CN115750862A - Anti-freezing pressure relief safety valve and water outlet device - Google Patents

Abstract

The invention provides an anti-freezing pressure relief safety valve which comprises a shell, a positioning column, an elastic piece, 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 formed in the shell; the micro leakage hole is in a horn shape which becomes larger gradually from the inlet to the outlet; the positioning column is elastically fixed on the rear cover through the elastic piece and can move up and down in the rear cover; the sealing gasket is arranged at 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 invention also provides a water outlet device which comprises the anti-freezing pressure relief safety valve. By the invention, the volume of the safety valve is smaller, and the anti-freezing effect is better.

Description

Anti-freezing pressure relief safety valve and water outlet device

Technical Field

The invention relates to the technical field of valve bodies, in particular to an anti-freezing pressure relief safety valve and a water outlet device.

Background

The conventional common pressure release valve is large in size and large in leakage hole, and the common pressure release valve is easy to release pressure when water is in a liquid state. However, in the winter subzero temperature environment, water is accumulated at the front end of the pressure release valve in use, when the water at 0 ℃ becomes ice at 0 ℃, the density of the ice is 0.9 g/cubic centimeter, and the density of the water is 1 g/cubic centimeter, so that the water can become solid and the volume can be increased by about 10%, and the valve core and the faucet are squeezed to crack, so that the faucet leaks water. Like this when the below zero temperature in winter, water becomes ice volume inflation, and the water outlet device of no safe relief valve can lose the function of releasing ice or water because can't discharge unnecessary ice when pressure increases, and the pressure release hole of current safe relief valve is big, though easy drainage, but also requires more elasticity to carry out the pressurize on the one hand, causes whole relief valve volume grow.

Disclosure of Invention

The invention discloses an anti-freezing pressure relief safety valve which is simple in structure and convenient to operate and aims to solve the problems that an existing common pressure relief valve is large in size and cannot achieve an anti-freezing effect.

The invention adopts the following scheme:

the application provides an anti-freezing pressure relief safety valve which comprises a shell, a positioning column, an elastic part, 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 formed in the shell; the micro leakage hole is in a horn shape which becomes larger gradually from the inlet to the outlet; the positioning column is elastically fixed on the rear cover through the elastic piece and can move up and down in the rear cover; the sealing gasket is arranged at the top of the positioning column and is suitable for closing or opening the micro leakage hole under the action of the positioning column.

Further, the housing is tapered at an outlet of the micro-leak hole.

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

Furthermore, one end of the sealing gasket, which is connected with the outlet of the micro leakage hole, is conical, and the conical vertex of the sealing gasket is suitable for being jacked into the outlet, so that the conical surface seals the outlet.

Furthermore, one end of the sealing gasket, which is connected with the outlet of the micro leakage hole, is provided with an elliptic paraboloid, and the elliptic vertex of the elliptic paraboloid is suitable for being jacked into the outlet, so that the elliptic paraboloid seals the outlet.

Further, the top of casing is provided with the round platform body, little leakage hole from the top surface of round platform body runs through to the inside of casing.

Furthermore, the aperture of the micro leakage port is 0.5 mm-1 mm.

Further, the sealing gasket is made of soft rubber material.

Further, a sealing ring is arranged on the outer side of the shell.

The invention also provides a water outlet device which comprises the anti-freezing pressure relief safety valve.

Has the advantages that:

the invention realizes that the redundant water or ice can be discharged when the pressure is increased no matter the water or ice exists in the water outlet device by arranging the valve body for controlling the pressure relief by the elastic piece, thereby preventing the product from being burst due to overlarge pressure. Specifically, the shell is provided with the horn-shaped micro leakage hole which is gradually enlarged from the inlet to the outlet, so that the size of the leakage port is reduced, the volume of the whole anti-freezing pressure relief safety valve can be reduced, and small ice blocks can be easily extruded by the small micro leakage hole; further through setting up the structure cooperation of sealed pad with little leakage hole exit, improve sealed effect to and can improve the ability of pressure release.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an anti-freezing pressure relief safety valve according to an embodiment of the invention;

FIG. 2 is a schematic cross-sectional view of an anti-freeze pressure relief valve according to an embodiment of the present invention;

FIG. 3 is an exploded view of the anti-freeze pressure relief valve of the embodiment of the present invention;

FIG. 4 is another schematic diagram of the freeze protection pressure relief valve according to the embodiment of the present invention;

FIG. 5 is another schematic structural diagram of the anti-freeze pressure relief safety valve according to the embodiment of the invention;

FIG. 6 is a schematic cross-sectional view of an anti-freezing pressure relief safety valve with a truncated cone according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of an appearance of the anti-freezing pressure relief safety valve with a truncated cone according to the embodiment of the invention;

icon: the sealing device comprises a shell 1, a micro-leakage hole 11, an inlet 111, an outlet 112, a cone 12, a truncated cone 13, a sealing gasket 2, a conical surface 21a, an elliptic paraboloid 21b, a positioning column 3, an elastic piece 4, a rear cover 5, a positioning block 51 and a sealing ring 6.

Detailed Description

Examples

Referring to fig. 1 to 3, the present embodiment provides a water outlet device, which includes an anti-freezing pressure relief valve.

The anti-freezing pressure relief safety valve comprises a shell 1, a positioning column 3, an elastic piece 4, a rear cover 5 and a sealing gasket 2, wherein the shell 1 is sleeved on the rear cover 5, and a micro-leakage hole 11 for pressure relief is formed in the shell 1; the micro-leakage hole 11 is arranged in a horn shape which becomes larger gradually from the inlet 111 to the outlet 112; the positioning column 3 is elastically fixed on the rear cover 5 through the elastic piece 4, and can move up and down in the rear cover 5; the sealing gasket 2 is arranged at the top of the positioning column 3 and is suitable for closing or opening the micro-leakage hole 11 under the action of the positioning column 3.

In this embodiment, the anti-freezing pressure relief safety valve is small in size, and can be used for properly placing various parts of different faucets, including valve cores, water nozzles, pipelines and the like of the faucets. When the pressure is too large, the micro leakage hole 11 can easily release the pressure. Next, a specific structure of the freeze-proof relief valve will be explained.

With reference to fig. 2 to 3, in the first embodiment of the present invention, the housing 1 is configured as a hollow cylinder, and is adapted to be sleeved and fixed on the rear cover 5, and a seal is disposed at a position where the interior of the housing is connected to the rear cover 5 to prevent water leakage; casing 1's top is provided with little leakage hole 11, little leakage hole 11 runs through casing 1's top, and with casing 1's top surface is entry 111, and little leakage hole 11 extends to export 112 from entry 111 toward casing 1 is inside, becomes the trumpet-shaped of the continuous grow of diameter. The trumpet-like design allows small ice cubes to fall more easily from the outlet 112 after entering from the inlet 111 due to the larger diameter below, preventing the ice cubes from becoming blocked inside the micro-leakage hole 11 due to internal stress or other resistance. Specifically, the diameter of the micro-leakage hole 11 is set to be between 0.5mm and 1mm, and through the design of the size, on one hand, under the condition that the hole diameter is small, a large water pressure can be sealed by a small force, so that the problem that the volume of the whole shell 1 is increased due to the overlarge hole diameter is solved; here, since the aperture is small, the force transmitted below the aperture exit 112 is small, so that the micro leak hole 11 can be sealed with a small force, thereby reducing the requirement of elasticity of the elastic member 4. The inner part of the shell 1 is provided with a cone 12 at the outlet 112, and when the bottom surface of the cone 12 and the sealing gasket 2 are connected and sealed through planes, the stress between the two planes can be reduced, so that the situation that the pressure cannot be released due to overlarge mutual suction force between the two planes is prevented; on the other hand, through the arrangement of the conical surface, a cavity can be formed around the conical surface, so that ice blocks or water can be discharged conveniently in a sufficient space during pressure relief. Further, an annular groove for installing a sealing ring 6 is arranged on the outer surface of the shell 1, and the sealing ring 6 is arranged in the annular groove.

The rear cover 5 is arranged in a rotary body shape, a drainage cavity for draining water is arranged in the rear cover, and a drainage outlet and a positioning block 51 for installing the positioning column 3 are arranged at the bottom of the rear cover.

The positioning column 3 is disposed on the positioning block 51 of the rear cover 5, and specifically, an axis thereof may be disposed to coincide with a central axis of the micro-leakage hole 11. The positioning column 3 can be arranged in a dry shape, and the sealing gasket 2 is sleeved above the positioning column. The elastic part 4 is arranged on the outer side of the positioning column 3 and is used for providing a pretightening force for the positioning column 3, and when the water pressure or the air pressure transmitted by the inlet 111 of the micro-leakage hole 11 is smaller than the elastic force of the elastic part 4, the elastic part 4 pushes the positioning column 3 upwards, 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, and the sealing gasket 2 is separated from the outlet 112 of the micro-leakage hole 11, so that the micro-leakage hole 11 is opened to release the pressure, and the ice or water can fall down. Of course, in another embodiment, the bottom of the positioning column 3 may be hollow, and the elastic member 4 may be disposed inside the positioning column 3 to provide elasticity, thereby saving installation space. The elastic member 4 described herein may be spring-loaded and be selected according to the particular pressure requirements.

The sealing gasket 2 is made of a soft rubber material, is fixedly sleeved at the upper end of the positioning column 3, and can be used for sealing an outlet 112 of the micro-leakage hole 11. The connection surface of the sealing gasket 2 to the outlet 112 of the micro-leakage hole 11 may be provided as a plane. Specifically, a concave plane is arranged at the top of the gasket 2, and the concave plane is matched with the bottom surface of the cone 12 in the shell 1 to form a sealing surface, so that the sealing effect is improved.

In the second embodiment of the present invention, as shown in fig. 4 and 5, the design of how the sealing pad 2 seals the outlet 112 of the micro-leakage hole 11 may be: the upper end of the sealing gasket 2 is set to be conical 12, the vertex of the conical 12 is suitable for being jacked into the outlet 112, the conical surface 21a seals the outlet 112, the outlet 112 is sealed through the conical surface 21a, and the problem that the sealing gasket 2 cannot be opened by water pressure due to overlarge absorption stress between the two planes caused by sealing between the two planes can be solved, and further the water pressure of the water outlet device is overlarge. In another preferred embodiment, the conical surface 21a can be an elliptic paraboloid 21b, and the elliptic vertex of the conical surface is suitable for being pressed into the outlet 112, so that the elliptic paraboloid 21b seals the outlet 112. The sealing surface can be more attached to the outlet 112 of the micro leakage hole 11 through the elliptic paraboloid 21b, and the vertex does not need to excessively extend into the outlet 112, so that the displacement of downward movement of the sealing gasket 2 during pressure relief is reduced.

Referring to fig. 6 and 7, in a third embodiment of the present invention, a housing 1 is optimally designed, a truncated cone 13 is disposed on the top of the housing 1, and the micro-leakage hole 11 penetrates from the top surface of the truncated cone 13 to the inside of the housing 1. Through the extension the problem that the outside of casing 1 freezes inside earlier afterwards freezes can be solved to the length of little leak hole 11, and the principle here is because the water is when freezing, usually from outside-in freezes, consequently sets up elongated round platform body 13, can make this little leak hole 11 entry 111 of pressure relief valve prevents frostbite stretch into the ponding inside of water installation for during freezing, can not lead to entry 111 department to freeze earlier and lose the pressure release function, in order to improve the effect of preventing frostbite.

The working principle of the invention is as follows: pressure water pressure when going out in the water installation is great, especially when freezing winter, because there is ponding in the water installation inside, ponding can make the volume expansion when freezing to increase inside pressure, if this pressure lasts to exist, then can make the spare part of water installation damage, consequently sets up this pressure release relief valve through the position at easy ponding. When ponding freezes, the process water pressure grow gradually because water becomes ice is in the entry 111 department of the little leakage hole 11 of pressure relief valve prevents frostbite, when water pressure is greater than the ascending elasticity of elastic component 4, then reference column 3 is pushed down, make sealed pad 2 relieve the closure to the export 112 of little leakage hole 11, then partial ponding or little ice-cube can be discharged along little leakage hole 11, thereby reduce the pressure in the water discharging device, and the partial ponding of discharge, make the water in the water discharging device not enough exceed original volume size after becoming ice. After the pressure relief is finished, the positioning column 3 moves upwards under the action of the elastic part 4, so that the sealing gasket 2 closes the outlet 112 of the micro-leakage hole 11 again. Through this scheme, can effectively make the discharge of the interior ponding of water outlet device when freezing winter, prevent to burst spare part. In the invention, the safety valve can be set to start pressure relief when the pressure is not relieved at 0-2Mp and is more than 2Mp, and the pressure is more than 4Mp so that redundant ice water can flow out of the micro-leakage hole 11 regardless of the ice water. Of course, the micro-leak hole 11 can also discharge gas.

It should be understood that: the above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention.

The above description of the drawings used in the embodiments shows only some examples of the invention and should not be taken as limiting the scope, from which other relevant drawings can be derived by a person skilled in the art without inventive step.

Claims (10)

1. An anti-freezing pressure relief safety valve comprises a shell, a positioning column, an elastic piece and a rear cover, and is characterized by also comprising a sealing gasket, wherein,

the shell is sleeved on the rear cover, and a micro-leakage hole for pressure relief is formed in the shell; the micro leakage hole is in a horn shape which becomes larger gradually from the inlet to the outlet;

the positioning column is elastically fixed on the rear cover through the elastic piece and can move up and down in the rear cover;

the sealing gasket is arranged at the top of the positioning column and is suitable for closing or opening the micro leakage hole under the action of the positioning column.

2. The antifreeze pressure relief valve of claim 1, wherein said housing is tapered at the outlet of said micro-leak hole.

3. The antifreeze pressure relief safety valve of claim 2, wherein the connecting surface of the sealing gasket and the outlet of the micro-leakage hole is a plane.

4. The antifreeze pressure relief safety valve of claim 2, wherein the end of the gasket connected to the outlet of the micro-leak hole is provided with a conical shape, and the vertex of the conical shape is adapted to be pushed into the outlet, so that the conical surface seals the outlet.

5. The antifreeze pressure relief safety valve of claim 2, wherein the end of the gasket connected to the outlet of the micro-leak hole is configured as an elliptic paraboloid, and the vertex of the ellipse is adapted to be pushed into the outlet, so that the elliptic paraboloid seals the outlet.

6. The antifreeze pressure relief safety valve of claim 2, wherein the top of the housing is provided with a truncated cone, and the micro-leakage hole penetrates from the top surface of the truncated cone to the inside of the housing.

7. The anti-freezing pressure relief safety valve of claim 2, wherein the aperture of the micro-leak is 0.5mm to 1mm.

8. The antifreeze pressure relief safety valve of claim 2, wherein the gasket is a soft rubber material.

9. The antifreeze pressure relief valve of claim 1, wherein a seal ring is provided on the outside of said housing.

10. A water outlet device, characterized in that the anti-freezing pressure relief safety valve of any one of claims 1-9 is included.

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