Water changing valve

Abstract

The utility model discloses a water changing valve, which relates to the technical field of valves, aims to solve the problem of single function of the existing water changing valve, and comprises a first three-way water changing valve arranged on a cold water pipeline and a second three-way water changing valve arranged on a hot water pipeline, the first three-way water changing valve and the second three-way water changing valve are each provided with a water inlet, a water outlet and a water outlet and further provided with a three-way ball valve used for controlling connection and disconnection of the water inlets, the water outlets and the water outlets, the first three-way water changing valve is communicated with the water outlets of the second three-way water changing valve through a water draining pipe, the three-way ball valves are connected with an actuator, and the actuator is in signal connection with an electric control board. The three-way ball valve is used for switching the water passing function, the water changing function and the anti-leakage and anti-freezing function, so that the hot water pipeline and the cold water pipeline are combined, and the water changing function of the cold water pipeline and the hot water pipeline can be considered.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and more specifically, to a water change valve. Background Technology

[0002] Household water systems are mainly divided into cold water circuits and hot water circuits. Single water change valves on the market can only change cold water or hot water in a single form. They cannot change both cold and hot water at the same time with a single water change valve, and they do not have anti-leakage and anti-freeze functions.

[0003] Therefore, how to solve the problem of the single function of existing water exchange valves is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a water exchange valve that combines hot water pipes and cold water pipes, so as to take into account the water exchange function of both cold water pipes and hot water pipes.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A water switching valve includes: a first three-way water switching valve installed in a cold water pipeline and a second three-way water switching valve installed in a hot water pipeline. Both the first and second three-way water switching valves are provided with an inlet, an outlet, and a drain outlet. A three-way ball valve is also provided for controlling the on / off state of the inlet, outlet, and drain outlet. The drain outlets of the first and second three-way water switching valves are connected through a drain pipe. The three-way ball valve is connected to an actuator, and the actuator is connected to an electronic control board. The three-way ball valve is used to switch between water supply function, water switching function, and leak-proof and freeze-proof function.

[0007] Preferably, the three-way ball valve includes a valve stem and a valve ball, and the valve stem engages with the valve ball and the actuator for transmission.

[0008] Preferably, the valve ball is provided with a valve ball gasket on its outside, and the valve stem is provided with an annular groove for installing a sealing ring.

[0009] Preferably, the first three-way water valve includes a first inlet pipe and a first outlet pipe sleeved outside the first inlet pipe. The first inlet pipe and the first outlet pipe are threadedly connected, and the first inlet pipe, the first outlet pipe, and the three-way ball valve are sealed together.

[0010] Preferably, the second three-way water valve includes a second inlet pipe and a second outlet pipe sleeved outside the second inlet pipe. The second inlet pipe and the second outlet pipe are threaded together, and the second inlet pipe, the second outlet pipe, and the three-way ball valve are sealed together.

[0011] Preferably, the ends of the first and second water outlet pipes are both nested with copper inserts, and the copper inserts are sealed to the first and second water outlet pipes.

[0012] Preferably, the first water outlet pipe is equipped with a temperature and pressure sensor that is connected to the electronic control board. The temperature and pressure sensor is used to measure the temperature and pressure inside the first water outlet pipe in real time, and the temperature and pressure sensor is sealed to the first water outlet pipe.

[0013] Preferably, a flow meter is installed in the first outlet pipe to measure the water flow rate in the first outlet pipe in real time. A flow sensor connected to the flow meter is installed on the first outlet pipe, and the flow sensor is connected to the electronic control board.

[0014] Preferably, the second water outlet pipe is equipped with a pressure sensor that is connected to the electronic control board. The pressure sensor is used to measure the pressure in the second water outlet pipe in real time, and the pressure sensor is sealed to the second water outlet pipe.

[0015] Preferably, the drain pipe is provided with at least two adapters, which are sealed to the drain ports of the first three-way water exchange valve and the second three-way water exchange valve.

[0016] The water-changing valve provided by this utility model includes a first three-way water-changing valve, a second three-way water-changing valve, an actuator, and an electronic control board. Specifically, the first three-way water-changing valve is installed on the cold water pipeline, and the second three-way water-changing valve is installed on the hot water pipeline. The first three-way water-changing valve controls the water changing in the cold water pipeline, and the second three-way water-changing valve controls the water changing in the hot water pipeline. Both the first and second three-way water-changing valves are provided with an inlet, an outlet, and a drain. The inlet is connected to the inlet pipe for either cold or hot water, and the outlet is connected to the outlet pipe for either cold or hot water. The hot water outlet pipe is connected to the drain outlets of the first three-way water exchange valve and the second three-way water exchange valve via a drain pipe. The two three-way water exchange valves share a drain pipe to reduce the number of parts and simplify the overall structure. The first and second three-way water exchange valves are also equipped with three-way ball valves for controlling the opening and closing of the inlet, outlet and drain. The three-way ball valve is connected to the actuator, and the actuator is connected to the electronic control board. The electronic control board controls the actuator to rotate the three-way ball valve, thereby realizing the connection of the inlet, outlet and drain.

[0017] The three-way ball valve is used to switch between water supply, water exchange, and leak / freeze protection functions. When water supply is needed, the control board controls the actuator to rotate the three-way ball valve, connecting the inlet and outlet while blocking the drain, thus achieving the water supply function. When water exchange is needed, the control board controls the actuator to rotate the three-way ball valve, connecting the inlet, outlet, and drain, thus achieving the water exchange function. When leak / freeze protection is needed, the control board controls the actuator to rotate the three-way ball valve, blocking the inlet while connecting the outlet and drain, thus achieving the leak / freeze protection function. By setting up a single water exchange valve, multiple functions of both cold and hot water pipelines can be switched simultaneously. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0019] Figure 1 A schematic diagram of the water exchange valve provided by this utility model;

[0020] Figure 2 for Figure 1 A structural diagram from another perspective;

[0021] Figure 3 for Figure 1 A structural diagram from another perspective;

[0022] Figure 4 This is a cross-sectional view of the water change valve provided by this utility model;

[0023] Figure 5 This is a schematic diagram of the actuator provided by this utility model;

[0024] Figure 6 This is a schematic diagram of the valve stem provided by this utility model;

[0025] Figure 7 A schematic diagram of the water outlet pipe provided by this utility model;

[0026] Figure 8 for Figure 7 A structural diagram from another perspective;

[0027] Figure 9 A schematic diagram of the water inlet pipe provided by this utility model;

[0028] Figure 10 This is a schematic diagram of the structure of the copper insert provided by this utility model;

[0029] Figure 11 This is a schematic diagram of the structure of the temperature and pressure sensor provided by this utility model;

[0030] Figure 12 This is a schematic diagram of the flow sensor provided by this utility model;

[0031] Figure 13 This is a schematic diagram of the structure of the drainage pipe provided by this utility model;

[0032] Figure 14 This is a cross-sectional view of the water exchange valve provided by this utility model in the water-flow state;

[0033] Figure 15 This is a cross-sectional view of the water exchange valve provided by this utility model in the state of flowing water;

[0034] Figure 16 This is a cross-sectional view of the water change valve provided by this utility model in a leak-proof and freeze-proof state.

[0035] Figure label:

[0036] 1-First three-way water change valve, 11-First inlet pipe, 111-First groove, 112-Second groove, 113-First external thread, 12-First outlet pipe, 121-First connecting part, 122-Second connecting part, 123-Third connecting part, 124-Fourth connecting part, 125-Second external thread, 126-Internal thread;

[0037] 2-Second three-way water change valve, 21-Second water inlet pipe, 22-Second water outlet pipe;

[0038] 3-Three-way ball valve, 31-Valve stem, 311-Annular groove, 32-Valve ball, 33-Valve ball gasket;

[0039] 4-Drain pipe, 41-Adapter, 42-Third external thread;

[0040] 5-Actuator, 51-Connecting slot;

[0041] 6-Copper insert, 61-Mounting slot;

[0042] 7-Temperature and pressure sensor, 71-Fourth external thread, 72-Mounting surface;

[0043] 8-Flow meter;

[0044] 9 - Flow sensor; 91 - Threaded hole;

[0045] 10 - Pressure sensor. Detailed Implementation

[0046] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0047] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0048] It should be noted that the directional terms such as "up," "down," "left," and "right" used below are defined based on the accompanying diagrams in the instruction manual.

[0049] The core of this utility model is to provide a water exchange valve that combines hot water pipes and cold water pipes, so as to take into account the water exchange function of both cold water pipes and hot water pipes.

[0050] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 A water exchange valve includes a first three-way water exchange valve 1, a second three-way water exchange valve 2, an actuator 5, and an electric control board.

[0051] Specifically, the first three-way water switching valve 1 is installed on the cold water pipe, and the second three-way water switching valve 2 is installed on the hot water pipe. The first three-way water switching valve 1 controls the water switching in the cold water pipe, and the second three-way water switching valve 2 controls the water switching in the hot water pipe. Both the first three-way water switching valve 1 and the second three-way water switching valve 2 are equipped with an inlet, an outlet, and a drain. The inlet is connected to the cold or hot water inlet pipe, and the outlet is connected to the cold or hot water outlet pipe. The first three-way water switching valve 1 and the second three-way water switching valve 2... The drain outlet of water valve 2 is connected through drain pipe 4. The two three-way water exchange valves share one drain pipe 4 to reduce the number of parts and simplify the overall structure. The first three-way water exchange valve 1 and the second three-way water exchange valve 2 are also equipped with a three-way ball valve 3 for controlling the opening and closing of the inlet, outlet and drain outlet. The three-way ball valve 3 is connected to the actuator 5, and the actuator 5 is connected to the electronic control board. The electronic control board controls the actuator 5 to drive the three-way ball valve 3 to rotate, thereby realizing the connection of the inlet, outlet and drain outlet.

[0052] The three-way ball valve 3 is used to switch between water supply, water exchange, and leak / freeze prevention functions. When water supply is needed, the control board controls the actuator 5 to rotate the three-way ball valve 3, connecting the inlet and outlet while blocking the drain, thus achieving the water supply function. When water exchange is needed, the control board controls the actuator 5 to rotate the three-way ball valve 3, connecting the inlet, outlet, and drain, thus achieving the water exchange function. When leak / freeze prevention is needed, the control board controls the actuator 5 to rotate the three-way ball valve 3, blocking the inlet while connecting the outlet and drain, thus achieving the leak / freeze prevention function. By setting up a single water exchange valve, multiple functions of both cold and hot water pipelines can be switched simultaneously.

[0053] The water exchange valve designed in the above manner can simultaneously serve the functions of water flow, water exchange, leak prevention, and freeze protection for both cold and hot water pipes.

[0054] Please refer to Figure 4 and Figure 5 The three-way ball valve 3 includes a valve stem 31 and a valve ball 32, and the valve stem 31 meshes with the valve ball 32 and the actuator 5 for transmission.

[0055] It should be noted that the valve ball 32 is a three-way valve. The valve ball 32 is connected to the actuator 5 via the valve stem 31. The actuator 5 receives signals from the electronic control board and controls the valve stem 31 to rotate, thereby driving the valve ball 32 to rotate. This allows the valve ball 32 to switch between three functions: water supply, water exchange, and leak / freeze prevention. The actuator 5 is electrically controlled and performs a rotational movement with a maximum stroke of 180 degrees. The actuator 5 is provided with a connecting groove 51, which cooperates with the valve stem 31 to transfer torque. In this embodiment, the connecting groove 51 is a flat groove, but in practical applications, this is not a limitation, as long as the above-mentioned technical effects are achieved.

[0056] Please refer to Figure 4 and Figure 6 The valve ball 32 is provided with a valve ball gasket 33 on its outside, and the valve stem 31 is provided with an annular groove 311 for installing a sealing ring.

[0057] Understandably, the valve ball 32 is provided with a valve ball gasket 33 on its outside to fill the grooves of the first water inlet pipe 11 and the second water inlet pipe 21, and seal the valve ball 32. The two ends of the valve stem 31 are respectively engaged with the valve ball 32 and the actuator 5. The annular groove 311 in the middle is used to install the sealing ring and achieve a seal with the inner wall of the first water outlet pipe 12 and the second water outlet pipe 22.

[0058] Please refer to Figure 7 , Figure 8 and Figure 9The first three-way water valve 1 includes a first inlet pipe 11 and a first outlet pipe 12 sleeved outside the first inlet pipe 11. The first inlet pipe 11 and the first outlet pipe 12 are threaded together. The first inlet pipe 11 is sealed to the first outlet pipe 12 and the three-way ball valve 3 to prevent water leakage from the connection between the first inlet pipe 11, the first outlet pipe 12 and the three-way ball valve 3.

[0059] It should be noted that the first groove 111 of the first water inlet pipe 11 and the second water inlet pipe 21 is used to place the sealing ring, thereby achieving the function of sealing with the valve ball gasket 33 and eliminating errors. The second groove 112 is used to fit the O-ring. When the first external thread 113 of the first water inlet pipe 11 and the internal thread 126 on the first water outlet pipe 12 are engaged, they play a sealing role. The first external thread 113 at the other end of the first water inlet pipe 11 is connected to the pipeline.

[0060] The first water inlet pipe 11 is provided with a first connecting part 121, a second connecting part 122, a third connecting part 123, and a fourth connecting part 124. The first connecting part 121 and the second connecting part 122 are located at the upper end of the first water inlet pipe 11, the third connecting part 123 is located at the rear end of the first water inlet pipe 11, and the fourth connecting part 124 is located at the lower end of the first water inlet pipe 11. The first connecting part 121 has a through hole for installing the valve stem 31 and a positioning surface for installing the actuator 5. The positioning surface has a threaded hole. The actuator 5 is fixed to the positioning surface of the first connecting part 121 by screws. The valve stem 31 passes through the through hole of the first connecting part 121 and is connected to the valve ball 32. The actuator 5 is sealed to the first connecting part 121. The second connecting part 122 has a through hole for installing the temperature and pressure sensor 7. This through hole is a threaded hole, and the through hole has a side machined surface for installing a seal. The first connecting part 123 is used to seal and connect the temperature and pressure sensor 7; the second external thread 125 is used to connect the water pipe to achieve the connection with the water-using device; the internal thread 126 of the first water outlet pipe 12 is connected to the first external thread 113 of the first water inlet pipe 11 to achieve the connection between the first water inlet pipe 11 and the first water outlet pipe 12; the third connecting part 123 has a through hole for installing the drain pipe 4 and a positioning surface for installing the drain pipe 4. The positioning surface is provided with a threaded hole. The drain pipe 4 is inserted into the through hole of the third connecting part 123. The adapter 41 of the drain pipe 4 is fixed to the positioning surface of the third connecting part 123 by screws to achieve the connection between the drain pipe 4 and the third connecting part 123; the fourth connecting part 124 is used to fix the flow sensor 9. The fourth connecting part 124 is provided with a threaded hole. The flow sensor 9 is fixed to the fourth connecting part 124 by screws; the flow meter 8 is inserted into the first water outlet pipe 12.

[0061] In the above embodiment, the second three-way water valve 2 includes a second inlet pipe 21 and a second outlet pipe 22 sleeved outside the second inlet pipe 21. The second inlet pipe 21 and the second outlet pipe 22 are threaded together. The second inlet pipe 21 is sealed to the second outlet pipe 22 and the three-way ball valve 3 to prevent water leakage from the connection between the second inlet pipe 21, the second outlet pipe 22, and the three-way ball valve 3.

[0062] It is understandable that the first groove 111 of the first water inlet pipe 11 and the second water inlet pipe 21 is used to place the sealing ring, so as to achieve the function of sealing with the valve ball gasket 33 and eliminating errors. The second groove 112 is used to fit the O-ring. When the first external thread 113 of the second water inlet pipe 21 and the internal thread 126 on the second water outlet pipe 22 are engaged, they play a sealing role. The first external thread 113 at the other end of the second water inlet pipe 21 is connected to the pipeline.

[0063] The second water inlet pipe 21 is provided with a first connecting part 121, a second connecting part 122, a third connecting part 123, and a fourth connecting part 124. The first connecting part 121 and the second connecting part 122 are located at the upper end of the second water inlet pipe 21, the third connecting part 123 is located at the rear end of the second water inlet pipe 21, and the fourth connecting part 124 is located at the lower end of the second water inlet pipe 21. The first connecting part 121 has a through hole for installing the valve stem 31 and a positioning surface for installing the actuator 5. The positioning surface has a threaded hole. The actuator 5 is fixed to the positioning surface of the first connecting part 121 by screws. The valve stem 31 passes through the through hole of the first connecting part 121 and is connected to the valve ball 32. The actuator 5 is sealed to the first connecting part 121. The second connecting part 122 has a through hole for installing the pressure sensor 10. This through hole is a threaded hole, and the through hole has a side machined surface for installing a seal. The pressure sensor 10 is sealed and connected; the second external thread 125 is used to connect the water pipe to achieve connection with the water-using device; the internal thread 126 of the second water outlet pipe 22 is connected to the first external thread 113 of the second water inlet pipe 21 to achieve connection between the second water inlet pipe 21 and the second water outlet pipe 22; the third connecting part 123 has a through hole for installing the drain pipe 4 and a positioning surface for installing the drain pipe 4. The positioning surface is provided with a threaded hole. The drain pipe 4 is inserted into the through hole of the third connecting part 123. The adapter 41 of the drain pipe 4 is fixed to the positioning surface of the third connecting part 123 by screws to achieve connection between the drain pipe 4 and the third connecting part 123; the fourth connecting part 124 is used to fix the flow sensor 9. The fourth connecting part 124 is provided with a threaded hole. The flow sensor 9 is fixed to the fourth connecting part 124 by screws; the flow meter 8 is inserted into the second water outlet pipe 22.

[0064] Based on the above embodiment, copper inserts 6 are nested at the ends of the first water outlet pipe 12 and the second water outlet pipe 22, and the copper inserts 6 are sealed to the first water outlet pipe 12 and the second water outlet pipe 22.

[0065] Please refer to Figure 10 The copper insert 6 is provided with an installation groove 61, which is used to fit an O-ring and cooperate with the side of the first water outlet pipe 12 and the second water outlet pipe 22 to achieve a seal, thereby preventing water from flowing out from the connection between the copper insert 6 and the first water outlet pipe 12 and the second water outlet pipe 22, and preventing water leakage.

[0066] Please refer to Figure 1 , Figure 2 , Figure 4 and Figure 10 A temperature and pressure sensor 7, which is connected to the electronic control board, is installed on the first water outlet pipe 12. The temperature and pressure sensor 7 is used to measure the temperature and pressure inside the first water outlet pipe 12 in real time. The temperature and pressure sensor 7 is sealed to the first water outlet pipe 12. The temperature and pressure sensor 7 is provided with a fourth external thread 71, and a mounting surface 72 is provided on the fourth external thread 71. The fourth external thread 71 is connected to the through hole on the second connecting part 122. A sealing ring is provided on the mounting surface 72 to achieve a sealed connection between the temperature and pressure sensor 7 and the first water outlet pipe 12, so as to prevent water leakage from the connection between the temperature and pressure sensor 7 and the first water outlet pipe 12.

[0067] Understandably, the temperature and pressure sensor 7 is sealed to the first water outlet pipe 12 through a through hole on the second connecting part 122 to prevent water leakage from the connection between the temperature and pressure sensor 7 and the first water outlet pipe 12. The temperature and pressure sensor 7 is used to receive the temperature and pressure in the first water outlet pipe 12 and convert the temperature and pressure into electrical signals, which are then transmitted to the electronic control board. When the temperature and pressure sensor 7 detects that the temperature inside the first water outlet pipe 12 is lower than the preset temperature, the electronic control board controls the first water outlet pipe 12 to drain water to prevent the water from freezing inside the first water outlet pipe 12 and causing the first water outlet pipe 12 to rupture. Since the first water outlet pipe 12 is a cold water pipe, temperature detection is necessary; the second water outlet pipe 22 is a hot water pipe, so a temperature and pressure sensor 7 is not required.

[0068] Please refer to Figure 1 , Figure 2 , Figure 4 and Figure 12 The first outlet pipe 12 is equipped with a flow meter 8, which is used to measure the water flow in the first outlet pipe 12 in real time. The first outlet pipe 12 is equipped with a flow sensor 9 that is connected to the flow meter 8. The flow sensor 9 is connected to the electronic control board.

[0069] It should be noted that the flow meter 8 works in conjunction with the flow sensor 9 to achieve flow detection. The flow sensor 9 has a threaded hole 91. A screw is passed through the threaded hole 91 to fix the flow sensor 9 on the fourth connection part 124 of the first water outlet pipe 12 and the second water outlet pipe 22, so as to realize the connection between the flow sensor 9 and the first water outlet pipe 12 and the second water outlet pipe 22. The built-in chip of the flow sensor 9 works with the flow meter 8 to convert the flow into an electrical signal and transmit it to the electronic control board.

[0070] In the above situation, the second water outlet pipe 22 is equipped with a pressure sensor 10 that is connected to the electronic control board. The pressure sensor 10 is used to measure the pressure in the second water outlet pipe 22 in real time. The pressure sensor 10 is sealed to the second water outlet pipe 22.

[0071] It is understandable that the second connection part 122 provided on the second water outlet pipe 22 is used to install the pressure sensor 10. The through hole of the second connection part 122 is provided with a side machined surface for installing a seal, which is used to seal the connection of the pressure sensor 10. The connection and sealing method of the pressure sensor 10 is the same as that of the temperature and pressure sensor 7. The difference is that the pressure sensor 10 only receives the pressure information in the second water outlet pipe 22 and converts the pressure into an electrical signal, which is then transmitted to the electronic control board.

[0072] Please refer to Figure 13 The drain pipe 4 is provided with at least two adapters 41. The adapters 41 are sealed to the drain ports of the first three-way water exchange valve 1 and the second three-way water exchange valve 2. One end of the drain pipe 4 is provided with two adapters 41, and the other end is provided with a third external thread 42 to connect to the water inlet of other pipes, thereby achieving the effect of connecting the cold water and hot water pipes to the drain pipe 4.

[0073] It should be noted that the adapter 41 has a threaded structure on its outer periphery to connect with the first water outlet pipe 12 and the second water outlet pipe 22. The adapter 41 has a groove on its inner periphery for installing the valve ball gasket 33. The connecting plate of the adapter 41 has screw holes. The adapter 41 is connected to the first connecting part 121 of the first water inlet pipe 11 and the second water inlet pipe 21 by screws. The threaded structure on the outer periphery of the adapter 41 has a side groove for installing O-rings to achieve a sealed connection with the first water outlet pipe 12 and the second water outlet pipe 22. The inner hole of the drain pipe 4 is used to plug the check valve to prevent backflow during drainage.

[0074] Reference under water flow conditions Figure 14 The valve ball 32 is connected on both sides, with cold water and hot water pipes on the top and bottom respectively. The control panel can set the water flow time for the cold and hot water pipes. At this time, the first inlet pipe 11 is connected to the first outlet pipe 12, and the second inlet pipe 21 is connected to the second outlet pipe 22. However, the first outlet pipe 12 and the second outlet pipe 22 are not connected to the drain pipe 4. When switching from the water flow state to the running water state, refer to... Figure 15 The control board controls the actuator 5 to rotate the three-way ball valve 3 180 degrees, connecting the drain pipe 4 to the first outlet pipe 12 and the second outlet pipe 22. At this time, the first inlet pipe 11 is connected to the first outlet pipe 12 and the drain pipe 4, and the second inlet pipe 21 is connected to the second outlet pipe 22 and the drain pipe 4. This allows cold and hot water to be drained independently or at set times, ensuring a continuous supply of cold and hot water for the household. Refer to [the relevant documentation] when switching from the water supply state to the leak-proof and freeze-proof state. Figure 16 The control board controls the actuator 5 to rotate the three-way ball valve 3 counterclockwise by 90 degrees, so that one valve port of the three-way ball valve 3 is connected to the first outlet pipe 12 and the second outlet pipe 22, and the other valve port is connected to the drain pipe 4, thereby blocking the first inlet pipe 11 and the second inlet pipe 21. This allows the water stored in the first outlet pipe 12 and the second outlet pipe 22 to be discharged through the drain pipe 4 and prevents water from entering the first inlet pipe 11 and the second inlet pipe 21, thus achieving the effect of preventing leakage and freezing.

[0075] In summary, the water exchange valve provided by this utility model combines hot and cold water circulation pipes together. It can set a cycle and time for the flowing water, and can also detect the water flow status through flow rate, including but not limited to triggering the leakage protection function when the water volume and time of a single use are exceeded. The leakage protection function can also be triggered by detecting temperature and pressure to drain water, prevent the pipes from freezing and cracking, and enrich the product's application scenarios.

[0076] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0077] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0078] The above provides a detailed description of a water change valve provided by this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A water change valve, characterized by The utility model relates to a kind of water valve, including: First three-way water valve (1) of cold water pipeline and second three-way water valve (2) of hot water pipeline are arranged, the first three-way water valve (1) and the second three-way water valve (2) are equipped with water inlet, water outlet and drain, it is also equipped with three-way ball valve (3) for controlling the on-off of water inlet, water outlet and drain, the drain of the first three-way water valve (1) and the second three-way water valve (2) is communicated by drain pipe (4), three-way ball valve (3) is connected with actuator (5), actuator (5) is connected with electric control board signal, three-way ball valve (3) is used to switch water function, water function and anti-leakage anti-freezing function.

2. The water change valve of claim 1, wherein The three-way ball valve (3) includes a valve stem (31) and a valve ball (32), the valve stem (31) is engaged with the valve ball (32) and the actuator (5) for transmission.

3. The water change valve of claim 2, wherein, The valve ball (32) is provided with a valve ball gasket (33) on the outside, and the valve stem (31) is provided with an annular groove (311) for installing a sealing ring.

4. The water change valve of claim 1, wherein, The first three-way water valve (1) includes a first water inlet pipe (11) and a first water outlet pipe (12) sleeved outside the first water inlet pipe (11), the first water inlet pipe (11) is threadedly connected with the first water outlet pipe (12), and the first water inlet pipe (11) is sealingly connected with the first water outlet pipe (12) and the three-way ball valve (3).

5. The water change valve of claim 4, wherein, The second three-way water valve (2) includes a second water inlet pipe (21) and a second water outlet pipe (22) sleeved outside the second water inlet pipe (21), the second water inlet pipe (21) is threadedly connected with the second water outlet pipe (22), and the second water inlet pipe (21) is sealingly connected with the second water outlet pipe (22) and the three-way ball valve (3).

6. The water change valve of claim 5, wherein, The end of the first water outlet pipe (12) and the second water outlet pipe (22) is nested with a copper insert (6), and the copper insert (6) is sealingly connected with the first water outlet pipe (12) and the second water outlet pipe (22).

7. The water change valve according to any one of claims 4 to 6, wherein The first water outlet pipe (12) is provided with a temperature and pressure sensor (7) connected with the electric control board signal, the temperature and pressure sensor (7) is used for real-time measurement of the temperature and pressure in the first water outlet pipe (12), and the temperature and pressure sensor (7) is sealingly connected with the first water outlet pipe (12).

8. The water change valve of claim 7, wherein, The first water outlet pipe (12) is provided with a flow meter (8) therein, the flow meter (8) is used for real-time measurement of the water flow in the first water outlet pipe (12), and the first water outlet pipe (12) is provided with a flow sensor (9) connected with the flow meter (8) in signal, and the flow sensor (9) is connected with the electric control board signal.

9. The water change valve according to any one of claims 5-6, wherein The second water outlet pipe (22) is provided with a pressure sensor (10) connected with the electric control board signal, and the pressure sensor (10) is used for real-time measurement of the pressure in the second water outlet pipe (22), and the pressure sensor (10) is sealingly connected with the second water outlet pipe (22).

10. The water change valve of claim 1, wherein, The drain pipe (4) is provided with at least two adapters (41), and the adapters (41) are in sealing connection with the drain outlets of the first three-way water valve (1) and the second three-way water valve (2).

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