can be switched.

[0072] When the first valve plate 10 and the second valve plate 20 rotate relative to each other, the channel connecting the two can be switched, thereby enabling the pipeline switching of the water purification system in which it is installed, so that at least two reverse osmosis filter elements can be converted from parallel to series, thereby improving the water purification system's processing capacity for raw water, being able to cope with the significant deterioration of raw water quality, and ensuring the user's water safety.

[0073] The method of adjusting the state of the multi-channel control valve can be to drive the first valve plate 10 to rotate a certain angle by a stepper motor, or to manually rotate the first valve plate 10 a certain angle. Figure 1 The state changes to Figure 3 Status shown.

[0074] In some embodiments, the first valve plate 10 includes channel A, channel C, channel E and a first idle channel, and the second valve plate 20 includes channel B, channel D, channel F and a second idle channel; the first valve plate 10 and the second valve plate 20 have a first connected state and a second connected state, in which channel A is connected to channel B, channel C is connected to channel D, and channel E is connected to channel F; in the second connected state, channel A is connected to channel D, channel B is connected to channel E, channel C is connected to the second idle channel, and channel F is connected to the first idle channel.

[0075] In the first connected state, channel A is connected with channel B, channel C is connected with channel D, channel E is connected with channel F, the first reverse osmosis filter element 1 and the second reverse osmosis filter element 2 in the water purification system are in an associated connection state, and the two reverse osmosis filter elements respectively purify water; while in the second connected state, channel A is connected with channel D, channel B is connected with channel E, channel C is connected with the second idle channel, and channel F is connected with the first idle channel, the first reverse osmosis filter element 1 and the second reverse osmosis filter element 2 in the water purification system are in a series connection state, and the water passing through the first reverse osmosis filter element 1 is again purified by the second reverse osmosis filter element 2. Even if the raw water quality is extremely deteriorated, the raw water is purified through multiple filtrations to meet the drinking water quality requirements, thereby improving the purification system's ability to cope with a significant deterioration in the raw water quality, ensuring the quality of the purified water, improving the safety of drinking water, and improving the reliability of the water purification system.

[0076] In some embodiments, the first valve disc 10 is a movable valve, and the second valve disc 20 is a fixed valve; or, the first valve disc 10 is a fixed valve, and the second valve disc 20 is a movable valve.

[0077] One of the first valve plate 10 and the second valve plate 20 is a movable valve, and the other is a fixed valve. One of the two valve plates tightly attached to each other rotates relative to the other to achieve the change of the connecting channel. The structure is simple, the channel switching efficiency is high, and the switching reliability is high.

[0078] In some embodiments, the first valve disc 10 is a movable valve, and the first valve disc 10 is transmission-connected with a valve disc driving member; or, the second valve disc 20 is a movable valve, and the second valve disc 20 is transmission-connected with a valve disc driving member.

[0079] The movable valve rotates under the drive of the driving member connected to it, which is more convenient than manual adjustment and also convenient for intelligent control. The valve plate driving member is a motor, which is driven by a motor and is easy to control.

[0080] In a second aspect, the present invention further provides a water purification system having a raw water inlet 7, a purified water outlet 8 and a waste water outlet 9, the water purification system comprising:

[0081] Pumping device;

[0082] A first reverse osmosis filter element 1;

[0083] The second reverse osmosis filter element 2;

[0084] At least one multi-channel control valve is connected to the first reverse osmosis filter element 1 and the second reverse osmosis filter element 2 through a pipeline, and can control the first reverse osmosis filter element 1 and the second reverse osmosis filter element 2 to switch between a parallel state and a series state.

[0085] The water purification system includes the multi-channel control valve of the present invention, which can control the first reverse osmosis filter element 1 and the second reverse osmosis filter element 2 to switch between a parallel state and a series state. Under normal conditions, the first reverse osmosis filter element 1 and the second reverse osmosis filter element 2 work in parallel. When the water quality deteriorates significantly, the multi-channel control valve is used to switch the connection state of the first reverse osmosis filter element 1 and the second reverse osmosis filter element 2 to a series state, thereby increasing the water purification capacity of the water purification system, so that the pure water can still meet the drinking water quality requirements, thereby improving the ability of the purification system to cope with changes in raw water quality, ensuring the safety of the purified water quality, and improving the reliability of the water purification system.

[0086] In some embodiments, the water purification system further includes a wastewater valve assembly, which is disposed in a wastewater discharge pipeline connected to the wastewater outlet 9 .

[0087] A wastewater valve assembly is provided, and when wastewater needs to be discharged, the wastewater discharge pipeline can be connected to the wastewater outlet 9, which is convenient for operation.

[0088] In some embodiments, the waste valve assembly includes:

[0089] A first wastewater valve 3 is disposed between the first reverse osmosis filter element 1 and the wastewater outlet 9;

[0090] The second wastewater valve 4 is arranged between the second reverse osmosis filter element 2 and the wastewater outlet 9 .

[0091] Each reverse osmosis filter element is equipped with a corresponding wastewater valve, which can be controlled individually and has higher flexibility.

[0092] In an optional embodiment, the pumping device comprises:

[0093] The first water pump 5 is arranged between the raw water inlet 7 and the first reverse osmosis filter element 1;

[0094] The second water pump 6 is disposed between the raw water inlet 7 and the second reverse osmosis filter element 2 .

[0095] The pumping device for providing water circulation power for the water purification system includes a first water pump 5 for providing pumping power for the pipeline where the first reverse osmosis filter element 1 is located and a second water pump 6 for providing pumping power for the pipeline where the second reverse osmosis filter element 2 is located, so as to facilitate the first reverse osmosis filter element 1 and the second reverse osmosis filter element 2 to independently purify water in a parallel state. Moreover, using two water pumps can reduce the noise of the water purification system and improve the user experience compared with using a large water pump.

[0096] In some embodiments, the water purification system further comprises:

[0097] Control unit;

[0098] Water quality testing units are installed at 7 raw water inlets;

[0099] The valve plate driving member is used to drive the first valve plate 10 or the second valve plate 20 to rotate; the water quality detection unit, the valve plate driving member and the pumping device are respectively connected to the control unit.

[0100] A water quality detection unit is provided to monitor the raw water quality and provide feedback to the control unit, so as to adjust the connection status of the first reverse osmosis filter element 1 and the second reverse osmosis filter element 2 according to the change of water quality. When the water quality is normal, the two reverse osmosis filter elements are arranged in parallel. If the water quality deteriorates due to special circumstances such as raw water being polluted, the control unit can also promptly control the multi-channel control valve to switch the connecting pipeline, and transform the first reverse osmosis filter element 1 and the second reverse osmosis filter element 2 into a series state, thereby improving the water purification system's ability to respond to water quality changes, improving the reliability of the water purification system, and ensuring the safety of users' drinking water.

[0101] Specifically, the water quality detection unit includes a water quality detector. The water quality detector can be a water quality detector in the relevant technology. The main contents detected by the water quality detector include:

[0102] Physical and chemical indicators: including color, turbidity, odor and taste, visible substances, pH value, aluminum, arsenic, mercury, lead, cadmium, chromium, chloride, sulfate, cyanide, fluoride, nitrate, etc. These indicators reflect the physical and chemical properties of water, such as water hardness, pH value and possible harmful substances in water.

[0103] Microbial indicators: including total colony count, total coliform group, etc. These indicators are used to ensure the sanitation and safety of drinking water. Through testing, bacteria, viruses and other microorganisms in water sources can be discovered in time to prevent water pollution from causing harm to human health.

[0104] Toxicological evaluation: Testing and analysis of harmful substances that may be present in drinking water, such as heavy metals and organic matter, to assess their degree of harm to human health.

[0105] Organic matter detection: Detection and analysis of organic matter that may be present in drinking water to assess its potential harm to human health, including pesticide residues and industrial wastewater.

[0106] In addition to the above aspects, water quality detectors also include trace element detection, radioactive substance detection and other projects.

[0107] In a third aspect, the present invention further provides a water purification control method, which is applicable to the above-mentioned water purification system, and the water purification control method comprises the following steps:

[0108] Obtain the water quality index of raw water and compare it with the preset water quality index;

[0109] Determine whether the water quality exceeds the standard;

[0110] If the water quality exceeds the standard, the first reverse osmosis filter element 1 and the second reverse osmosis filter element 2 are controlled to switch from a parallel state to a series state.

[0111] The preset water quality index is the limit water quality index corresponding to the limit processing capacity of the water purification system when the first reverse osmosis filter element 1 and the second reverse osmosis filter element 2 are connected in parallel. At this time, the pure water quality at the water purification outlet 8 can just meet the drinking water standard, that is, if the raw water quality index exceeds this preset water quality index, the two reverse osmosis filter elements connected in parallel will not be able to meet the water purification requirements. By obtaining the water quality index of the raw water and comparing it with the preset water quality index, it is determined whether the water quality exceeds the standard. If it exceeds the standard, it is necessary to switch the connection state of the two reverse osmosis filter elements to a series state to improve the processing capacity of the water purification system.

[0112] As shown in the figure, a specific embodiment of the present invention provides a water purification system, wherein the multi-channel control valve of the water purification system includes a first valve plate 10 and a second valve plate 20. The three channels of the first valve plate 10 and the three channels of the second valve plate 20 can adjust the channels that are connected by adjusting the angle of the valve plate. The first valve plate 10 and the second valve plate 20 achieve sealing of different channels by tightly fitting.

[0113] The first valve disc 10 and the second valve disc 20 are preferably made of ceramic material.

[0114] The first valve disc 10 and the second valve disc 20 are tightly fitted together and then fixed by wrapping the outer part with a plastic member.

[0115] The second valve plate 20 and the three channels of the second valve plate 20 can be connected to the water channel interface in the water purification system. The first valve plate 10 has three channels A, C, and E, and the second valve plate 20 has three channels B, D, and F. In the water purification system. Channel A is connected to the pipeline interface between the raw water inlet and the first water pump 5, channel B is connected to the inlet of the second water pump 6, channel C is connected to the pipeline interface between the first wastewater valve 3 and the wastewater outlet 9, channel D is connected to the wastewater outlet 9 of the second RO filter element, channel E is connected to the pure water outlet of the first RO filter element, and channel F is connected to the interface on the second RO filter element and the pure water outlet pipeline.

[0116] Under normal municipal tap water conditions, when the multi-channel control valve is in the first state, channel A is connected to channel B, channel C is connected to channel D, channel E is connected to channel F, two RO filter elements are connected in parallel, the outlet water quality meets the requirements, and the outlet water flow rate is also large.

[0117] When the water quality of the water source deteriorates, adjust the multi-channel control valve to enter the second state, channel A is connected to channel D, channel E is connected to channel B, channel C and channel F are independent, and the two RO filter elements are connected in series, so that the water produced by the first RO filter element enters the second RO filter element for secondary filtration to ensure the safety of the outlet water quality.

[0118] The state of the multi-channel control valve is adjusted by driving the first valve plate 10 to rotate a certain angle by a stepping motor, or manually rotating the first valve plate 10 by a certain angle.

[0119] The present invention adjusts the operation mode of the water purification system by the conduction state of the multi-channel control valve to improve the water purification system's ability to cope with the impact caused by changes in raw water quality, thereby ensuring the safety of water quality discharged by users.

[0120] In some embodiments, the water purification control method comprises the following steps:

[0121] Obtain the water quality index of raw water and compare it with the preset water quality index;

[0122] Determine whether the water quality exceeds the standard;

[0123] If the water quality exceeds the standard, the first reverse osmosis filter element 1 and the second reverse osmosis filter element 2 are controlled to switch from a parallel state to a series state;

[0124] If the water quality is restored to meet the standard, the first reverse osmosis filter element 1 and the second reverse osmosis filter element 2 are controlled to switch from the series state to the associated state.

[0125] When the raw water quality is restored and it is determined that the preset water quality is met, the multi-channel water inlet valve can be controlled to return to its original state, and the first reverse osmosis filter element 1 and the second reverse osmosis filter element 2 are switched from the series state to the original associated state.

[0126] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A multi-channel control valve, It is characterized in that include: The first valve plate (10) is a three-channel control valve; The second valve plate (20) is a three-channel control valve; the first valve plate (10) and the second valve plate (20) are arranged to be relatively rotatable and close to each other, so that the channels communicating between the two can be switched.

2. The multi-channel control valve according to claim 1, It is characterized in that The first valve plate (10) includes a channel A, a channel C, a channel E and a first idle channel, and the second valve plate (20) includes a channel B, a channel D, a channel F and a second idle channel; the first valve plate (10) and the second valve plate (20) have a first connected state and a second connected state, in the first connected state, the channel A is connected to the channel B, the channel C is connected to the channel D, and the channel E is connected to the channel F; in the second connected state, the channel A is connected to the channel D, the channel B is connected to the channel E, the channel C is connected to the second idle channel, and the channel F is connected to the first idle channel.

3. The multi-channel control valve according to claim 1 or 2, It is characterized in that The first valve plate (10) is a movable valve, and the second valve plate (20) is a fixed valve; or the first valve plate (10) is a fixed valve, and the second valve plate (20) is a movable valve.

4. The multi-channel control valve according to claim 3, It is characterized in that The first valve disc (10) is a movable valve, and the first valve disc (10) is drivingly connected to a valve disc driving component; or the second valve disc (20) is a movable valve, and the second valve disc (20) is drivingly connected to a valve disc driving component.

5. A water purification system having a raw water inlet (7), a purified water outlet (8) and a waste water outlet (9), It is characterized in that The water purification system comprises: Pumping device; A first reverse osmosis filter element (1); A second reverse osmosis filter element (2); The multi-channel control valve according to any one of claims 1 to 4, wherein the multi-channel control valve is connected to the first reverse osmosis filter element (1) and the second reverse osmosis filter element (2) through a pipeline, and is capable of controlling the first reverse osmosis filter element (1) and the second reverse osmosis filter element (2) to switch between a parallel state and a series state.

6. The water purification system according to claim 5, It is characterized in that The water purification system further comprises a wastewater valve assembly, wherein the wastewater valve assembly is arranged in a wastewater discharge pipeline connected to the wastewater outlet (9).

7. The water purification system according to claim 6, It is characterized in that The wastewater valve assembly comprises: A first wastewater valve (3) is arranged between the first reverse osmosis filter element (1) and the wastewater outlet (9); The second wastewater valve (4) is arranged between the second reverse osmosis filter element (2) and the wastewater outlet (9).

8. The water purification system according to claim 5, It is characterized in that The pumping device comprises: A first water pump (5) is arranged between the raw water inlet (7) and the first reverse osmosis filter element (1); The second water pump (6) is arranged between the raw water inlet (7) and the second reverse osmosis filter element (2).

9. A water purification system according to any one of claims 5 to 8, It is characterized in that The water purification system also includes: Control unit; A water quality detection unit is arranged at the raw water inlet (7); The valve plate driving member is used to drive the first valve plate (10) or the second valve plate (20) to rotate; the water quality detection unit, the valve plate driving member and the pumping device are respectively connected to the control unit.

10. A water purification control method, applicable to the water purification system according to claim 9, It is characterized in that The water purification control method comprises the following steps: Obtain the water quality index of raw water and compare it with the preset water quality index; Determine whether the water quality exceeds the standard; If the water quality exceeds the standard, the first reverse osmosis filter element and the second reverse osmosis filter element are controlled to switch from a parallel state to a series state.

11. The water purification control method according to claim 10, It is characterized in that The following steps are also included: If the water quality is restored to meet the standard, the first reverse osmosis filter element and the second reverse osmosis filter element are controlled to switch from a series state to an associated state.

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