A water valve for preventing freezing and cracking and a valve device having the same

Abstract

The present invention discloses a water valve for preventing frost cracking and a valve device having the same. The water valve comprises a valve body and a valve core. The valve body comprises a main body and a valve cover. The main body is provided with a valve cavity and a water inlet and a water outlet connected to the valve cavity. One end of the main body is further formed with an opening for the valve core to be installed in the valve cavity. The valve cover is fixedly connected to the opening and limits the valve core in the valve cavity. The main body also comprises a base that can slide back and forth along the axial direction of the main body. The end of the valve core away from the opening abuts against a bottom wall of the valve cavity opposite to the opening through the base. The base is provided with a water inlet flow hole corresponding to the water inlet and connected thereto. A water storage cavity is provided on the side of the base facing away from the opening. The water storage cavity is in sealed communication with the water inlet. The water inlet is connected to the water inlet flow hole through the water storage cavity. Water flowing in from the water inlet flows through the water storage cavity and the water inlet flow hole in sequence before flowing into the valve core. The present invention can realize the anti-freeze cracking function of the water valve, and the anti-freeze cracking structure is simple and reliable.

Description

Technical Field

[0001] The present invention relates to the technical field of water valve devices, in particular to a water valve that is frost-proof and a valve device having the same. Background Art

[0002] Existing water valves usually include a valve body and a valve core. The valve body includes a main body and a valve cover. The main body is provided with a valve cavity and a water inlet and a water outlet connected to the valve cavity. One end of the main body is also formed with an opening for the valve core to be installed in the valve cavity. The valve cover is fixedly covered and connected to the opening to limit the valve core in the valve cavity. The connection or disconnection between the water inlet and the water outlet or the switching of the water path is controlled by driving the valve core.

[0003] Some water valves are equipped with anti-freeze cracking structures to prevent water inside the valve from freezing and cracking in low-temperature environments, which could lead to leakage. However, existing anti-freeze cracking structures in water valves are often complex, leading to a complex valve structure and hindering miniaturization. For example, some water valves have manual drain mechanisms that require manual opening of the drain or pressure relief vent to drain residual water when not in use. Alternatively, some valves have automatic drain mechanisms, typically utilizing a spring and a sealing gasket, that automatically open the drain or pressure relief vent when the water inside the valve freezes. Summary of the Invention

[0004] In order to solve the problem of the relatively complex anti-freeze cracking structure in existing water valves, the present invention provides an anti-freeze cracking water valve and a valve device having the same. The anti-freeze cracking structure is simple and reliable, which can make the overall structure of the water valve simple and compact, and will not increase the volume of the valve while having the anti-freeze cracking function.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] The closure of the valve core is fixedly provided with a valve body, and the closure of the valve body is fixedly provided with a valve body, and the closure of the valve body is fixedly provided with a valve body, and the closure of the valve body is fixedly provided with a valve body.

[0007] Preferably, the base and the valve core are an integrated structure, or the base and the valve core are made independently.

[0008] Preferably, the base and the valve core are made independently, the end of the valve core away from the opening abuts against the top surface of the base, the bottom surface of the base abuts against the bottom wall of the valve cavity, the water storage cavity is arranged on the bottom surface of the base, and a sealing ring is provided between the bottom surface of the base and the bottom wall of the valve cavity so that the water inlet and the water storage cavity are sealed and communicated.

[0009] Preferably, a sealing ring groove is provided on the bottom surface of the base surrounding the water storage cavity, and the sealing ring is provided in the sealing ring groove.

[0010] Preferably, a first positioning structure is provided between the base and the main body, and the first positioning structure prevents the base and the main body from rotating relative to each other in the circumferential direction of the main body; a second positioning structure is provided between the base and the valve core, and the second positioning structure prevents the base and the valve core from rotating relative to each other in the circumferential direction of the main body.

[0011] Preferably, the first positioning structure includes a first positioning column provided on the bottom surface of the base and a first positioning hole provided on the bottom wall of the inner cavity, and the second positioning structure includes a second positioning hole provided on the top surface of the base and a second positioning column provided on the bottom end surface of the valve core; or

[0012] The first positioning structure includes a first positioning hole provided on the bottom surface of the base and a first positioning column provided on the bottom wall of the inner cavity, and the second positioning structure includes a second positioning column provided on the top surface of the base and a second positioning hole provided on the bottom end surface of the valve core.

[0013] Preferably, the first positioning structure provided on the bottom surface of the base corresponds to the position of the second positioning structure provided on the top surface of the base.

[0014] Preferably, the base is further provided with a water outlet hole corresponding to the water outlet, and the water flowing out of the valve core flows to the water outlet on the main body through the water outlet hole.

[0015] Preferably, the main body is cylindrical, the top end of the main body forms the opening, the bottom end of the main body is provided with the water inlet and the water outlet, and one end of the valve core extends out of the opening.

[0016] The present invention also provides a valve device, comprising any one of the above-mentioned anti-freeze cracking water valves.

[0017] The beneficial effects of the present invention are:

[0018] The present invention provides a base with a water storage cavity between the valve core and the main body. The water storage cavity can increase the contact area between the base and water. When the water in the valve cavity freezes and expands in volume, the base pushes the entire valve core to move axially toward the open direction relative to the main body, thereby achieving pressure relief and effectively preventing the main body and the valve core from being damaged by freezing.

[0019] The base and valve core are made independently, making molding simpler and easier.

[0020] The first positioning structure provided on the bottom surface of the base corresponds to the second positioning structure provided on the top surface of the base, which can make the base structure simple and compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that 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.

[0022] Figure 1 is a perspective exploded view of a valve device according to an embodiment of the present invention;

[0023] Figure 2 This is a cross-sectional view of a valve device according to an embodiment of the present invention (the interior of the water valve is in normal use);

[0024] Figure 3 This is a second cross-sectional view of a valve device according to an embodiment of the present invention (the interior of the water valve is in normal use);

[0025] Figure 4 This is a cross-sectional view of a valve device according to an embodiment of the present invention (the interior of the water valve is in an ice-covered state);

[0026] Figure 5 This is a second cross-sectional view of a valve device according to an embodiment of the present invention (the interior of the water valve is in an ice-covered state);

[0027] Figure 6 A three-dimensional view of the base of a water valve according to an embodiment of the present invention as viewed from the top;

[0028] Figure 7 A three-dimensional view of the base of a water valve according to an embodiment of the present invention as viewed from the bottom;

[0029] 1- Water valve: 10- Valve body, 11- Main body, 111- Valve cavity, 112- Water inlet, 113- Water outlet, 114- Opening, 12- Valve cover; 20- Valve core, 21- Second positioning post; 30- Base, 31- Water inlet hole, 32- Water outlet hole, 33- Water storage cavity, 34- Sealing ring groove, 35- First positioning post, 36- Second positioning hole; 40- Sealing ring; 51- First mating sealing ring; 52- Second mating sealing ring;

[0030] 2-Valve device. DETAILED DESCRIPTION

[0031] 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. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention for which protection is sought, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0033] Reference Figures 1 to 7As shown, an embodiment of a water valve for preventing frost cracking according to the present invention includes a water valve 1 comprising a valve body 10 and a valve core 20. The valve body 10 comprises a main body 11 and a valve cover 12. The main body 11 is provided with a valve cavity 111 and a water inlet 112 and a water outlet 113 communicating with the valve cavity 111. An opening 114 is formed at one end of the main body 11 for inserting the valve core 20 into the valve cavity 111. The valve cover 12 is fixedly connected to the opening 114 and retains the valve core 20 within the valve cavity 111. The water valve 1 also includes a base 30 that can slide back and forth along the axial direction of the main body 11. The end of the valve core 20 away from the opening 114 abuts against the bottom wall of the valve cavity 111 opposite to the opening 114 through the base 30. The base 30 is provided with a water inlet flow hole 31 corresponding to the water inlet 112. A water storage cavity 33 is provided on the side of the base 30 facing away from the opening 114. The water storage cavity 33 is sealed and connected to the water inlet 112. The water inlet 112 is connected to the water inlet flow hole 31 through the water storage cavity 33. The water flowing in from the water inlet 112 flows through the water storage cavity 33 and the water inlet flow hole 31 in sequence and then flows into the valve core 20. After being controlled by the valve core 20, the water flows out from the water outlet 113 of the main body 11.

[0034] In this embodiment, the base 30 and valve core 20 are manufactured independently. The end of the valve core 20 away from the opening 114 abuts the top surface of the base 30. The bottom surface of the base 30 abuts the bottom wall of the valve cavity 111. The water storage cavity 33 is provided on the bottom surface of the base 30. A sealing ring 40 is provided between the bottom surface of the base 30 and the bottom wall of the valve cavity 111 to ensure sealed communication between the water inlet 112 and the water storage cavity 33.

[0035] See also Figure 7 In this embodiment, a sealing ring groove 34 is provided on the bottom surface of the base 30 surrounding the water storage cavity 33 , and the sealing ring 40 is provided in the sealing ring groove 34 .

[0036] In this embodiment, a first positioning structure is provided between the base 30 and the main body 11, which prevents relative rotation between the base 30 and the main body 11 in the circumferential direction of the main body 11. A second positioning structure is provided between the base 30 and the valve core 20, which prevents relative rotation between the base 30 and the valve core 20 in the circumferential direction of the main body 11. The first and second positioning structures also facilitate alignment of the base 30 with the main body 11 and the valve core 20 during installation, making installation more convenient.

[0037] For details, see Figure 1 and Figure 6In this embodiment, the first positioning structure includes a first positioning post 35 provided on the bottom surface of the base 30 and a first positioning hole (not shown) provided on the bottom wall of the inner cavity, and the second positioning structure includes a second positioning hole 36 provided on the top surface of the base 30 and a second positioning post 21 provided on the bottom end surface of the valve core 20. In other embodiments, the first positioning structure may include the first positioning hole provided on the bottom surface of the base 30 and the first positioning post 35 provided on the bottom wall of the inner cavity, and the second positioning structure may include the second positioning post provided on the top surface of the base 30 and the second positioning hole provided on the bottom end surface of the valve core 20.

[0038] In this embodiment, the first positioning structure provided on the bottom surface of the base 30 corresponds to the second positioning structure provided on the top surface of the base 30, that is, the first positioning column 35 and the second positioning hole 36 correspond to each other, so the design structure is simpler.

[0039] See also Figure 2 、 Figure 4 、 Figure 6 and Figure 7 In this embodiment, the base 30 is further provided with a water outlet hole 32 corresponding to the water outlet 113. Water flowing out of the valve core 20 flows through the water outlet hole 32 to the water outlet 113 on the main body 11. Of course, the base 30 may not be provided with the water outlet hole 32.

[0040] See also Figure 5 、 Figure 6 and Figure 7 In this embodiment, the main body 11 includes two water inlets 112, which can be a cold water inlet and a hot water inlet respectively. Correspondingly, two water inlet holes 31 are also provided on the base 30.

[0041] In order to reliably utilize the squeezing force of water frozen into ice to drive the base 30 , the sum of the area of the water storage cavity 33 and the area of the water inlet flow hole 31 should be as large as possible.

[0042] In this embodiment, the main body 11 is cylindrical, with an opening 114 formed at the top end of the main body 11 , a water inlet 112 and a water outlet 113 provided at the bottom end of the main body 11 , and one end of the valve core 20 extending out of the opening 114 .

[0043] In other embodiments, the base 30 and the valve core 20 may also be an integrated structure, which has a simpler structure and is more convenient to install.

[0044] The working principle of the present invention is:

[0045] See also Figure 2 and Figure 3When the interior of the water valve 1 is in normal use, the bottom surface of the base 30 abuts against the bottom wall of the valve cavity 111, and the bottom surface of the sealing ring 40 fits against the bottom wall of the valve cavity 111 to seal the water storage cavity 33 and the water inlet 112. The water flowing in from the water inlet 112 flows through the water storage cavity 33 and the water inlet flow hole 31 in sequence and then flows into the valve core 20. After being controlled by the valve core 20, the water flows out from the water outlet 113 of the main body 11.

[0046] See also Figure 4 and Figure 5 Since there is an axial assembly gap or a matching sealing ring (such as Figure 3 and Figure 5 The first matching sealing ring 51 shown in the figure is provided between the valve core 20 and the base 30, the sealing ring 40 is provided between the base 30 and the main body 11, etc.) or there is an axial assembly gap inside the valve core 20 (for example, the gap between the movable valve disc, the fixed valve disc and other components in the valve core 20, etc.) or a matching sealing ring is provided (for example Figure 3 and Figure 5 The second matching sealing ring 52 shown in the figure is arranged in the valve core 20. The assembly clearance or the interference of the matching sealing ring can be appropriately changed so that the valve core 20 and the base 30 have a certain axial movement margin in the valve cavity 111. Therefore, when the interior of the water valve 1 is in a frozen state, the water inside the water valve 1 expands in volume after freezing, which can squeeze the base 30 so that the base 30 slides axially relative to the main body 11 toward the opening 114. The bottom surface of the base 30 is separated from the bottom wall of the valve cavity 111, and the bottom surface of the sealing ring 40 is also separated from the bottom wall of the valve cavity 111, thereby achieving the water pressure relief on the water inlet side of the valve core 20, avoiding the problem of the water valve being damaged by freezing.

[0047] The present invention further provides a valve device 2, comprising any of the above-mentioned anti-freeze cracking water valves 1. The valve device 2 can be a valve device for controlling a shower device or a valve device for controlling a faucet, etc., but is not limited thereto.

[0048] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A water valve for preventing frost cracking, comprising a valve body and a valve core, the valve body comprising a main body and a valve cover, the main body being provided with a valve cavity and a water inlet and a water outlet communicating with the valve cavity, one end of the main body being further provided with an opening for receiving the valve core in the valve cavity, the valve cover being fixedly connected to the opening and constraining the valve core in the valve cavity, characterized in that: The valve body further comprises a base that can slide back and forth along the axial direction of the main body, wherein an end of the valve core away from the opening abuts against a bottom wall of the valve cavity opposite to the opening through the base, the base is provided with a water inlet flow hole corresponding to and communicating with the water inlet, and a water storage cavity is provided on a side of the base facing away from the opening, the water storage cavity is in sealed communication with the water inlet, and the water inlet is connected to the water inlet flow hole through the water storage cavity, so that water flowing in from the water inlet flows through the water storage cavity and the water inlet flow hole in sequence before flowing into the valve core; A first positioning structure is provided between the base and the main body, and the first positioning structure prevents the base and the main body from rotating relative to each other in the circumferential direction of the main body; a second positioning structure is provided between the base and the valve core, and the second positioning structure prevents the base and the valve core from rotating relative to each other in the circumferential direction of the main body; The first positioning structure includes a first positioning post provided on the bottom surface of the base and a first positioning hole provided on the bottom wall of the inner cavity; the second positioning structure includes a second positioning hole provided on the top surface of the base and a second positioning post provided on the bottom end surface of the valve core; Or, The first positioning structure includes a first positioning hole provided on the bottom surface of the base and a first positioning column provided on the bottom wall of the inner cavity, and the second positioning structure includes a second positioning column provided on the top surface of the base and a second positioning hole provided on the bottom end surface of the valve core.

2. The water valve according to claim 1, characterized in that: The base and the valve core are an integrated structure, or the base and the valve core are made independently.

3. The water valve according to claim 1, characterized in that: The base and the valve core are made independently, the end of the valve core away from the opening abuts against the top surface of the base, the bottom surface of the base abuts against the bottom wall of the valve cavity, the water storage cavity is arranged on the bottom surface of the base, and a sealing ring is provided between the bottom surface of the base and the bottom wall of the valve cavity to ensure that the water inlet and the water storage cavity are sealed and communicated.

4. The water valve according to claim 3, characterized in that: A sealing ring groove is provided on the bottom surface of the base surrounding the water storage cavity, and the sealing ring is arranged in the sealing ring groove.

5. The water valve according to claim 1, characterized in that: The first positioning structure provided on the bottom surface of the base corresponds to the second positioning structure provided on the top surface of the base.

6. The water valve according to claim 1, characterized in that: The base is further provided with a water outlet flow hole corresponding to the water outlet, and the water flowing out of the valve core flows to the water outlet on the main body through the water outlet flow hole.

7. The water valve according to claim 1, characterized in that: The main body is cylindrical, the top end of the main body forms the opening, the bottom end of the main body is provided with the water inlet and the water outlet, and one end of the valve core extends out of the opening.

8. A valve device, characterized in that: A water valve for preventing frost cracking comprising the water valve according to any one of claims 1 to 7.

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