CN219198242U

CN219198242U - Antifreezing pressure relief safety valve and water outlet device

Info

Publication number: CN219198242U
Application number: CN202223132541.9U
Authority: CN
Inventors: 王天明; 马清水; 陈智强; 纪岩龙; 祝传宝
Original assignee: Xiamen Lota International Co Ltd
Current assignee: Xiamen Lota International Co Ltd
Priority date: 2022-11-24
Filing date: 2022-11-24
Publication date: 2023-06-16
Anticipated expiration: 2032-11-24

Abstract

The utility model provides an antifreezing 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 holes are arranged in a horn shape which gradually becomes larger 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 utility model also provides a water outlet device which comprises the antifreezing pressure relief safety valve. The safety valve has smaller volume and better antifreezing effect.

Description

Antifreezing pressure relief safety valve and water outlet device

Technical Field

The utility model relates to the technical field of valve bodies, in particular to an antifreezing pressure relief safety valve and a water outlet device.

Background

The existing common pressure relief valve is large in size and large in leakage hole, and the common pressure relief valve is easy to relieve pressure when water is in a liquid state. However, in the environment with the temperature below zero in winter, accumulated water is arranged at the front end of the pressure release valve in use, when the accumulated water is changed into ice at the temperature of 0 ℃, the density of the ice is 0.9 g/cc, and the density of the water is 1 g/cc, so that the water becomes solid and the volume is increased by about 10%, the valve core and the tap are squeezed to crack, and the tap leaks. Therefore, when the temperature is zero in winter, water becomes ice to expand in volume, the water outlet device without the safety relief valve can lose the function of releasing ice or water due to the fact that excessive ice cannot be discharged when the pressure is increased, and the pressure relief Kong Kongda of the existing safety relief valve is easy to drain, but on one hand, larger elasticity is required for pressure maintaining, so that the volume of the whole relief valve is increased.

Disclosure of Invention

The utility model discloses an antifreezing pressure relief safety valve, which is simple in structure and convenient to operate, and aims to solve the problems that the volume of the existing common pressure relief valve is large and the antifreezing effect cannot be achieved.

The utility model adopts the following scheme:

the application provides an antifreezing 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 holes are arranged in a horn shape which gradually becomes larger 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 the outlet of the micro-leakage hole.

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

Further, one end of the sealing gasket 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.

Further, one end of the micro leakage hole, which is connected with the outlet, is provided with an elliptic paraboloid, and the elliptic vertex of the elliptic paraboloid is suitable for sealing the outlet by the sealing gasket and pushing the elliptic paraboloid into the outlet.

Further, the top of the shell is provided with a truncated cone, and the micro-leakage holes penetrate from the top surface of the truncated cone to the inside of the shell.

Further, the aperture of the micro-leakage hole is 0.5 mm-1 mm.

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

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

The utility model also provides a water outlet device, which comprises the antifreezing pressure relief safety valve.

The beneficial effects are that:

according to the utility model, the valve body for controlling pressure relief by the elastic piece is arranged, so that no matter water or ice exists in the water outlet device, the excessive water or ice can be drained when the pressure is increased, and the product cannot be burst due to overlarge pressure. Specifically, the shell is provided with the trumpet-shaped micro-leakage holes which gradually become larger from the inlet to the outlet, so that the size of the leakage holes is reduced, the volume of the whole anti-freezing pressure relief safety valve can be reduced, and small ice cubes can be easily extruded from the smaller micro-leakage holes; further, through the structural cooperation of the sealing gasket and the outlet of the micro leakage hole, the sealing effect is improved, and the pressure release capacity can be improved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an antifreezing pressure relief safety valve according to an embodiment of the utility model;

FIG. 2 is a schematic cross-sectional view of an embodiment of an antifreeze pressure relief valve according to the present utility model;

FIG. 3 is an exploded view of an embodiment of the freeze protection and pressure relief safety valve of the present utility model;

FIG. 4 is a schematic diagram of another embodiment of an anti-freeze pressure relief valve according to the present utility model;

FIG. 5 is a schematic diagram of another embodiment of an antifreeze pressure relief valve according to the present utility model;

FIG. 6 is a schematic cross-sectional view of an antifreezing relief valve with a truncated cone according to an embodiment of the utility model;

fig. 7 is a schematic view of an appearance structure of an antifreezing pressure relief safety valve with a truncated cone according to an embodiment of the present utility model;

icon: the micro-leakage hole type 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 antifreezing pressure relief safety valve.

The anti-freezing and pressure-relieving 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 formed in a horn shape gradually increasing 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 gasket 2 is arranged on top of the positioning column 3 and is adapted to close or open the micro leakage hole 11 under the action of the positioning column 3.

In the embodiment, the anti-freezing pressure relief safety valve is small in size, and various parts of different taps, including valve cores, water nozzles, pipelines and the like of the taps are properly placed. When the pressure is too high, the micro leakage hole 11 can easily release pressure. Next, a specific structure of the freeze-proof pressure relief valve will be described.

With continued reference to fig. 2 to 3, in a first embodiment of the present utility model, the housing 1 is provided in a hollow cylindrical shape, and is adapted to be fitted over and fixed to the rear cover 5, and a seal is provided at a position where the inside of the housing is connected to the rear cover 5, so as to prevent water leakage; the micro-leakage hole 11 is arranged above the shell 1, the micro-leakage hole 11 penetrates through the top of the shell 1, the top surface of the shell 1 is taken as an inlet 111, and the micro-leakage hole 11 extends from the inlet 111 to the inside of the shell 1 to an outlet 112 to form a horn shape with continuously enlarged diameter. The trumpet-like design allows small ice cubes to enter from the inlet 111 and to fall from the outlet 112 more easily due to the larger diameter below, preventing the ice cubes from plugging inside the micro-leakage hole 11 due to the presence of internal stress or other resistance. Specifically, the diameter of the micro leakage hole 11 is set to be between 0.5mm and 1mm, and by the design of the size, on one hand, under the condition of smaller aperture, larger water pressure can be sealed with smaller force, so that the problem of the size of the whole shell 1 becoming larger due to overlarge aperture is prevented; here, since the aperture is small, the force transmitted to the lower side of the aperture outlet 112 is small, so that the micro leakage hole 11 can be sealed with a small force, thereby reducing the elastic force requirement of the elastic member 4. The inside of the shell 1 is provided with the cone 12 at the outlet 112, and when the bottom surface of the cone 12 is connected and sealed with the sealing gasket 2 through the plane, the stress between the two planes can be reduced, and the situation that the pressure cannot be relieved due to overlarge mutual suction between the two planes is prevented; on the other hand, through the setting of conical surface, can make the cavity around the conical surface, be convenient for ice-cube or water have sufficient space to discharge when the pressure release. Further, an annular groove for installing the sealing ring 6 is formed in the outer surface of the shell 1, and the sealing ring 6 is arranged in the annular groove.

The rear cover 5 is formed in a rotator shape, a drainage cavity for drainage is formed in the rear cover, and a drainage outlet and a positioning block 51 for mounting the positioning column 3 are formed at the bottom.

The positioning column 3 is disposed on the positioning block 51 of the rear cover 5, and specifically, an axis thereof may be disposed coincident with a central axis of the micro leakage hole 11. The positioning column 3 may be configured in a shape of a "dry" and is arranged above the positioning column for sleeving the sealing gasket 2. The elastic member 4 is disposed at the outer side of the positioning column 3, and is configured to provide a pre-tightening 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 member 4, the elastic member 4 pushes the positioning column 3 upwards, so that the sealing gasket 2 blocks the outlet 112; conversely, 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 for pressure relief, and ice cubes or water can fall. Of course, in another embodiment, the bottom of the positioning post 3 may be hollow, and the elastic member 4 may be disposed inside the positioning post 3 to provide elastic force, thereby saving installation space. The elastic member 4 described herein may be spring-loaded, and may be selected according to specific pressure requirements.

The sealing gasket 2 is made of a soft rubber material, is sleeved and fixed at the upper end of the positioning column 3, and can be used for sealing the outlet 112 of the micro leakage hole 11. The connection surface of the gasket 2 and the outlet 112 of the micro leakage hole 11 may be provided as a flat surface. 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 in the shell 1 to form a sealing surface, so that the sealing effect is improved.

In a second embodiment of the present utility model, as shown in fig. 4 and 5, the design of how the gasket 2 seals the outlet 112 of the micro leakage hole 11 may be: the upper end of the sealing gasket 2 is provided with a conical shape 12, and the vertex of the conical shape 12 is suitable for being jacked into the outlet 112, so that the conical surface 21a seals the outlet 112, and the conical surface 21a seals the outlet 112, thereby reducing the problem that the sealing between two planes causes that the sealing gasket 2 cannot be opened due to water pressure caused by overlarge suction stress between the two planes, and further causing overlarge water pressure of the water outlet device. In another preferred embodiment, the conical surface 21a may also be provided as an elliptic paraboloid 21b, and the elliptic vertex thereof is adapted to be pushed into the outlet 112, so that the elliptic paraboloid 21b seals the outlet 112. The elliptic paraboloid 21b can enable the sealing surface to be more attached to the outlet 112 of the micro leakage hole 11, and the vertex does not need to excessively extend into the outlet 112, so that the displacement amount of the downward movement of the sealing gasket 2 during pressure relief is reduced.

In a third embodiment of the present utility model, as shown in fig. 6 and 7, the housing 1 is optimally designed, a circular truncated cone 13 is disposed at the top of the housing 1, and the micro-leakage holes 11 penetrate from the top surface of the circular truncated cone 13 to the inside of the housing 1. The problem that the outside of the shell 1 is frozen firstly and then frozen can be solved by prolonging the length of the micro-leakage hole 11, and the principle is that the water is frozen normally from outside to inside when the water is frozen, so that the lengthened round table body 13 is arranged, the inlet 111 of the micro-leakage hole 11 of the anti-freezing pressure relief safety valve stretches into the water accumulation of the water outlet device, and the pressure relief function is lost due to the fact that the inlet 111 is frozen firstly when the water is frozen, so that the anti-freezing effect is improved.

The working principle of the utility model is as follows: when the pressure water pressure in the water outlet device is high, particularly when the water outlet device is frozen in winter, the water is accumulated in the water outlet device, the volume of the water is expanded when the water is frozen, so that the internal pressure is increased, and if the pressure is continuously present, parts of the water outlet device are damaged, so that the pressure relief safety valve is arranged at a position easy to accumulate water. When the accumulated water freezes, the water pressure at the inlet 111 of the micro leakage hole 11 of the anti-freezing pressure relief safety valve gradually increases due to the process that the water becomes ice, when the water pressure is larger than the upward elastic force of the elastic piece 4, the positioning column 3 is pressed down, the sealing gasket 2 releases the sealing of the outlet 112 of the micro leakage hole 11, and part of accumulated water or small ice cubes can be discharged along the micro leakage hole 11, so that the pressure in the water outlet device is reduced, part of accumulated water is discharged, and the water in the water outlet device is insufficient to exceed the original volume after the water in the water outlet device is frozen. After the pressure relief is finished, under the action of the elastic piece 4, the positioning column 3 moves upwards, 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 ponding in the play water installation when freezing winter, prevent to burst spare part. In the present utility model, the relief valve may be provided so that the relief valve does not release pressure at 0 to 2Mp, and the relief valve starts releasing pressure when the relief valve is larger than 2Mp, and the relief valve is larger than 4Mp so that the excess ice water can flow out of the micro leakage hole 11 regardless of the ice water. Of course, the micro leakage holes 11 can also exhaust gas.

It should be understood that: the above is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model.

The description of the drawings in the embodiments above illustrates only certain embodiments of the utility model and should not be taken as limiting the scope, since other related drawings may be made by those of ordinary skill in the art without the benefit of the inventive faculty.

Claims

1. An antifreezing 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 holes are arranged in a horn shape which gradually becomes larger 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 freeze protection relief safety valve according to claim 1 wherein the housing is tapered at the outlet of the micro-leak.

3. The freeze protection relief safety valve according to claim 2 wherein the interface of the gasket and the outlet of the micro-leak is planar.

4. The freeze protection and pressure relief safety valve according to claim 2 wherein the end of the gasket connected to the outlet of the micro-leak is conically shaped with a conical apex adapted to push into the outlet such that the conical surface seals the outlet.

5. The freeze protection relief safety valve according to claim 2 wherein the end of the gasket connected to the outlet of the micro-leak is configured as an elliptic paraboloid with its elliptic apex adapted to push into the outlet such that the elliptic paraboloid seals the outlet.

6. The freeze protection and pressure relief safety valve according to claim 2 wherein the top of the housing is provided with a boss and the micro-leakage orifice extends from the top surface of the boss to the interior of the housing.

7. The antifreeze pressure relief safety valve according to claim 2, wherein the aperture of said micro-leakage orifice is 0.5mm to 1mm.

8. The freeze protection relief safety valve according to claim 2 wherein the gasket is a soft rubber material.

9. The freeze protection pressure relief safety valve according to claim 1 wherein a seal ring is provided on the outside of the housing.

10. A water outlet device, characterized by comprising an antifreezing pressure relief safety valve according to any one of claims 1-9.