Anti-freezing pressure relief safety valve and water outlet device

Abstract

The application provides a freeze-proof pressure relief safety valve, which comprises a shell, a positioning column, an elastic member, a rear cover and a sealing gasket, wherein the shell is sleeved on the rear cover, and a micro leakage hole for pressure relief is arranged on the shell; the micro leakage hole is arranged in a horn shape which gradually increases from the inlet to the outlet; the positioning column is elastically fixed on the rear cover through the elastic member and can move up and down in the rear cover; the sealing gasket is arranged on the top of the positioning column and is suitable for closing or opening the micro leakage hole under the action of the positioning column. The application also provides a water outlet device comprising the freeze-proof pressure relief safety valve. Through the application, the volume of the safety valve is smaller, and the freeze-proof effect is better.

Description

Technical Field

[0001] This invention relates to the field of valve body technology, and more specifically, to an antifreeze pressure relief safety valve and a water outlet device. Background Technology

[0002] Existing conventional pressure relief valves are large in size and have large leakage orifices, making them easy to release pressure when water is in a liquid state. However, in sub-zero winter temperatures, water can accumulate at the front end of the valve. When water at 0°C freezes into ice at 0°C (ice has a density of 0.9 g / cm³, while water has a density of 1 g / cm³), the water solidifies and its volume increases by about 10%, potentially cracking the valve core and faucet, leading to leaks. Therefore, in sub-zero winter temperatures, the expansion of water as it freezes means that water outlets without safety pressure relief valves will fail to release excess ice or water as pressure increases. While existing safety pressure relief valves have large orifices for easy drainage, they also require greater elasticity to maintain pressure, resulting in an overall larger valve size. Summary of the Invention

[0003] This invention discloses an antifreeze pressure relief safety valve with a simple structure and convenient operation, which aims to improve the problem that existing ordinary pressure relief valves are large in size and cannot achieve the antifreeze effect.

[0004] The present invention adopts the following solution:

[0005] This application provides an antifreeze pressure relief safety valve, including a housing, a positioning post, an elastic element, and a rear cover, and also includes a sealing gasket. The housing is fitted onto the rear cover and has a micro-leakage hole for pressure relief. The micro-leakage hole is funnel-shaped, gradually increasing in size from the inlet to the outlet. The positioning post is elastically fixed to the rear cover by the elastic element and can move up and down within the rear cover. The sealing gasket is disposed on the top of the positioning post and is adapted to close or open the micro-leakage hole under the action of the positioning post.

[0006] Furthermore, the housing is tapered at the outlet of the micro-leakage hole.

[0007] Furthermore, the connection surface between the sealing gasket and the outlet of the micro-leakage hole is a plane.

[0008] Furthermore, one end of the sealing gasket connected to the outlet of the micro-leakage hole is configured as a cone shape, and its cone apex is adapted to be inserted into the outlet so that the cone surface seals the outlet.

[0009] Furthermore, one end of the sealing gasket connected to the outlet of the micro-leakage hole is configured as an elliptical parabola, and its elliptical vertex is adapted to be inserted into the outlet, so that the elliptical parabola seals the outlet.

[0010] Furthermore, a frustum is provided on the top of the housing, and the micro-leakage hole extends from the top surface of the frustum into the interior of the housing.

[0011] Furthermore, the aperture of the micro-leakage port is 0.5mm to 1mm.

[0012] Furthermore, the sealing gasket is made of soft rubber material.

[0013] Furthermore, a sealing ring is provided on the outer side of the housing.

[0014] The present invention also provides a water outlet device, including any one of the above-described antifreeze and pressure relief safety valves.

[0015] Beneficial effects:

[0016] This invention utilizes a valve body controlled by an elastic element to release pressure, ensuring that excess water or ice is released when pressure increases, regardless of the presence of water or ice inside the outlet device. This prevents the product from bursting due to excessive pressure. Specifically, the invention incorporates a funnel-shaped micro-leakage orifice on the housing that gradually enlarges from the inlet to the outlet. Reducing the size of the leak orifice decreases the overall volume of the antifreeze pressure relief valve, and the smaller micro-leakage orifice also facilitates the expulsion of small ice blocks. Furthermore, the sealing effect is improved by using a sealing gasket that mates with the structure at the outlet of the micro-leakage orifice, thereby enhancing the pressure relief capacity. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the antifreeze and pressure relief safety valve according to an embodiment of the present invention;

[0018] Figure 2 This is a cross-sectional structural diagram of the antifreeze and pressure relief safety valve according to an embodiment of the present invention;

[0019] Figure 3 This is an exploded structural diagram of the antifreeze and pressure relief safety valve according to an embodiment of the present invention;

[0020] Figure 4 This is another structural schematic diagram of the antifreeze and pressure relief safety valve according to an embodiment of the present invention;

[0021] Figure 5 This is another structural schematic diagram of the antifreeze and pressure relief safety valve according to an embodiment of the present invention;

[0022] Figure 6 This is a cross-sectional structural diagram of the antifreeze pressure relief safety valve with a frustum body according to an embodiment of the present invention;

[0023] Figure 7 This is a schematic diagram of the external structure of the antifreeze pressure relief safety valve with a frustum body according to an embodiment of the present invention;

[0024] Icons: 1. Housing, 11. Micro-leakage hole, 111. Inlet, 112. Outlet, 112. Cone, 12. Frustum, 13. Sealing gasket, 2. Conical surface, 21a. Elliptical parabola, 21b. Positioning post, 3. Elastic element, 4. Back cover, 5. Positioning block, 51. Sealing ring, 6. Detailed Implementation

[0025] Example

[0026] Combination Figures 1 to 3 As shown, this embodiment provides a water outlet device, including an antifreeze pressure relief safety valve.

[0027] The antifreeze and pressure relief safety valve described herein includes a housing 1, a positioning post 3, an elastic element 4, and a rear cover 5, as well as a sealing gasket 2. The housing 1 is fitted onto the rear cover 5, and a micro-leakage hole 11 for pressure relief is provided on the housing 1. The micro-leakage hole 11 is configured as a funnel shape that gradually increases in size from the inlet 111 to the outlet 112. The positioning post 3 is elastically fixed to the rear cover 5 by the elastic element 4, and can move up and down within the rear cover 5. The sealing gasket 2 is disposed on the top of the positioning post 3, and is adapted to close or open the micro-leakage hole 11 under the action of the positioning post 3.

[0028] In this embodiment, the antifreeze pressure relief safety valve is small in size and suitable for placement in various parts of different faucets, including the valve core, faucet, and pipes. When the pressure is too high, the micro-leakage hole 11 can easily relieve pressure. The specific structure of the antifreeze pressure relief safety valve will be described next.

[0029] Continue to combine Figures 2 to 3As shown, in the first embodiment of the present invention, the housing 1 is configured as a hollow cylinder, suitable for fitting and fixing onto the rear cover 5. A seal is provided at the connection point between the housing 1 and the rear cover 5 to prevent water leakage. A micro-leakage hole 11 is provided on the top of the housing 1, penetrating the top of the housing 1, with the top surface of the housing 1 serving as the inlet 111. The micro-leakage hole 11 extends from the inlet 111 into the interior of the housing 1 to the outlet 112, forming a funnel shape with a continuously increasing diameter. This funnel-shaped design allows small ice cubes to enter through the inlet 111, and due to the larger diameter at the bottom, they will more easily fall through the outlet 112, preventing ice cubes from clogging the micro-leakage hole 11 due to internal stress or other resistance. Specifically, the diameter of the micro-leakage hole 11 is set between 0.5mm and 1mm. This size design allows for several advantages. First, the smaller hole diameter enables the sealing of higher water pressure with less force, preventing the overall volume of the housing 1 from increasing due to an excessively large hole diameter. Second, the smaller hole diameter results in a smaller force transmitted to the outlet 112, allowing the micro-leakage hole 11 to be sealed with less force, thus reducing the elastic force requirement of the elastic element 4. The interior of the housing 1 is designed as a cone 12 at the outlet 112. When the bottom surface of the cone 12 is connected to the sealing gasket 2 via a plane, the stress between the two planes is reduced, preventing excessive mutual attraction that could prevent pressure relief. Third, the cone shape creates a cavity around the cone, providing sufficient space for ice or water to drain during pressure relief. Furthermore, an annular groove for installing the sealing ring 6 is provided on the outer surface of the housing 1, and the sealing ring 6 is installed within the annular groove.

[0030] The rear cover 5 is configured as a rotating body, with a drainage cavity inside for drainage, and a drainage outlet and a positioning block 51 for mounting the positioning post 3 at the bottom.

[0031] The positioning column 3 is arranged on the positioning block 51 of the rear cover 5. Specifically, its axis can be set to coincide with the central axis of the micro-leakage hole 11. The positioning column 3 can be set in a "dry" shape, and the sealing gasket 2 is sleeved on its upper part. The elastic member 4 is arranged outside the positioning column 3 and is used to provide a pre-tightening force for the positioning column 3. When the water pressure or air pressure transmitted by the inlet 111 of the micro-leakage hole 11 is less than the elastic force of the elastic member 4, the elastic member 4 pushes the positioning column 3 upward, so that the sealing gasket 2 blocks the outlet 112. On the contrary, when the pressure transmitted by the micro-leakage hole 11 is greater than the elastic force of the elastic member 4, the positioning column 3 is pressed down. At this time, the sealing gasket 2 is separated from the outlet 112 of the micro-leakage hole 11, so as to open the micro-leakage hole 11 for pressure relief, so that the ice cubes or water can fall. Of course, in another embodiment, the bottom of the positioning column 3 can be set to be hollow, and the elastic member 4 can be arranged inside the positioning column 3 to provide elastic force and save installation space. The elastic member 4 described here can use a spring and is selected according to specific pressure requirements.

[0032] The sealing gasket 2 is made of rubber soft material and is sleeved and fixed at the upper end of the positioning column 3, and can be used to seal the outlet 112 of the micro-leakage hole 11. The connection surface between the sealing gasket 2 and the outlet 112 of the micro-leakage hole 11 can be set to be a plane. Specifically, a concave plane is arranged at the top of the sealing gasket 2, and the concave plane is matched with the bottom surface of the cone 12 inside the housing 1 to form a sealing surface, so as to improve the sealing effect.

[0033] Combined Figure 4 and Figure 5 As shown, in the second embodiment of the present invention, the design of how the sealing gasket 2 seals the outlet 112 of the micro-leakage hole 11 can be: the upper end of the sealing gasket 2 is set to be a cone 12, and the vertex of its cone 12 is adapted to be inserted into the outlet 112, so that the conical surface 21a seals the outlet 112. By using the conical surface 21a to seal the outlet 112, the problem that the water pressure cannot push open the sealing gasket 2 due to excessive suction stress between the two planes during sealing can be reduced, which may lead to excessive water pressure in the water outlet device. In another preferred embodiment, the conical surface 21a can also be set to be an elliptical paraboloid 21b, and the vertex of its ellipse is adapted to be inserted into the outlet 112, so that the elliptical paraboloid 21b seals the outlet 112. By using the elliptical paraboloid 21b, the sealing surface can be more closely fitted to the outlet 112 of the micro-leakage hole 11, and the vertex does not need to extend excessively into the outlet 112, reducing the displacement amount of the sealing gasket 2 moving downward during pressure relief.

[0034] Combined Figure 6 and Figure 7As shown, in the third embodiment of the present invention, the housing 1 is optimized by providing a frustum 13 on the top of the housing 1, and the micro-leakage hole 11 extends from the top surface of the frustum 13 into the interior of the housing 1. By extending the length of the micro-leakage hole 11, the problem of the outer surface of the housing 1 freezing first and the inner surface freezing later can be solved. The principle here is that when water freezes, it usually freezes from the outside to the inside. Therefore, by providing an extended frustum 13, the inlet 111 of the micro-leakage hole 11 of the antifreeze pressure relief safety valve can extend into the water accumulation of the water outlet device, so that when freezing occurs, the inlet 111 will not freeze first and lose its pressure relief function, thereby improving the antifreeze effect.

[0035] The working principle of this invention is as follows: When the water pressure inside the water outlet device is high, especially during winter when it freezes, the water inside the device expands when it freezes, increasing the internal pressure. If this pressure persists, it can damage the components of the water outlet device. Therefore, a pressure relief safety valve is installed at a location prone to water accumulation. When the water freezes, the water pressure at the inlet 111 of the micro-leakage hole 11 of the antifreeze pressure relief safety valve gradually increases due to the freezing process. When the water pressure exceeds the upward elastic force of the elastic element 4, the positioning column 3 is pressed down, causing the sealing gasket 2 to release the seal on the outlet 112 of the micro-leakage hole 11. Some of the accumulated water or small ice cubes will then drain through the micro-leakage hole 11, reducing the pressure inside the water outlet device and ensuring that the water inside the device, after freezing, does not exceed its original volume. After the pressure relief is complete, the positioning column 3 moves upward under the action of the elastic element 4, causing the sealing gasket 2 to close the outlet 112 of the micro-leakage hole 11 again. This solution effectively drains water accumulated in the water outlet device during winter freezing, preventing component bursts. In this invention, the safety valve can be configured to not release pressure between 0-2 MPa, begin releasing pressure above 2 MPa, and allow excess ice water to flow out through the micro-leakage hole 11 regardless of whether the ice water is above 4 MPa. Of course, the micro-leakage hole 11 can also discharge gas.

[0036] It should be understood that the above are merely preferred embodiments of the present invention, and the scope of protection of the present invention is not limited to the above embodiments. All technical solutions that fall within the scope of the present invention are within the scope of protection of the present invention.

[0037] The accompanying drawings used in the above description of the embodiments only illustrate certain embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

Claims

1. A freeze-proof pressure relief safety valve, comprising a housing, a positioning pin, an elastic element, and a rear cover, characterized in that, It also includes a sealing gasket, wherein, The housing is fitted onto the rear cover, and a micro-leakage hole for pressure relief is provided on the housing; the micro-leakage hole is configured as a funnel shape that gradually increases in size from the inlet to the outlet; The positioning post is elastically fixed to the rear cover by the elastic element, and can move up and down within the rear cover; The sealing gasket is disposed on the top of the positioning post and is adapted to close or open the micro-leakage hole under the action of the positioning post; The diameter of the micro-leakage hole is 0.5mm-1.0mm; the outlet of the micro-leakage hole is a conical seat that cooperates with the sealing end of the sealing gasket to suppress adsorption and form a cavity around the conical surface to provide sufficient pressure relief space; a frustum is provided on the top of the housing, and the micro-leakage hole penetrates from the top surface of the frustum to the interior of the housing.

2. The antifreeze and pressure relief safety valve according to claim 1, characterized in that, The connection surface between the sealing gasket and the outlet of the micro-leakage hole is a plane.

3. The antifreeze and pressure relief safety valve according to claim 1, characterized in that, One end of the sealing gasket connected to the outlet of the micro-leakage hole is set in a conical shape, and its conical apex is adapted to be inserted into the outlet so that the conical surface seals the outlet.

4. The antifreeze and pressure relief safety valve according to claim 1, characterized in that, One end of the sealing gasket connected to the outlet of the micro-leakage hole is configured as an elliptical parabola, and its elliptical vertex is adapted to be inserted into the outlet, so that the elliptical parabola seals the outlet.

5. The antifreeze pressure relief safety valve according to claim 1, characterized in that, The sealing gasket is made of soft rubber material.

6. The antifreeze and pressure relief safety valve according to claim 1, characterized in that, A sealing ring is provided on the outside of the housing.

7. A water outlet device, characterized in that, It includes the antifreeze and pressure relief safety valve as described in any one of claims 1-6.

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