Faucet

Abstract

The faucet comprises a valve body, a drain pipe, a thermal expansion and cold contraction piece and a water flow adjusting valve, and the valve body is provided with a main flow channel allowing a medium to flow; the drainage pipe is connected to the valve body and provided with a drainage channel, and one end of the drainage channel communicates with the main flow channel. The thermal expansion and cold contraction piece is arranged in the drainage channel, a valve rod is arranged on the side, away from the valve body, of the thermal expansion and cold contraction piece, and the axial direction of the valve rod is the first direction. The water flow adjusting valve is arranged on the side, away from the drainage pipe, of the thermal expansion and cold contraction piece, a valve port communicating the drainage channel with the exterior of the drainage pipe is formed in the position, corresponding to the valve rod, of the water flow adjusting valve, and the water flow adjusting valve is movably connected to the drainage pipe in the first direction. Wherein the valve rod is used for being inserted into the valve port so as to seal the valve port; and when the thermal expansion and cold contraction piece contracts due to cold, at least part of the valve rod is moved out of the valve port, so that the valve port is opened. The position of the water flow adjusting valve in the first direction can be adjusted, so that the opening degree of the valve port is adjusted, and the water flow and the flow speed of the valve port are controlled.

Description

Technical Field

[0001] The present application relates to the field of valves, and in particular to a faucet. Background Art

[0002] As the temperature drops more and more frequently in winter, the problem of frozen pipes has gradually become prominent. Traditional faucets are prone to cracking due to water freezing inside the pipes in low temperature environments, causing inconvenience and economic losses to users. Utility Model Content

[0003] The present application provides a faucet, aiming to improve the problem that the faucet is easily frozen at low temperatures.

[0004] In order to achieve the above technical effects, a technical solution adopted by the present application is to provide a faucet, comprising:

[0005] A valve body, wherein the valve body has a main flow channel for the medium to flow;

[0006] A drain pipe is connected to the valve body, the drain pipe has a drain channel, one end of the drain channel is connected to the main channel;

[0007] A thermal expansion and contraction component is disposed in the drainage channel, a valve stem is disposed on a side of the thermal expansion and contraction component away from the valve body, and an axial direction of the valve stem is a first direction; and

[0008] A water flow regulating valve is arranged on a side of the thermal expansion and contraction component away from the drain pipe, a valve port communicating with the drain channel and the outside of the drain pipe is opened at a position corresponding to the valve stem on the water flow regulating valve, and the water flow regulating valve is movably connected to the drain pipe along a first direction;

[0009] The valve stem is used to be inserted into the valve port to close the valve port; when the thermal expansion and contraction part contracts due to cold, the valve stem is at least partially moved out of the valve port to open the valve port.

[0010] Among them, the faucet also includes:

[0011] The first elastic member is arranged in the drainage channel, and is elastically connected between the water flow regulating valve and the valve stem. The first elastic member is used to generate a force on the valve stem to move toward the valve body when the thermal expansion and contraction member expands due to heat.

[0012] Among them, a convex portion is convexly provided on the outer wall surface of the valve stem, the water flow regulating valve has a positioning surface facing the thermal expansion and contraction component, one end of the first elastic component is connected to the convex portion, and the other end is connected to the positioning surface.

[0013] Among them, the valve stem includes:

[0014] A rod portion, one end of which is connected to the thermal expansion and contraction component and is extended along a first direction;

[0015] The first sleeve is sleeved on the rod, and at least part of one end of the first sleeve away from the thermal expansion and contraction component can be plugged into the valve port, and the convex part is ring-arranged on the outer side of one end of the first sleeve close to the thermal expansion and contraction component.

[0016] Wherein, from the thermal expansion and contraction component to the direction of the water flow regulating valve, the outer diameter of the end of the first sleeve away from the thermal expansion and contraction component gradually decreases.

[0017] Among them, the faucet also includes:

[0018] The second elastic member is arranged in the drainage channel and on the side of the thermal expansion and contraction member away from the water flow regulating valve; the second elastic member is used to generate a force for the thermal expansion and contraction member to move toward the water flow regulating valve when the thermal expansion and contraction member expands due to heat.

[0019] Wherein, the water flow regulating valve is threadedly connected to the drain pipe.

[0020] Among them, the water flow regulating valve includes a first section and a second section connected to the first section, the first section is threadedly connected to the drain pipe; the first section is provided with a cavity connected to the drainage channel, the second section is provided with a valve port, and the valve port is connected to the cavity; one end of the valve stem away from the thermal expansion and contraction part is at least partially embedded in the cavity, and the second section is sealed and connected to the drain pipe.

[0021] Wherein, a first sealing member is arranged between the second section and the drain pipe.

[0022] Among them, the faucet also includes:

[0023] The second sleeve is connected to one end of the drain pipe away from the valve body, and the water flow regulating valve is connected to the second sleeve.

[0024] The above scheme adopts thermal expansion and contraction parts and utilizes the thermal expansion and contraction of the thermal expansion and contraction parts to make the valve stem close the valve port when the thermal expansion and contraction parts are in the normal state or when they expand due to heat, and open the valve port when the thermal expansion and contraction parts shrink due to cold, so that the valve port can be opened in a low temperature state to discharge the water in the main channel, thereby reducing the possibility of the faucet being frozen; by providing a water flow regulating valve that can be moved along a first direction, the position of the water flow regulating valve along the first direction can be adjusted when necessary, and then the relative position of the valve stem and the valve port can be adjusted to adjust the opening of the valve port, thereby controlling the water flow and flow rate of the valve port, and improving the controllability of the faucet drainage. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] 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.

[0026] Figure 1 This is a schematic diagram of the structure of an example of a faucet of the present application;

[0027] Figure 2 It is a structural schematic diagram of an example of a drainage pipe of the present application;

[0028] Figure 3 It is a structural schematic diagram of an example of the water flow regulating valve of the present application in a disassembled state.

[0029] Wherein: 100, valve body; 110, main flow channel; 120, valve core; 130, connecting rod; 140, handle; 200, drain pipe; 210, drainage channel; 220, second sleeve; 230, second sealing member; 240, first step surface; 300, thermal expansion and contraction member; 310, valve stem; 311, rod; 312, first sleeve; 313, convex portion; 400, first elastic member; 500, water flow regulating valve; 510, first section; 511, cavity; 520, second section; 521, valve port; 522, positioning groove; 523, second step surface; 524, first sealing member; 600, second elastic member; 2a, first direction. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not 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 this application.

[0031] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply 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 only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0032] In this application, the word "exemplary" is used to mean "used as an example, illustration, or description." Any embodiment described in this application as "exemplary" is not necessarily to be construed as being preferred or advantageous over other embodiments. The following description is given to enable any technician in the field to implement and use the present application. In the following description, details are listed for the purpose of explanation. It should be understood that a person of ordinary skill in the art can recognize that the present application can be implemented without using these specific details. In other instances, well-known structures and processes will not be elaborated in detail to avoid obscuring the description of the present application with unnecessary details. Therefore, the present application is not intended to be limited to the embodiments shown, but is consistent with the widest scope consistent with the principles and features disclosed in the present application.

[0033] When the faucet is turned off, there will be a certain amount of water in the flow channel of the faucet. When the ambient temperature is low, the water in the faucet is easy to freeze. When the faucet is turned on again, the faucet cannot be used anymore and it is also easy for the faucet to freeze and crack.

[0034] See also Figure 1 , Figure 2 and Figure 3 The present application proposes an example of a faucet, including a valve body 100, a drain pipe 200, a thermal expansion and contraction component 300, and a water flow regulating valve 500. The valve body 100 has a main flow channel 110 for medium flow; the drain pipe 200 is connected to the valve body 100, and the drain pipe 200 has a drainage channel 210, one end of the drainage channel 210 is connected to the main flow channel 110; the thermal expansion and contraction component 300 is arranged in the drainage channel 210, and a valve stem 310 is arranged on the side of the thermal expansion and contraction component 300 away from the valve body 100, and the axial direction of the valve stem 310 is a first Direction 2a; the water flow regulating valve 500 is arranged on the side of the thermal expansion and contraction component 300 away from the drain pipe 200, and a valve port 521 connecting the drain channel 210 and the outside of the drain pipe 200 is opened at a position corresponding to the valve stem 310 on the water flow regulating valve 500, and the water flow regulating valve 500 is movably connected to the drain pipe 200 along the first direction 2a; wherein the valve stem 310 is used to be inserted into the valve port 521 to close the valve port 521; when the thermal expansion and contraction component 300 is cooled and contracted, the valve stem 310 is at least partially moved out of the valve port 521 to open the valve port 521.

[0035] The valve body 100 is at least partially hollow inside to form a main flow channel 110 for medium flow. The valve body 100 has an input port and an output port connected to the main flow channel 110, wherein the input port can be used to access a medium source, the medium enters the main flow channel 110 through the input port, and can flow out of the valve body 100 through the output port. The medium in the example of the present application can be any liquid that needs to be output through a faucet. For the convenience of description, the following example takes water as an example for explanation.

[0036] The drain pipe 200 is connected to the valve body 100. The drain pipe 200 is at least partially hollow to form a drain channel 210. Water can flow out of the drain pipe 200 along the drain channel 210. The drain channel 210 is connected to the main channel 110. When the drain channel 210 is in an open state, the water in the main channel 110 can flow out along the drain channel 210. The drain pipe 200 in this example can be arranged between the input port and the output port of the valve body 100. Optionally, the drain pipe 200 is arranged below the valve body 100. The drain channel 210 can extend directly below or obliquely below the valve body 100. When the drain pipe 200 is opened, water can flow along the drain pipe 200 under the action of gravity. The drain channel 210 has an input port and an output port. The input port of the drain channel 210 is connected to the main channel 110 of the valve body 100. Water can enter the drain channel 210 through the input port of the drain channel 210 and be output from the output port of the drain channel 210.

[0037] The thermal expansion and contraction component 300 is arranged in the drainage channel 210, and the thermal expansion and contraction component 300 can be deformed in the drainage channel 210. When the thermal expansion and contraction component 300 is heated, the volume of the thermal expansion and contraction component 300 will increase, and when the thermal expansion and contraction component 300 is cold, the thermal expansion and contraction component 300 will shrink, and the volume of the thermal expansion and contraction component 300 will decrease. The valve stem 310 is connected to the thermal expansion and contraction component 300. When the thermal expansion and contraction component 300 is deformed at different temperatures, as the volume of the thermal expansion and contraction component 300 increases or decreases, the position of the valve stem 310 will also change relatively. In the example of the present application, the valve stem 310 is arranged on the side of the thermal expansion and contraction component 300 away from the valve body. When the volume of the thermal expansion and contraction component 300 increases, the valve stem 310 will move in the direction away from the valve body. When the volume of the thermal expansion and contraction component 300 decreases, the valve stem 310 will move in the direction close to the valve body along with the thermal expansion and contraction component 300. The thermal expansion and contraction component 300 in the example of the present application can be made of a material with thermal expansion and contraction properties. Different materials can be selected according to the use requirements at different temperatures. A gap can be set between the outer wall surface of the thermal expansion and contraction component 300 in this example and the inner wall surface of the drainage channel 210, and the outer diameter of the thermal expansion and contraction component 300 can be smaller than the inner diameter of the drainage channel 210, so that water can flow along the drainage channel 210. Optionally, a groove or a through hole can also be set on the thermal expansion and contraction component 300, so that the water in the drainage channel 210 can flow toward the water flow regulating valve 500 through the thermal expansion and contraction component 300. The thermal expansion and contraction component 300 in the present application is expanded by heat, which means that the ambient temperature of the thermal expansion and contraction component 300 changes, so that the volume of the thermal expansion and contraction component 300 increases, causing the valve stem 310 to be pressed against the valve port 521; when the thermal expansion and contraction component 300 does not expand or contract, the valve stem 310 can also be plugged into the valve port 521 to close the valve port 521. For the convenience of description, in the following examples of the present application, when the thermal expansion and contraction component 300 is expanded by heat, the valve stem 310 closes the valve port 521 as an example.

[0038] The water flow regulating valve 500 is connected to the drain pipe 200, and the water flow regulating valve 500 can be used to close the output port of the drain pipe 200. The water flow regulating valve 500 is provided with a valve port 521 connected to the drain channel 210. The valve port 521 in this example can be a through hole through which the water flow regulating valve 500 is penetrated, and the water in the drain channel 210 can flow to the outside of the water flow regulating valve 500 along the valve port 521; alternatively, the valve port 521 can be a straight hole through which the water flow regulating valve 500 is penetrated. The water flow regulating valve 500 is arranged on the side of the thermal expansion and contraction component 300 away from the valve body to make full use of the space on the drain pipe 200. The valve port 521 in this example corresponds to the position of the valve stem 310, so that when the valve stem 310 is inserted into a certain position in the valve port 521, the valve stem 310 can seal the valve port 521, and when the valve stem 310 moves to the outside of the valve port 521, the valve port 521 can be opened. Optionally, the outer diameter of the end of the valve stem 310 close to the valve port 521 in this example gradually decreases toward the direction of the water flow regulating valve 500 due to the thermal expansion and contraction component, so that the end of the valve stem 310 close to the valve port 521 is conical or convex, thereby making it easier to insert the valve stem 310 into the valve port 521, so that when the valve stem 310 closes the valve port 521, the sealing performance between the valve stem 310 and the valve port 521 is better.

[0039] In this example, when at room temperature, the thermal expansion and contraction component 300 maintains the current state, and the valve stem 310 is inserted into the valve port 521 to close the valve port 521; when the temperature rises, the thermal expansion and contraction component 300 expands due to the heat, causing the valve stem 310 to move toward the water flow regulating valve 500, and further squeezes the valve stem 310 toward the valve port 521, so that the valve port 521 is further sealed; when the temperature drops, the thermal expansion and contraction component 300 contracts, and as the volume of the thermal expansion and contraction component 300 decreases, the valve stem 310 moves away from the valve port 521, so that the valve stem 310 is at least partially moved out of the valve port 521, and the valve port 521 is opened. At this time, the water in the drainage channel 210 can flow to the outside through the valve port 521. When the temperature drops, the thermal expansion and contraction component 300 can shrink, causing the valve port 521 to open, so that the water in the main channel 110 can be discharged outward along the drainage channel 210 and the valve port 521, thereby reducing the possibility of water in the main channel 110 freezing and reducing the problem of the faucet freezing at low temperatures.

[0040] The axial direction of the valve stem 310 is the first direction 2a. In this example, the valve stem 310 may be in a long strip shape, and the length direction of the valve stem 310 may be the axial direction of the valve stem 310. The water flow regulating valve 500 is movably connected to the drain pipe 200 along the first direction 2a, so as to adjust the position of the water flow regulating valve 500 on the drain pipe 200. When the thermal expansion and contraction component 300 contracts when exposed to cold, the valve stem 310 moves away from the water flow regulating valve 500. Under the premise that the moving distance of the valve stem 310 is constant, when the water flow regulating valve 500 is closer to the thermal expansion and contraction component 300 along the first direction 2a, the distance that the valve stem 310 moves toward the outside of the valve port 521 will be relatively smaller than the distance that the valve stem 310 moves toward the outside of the valve port 521 when the water flow regulating valve 500 is away from the thermal expansion and contraction component 300 along the first direction 2a. As the position of the valve stem 310 and the valve port changes, the opening of the valve port 521 can be made different, and the flow rate and flow velocity of the valve port 521 will also change. Under different temperature requirements, the drainage speed and flow rate of the drain pipe 200 can be adjusted by adjusting the relative position of the water flow regulating valve 500 and the valve stem 310, so as to improve the controllability of the faucet drainage speed and water flow rate.

[0041] In some examples, the faucet may further include a valve core 120 disposed on the valve body 100, and a connecting rod 130 connected to the valve core 120. The valve core 120 may be used to control the flow of water in the main channel 110, and the connecting rod 130 is connected to the valve core 120 to control the opening of the valve core 120; optionally, a handle 140 may be provided on the connecting rod 130, and the handle 140 is used to control the rotation of the connecting rod 130. Optionally, the handle 140 may be provided at one end of the connecting rod 130 away from the valve core 120, and a gap may be provided between the handle 140 and the valve body 100 in this example to increase the distance between the handle 140 and the valve body 100, thereby facilitating the installation of insulation facilities on the valve body 100.

[0042] See also Figure 2 and Figure 3 In some examples, the faucet further includes a first elastic member 400, which is disposed in the drainage channel 210. The first elastic member 400 is elastically connected between the water flow regulating valve 500 and the valve stem 310. The first elastic member 400 is used to generate a force on the valve stem 310 to move toward the valve body 100 when the thermal expansion and contraction member 300 expands due to heat.

[0043] The first elastic member 400 is disposed in the drainage channel 210. The first elastic member 400 can be compressed or stretched under the action of an external force, so that the first elastic member 400 can generate an elastic force on its external components. In this example, the first elastic member 400 can be a spring.

[0044] The first elastic member 400 is connected to the water flow regulating valve 500 and the valve stem 310. When the first elastic member 400 is deformed by force, the first elastic member 400 can generate an elastic force on the water flow regulating valve 500 and the valve stem 310, so that the valve stem 310 and the water flow regulating valve 500 have a tendency to move in opposite directions. In the example of the present application, after the water flow regulating valve 500 is installed in the preset position, the water flow regulating valve 500 maintains the preset position, and the first elastic member 400 acts on the valve stem 310, so that the valve stem 310 can move relative to the water flow regulating valve 500. Optionally, in this example, the first elastic member 400 can be sleeved on the outside of the valve stem 310, and the axis of the first elastic member 400 can be parallel to the axial direction of the valve stem 310.

[0045] When the thermal expansion and contraction component 300 expands due to heat, the thermal expansion and contraction component 300 will drive the valve stem 310 to move in the direction close to the water flow regulating valve 500. The valve stem 310 is plugged into the valve port 521, which can close the valve port 521. When the valve stem 310 is plugged into the valve port 521 for a long time, it is easy to cause the assembly of the valve stem 310 and the valve port 521 to get stuck; when the thermal expansion and contraction component 300 contracts due to cold, the valve stem 310 is easy to get stuck relative to the water flow regulating valve 500. In this example, when the thermal expansion and contraction component 300 expands due to heat, the first elastic component 400 can generate a force on the valve stem 310 to move away from the water flow regulating valve 500, so that the valve stem 310 has a tendency to move away from the water flow regulating valve 500. When the thermal expansion and contraction component 300 contracts due to cold, the valve stem 310 can move quickly with the thermal expansion and contraction component 300, and then quickly open the valve port 521 for rapid drainage. Optionally, the first elastic member 400 can be connected and fixed to the water flow regulating valve 500 and the valve stem 310. The first elastic member 400 can also be used to generate a force on the valve stem 310 to move away from the valve body 100 when the thermal expansion and contraction member 300 contracts due to cold, so as to control the movement range of the valve stem 310 and reduce the possibility of the valve stem 310 being misaligned in the drainage channel 210.

[0046] In some examples, a convex portion 313 is convexly provided on the outer wall surface of the valve stem 310, the water flow regulating valve 500 has a positioning surface facing the thermal expansion and contraction component 300, one end of the first elastic member 400 is connected to the convex portion 313, and the other end is connected to the positioning surface. The convex portion 313 can be a convex rib or a convex block protruding from the outer surface of the valve stem 310. The convex portion 313 is used to form a surface on the outer surface of the valve stem 310 for blocking the first elastic member 400, so as to limit the position of the first elastic member 400 outside the valve stem 310. The positioning surface is the surface of the water flow regulating valve 500 facing the thermal expansion and contraction component 300. One end of the first elastic member 400 is connected to the convex portion 313 so that the first elastic member 400 cannot continue to move toward the convex portion 313 toward the thermal expansion and contraction component 300. The other end of the convex portion 313 is connected to the positioning surface of the water flow regulating valve 500 so that the first elastic member 400 is limited between the valve stem 310 and the water flow regulating valve 500, thereby limiting the first elastic member 400 and reducing the misalignment of the first elastic member 400. The first elastic member 400 in this example can be respectively in contact with the convex portion 313 and the positioning surface, and the first elastic member 400 can also be connected and fixed to the convex portion 313 and the positioning surface.

[0047] In some examples, the valve stem 310 includes a rod portion 311 and a first sleeve 312; one end of the rod portion 311 is connected to the thermal expansion and contraction component 300 and extends along the first direction 2a; the first sleeve 312 is sleeved on the rod portion 311, and at least a portion of the end of the first sleeve 312 away from the thermal expansion and contraction component 300 can be plugged into the valve port 521, and the protrusion 313 is ring-arranged on the outer side of an end of the first sleeve 312 close to the thermal expansion and contraction component 300.

[0048] The rod 311 is used to connect to the thermal expansion and contraction component 300, and one end of the rod 311 away from the thermal expansion and contraction component 300 can be inserted into the valve port 521 to close the valve port 521. In this example, the axial direction of the rod 311 can be parallel to the first direction 2a.

[0049] The first sleeve 312 is sleeved on the rod 311 so that the first sleeve 312 at least partially covers the outer surface of the rod 311. The end of the first sleeve 312 close to the thermal expansion and contraction member 300 has an opening, and the end of the first sleeve 312 away from the thermal expansion and contraction member 300 can be closed. When the valve stem 310 moves under the action of the thermal expansion and contraction member 300, the first sleeve 312 can move synchronously. The convex portion 313 is annularly arranged on the first sleeve 312, and the convex portion 313 is closer to the end of the first sleeve 312 close to the thermal expansion and contraction member 300. The first elastic member 400 is arranged between the convex portion 313 and the water flow regulating valve 500, so that when the first sleeve 312 and the rod 311 move synchronously, the convex portion 313 can interact with the first elastic member 400. In this example, the end of the first sleeve 312 away from the thermal expansion and contraction component 300 can be inserted into the valve port 521, so that the first sleeve 312 can be used to close the valve port 521. In this example, when the thermal expansion and contraction component 300 contracts, the rod 311 and the first sleeve 312 move synchronously in a direction away from the water flow regulating valve 500, and the end of the first sleeve 312 away from the valve port 521 at least partially moves out of the valve port 521, thereby opening the valve port 521; when the thermal expansion and contraction component 300 expands due to heat, the rod 311 and the first sleeve 312 move synchronously in a direction close to the valve port 521, and the end of the first sleeve 312 away from the thermal expansion and contraction component 300 is inserted into the valve port 521, and the valve port 521 is closed.

[0050] In some examples, the outer diameter of the end of the first sleeve 312 away from the thermal expansion and contraction component 300 gradually decreases from the thermal expansion and contraction component 300 toward the water flow regulating valve 500. The end of the first sleeve 312 away from the thermal expansion and contraction component 300 is used to cooperate with the valve port 521. In this example, the end of the first sleeve 312 close to the valve port 521 is set to gradually reduce the outer diameter, so that the end of the first sleeve 312 close to the valve port 521 is a convex arc surface or a conical surface, so that the first sleeve 312 can be more easily aligned with the valve port 521. On the one hand, the valve port 521 can be sealed, and on the other hand, the possibility of misalignment between the first sleeve 312 and the valve port 521 can be reduced, thereby reducing the problem of water leakage in the normal state of the faucet.

[0051] In some examples, the faucet also includes a second elastic member 600; the second elastic member 600 is disposed in the drainage channel 210, and the second elastic member 600 is disposed on the side of the thermal expansion and contraction member 300 away from the water flow regulating valve 500; the second elastic member 600 is used to generate a force on the thermal expansion and contraction member 300 to move toward the water flow regulating valve 500 when the thermal expansion and contraction member 300 expands due to heat.

[0052] The second elastic member 600 is arranged in the drainage channel 210 so that the second elastic member 600 can be used to block between the thermal expansion and contraction member 300 and the valve body. The second elastic member 600 is used to limit the thermal expansion and contraction member 300 to block the space for the thermal expansion and contraction member 300 to deform in the direction of the valve body. When the thermal expansion and contraction member 300 expands due to heat, the second elastic member 600 can prevent the thermal expansion and contraction member 300 from moving away from the water flow regulating valve 500. When the thermal expansion and contraction member 300 moves in the direction of the water flow regulating valve 500, the valve stem 310 moves in the direction of the water flow regulating valve 500 synchronously, so that the valve stem 310 can be better inserted into the valve port 521 to seal the valve port 521. When the ambient temperature of the thermal expansion and contraction member 300 is too high, the second elastic member 600 can also block the deformation range of the thermal expansion and contraction member 300 to reduce the possibility of excessive deformation of the thermal expansion and contraction member 300 and avoid failure of the thermal expansion and contraction member 300. In this example, the second elastic member 600 may be a spring.

[0053] In some examples, the water flow regulating valve 500 is threadedly connected to the drain pipe 200. In this example, when the water flow regulating valve 500 moves along the first direction 2a, the installation position of the water flow regulating valve 500 on the drain pipe 200 also changes synchronously, and the valve stem 310 is plugged into the valve port 521 of the water flow regulating valve 500. When the water flow regulating valve 500 moves along the first direction 2a, the volume of the part of the valve stem 310 plugged into the water flow regulating valve 500 also changes synchronously, and then the opening of the valve port 521 can be changed by changing the position of the water flow regulating valve 500. In this example, by adopting the threaded connection method, on the one hand, the relative position of the water flow regulating valve 500 and the drain pipe 200 can be adjusted conveniently, and on the other hand, the disassembly and assembly of the water flow regulating valve 500 can be facilitated.

[0054] In some examples, the water flow regulating valve 500 includes a first section 510 and a second section 520 connected to the first section 510, the first section 510 is threadedly connected to the drain pipe 200; a cavity 511 connected to the drain channel 210 is opened on the first section 510, and a valve port 521 is opened on the second section 520, and the valve port 521 is connected to the cavity 511; one end of the valve stem 310 away from the thermal expansion and contraction component 300 is at least partially embedded in the cavity 511, and the second section 520 is sealed and connected to the drain pipe 200.

[0055] The first section 510 and the second section 520 may be two parts of the water flow regulating valve 500 along the first direction 2a, wherein the first section 510 is used to connect to the drain pipe 200, and the second section 520 may be located outside the drain pipe 200, and the second section 520 may also be partially nested with the drain pipe 200.

[0056] The first section 510 is provided with a cavity 511, and the second section 520 is provided with a valve port 521. The cavity 511 is connected to the valve port 521, so that the water in the drainage channel 210 can enter the valve port 521 through the cavity 511. In this example, the first section 510 can be inserted into the drainage channel 210, and the first section 510 can also be sleeved on the outside of the drainage pipe 200. For the convenience of description, the example of this application is described by taking the first section 510 inserted into the inside of the drainage pipe 200 as an example. The inner wall surface of the drainage pipe 200 is provided with an internal thread, and the outer surface of the first section 510 is provided with an external thread. The first section 510 is threadedly connected to the drainage pipe 200 to facilitate the adjustment of the position of the water flow regulating valve 500 along the first direction 2a. The valve stem 310 is at least partially embedded in the cavity 511 , and the outer diameter of the valve stem 310 is smaller than the inner diameter of the cavity 511 , so that water in the drain pipe 200 can flow toward the valve port 521 along the gap between the valve stem 310 and the inner wall of the cavity 511 .

[0057] The second section 520 is sealedly connected to the drain pipe 200, which means that a sealing structure can be provided between the second section 520 and the drain pipe 200 to seal the assembly surfaces between the second section 520 and the drain pipe 200 to reduce the problem of water leakage caused by the gap between the second section 520 and the drain pipe 200. Optionally, a first sealing member 524 is provided between the second section 520 and the drain pipe 200, and the first sealing member 524 can be a sealing ring or other structure that can be used to seal the gap between the second section 520 and the drain pipe 200. In some examples, the second section 520 is at least partially embedded in the drain pipe 200, the drain pipe 200 has a first step surface 240 facing away from the thermal expansion and contraction component 300, and the second section 520 has a second step surface 523 facing the thermal expansion and contraction component 300. When the first section 510 is threadedly connected to the drain pipe 200, the first step surface 240 can be used to block the second step surface 523 to limit the maximum moving distance of the water flow regulating valve 500 in the drain pipe 200. In some examples, a positioning groove 522 is provided on the outer wall surface of the second section 520 , and the first seal 524 may be partially disposed in the positioning groove 522 to limit the first seal and reduce displacement of the first seal 524 in the first direction.

[0058] In some examples, the faucet further includes a second sleeve 220 , which is connected to an end of the drain pipe 200 away from the valve body 100 , and the water flow regulating valve 500 is connected to the second sleeve 220 .

[0059] In this example, the second sleeve 220 is connected to the drain pipe 200. The second sleeve 220 can be used as an extension pipe of the drain pipe 200 to form a space for installing the thermal expansion and contraction component 300. The valve stem 310 can be located in the extension area formed by the second sleeve 220. The water flow regulating valve 500 can be connected to the end of the second sleeve 220 away from the drain pipe 200. On the one hand, the installation space of the water flow regulating valve 500 can be increased. On the other hand, with the increase of the installation space, the water flow regulating valve 500 can have a larger adjustment space in the first direction 2a, so that the opening of the water flow regulating valve 500 can be easily adjusted. In this example, optionally, the second sleeve 220 can be partially inserted into the drain pipe 200, and a second sealing member 230 can be provided between the second sleeve 220 and the drain pipe 200 to reduce the possibility of water leakage at the connection between the second sleeve 220 and the drain pipe 200.

[0060] The above description is only an implementation method of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A faucet, characterized in that: include: A valve body, wherein the valve body has a main flow channel for the medium to flow; A drain pipe connected to the valve body, the drain pipe having a drain channel, one end of which is connected to the main flow channel; A thermal expansion and contraction component is arranged in the drainage channel, a valve stem is arranged on a side of the thermal expansion and contraction component away from the valve body, and an axial direction of the valve stem is a first direction; as well as a water flow regulating valve, arranged on a side of the thermal expansion and contraction component away from the drain pipe, a valve port communicating with the drain channel and the outside of the drain pipe is opened on the water flow regulating valve at a position corresponding to the valve stem, and the water flow regulating valve is movably connected to the drain pipe along the first direction; Wherein, the valve stem is used to be inserted into the valve port to close the valve port; when the thermal expansion and contraction component contracts due to cold, the valve stem is at least partially moved out of the valve port to open the valve port.

2. The faucet according to claim 1, characterized in that: The faucet also includes: The first elastic member is arranged in the drainage channel. The first elastic member is elastically connected between the water flow regulating valve and the valve stem. The first elastic member is used to generate a force for the valve stem to move toward the valve body when the thermal expansion and contraction member expands due to heat.

3. The faucet according to claim 2, characterized in that: A convex portion is convexly provided on the outer wall surface of the valve stem, the water flow regulating valve has a positioning surface facing the thermal expansion and contraction component, one end of the first elastic component is connected to the convex portion, and the other end is connected to the positioning surface.

4. The faucet according to claim 3, characterized in that: The valve stem comprises: A rod portion, one end of which is connected to the thermal expansion and contraction component and extends along the first direction; The first sleeve is sleeved on the rod, and at least a part of an end of the first sleeve away from the thermal expansion and contraction component can be plugged into the valve port, and the convex portion is arranged around the outer side of an end of the first sleeve close to the thermal expansion and contraction component.

5. The faucet according to claim 4, characterized in that: From the thermal expansion and contraction component toward the water flow regulating valve, the outer diameter of the end of the first sleeve away from the thermal expansion and contraction component gradually decreases.

6. The faucet according to any one of claims 1 to 5, characterized in that: The faucet also includes: A second elastic member is arranged in the drainage channel, and the second elastic member is arranged on a side of the thermal expansion and contraction member away from the water flow regulating valve; the second elastic member is used to generate a force for the thermal expansion and contraction member to move toward the water flow regulating valve when the thermal expansion and contraction member expands due to heat.

7. The faucet according to any one of claims 1 to 5, characterized in that: The water flow regulating valve is threadedly connected to the drain pipe.

8. The faucet according to claim 7, characterized in that: The water flow regulating valve includes a first section and a second section connected to the first section, the first section is threadedly connected to the drain pipe; the first section is provided with a cavity connected to the drainage channel, the second section is provided with the valve port, and the valve port is connected to the cavity; one end of the valve stem away from the thermal expansion and contraction component is at least partially embedded in the cavity, and the second section is sealed and connected to the drain pipe.

9. The faucet according to claim 8, characterized in that: A first sealing member is disposed between the second section and the drain pipe.

10. The faucet according to any one of claims 1 to 5, characterized in that: The faucet also includes: The second sleeve is connected to one end of the drain pipe away from the valve body, and the water flow regulating valve is connected to the second sleeve.

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