Water purification system, control method and control device thereof and storage medium

Abstract

The invention relates to the technical field of water purifiers, and discloses a water purification system, a control method thereof, a control device and a storage medium, the water purification system comprises: a first filter element having a first water inlet and a first pure water port, the first water inlet being connected with a water inlet pipeline; the second filter element is provided with a second water inlet and a second pure water port, and the second pure water port is communicated with the water producing port through a pure water pipeline; the switching valve comprises a first valve plate and a second valve plate which are oppositely arranged, one of the first valve plate and the second valve plate is rotatably arranged, the first valve plate is provided with a first channel and a second channel, the first channel is communicated with the water inlet pipeline, the second channel is communicated with the first pure water port, and the second valve plate is provided with a third channel and a fourth channel; the third channel is communicated with the second water inlet, and the fourth channel is communicated with a pure water pipeline; the switching valve has a first state and a second state, in the first state, the first channel is right opposite to the third channel, and the second channel is right opposite to the fourth channel. And in the second state, the second channel is opposite to the third channel.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water purifiers, in particular to a water purification system and a control method, a control device and a storage medium thereof. BACKGROUND

[0002] The water purifier removes pollutants in water, such as rust, colloidal substances, odor substances, residual chlorine and disinfection by-products, organic pollutants, heavy metals, etc., through deep treatment of tap water, so that the effluent can be directly drunk.

[0003] The related technology discloses a water purification system, comprising: a plurality of fine filter cartridges, the plurality of fine filter cartridges are connected between a water source and a water purification water supply end; a switching device switchable between a series connection state and a parallel connection state, the plurality of fine filter cartridges are respectively connected with the switching device, when the switching device is in the series connection state, the plurality of fine filter cartridges are connected in series, and when the switching device is in the parallel connection state, at least two of the plurality of fine filter cartridges are connected in parallel. The water purification system further comprises a water quality detection device for detecting the water quality of the water source, the switching device communicates with the water quality detection device to switch between the series connection state and the parallel connection state according to the detection value of the water quality detection device. The plurality of fine filter cartridges comprise: a first fine filter cartridge, the first fine filter cartridge has a first raw water inlet and a first purified water outlet; and a second fine filter cartridge, the second fine filter cartridge has a second raw water inlet and a second purified water outlet, wherein when the switching device is in the series connection state, the first raw water inlet is connected with the water source, the first purified water outlet is connected with the second raw water inlet, and the second purified water outlet is connected with the water purification water supply end; and when the switching device is in the parallel connection state, the first raw water inlet and the second raw water inlet are respectively connected with the water source, and the first purified water outlet and the second purified water outlet are respectively connected with the water purification water supply end. The switching device comprises: a series connection water pipe, the series connection water pipe is connected with the first purified water outlet and the second raw water inlet respectively, and a series connection on-off valve is arranged on the series connection water pipe; a first parallel connection water pipe, the first parallel connection water pipe is connected with the water source and the second raw water inlet respectively, and a first parallel connection on-off valve is arranged on the first parallel connection water pipe; and a second parallel connection water pipe, the second parallel connection water pipe is connected with the first purified water outlet and the water purification water supply end respectively, and a second parallel connection on-off valve is arranged on the second parallel connection water pipe, and the series connection on-off valve is located between the first parallel connection water pipe and the second parallel connection water pipe in the length direction of the series connection water pipe.

[0004] The related technology can realize the switching of the parallel connection and the series connection of the plurality of fine filter cartridges, but the structure of the switching device is complex. SUMMARY

[0005] Therefore, the present application provides a water purification system and a control method, a control device and a storage medium thereof to solve the problem of complex structure of a switching device in the prior art.

[0006] In a first aspect, the present application provides a water purification system, comprising:

[0007] a first filter element having a first water inlet and a first purified water outlet, the first water inlet being connected to a water inlet pipeline;

[0008] a second filter element having a second water inlet and a second purified water outlet, the second purified water outlet being connected to a water outlet through a purified water pipeline;

[0009] a switching valve including oppositely arranged first and second valve plates, one of the first and second valve plates being rotatably arranged, the first valve plate having a first channel and a second channel, the first channel being connected to the water inlet pipeline, and the second channel being connected to the first purified water outlet, the second valve plate having a third channel and a fourth channel, the third channel being connected to the second water inlet, and the fourth channel being connected to the purified water pipeline;

[0010] the switching valve having a first state and a second state, in the first state, the first channel is opposite to the third channel, and the second channel is opposite to the fourth channel, and in the second state, the second channel is opposite to the third channel.

[0011] Beneficial effects: when the switching valve is in the first state, the first channel is opposite to the third channel, and the second channel is opposite to the fourth channel, at this time, the water in the water inlet pipeline is divided into two paths, one path enters the first filter element for filtration, the purified water generated by the filtration flows to the purified water pipeline through the second channel and the fourth channel, and then flows to the water outlet through the purified water pipeline for use by a user, and the other path enters the second filter element for filtration through the first channel and the third channel, and the purified water generated by the filtration flows to the water outlet through the purified water pipeline for use by the user. Therefore, when the switching valve is in the first state, the first filter element and the second filter element are in a parallel state, and the first filter element and the second filter element simultaneously filter the water, at this time, the water flow of the water outlet is large.

[0012] When the switching valve is in the second state, the second channel is opposite to the third channel, at this time, the water in the water inlet pipeline enters the first filter element for filtration, the purified water generated by the filtration enters the second filter element for re-filtration through the second channel and the third channel, and the purified water generated by the filtration flows to the water outlet through the purified water pipeline for use by the user. At this time, the first filter element and the second filter element are in a series state, and can double-filter the water to improve the water quality of the water outlet.

[0013] The water purification system only needs to rotate the first valve plate or the second valve plate to realize the adjustment of the series connection and the parallel connection between the first filter element and the second filter element, and the switching valve has a simple structure and is easy to control.

[0014] In an optional embodiment, the first filter element further has a first waste water outlet, and the second filter element further has a second waste water outlet.

[0015] The first valve piece further has a fifth channel, and the second valve piece further has a sixth channel.

[0016] In the first state, the fifth channel is opposite to the sixth channel, and in the second state, the fourth channel is blocked by the first valve piece, the fifth channel is blocked by the second valve piece, and the sixth channel is opposite to the first channel.

[0017] Beneficial effects: when the switching valve is in the first state, the first channel is opposite to the third channel, the second channel is opposite to the fourth channel, and the fifth channel is opposite to the sixth channel. At this time, the water in the water inlet pipeline is divided into two routes. One route enters the first filter element for filtration, and the waste water generated by the filtration is discharged to the concentrated water outlet through the first waste water pipeline. The pure water generated by the filtration flows to the pure water pipeline through the second channel and the fourth channel, and then flows to the water production outlet through the pure water pipeline for use by the user. The other route enters the second filter element for filtration through the first channel and the third channel. The pure water generated by the filtration flows to the water production outlet through the pure water pipeline for use by the user, and the waste water generated by the filtration flows to the first waste water pipeline through the sixth channel and the fifth channel, and then is discharged to the concentrated water outlet.

[0018] When the switching valve is in the second state, the second channel is opposite to the third channel, the sixth channel is opposite to the first channel, the fourth channel is blocked by the first valve piece, and the fifth channel is blocked by the second valve piece. At this time, the water in the water inlet pipeline enters the first filter element for filtration, the waste water generated by the filtration is discharged to the concentrated water outlet through the first waste water pipeline, the pure water generated by the filtration enters the second filter element for re-filtration after passing through the second channel and the third channel, the pure water generated by the re-filtration flows to the water production outlet through the pure water pipeline for use by the user, and the waste water generated by the re-filtration flows to the first filter element again through the sixth channel and the first channel.

[0019] In addition, compared with the related art, when the switching valve is in the second state, the waste water generated by the filtration of the second filter element flows to the first filter element again through the sixth channel and the first channel for filtration, which can improve the utilization rate of water.

[0020] In an optional embodiment, the water purification system further comprises a driving structure for driving one of the first valve piece and the second valve piece to rotate.

[0021] Beneficial effects: the driving structure can reduce the amount of manual operation and facilitate control.

[0022] In an alternative embodiment, one of the first valve piece and the second valve piece is provided with a connecting portion, and the driving structure comprises a motor, a driving shaft of the motor being connected to the connecting portion.

[0023] Beneficial effects: the driving shaft of the motor is directly connected to the connecting portion, and the driving structure is relatively simple, facilitating control of the rotation angle of the first valve piece or the second valve piece.

[0024] In an alternative embodiment, the connecting portion is a slot.

[0025] Beneficial effects: the connecting portion is a slot, the driving shaft of the motor is inserted into the slot to realize connection with the first valve piece or the second valve piece, and the connection mode is simple.

[0026] In an alternative embodiment, the water inlet pipeline is provided with a water quality detection unit.

[0027] Beneficial effects: by providing the water quality detection unit on the water inlet pipeline, the water quality of the inlet water can be detected, facilitating control of the state of the switching valve.

[0028] In an alternative embodiment, the water purification system further comprises a controller, the controller being in communication connection with the water quality detection unit and the driving structure.

[0029] Beneficial effects: the controller is in communication connection with the water quality detection unit and the driving structure, the driving structure can be controlled according to the water quality detected by the water quality detection unit, automatic control of the switching of the first state and the second state of the switching valve can be realized, the influence of changes in the water quality of raw water on the water purification system can be improved, and the safety of the outlet water quality can be ensured.

[0030] In an alternative embodiment, the water inlet pipeline is provided with a first pump, and the first channel is in communication with a position on the water inlet pipeline upstream of the first pump.

[0031] And / or, the second water inlet is in communication with the third channel through a first connecting pipeline, and the first connecting pipeline is provided with a second pump.

[0032] Beneficial effects: by providing the first pump on the water inlet pipeline, the first pump can increase the water pressure when water is produced, so that water can enter the first filter element for filtration. The second pump can increase the water pressure, so that water can enter the second filter element for filtration.

[0033] In an alternative embodiment, the first wastewater pipeline is provided with a first wastewater valve.

[0034] And / or, the second water inlet is in communication with the third channel through a first connecting pipeline, and the first connecting pipeline is provided with a second pump.

[0035] Beneficial effects: the first wastewater valve can adjust the water inlet pressure of the first filter element, so that the first filter element can normally produce water; the second wastewater valve can adjust the water inlet pressure of the second filter element, so that the second filter element can normally produce water.

[0036] In a second aspect, the present application further provides a control method of a water purification system, which is applied to the water purification system, and the control method comprises:

[0037] obtaining a water quality parameter value of inlet water;

[0038] controlling the switching valve to switch to the first state or the second state according to the water quality parameter value of the inlet water.

[0039] Beneficial effects: according to the water quality parameter value of the inlet water, the switching valve is controlled to switch to the first state or the second state, so that the water purification system can cope with the influence caused by the change of the water quality of the inlet water, and the water quality of outlet water is ensured to be safe.

[0040] In an optional implementation, the water quality parameter value of the inlet water comprises a TDS value, and the controlling the switching valve to switch to the first state or the second state according to the water quality parameter value of the inlet water comprises:

[0041] if the TDS value is less than a preset value, controlling the switching valve to switch to the first state;

[0042] if the TDS value is greater than or equal to the preset value, controlling the switching valve to switch to the second state.

[0043] Beneficial effects: if the TDS value is less than the preset value, it indicates that the water quality of the inlet water is relatively good, and the switching valve is controlled to switch to the first state, so that the first filter element and the second filter element are connected in parallel, and have a high water production rate; if the TDS value is greater than or equal to the preset value, it indicates that the water quality of the inlet water is poor, and the switching valve is controlled to switch to the second state, so that the first filter element and the second filter element are connected in series, and the water can be double-filtered, and the water quality of the water outlet is improved.

[0044] In a third aspect, the present application further provides a control device of a water purification system, which is applied to the water purification system, and the control device comprises:

[0045] an obtaining module, configured to obtain a water quality parameter value of inlet water;

[0046] a control module, configured to control the switching valve to switch to the first state or the second state according to the water quality parameter value of the inlet water.

[0047] Beneficial effects: according to the water quality parameter value of the inlet water, the control module controls the switching valve to switch to the first state or the second state, so that the water purification system can cope with the influence caused by the change of the water quality of the inlet water, and the water quality of outlet water is ensured to be safe.

[0048] In a fourth aspect, the present application further provides a computer readable storage medium, wherein the computer readable storage medium has computer instructions stored thereon, and the computer instructions are used to make a computer execute the control method of the water purification system. BRIEF DESCRIPTION OF DRAWINGS

[0049] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings required to be used in the specific embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0050] Figure 1 FIG. 1 is a front view of a first valve plate in a water purification system according to an embodiment of the present application;

[0051] Figure 2 FIG. 2 is a front view of a second valve plate in a water purification system according to an embodiment of the present application;

[0052] Figure 3 FIG. 3 is a schematic view of a water purification system when a switching valve is in a first state according to an embodiment of the present application;

[0053] Figure 4 FIG. 4 is a schematic view of a water purification system when a switching valve is in a second state according to an embodiment of the present application;

[0054] Figure 5 FIG. 5 is a flow chart of a control method of a water purification system according to an embodiment of the present application.

[0055] BRIEF DESCRIPTION OF DRAWINGS

[0056] 1, first filter core; 2, second filter core; 3, water inlet pipeline; 4, water outlet; 5, pure water pipeline; 6, first valve plate; 601, slot; 7, second valve plate; A, first channel; E, second channel; B, third channel; F, fourth channel; C, fifth channel; D, sixth channel; 8, first waste water pipeline; 9, water quality detection unit; 10, first pump; 11, first connecting pipeline; 12, second pump; 13, first waste water valve; 14, second connecting pipeline; 15, second waste water valve; 16, concentrated water outlet. DETAILED DESCRIPTION

[0057] In order to make the purposes, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of the present application.

[0058] The related art discloses a water purification system, comprising: a plurality of fine filter cartridges, the plurality of fine filter cartridges are connected between a water source and a purified water supply end; a switching device switchable between a series connection state and a parallel connection state, the plurality of fine filter cartridges are respectively connected with the switching device, when the switching device is in the series connection state, the plurality of fine filter cartridges are connected in series, when the switching device is in the parallel connection state, at least two of the plurality of fine filter cartridges are connected in parallel. The water purification system further comprises a water quality detection device for detecting the water quality of the water source, the switching device communicates with the water quality detection device to switch between the series connection state and the parallel connection state according to the detection value of the water quality detection device. The plurality of fine filter cartridges comprise: a first fine filter cartridge, the first fine filter cartridge has a first raw water inlet and a first purified water outlet; a second fine filter cartridge, the second fine filter cartridge has a second raw water inlet and a second purified water outlet, wherein, when the switching device is in the series connection state, the first raw water inlet is connected with the water source, the first purified water outlet is connected with the second raw water inlet, and the second purified water outlet is connected with the purified water supply end; when the switching device is in the parallel connection state, the first raw water inlet and the second raw water inlet are respectively connected with the water source, and the first purified water outlet and the second purified water outlet are respectively connected with the purified water supply end. The switching device comprises: a series connection water pipe, the series connection water pipe is connected with the first purified water outlet and the second raw water inlet respectively, and a series connection on-off valve is arranged on the series connection water pipe; a first parallel connection water pipe, the first parallel connection water pipe is connected with the water source and the second raw water inlet respectively, and a first parallel connection on-off valve is arranged on the first parallel connection water pipe; a second parallel connection water pipe, the second parallel connection water pipe is connected with the first purified water outlet and the purified water supply end respectively, and a second parallel connection on-off valve is arranged on the second parallel connection water pipe, and the series connection on-off valve is located between the first parallel connection water pipe and the second parallel connection water pipe in the length direction of the series connection water pipe.

[0059] The above related art can realize the switching between the parallel connection and the series connection of the plurality of fine filter cartridges, but the structure of the switching device is complex.

[0060] In addition, in the series connection state, the waste water generated by the first fine filter cartridge and the second fine filter cartridge is discharged through the waste water direct discharge pipeline, and the water utilization rate is low.

[0061] Embodiments of the present application will be described below with reference to the drawings. Figures 1 to 5 , descriptions of embodiments of the present application.

[0062] According to an embodiment of the present application, in one aspect, a water purification system is provided, comprising: a first filter element 1, a second filter element 2, and a switching valve.

[0063] The first filter element 1 has a first water inlet and a first purified water outlet, and the first water inlet is connected to a water inlet pipeline 3. The second filter element 2 has a second water inlet and a second purified water outlet, and the second purified water outlet is connected to a water outlet 4 through a purified water pipeline 5. The switching valve includes oppositely arranged first and second valve plates 6 and 7, one of which is rotatably arranged. The first valve plate 6 has a first channel A and a second channel E, the first channel A is connected to the water inlet pipeline 3, and the second channel E is connected to the first purified water outlet. The second valve plate 7 has a third channel B and a fourth channel F, the third channel B is connected to the second water inlet, and the fourth channel F is connected to the purified water pipeline 5. The switching valve has a first state and a second state. In the first state, the first channel A is opposite to the third channel B, and the second channel E is opposite to the fourth channel F. In the second state, the second channel E is opposite to the third channel B.

[0064] In this embodiment, when the switching valve is in the first state, the first channel A is opposite to the third channel B, and the second channel E is opposite to the fourth channel F. At this time, the water in the water inlet pipeline 3 is divided into two paths, one of which enters the first filter element 1 for filtration, and the purified water generated by the filtration flows to the purified water pipeline 5 through the second channel E and the fourth channel F, and then flows to the water outlet 4 through the purified water pipeline 5 for use by the user. The other path enters the second filter element 2 for filtration through the first channel A and the third channel B, and the purified water generated by the filtration flows to the water outlet 4 through the purified water pipeline 5 for use by the user. Therefore, when the switching valve is in the first state, the first filter element 1 and the second filter element 2 are in a parallel state, and the first filter element 1 and the second filter element 2 simultaneously filter the water, at this time, the water flow of the water outlet 4 is large.

[0065] When the switching valve is in the second state, the second channel E is opposite to the third channel B, at this time, the water in the water inlet pipeline 3 enters the first filter element 1 for filtration, and the purified water generated by the filtration enters the second filter element 2 for re-filtration through the second channel E and the third channel B, and the purified water generated by the filtration flows to the water outlet 4 through the purified water pipeline 5 for use by the user. At this time, the first filter element 1 and the second filter element 2 are in a series state, and can perform double filtration on the water, thereby improving the water quality of the water outlet 4.

[0066] The water purification system only needs to rotate the first valve plate 6 or the second valve plate 7 to realize the adjustment of the series and parallel connection between the first filter element 1 and the second filter element 2, and the structure of the switching valve is simple and easy to control.

[0067] In one embodiment, the first filter element 1 further has a first waste water outlet, the first waste water outlet being communicated with the concentrated water outlet 16 through a first waste water pipeline 8, and the second filter element 2 further has a second waste water outlet; the first valve plate 6 further has a fifth channel C, the fifth channel C being communicated with the first waste water pipeline 8, and the second valve plate 7 further has a sixth channel D, the sixth channel D being communicated with the second waste water outlet; in the first state, the fifth channel C is opposite to the sixth channel D; in the second state, the fourth channel F is blocked by the first valve plate 6, the fifth channel C is blocked by the second valve plate 7, and the sixth channel D is opposite to the first channel A.

[0068] In this embodiment, when the switching valve is in the first state, the first channel A is opposite to the third channel B, the second channel E is opposite to the fourth channel F, and the fifth channel C is opposite to the sixth channel D. At this time, the water in the water inlet pipeline 3 is divided into two routes. One route enters the first filter element 1 for filtration, the waste water generated by the filtration is discharged to the concentrated water outlet 16 through the first waste water pipeline 8, and the pure water generated by the filtration flows to the pure water pipeline 5 through the second channel E and the fourth channel F, and then flows to the water outlet 4 through the pure water pipeline 5 for use by the user. The other route enters the second filter element 2 for filtration through the first channel A and the third channel B, the pure water generated by the filtration flows to the water outlet 4 through the pure water pipeline 5 for use by the user, and the waste water generated by the filtration flows to the first waste water pipeline 8 through the sixth channel D and the fifth channel C, and then is discharged to the concentrated water outlet 16.

[0069] When the switching valve is in the second state, the second channel E is opposite to the third channel B, the sixth channel D is opposite to the first channel A, the fourth channel F is blocked by the first valve plate 6, and the fifth channel C is blocked by the second valve plate 7. At this time, the water in the water inlet pipeline 3 enters the first filter element 1 for filtration, the waste water generated by the filtration is discharged to the concentrated water outlet 16 through the first waste water pipeline 8, and the pure water generated by the filtration enters the second filter element 2 for re-filtration through the second channel E and the third channel B, the pure water generated by the re-filtration flows to the water outlet 4 through the pure water pipeline 5 for use by the user, and the waste water generated by the re-filtration flows to the first filter element 1 again through the sixth channel D and the first channel A.

[0070] In addition, compared with the related art, when the switching valve is in the second state, the waste water generated by the filtration of the second filter element 2 flows to the first filter element 1 again through the sixth channel D and the first channel A for filtration, which can improve the utilization rate of water.

[0071] In one embodiment, the first filter element 1 and the second filter element 2 are both RO reverse osmosis filter elements.

[0072] In an alternative embodiment, the fifth channel C and the sixth channel D can not be provided, and when the switching valve is in the second state, the second channel E is blocked by the second valve plate 7 and the fourth channel F is blocked by the first valve plate 6. In this embodiment, the waste water generated by the first filter element 1 and the second filter element 2 can be discharged through the waste water direct discharge pipeline respectively. In this embodiment, when the switching valve is in the first state, the first channel A is opposite to the third channel B and the second channel E is opposite to the fourth channel F, and when it is required to connect the first filter element 1 and the second filter element 2 in series, the first valve plate 6 or the second valve plate 7 is rotated to move an angle, so that the second channel E is opposite to the third channel B, the second channel E is blocked by the second valve plate 7 and the fourth channel F is blocked by the first valve plate 6. It should be noted that in this embodiment, the center of the first channel A and the center of the second channel E cannot be located on the same radial, the line connecting the center of the first channel A and the center of the first valve plate 6 and the line connecting the center of the second channel E and the second valve plate 7 form an angle, and the angle is less than 180°, and the third channel B and the fourth channel F are provided on the second valve plate 7 in the same position as the first valve plate 6.

[0073] In an embodiment, the water purification system further comprises a driving structure for driving one of the first valve plate 6 and the second valve plate 7 to rotate.

[0074] In this embodiment, the driving structure can reduce the amount of manual operation and facilitate control.

[0075] In an alternative embodiment, the driving structure can not be provided, and the first state and the second state can be switched by manually rotating the first valve plate 6 or the second valve plate 7.

[0076] In an embodiment, one of the first valve plate 6 and the second valve plate 7 is provided with a connecting portion, and the driving structure comprises a motor, and a driving shaft of the motor is connected to the connecting portion.

[0077] In this embodiment, the driving shaft of the motor is directly connected to the connecting portion, and the driving structure is relatively simple and facilitates control of the rotation angle of the first valve plate 6 or the second valve plate 7.

[0078] In a specific embodiment, the motor is a stepping motor.

[0079] In other alternative embodiments, a gear can be provided on the edge of the first valve plate 6 or the second valve plate 7, and the driving structure comprises a gear set and a motor, and the first valve plate 6 or the second valve plate 7 is driven to rotate by the gear set.

[0080] In an embodiment, the connecting portion is a slot 601.

[0081] In this embodiment, the connecting portion is a slot 601, the driving shaft of the motor is inserted into the slot 601 to realize connection with the first valve plate 6 or the second valve plate 7, and the connection method is simple.

[0082] Specifically in one embodiment, the first valve plate 6 is provided with a slot 601, and a motor is used to drive the first valve plate 6 to rotate.

[0083] In one embodiment, the water inlet pipeline 3 is provided with a water quality detection unit 9.

[0084] In this embodiment, by providing the water quality detection unit 9 on the water inlet pipeline 3, the water quality of the inlet water can be detected, which facilitates the control of the switching valve state.

[0085] In one embodiment, the water purification system comprises a controller, which is in communication connection with the water quality detection unit 9 and the driving structure.

[0086] In this embodiment, the controller is in communication connection with the water quality detection unit 9 and the driving structure, and the driving structure can be controlled according to the water quality detected by the water quality detection unit 9, so as to automatically control the switching of the first state and the second state of the switching valve, which can improve the response of the water purification system to the influence caused by the change of the raw water quality and ensure the safety of the outlet water quality.

[0087] In one embodiment, the water inlet pipeline 3 is provided with a first pump 10, and the first channel A is in communication with a position on the water inlet pipeline 3 upstream of the first pump 10.

[0088] In this embodiment, by providing the first pump 10 on the water inlet pipeline 3, the water pressure can be increased by the first pump 10 when water is produced, so that the water can enter the first filter element 1 for filtration.

[0089] In one embodiment, the second water inlet is in communication with the third channel B through a first connecting pipeline 11, and the first connecting pipeline 11 is provided with a second pump 12.

[0090] In this embodiment, the second pump 12 can increase the water pressure so that the water can enter the second filter element 2 for filtration.

[0091] In one embodiment, the first waste water pipeline 8 is provided with a first waste water valve 13; and / or, the second waste water outlet is in communication with the sixth channel D through a second connecting pipeline 14, and the second connecting pipeline 14 is provided with a second waste water valve 15.

[0092] In this embodiment, the first waste water valve 13 can adjust the water inlet pressure of the first filter element 1 so that the first filter element 1 can normally produce water; and the second waste water valve 15 can adjust the water inlet pressure of the second filter element 2 so that the second filter element 2 can normally produce water.

[0093] According to the embodiments of the present application, in a second aspect, a control method of a water purification system is provided, which is applied to the above-mentioned water purification system, and the control method comprises:

[0094] obtaining a water quality parameter value of inlet water;

[0095] According to the water quality parameter value, the switching valve is controlled to switch to the first state or the second state.

[0096] In this embodiment, according to the water quality parameter value, the switching valve is controlled to switch to the first state or the second state, which can improve the response of the water purification system to the influence caused by the change of the water quality, and ensure the safety of the water quality.

[0097] Specifically, the first filter element 1 has a first water inlet and a first pure water outlet, and the first water inlet is connected with the water inlet pipeline 3; the second filter element 2 has a second water inlet and a second pure water outlet, and the second pure water outlet is connected with the water outlet 4 through the pure water pipeline 5; the switching valve includes oppositely arranged first and second valve plates 6 and 7, one of which is rotatably arranged, the first valve plate 6 has a first channel A and a second channel E, the first channel A is in communication with the water inlet pipeline 3, and the second channel E is in communication with the first pure water outlet, the second valve plate 7 has a third channel B and a fourth channel F, the third channel B is in communication with the second water inlet, and the fourth channel F is in communication with the pure water pipeline 5. When the switching valve is in the first state, the first channel A is opposite to the third channel B, and the second channel E is opposite to the fourth channel F; at this time, the water in the water inlet pipeline 3 is divided into two paths, one of which enters the first filter element 1 for filtration, and the pure water generated by the filtration flows to the pure water pipeline 5 through the second channel E and the fourth channel F, and then flows to the water outlet 4 through the pure water pipeline 5 for use by the user; the other path enters the second filter element 2 for filtration through the first channel A and the third channel B, and the pure water generated by the filtration flows to the water outlet 4 through the pure water pipeline 5 for use by the user. Therefore, when the switching valve is in the first state, the first filter element 1 and the second filter element 2 are in a parallel state, and the first filter element 1 and the second filter element 2 filter the water at the same time, at this time, the water flow of the water outlet 4 is large. When the switching valve is in the second state, the second channel E is opposite to the third channel B, at this time, the water in the water inlet pipeline 3 enters the first filter element 1 for filtration, and the pure water generated by the filtration enters the second filter element 2 for re-filtration through the second channel E and the third channel B, and the pure water generated by the filtration flows to the water outlet 4 through the pure water pipeline 5 for use by the user. At this time, the first filter element 1 and the second filter element 2 are in a series state, and can double-filter the water to improve the water quality of the water outlet 4.

[0098] Specifically, in one embodiment, the water purification system further includes a driving structure for driving one of the first valve plate 6 and the second valve plate 7 to rotate, and the switching of the first state and the second state of the switching valve is realized by controlling the driving structure to work.

[0099] Specifically in one embodiment, the first filter element 1 further has a first waste water outlet, the first waste water outlet is communicated with the concentrated water outlet 16 through the first waste water pipeline 8, and the second filter element 2 further has a second waste water outlet; the first valve piece 6 further has a fifth channel C, the fifth channel C is communicated with the first waste water pipeline 8, and the second valve piece 7 further has a sixth channel D, the sixth channel D is communicated with the second waste water outlet; in the first state, the fifth channel C is opposite to the sixth channel D; in the second state, the fourth channel F is blocked by the first valve piece 6, the fifth channel C is blocked by the second valve piece 7, and the sixth channel D is opposite to the first channel A. When the switching valve is in the first state, the first channel A is opposite to the third channel B, the second channel E is opposite to the fourth channel F, and the fifth channel C is opposite to the sixth channel D. At this time, the water in the water inlet pipeline 3 is divided into two routes, one of which enters the first filter element 1 for filtration, the waste water generated by the filtration is discharged to the concentrated water outlet 16 through the first waste water pipeline 8, and the pure water generated by the filtration flows to the pure water pipeline 5 after passing through the second channel E and the fourth channel F, and then flows to the water outlet 4 through the pure water pipeline 5 for use by the user; the other route enters the second filter element 2 for filtration after passing through the first channel A and the third channel B, the pure water generated flows to the water outlet 4 through the pure water pipeline 5 for use by the user, and the waste water generated flows to the first waste water pipeline 8 after passing through the sixth channel D and the fifth channel C, and then is discharged to the concentrated water outlet 16 through the first waste water pipeline 8. When the switching valve is in the second state, the second channel E is opposite to the third channel B, the sixth channel D is opposite to the first channel A, the fourth channel F is blocked by the first valve piece 6, and the fifth channel C is blocked by the second valve piece 7. At this time, the water in the water inlet pipeline 3 enters the first filter element 1 for filtration, the waste water generated by the filtration is discharged to the concentrated water outlet 16 through the first waste water pipeline 8, and the pure water generated by the filtration enters the second filter element 2 for re-filtration after passing through the second channel E and the third channel B, the pure water generated by the filtration flows to the water outlet 4 through the pure water pipeline 5 for use by the user, and the waste water generated flows to the first filter element 1 again after passing through the sixth channel D and the first channel A.

[0100] In one embodiment, the water inlet quality parameter value includes a TDS value, and the control of the switching valve to switch to the first state or the second state according to the water inlet quality parameter value includes:

[0101] If the TDS value is less than a preset value, the switching valve is controlled to switch to the first state;

[0102] If the TDS value is greater than or equal to the preset value, the switching valve is controlled to switch to the second state.

[0103] In this embodiment, if the TDS value is less than the preset value, it indicates that the water inlet quality is relatively good, and the switching valve is controlled to switch to the first state, at this time, the first filter element 1 and the second filter element 2 are connected in parallel, and have a relatively high water production rate; if the TDS value is greater than or equal to the preset value, it indicates that the water inlet quality is poor, and the switching valve is controlled to switch to the second state, at this time, the first filter element 1 and the second filter element 2 are connected in series, and can double-filter the water, thereby improving the water quality of the water outlet 4.

[0104] A control device of a water purification system is also provided in the embodiment, which is used to implement the above-mentioned embodiments and will not be described again. As used below, the term "module" can be a combination of software and / or hardware that implements a predetermined function. Although the device described in the following embodiments is preferably implemented in software, implementation of hardware, or a combination of software and hardware, is also possible and contemplated.

[0105] In a third aspect, the embodiment provides a control device of a water purification system, which is applied to the water purification system provided in the above-mentioned embodiments, and the control device comprises:

[0106] The acquisition module is configured to acquire a water quality parameter value of the incoming water.

[0107] The control module is configured to control the switching valve to switch to the first state or the second state according to the water quality parameter value of the incoming water.

[0108] In this embodiment, the control module controls the switching valve to switch to the first state or the second state according to the water quality parameter value of the incoming water, which can improve the response of the water purification system to the influence caused by the change of the water quality of the incoming water and ensure the safety of the water quality of the outgoing water.

[0109] Specifically, in one embodiment, the water quality parameter value of the incoming water comprises a TDS value, and the control module is specifically configured to control the switching valve to switch to the first state when the TDS value is less than a preset value and to switch to the second state when the TDS value is greater than or equal to the preset value.

[0110] In this embodiment, if the TDS value is less than the preset value, it indicates that the water quality of the incoming water is relatively good, and the control module controls the switching valve to switch to the first state, at which time the first filter element 1 and the second filter element 2 are connected in parallel and have a relatively high water production rate; if the TDS value is greater than or equal to the preset value, it indicates that the water quality of the incoming water is poor, and the control module controls the switching valve to switch to the second state, at which time the first filter element 1 and the second filter element 2 are connected in series and can double-filter the water to improve the water quality of the water outlet 4.

[0111] The control device in the embodiment is presented in the form of a functional unit, and the unit herein refers to an ASIC (Application Specific Integrated Circuit) circuit, a processor and a memory that execute one or more software or fixed programs, and / or other devices that can provide the above-mentioned functions.

[0112] The embodiments of the present application further provide a computer readable storage medium, and the method according to the embodiments of the present application can be implemented in hardware, firmware, or recorded in a storage medium, or be implemented as computer codes stored in a remote storage medium or a non-transitory machine readable storage medium and downloaded through a network and stored in a local storage medium, so that the method described herein can be processed by such software on a storage medium using a general purpose computer, a special purpose processor, or programmable or special hardware. The storage medium can be a magnetic disk, an optical disk, a read-only memory, a random access memory, a flash memory, a hard disk, or a solid state disk, etc. Further, the storage medium can also include a combination of the above-mentioned types of memories. It can be understood that the computer, the processor, the microprocessor controller, or the programmable hardware includes a storage component that can store or receive software or computer codes, when the software or computer codes are accessed and executed by the computer, the processor, or the hardware, the method shown in the above embodiments is implemented.

[0113] Although the embodiments of the present application are described in conjunction with the accompanying drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope defined by the present application.

Claims

1. A water purification system, characterized in that, include: The first filter element (1) has a first water inlet and a first pure water outlet, and the first water inlet is connected to the water inlet pipe (3); The second filter element (2) has a second water inlet and a second pure water outlet, and the second pure water outlet is connected to the water production outlet (4) through a pure water pipeline (5). The switching valve includes a first valve plate (6) and a second valve plate (7) arranged opposite to each other. One of the first valve plate (6) and the second valve plate (7) is rotatably arranged. The first valve plate (6) has a first channel (A) and a second channel (E). The first channel (A) is connected to the water inlet pipe (3), and the second channel (E) is connected to the first pure water port. The second valve plate (7) has a third channel (B) and a fourth channel (F). The third channel (B) is connected to the second water inlet, and the fourth channel (F) is connected to the pure water pipe (5). The switching valve has a first state and a second state. In the first state, the first channel (A) is directly opposite the third channel (B), and the second channel (E) is directly opposite the fourth channel (F). In the second state, the second channel (E) is directly opposite the third channel (B).

2. The water purification system according to claim 1, characterized in that, The first filter element (1) also has a first wastewater outlet, which is connected to the concentrate outlet (16) through a first wastewater pipeline (8). The second filter element (2) also has a second wastewater outlet. The first valve plate (6) also has a fifth channel (C), which is connected to the first wastewater pipeline (8), and the second valve plate (7) also has a sixth channel (D), which is connected to the second wastewater outlet; In the first state, the fifth channel (C) is directly opposite the sixth channel (D); in the second state, the fourth channel (F) is blocked by the first valve plate (6), the fifth channel (C) is blocked by the second valve plate (7), and the sixth channel (D) is directly opposite the first channel (A).

3. The water purification system according to claim 2, characterized in that, The water purification system also includes a drive structure for driving one of the first valve plate (6) and the second valve plate (7) to rotate.

4. The water purification system according to claim 3, characterized in that, One of the first valve plate (6) and the second valve plate (7) is provided with a connecting part, and the driving structure includes a motor, the drive shaft of the motor being connected to the connecting part.

5. The water purification system according to claim 4, characterized in that, The connecting part is a slot (601).

6. The water purification system according to any one of claims 3 to 5, characterized in that, The water inlet pipe (3) is equipped with a water quality detection unit (9).

7. The water purification system according to claim 6, characterized in that, The water purification system also includes a controller, which is communicatively connected to the water quality detection unit (9) and the drive structure.

8. The water purification system according to any one of claims 1 to 5, characterized in that, The water inlet pipe (3) is equipped with a first pump (10), and the first channel (A) is connected to the position on the water inlet pipe (3) located upstream of the first pump (10); And / or, the second inlet is connected to the third channel (B) via a first connecting pipe (11), the first connecting pipe (11) being equipped with a second pump (12).

9. The water purification system according to any one of claims 2 to 5, characterized in that, The first wastewater pipeline (8) is equipped with a first wastewater valve (13); And / or, the second wastewater outlet is connected to the sixth channel (D) via a second connecting pipe (14), and the second connecting pipe (14) is provided with a second wastewater valve (15).

10. A control method for a water purification system, applied to the water purification system according to any one of claims 1 to 9, characterized in that, The control method includes: Obtain the influent water quality parameter values; Based on the influent water quality parameters, control the switching valve to switch to either the first or second state.

11. The control method for the water purification system according to claim 10, characterized in that, The influent water quality parameter values ​​include TDS values, and controlling the switching valve to switch to the first state or the second state based on the influent water quality parameter values ​​includes: If the TDS value is less than the preset value, the control switching valve switches to the first state; If the TDS value is greater than or equal to the preset value, the control switching valve is switched to the second state.

12. A control device for a water purification system, applied to the water purification system according to any one of claims 1 to 9, characterized in that, The control device includes: The acquisition module is used to acquire the influent water quality parameter values; The control module is used to control the switching valve to switch to the first state or the second state according to the influent water quality parameter value.

13. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions for causing a computer to perform the control method of the water purification system according to any one of claims 10 to 11.

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