Control valve and water treatment equipment

Abstract

The invention discloses a control valve and water treatment equipment, the control valve comprises a first valve body and a first piston, the first valve body is provided with a first inner cavity, a liquid inlet, a liquid outlet, a first main valve port, a second main valve port, a third main valve port and a fourth main valve port, and the first main valve port is used for communicating with a first treatment cavity of a first treatment tank; the second main valve port is used for communicating with a first central pipe of the first treatment tank, the third main valve port is used for communicating with a second treatment cavity of the second treatment tank, and the fourth main valve port is used for communicating with a second central pipe of the second treatment tank; the first piston is arranged in the first inner cavity and can move to the first main valve position in the first inner cavity, and when the first piston is located at the first main valve position, a channel between the liquid inlet and the first main valve port and a channel between the liquid inlet and the third main valve port and a channel between the second main valve port and the liquid outlet and a channel between the fourth main valve port and the liquid outlet are opened. Parallel water supply of the first treatment tank and the second treatment tank can be realized, the water treatment flux is improved, and the occupied space is saved.

Description

Technical Field

[0001] The present application belongs to the field of water treatment technology, and specifically relates to a control valve and water treatment equipment. Background Art

[0002] Water softening equipment mainly uses ion exchange resin to remove calcium and magnesium ions from water and reduce water hardness. The filtration and regeneration process of water softening equipment includes four steps: filtration, backwashing, salt absorption and water replenishment. The water path is switched between each step by switching the control valve. Water softening equipment is not only used in household scenarios, but also in scenarios with a relatively large demand for soft water. At this time, the water supply flux demand is high. When a single tank water softening equipment needs to meet a relatively large water output, the volume of the resin tank is often increased to increase the resin filling amount, which causes the water softening equipment to occupy a large space. Summary of the invention

[0003] Purpose of the invention: An embodiment of the present application provides a control valve, aiming to solve the problem that existing soft water equipment occupies a large space; another purpose of an embodiment of the present application is to provide a water treatment device.

[0004] Technical solution: A control valve described in an embodiment of the present application includes:

[0005] A first valve body, comprising a first inner cavity, a liquid inlet, a liquid outlet, a first main valve port, a second main valve port, a third main valve port and a fourth main valve port, wherein the first main valve port is used to connect to a first processing cavity of a first processing tank, the second main valve port is used to connect to a first central tube of the first processing tank, the third main valve port is used to connect to a second processing cavity of a second processing tank, and the fourth main valve port is used to connect to a second central tube of the second processing tank;

[0006] The first piston is arranged in the first inner cavity and is arranged to be able to move to a first main valve position in the first inner cavity. When the first piston is located at the first main valve position, in the first inner cavity, the passage between the liquid inlet and the first main valve port and the third main valve port, and the passage between the second main valve port and the fourth main valve port and the liquid outlet are all opened.

[0007] In some embodiments, the first valve body further has at least one of a fifth main valve port, a sixth main valve port, a seventh main valve port, an eighth main valve port, and a ninth main valve port, and the control valve further satisfies at least one of the following conditions:

[0008] The fifth main valve port is communicated with the third main valve port;

[0009] The sixth main valve port is communicated with the second main valve port;

[0010] When the first piston is located at the first main valve position, the passages among the liquid inlet, the first main valve port, and the third main valve port are opened, the passages among the second main valve port, the fourth main valve port, the eighth main valve port, and the liquid outlet are opened, and the passages of the fifth main valve port, the sixth main valve port, the seventh main valve port, and the ninth main valve port are all closed.

[0011] In some embodiments, the first piston is also configured to be able to move to a second main valve position in the first inner cavity. When the first piston is located at the second main valve position, in the first inner cavity, the passage between the liquid inlet and the first main valve port is opened, the passage between the second main valve port, the eighth main valve port and the liquid outlet is opened, the passage between the fifth main valve port and the seventh main valve port is opened, the passage between the fourth main valve port and the ninth main valve port is opened, and the passage of the third main valve port and the passage of the sixth main valve port are both closed.

[0012] In some embodiments, the first piston is also configured to be able to move to a third main valve position in the first inner cavity. When the first piston is located at the third main valve position, in the first inner cavity, the passage between the liquid inlet and the third main valve port is opened, the passage between the fourth main valve port, the eighth main valve port and the liquid outlet is opened, the passage between the sixth main valve port and the ninth main valve port is opened, the passage between the first main valve port and the seventh main valve port is opened, and the passage of the second main valve port and the passage of the fifth main valve port are both closed.

[0013] In some embodiments, the first piston is also configured to be able to move to a fourth main valve position in the first inner cavity. When the first piston is located at the fourth main valve position, in the first inner cavity, the passages between the liquid inlet, the first main valve port, the fifth main valve port, and the seventh main valve port are opened, the passage between the second main valve port and the third main valve port is opened, the passages between the fourth main valve port, the sixth main valve port, and the ninth main valve port are opened, and the passage between the liquid outlet and the eighth main valve port is opened.

[0014] In some embodiments, the first piston is also configured to be able to move to a fifth main valve position in the first inner cavity. When the first piston is located at the fifth main valve position, in the first inner cavity, the passage of the liquid inlet is closed, and the first main valve port, the second main valve port, the third main valve port, the fourth main valve port, the fifth main valve port, the sixth main valve port, the seventh main valve port, the eighth main valve port, the ninth main valve port and the liquid outlet are not connected to the liquid inlet.

[0015] In some embodiments,

[0016] The control valve further comprises a plurality of main valve sealing grids, which are arranged in the first inner cavity at intervals along the axial direction of the first piston and are sealedly connected to the inner side wall of the first valve body, and are used to divide the first inner cavity into a plurality of main valve chambers; the liquid inlet, the first main valve port, the second main valve port, the third main valve port, the fourth main valve port, the fifth main valve port, the sixth main valve port, the seventh main valve port and the ninth main valve port are respectively connected to different main valve chambers, and the liquid outlet and the eighth main valve port are connected to the same main valve chamber;

[0017] The main valve sealing grid is arranged around the outer peripheral side of the first piston, and the main valve sealing grid is arranged to be able to be sealed and connected with the first piston to isolate the main valve chambers located on both sides of the main valve sealing grid;

[0018] The main valve sealing grid is also configured to be spaced apart from the first piston so that the main valve chambers located on both sides of the main valve sealing grid are communicated with each other.

[0019] In some embodiments, the first piston comprises:

[0020] A plurality of main valve water channels are arranged at intervals along the axial direction of the first piston;

[0021] A plurality of main valve sealing steps are arranged at intervals along the axial direction of the first piston, and a main valve water channel is formed between two adjacent main valve sealing steps;

[0022] When the main valve sealing grid is sealed to the main valve sealing step, the main valve sealing grid isolates the main valve chambers located on both sides of the main valve sealing grid;

[0023] When the main valve sealing grid is arranged opposite to the main valve water passage groove, the main valve water passage groove is connected to the main valve chambers located on both sides of the main valve sealing grid.

[0024] In some embodiments,

[0025] The plurality of main valve water channels include at least two first water channels and at least two second water channels, the at least two first water channels are arranged at intervals along the axial direction of the first piston, and the at least two second water channels are symmetrically arranged on both sides of the at least two first water channels;

[0026] Multiple main valve sealing steps include:

[0027] A first sealing step is arranged between two adjacent first water channels;

[0028] At least two second sealing steps are symmetrically arranged on both sides of the first sealing step; a first water flow groove is formed between each of the second sealing steps and the first sealing step;

[0029] at least two third sealing steps, symmetrically arranged on both sides of the first sealing step, and along the axial direction of the first piston, the third sealing step is located on a side of the second sealing step away from the first sealing step;

[0030] Among them, along the axial direction of the first piston, the size of the first water groove is larger than the size of the second water groove, the size of the first sealing step is larger than the size of the second sealing step, and the size of the first sealing step is larger than the size of the third sealing step.

[0031] In some embodiments, along the axial direction of the first piston, the first main valve port and the third main valve port are symmetrically arranged on both sides of the liquid inlet, the second main valve port and the fourth main valve port are symmetrically arranged on both sides of the liquid outlet, the third main valve port and the second main valve port are arranged between the liquid inlet and the liquid outlet, the fifth main valve port is arranged on the side of the first main valve port away from the liquid inlet, and the sixth main valve port is arranged on the side of the fourth main valve port away from the liquid outlet; the ninth main valve port is arranged between the fourth main valve port and the sixth main valve port, and the ninth main valve port is arranged on the side of the first piston away from the sixth main valve port; the seventh main valve port is arranged between the fifth main valve port and the first main valve port, and the seventh main valve port is arranged on the side of the first piston away from the first main valve port.

[0032] In some embodiments, the control valve further comprises:

[0033] The second valve body has a second inner cavity, a first auxiliary valve port, a second auxiliary valve port, a third auxiliary valve port and a salt port, wherein the first auxiliary valve port is communicated with the eighth main valve port, and the salt port is used to communicate with the salt box;

[0034] a second piston, disposed in the second inner cavity and configured to be able to move to a first auxiliary valve position in the second inner cavity; when the second piston is located at the first auxiliary valve position, in the second inner cavity, a passage between the first auxiliary valve port and the second auxiliary valve port, a passage between the first auxiliary valve port and the salt port, and a passage between the third auxiliary valve port and the salt port are all opened;

[0035] The jet device comprises a jet inlet and a nozzle port which are connected to each other. The jet inlet is arranged to be able to communicate with the second sub-valve port, and the nozzle port is arranged to be able to communicate with the third sub-valve port.

[0036] In some embodiments,

[0037] The jet device also has a siphon port, which is connected to the jet inlet and the nozzle port;

[0038] The second valve body further has one or more of a fourth auxiliary valve port, a fifth auxiliary valve port, a sixth auxiliary valve port, and a sewage outlet; and the control valve further satisfies at least one of the following conditions:

[0039] The fourth auxiliary valve port is connected to the ninth main valve port;

[0040] The fifth auxiliary valve port is communicated with the seventh main valve port;

[0041] The sixth sub-valve port is communicated with the siphon port;

[0042] When the second piston is located at the first secondary valve position, in the second inner cavity, the passages among the first secondary valve port, the second secondary valve port, the third secondary valve port, the fourth secondary valve port and the salt port are opened, and the passages of the fifth secondary valve port, the sixth secondary valve port and the sewage outlet are closed.

[0043] In some embodiments, the second piston is further configured to be able to move to a second secondary valve position in the second inner cavity. When the second piston is located at the second secondary valve position, in the second inner cavity, the passage between the first secondary valve port and the second secondary valve port, and the passage between the third secondary valve port and the fourth secondary valve port are all opened, and the passage of the salt port, the passage of the fifth secondary valve port, the passage of the sixth secondary valve port, and the passage of the sewage outlet are all closed.

[0044] In some embodiments, the second piston is further configured to be able to move to a third secondary valve position in the second inner cavity. When the second piston is located at the third secondary valve position, in the second inner cavity, the passage between the first secondary valve port and the second secondary valve port, the passage between the third secondary valve port and the fourth secondary valve port, the passage between the salt port and the sixth secondary valve port, and the passage between the fifth secondary valve port and the sewage outlet are all opened.

[0045] In some embodiments, the second piston is further configured to be able to move to a fourth sub-valve position in the second inner cavity. When the second piston is located at the fourth sub-valve position, in the second inner cavity, the passages among the first sub-valve port, the second sub-valve port, the third sub-valve port and the fourth sub-valve port are opened, the passage between the fifth sub-valve port and the sewage outlet is opened, and the passages of the salt outlet and the sixth sub-valve port are both closed.

[0046] In some embodiments, the second piston is further configured to be able to move to a fifth sub-valve position in the second inner cavity. When the second piston is located at the fifth sub-valve position, in the second inner cavity, the passages among the first sub-valve port, the second sub-valve port and the fifth sub-valve port are opened, the passages among the third sub-valve port, the fourth sub-valve port and the sewage outlet are opened, and the passages of the salt outlet and the sixth sub-valve port are both closed.

[0047] In some embodiments, the second piston is further configured to be able to move to a sixth sub-valve position in the second inner cavity. When the second piston is located at the sixth sub-valve position, in the second inner cavity, the passages between the first sub-valve port, the second sub-valve port and the fifth sub-valve port are opened, the passages between the third sub-valve port and the fourth sub-valve port are opened, and the passages of the salt port, the sixth sub-valve port and the sewage outlet are all closed.

[0048] In some embodiments,

[0049] The control valve further comprises a plurality of auxiliary valve sealing grids, which are arranged in the second inner cavity at intervals along the axial direction of the second piston and are sealed and connected to the inner side wall of the second valve body, and are used to divide the second inner cavity into a plurality of auxiliary valve chambers; the first auxiliary valve port and the second auxiliary valve port are in communication with the same auxiliary valve chamber, the third auxiliary valve port and the fourth auxiliary valve port are in communication with the same auxiliary valve chamber, and the fifth auxiliary valve port, the sixth auxiliary valve port, the salt port and the sewage outlet are in communication with different auxiliary valve chambers respectively;

[0050] The auxiliary valve sealing grid is arranged around the outer peripheral side of the second piston, and the auxiliary valve sealing grid is arranged to be able to be sealed and connected with the second piston to isolate the auxiliary valve chambers located on both sides of the auxiliary valve sealing grid;

[0051] The auxiliary valve sealing grid is also configured to be spaced apart from the second piston so that the auxiliary valve chambers located on both sides of the auxiliary valve sealing grid are communicated with each other.

[0052] In some embodiments, the second piston comprises:

[0053] A plurality of auxiliary valve water channels are arranged at intervals along the axial direction of the second piston;

[0054] A plurality of auxiliary valve sealing steps are arranged at intervals along the axial direction of the second piston, and an auxiliary valve water channel is formed between two adjacent auxiliary valve sealing steps;

[0055] When the auxiliary valve sealing grid is sealed and connected to the auxiliary valve sealing step, the auxiliary valve sealing grid isolates the auxiliary valve chambers located on both sides of the auxiliary valve sealing grid;

[0056] When the auxiliary valve sealing grid is arranged opposite to the auxiliary valve water passage, the auxiliary valve water passage is communicated with the auxiliary valve chambers located on both sides of the auxiliary valve sealing grid.

[0057] In some embodiments, the second piston has a flow passage, and the flow passage is used to connect at least two of the auxiliary valve chambers.

[0058] In some embodiments, the second inner cavity includes a secondary valve cavity and a salt valve cavity arranged along the axial direction of the second piston and connected to each other, the second piston includes a secondary valve piston and a salt valve piston arranged along the axial direction and connected to each other, the secondary valve piston is disposed in the secondary valve cavity, and at least a portion of the salt valve piston is disposed in the salt valve cavity;

[0059] The first auxiliary valve port, the second auxiliary valve port, the third auxiliary valve port, the fourth auxiliary valve port, the fifth auxiliary valve port and the sewage outlet are correspondingly arranged at the auxiliary valve cavity, and the salt port and the sixth auxiliary valve port are correspondingly arranged at the salt valve cavity.

[0060] In some embodiments, the jet device includes a check portion, which is disposed at the nozzle opening and is used to block the liquid flowing from the third sub-valve opening to the nozzle opening.

[0061] Correspondingly, a water treatment equipment described in an embodiment of the present application includes a first treatment tank, a second treatment tank and a control valve as described in any of the aforementioned embodiments, the first main valve port of the control valve is connected to the first treatment chamber of the first treatment tank, the second main valve port of the control valve is connected to the first center pipe of the first treatment tank, the third main valve port of the control valve is connected to the second treatment chamber of the second treatment tank, and the fourth main valve port of the control valve is connected to the second center pipe of the second treatment tank.

[0062] Beneficial effect: Compared with the prior art, a control valve in an embodiment of the present application comprises a first valve body and a first piston, the first valve body having a first inner cavity, a liquid inlet, a liquid outlet, a first main valve port, a second main valve port, a third main valve port and a fourth main valve port, the first main valve port being used to connect the first processing cavity of the first processing tank, the second main valve port being used to connect the first center pipe of the first processing tank, the third main valve port being used to connect the second processing cavity of the second processing tank, and the fourth main valve port being used to connect the second center pipe of the second processing tank; the first piston is arranged in the first inner cavity, and is arranged to be able to move to the first main valve position in the first inner cavity, when the first piston is located at the first main valve position, in the first inner cavity, the passages between the liquid inlet and the first main valve port and the third main valve port, and the passages between the second main valve port and the fourth main valve port and the liquid outlet are all opened. The present application arranges a first main valve port, a second main valve port, a third main valve port and a fourth main valve port on the first valve body at intervals, wherein the first main valve port is used to communicate with the first processing chamber of the first processing tank, the third main valve port is used to communicate with the second processing chamber of the second processing tank, the second main valve port is used to communicate with the first center pipe of the first processing tank, and the fourth main valve port is used to communicate with the second center pipe of the second processing tank. When the first piston moves to the first main valve position, the liquid inlet is respectively communicated with the first main valve port and the third main valve port, and the liquid outlet is respectively communicated with the second main valve port and the fourth main valve port. At this time, the liquid inlet can simultaneously supply liquid to the first main valve port and the third main valve port. The control valve is connected to the first treatment tank and the second treatment tank through the control valve, and the control valve is connected to the third main valve port to supply water, thereby realizing simultaneous water supply to the first treatment tank and the second treatment tank, and making the water output from the first treatment tank and the second treatment tank flow to the liquid outlet from the second main valve port and the fourth main valve port respectively at the same time, realizing simultaneous water output; this arrangement can realize parallel water supply to the first treatment tank and the second treatment tank, effectively improving the water treatment flux of the control valve, and thus improving the water treatment capacity; and using one control valve to realize parallel water supply to the two treatment tanks, effectively improving the integration, and greatly saving space occupancy while ensuring a large water treatment capacity, and can be used in an environment with a small space.

[0063] Compared with the prior art, a water treatment device in an embodiment of the present application includes a first treatment tank, a second treatment tank, and a control valve as in any of the above embodiments, wherein the first main valve port of the control valve is connected to the first treatment chamber of the first treatment tank, the second main valve port of the control valve is connected to the first center pipe of the first treatment tank, the third main valve port of the control valve is connected to the second treatment chamber of the second treatment tank, and the fourth main valve port of the control valve is connected to the second center pipe of the second treatment tank. It is understandable that the water treatment device of the present application includes all the technical features and technical effects of the above control valve, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0065] Figure 1 A schematic diagram of the structure of a control valve provided in some embodiments of the present application;

[0066] Figure 2 A schematic structural diagram of a first valve body of a control valve provided in some embodiments of the present application;

[0067] Figure 3 A schematic diagram of the structure of a first piston of a control valve provided in some embodiments of the present application;

[0068] Figure 4 A schematic diagram of the structure of a second valve body of a control valve provided in some embodiments of the present application;

[0069] Figure 5 A schematic diagram of the structure of a second piston of a control valve provided in some embodiments of the present application;

[0070] Figure 6 A schematic diagram of the structure of a jet device of a control valve provided in some embodiments of the present application;

[0071] Figure 7 A schematic diagram of a flow path of a control valve provided in some embodiments of the present application;

[0072] Figure 8 A schematic diagram of the parallel water supply state of water treatment equipment provided in some embodiments of the present application;

[0073] Fig. 9 A schematic diagram of a state where water treatment equipment provided in some embodiments of the present application supplies water in parallel and fills water into a salt box;

[0074] Fig.10 A schematic diagram of the structure of a water treatment device provided in some embodiments of the present application, in which the first treatment tank is supplying water and the second treatment tank is in a standby state;

[0075] Fig.11 A schematic diagram of the structure of a water treatment device provided in some embodiments of the present application, in which the first treatment tank supplies water and the second treatment tank absorbs salt;

[0076] Fig.12 A schematic diagram of the structure of a water treatment device provided in some embodiments of the present application, in which the first treatment tank is supplied with water and the second treatment tank is backwashed;

[0077] Fig.13A schematic diagram of the structure of a water treatment device provided in some embodiments of the present application, in which the first treatment tank is supplied with water and the second treatment tank is in a washing state;

[0078] Fig.14 A schematic diagram of the structure of a water treatment device provided in some embodiments of the present application, in which the second treatment tank is supplied with water and the first treatment tank is in a standby state;

[0079] Fig.15 A schematic diagram of the structure of the water treatment equipment provided in some embodiments of the present application, in which the second treatment tank supplies water and the first treatment tank absorbs salt;

[0080] Fig.16 A schematic diagram of the structure of the water treatment equipment provided in some embodiments of the present application, showing the water supply to the second treatment tank and the backwashing state of the first treatment tank;

[0081] Fig.17 A schematic diagram of the structure of the water treatment equipment provided in some embodiments of the present application, in which the second treatment tank is supplied with water and the first treatment tank is in a normal washing state;

[0082] Fig.18 A schematic diagram of the structure of a water treatment device in bypass state provided in some embodiments of the present application;

[0083] Fig.19 A schematic diagram of a structure of a water treatment device in a closed state provided in some embodiments of the present application;

[0084] Fig. 20 Another structural schematic diagram of a water treatment device in a closed state provided in some embodiments of the present application;

[0085] Reference numerals: 100, first valve body; 110, first inner cavity; 111, main valve chamber; 120, liquid inlet; 130, liquid outlet; 141, first main valve port; 142, second main valve port; 143, third main valve port; 144, fourth main valve port; 145, fifth main valve port; 146, sixth main valve; 147, seventh main valve port; 148, eighth main valve port; 149, ninth main valve port; 150, first flow channel; 1 60, second flow channel; 170, third flow channel; 180, fourth flow channel; 190, fifth flow channel; 200, first piston; 210, main valve water channel; 211, first water channel; 212, second water channel; 220, main valve sealing step; 221, first sealing step; 222, second sealing step; 223, third sealing step; 300, main valve sealing grid; 400, second valve body; 410, second inner cavity; 4 11. Auxiliary valve chamber; 412. Auxiliary valve chamber; 413. Salt valve chamber; 420. Salt port; 430. Drain port; 441. First auxiliary valve port; 442. Second auxiliary valve port; 443. Third auxiliary valve port; 444. Fourth auxiliary valve port; 445. Fifth auxiliary valve port; 446. Sixth auxiliary valve port; 450. Sixth flow channel; 460. Seventh flow channel; 470. Eighth flow channel; 500. Second piston; 510. Auxiliary valve water channel; 520 , auxiliary valve sealing step; 530, flow channel; 540, auxiliary valve piston; 550, salt valve piston; 600, auxiliary valve sealing grid; 700, jet device; 710, jet inlet; 720, nozzle mouth; 730, check part; 740, siphon mouth; 800, first treatment tank; 810, first treatment chamber; 820, first central tube; 900, second treatment tank; 910, second treatment chamber; 920, second central tube. DETAILED DESCRIPTION

[0086] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0087] In the description of the present application, it should be understood that the terms "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, "multiple" means two or more, and at least one means one, two or more, unless otherwise clearly and specifically defined. In the description of this application, "vertical" means completely vertical at 90° or almost completely vertical, for example, an angle within the range of 80° to 100° is considered vertical. Similarly, "parallel" means completely parallel or almost completely parallel, for example, an angle within 10° of completely parallel is considered parallel.

[0088] There are many scenarios in daily life that require water hardness, so water treatment equipment needs to be set up to output soft water. For scenarios with relatively large soft water demand, the water supply flux demand is high. Users generally choose a single-tank soft water valve. To meet a relatively large water output, the volume of the treatment tank is often increased to increase the filling amount of the filter material. However, the equipment is large in size and cannot continuously provide soft water during the regeneration process. Therefore, there are also double-tank double-valve systems that use two valves to meet water demand. Reasonable control of the regeneration of the two valves is required, and the regeneration cycle is staggered, making the operation process and operation method more complicated. At the same time, the volume of the double-tank double-valve system is also large, which occupies a large space and cannot be applied to areas with limited space.

[0089] In view of this, an embodiment of the present application provides a control valve and a water treatment device, aiming to solve the above-mentioned problems.

[0090] like Figure 1As shown, the embodiment of the present application provides a control valve, including a first valve body 100 and a first piston 200, the first valve body 100 has a first inner cavity 110, a liquid inlet 120, a liquid outlet 130, a first main valve port 141, a second main valve port 142, a third main valve port 143 and a fourth main valve port 144, the first main valve port 141 is used to connect to the first processing chamber 810 of the first processing tank 800, the second main valve port 142 is used to connect to the first center pipe 820 of the first processing tank 800, and the third main valve port 143 is used to connect to the second processing chamber 810 of the first processing tank 800. The second processing chamber 910 of the processing tank 900, the fourth main valve port 144 is used to connect the second center tube 920 of the second processing tank 900; the first piston 200 is arranged in the first inner cavity 110, and is arranged to be able to move to the first main valve position in the first inner cavity 110. When the first piston 200 is located at the first main valve position, in the first inner cavity 110, the passage between the liquid inlet 120 and the first main valve port 141 and the third main valve port 143, and the passage between the second main valve port 142 and the fourth main valve port 144 and the liquid outlet 130 are all opened.

[0091] In the embodiment of the present application, a first main valve port 141, a second main valve port 142, a third main valve port 143 and a fourth main valve port 144 are arranged at intervals on the first valve body 100, wherein the first main valve port 141 is used to communicate with the first processing chamber 810 of the first processing tank 800, the third main valve port 143 is used to communicate with the second processing chamber 910 of the second processing tank 900, the second main valve port 142 is used to communicate with the first center tube 820 of the first processing tank 800, and the fourth main valve port 144 is used to communicate with the second center tube 920 of the second processing tank 900, and when the first piston 200 moves to the first main valve position, the liquid inlet 120 is respectively connected to the first main valve port 141 and the third main valve port 143, and the liquid outlet 130 is respectively connected to the second main valve port 142 and the fourth main valve port 144. The valve port 144 is connected, and at this time the liquid inlet 120 can supply water to the first main valve port 141 and the third main valve port 143 at the same time, thereby realizing the simultaneous supply of water to the first treatment tank 800 and the second treatment tank 900, and making the water output from the first treatment tank 800 and the second treatment tank 900 flow from the second main valve port 142 and the fourth main valve port 144 to the liquid outlet 130 at the same time, thereby realizing the simultaneous output of water; this arrangement can realize the parallel water supply of the first treatment tank 800 and the second treatment tank 900, effectively improving the water treatment flux of the control valve, thereby improving the water treatment capacity; and using one control valve to realize the parallel water supply of the two treatment tanks, effectively improving the integration, and greatly saving space occupancy while ensuring a large water treatment capacity, and can be used in an environment with a smaller space.

[0092] In the embodiment of the present application, the control valve is used to treat the raw water to a certain hardness. The control valve is used to connect with multiple treatment tanks to realize water supply, forward washing, backwashing and other operations of multiple treatment tanks. The control valve of the embodiment of the present application can be preferably connected with two treatment tanks to realize the control of the two treatment tanks, wherein the treatment tank can be a resin tank, or other types of treatment tanks, and the resin is replaced with other types of filter materials (such as adsorbent materials such as activated carbon) to obtain the corresponding water treatment effect. In addition, the filter materials in the first treatment tank 800 and the second treatment tank 900 can be the same type of filter materials, or different types of filter materials, which can be set according to the actual water treatment requirements. At the same time, the first inner cavity 110 of the first valve body 100 of the present application is used to accommodate the first piston 200, and the first piston 200 can move along the axial direction of the first piston 200 in the first inner cavity 110, so as to realize the switching of the valve position. In addition, the first piston 200 can be connected to a driving mechanism to drive the first piston 200 to move in the first inner cavity 110 to switch the valve position. The driving mechanism can be various types of motors. According to the position requirements of different valve positions, the driving mechanism drives the first piston 200 to move different distances along its axial direction, thereby realizing the switching of different valve positions. It should be noted that the switching of different valve positions will correspond to different communication modes of different valve ports.

[0093] Specifically, the first main valve port 141, the third main valve port 143, the second main valve port 142 and the fourth main valve port 144 of the first valve body 100 are arranged at intervals along the axial direction of the first piston 200, the injection port is arranged at intervals between the first main valve port 141 and the third main valve port 143, and the liquid outlet 130 is arranged at intervals between the second main valve port 142 and the fourth main valve port 144. The passages of the first main valve port 141, the third main valve port 143, the second main valve port 142 and the fourth main valve port 144 can be controlled and switched by the first piston 200 moving axially in the first inner cavity 110. For example, when the first piston 200 moves to the first main valve position, the liquid inlet 120 can simultaneously inject raw water into the first main valve port 141 and the third main valve port 143. At this time, the raw water injected from the first main valve port 141 can flow through the first treatment chamber 810 and the first central tube 820 of the first treatment tank 800 connected to the control valve in sequence, and flow to the liquid outlet 130 after reaching the second main valve port 142; the raw water injected from the third main valve port 143 can flow through the second treatment chamber 910 and the second central tube 920 of the second treatment tank 900 connected to the control valve in sequence, and flow to the liquid outlet 130 after reaching the fourth main valve port 144, so as to realize the first treatment tank 800 and the second treatment tank 900 entering and exiting at the same time, thereby realizing the parallel supply of soft water to the first treatment tank 800 and the second treatment tank 900, which can effectively increase the water flow rate and improve the water treatment capacity. At the same time, one control valve in the embodiment of the present application controls two treatment tanks, which can effectively reduce the overall space occupation and is suitable for environments with smaller space.

[0094] It should be noted that, the different moving positions of the first piston 200 will result in different states of passages of different main valve ports. Therefore, the different moving positions of the first piston 200 in the first inner cavity 110 of the first valve body 100 of the present application can not only realize the parallel water supply of the first treatment tank 800 and the second treatment tank 900, but also realize the separate water supply of the first treatment tank 800 or the second treatment tank 900. For example, the first piston 200 moves to a certain position, at which time only the passages of the first main valve port 141 and the second main valve port 142 may be in an open state, but the passages of the third main valve port 143 and the fourth main valve port 144 are in a closed state. At this time, no raw water is injected into the second treatment tank 900, and the first treatment tank 800 can be injected with raw water and process the raw water, so that the first treatment tank 800 can be supplied with water separately. Alternatively, the passages of the first main valve port 141 and the second main valve port 142 are in a closed state, and the passages of the third main valve port 143 and the fourth main valve port 144 are in an open state. At this time, no raw water is injected into the first treatment tank 800, and the second treatment tank 900 can be injected with raw water and process the raw water, thereby achieving independent water supply to the second treatment tank 900.

[0095] Please refer to Figure 1 , Figure 2 , Figure 7-Figure 20 In some embodiments, the first valve body 100 also has at least one of the fifth main valve port 145, the sixth main valve port 146, the seventh main valve port 147, the eighth main valve port 148, and the ninth main valve port 149, and the control valve also satisfies at least one of the following conditions: the fifth main valve port 145 is connected to the third main valve port 143; and / or, the sixth main valve port 146 is connected to the second main valve port 142; and / or, when the first piston 200 is located in the first main valve position, the passage between the liquid inlet 120, the first main valve port 141, and the third main valve port 143 is opened, the passage between the second main valve port 142, the fourth main valve port 144, the eighth main valve port 148 and the liquid outlet 130 is opened, and the passage of the fifth main valve port 145, the passage of the sixth main valve port 146, the passage of the seventh main valve port 147, and the passage of the ninth main valve port 149 are all closed.

[0096] In the embodiment of the present application, the opening and closing of the passages of each main valve port can be selected according to the actual functional requirements of the control valve. The present application sets the fifth main valve port 145 to be connected with the third main valve port 143. At this time, the raw water flowing out of the third main valve port 143 can not only enter the second treatment tank 900, but also flow to the fifth main valve port 145, and flow to the main valve chamber 111 connected to the fifth main valve port 145 through the fifth main valve port 145, providing a connected waterway for realizing other subsequent functions of the control valve. The present application sets the sixth main valve 146 port to be connected with the second main valve port 142. At this time, the main valve chamber 111 connected to the sixth main valve 146 port can also be connected with the second main valve port 142, and the switching of the control valve function can also be realized based on this passage.

[0097] It should be noted that the control valve can be provided with different main valve ports of the first valve body 100 according to different functional requirements, and the valve ports not required for the function may not be provided. Of course, the first valve body 100 of the present application is provided with nine main valve ports from the first main valve port 141 to the ninth main valve port 149, which can realize multiple functions by cooperating with the second valve body 400 and the second piston 500. For example, in the embodiment of the present application, when the first piston 200 is in the first main valve position, the first treatment tank 800 and the second treatment tank 900 are connected in parallel to supply water. In addition, the first treatment tank 800 and the second treatment tank 900 can also be connected in parallel to supply water while the salt box is filled with water, so that the soft water salt in the salt box is dissolved into salt water of the required concentration.

[0098] like Figure 8 and Fig. 9 The figure shows the working state when the first piston 200 is in the first main valve position. At this time, the raw water can reach the first main valve port 141 and the third main valve port 143 from the liquid inlet 120 respectively, the raw water flowing out of the first main valve port 141 enters the first processing chamber 810 of the first processing tank 800, and flows to the second main valve port 142 through the first central tube 820, the raw water flowing out of the second main valve port 142 enters the second processing chamber 910 of the second processing tank 900, and flows to the fourth main valve port 144 through the second central tube 920, the soft water flowing out of the second main valve port 142 and the fourth main valve port 144 flows to the liquid outlet 130 at the same time, and flows from the liquid outlet 130 to the rear end water pipeline, so that the first processing tank 800 and the second processing tank 900 are supplied with water in parallel.

[0099] Please refer to Figure 10-13In some embodiments, the first piston 200 is also configured to be able to move to the second main valve position in the first inner cavity 110. When the first piston 200 is located at the second main valve position, in the first inner cavity 110, the passage between the liquid inlet 120 and the first main valve port 141 is opened, the passage between the second main valve port 142, the eighth main valve port 148 and the liquid outlet 130 is opened, the passage between the fifth main valve port 145 and the seventh main valve port 147 is opened, the passage between the fourth main valve port 144 and the ninth main valve port 149 is opened, and the passage of the third main valve port 143 and the passage of the sixth main valve port 146 are both closed.

[0100] In the embodiment of the present application, by controlling the first piston 200 to be in the second main valve position, the first treatment tank 800 can be used to treat the raw water and supply water, while the second treatment tank 900 does not supply water. The second treatment tank 900 can be in one of the standby state, salt absorption state, backwash state and forward wash state. By setting the first treatment tank 800 to supply water and the second treatment tank 900 to regenerate, it is possible to reduce the workload of the water treatment equipment when the water consumption requirement is not high, and at the same time reduce the water treatment cost.

[0101] Specifically, when the first piston 200 moves to the second main valve position, raw water can reach the first main valve port 141 from the liquid inlet 120, and the raw water flowing out of the first main valve port 141 enters the first processing chamber 810 of the first processing tank 800, and flows to the second main valve port 142 through the first central pipe 820, and the soft water flowing out of the second main valve port 142 flows to the liquid outlet 130, and flows from the liquid outlet 130 to the rear end water pipeline, so as to realize water supply to the first processing tank 800. At this time, since the passage of the third main valve port 143 is closed, no raw water flows through the second processing tank 900, and the second processing tank 900 is not supplied with water.

[0102] Please refer to Figure 14-17 In some embodiments, the first piston 200 is also configured to be able to move to the third main valve position in the first inner cavity 110. When the first piston 200 is located at the third main valve position, in the first inner cavity 110, the passage between the liquid inlet 120 and the third main valve port 143 is opened, the passage between the fourth main valve port 144, the eighth main valve port 148 and the liquid outlet 130 is opened, the passage between the sixth main valve port 146 and the ninth main valve port 149 is opened, the passage between the first main valve port 141 and the seventh main valve port 147 is opened, and the passage of the second main valve port 142 and the passage of the fifth main valve port 145 are both closed.

[0103] In the embodiment of the present application, by controlling the first piston 200 to be in the third main valve position, the second treatment tank 900 can be used to treat and supply raw water, and the first treatment tank 800 does not supply water. The first treatment tank 800 can be in one of the standby state, salt absorption state, backwash state and forward wash state at this time. By setting the second treatment tank 900 to supply water and the first treatment tank 800 to regenerate, it is possible to reduce the workload of the water treatment equipment when the water consumption requirement is not high, and at the same time reduce the water treatment cost.

[0104] Specifically, when the first piston 200 moves to the third main valve position, raw water can reach the third main valve port 143 from the liquid inlet 120, and the raw water flowing out of the third main valve port 143 enters the second processing chamber 910 of the second processing tank 900, and flows to the fourth main valve port 144 through the second central pipe 920, and the soft water flowing out of the fourth main valve port 144 flows to the liquid outlet 130, and flows from the liquid outlet 130 to the rear end water pipeline, so as to realize water supply to the second processing tank 900. At this time, since the passage of the first main valve port 141 is closed, no raw water flows through the first processing tank 800, and the first processing tank 800 is not supplied with water.

[0105] The present application sets the first piston 200 to be able to move to the second main valve position and the third main valve position, so that the first treatment tank 800 supplies water and the second treatment tank 900 is on standby or regenerated, or the second treatment tank 900 supplies water and the first treatment tank 800 is on standby or regenerated. In this way, the first treatment tank 800 and the second treatment tank 900 can be used as a backup, and uninterrupted water supply and regeneration can be achieved, effectively improving the working efficiency of the water treatment equipment.

[0106] like Fig.18 and Fig.19 As shown, in some embodiments, the first piston 200 is also configured to be able to move to the fourth main valve position in the first inner cavity 110. When the first piston 200 is located at the fourth main valve position, in the first inner cavity 110, the passages between the liquid inlet 120, the first main valve port 141, the fifth main valve port 145, and the seventh main valve port 147 are opened, the passage between the second main valve port 142 and the third main valve port 143 is opened, the passage between the fourth main valve port 144, the sixth main valve port 146, and the ninth main valve port 149 is opened, and the passage between the liquid outlet 130 and the eighth main valve port 148 is opened.

[0107] In the embodiment of the present application, by setting the first piston 200 to be able to move to the fourth main valve position, in conjunction with the control of the second valve body 400, the second piston 500 and the jet device 700, the control valve bypass function and the closing function can be realized.

[0108] Specifically, when the first piston 200 is located at the fourth main valve position, the passages between the liquid outlet 130 and the second main valve port 142 and the fourth main valve port 144 are all closed, and the control valve can be in two states at this time. One of them is: the raw water enters from the liquid inlet 120 and flows out from the seventh main valve port 147 through the combined structure of the second valve body 400, the second piston 500 and the jet device 700, and flows out directly from the water outlet. At this time, the raw water is not treated. It should be noted that at this time, a part of the water may still flow through the treatment tank, but it will be throttled by the combined structure of the second valve body 400, the second piston 500 and the jet device 700, and cannot flow to the liquid outlet 130. Therefore, at this time, the first treatment tank 800 and the second treatment tank 900 are not working, and the control valve is in a bypass state. The other is: the raw water enters from the liquid inlet 120 and flows out from the seventh main valve port 147, and flows to the combined structure of the second valve body 400, the second piston 500 and the jet device 700, or flows out from the first main valve port 141 through two treatment tanks and flows to the combined structure of the second valve body 400, the second piston 500 and the jet device 700, and is blocked by the combined structure of the second valve body 400, the second piston 500 and the jet device 700. The raw water cannot continue to flow, and the water flow is shut off. At this time, the control valve is in a closed state.

[0109] like Fig. 20 As shown, in some embodiments, the first piston 200 is also configured to be able to move to the fifth main valve position in the first inner cavity 110. When the first piston 200 is located at the fifth main valve position, in the first inner cavity 110, the passage of the liquid inlet 120 is closed, and the first main valve port 141, the second main valve port 142, the third main valve port 143, the fourth main valve port 144, the fifth main valve port 145, the sixth main valve port 146, the seventh main valve port 147, the eighth main valve port 148, the ninth main valve port 149 and the liquid outlet 130 are not connected to the liquid inlet 120.

[0110] In the embodiment of the present application, the first piston 200 is arranged to be able to move to the fifth main valve position, at which time the passages between the liquid inlet 120 and the first main valve port 141 and the second main valve port 142 are all closed, so that the control valve can be in a closed state.

[0111] Please refer to Figure 1 , Figure 2 , Figure 7-Figure 20In some embodiments, the control valve further comprises a plurality of main valve sealing grids 300, which are arranged in the first inner cavity 110 at intervals along the axial direction of the first piston 200 and are sealedly connected to the inner side wall of the first valve body 100, and are used to divide the first inner cavity 110 into a plurality of main valve chambers 111; the liquid inlet 120, the first main valve port 141, the second main valve port 142, the third main valve port 143, the fourth main valve port 144, the fifth main valve port 145, the sixth main valve port 146, the seventh main valve port 147 and the ninth main valve port 149 They are respectively communicated with different main valve chambers 111, and the liquid outlet 130 and the eighth main valve port 148 are communicated with the same main valve chamber 111; the main valve sealing grid 300 is arranged around the outer peripheral side of the first piston 200, and the main valve sealing grid 300 is configured to be able to be sealed and connected with the first piston 200 to isolate the main valve chambers 111 located on both sides of the main valve sealing grid 300; the main valve sealing grid 300 is also configured to be able to be spaced from the first piston 200 so that the main valve chambers 111 located on both sides of the main valve sealing grid 300 are communicated with each other.

[0112] In an embodiment of the present application, a plurality of main valve sealing grids 300 are provided to divide the first inner cavity 110 into a plurality of main valve chambers 111, and the plurality of main valve chambers 111 are respectively connected to different main valve ports, so that switching of different fluid circuits can be realized, thereby realizing switching of different functions of the control valve.

[0113] like Figure 3 As shown, in some embodiments, the first piston 200 includes a plurality of main valve water grooves 210 and a plurality of main valve sealing steps 220, the plurality of main valve water grooves 210 are arranged at intervals along the axial direction of the first piston 200, the plurality of main valve sealing steps 220 are arranged at intervals along the axial direction of the first piston 200, and a main valve water groove 210 is formed between two adjacent main valve sealing steps 220; when the main valve sealing grid 300 is sealed and connected to the main valve sealing step 220, the main valve sealing grid 300 isolates the main valve chambers 111 located on both sides of the main valve sealing grid 300; when the main valve sealing grid 300 and the main valve water groove 210 are arranged opposite to each other, the main valve water groove 210 is connected to the main valve chambers 111 located on both sides of the main valve sealing grid 300.

[0114] In the embodiment of the present application, by providing the first piston 200 with multiple main valve water passage grooves 210 and multiple main valve sealing steps 220 to cooperate with multiple main valve chambers 111 and multiple main valve ports, by moving the piston to different main valve positions, it is possible to achieve that when the main valve is in different positions, different main valve ports are connected through the corresponding main valve chambers 111 and the corresponding main valve water passage grooves 210, thereby achieving different water passing functions.

[0115] like Figure 3As shown, in some embodiments, the plurality of main valve water passage grooves 210 include at least two first water passage grooves 211 and at least two second water passage grooves 212, the at least two first water passage grooves 211 are arranged at intervals along the axial direction of the first piston 200, and the at least two second water passage grooves 212 are symmetrically arranged on both sides of the at least two first water passage grooves 211; the plurality of main valve sealing steps 220 include a first sealing step 221, at least two second sealing steps 222 and at least two third sealing steps 223, the first sealing step 221 is arranged between two adjacent first water passage grooves 211, and the at least two second sealing steps 222 are symmetrically arranged on the first sealing step 2 21; a first water groove 211 is formed between each second sealing step 222 and the first sealing step 221; at least two third sealing steps 223 are symmetrically arranged on both sides of the first sealing step 221, and along the axial direction of the first piston 200, the third sealing step 223 is located on the side of the second sealing step 222 away from the first sealing step 221; wherein, along the axial direction of the first piston 200, the size of the first water groove 211 is larger than the size of the second water groove 212, the size of the first sealing step 221 is larger than the size of the second sealing step 222, and the size of the first sealing step 221 is larger than the size of the third sealing step 223.

[0116] In the embodiment of the present application, there are preferably two first water channels 211 and two second water channels 212. The two first water channels 211 are symmetrically arranged on both sides of the first sealing step 221, and the two second water channels 212 are symmetrically arranged on both sides of the first sealing step 221 and are located on the side of the first water channel 211 away from the first sealing step 221. At the same time, the plurality of main valve sealing grids 300 are also symmetrically arranged with the mid-perpendicular line of the connecting line of the second main valve port 142 and the third main valve port 143 as the symmetry axis. At this time, the symmetrical arrangement of the six main valve ports from the first main valve port 141 to the sixth main valve port 146 can be realized, which is convenient for realizing the switching of various water channels, and can reduce the moving path of the first piston 200 in the movement and switching of each main valve position, and correspondingly reduce the axial size of the first valve body 100 and the first piston 200, which is conducive to the miniaturization of the control valve, and thus more conducive to the use in a smaller space.

[0117] It should be noted that along the axial direction of the first piston 200, the size of the first water groove 211 is larger than the size of the second water groove 212. At this time, the larger size of the first water groove 211 is used to facilitate the water inlet to be connected to the first main valve port 141 and the third main valve port 143 at the same time, and the water injection port to be connected to the second main valve port 142 and the fourth main valve port 144 at the same time, so as to facilitate the realization of a larger water flow rate, thereby increasing the water supply of the first treatment tank 800 and the second treatment tank 900 in parallel, and facilitating the improvement of water treatment efficiency. The size of the first sealing step 221 is larger than the size of the second sealing step 222, and the size of the first sealing step 221 is larger than the size of the third sealing step 223. The size of the first sealing step 221 is larger, which is used to ensure that the passage between the larger-caliber liquid outlet 130 and the second main valve port 142 and the fourth main valve port 144 can be correspondingly shut off, so as to ensure the realization of the control valve function.

[0118] Please refer to Figure 1 , Figure 2 , Figure 7-Figure 20 In some embodiments, along the axial direction of the first piston 200, the first main valve port 141 and the third main valve port 143 are symmetrically arranged on both sides of the liquid inlet 120, the second main valve port 142 and the fourth main valve port 144 are symmetrically arranged on both sides of the liquid outlet 130, the third main valve port 143 and the second main valve port 142 are arranged between the liquid inlet 120 and the liquid outlet 130, the fifth main valve port 145 is arranged on the side of the first main valve port 141 away from the liquid inlet 120, and the sixth main valve port 146 is arranged on the side of the first main valve port 141 away from the liquid inlet 120. The valve port 146 is arranged on the side of the fourth main valve port 144 away from the liquid outlet 130; the ninth main valve port 149 is arranged between the fourth main valve port 144 and the sixth main valve port 146, and the ninth main valve port 149 is arranged on the side of the first piston 200 away from the sixth main valve port 146; the seventh main valve port 147 is arranged between the fifth main valve port 145 and the first main valve port 141, and the seventh main valve port 147 is arranged on the side of the first piston 200 away from the first main valve port 141.

[0119] In the embodiment of the present application, by arranging the first main valve port 141 and the third main valve port 143 symmetrically on both sides of the liquid inlet 120, and the second main valve port 142 and the fourth main valve port 144 symmetrically on both sides of the liquid outlet 130, it is more conducive to realizing the simultaneous injection of water into the first main valve port 141 and the third main valve port 143, and the simultaneous discharge of water from the second main valve port 142 and the fourth main valve port 144. While ensuring that the first treatment tank 800 and the second treatment tank 900 can be supplied with water in parallel, the stroke of the first piston 200 is effectively shortened, which is conducive to reducing the size of the first piston 200 and the first valve body 100, improving the compactness of the structure of the control valve, and is more conducive to the miniaturization of the volume of the control valve.

[0120] It should be noted that the first valve body 100 , the first piston 200 and the main valve sealing grid 300 together form a main valve structure, and the main valve may have all or at least some of the technical features described in the above embodiments.

[0121] Please refer to Figure 1 , Figure 4-Figure 20 In some embodiments, the control valve further includes a second valve body 400, a second piston 500 and a jet device 700. The second valve body 400 has a second inner cavity 410, a first auxiliary valve port 441, a second auxiliary valve port 442, a third auxiliary valve port 443 and a salt port 420. The first auxiliary valve port 441 is communicated with the eighth main valve port 148, and the salt port 420 is used to communicate with a salt box (not shown in the figure); the second piston 500 is disposed in the second inner cavity 410 and is configured to be able to move to the first auxiliary valve port in the second inner cavity 410. When the second piston 500 is in the first secondary valve position, in the second inner cavity 410, the passage between the first secondary valve port 441 and the second secondary valve port 442, the passage between the first secondary valve port 441 and the salt port 420, and the passage between the third secondary valve port 443 and the salt port 420 are all opened; the jet device 700 has a jet inlet 710 and a nozzle port 720 that are connected, the jet inlet 710 is configured to be able to communicate with the second secondary valve port 442, and the nozzle port 720 is configured to be able to communicate with the third secondary valve port 443. The jet device 700 also has a siphon port 740, which is connected to the jet inlet 710 and the nozzle port 720.

[0122] In the embodiment of the present application, the second valve body 400 and the second piston 500 are used to form a secondary valve. By setting the second piston 500 to be movable in the second inner cavity 410, the switching of various valve positions of the secondary valve can be realized. The second piston 500 can be connected to a driving device (such as a motor) so that it can move in the second inner cavity 410 under the drive of the driving device to realize the switching of the valve position. The outer peripheral surface of the second piston 500 is sealed and connected to the inner wall of the second valve body 400 (the inner wall is used to enclose the second inner cavity 410). When located at different valve positions, the second piston 500 can open and close different passages in the second inner cavity 410.

[0123] See also Fig. 9 , Fig. 9The diagram shows the state when the first piston 200 is located at the first main valve position and the second piston 500 is located at the first auxiliary valve position. In this state, the control valve can realize the parallel water supply of the first treatment tank 800 and the second treatment tank 900 in the water treatment equipment, and can realize the water injection into the salt tank. Specifically, the raw water enters the first inner cavity 110 from the liquid inlet 120 of the first valve body 100, one way is softened through the first treatment tank 800 from the first main valve port 141 of the first valve body 100, and flows into the first inner cavity 110 through the second main valve port 142; the other way is softened through the second treatment tank 900 from the second main valve port 142, and flows into the first inner cavity 110 through the fourth main valve port 144. At this time, a part of the soft water reaches the liquid outlet 130 for water supply, and the other part of the soft water enters the first auxiliary valve port 441 through the eighth main valve port 148 and the first flow channel 150. The soft water entering the second inner cavity 410 from the first sub-valve port 441 is divided into three streams, one stream flows directly to the salt port 420, the second stream flows to the second sub-valve port 442, flows through the eighth flow channel 470 to the jet device 700, and then enters the third sub-valve port 443 through the jet inlet 710 and the nozzle port 720 in turn, merges into the second inner cavity 410 and flows to the salt port 420, and the third stream flows from the siphon port 740 through the sixth flow channel 450 to the sixth sub-valve port 446 and finally reaches the salt port 420, and flows from the salt port 420 into the salt box, that is, water injection is achieved. It can be understood that at this time, the sub-valve is in a state of being able to inject water into the salt box.

[0124] Please refer again Figures 7 to 20 In some embodiments, the second valve body 400 also has one or more of a fourth sub-valve port 444, a fifth sub-valve port 445, a sixth sub-valve port 446, and a drain port 430; and the control valve also satisfies at least one of the following conditions: the fourth sub-valve port 444 is connected to the ninth main valve port 149; and / or, the fifth sub-valve port 445 is connected to the seventh main valve port 147; and / or, the sixth sub-valve port 446 is connected to the siphon port 740; and / or, when the second piston 500 is located in the first sub-valve position, in the second inner cavity 410, the passages among the first sub-valve port 441, the second sub-valve port 442, the third sub-valve port 443, the fourth sub-valve port 444, and the salt port 420 are opened, and the passages of the fifth sub-valve port 445, the sixth sub-valve port 446, and the drain port 430 are closed.

[0125] Through such an arrangement, in addition to realizing functions such as parallel water supply and water injection into the salt box, the control valve can also realize functions such as one of the first treatment tank 800 and the second treatment tank 900 supplies water while the other is on standby, one supplies water while the other absorbs salt from the salt box, one supplies water while the other backwashes, one supplies water while the other washes forward, bypasses and closes.

[0126] The specific selection can be based on the actual functional requirements of the control valve. For example, Fig.11As shown, when it is necessary to supply water to the first treatment tank 800 and absorb salt in the second treatment tank 900, the second valve body 400 also has a fourth sub-valve port 444, a fifth sub-valve port 445, a sixth sub-valve port 446 and a sewage outlet 430, and the above conditions are met. When only some of the above functions are required, it is sufficient to set the valve ports that realize the required functions. Which valve ports are required in different functions can be understood by reading the full text of this application and the drawings.

[0127] Please refer to Figure 8 , Fig.10 , Fig.14 , Fig.19 and Fig. 20 In some embodiments, the second piston 500 is also configured to be able to move to the second sub-valve position in the second inner cavity 410. When the second piston 500 is located at the second sub-valve position, in the second inner cavity 410, the passage between the first sub-valve port 441 and the second sub-valve port 442, and the passage between the third sub-valve port 443 and the fourth sub-valve port 444 are all opened, and the passage of the salt port 420, the passage of the fifth sub-valve port 445, the passage of the sixth sub-valve port 446 and the passage of the sewage outlet 430 are all closed.

[0128] In the embodiment of the present application, by setting the second auxiliary valve position of the second piston 500 in the second inner cavity 410, the first treatment tank 800 and the second treatment tank 900 can be connected in parallel to supply water, the first treatment tank 800 supplies water and the second treatment tank 900 is in standby, the first treatment tank 800 is in standby and the second treatment tank 900 supplies water, and the control valve is closed. It can be understood that at this time, the auxiliary valve composed of the second valve body 400 and the second piston 500 is in the closed position, and the first treatment tank 800 and the second treatment tank 900 are not connected to the salt box.

[0129] See also Figure 8 , Figure 8 In the illustrated embodiment, the first piston 200 is located at the first main valve position, the second piston 500 is located at the second auxiliary valve position, and the first treatment tank 800 and the second treatment tank 900 are supplied with water in parallel. Since the third flow channel 170 flowing from the fourth auxiliary valve port 444 to the ninth main valve port 149 is closed at the ninth main valve port 149, the water passage between the first valve body 100 and the second valve body 400 cannot flow, and thus the control valve is set to a state where only the first treatment tank 800 and the second treatment tank 900 are supplied with water in parallel.

[0130] See also Fig.10, the first piston 200 is located at the second main valve position, the second piston 500 is located at the second sub-valve position, the raw water enters the first inner cavity 110 from the liquid inlet 120 of the first valve body 100, flows through the first main valve port 141 and enters the first treatment tank 800 for softening treatment (the raw water enters the first treatment chamber 810 and is adsorbed by the resin for calcium and magnesium ions in hard water, and then flows out through the first central pipe 820), then flows back to the first inner cavity 110 through the second main valve port 142, and flows out from the liquid outlet 130 for water supply. It should be noted that in this process, the first piston 200 closes the third main valve port 143, the sixth main valve port 146, and the third main valve port 143, and the second piston 500 closes the fifth sub-valve port 445. Part of the soft water treated by the first treatment tank 800 directly enters the first inner cavity 110, and the other part flows to the sixth main valve 146 port through the fourth flow channel 180. Since the passage of the sixth main valve 146 port is in a closed state, this passage cannot flow, and the soft water will uniformly flow to the first inner cavity 110 through the second main valve port 142. Part of the soft water that enters the first inner cavity 110 through the second main valve port 142 flows out directly from the liquid outlet 130, and the other part flows out from the eighth main valve port 148 into the second flow channel 160, flows from the second flow channel 160 to the first sub-valve port 441, enters the second inner cavity 410 from the first sub-valve port 441, and then flows out from the second sub-valve port 442 into the eighth flow channel 470, flows from the seventh flow channel 460 to the third sub-valve port 443 after passing through the jet device 700, and then flows through the third flow channel 170 through the fourth sub-valve port 444, and then flows through the third flow channel 170. It flows back to the first inner cavity 110 from the ninth main valve port 149, flows into the second treatment tank 900 through the fourth main valve port 144, passes through the second treatment tank 900, passes through the fifth flow channel 190, enters the fifth main valve port 145, and then flows to the seventh main valve port 147, and flows to the fifth secondary valve port 445 through the first flow channel 150. Since the fifth secondary valve port 445 is closed, this path is blocked. Therefore, during this process, there is water in the second treatment tank 900, but it does not participate in softening the raw water and is in an inoperative state, that is, the second treatment tank 900 is in a standby state. Therefore, in this state, the control valve is set to supply water to the first treatment tank 800 and the second treatment tank 900 is in standby state.

[0131] See also Fig.14The first piston 200 is located at the third main valve position, the second piston 500 is located at the second sub-valve position, and the raw water enters the first inner cavity 110 from the liquid inlet 120 of the first valve body 100, and is first softened through the second treatment tank 900 from the third main valve port 143 of the first valve body 100 (the raw water enters the second treatment chamber 910 and is adsorbed by resin for calcium and magnesium ions in hard water, and then is discharged through the second center pipe 920), and then enters the first inner cavity 110 through the fourth main valve port 144, and then is discharged through the liquid outlet 130. During this process, the first piston 200 closes the second main valve port 142 and the fifth main valve port, the second piston 500 closes the fifth sub-valve port 445, and the soft water treated by the second treatment tank 900 enters the first inner cavity 110 through the fourth main valve port 144, wherein a stream of water flows out from the eighth main valve port 148 into the second flow channel 160, flows from the second flow channel 160 to the first sub-valve port 441, enters the second inner cavity 410 from the first sub-valve port 441, and then flows out through the second sub-valve port 442 into the eighth flow channel 470, and flows from the seventh flow channel 460 to the first after passing through the jet device 700. The water flows through the third auxiliary valve port 443, then flows through the third flow channel 170 through the fourth auxiliary valve port 444, and flows back to the first inner cavity 110 from the ninth main valve port 149, enters the fourth flow channel 180 through the sixth main valve port 146, and flows through the first treatment tank 800 into the first main valve port 141, and then flows to the seventh main valve port 147, and flows to the fifth auxiliary valve port 445 through the first flow channel 150. Since the fifth auxiliary valve port 445 is closed, this path is blocked. Therefore, during this process, there is water in the first treatment tank 800, but it does not participate in softening the raw water and is in an inoperative state, that is, the first treatment tank 800 is in a standby state. Therefore, in this state, the control valve is set to supply water from the second treatment tank 900 to the first treatment tank 800 for standby.

[0132] Optionally, in some embodiments, the jet device 700 includes a check portion 730, which is disposed at the nozzle port 720 to block the liquid flowing from the third sub-valve port 443 to the nozzle port 720. By providing the check portion 730, when water flows from the third sub-valve port 443 to the nozzle port 720 through the seventh flow channel 460, it is blocked by the check portion 730, further preventing the water from flowing in the reverse direction at the jet device 700.

[0133] Specifically, the check portion 730 may be a check ball. When water flows from the third sub-valve port 443 to the nozzle port 720 , the check ball may be pressed against the nozzle port 720 to block the nozzle port 720 and prevent reverse flow of water.

[0134] See also Fig.19, the first piston 200 is located at the fourth main valve position, the second piston 500 is located at the second sub-valve position, the second piston 500 closes the fifth sub-valve port 445, the raw water flows from the liquid inlet 120 through the first main valve port 141 and enters the first treatment tank 800, a part of the softened water in the first treatment tank 800 enters the first inner cavity 110 through the second main valve port 142, and then flows out from the third main valve port 143, a part of the water flowing out from the third main valve port 143 reaches the fifth valve port through the fifth channel and flows into the seventh main valve port 147 through the first channel into the fifth sub-valve port 445, because the fifth sub-valve port 445 is closed by the second piston 500, so this path is blocked; another part of the water flowing out from the third main valve port 143 enters the second treatment tank 900 , and enters the first inner cavity 110 through the fourth main valve port 144. Another part of the softened water in the first treatment tank 800 enters the first inner cavity 110 through the fourth flow channel 180, merges with the water entering from the fourth main valve port 144, and then flows into the third flow channel 170 through the ninth main valve port 149, and enters the second inner cavity 410 through the fourth sub-valve port 444, flows from the third sub-valve port 443 through the seventh flow channel 460 to reach the jet device 700. Since the jet device 700 is provided with a check portion 730 between the nozzle port 720 and the seventh flow channel 460, the seventh flow channel 460 is blocked and this path is blocked. Therefore, no water flows through the final liquid outlet 130. At this time, the flow path of the entire control valve is in a closed state, and the control valve is closed.

[0135] See also Fig. 20 , the first piston 200 is in the fifth main valve position, the second piston 500 is in the second main valve position, and the first piston 200 blocks the liquid inlet 120, so that water cannot flow into the control valve, thereby closing the control valve.

[0136] Please refer to Fig.11 and Fig.15 In some embodiments, the second piston 500 is also configured to be able to move to the third sub-valve position in the second inner cavity 410. When the second piston 500 is located at the third sub-valve position, in the second inner cavity 410, the passage between the first sub-valve port 441 and the second sub-valve port 442, the passage between the third sub-valve port 443 and the fourth sub-valve port 444, the passage between the salt port 420 and the sixth sub-valve port 446, and the passage between the fifth sub-valve port 445 and the sewage outlet 430 are all opened.

[0137] In the embodiment of the present application, by setting the third auxiliary valve position of the second piston 500 in the second inner cavity 410, functions such as the first treatment tank 800 supplies water and the second treatment tank 900 absorbs salt, and the first treatment tank 800 absorbs salt and the second treatment tank 900 supplies water can be realized.

[0138] See also Fig.11, the first piston 200 is located at the second main valve position, the second piston 500 is located at the third sub-valve position, the raw water enters the first inner cavity 110 from the liquid inlet 120 of the first valve body 100, first passes through the first treatment tank 800 for softening treatment from the first main valve port 141, then flows through the first inner cavity 110 through the second main valve port 142, and then flows out through the liquid outlet 130. In this process, a part of the soft water enters the first sub-valve port 441 through the eighth main valve port 148 and the second flow channel 160, and then enters the jet inlet 710 of the jet device 700 through the second sub-valve port 442 and the eighth flow channel 470. Water flows in the jet device 700 to produce a siphon effect, and the salt water in the salt box is sucked into the jet device 700 through the salt port 420, the sixth sub-valve port 446, and the sixth flow channel 450, and then mixed with water and ejected through the nozzle port 720 through the seventh flow channel 460 into the third sub-valve port 443, and flows from the fourth sub-valve port 444 through the third flow channel 170 into the ninth main valve port 149, and flows into the second treatment tank 900 through the fourth main valve port 144. After calcium and magnesium ion replacement, the wastewater passes through the fifth flow channel 190, the fifth main valve port 145, the seventh main valve port 147, the first flow channel 150, and the fifth sub-valve port 445, and is discharged from the sewage outlet 430. Thus, the first treatment tank 800 is supplied with water, and the second treatment tank 900 absorbs salt.

[0139] See also Fig.15 , the first piston 200 is located at the third main valve position, the second piston 500 is located at the third sub-valve position, the raw water enters the first inner cavity 110 from the liquid inlet 120 of the first valve body 100, first passes through the second treatment tank 900 for softening treatment from the third main valve port 143 of the first valve body 100, then flows through the first inner cavity 110 through the fourth main valve port 144, and then flows out through the liquid outlet 130. In this process, a part of the soft water enters the first sub-valve port 441 through the eighth main valve port 148 and the second flow channel 160, and then enters the jet inlet 710 of the jet device 700 through the second sub-valve port 442 and the eighth flow channel 470. Water flows in the jet device 700 to produce a siphon effect, and the salt water in the salt box is sucked into the jet device 700 through the salt port 420, the sixth sub-valve port 446, and the sixth flow channel 450, and then mixed with water and ejected through the nozzle port 720, and then through the seventh flow channel 460 to enter the third sub-valve port 443, and then from the fourth sub-valve port 444 and the third flow channel 170 to the ninth main valve port 149, and then through the sixth main valve port 146 and the fourth flow channel 180 to the first treatment tank 800. After calcium and magnesium ion replacement, the wastewater passes through the first main valve port 141, the seventh main valve port 147, the first flow channel 150, and the fifth sub-valve port 445, and then is discharged from the sewage outlet 430. Thus, the second treatment tank 900 is supplied with water, and the first treatment tank 800 absorbs salt.

[0140] Please refer to Fig.12 and Fig.16In some embodiments, the second piston 500 is also configured to be able to move to the fourth sub-valve position in the second inner cavity 410. When the second piston 500 is located at the fourth sub-valve position, in the second inner cavity 410, the passages between the first sub-valve port 441, the second sub-valve port 442, the third sub-valve port 443 and the fourth sub-valve port 444 are opened, the passage between the fifth sub-valve port 445 and the sewage outlet 430 is opened, and the passages of the salt port 420 and the sixth sub-valve port 446 are both closed.

[0141] In the embodiment of the present application, by setting the fourth sub-valve position of the second piston 500 in the second inner cavity 410, functions such as supplying water to the first treatment tank 800 and backwashing the second treatment tank 900, and backwashing the first treatment tank 800 and supplying water to the second treatment tank 900 can be achieved.

[0142] See also Fig.12 , the first piston 200 is located at the second main valve position, the second piston 500 is located at the fourth sub-valve position, the raw water enters the first inner cavity 110 from the liquid inlet 120 of the first valve body 100, first passes through the first treatment tank 800 for softening treatment from the first main valve port 141 of the first valve body 100, then flows through the first inner cavity 110 through the second main valve port 142, and then flows out through the liquid outlet 130. In this process, a part of the soft water enters the first sub-valve port 441 through the eighth main valve port 148 and the second flow channel 160, and is divided into two paths at the first sub-valve port 441. One path flows directly to the fourth sub-valve port 444, and the other path enters the jet inlet 710 of the jet device 700 through the second sub-valve port 442 and the eighth flow channel 470, and is ejected through the nozzle port 720 into the third sub-valve port 443, and converges at the fourth sub-valve port 444. Then, the wastewater flows from the fourth sub-valve port 444 through the third channel into the ninth main valve port 149, and then flows back into the second treatment tank 900 through the fourth main valve port 144 to wash the resin. The wastewater passes through the fifth flow channel 190, the fifth main valve port 145, the seventh main valve port 147, the first flow channel 150, and the fifth sub-valve port 445, and then is discharged from the sewage outlet 430. Thus, the first treatment tank 800 is supplied with water, and the second treatment tank 900 is backwashed.

[0143] See also Fig.16, the first piston 200 is located at the third main valve position, the second piston 500 is located at the fourth sub-valve position, the raw water enters the first inner cavity 110 from the liquid inlet 120 of the first valve body 100, first passes through the second treatment tank 900 for softening treatment from the third main valve port 143 of the first valve body 100, then flows through the first inner cavity 110 through the fourth main valve port 144, and then flows out through the liquid outlet 130. In this process, a part of the soft water enters the first sub-valve port 441 through the eighth main valve port 148 and the second flow channel 160, and is divided into two paths at the first sub-valve port 441. One path flows directly to the fourth sub-valve port 444, and the other path enters the jet inlet 710 of the jet device 700 through the second sub-valve port 442 and the eighth flow channel 470, and is ejected through the nozzle port 720 into the third sub-valve port 443, and converges at the fourth sub-valve port 444. Then, the wastewater flows from the fourth sub-valve port 444 through the third flow channel 170 into the ninth main valve port 149, and flows back into the first treatment tank 800 through the sixth main valve port 146 and the fourth flow channel 180 to wash the resin. The wastewater passes through the first main valve port 141, the seventh main valve port 147, the first flow channel 150, and the fifth sub-valve port 445, and is discharged from the sewage outlet 430. Thus, the second treatment tank 900 is supplied with water, and the first treatment tank 800 is backwashed.

[0144] Please refer to Fig.13 and Fig.17 In some embodiments, the second piston 500 is also configured to be able to move to the fifth sub-valve position in the second inner cavity 410. When the second piston 500 is located at the fifth sub-valve position, in the second inner cavity 410, the passage between the first sub-valve port 441, the second sub-valve port 442 and the fifth sub-valve port 445 is opened, the passage between the third sub-valve port 443, the fourth sub-valve port 444 and the sewage outlet 430 is opened, and the passage of the salt port 420 and the passage of the sixth sub-valve port 446 are both closed.

[0145] In the embodiment of the present application, by setting the fifth auxiliary valve position of the second piston 500 in the second inner cavity 410, functions such as supplying water to the first treatment tank 800 and washing the second treatment tank 900, and washing the first treatment tank 800 and supplying water to the second treatment tank 900 can be achieved.

[0146] See also Fig.13, the first piston 200 is located at the second main valve position, the second piston 500 is located at the fifth sub-valve position, the raw water enters the first inner cavity 110 from the liquid inlet 120 of the first valve body 100, first passes through the first treatment tank 800 for softening treatment from the first main valve port 141 of the first valve body 100, then flows through the first inner cavity 110 through the second main valve port 142, and then flows out through the liquid outlet 130. In this process, a part of the soft water enters the first sub-valve port 441 through the eighth main valve port 148 and the second flow channel 160, flows to the fifth sub-valve port 445, and then flows into the second treatment tank 900 in a positive direction through the first flow channel 150, the seventh main valve port 147, the fifth main valve port 145, and the fifth flow channel 190 in sequence to wash the resin, and the waste water passes through the fourth main valve port 144, the ninth main valve port 149, the third flow channel 170, the fourth sub-valve port 444, and the flow passage 530 of the second piston 500, and then is discharged from the sewage outlet 430. Thereby, the first treatment tank 800 can supply water and the second treatment tank 900 can perform positive washing.

[0147] See also Fig.17 , the first piston 200 is located at the third main valve position, the second piston 500 is located at the fifth sub-valve position, the raw water enters the first inner cavity 110 from the liquid inlet 120 of the first valve body 100, first passes through the second treatment tank 900 for softening treatment from the third main valve port 143 of the first valve body 100, then flows through the first inner cavity 110 through the fourth main valve port 144, and then flows out through the liquid outlet 130. In this process, a part of the soft water enters the first sub-valve port 441 through the eighth main valve port 148 and the second flow channel 160, and then flows into the first treatment tank 800 in a positive direction through the fifth sub-valve port 445, the first flow channel 150, the seventh main valve port 147, and the first main valve port 141 in sequence to wash the resin, and the waste water passes through the fourth flow channel 180, the sixth main valve 146 port, the ninth main valve port 149, the third flow channel 170, the fourth sub-valve port 444, and the flow passage 530 of the second piston 500, and then is discharged from the sewage outlet 430. Thereby, the first processing tank 800 performs positive washing and the second processing tank 900 performs water supply function.

[0148] See also Fig.18 In some embodiments, the second piston 500 is also configured to be able to move to the sixth sub-valve position in the second inner cavity 410. When the second piston 500 is located at the sixth sub-valve position, in the second inner cavity 410, the passage between the first sub-valve port 441, the second sub-valve port 442 and the fifth sub-valve port 445 is opened, the passage between the third sub-valve port 443 and the fourth sub-valve port 444 is opened, and the passage of the salt port 420, the passage of the sixth sub-valve port 446, and the passage of the sewage outlet 430 are all closed.

[0149] In the embodiment of the present application, by setting the sixth auxiliary valve position of the second piston 500 in the second inner cavity 410, the bypass function of the control valve can be realized.

[0150] Specifically, Fig.18 After the raw water enters the first inner cavity 110 from the liquid inlet 120 of the first valve body 100, it is divided into two paths. The first path is: the water flows directly from the seventh main valve port 147, the first flow channel 150, the fifth sub-valve port 445, the first sub-valve port 441, the second flow channel 160, the eighth main valve port 148, and then is discharged from the liquid outlet 130. The second route is: the water flows through the first main valve port 141, the first treatment tank 800, the second main valve port 142, the third main valve port 143, the second treatment tank 900, and the fourth main valve port 144 once and then enters the first inner cavity 110. In this process, water will also flow through the fifth flow channel 190 and the fourth flow channel 180, and finally converge at the seventh main valve port 147 and the ninth main valve port 149. Because there is pressure loss when the water flows through the treatment tank, no water actually passes through this process, so there is only the first water flow in the end, which realizes that the raw water enters from the liquid inlet 120 and directly flows out from the liquid outlet 130, and no water flows out of the sewage outlet 430 and the salt outlet 420, that is, the control valve is in the bypass state at this time.

[0151] It should be noted that the second piston 500 can move along its axial direction in the second inner cavity 410 to complete switching between the first auxiliary valve position, the second auxiliary valve position, the third auxiliary valve position, the fourth auxiliary valve position, the fifth auxiliary valve position, and the sixth auxiliary valve position. The first auxiliary valve position, the second auxiliary valve position, the third auxiliary valve position, the fourth auxiliary valve position, the fifth auxiliary valve position, and the sixth auxiliary valve position correspond to different positions in the second inner cavity 410 respectively.

[0152] Please refer to Figure 1 , Figure 4 , Figure 7 In some embodiments, the control valve further comprises a plurality of auxiliary valve sealing grids 600, which are arranged in the second inner cavity 410 at intervals along the axial direction of the second piston 500 and are sealed and connected to the inner side wall of the second valve body 400, and are used to divide the second inner cavity 410 into a plurality of auxiliary valve chambers 411; the first auxiliary valve port 441 and the second auxiliary valve port 442 are connected to the same auxiliary valve chamber 411, the third auxiliary valve port 443 and the fourth auxiliary valve port 444 are connected to the same auxiliary valve chamber 411, and the fifth auxiliary valve port 445, The sixth auxiliary valve port 446, the salt port 420 and the sewage port 430 are respectively connected to different auxiliary valve chambers 411; the auxiliary valve sealing grid 600 is arranged around the outer peripheral side of the second piston 500, and the auxiliary valve sealing grid 600 is configured to be able to be sealed and connected with the second piston 500 to isolate the auxiliary valve chambers 411 located on both sides of the auxiliary valve sealing grid 600; the auxiliary valve sealing grid 600 is also configured to be able to be spaced from the second piston 500 so that the auxiliary valve chambers 411 located on both sides of the auxiliary valve sealing grid 600 are connected to each other.

[0153] It should be noted that in the embodiment of the present application, the main valve sealing grid 300 and the auxiliary valve sealing grid 600 may include a grid body and a sealing gasket, the grid body is annular, and its inner and outer peripheral surfaces are both provided with sealing grooves, and both are embedded with sealing gaskets. The sealing gasket on the outer peripheral surface of the main valve sealing grid 300 is sealed and connected to the inner side wall of the first valve body 100, and the sealing gasket on the inner peripheral surface of the main valve sealing grid 300 can be sealed and connected to the first piston 200. The sealing gasket on the outer peripheral surface of the auxiliary valve sealing grid 600 is sealed and connected to the inner side wall of the second valve body 400, and the sealing gasket on the inner peripheral surface can be sealed and connected to the second piston 500.

[0154] See also Figure 5 In some embodiments, the second piston 500 includes a plurality of auxiliary valve water grooves 510 and a plurality of auxiliary valve sealing steps 520. The plurality of auxiliary valve water grooves 510 are arranged at intervals along the axial direction of the second piston 500; the plurality of auxiliary valve sealing steps 520 are arranged at intervals along the axial direction of the second piston 500, and an auxiliary valve water groove 510 is formed between two adjacent auxiliary valve sealing steps 520. When the second piston 500 moves to the auxiliary valve sealing grid 600 and is sealed and connected with the auxiliary valve sealing step 520, the auxiliary valve sealing grid 600 isolates the auxiliary valve chambers 411 located on both sides of the auxiliary valve sealing grid 600; when the second piston 500 moves to the auxiliary valve sealing grid 600 and is arranged opposite to the auxiliary valve water groove 510, the auxiliary valve water groove 510 communicates with the auxiliary valve chambers 411 located on both sides of the auxiliary valve sealing grid 600.

[0155] Furthermore, in some embodiments, the second piston 500 has a flow passage 530 for connecting at least two auxiliary valve chambers 411. When the second piston 500 is in the fifth auxiliary valve position, the flow passage 530 connects the fourth auxiliary valve port 444 and the drain port 430.

[0156] Please refer to Figure 4 and Figure 5 In some embodiments, the second inner cavity 410 includes a secondary valve cavity 412 and a salt valve cavity 413 arranged along the axial direction of the second piston 500 and connected to each other. The second piston 500 includes a secondary valve piston 540 and a salt valve piston 550 arranged along the axial direction and connected to each other. The secondary valve piston 540 is disposed in the secondary valve cavity 412, and at least part of the salt valve piston 550 is disposed in the salt valve cavity 413. The first secondary valve port 441, the second secondary valve port 442, the third secondary valve port 443, the fourth secondary valve port 444, the fifth secondary valve port 445 and the sewage port 430 are correspondingly disposed in the secondary valve cavity 412, and the salt port 420 and the sixth secondary valve port 446 are correspondingly disposed in the salt valve cavity 413. Among them, the diameter of the salt valve cavity 413 is smaller than the diameter of the secondary valve cavity 412, and the diameter of the salt valve piston 550 is smaller than the diameter of the secondary valve piston 540.

[0157] Correspondingly, a water treatment device according to an embodiment of the present application includes a first treatment tank 800, a second treatment tank 900 and a control valve as in any of the aforementioned embodiments, wherein the first main valve port 141 of the control valve is connected to the first treatment chamber 810 of the first treatment tank 800, the second main valve port 142 of the control valve is connected to the first center pipe 820 of the first treatment tank 800, the third main valve port 143 of the control valve is connected to the second treatment chamber 910 of the second treatment tank 900, and the fourth main valve port 144 of the control valve is connected to the second center pipe 920 of the second treatment tank 900.

[0158] The water treatment equipment of the embodiment of the present application can be applied to application scenarios that require water softening treatment. By setting the first treatment tank 800 and the second treatment tank 900 for parallel water supply, it is possible to increase the water supply flux, thereby effectively improving the water treatment efficiency. In addition, it can also be applied to application scenarios that integrate softening and purification, and can simultaneously achieve the effect of providing soft water + clean water, providing a better choice for family whole-house water treatment solutions. The water treatment equipment can realize functions such as dual tanks in parallel for simultaneous processing, one for use and one for backup, and separate regeneration of dual tanks, without interfering with each other, and can achieve uninterrupted and continuous water supply. The water treatment equipment has a high degree of integration, can save space, and has lower costs; in addition, it has richer functions and is suitable for more usage scenarios.

[0159] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0160] The above is a detailed introduction to a control valve and water treatment equipment provided in the embodiments of the present application, and the principles and implementation methods of the present application are explained by using specific examples. The description of the above embodiments is only used to help understand the technical solution and its core idea of ​​the present application; ordinary technicians in this field should understand that: they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A control valve, characterized in that: include: A first valve body (100) having a first inner cavity (110), a liquid inlet (120), a liquid outlet (130), a first main valve port (141), a second main valve port (142), a third main valve port (143) and a fourth main valve port (144), wherein the first main valve port (141) is used to connect to a first processing chamber (810) of a first processing tank (800), the second main valve port (142) is used to connect to a first central tube (820) of the first processing tank (800), the third main valve port (143) is used to connect to a second processing chamber (910) of a second processing tank (900), and the fourth main valve port (144) is used to connect to a second central tube (920) of the second processing tank (900); The first piston (200) is arranged in the first inner cavity (110) and is arranged to be able to move to a first main valve position in the first inner cavity (110). When the first piston (200) is located at the first main valve position, in the first inner cavity (110), the passage between the liquid inlet (120) and the first main valve port (141) and the third main valve port (143), and the passage between the second main valve port (142) and the fourth main valve port (144) and the liquid outlet (130) are all opened.

2. The control valve according to claim 1, characterized in that: The first valve body (100) further comprises at least one of a fifth main valve port (145), a sixth main valve port (146), a seventh main valve port (147), an eighth main valve port (148), and a ninth main valve port (149), and the control valve further satisfies at least one of the following conditions: The fifth main valve port (145) is in communication with the third main valve port (143); The sixth main valve (146) port is in communication with the second main valve port (142); When the first piston (200) is located at the first main valve position, the passage between the liquid inlet (120), the first main valve port (141), and the third main valve port (143) is opened, the passage between the second main valve port (142), the fourth main valve port (144), the eighth main valve port (148) and the liquid outlet (130) is opened, and the passage of the fifth main valve port (145), the passage of the sixth main valve port (146), the passage of the seventh main valve port (147), and the passage of the ninth main valve port (149) are all closed.

3. The control valve according to claim 2, characterized in that: The first piston (200) is also configured to be able to move to a second main valve position in the first inner cavity (110). When the first piston (200) is located at the second main valve position, in the first inner cavity (110), the passage between the liquid inlet (120) and the first main valve port (141) is opened, the passage between the second main valve port (142), the eighth main valve port (148) and the liquid outlet (130) is opened, the passage between the fifth main valve port (145) and the seventh main valve port (147) is opened, the passage between the fourth main valve port (144) and the ninth main valve port (149) is opened, and the passage of the third main valve port (143) and the passage of the sixth main valve port (146) are both closed.

4. The control valve according to claim 2, characterized in that: The first piston (200) is also configured to be able to move to a third main valve position in the first inner cavity (110). When the first piston (200) is located at the third main valve position, in the first inner cavity (110), the passage between the liquid inlet (120) and the third main valve port (143) is opened, the passage between the fourth main valve port (144), the eighth main valve port (148) and the liquid outlet (130) is opened, the passage between the sixth main valve port (146) and the ninth main valve port (149) is opened, the passage between the first main valve port (141) and the seventh main valve port (147) is opened, and the passage of the second main valve port (142) and the passage of the fifth main valve port (145) are both closed.

5. The control valve according to claim 2, characterized in that: The first piston (200) is also configured to be able to move to a fourth main valve position in the first inner cavity (110). When the first piston (200) is located at the fourth main valve position, in the first inner cavity (110), the passage between the liquid inlet (120), the first main valve port (141), the fifth main valve port (145), and the seventh main valve port (147) is opened, the passage between the second main valve port (142) and the third main valve port (143) is opened, the passage between the fourth main valve port (144), the sixth main valve port (146), and the ninth main valve port (149) is opened, and the passage between the liquid outlet (130) and the eighth main valve port (148) is opened.

6. The control valve according to claim 2, characterized in that: The first piston (200) is also configured to be able to move to a fifth main valve position in the first inner cavity (110). When the first piston (200) is located at the fifth main valve position, in the first inner cavity (110), the passage of the liquid inlet (120) is closed, and the first main valve port (141), the second main valve port (142), the third main valve port (143), the fourth main valve port (144), the fifth main valve port (145), the sixth main valve port (146), the seventh main valve port (147), the eighth main valve port (148), the ninth main valve port (149) and the liquid outlet (130) are not connected to the liquid inlet (120).

7. The control valve according to claim 2, characterized in that: The control valve further comprises a plurality of main valve sealing grids (300), which are arranged in the first inner cavity (110) at intervals along the axial direction of the first piston (200) and are sealedly connected to the inner wall of the first valve body (100) for dividing the first inner cavity (110) into a plurality of main valve chambers (111); the liquid inlet (120), the first main valve port (141), the second main valve port (142), the third main valve port (143), the fourth main valve port (144), the fifth main valve port (145), the sixth main valve port (146), the seventh main valve port (147) and the ninth main valve port (149) are respectively connected to different main valve chambers (111), and the liquid outlet (130) and the eighth main valve port (148) are connected to the same main valve chamber (111); The main valve sealing grid (300) is arranged around the outer peripheral side of the first piston (200), and the main valve sealing grid (300) is arranged to be able to be sealed and connected to the first piston (200) to isolate the main valve chamber (111) located on both sides of the main valve sealing grid (300); The main valve sealing grid (300) is also configured to be spaced apart from the first piston (200) so that the main valve chambers (111) located on both sides of the main valve sealing grid (300) are in communication with each other.

8. The control valve according to claim 7, characterized in that: The first piston (200) comprises: A plurality of main valve water channels (210) are arranged at intervals along the axial direction of the first piston (200); A plurality of main valve sealing steps (220) are arranged at intervals along the axial direction of the first piston (200), and a main valve water channel (210) is formed between two adjacent main valve sealing steps (220); When the main valve sealing grid (300) is sealed and connected to the main valve sealing step (220), the main valve sealing grid (300) isolates the main valve chamber (111) located on both sides of the main valve sealing grid (300); When the main valve sealing grid (300) and the main valve water passage groove (210) are arranged opposite to each other, the main valve water passage groove (210) is connected to the main valve chamber (111) located on both sides of the main valve sealing grid (300).

9. The control valve according to claim 8, characterized in that The plurality of main valve water channels (210) include at least two first water channels (211) and at least two second water channels (212), wherein the at least two first water channels (211) are arranged at intervals along the axial direction of the first piston (200), and the at least two second water channels (212) are symmetrically arranged on both sides of the at least two first water channels (211); The plurality of main valve sealing steps (220) include: A first sealing step (221) is arranged between two adjacent first water channels (211); At least two second sealing steps (222) are symmetrically arranged on both sides of the first sealing step (221); a first water channel (211) is formed between each of the second sealing steps (222) and the first sealing step (221); at least two third sealing steps (223) are symmetrically arranged on both sides of the first sealing step (221), and along the axial direction of the first piston (200), the third sealing steps (223) are located on a side of the second sealing step (222) away from the first sealing step (221); Wherein, along the axial direction of the first piston (200), the size of the first water groove (211) is larger than the size of the second water groove (212), the size of the first sealing step (221) is larger than the size of the second sealing step (222), and the size of the first sealing step (221) is larger than the size of the third sealing step (223).

10. The control valve according to claim 9, characterized in that Along the axial direction of the first piston (200), the first main valve port (141) and the third main valve port (143) are symmetrically arranged on both sides of the liquid inlet (120), the second main valve port (142) and the fourth main valve port (144) are symmetrically arranged on both sides of the liquid outlet (130), the third main valve port (143) and the second main valve port (142) are arranged between the liquid inlet (120) and the liquid outlet (130), the fifth main valve port (145) is arranged on the side of the first main valve port (141) away from the liquid inlet (120), and the sixth main valve port (146) is arranged on the side of the first main valve port (141) away from the liquid inlet (120). ) port is arranged on the side of the fourth main valve port (144) away from the liquid outlet (130); the ninth main valve port (149) is arranged between the fourth main valve port (144) and the sixth main valve port (146), and the ninth main valve port (149) is arranged on the side of the first piston (200) away from the sixth main valve (146) port; the seventh main valve port (147) is arranged between the fifth main valve port (145) and the first main valve port (141), and the seventh main valve port (147) is arranged on the side of the first piston (200) away from the first main valve port (141).

11. The control valve according to any one of claims 2 to 10, characterized in that: The control valve further comprises: The second valve body (400) comprises a second inner cavity (410), a first auxiliary valve port (441), a second auxiliary valve port (442), a third auxiliary valve port (443) and a salt port (420), wherein the first auxiliary valve port (441) is in communication with the eighth main valve port (148), and the salt port (420) is used to communicate with the salt box; a second piston (500) disposed in the second inner cavity (410) and configured to be movable to a first secondary valve position in the second inner cavity (410); when the second piston (500) is located at the first secondary valve position, in the second inner cavity (410), a passage between the first secondary valve port (441) and the second secondary valve port (442), a passage between the first secondary valve port (441) and the salt port (420), and a passage between the third secondary valve port (443) and the salt port (420) are all opened; The jet device (700) comprises a jet inlet (710) and a nozzle port (720) which are connected to each other. The jet inlet (710) is configured to be able to communicate with the second sub-valve port (442), and the nozzle port (720) is configured to be able to communicate with the third sub-valve port (443).

12. The control valve according to claim 11, characterized in that The jet device (700) further comprises a siphon port (740), wherein the siphon port (740) is in communication with the jet inlet (710) and the nozzle port (720); The second valve body (400) further comprises one or more of a fourth auxiliary valve port (444), a fifth auxiliary valve port (445), a sixth auxiliary valve port (446), and a sewage outlet (430); and the control valve further satisfies at least one of the following conditions: The fourth auxiliary valve port (444) is connected to the ninth main valve port (149); The fifth auxiliary valve port (445) is in communication with the seventh main valve port (147); The sixth sub-valve port (446) is in communication with the siphon port (740); When the second piston (500) is located at the first secondary valve position, in the second inner cavity (410), the passages among the first secondary valve port (441), the second secondary valve port (442), the third secondary valve port (443), the fourth secondary valve port (444), and the salt port (420) are opened, and the passages of the fifth secondary valve port (445), the sixth secondary valve port (446), and the sewage outlet (430) are closed.

13. The control valve according to claim 12, characterized in that The second piston (500) is also configured to be able to move to a second secondary valve position in the second inner cavity (410). When the second piston (500) is located at the second secondary valve position, in the second inner cavity (410), the passage between the first secondary valve port (441) and the second secondary valve port (442), and the passage between the third secondary valve port (443) and the fourth secondary valve port (444) are all opened, and the passage of the salt port (420), the passage of the fifth secondary valve port (445), the passage of the sixth secondary valve port (446) and the passage of the sewage outlet (430) are all closed.

14. The control valve according to claim 12, characterized in that The second piston (500) is also configured to be able to move to a third sub-valve position in the second inner cavity (410). When the second piston (500) is located at the third sub-valve position, in the second inner cavity (410), the passage between the first sub-valve port (441) and the second sub-valve port (442), the passage between the third sub-valve port (443) and the fourth sub-valve port (444), the passage between the salt port (420) and the sixth sub-valve port (446), and the passage between the fifth sub-valve port (445) and the sewage outlet (430) are all opened.

15. The control valve according to claim 12, characterized in that The second piston (500) is also configured to be able to move to a fourth sub-valve position in the second inner cavity (410). When the second piston (500) is located at the fourth sub-valve position, in the second inner cavity (410), the passages between the first sub-valve port (441), the second sub-valve port (442), the third sub-valve port (443) and the fourth sub-valve port (444) are opened, the passage between the fifth sub-valve port (445) and the sewage outlet (430) is opened, and the passages of the salt port (420) and the sixth sub-valve port (446) are both closed.

16. The control valve according to claim 12, characterized in that The second piston (500) is also configured to be able to move to the fifth sub-valve position in the second inner cavity (410). When the second piston (500) is located at the fifth sub-valve position, in the second inner cavity (410), the passage between the first sub-valve port (441), the second sub-valve port (442) and the fifth sub-valve port (445) is opened, the passage between the third sub-valve port (443), the fourth sub-valve port (444) and the sewage outlet (430) is opened, and the passage of the salt port (420) and the passage of the sixth sub-valve port (446) are both closed.

17. The control valve according to claim 12, characterized in that The second piston (500) is also configured to be able to move to a sixth sub-valve position in the second inner cavity (410). When the second piston (500) is located at the sixth sub-valve position, in the second inner cavity (410), the passage between the first sub-valve port (441), the second sub-valve port (442) and the fifth sub-valve port (445) is opened, the passage between the third sub-valve port (443) and the fourth sub-valve port (444) is opened, and the passage of the salt port (420), the passage of the sixth sub-valve port (446) and the passage of the sewage outlet (430) are all closed.

18. The control valve according to claim 12, characterized in that The control valve further comprises a plurality of auxiliary valve sealing grids (600), which are arranged in the second inner cavity (410) at intervals along the axial direction of the second piston (500) and are sealedly connected to the inner wall of the second valve body (400) for dividing the second inner cavity (410) into a plurality of auxiliary valve cavities (412) chambers (411); the first auxiliary valve port (441) and the second auxiliary valve port (442) are in communication with the same auxiliary valve cavity (412) chamber (411), the third auxiliary valve port (443) and the fourth auxiliary valve port (444) are in communication with the same auxiliary valve cavity (412) chamber (411), and the fifth auxiliary valve port (445), the sixth auxiliary valve port (446), the salt port (420) and the sewage port (430) are in communication with different auxiliary valve cavities (412) chambers (411) respectively; The auxiliary valve sealing grid (600) is arranged around the outer peripheral side of the second piston (500), and the auxiliary valve sealing grid (600) is arranged to be able to be sealed and connected with the second piston (500) to isolate the auxiliary valve chamber (412) chamber (411) located on both sides of the auxiliary valve sealing grid (600); The auxiliary valve sealing grid (600) is also configured to be spaced apart from the second piston (500) so that the auxiliary valve chambers (412) (411) located on both sides of the auxiliary valve sealing grid (600) are connected to each other.

19. The control valve according to claim 18, characterized in that The second piston (500) comprises: A plurality of auxiliary valve water channels (510) are arranged at intervals along the axial direction of the second piston (500); A plurality of auxiliary valve sealing steps (520) are arranged at intervals along the axial direction of the second piston (500), and an auxiliary valve water channel (510) is formed between two adjacent auxiliary valve sealing steps (520); When the auxiliary valve sealing grid (600) is sealed and connected to the auxiliary valve sealing step (520), the auxiliary valve sealing grid (600) isolates the auxiliary valve chamber (412) chamber (411) located on both sides of the auxiliary valve sealing grid (600); When the auxiliary valve sealing grid (600) and the auxiliary valve water passage groove (510) are arranged opposite to each other, the auxiliary valve water passage groove (510) is connected to the auxiliary valve chamber (412) (411) located on both sides of the auxiliary valve sealing grid (600).

20. The control valve according to claim 18, characterized in that The second piston (500) has a flow passage (530), and the flow passage (530) is used to connect at least two of the auxiliary valve chambers (412) (411).

21. The control valve according to claim 12, characterized in that The second inner cavity (410) comprises a secondary valve cavity (412) and a salt valve cavity (413) which are arranged along the axial direction of the second piston (500) and are interconnected, the second piston (500) comprises a secondary valve piston (540) and a salt valve piston (550) which are arranged along the axial direction and are interconnected, the secondary valve piston (540) is arranged in the secondary valve cavity (412), and at least a part of the salt valve piston (550) is arranged in the salt valve cavity (413); The first auxiliary valve port (441), the second auxiliary valve port (442), the third auxiliary valve port (443), the fourth auxiliary valve port (444), the fifth auxiliary valve port (445) and the sewage outlet (430) are correspondingly arranged in the auxiliary valve chamber (412), and the salt port (420) and the sixth auxiliary valve port (446) are correspondingly arranged in the salt valve chamber (413).

22. The control valve according to claim 11, characterized in that The jet device (700) comprises a check portion (730), which is arranged at the nozzle opening (720) and is used to block the liquid flowing from the third sub-valve opening (443) to the nozzle opening (720).

23. A water treatment device, characterized in that: It comprises a first processing tank (800), a second processing tank (900) and a control valve as described in any one of claims 1 to 22, wherein the first main valve port (141) of the control valve is connected to the first processing chamber (810) of the first processing tank (800), the second main valve port (142) of the control valve is connected to the first center pipe (820) of the first processing tank (800), the third main valve port (143) of the control valve is connected to the second processing chamber (910) of the second processing tank (900), and the fourth main valve port (144) of the control valve is connected to the second center pipe (920) of the second processing tank (900).

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