Soft water valve

Abstract

The soft water valve comprises a valve shell, a driving mechanism and a valve element, the valve shell is provided with a valve cavity, at least two independent channels are formed in the valve shell, and the valve element is movably arranged in the channels; the valve shell is provided with a raw water pipe, a soft water pipe, a raw water outlet, a soft water inlet, a salt absorption water injection port and a waste water port, the raw water pipe is normally communicated with the valve cavity, the soft water pipe is communicated with the soft water inlet, and the raw water outlet is communicated with the soft water inlet through a resin tank; one channel is communicated with the salt absorption water injection port, and the channel is communicated with the soft water inlet; at least one of the other channels is communicated with the raw water outlet; and the wastewater port is communicated with one channel. Through the position of the valve element in the channel, the soft water valve is switched among an operation water production mode, a flushing mode, a salt absorption regeneration mode and a water supplementing mode. According to the soft water valve, the size of each water path can be adjusted at will according to requirements, the requirement for salt absorption regeneration flow can be met, and the requirement for large flux of soft water production can also be met.

Description

Technical Field

[0001] The present invention belongs to the technical field of water treatment equipment, and in particular relates to a soft water valve. Background Art

[0002] A soft water valve is a core component of softening water treatment equipment, controlling the switching of water flow direction to achieve functions such as water production, backwashing, salt absorption and slow washing, and water replenishment. Existing soft water valve spools are divided into ceramic spools and plunger spools. For example, CN202410230651.3 discloses a soft water valve with a valve seat provided with a rotor and a stator. Each rotor and stator is divided into a number of fan-shaped through-holes. A motor drives the rotor to rotate, and the through-holes on the rotor overlap and connect with the through-holes on the stator, thereby switching the water path and achieving functions such as water production, salt absorption, backwashing, and water replenishment. To meet the multiple functions of the soft water valve, the rotor is divided into a number of through-holes. The through-holes are used for water flow, and the cross-sectional size of the through-holes determines the flow rate. However, due to the complex water path switching relationship of the ceramic valve core, the rotor is usually designed to be smaller to facilitate installation and rotation. Therefore, when the soft water valve has multiple functions, the larger the number of through-holes, the smaller the cross-sectional area of the through-holes, resulting in a smaller flow rate of the soft water valve.

[0003] The soft water valve with a plunger valve core has a valve hole set on the valve housing, and a valve core is installed in the valve hole. The valve hole is connected to several water inlet holes on the valve housing, and the valve core controls the connection and disconnection of each water inlet hole and the valve hole to realize water path switching. However, the soft water valve has different flow requirements in functional modes such as water production and salt absorption slow washing. For example, in the water production function mode, a moderate or large flow rate is required to meet the water demand; in the salt absorption slow washing function mode, a small flow rate is required to ensure that the brine and the resin are in full contact for ion exchange. However, in order to comprehensively meet the needs of water production and salt absorption slow washing, the cross-sectional area of the valve hole of the existing soft water valve with a plunger valve core is small, resulting in a small soft water flux. Summary of the Invention

[0004] The object of the present invention is to provide a soft water valve to solve the problem of small flow rate of existing soft water valves.

[0005] The soft water valve of the present invention can be realized by the following technical solutions:

[0006] A soft water valve comprises a valve housing, a drive mechanism, and a valve core. The valve housing has a valve cavity. At least two independent channels are formed inside the valve housing, the channels are connected to the valve cavity, the number of the valve cores matches the number of the channels, and the valve cores are movably disposed in the channels. The valve housing is provided with a raw water pipe, a soft water pipe, a raw water outlet, a soft water inlet, a salt absorption injection port, and a waste water port. The raw water pipe is in constant communication with the valve cavity, the soft water pipe is in communication with the soft water inlet, and the raw water outlet and the soft water inlet are connected via a resin tank.

[0007] One of the channels is connected to the salt absorption water injection port, and the channel is connected to the soft water inlet; among the remaining channels, at least one channel is connected to the raw water outlet; the wastewater outlet is connected to one of the channels;

[0008] The driving mechanism controls the movement of the valve core, and switches the soft water valve among a running water production mode, a flushing mode, a salt absorption regeneration mode and a water replenishment mode through the position of the valve core in the channel.

[0009] In one embodiment, the valve core includes at least one water inlet valve core and a salt absorption valve core; the salt absorption valve core controls the conduction between the channel and the soft water inlet, and the conduction between the channel and the salt absorption water injection port; one of the water inlet valve cores controls the conduction between the channel and the wastewater port.

[0010] In one embodiment, three independent channels are formed inside the valve housing, and the channels include a water inlet channel, a salt absorption channel and a backwash channel. The salt absorption water injection port is connected to the salt absorption channel, and the wastewater port is connected to the water inlet channel; two water inlet valve cores are provided, one of which is movably provided in the water inlet channel, and the other water inlet valve core is movably provided in the backwash channel. The salt absorption valve core is movably provided in the salt absorption channel, and the water inlet valve core controls the conduction between the backwash channel and the soft water inlet.

[0011] In one embodiment, the salt absorption valve core includes a first pull rod and a plug body, the plug body has a hollow channel, a water inlet and a water outlet are opened on the plug body, the water inlet and the water outlet are both connected to the hollow channel, and a plurality of sealing parts are provided on the plug body, and the position of the plug body in the channel is used to control the cooperation between the sealing parts and the channel.

[0012] In one embodiment, a venturi tube is provided in the hollow channel, the venturi tube has a water inlet, a suction port and a water outlet, the plug body is provided with a brine inlet, the suction port is opposite to the brine inlet, the water inlet is connected to the water inlet, and the water outlet is connected to the water outlet.

[0013] In one embodiment, the water inlet valve core includes a second pull rod and a piston, the second pull rod is provided with a water groove, and the piston is located at the end of the second pull rod. By controlling the position of the piston in the water inlet channel and the backwash channel, the switching of the soft water valve operation mode and the backwash mode is achieved.

[0014] In one embodiment, the water inlet channel includes a first water inlet channel and a second water inlet channel, the wastewater port is connected to the second water inlet channel, a through hole is provided at the connection between the first water inlet channel and the second water inlet channel, the through hole is connected to the raw water outlet, and the piston is sealed with the second water inlet channel.

[0015] In one embodiment, the salt absorption channel includes a brine channel and a water-stop channel, the salt absorption water inlet is connected to the brine channel, the end of the plug body has a water-stop portion, the water-stop portion is sealed with the water-stop channel, the sealing portion is located between the water inlet and the water outlet, and the water-stop channel is connected to the soft water inlet or the soft water pipe.

[0016] In one embodiment, the valve housing is provided with a valve cover, the valve cavity has an opening, the valve cover blocks the opening, the valve cover is provided with a plurality of through-holes, the valve core passes through the through-holes, and the through-holes and the channel are located on the same horizontal line.

[0017] In one embodiment, the driving mechanism includes at least one power unit, which provides power to drive the valve core to move.

[0018] Compared with the prior art, the water softening valve of the present invention has the following advantages: the valve housing has at least two independent channels, one of which is connected to the salt absorption water injection port and can be used to independently adjust the salt absorption flow rate in the salt absorption regeneration mode; at least one of the remaining channels is connected to the raw water outlet, and raw water can flow from the valve cavity into this channel and then enter the resin tank from the raw water outlet. By adjusting the cross-sectional size of this channel, the flow rate of raw water entering the resin tank can be adjusted, thereby adjusting the flux of soft water produced by the resin tank and achieving a high soft water flux. The water softening valve of the present invention can arbitrarily adjust the size of each water channel according to demand, thereby meeting both the demand for salt absorption regeneration flow rate and the demand for high soft water flux. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. The following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of a soft water valve provided by an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of a soft water valve provided by an embodiment of the present invention when viewed from above;

[0022] Figure 3 This is an exploded schematic diagram of a soft water valve provided by an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of a salt-absorbing valve core in a soft water valve provided by an embodiment of the present invention;

[0024] Figure 5 yes Figure 4 The exploded diagram of the salt absorption valve core is shown;

[0025] Figure 6 2. It is a schematic diagram of a soft water valve provided by an embodiment of the present invention from a top view;

[0026] Figure 7 yes Figure 6 The cross-sectional view along line AA shows the position of the water inlet valve core in the water inlet channel when the soft water valve is in the water production mode;

[0027] Figure 8 yes Figure 6 The cross-sectional view along line AA shows the position of the water inlet valve core in the water inlet channel when the soft water valve is in flushing mode;

[0028] Figure 9 The cross-sectional view along line AA shows the position of the water inlet valve core in the water inlet channel in the water softener valve in the salt absorption regeneration and water replenishment mode;

[0029] Figure 10 yes Figure 6 The cross-sectional view along line BB shows that the soft water valve is provided with two channels. In the water production mode, the salt absorption valve core is located in the salt absorption channel.

[0030] Figure 11 yes Figure 6 The cross-sectional view along line BB shows that the soft water valve is provided with two channels. In the flushing mode, the salt absorption valve core is located in the salt absorption channel.

[0031] Figure 12 yes Figure 6 The cross-sectional view along line CC shows that the soft water valve is provided with three channels. In the operating water production mode, the position of the water inlet valve core in the backwash channel;

[0032] Figure 13 yes Figure 6 The cross-sectional view along line CC shows that the soft water valve is provided with three channels. In the backwash mode, the soft water valve has the position of the water inlet valve core in the backwash channel.

[0033] Figure 14 yes Figure 6 The cross-sectional view along line BB shows the soft water valve is provided with three channels. In the water production and backwash modes, the salt absorption valve core is positioned in the salt absorption channel.

[0034] Figure 15 yes Figure 6 The cross-sectional view along line CC shows that the soft water valve is provided with three channels. In the salt absorption regeneration and water replenishment modes, the position of the water inlet valve core in the backwash channel;

[0035] Figure 16 yes Figure 6 The cross-sectional view along line BB shows that the soft water valve is provided with three channels. In the salt absorption regeneration mode, the salt absorption valve core is positioned in the salt absorption channel;

[0036] Figure 17 yes Figure 6 The cross-sectional view along line BB shows that the soft water valve is provided with three channels. In the water replenishment mode, the salt absorption valve core is positioned in the salt absorption channel.

[0037] Indications in the figure: 1. Valve housing; 11. Valve cavity; 121. Water inlet channel; 1211. First water inlet channel; 1212. Second water inlet channel; 1213. Through hole; 122. Salt absorption channel; 1221. Salt water channel; 1222. Water stop channel; 123. Backwash channel; 13. Raw water pipe; 14. Soft water pipe; 15. Raw water outlet; 16. Soft water inlet; 17. Salt absorption injection port; 18. Wastewater port; 19. Valve cover; 191. Perforation; 2. Valve core; 21. Water inlet valve core; 211. Second pull rod; 2111. Water trough; 212. Piston; 22. Salt absorption valve core; 221. First pull rod; 222. Plug body; 2221. Hollow channel; 2222. Water inlet; 2223. Water outlet; 2224. Sealing part; 2225. Salt water inlet; 2226. Water stop; 223. Venturi tube; 2231. Water inlet; 2232. Suction port; 2233. Water outlet; 224. Grid; 3. Driving mechanism; 31. Power unit; 32. Fixed cover. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The described embodiments are part of the embodiments of the present invention, not all of the embodiments. In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense, for example, it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meaning of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0039] In water softening equipment, the resin in the resin tank absorbs calcium and magnesium ions from the raw water, reducing the water's hardness. After a period of adsorption, the resin reaches saturation and needs to be cleaned with brine to restore its ability to absorb calcium and magnesium ions. Therefore, in water softening equipment, a water softener valve controls the flow of raw water into the resin tank, controls the flow of brine into the resin tank, or controls the flow of raw water into the brine tank for replenishment.

[0040] like Figure 1-6 As shown, the present invention proposes a soft water valve, comprising a valve housing 1, a drive mechanism 3, and a valve core 2. The valve housing 1 has a valve cavity 11. At least two independent channels are formed inside the valve housing 1, and the channels are connected to the valve cavity 11. The number of valve cores 2 matches the number of channels. The valve cores 2 are movably disposed in the channels, and the drive mechanism 3 controls the movement of the valve cores 2. It is understood that when there are two channels, there are also two valve cores 2; when there are three channels, there are correspondingly three valve cores 2. A raw water pipe 13 is provided on the valve housing 1. The raw water pipe 13 is in constant communication with the valve cavity 11 and is connected to an external tap water supply port, allowing raw water to directly enter the valve cavity 11. The position of the valve cores 2 in their respective channels can then be controlled to control whether the raw water enters the channels. The valve housing 1 is also equipped with a soft water pipe 14, a raw water outlet 15, a soft water inlet 16, a salt absorption and injection port 17, and a waste water port 18. The raw water outlet 15 and the soft water inlet 17 are connected through the resin tank, thereby forming a water path inside the resin tank. The soft water pipe 14 is connected to the soft water inlet 16, and can be used to discharge soft water or transfer raw water to the resin tank.

[0041] One of the channels is connected to the brine injection port 17, which is also connected to the soft water inlet 16. This channel can be used to control the flow rate of brine entering the resin tank during brine regeneration, as well as the flow rate of water injected into the brine tank to dissolve or dilute brine. At least one of the remaining channels is connected to the raw water outlet 15, allowing raw water in the valve chamber 11 to flow through this channel and then into the resin tank from the raw water outlet 15. Softened water, after resin exchange, enters the soft water valve from the soft water inlet 16 and is finally discharged from the soft water pipe 14. A wastewater port 18 is connected to one of the channels. When the soft water valve is in backwash or brine regeneration mode, wastewater generated by flushing the resin enters this channel from the soft water inlet 16 and is finally discharged to the outside through the wastewater port 18. By controlling the position of the valve core 2 within the channel, the direction of water flow in each channel is controlled, thereby switching the soft water valve between operating water production mode, flushing mode, brine regeneration mode, and water replenishment mode.

[0042] The soft water valve of this embodiment sets up multiple independent channels, and the pipes through which the water flows when operating in water production and other working modes are independent of each other, so that the cross-sectional area of the water flow through each pipe can be adjusted individually, thereby changing the size of the water channel under different working modes, thereby meeting the flow rate or flow requirements corresponding to different working modes, and realizing the demand for large throughput of soft water production.

[0043] Specifically, in this embodiment, the valve core 2 includes at least one water inlet valve core 21 and a salt absorption valve core 22. One of the water inlet valve cores 21 controls the conduction between the channel and the wastewater port 18. When in the water production mode, the wastewater port 18 is closed, and the water in the channel cannot flow out of the wastewater port 18. When in the flushing mode, the wastewater port 18 is open, and the wastewater in the resin tank enters the channel from the soft water inlet 16 and is then discharged from the wastewater port 18. The salt absorption valve core 22 controls the conduction between the channel and the soft water inlet 16, as well as the conduction between the channel and the salt absorption injection port 17. By positioning the salt absorption valve core 22 in the corresponding channel, the conduction between the channel and the soft water inlet 16 is achieved, thereby controlling the flow of raw water or salt water into the resin tank through the channel. Similarly, the position of the salt absorption valve core 22 in the corresponding channel can control whether the salt absorption water injection port 17 is open. When the salt absorption water injection port 17 is open, the salt water in the salt box can be diverted into the channel or water can be added to the salt box.

[0044] like Figure 3-5 As shown, the salt absorption valve core 22 includes a first pull rod 221 and a plug body 222. The plug body 222 has a hollow channel 2221. The plug body 222 is provided with a water inlet 2222 and a water outlet 2223. Both the water inlet 2222 and the water outlet 2223 are connected to the hollow channel 2221. Raw water can flow into the hollow channel 2221 from the water inlet 2222 and then flow out of the channel from the water outlet 22223. The plug body 222 is provided with a plurality of sealing portions 2224. The position of the plug body 222 in the channel controls the coordination between the sealing portions 2224 and the channel. It can be understood that the movement of the salt absorption valve core 22 causes the sealing portions 2224 to be positioned differently in the channel, thereby controlling the communication between the channel and the soft water inlet 16, as well as the communication between the salt absorption water inlet 17 and the channel.

[0045] The water inlet valve core 21 includes a second pull rod 211 and a piston 212. The second pull rod 211 is provided with a water groove 2111, and raw water can flow through the water groove 2111. The piston 212 is located at the end of the second pull rod 211. The position of the piston 212 in the channel controls the conduction between the wastewater outlet 18 and the channel, as well as the conduction between the channel and the raw water outlet 15.

[0046] Specifically, such as Figure 6-11When the water softener valve of the present invention is provided with two independent channels, namely a water inlet channel 121 and a salt absorption channel 122, the valve core 2 is accordingly provided with a water inlet valve core 21 and a salt absorption valve core 22. The water inlet valve core 21 is disposed in the water inlet channel 121, with the wastewater port 18 communicating with the water inlet channel 121; the salt absorption valve core 22 is disposed in the salt absorption channel 122, with the salt absorption water inlet 17 communicating with the salt absorption channel 122.

[0047] When the soft water valve is in the water-making mode, the position of the water inlet valve core 21 in the water inlet channel 121 is as follows: Figure 7 As shown, the position of the salt absorption valve core 22 in the salt absorption channel 122 is as shown in FIG. Figure 10 As shown, the water inlet valve core 21 blocks the wastewater outlet 19, allowing water in the valve chamber 11 to flow through the water tank 2111, out of the raw water outlet 15, and finally into the resin tank. The salt absorption valve core 22 disconnects the salt absorption channel 122 from the soft water inlet 17, allowing soft water to flow out of the soft water inlet 17 and be output through the soft water pipe 14.

[0048] When the soft water valve is in the flushing mode, the position of the water inlet valve core 21 in the water inlet channel 121 is as follows: Figure 8 As shown, the position of the salt absorption valve core 22 in the salt absorption channel 122 is as shown in FIG. Figure 11 As shown. The wastewater outlet 18 is in a conducting state, and the piston 212 is sealed with the inner wall of the water inlet channel 121, so that the raw water cannot flow out of the water inlet channel 121. Two sealing parts 2224 are provided on the salt absorption valve core 22, and the sealing parts 2224 are sealed with the salt absorption channel 122, so that the raw water cannot flow into the salt tank from the salt absorption water injection port 17. The raw water in the valve chamber 11 enters the hollow channel 2221 from the water inlet 2222, then flows out from the water outlet 2223, and then flows into the resin tank from the soft water inlet 16. The wastewater generated after the raw water flushes the resin flows into the water inlet channel 121 from the raw water outlet 15, and is then discharged to the outside from the wastewater outlet 18. In this embodiment, a grid 224 is provided in the salt absorption channel 122. Two sealing portions 2224 seal against the grid 224. A water hole is provided in the grid 224, which corresponds to the position of the salt absorption water inlet 17. When the water hole is located between the two sealing portions 224, the salt absorption water inlet 17 is blocked. Furthermore, a solenoid valve can be provided at the salt absorption water inlet 17 to control its opening and closing.

[0049] When the soft water valve is in the salt absorption regeneration or water replenishment mode, the position of the water inlet valve core 21 in the water inlet channel 121 is as follows: Figure 9As shown, the piston 212 of the water inlet valve core 21 is sealed with the inner wall of the water inlet channel 121, so that raw water cannot flow out of the water inlet channel 121. The solenoid valve controls the salt absorption water injection port 17 to be in an open state. By controlling the position of the salt absorption valve core 22 in the salt absorption channel 122, the salt absorption water injection port 17 is controlled to be connected to the salt absorption channel 122, and the salt absorption channel 122 is also controlled to be connected to the soft water inlet 16. When the salt absorption regeneration is in progress, the salt water enters the channel from the salt absorption water injection port 17, and then enters the resin tank from the soft water inlet 16. The waste water generated by flushing the resin with salt water enters the water inlet channel 121 from the raw water outlet 15, and is finally discharged to the outside from the waste water outlet 18. When replenishing water, the front end of the salt intake valve core 22 seals against the salt intake channel 122, disconnecting the salt intake channel 122 from the soft water inlet 17. The water outlet 2223 of the salt intake valve core 22 communicates with the salt intake port 17, ensuring communication between the salt intake port 17 and the salt intake channel 122. Raw water in the valve chamber 11 flows from the water inlet 2222 into the hollow channel 2221, then out through the water outlet 2223, and finally into the salt tank through the salt intake port 17, thereby replenishing the salt tank.

[0050] At this time, by adjusting the pipe sizes of the water inlet channel 121 and the salt absorption channel 122, the sizes of the corresponding water channels can be adjusted, thereby meeting the needs of large flux of soft water production and small flow or slow flow rates in other modes.

[0051] Preferably, Figure 12-17 As shown, in the soft water valve of the present invention, three independent channels can also be formed inside the valve housing 1, including a water inlet channel 121, a salt absorption channel 122, and a backwash channel 123. The salt absorption water inlet 17 is connected to the salt absorption channel 122, and the wastewater outlet 17 is connected to the water inlet channel 121. Two water inlet valve cores 21 are provided, one of which is movably arranged in the water inlet channel 121, and the other water inlet valve core 21 is movably arranged in the backwash channel 123. The salt absorption valve core 22 is movably arranged in the salt absorption channel 122. The water inlet valve core 21 controls the connection and disconnection between the backwash channel 123 and the soft water inlet 16. By controlling the position of the piston 212 in the water inlet channel 121 and the backwash channel 123, the switching between the water production mode and the backwash mode of the soft water valve can be achieved. When the soft water valve is provided with three independent channels, the pipes through which the water flows for water production, salt absorption regeneration, water replenishment and backwashing can be separated independently, and the size of each water channel can be adjusted arbitrarily according to each mode to better meet the flow or flow rate requirements in different modes.

[0052] When the soft water equipment is in the water production mode, since the user directly uses soft water, the larger the soft water flux is, the better it can meet the needs of users for washing vegetables, washing clothes and other scenarios at the same time. The soft water valve of the present invention can adjust the size of the water inlet channel 121 to achieve a large flow of raw water into the resin tank, thereby meeting the demand for large soft water flux. However, when the resin is regenerated, it is necessary to slowly absorb salt water to ensure that sodium ions fully replace calcium and magnesium ions so that the resin can be effectively regenerated. At this time, it is only necessary to adjust the size of the salt absorption channel 122 according to the capacity of the resin tank to match the salt water flow with the capacity of the resin tank without affecting the demand for large water flux. During backwashing, the resin is flushed with raw water in the reverse direction to remove suspended matter and impurities trapped by the resin and prevent the resin from becoming hardened. Too small a flow rate can easily lead to incomplete flushing. The soft water valve of the present invention can adjust the size of the backwash channel 123 according to the capacity of the resin tank.

[0053] More specifically, Figure 5 As shown, when the soft water valve is provided with three channels, in order to make the function of the soft water valve more integrated, a venturi tube 223 is provided in the hollow channel 2221 of the salt absorption valve core 22, and the venturi tube 223 has a water inlet 2231, a suction port 2232 and a water outlet 2233, and the plug body 222 is provided with a brine inlet 2225, the suction port 2232 is opposite to the brine inlet 2225, the water inlet 2231 is connected with the water inlet 2222, and the water outlet 2233 is connected with the water outlet 2223. The position of the salt absorption valve core 22 in the salt absorption channel 122 is controlled so that the salt water inlet 2225 is directly opposite to the salt absorption water injection port 17. At this time, the salt water is sucked into the suction port 2232 and mixed with the raw water flowing in from the water inlet 2222. The mixed water flows out from the water outlet hole 2233 and finally flows out from the water outlet 2223. In this way, the water mixing function is integrated into the valve core, which greatly improves the control accuracy of the salt absorption flow rate and simplifies the design of the internal pipeline in the valve housing 1.

[0054] like Figure 7-9As shown, the water inlet channel 121 includes a first water inlet channel 1211 and a second water inlet channel 1212. The wastewater port 18 is connected to the second water inlet channel 1212. A through hole 1213 is formed at the junction of the first and second water inlet channels 1211 and 1212. The through hole 1213 is connected to the raw water outlet 15. The piston 212 is in a sealed engagement with the second water inlet channel 1212. When the soft water valve is in the operating water injection mode, the piston 212 is located in the second water inlet channel 1212. At this time, the wastewater port 18 is disconnected. The raw water flows through the water groove 2111 of the second pull rod 211, then flows out of the through hole 1213, and finally flows into the resin tank through the raw water outlet 15. When the soft water valve is in flushing mode, salt absorption regeneration mode or water replenishment mode, and the piston 212 is located in the first water inlet channel 1212, raw water cannot flow out of the through hole 1213, and the wastewater outlet 17 is in a conducting state. If there is wastewater in the resin tank, it can be discharged to the outside through the wastewater outlet 17.

[0055] like Figure 10 As shown, the salt absorption channel 122 includes a brine channel 1221 and a water stop channel 1222. The salt absorption water inlet 1221 is connected to the brine channel 1221. The end of the plug body 222 has a water stop portion 2226. The water stop portion 2226 is sealed with the water stop channel 1222. The sealing portion 2224 is located between the water inlet 2222 and the water outlet 2223. The water stop channel 1222 is connected to the soft water inlet 16 or the soft water pipe 14. When the soft water valve is in the water production or backwash mode, the water stop portion 2226 is located in the water stop channel 1222, and the salt absorption channel 122 is in a closed state. When the soft water valve is in the salt absorption regeneration mode, the water stop portion 2226 is located in the brine channel 1221. At this time, the entire salt absorption channel 122 is in a conductive state; the brine inlet 2225 is opposite to the salt absorption water injection port 17, and the brine is sucked into the suction port 2232 and mixed with the raw water flowing in from the water inlet 2222. The mixed water flows out from the water outlet hole 2233 and finally flows out from the water outlet 2223. After passing through the water stop channel 1222, it flows out from the soft water pipe 14 and finally enters the resin tank from the soft water inlet 16.

[0056] When the soft water valve of the present invention is provided with three independent channels, such as Figure 7 、 12 As shown in Figures 14 and 14, when the water production mode is in operation, the piston 212 of the water inlet valve core 22 is located in the second water inlet channel 1212, the waste water port 18 is in a blocked state, and the raw water in the valve chamber 11 flows out from the through hole 1213 and then enters the resin tank from the raw water outlet 15; the salt absorption channel 22 is in a closed state, and the backwash channel 123 is also in a closed state; at this time, soft water enters the valve housing 1 from the soft water inlet 16 and finally flows out from the soft water pipe 14.

[0057] like Figure 8 、 13As shown in Figures 14 and 15, in flushing mode, the piston 212 of the water inlet valve core 22 is located in the first water inlet channel 1212. At this time, the wastewater port 18 is open, and the first water inlet channel 1212 is closed. The salt absorption channel 22 is also closed, and the water inlet valve core 21 in the backwash channel 123 controls the backwash channel 123 to communicate with the soft water inlet 16. At this time, the raw water in the valve chamber 11 flows out of the backwash channel 123 and then flows into the resin tank through the soft water inlet 16, thereby flushing the resin. The generated wastewater flows out of the raw water outlet 15 and is finally discharged to the outside through the wastewater port 18.

[0058] like Figure 8 、 15 As shown in Figures 16 and 16, in the salt absorption regeneration mode, the piston 212 of the water inlet valve core 22 is located in the first water inlet channel 1212, and the wastewater port 18 is in an open state; the backwash channel 123 is in a closed state, and the salt absorption valve core 22 moves to make the brine inlet 2225 face the salt absorption water injection port 17. The brine flows out from the salt tank water injection port 17, is sucked in by the suction port 2232 and mixed with the raw water, and the mixed water flows out from the water outlet 2223 and finally flows into the resin tank from the soft water inlet 16. The mixed water flushes and regenerates the resin, and the generated wastewater flows into the water inlet channel 121 from the raw water outlet 15 and is finally discharged to the outside from the wastewater port 18.

[0059] like Figure 9 、 15 As shown in Figures 17 and 17, in the water replenishment mode, the piston 212 of the water inlet valve core 22 is located in the first water inlet channel 1212, and the backwash channel 123 is in a closed state; the salt absorption valve core 22 moves to the point where the brine inlet 2225 is misaligned with the salt absorption water injection port 17. At this time, the raw water in the valve cavity 11 enters the hollow channel 2221, flows out from the brine inlet 2225, and finally flows into the brine tank from the brine water injection port 17 to dissolve the solid salt in the brine tank or dilute the brine, etc.

[0060] like Figure 1-3As shown, in the soft water valve of the present invention, the valve housing 1 is further provided with a valve cover 19. The valve cavity 11 has an opening, and the valve cover 19 blocks the opening. The valve cover 19 is provided with a plurality of perforations 191, through which the valve cores 2 pass. The perforations 191 are located on the same horizontal line as the channel, thereby supporting and guiding the multiple valve cores 2 and preventing the valve cores from shaking and causing jamming. The drive mechanism 3 includes at least one power unit 31, which provides power to drive the valve cores 2 to move. When multiple power units 31 are provided, the number of power units 31 matches the number of valve cores 2. Each power unit 31 is connected to a corresponding valve core to independently control the movement of the corresponding valve core. When only one power unit 31 is provided, the drive mechanism 3 of this embodiment also includes a fixed cover 32, which is connected to the power unit 31. The multiple valve cores 2 are mounted on the fixed cover 32. The power unit 31 drives the fixed cover 32 to move, thereby driving the multiple valve cores 2 to move synchronously.

[0061] In this embodiment, preferably, one power unit 31 is used to drive multiple valve cores 2, which can reduce the manufacturing cost of the soft water valve and also reduce the volume of the entire soft water valve.

[0062] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. A person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention. These modifications and improvements fall within the scope of protection of the present invention. The scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A soft water valve, characterized in that: The valve comprises a valve housing, a drive mechanism, and a valve core. The valve housing has a valve cavity. At least two independent channels are formed inside the valve housing, and the channels are connected to the valve cavity. The number of the valve cores matches the number of the channels, and the valve cores are movably arranged in the channels. The valve housing is provided with a raw water pipe, a soft water pipe, a raw water outlet, a soft water inlet, a salt absorption injection port, and a waste water port. The raw water pipe is always connected to the valve cavity, the soft water pipe is connected to the soft water inlet, and the raw water outlet and the soft water inlet are connected via a resin tank. One of the channels is connected to the salt absorption water injection port, and the channel is connected to the soft water inlet; among the remaining channels, at least one channel is connected to the raw water outlet; the wastewater outlet is connected to one of the channels; The driving mechanism controls the movement of the valve core, and switches the soft water valve among a running water production mode, a flushing mode, a salt absorption regeneration mode and a water replenishment mode through the position of the valve core in the channel.

2. The soft water valve according to claim 1, characterized in that: The valve core includes at least one water inlet valve core and a salt absorption valve core; the salt absorption valve core controls the conduction between the channel and the soft water inlet, and the conduction between the channel and the salt absorption water injection port; One of the water inlet valve cores controls the conduction between the channel and the wastewater outlet.

3. The soft water valve according to claim 2, characterized in that: Three independent channels are formed inside the valve housing, including a water inlet channel, a salt absorption channel and a backwash channel. The salt absorption water injection port is connected to the salt absorption channel, and the wastewater port is connected to the water inlet channel; two water inlet valve cores are provided, one of which is movably provided in the water inlet channel, and the other water inlet valve core is movably provided in the backwash channel. The salt absorption valve core is movably provided in the salt absorption channel, and the water inlet valve core controls the conduction between the backwash channel and the soft water inlet.

4. The soft water valve according to claim 2 or 3, characterized in that: The salt absorption valve core includes a first pull rod and a plug body. The plug body has a hollow channel. A water inlet and a water outlet are opened on the plug body. The water inlet and the water outlet are both connected to the hollow channel. The plug body is provided with a plurality of sealing parts. The position of the plug body in the channel is used to control the cooperation between the sealing parts and the channel.

5. The soft water valve according to claim 4, characterized in that: A venturi tube is provided in the hollow channel, and the venturi tube has a water inlet, a suction port and a water outlet. The plug body is provided with a brine inlet, the suction port is opposite to the brine inlet, the water inlet is connected to the water inlet, and the water outlet is connected to the water outlet.

6. The soft water valve according to claim 3, characterized in that: The water inlet valve core includes a second pull rod and a piston. The second pull rod is provided with a water groove. The piston is located at the end of the second pull rod. By controlling the position of the piston in the water inlet channel and the backwash channel, the switching of the soft water valve operation mode and the backwash mode is realized.

7. The soft water valve according to claim 6, characterized in that: The water inlet channel includes a first water inlet channel and a second water inlet channel, the wastewater port is connected to the second water inlet channel, a through hole is opened at the connection between the first water inlet channel and the second water inlet channel, the through hole is connected to the raw water outlet, and the piston is sealed with the second water inlet channel.

8. The soft water valve according to claim 5, characterized in that: The salt absorption channel includes a brine channel and a water-stop channel. The salt absorption water inlet is connected to the brine channel. The end of the plug body has a water-stop portion. The water-stop portion is sealed with the water-stop channel. The sealing portion is located between the water inlet and the water outlet. The water-stop channel is connected to the soft water inlet or the soft water pipe.

9. The soft water valve according to claim 1, characterized in that: The valve housing is provided with a valve cover, the valve cavity has an opening, the valve cover blocks the opening, the valve cover is provided with a plurality of through-holes, the valve core passes through the through-holes, and the through-holes and the channel are located on the same horizontal line.

10. The soft water valve according to claim 1, characterized in that: The driving mechanism includes at least one power unit, which provides power to drive the valve core to move.

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