Control valve, water treatment apparatus, and control method thereof

Abstract

The application discloses a control valve, a water treatment device and a control method thereof, and belongs to the technical field of water treatment. The control valve is provided with a first main valve position and a second valve position. When the first piston moves to the first main valve position and the second piston moves to the second valve position, the corresponding channels are opened, so that water from a water inlet flow channel is divided into three paths. The first path flows through a side flow channel, is treated, and then flows into a water outlet flow channel from a middle flow channel to maintain water supply. The second path enters a mixed water inlet from a mixed water flow channel and flows to a salt suction inlet. The third path enters a jet water flow channel from a siphon water flow channel, enters the salt suction inlet through a jet inlet, and the second path and the third path can be combined at the salt suction inlet. The regenerated liquid from the salt suction flow channel flows out of a salt tank to supplement the regenerated liquid. In this way, water can be injected into the salt tank while water treatment is performed, one special water injection valve position is reduced, the flux can reach a maximum value in a short time, and the waiting time for maximum water consumption is reduced.

Description

Technical Field

[0001] This application belongs to the field of water treatment technology, specifically relating to a control valve, water treatment equipment and control method thereof. Background Technology

[0002] Descaling and filtration control valves are common equipment in the water treatment industry, widely used in both industrial and household applications. Currently, most descaling and filtration control valves on the market have a coaxial connection between the main piston and the shut-off valve control piston, moving synchronously upon receiving an operation. Some valves separate the main piston and shut-off valve piston, but the two pistons are driven simultaneously by an inherent linkage mechanism, making separate control of the two pistons impossible. This results in the shut-off valve piston opening during the movement of the main piston, causing overfilling of the container connected to the brine suction channel; furthermore, the movement can also draw regeneration media into the tank. Summary of the Invention

[0003] Purpose of the invention: This application provides a control valve to solve the technical problem that the interconnection between the main valve and the shut-off valve of the existing control valve may lead to excessive water injection or the suction of regeneration medium into the tank; another purpose of this application is to provide a water treatment device; a third purpose of this application is to provide a control method for the above-mentioned water treatment device.

[0004] Technical solution: A control valve according to an embodiment of this application includes a main valve and a shut-off valve;

[0005] The main valve includes:

[0006] The first valve body has a first inner cavity and multiple main valve channels communicating with the first inner cavity;

[0007] A first piston is disposed in the first inner cavity. The first piston is used to move in the first inner cavity to switch the main valve position of the main valve, thereby opening or closing the passage between each of the main valve flow channels in the first inner cavity.

[0008] The shut-off valve includes:

[0009] The second valve body is connected to the first valve body. The second valve body is provided with a second inner cavity and a plurality of shut-off valve flow channels communicating with the second inner cavity.

[0010] The second piston is disposed in the second inner cavity. The second piston is used to move in the second inner cavity to switch the valve position of the shut-off valve, thereby opening or closing the passage between each shut-off valve flow channel in the second inner cavity.

[0011] The first piston and the second piston are arranged independently so that the first piston and the second piston can move independently of each other.

[0012] In some embodiments, the shut-off valve includes a brine suction connector, and the plurality of shut-off valve passages include a brine suction passage communicating with the brine suction connector;

[0013] The shut-off valve has a first valve position. When the second piston moves to the first valve position, the passage between the salt suction channel and the other shut-off valve channels is closed, so that the salt suction connector is closed.

[0014] In some embodiments, the plurality of shut-off valve channels include a salt path channel, a siphon water channel, and a jet water channel;

[0015] The shut-off valve has a first valve position. When the second piston moves to the first valve position, the passage between the salt passage, the siphon water passage, and the jet water passage is closed.

[0016] In some embodiments, the plurality of main valve channels include an inlet channel;

[0017] The main valve has a second main valve position. When the first piston moves to the second main valve position, the passage between the water inlet channel and other main valve channels is closed.

[0018] In some embodiments, the shut-off valve includes a siphon device;

[0019] The shut-off valve has a second valve position. When the second piston moves to the second valve position, the passage between the jet water channel and the siphon water channel is open, the passage between the salt channel and the brine suction channel is open, and the jet water channel and the salt channel are interconnected through the siphon device.

[0020] The plurality of main valve channels include an inlet channel, and the siphon water channel is connected to the inlet channel.

[0021] In some embodiments, the plurality of main valve channels further include an outlet channel, an intermediate channel, and a connected side channel and a mixing channel;

[0022] The main valve has a first main valve position. When the first piston moves to the first main valve position, the passage between the inlet channel, the mixing channel and the side channel is open, and the passage between the middle channel and the outlet channel is open.

[0023] The mixing water channel is connected to the salt channel via the siphon device.

[0024] In some embodiments, the siphon device is disposed within the second valve body, and the siphon device includes a jet port, a brine inlet, and a mixing port that are interconnected; the jet water channel is connected between the jet port and the second inner cavity, the brine channel is connected between the brine inlet and the second inner cavity, and the mixing water channel is connected between the mixing port and the first inner cavity;

[0025] When the second piston moves to the second valve position, the passage between the brine suction channel and the brine path channel is open, and the passage between the siphon water channel and the jet water channel is open.

[0026] In some embodiments, the plurality of main valve channels further include a drain channel, wherein when the first piston moves to the first main valve position, the passage between the drain channel and the other main valve channels is closed.

[0027] In some embodiments, the plurality of main valve channels further include a backwash channel; when the first piston moves to the first main valve position, the passage between the backwash channel and the other main valve channels is closed.

[0028] In some embodiments, the main valve further has a third main valve position. When the first piston moves to the third main valve position, the passage between the inlet channel and the backwash channel is open, the passage between the mixing channel, the sewage channel and the side channel is open, the passage between the outlet channel and other main valve channels is closed, and the passage between the intermediate channel and other main valve channels is closed.

[0029] In some embodiments, the first piston is provided with a first water passage groove around its axis. When the first piston moves to the first main valve position, the inlet water passage, the mixing water passage, and the side passage are connected through the first water passage groove. When the first piston moves to the third main valve position, the inlet water passage and the backwash passage are connected through the first water passage groove.

[0030] In some embodiments, the first piston has a valve core channel extending axially inside it, and when the first piston moves to the second main valve position, the intermediate flow channel and the sewage flow channel are connected through the valve core channel.

[0031] In some embodiments, the second piston is provided with a second water passage around its axis, and when the second piston moves to the second valve position, the siphon water passage and the jet water passage are connected through the second water passage.

[0032] In some embodiments, the axis of the first piston and the axis of the second piston are perpendicular to each other.

[0033] In some embodiments, the plurality of main valve channels include an inlet channel, an outlet channel, an intermediate channel, and a connected side channel and a mixing channel;

[0034] The main valve has a first main valve position. When the first piston moves to the first main valve position, the passage between the inlet channel, the mixing channel, and the side channel is open, and the passage between the middle channel and the outlet channel is open.

[0035] In some embodiments, the plurality of shut-off valve channels include a brine suction channel, a brine path channel, a siphon water suction channel, and a jet water channel, wherein the siphon water suction channel is connected to the inlet water channel;

[0036] The shut-off valve further includes a siphon device disposed within the second valve body. The siphon device includes a jet port, a brine inlet, and a mixing port that are interconnected. The jet water channel is connected between the jet port and the second inner cavity, the brine channel is connected between the brine inlet and the second inner cavity, and the mixing water channel is connected between the mixing port and the first inner cavity.

[0037] The shut-off valve has a second valve position. When the second piston moves to the second valve position, the passage between the brine suction channel and the brine path channel is open, and the passage between the siphon water channel and the jet water channel is open.

[0038] In some embodiments, the main valve further includes a second main valve position, wherein when the first piston moves to the second main valve position, the passage between the intermediate flow channel and the sewage flow channel is in an open state.

[0039] In some embodiments, the plurality of main valve channels further include a backwash channel; when the first piston moves to the first main valve position or the second main valve position, the passage between the backwash channel and the other main valve channels is closed.

[0040] exist

[0041] In some embodiments, the shut-off valve further includes a first valve position, wherein when the second piston moves to the first valve position, the passage between each shut-off valve flow channel is in a closed state.

[0042] In some embodiments, the main valve further includes:

[0043] The main valve sealing plug is disposed between the first piston and the side wall of the first inner cavity. The main valve sealing plug includes a plurality of first sealing grids spaced apart along the axial direction of the first piston. The main valve flow channel is located between adjacent first sealing grids.

[0044] In some embodiments, the shut-off valve further includes:

[0045] The shut-off valve sealing plug is disposed between the second piston and the side wall of the second inner cavity. The shut-off valve sealing plug includes a plurality of second sealing grids spaced apart along the axial direction of the second piston. The shut-off valve flow channel is located between adjacent second sealing grids.

[0046] In some embodiments, the main valve includes a first driving device disposed on the first valve body, the first driving device being used to drive the first piston to move;

[0047] The shut-off valve includes a second drive device, which is disposed on the second valve body and is used to drive the second piston to move.

[0048] In some embodiments, the first valve body and the second valve body are an integral structure.

[0049] Accordingly, the water treatment equipment described in this application embodiment includes:

[0050] The control valve described in any of the above embodiments, and,

[0051] A treatment tank includes a tank body and a central tube, the tank body having a receiving cavity for containing water treatment materials, and the central tube being inserted into the receiving cavity;

[0052] The processing tank is connected to the control valve, the receiving cavity is connected to the side flow channel, and the central pipe is connected to the middle flow channel and the backwash flow channel.

[0053] In some embodiments, the processing tank further includes a disperser disposed within the receiving cavity and connected to one end of the central tube away from the intermediate flow channel.

[0054] In some embodiments, the water treatment equipment further includes a salt tank that is connected to a brine suction channel.

[0055] Accordingly, the control method for the above-mentioned water treatment equipment described in the embodiments of this application includes:

[0056] Move the second piston to the second valve position and move the first piston to the first main valve position to replenish the regenerant to the salt tank;

[0057] Move the second piston to the second valve position and move the first piston to the second main valve position to draw salt from the salt tank;

[0058] Move the second piston to the first valve position and move the first piston to the first main valve position to treat water through the treatment tank;

[0059] Move the second piston to the first valve position, and move the first piston to the third main valve position to backfill the treatment tank;

[0060] Move the second piston to the first valve position, and move the first piston to the second main valve position to shut off the water inlet passage.

[0061] Beneficial effects: Compared with the prior art, the control valve of this application embodiment includes a main valve and a shut-off valve; the main valve includes a first valve body, which has a first inner cavity and a plurality of main valve flow channels communicating with the first inner cavity; a first piston is disposed in the first inner cavity, and the first piston is used to move in the first inner cavity to switch the main valve position of the main valve, thereby opening or closing the passage between each main valve flow channel in the first inner cavity; the shut-off valve includes: a second valve body connected to the first valve body, which has a second inner cavity and a plurality of shut-off valve flow channels communicating with the second inner cavity; a second piston is disposed in the second inner cavity, and the second piston is used to move in the second inner cavity to switch the shut-off valve position of the shut-off valve, thereby opening or closing the passage between each shut-off valve flow channel in the second inner cavity; the first piston and the second piston are disposed independently of each other, so that the first piston and the second piston can move independently of each other. This control valve sets the first piston of the main valve and the second piston of the shut-off valve on different valve bodies. The two pistons move independently in their respective internal cavities to switch valve positions independently, and there is no linkage between them. This can effectively avoid the phenomenon of pistons following each other when moving, and thus avoid the situation of excessive water injection or the sucking of regeneration medium into the tank as in the prior art.

[0062] Compared with the prior art, the water treatment equipment of this application embodiment includes: a control valve of any of the above embodiments, and a treatment tank, including a tank body and a central pipe. The tank body is provided with a receiving cavity for containing water treatment materials, and the central pipe is inserted into the receiving cavity. The treatment tank is connected to the control valve, the receiving cavity is connected to a side flow channel, and the central pipe is connected to a central flow channel. It is understood that this water treatment equipment may include all the technical features and beneficial effects of the above-described control valve, which will not be repeated here.

[0063] Compared with the prior art, the control method of the water treatment equipment in the embodiments of this application can include all the technical features and beneficial effects of the water treatment equipment described above, which will not be repeated here. Attached Figure Description

[0064] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0065] Figure 1 This is a three-dimensional structural schematic diagram of the control valve according to an embodiment of this application;

[0066] Figure 2 This is a schematic diagram of the main structure of the control valve according to an embodiment of this application;

[0067] Figure 3 yes Figure 2 Right view of the control valve structure;

[0068] Figure 4 This is a three-dimensional structural diagram of the second valve body in the control valve of this application embodiment;

[0069] Figure 5 This is a schematic diagram of the main structure of the second valve body in the control valve of this application embodiment;

[0070] Figure 6 yes Figure 5 A bottom view of the second valve body;

[0071] Figure 7 yes Figure 6 A schematic diagram of the cross-sectional structure of the second valve body along line AA';

[0072] Figure 8 This is a three-dimensional structural schematic diagram of the second valve body in the control valve of this application, viewed from another angle.

[0073] Figure 9 This is a three-dimensional structural diagram of the first valve body in the control valve of this application embodiment;

[0074] Figure 10 This is a top view of the first valve body in the control valve of this application embodiment;

[0075] Figure 11 yes Figure 10 A schematic diagram of the cross-sectional structure of the first valve body along line BB';

[0076] Figure 12This is a three-dimensional structural schematic diagram of the main valve sealing plug in the control valve according to an embodiment of this application;

[0077] Figure 13 This is a cross-sectional structural diagram of the main valve sealing plug installed in the first inner cavity in the control valve of this application embodiment;

[0078] Figure 14 This is a schematic diagram of the main structure of the first piston in the control valve according to an embodiment of this application;

[0079] Figure 15 This is a three-dimensional structural schematic diagram of the first piston in the control valve according to an embodiment of this application;

[0080] Figure 16 This is a three-dimensional structural schematic diagram of the first piston in the control valve of an embodiment of this application, viewed from another angle.

[0081] Figure 17 This is a three-dimensional structural schematic diagram of the shut-off valve sealing plug in the control valve of this application embodiment;

[0082] Figure 18 This is a three-dimensional structural schematic diagram of the second piston in the control valve according to an embodiment of this application;

[0083] Figure 19 This is a three-dimensional structural schematic diagram of the siphon device in the control valve according to an embodiment of this application;

[0084] Figure 20 This is a schematic diagram of the main structure of the water treatment equipment according to an embodiment of this application;

[0085] Figure 21 This is a schematic diagram of the second valve position of the shut-off valve in the water treatment equipment of this application embodiment;

[0086] Figure 22 This is a schematic diagram of the first valve position of the shut-off valve in the water treatment equipment of this application embodiment;

[0087] Figure 23 This is a schematic diagram showing the state of the first main valve position in the water treatment equipment of this application embodiment;

[0088] Figure 24 This is a schematic diagram showing the state of the second main valve position in the water treatment equipment of this application embodiment;

[0089] Figure 25 This is a schematic diagram showing the state of the third main valve position in the water treatment equipment of this application embodiment;

[0090] Figure 26 This is a schematic diagram of the water flow state when the valve is closed in the working position of the water treatment device according to an embodiment of this application;

[0091] Figure 27 This is a schematic diagram of the water flow state of the main valve of the water treatment device in the working position according to an embodiment of this application;

[0092] Figure 28 This is a schematic diagram of the water flow state when the valve is closed in the brine level of the water treatment device according to an embodiment of this application;

[0093] Figure 29 This is a schematic diagram of the water flow state of the main valve of the water treatment device in the brine suction position according to an embodiment of this application;

[0094] Figure 30 This is a schematic diagram of the water flow state when the valve is closed in the backwash position of the water treatment equipment according to an embodiment of this application;

[0095] Figure 31 This is a schematic diagram of the water flow state of the main valve in the backwash position of the water treatment equipment according to an embodiment of this application;

[0096] Figure 32 This is a schematic diagram of the water flow state when the valve is closed during the replenishment of the water treatment equipment according to an embodiment of this application;

[0097] Figure 33 This is a schematic diagram of the water flow state of the main valve of the water treatment equipment in this application embodiment when the liquid level is replenished;

[0098] Figure 34 This is a schematic diagram of the water flow state when the valve is closed in the water treatment device of this application embodiment is in the inlet closed position;

[0099] Figure 35 This is a schematic diagram of the water flow state of the main valve of the water treatment device in the embodiment of this application when the inlet is closed;

[0100] Reference numerals: 10-Main valve; 100-First valve body; 101-Inlet connector; 102-Outlet connector; 103-Intermediate flow channel; 104-First inner cavity; 105-Drainage flow channel; 106-Mixed water flow channel; 107-Inlet flow channel; 108-Outlet flow channel; 109-Side flow channel; 110-Backwash flow channel; 120-First piston; 121-First water passage; 122-Valve core channel; 130-Main valve sealing plug; 131-First sealing grille; 140-First drive device; 141-First end plug; 150-Connecting flange; 20-Shut-off valve; 200-Second valve body; 201-Drainage connector Head; 202-Salt suction connector; 203-Second inner cavity; 204-Siphon installation cavity; 205-Jet water flow channel; 206-Siphon water suction flow channel; 207-Salt path flow channel; 208-Salt suction flow channel; 210-Second piston; 211-Second water passage; 220-Second drive device; 221-Second end plug; 230-Siphon device; 231-Jet nozzle; 232-Salt suction port; 233-Mixing water port; 240-Shut-off valve sealing plug; 241-Second sealing grid; 30-Treatment tank; 310-Tank body; 311-Receiving cavity; 312-Water treatment material; 320-Center pipe; 330-Disperser. Detailed Implementation

[0101] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0102] In the description of this application, it should be understood that the terms "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, and "at least one" can mean one, two, or more, unless otherwise explicitly specified. In the description of this application, "perpendicular" means completely perpendicular to 90° or almost completely perpendicular, for example, the range of included angles from 80° to 100° is considered perpendicular. Similarly, "parallel" means completely parallel or almost completely parallel, for example, the range of completely parallel angles from 10° is considered parallel.

[0103] The applicant noted that currently available descaling and filtration control valves operate with the main piston and shut-off valve piston moving simultaneously, without separate control. This causes the shut-off valve piston to open during the main piston's movement, resulting in overfilling of the container connected to the brine suction port and the ingestion of regeneration media into the tank. Furthermore, because the siphon device is integrated into the descaling control valve, its channels cannot automatically open and close, leading to water flowing directly from the inlet to the drain during backwashing, resulting in waste. Current products require simultaneous closure of the outlet, drain, and brine suction ports, placing extremely high demands on product design and manufacturing, hindering production. Additionally, commonly used descaling and filtration control valves have a specific step for filling the brine tank; this step undermines the full potential of the existing valve design, leading to insufficient flow.

[0104] In view of this, the present application provides a control valve to overcome at least one of the above-mentioned technical problems. It should be noted that this control valve is a dual-piston separate control valve, which integrates two separately controlled piston assemblies. In some embodiments, when the first piston 120 of the main valve 10 moves, no water flows through the brine suction channel 208; during backwashing, no water flows directly from the siphon device 230 to the drain connector 201, preventing water waste. By using the second piston 210 of the shut-off valve 20, the water inlet can be directly shut off from the working state simply by controlling the first piston 120 of the main valve 10, making control more convenient and reducing product manufacturing difficulty. Furthermore, when the control valve is in working state, opening the shut-off valve allows for brine tank filling, reducing the movement sequence of the first piston 120 of the main valve 10, enabling the control valve to reach its maximum flow rate in a short time, and reducing the waiting time for maximum water consumption.

[0105] Please refer to the following: Figures 1 to 11 , Figure 1 The three-dimensional structure of the control valve according to an embodiment of this application is illustrated; Figure 2 The diagram illustrates the main view structure of the control valve according to an embodiment of this application; Figure 3 It indicated Figure 2 Right view of the central control valve; Figure 4 The illustration shows the three-dimensional structure of the second valve body 200 in the control valve of this application embodiment; Figure 5 The diagram illustrates the main view structure of the second valve body 200 in the control valve of this application embodiment; Figure 6 It indicated Figure 5 The bottom view of the second valve body 200 in the middle; Figure 7 It indicated Figure 6 Cross-sectional structure of the second valve body 200 along line AA'; Figure 8 The illustration shows the three-dimensional structure of the second valve body 200 in the control valve of this application embodiment as viewed from another angle; Figure 9 The illustration shows the three-dimensional structure of the first valve body 100 in the control valve of this application embodiment; Figure 10 The diagram illustrates the top view of the first valve body 100 in the control valve of this application embodiment; Figure 11 It indicated Figure 10 The cross-sectional structure of the first valve body along line BB'.

[0106] Specifically, in this embodiment, the control valve includes a main valve 10 and a shut-off valve 20; wherein, the main valve 10 includes a first valve body 100 and a first piston 120, the first valve body 100 is provided with a first inner cavity 104 and a plurality of main valve flow channels communicating with the first inner cavity 104; the first piston 120 is disposed in the first inner cavity 104, and the first piston 120 is used to move in the first inner cavity 104 to switch the main valve position of the main valve 10, thereby opening or closing the passage between each main valve flow channel in the first inner cavity 104.

[0107] The shut-off valve 20 includes a second valve body 200 and a second piston 210. The second valve body 200 is connected to the first valve body 100. The second valve body 200 is provided with a second inner cavity 203 and a plurality of shut-off valve flow channels communicating with the second inner cavity 203. The second piston 210 is disposed in the second inner cavity 203 and is used to move in the second inner cavity 203 to switch the shut-off valve position of the shut-off valve 20, thereby opening or closing the passage between each shut-off valve flow channel in the second inner cavity 203.

[0108] The first piston 120 and the second piston 210 are set independently. That is to say, they are not linked together.

[0109] It is understandable that the control valve sets the first piston 120 of the main valve 10 and the second piston 210 of the shut-off valve 20 on different valve bodies (first valve body 100 and second valve body 200), and the two move independently in their respective inner cavities (first inner cavity 104 and second inner cavity 203) to switch valve positions independently. There is no linkage device between them, which can effectively avoid the phenomenon of pistons following each other when moving, thereby avoiding the problem of excessive water injection or the sucking of regeneration medium into the tank.

[0110] In some embodiments, the plurality of main valve channels include an inlet channel 107, an outlet channel 108, an intermediate channel 103, a side channel 109, and a mixing channel 106. The main valve 10 has a first main valve position. When the first piston 120 moves to the first main valve position, the passage between the inlet channel 107, the mixing channel 106, and the side channel 109 is open, and the passage between the intermediate channel 103 and the outlet channel 108 is open.

[0111] In some embodiments, the plurality of shut-off valve channels include a brine suction channel 208, a brine path channel 207, a siphon water suction channel 206, and a jet water channel 205, wherein the siphon water suction channel 206 is connected to the inlet water channel 107; the shut-off valve 20 also includes a siphon device 230, please refer to the following: Figure 19 , Figure 19The diagram illustrates the three-dimensional structure of the siphon device 230 in the control valve of this application embodiment. The siphon device 230 is disposed within the second valve body 200. The siphon device 230 includes a jet port 231, a brine suction port 232, and a mixing port 233 that are interconnected. The jet water channel 205 is connected between the jet port 231 and the second inner cavity 203. The brine channel 207 is connected between the brine suction port 232 and the second inner cavity 203. The mixing water channel 106 is connected between the mixing port 233 and the first inner cavity 104. The shut-off valve 20 has a second valve position. When the second piston 210 moves to the second valve position, the passage between the brine suction channel 208 and the brine channel 207 is open, and the passage between the siphon water channel 206 and the jet water channel 205 is also open.

[0112] Understandably, by setting a first main valve position on the main valve 10 of the control valve and a second valve position on the closing valve 20, when the first piston 120 moves to the first main valve position and the second piston 210 moves to the second valve position, the corresponding channels in the first inner cavity 104 and the second inner cavity 203 are opened. This allows the water entering from the inlet channel 107 to be divided into three paths. The first path flows through the side channel 109, is treated, and then flows into the outlet channel 108 from the middle channel 103 to maintain water supply. The second path enters the mixing port 233 from the mixing channel 106. The water flows to the brine inlet 232. The third path enters the jet water channel 205 from the siphon water channel 206, and then enters the brine inlet 232 through the jet outlet 231. The water from the second and third paths can converge at the brine inlet 232 and flow out from the brine channel 208 to replenish the regeneration liquid in the brine tank. This allows water to be injected into the brine tank while water treatment is being carried out, reducing the need for a dedicated water injection valve. By switching the valve position, the flow rate of the control valve can reach its maximum value in a short time, reducing the movement sequence of the first piston 120 of the main valve 10 and reducing the waiting time for the maximum water consumption.

[0113] In some embodiments, the first valve body 100 is further provided with an inlet connector 101 and an outlet connector 102. The inlet connector 101 is used to connect to the inlet pipe so that the inlet channel 107 can be connected to the inlet pipe, and the outlet connector 102 is used to connect to the outlet pipe so that the outlet channel 108 can be connected to the outlet pipe.

[0114] In some embodiments, the multiple main valve channels also include a drain channel 105. When the first piston 120 moves to the first main valve position, the passage between the drain channel 105 and other main valve channels is closed. Thus, when the first main valve is in the first position, water in other main valve channels will not flow into the drain channel 105, effectively preventing water from flowing out of the drain channel 105 during operation and causing waste.

[0115] Furthermore, the main valve 10 also includes a second main valve position. When the first piston 120 moves to the second main valve position, the passage between the side flow channel 109 and the mixing water flow channel 106 is open, and the passage between the middle flow channel 103 and the sewage discharge channel 105 is also open. In the second main valve position, the control valve can cooperate with the shut-off valve position to achieve brine intake and inlet shut-off.

[0116] In some embodiments, the second valve body 200 is further provided with a drain connector 201 and a salt suction connector 202. The drain connector 201 is used to connect to the drain pipe so that the drain channel 105 can communicate with the drain pipe. The salt suction connector 202 is used to connect to the salt tank so that the salt suction channel 208 can communicate with the salt tank.

[0117] In some embodiments, the multiple main valve channels also include a backwash channel 110; when the first piston 120 moves to the first main valve position or the second main valve position, the passage between the backwash channel 110 and other main valve channels is closed.

[0118] Furthermore, the main valve 10 also includes a third main valve position. When the first piston 120 moves to the third main valve position, the passage between the inlet channel 107 and the backwash channel 110 is open, the passage between the mixing channel 106, the sewage channel 105, and the side channel 109 is open, the passage between the outlet channel 108 and other main valve channels is closed, and the passage between the intermediate channel 103 and other main valve channels is closed. By providing the backwash channel 110 and the third main valve position in the main valve 10, backwashing can be achieved.

[0119] Please combine this with 12~ Figure 13 , Figure 12 The illustration shows the three-dimensional structure of the main valve sealing plug in the control valve of this application embodiment; Figure 13 The illustration shows a cross-sectional structure of the main valve sealing plug installed in the first inner cavity of the control valve in an embodiment of this application. In some embodiments, the main valve 10 further includes a main valve sealing plug 130, which is generally a hollow cylindrical shape and can be manufactured using rubber or other materials that can be used for sealing. The main valve sealing plug 130 is sealed between the first piston 120 and the side wall of the first inner cavity 104. It includes a plurality of first sealing grilles 131 spaced apart along the axial direction of the first piston 120, and the main valve flow channel is located between adjacent first sealing grilles 131.

[0120] Please combine them together Figures 14-16 , Figure 23 and Figure 25 ,in, Figure 14 The diagram illustrates the main view structure of the first piston 120 in the control valve of this application embodiment; Figure 15The illustration shows the three-dimensional structure of the first piston 120 in the control valve of this application embodiment; Figure 16 The illustration shows the three-dimensional structure of the first piston 120 in the control valve of this application as viewed from another angle; Figure 23 This illustration shows the state of the first main valve position of the main valve 10 in the water treatment equipment of this application embodiment; Figure 25 This illustration shows the state of the third main valve position of the main valve 10 in the water treatment equipment of this application embodiment. In some embodiments, the first piston 120 is provided with a first water passage 121 around its axis. When the first piston 120 moves to the first main valve position, the inlet water passage 107, the mixing water passage 106, and the side passage 109 are connected through the first water passage 121; when the first piston 120 moves to the third main valve position, the inlet water passage 107 and the backwash passage 110 are connected through the first water passage 121.

[0121] For further details, please refer to Figure 24 , Figure 24 This illustration shows the state of the second main valve position of the main valve 10 in the water treatment equipment of this application embodiment; in some embodiments, the first piston 120 has a valve core channel 122 that extends through it along the axial direction. When the first piston 120 moves to the second main valve position, the intermediate flow channel 103 and the sewage flow channel 105 are connected through the valve core channel 122.

[0122] In some embodiments, the shut-off valve 20 further includes a shut-off valve sealing plug 240, see [link to relevant documentation] Figure 17 , Figure 17 The diagram illustrates the three-dimensional structure of the shut-off valve sealing plug 240 in the control valve of this application embodiment. The shut-off valve sealing plug 240 is generally a hollow cylinder, and it can be manufactured using rubber or other materials suitable for sealing. It is sealed between the sidewalls of the second piston 210 and the second inner cavity 203. The shut-off valve sealing plug 240 includes a plurality of second sealing grilles 241 spaced apart along the axial direction of the second piston 210, and the shut-off valve flow channel is located between adjacent second sealing grilles 241.

[0123] Please refer to the following as well: Figure 18 and Figure 21 , Figure 18 The three-dimensional structure of the second piston 210 in the control valve of this application embodiment is illustrated. Figure 21 This illustration shows the state of the second valve position of the shut-off valve 20 in the water treatment device of this application embodiment. In some embodiments, the second piston 210 is provided with a second water passage 211 around its axis. When the second piston 210 moves to the second valve position, the siphon water passage 206 and the jet water passage 205 are connected through the second water passage 211.

[0124] Please see Figure 22 , Figure 22The illustration shows the state of the first valve position of the shut-off valve 20 in the water treatment equipment of this application embodiment; in some embodiments, the shut-off valve 20 further includes a first valve position, and when the second piston 210 moves to the first valve position, the passage between each shut-off valve flow channel is closed.

[0125] Furthermore, in some embodiments, the main valve 10 includes a first driving device 140, which is disposed on the first valve body 100 and is used to drive the first piston 120 to move; the shut-off valve 20 includes a second driving device 220, which is disposed on the second valve body 200 and is used to drive the second piston 210 to move. The first driving device 140 and the second driving device 220 can be driven by a motor or other driving device. The first inner cavity 104 can be sealed by covering it with a first end plug 141, and the first driving device 140 can be installed outside the first end plug 141. The second inner cavity 203 can be sealed by covering it with a second end plug 221, and the second driving device 220 can be installed outside the second end plug 221.

[0126] In some embodiments, the first valve body 100 and the second valve body 200 are integral structures, and the sealing performance is ensured by integrally processing the valve body.

[0127] In some embodiments, the axis of the first piston 120 and the axis of the second piston 210 are perpendicular to each other. That is, the main valve 10 and the shut-off valve 20 can be arranged in two mutually perpendicular directions, with the first inner cavity 104, the first piston 120, the second inner cavity 203, and the second piston 210 respectively, to avoid spatial interference caused by setting them in the same direction. This can effectively reduce the space occupied by the piston and the inner cavity, which is beneficial to the miniaturization of the control valve.

[0128] Accordingly, this application also provides a water treatment device; please refer to [link / reference]. Figure 20 , Figure 20 The diagram illustrates the main view of a water treatment device according to an embodiment of this application. The water treatment device includes a control valve and a treatment tank 30 as described in any of the above embodiments. The treatment tank 30 includes a tank body 310 and a central pipe 320. The tank body 310 has a receiving cavity 311 for containing water treatment material 312, and the central pipe 320 is inserted into the receiving cavity 311. The treatment tank 30 is connected to the control valve, the receiving cavity 311 is connected to a side flow channel 109, and the central pipe 320 is connected to a central flow channel 103 and a backwash flow channel 110. The water treatment material 312 can be a softening material or a filter material.

[0129] Furthermore, the processing tank 30 also includes a disperser 330, which is disposed in the receiving cavity 311 and connected to the end of the central tube 320 away from the intermediate flow channel 103.

[0130] Furthermore, the water treatment equipment also includes a salt tank, which is connected to a salt suction channel 208. Specifically, the salt tank can be connected to a salt suction connector 202 to connect to the salt suction channel 208.

[0131] Accordingly, embodiments of this application also provide a control method for a water treatment device, the control method comprising:

[0132] 1. Move the second piston 210 to the first valve position and move the first piston 120 to the first main valve position to treat water through the treatment tank 30; that is, adjust the control valve of the water treatment equipment to the working position.

[0133] For details, please refer to Figure 26 and Figure 27 , Figure 26 This illustration shows the water flow state when valve 20 is closed in the working position of the water treatment device according to an embodiment of this application. Figure 27 The illustration shows the water flow state of the main valve of the water treatment equipment in the working position according to the embodiment of this application. In this position, the second piston 210 is in the first valve position, and the jet water channel 205, the siphon water channel 206, the salt channel 207 and the brine suction channel 208 are all blocked. The first piston 120 is in the first main valve position, and the sewage channel 105 and the backwash channel 110 are blocked. The water entering from the inlet channel 107 enters the side channel 109 through the first water passage 121, enters the receiving cavity 311 from the side channel 109, and after being treated by the water treatment material 312, it flows sequentially through the disperser 330, the central pipe 320 and the intermediate channel 103, and enters the outlet channel 108 through the first inner cavity 104, thereby realizing the treatment of raw water.

[0134] 2. Move the second piston 210 to the second valve position and move the first piston 120 to the second main valve position to draw salt from the salt tank; that is, adjust the control valve of the water treatment equipment to the salt intake position.

[0135] For details, please refer to Figure 28 and Figure 29 , Figure 28 This illustration shows the water flow state of the water treatment device according to an embodiment of this application when valve 20 is closed at the brine level; Figure 29This illustration shows the water flow state of the main valve 10 of the water treatment equipment in the brine suction position of the embodiment of this application. At this time, the second piston 210 of the shut-off valve 20 is in the second valve position, the jet water flow channel 205 and the siphon water flow channel 206 are connected to each other, and the brine flow channel 207 and the brine suction flow channel 208 are connected to each other. The first piston 120 of the main valve 10 is in the second main valve position, the mixing water flow channel 106 and the side flow channel 109 are connected, and the sewage flow channel 105 and the intermediate flow channel 103 are connected. Raw water entering from the inlet channel 107 enters the jet channel 205 through the siphon channel 206, and then enters the siphon device 230 through the jet channel 205 and the jet nozzle 231. During the flow to the mixing port 233, the exchange medium in the salt tank is drawn in through the brine suction channel 208, the brine path channel 207, and the brine suction port 232 by the siphon action. The raw water and the drawn-in exchange medium are mixed and enter the mixing channel 106 from the mixing port 233. The mixture then passes around the first piston 120 and enters the side channel 109, and enters the receiving cavity 311 to replace the water treatment material 312 and restore the water treatment function of the material. The waste material that is exchanged is discharged through the disperser 330, the central pipe 320, the intermediate channel 103, the valve core channel 122, and the sewage discharge channel 105.

[0136] Third, move the second piston 210 to the first valve position and move the first piston 120 to the third main valve position to backwash the treatment tank 30; that is, adjust the control valve of the water treatment equipment to the backwash position.

[0137] For details, please refer to Figure 30 and Figure 31 , Figure 30 This illustration shows the water flow state of the water treatment device in the backwash position when valve 20 is closed in the backwash position according to an embodiment of this application; Figure 31 The illustration shows the water flow state of the main valve 10 in the backwash position of the water treatment equipment of this application embodiment; wherein, the second piston 210 of the shut-off valve 20 is in the first valve position, and the jet water channel 205, the siphon water channel 206, the brine channel 207 and the brine suction channel 208 are all blocked; the first piston 120 is in the third main valve position, the inlet water channel 107 and the backwash channel 110 are connected, and the mixing water channel 106, the sewage channel 105 and the side channel 109 are connected. Raw water enters through the inlet channel 107, passes through the first water tank 121, enters the backwash channel 110, and then enters the central pipe 320 and the disperser 330 through the backwash channel 110. The water treatment material 312 in the receiving cavity 311 is dispersed from the bottom of the tank 310, and foreign objects attached to the water treatment material 312 are flushed out through the side channel 109 and the sewage discharge channel 105. This removes the impurities attached to the water treatment material 312, keeps the water treatment material 312 clean and loose, and maintains good equipment operating condition.

[0138] Fourth, move the second piston 210 to the second valve position and move the first piston 120 to the first main valve position to replenish the regenerated liquid to the salt tank; that is, adjust the control valve to the replenishment position.

[0139] For details, please refer to Figure 32 and Figure 33 , Figure 32 This illustration shows the water flow state when valve 20 is closed during replenishment of the water treatment equipment according to an embodiment of this application; Figure 33 This illustration shows the water flow state of the main valve 10 of the water treatment equipment in this embodiment when the liquid level is replenished. At this time, the second piston 210 is in the second valve position, the jet water channel 205 and the siphon water channel 206 are interconnected, and the salt channel 207 and the brine suction channel 208 are interconnected. The first piston 120 is in the first main valve position, and the raw water enters from the inlet channel 107 and is divided into three paths. One path enters the side channel 109, the receiving cavity 311, and the disperser 330 through the first water passage 121. One path leads to the water supply through the central pipe 320, intermediate flow channel 103, and outlet flow channel; another path leads to the mixing water inlet 233 through the mixing water flow channel 106 and flows to the brine inlet 232; a third path leads to the spray outlet 231 through the siphon water flow channel 206, the second water passage 211, and the jet water flow channel 205, and flows to the brine inlet 232 through the spray outlet 231. At the brine inlet 232, the two raw water paths merge and flow into the brine tank through the brine flow channel 207 and the brine inlet 208, thus replenishing and dissolving the raw water.

[0140] 5. Move the second piston 210 to the first valve position and move the first piston 120 to the second main valve position to shut off the water inlet passage 107; that is, adjust the control valve to the water inlet shut-off position.

[0141] For details, please refer to Figure 34 and Figure 35 , Figure 34 This illustration shows the water flow state of the water treatment device according to an embodiment of this application when the inlet is in the closed position and valve 20 is closed; Figure 35 This describes the water flow state of the main valve 10 of the water treatment equipment in this embodiment when the inlet is closed. At this time, the second piston 210 is in the first valve position, and the jet water channel 205, the siphon water channel 206, the salt channel 207, and the brine suction channel 208 are all blocked. The first piston 120 is in the second main valve position, and the raw water entering from the inlet channel 107 flows into the siphon water channel 206 and is blocked. No water flows out of the outlet channel 108, the sewage channel 105, and the brine suction channel 208, thus achieving the inlet closure.

[0142] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0143] The control valve, water treatment equipment, and control method provided in the embodiments of this application have been described in detail above, and specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A control valve, characterized in that, Includes a main valve (10) and a shut-off valve (20); The main valve (10) includes: The first valve body (100) is provided with a first inner cavity (104) and a plurality of main valve channels communicating with the first inner cavity (104). The main valve channels include an inlet channel (107), an outlet channel (108), a middle channel (103), a side channel (109), and a mixing channel (106). The first piston (120) is disposed in the first inner cavity (104). The first piston (120) is used to move in the first inner cavity (104) to switch the valve position of the main valve (10) and realize the opening or closing of the passage between each of the main valve flow channels in the first inner cavity (104). The shut-off valve (20) includes: The second valve body (200) is connected to the first valve body (100). The second valve body (200) is provided with a second inner cavity (203) and a plurality of shut-off valve channels communicating with the second inner cavity (203). The shut-off valve channels include a brine suction channel (208), a brine path channel (207), a siphon water suction channel (206), and a jet water channel (205). The second piston (210) is disposed in the second inner cavity (203). The second piston (210) is used to move in the second inner cavity (203) to switch the valve position of the shut-off valve (20) to realize the opening or closing of the passage between each shut-off valve flow channel in the second inner cavity (203); A siphon device (230) is disposed inside the second valve body (200). The siphon device (230) includes a jet port (231), a brine inlet (232), and a mixing inlet (233) that are interconnected. The jet water channel (205) is connected between the jet port (231) and the second inner cavity (203). The brine channel (207) is connected between the brine inlet (232) and the second inner cavity (203). The mixing water channel (106) is connected between the mixing inlet (233) and the first inner cavity (104). The first piston (120) and the second piston (210) are arranged independently of each other so that the first piston (120) and the second piston (210) can move independently of each other; The main valve (10) has a first main valve position, and the shut-off valve (20) has a second valve position. When the first piston (120) moves to the first main valve position and the second piston (210) moves to the second valve position, the passage between the inlet channel (107), the mixing channel (106), and the side channel (109) is open, the passage between the intermediate channel (103) and the outlet channel (108) is open, the passage between the siphon channel (206) and the jet channel (205) is open, and the passage between the brine channel (208) and the brine channel (207) is open. The siphon channel (206) is connected to the inlet channel (107), and the mixing channel (106) is connected to the brine channel (207) through the siphon device (230).

2. The control valve according to claim 1, characterized in that, The shut-off valve (20) includes a salt suction connector (202), which is connected to the salt suction channel (208); The shut-off valve (20) has a first valve position. When the second piston (210) moves to the first valve position, the passage between the salt suction channel (208) and the remaining shut-off valve channels is closed, so that the salt suction connector (202) is closed.

3. The control valve according to claim 1 or 2, characterized in that, The shut-off valve (20) has a first valve position. When the second piston (210) moves to the first valve position, the passage between the salt passage (207), the siphon water passage (206), and the jet water passage (205) is closed.

4. The control valve according to claim 1, characterized in that, The main valve (10) has a second main valve position. When the first piston (120) moves to the second main valve position, the passage between the water inlet channel (107) and the rest of the main valve channels is closed.

5. The control valve according to claim 3, characterized in that, When the second piston (210) moves to the second valve position, the jet water channel (205) and the salt channel (207) are connected to each other through the siphon device (230).

6. The control valve according to claim 1, characterized in that, The plurality of main valve channels also include a drain channel (105). When the first piston (120) moves to the first main valve position, the passage between the drain channel (105) and the other main valve channels is closed.

7. The control valve according to claim 6, characterized in that, The plurality of main valve channels also include a backwash channel (110); when the first piston (120) moves to the first main valve position, the passage between the backwash channel (110) and the other main valve channels is closed.

8. The control valve according to claim 7, characterized in that, The main valve (10) also has a third main valve position. When the first piston (120) moves to the third main valve position, the passage between the inlet channel (107) and the backwash channel (110) is open, the passage between the mixing water channel (106), the sewage channel (105) and the side channel (109) is open, the passage between the outlet channel (108) and the remaining main valve channels is closed, and the passage between the intermediate channel (103) and the remaining main valve channels is closed.

9. The control valve according to claim 8, characterized in that, The first piston (120) is provided with a first water passage (121) around its axis. When the first piston (120) moves to the first main valve position, the water inlet channel (107), the mixing water channel (106) and the side channel (109) are connected through the first water passage (121). When the first piston (120) moves to the third main valve position, the water inlet channel (107) and the backwash channel (110) are connected through the first water passage (121).

10. The control valve according to claim 6, characterized in that, The first piston (120) has a valve core channel (122) that runs through it axially. When the first piston (120) moves to the second main valve position, the intermediate flow channel (103) and the sewage flow channel (105) are connected through the valve core channel (122).

11. The control valve according to claim 2, characterized in that, The second piston (210) is provided with a second water passage (211) around its axis. When the second piston (210) moves to the second valve position, the siphon water passage (206) and the jet water passage (205) are connected through the second water passage (211).

12. The control valve according to claim 1, characterized in that, The axis of the first piston (120) and the axis of the second piston (210) are perpendicular to each other.

13. A water treatment device, characterized in that, include: The control valve as claimed in any one of claims 1 to 12, and, The treatment tank (30) includes a tank body (310) and a central tube (320), the tank body (310) having a receiving cavity (311) for containing water treatment material (312), and the central tube (320) being inserted into the receiving cavity (311). The processing tank (30) is connected to the control valve, the receiving cavity (311) is connected to the side flow channel (109), and the central tube (320) is connected to the middle flow channel (103) and the backwash flow channel (110).

14. A control method for the water treatment equipment as described in claim 13, characterized in that, include: Move the second piston (210) to the second valve position and move the first piston (120) to the first main valve position to replenish the regenerated liquid to the salt tank; Move the second piston (210) to the second valve position and move the first piston (120) to the second main valve position to draw salt from the salt tank; Move the second piston (210) to the first valve position and move the first piston (120) to the first main valve position to treat water through the treatment tank (30); Move the second piston (210) to the first valve position and move the first piston (120) to the third main valve position to backwash the treatment tank (30); Move the second piston (210) to the first valve position and move the first piston (120) to the second main valve position to shut off the water inlet passage (107).

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