CN212564563U

CN212564563U - Check valve with pressure release protection function

Info

Publication number: CN212564563U
Application number: CN202020714511.0U
Authority: CN
Inventors: 黄志雄; 谭艾明; 钟佳盛
Original assignee: Mingda Industry Xiamen Co ltd
Current assignee: Mingda Industry Xiamen Co ltd; Intex Industries Xiamen Co Ltd
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2021-02-19
Anticipated expiration: 2030-04-30

Abstract

The utility model discloses a check valve with pressure release protect function, including interior valve barrel and check valve core, the inside input hole that is equipped with of interior valve barrel, an elastic component promotes check valve core axial displacement closes the input hole still includes outer valve barrel and pressure release case, outer valve barrel entangles interior valve barrel and the two links together, be equipped with the pressure release hole on the outer valve barrel, another elastic component promotes pressure release case axial displacement closes the pressure release hole. Therefore, the one-way valve can realize one-way feeding, more importantly, the one-way valve has the function of pressure relief protection in the feeding process, and has the advantage of good safety. In addition, during installation, only one installation hole needs to be reserved in the closed container, the installation is simple and convenient, and the sealing stability of the closed container is effectively guaranteed.

Description

Check valve with pressure release protection function

Technical Field

The utility model relates to a check valve especially relates to a check valve with pressure release protect function.

Background

The one-way valve, as the name implies, is a switch that allows one-way flow of gas and liquid. The check valve is arranged on the closed container, and air or water is fed into the closed container through the check valve, so that air leakage or water leakage of the closed container in the using process can be avoided.

In order to improve the safety performance of the closed container and prevent the closed container from being damaged due to excessive internal pressure, a pressure relief valve is usually additionally arranged on the closed container to ensure that the pressure in the closed container does not exceed a safety value. However, such a structure requires the check valve and the relief valve to be installed on the closed container, and the closed container requires installation holes to be reserved for different control valves, so that the number of installation times is large, and the sealing stability is also affected.

Later, some people also add on the check valve and set up the pressure release passageway, and the check valve controls the pressure release operation together, and the shortcoming of this kind of structure lies in, the check valve pressure release passageway is in closed state under the open mode all the time, and only after the check valve closed, the pressure release passageway could be opened under inside high pressure thrust automatically. Therefore, when the pressure relief valve is used, for example, in the process of air intake or water intake, if the pressure in the closed container exceeds the safety value, the pressure relief channel is still in a closed state at the moment, and the pressure cannot be relieved in time, so that the closed container is easily damaged, and even safety accidents occur. Therefore, this type of structure is not practical in actual operation.

SUMMERY OF THE UTILITY MODEL

The utility model provides a check valve with pressure release protect function, it has overcome the not enough that the background art exists. The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides a check valve with pressure release protect function, includes interior valve barrel and check valve core, the inside input hole that is equipped with of interior valve barrel, the check valve core axial activity set up in the interior valve barrel, an elastic component promotes check valve core axial displacement closes the input hole still includes outer valve barrel and pressure release case, outer valve barrel entangles interior valve barrel and the two links together, be equipped with the pressure release hole on the outer valve barrel, pressure release case axial activity set up in the outer valve barrel, another elastic component promotes pressure release case axial displacement closes the pressure release hole.

Compared with the background technology, the technical scheme has the following advantages: when air or water (liquid) enters, external air pressure or water pressure directly pushes the one-way valve core open, air inflation or water irrigation can be carried out on the closed container, the pressure in the closed container is continuously increased, the pressure relief valve core can be automatically pushed open when a set value is reached, and pressure relief is realized through the pressure relief hole. Therefore, the check valve of this scheme not only can realize one-way feeding, more importantly just plays the function of pressure release protection at the in-process of feeding, has the good advantage of security. In addition, during installation, only one installation hole needs to be reserved in the closed container, the installation is simple and convenient, and the sealing stability of the closed container is effectively guaranteed.

In a preferred embodiment: the pressure relief valve comprises an inner valve sleeve, an outer valve sleeve, a pressure relief valve core and a pressure relief valve core, wherein the lower portion of the inner valve sleeve is connected with the lower portion of the outer valve sleeve, an accommodating cavity is formed between the upper portion of the inner valve sleeve and the upper portion of the outer valve sleeve, and the pressure relief valve core is axially movably arranged in the accommodating cavity. Therefore, the structure is compact, a large mounting hole is not needed on the closed container, the inner side and the outer side of the pressure relief valve core are restrained by the inner valve sleeve and the outer valve sleeve, the moving and positioning precision of the pressure relief valve core is better, the assembly of the pressure relief valve core is simpler, and the whole check valve has the advantage of simple structure.

In a preferred embodiment: the containing cavity is annular, the pressure relief valve core is in a sleeve shape, and the other elastic part is tensioned between the inner valve sleeve and the pressure relief valve core. Therefore, the elastic piece is sleeved on the inner valve sleeve, the structure is more stable, and the stress of the pressure relief valve core is more uniform.

In a preferred embodiment: the upper end of the pressure relief valve core extends out of the accommodating cavity upwards, the upper end of the pressure relief valve core extends outwards in the lateral direction to form a separation blade, the upper end of the outer valve sleeve extends outwards in the lateral direction to form a flange part, the pressure relief hole is formed in the flange part, and the separation blade seals the pressure relief hole. The pressure release hole is plugged up from the outside to the separation blade, conveniently observes separation blade and pressure release hole at any time, and it is convenient to maintain.

In a preferred embodiment: the lower surface of the separation blade is provided with a sealing gasket; the outer end part of the flange part is wrapped with a layer of connecting sleeve in an injection molding mode, and the edge of the connecting sleeve is provided with a welding edge. The welding edge can be conveniently welded with the closed container, the installation is convenient, and the structure is firmer.

In a preferred embodiment: the lower part of the inner valve sleeve is screwed with the lower part of the outer valve sleeve through threads. The inner valve sleeve and the outer valve sleeve are detachable, and the outer valve sleeve and the pressure relief valve core are actually detached to be used as a common one-way valve, so that the inner valve sleeve and the outer valve sleeve can be conveniently improved on the basis of the existing one-way valve, and the inner valve sleeve and the outer valve sleeve have good applicability.

In a preferred embodiment: the one-way valve core blocks the input hole from the lower part, the bottom of the inner valve sleeve is provided with a fixed seat, an elastic piece is tensioned between the one-way valve core and the fixed seat, and the top surface of the one-way valve core is provided with a support rod extending upwards. The one-way valve core can be pushed away conveniently through the supporting rod, so that the water can be drained conveniently from the closed container.

In a preferred embodiment: the inner valve sleeve is provided with support arms around the input hole, and the support arms surround the support rod. Thus, the one-way valve core can be prevented from shifting to the original position when the support rod is manually operated.

In a preferred embodiment: the upper part of the inner valve sleeve is provided with a sinking groove, the input hole is positioned in the center of the bottom surface of the sinking groove, and the inner valve sleeve further comprises a valve cover which detachably covers the sinking groove. Thereby effectively preventing misoperation.

In a preferred embodiment: the outer peripheral wall of the inner valve sleeve is concave and forms an upper top wall, the inner side of the lower end of the pressure relief valve core is provided with a lower bottom wall, and two ends of the other elastic piece respectively support against the upper top wall and the lower bottom wall; the outer valve sleeve and the inner valve sleeve are detachably connected. Therefore, the one-way valve core moves in the inner valve sleeve and can close the input hole, the pressure relief valve core moves outside the inner valve sleeve and can close the pressure relief hole, the inner valve sleeve can guide the two valve cores simultaneously, and the structure of the one-way valve is simplified.

In a preferred embodiment: the valve cover is screwed with the inner valve sleeve through threads.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic exploded view of the check valve with pressure relief protection function of the present invention.

Fig. 2 is a sectional view of the check valve having a pressure relief protection function shown in fig. 1.

Fig. 3 is a schematic sectional view showing the check valve mounted on the hermetic container.

Fig. 4 is a schematic view showing the use of an external water inlet pipe in connection with a check valve.

Detailed Description

Referring to fig. 1 to 4, a check valve with a pressure relief protection function includes an inner valve housing 10 and a check valve core 20, an input hole 11 is disposed in the inner valve housing 10, the check valve core shaft 20 is axially movably disposed in the inner valve housing 10 and can axially reciprocate, an elastic member 30 pushes the check valve core 20 to axially move upward to close the input hole 11, a gas or liquid with a relatively high pressure can push the check valve core 20 inward from the outside, and the connection relationship and the working principle of the inner valve housing 10, the check valve core shaft 20, and the elastic member 30 are the prior art and will not be described in detail. The check valve with the pressure relief protection function further comprises an outer valve sleeve 40 and a pressure relief valve core 50, wherein the outer valve sleeve 40 is sleeved on the inner valve sleeve 10 and connected together. The outer valve sleeve 40 is provided with a pressure relief hole 42, the pressure relief valve core 50 is axially movably arranged in the outer valve sleeve 40 and can axially reciprocate, and the other elastic element 60 pushes the pressure relief valve core 50 to axially move to close the pressure relief hole 42. The gas or liquid with higher pressure pushes the relief valve core 50 outward from the inside.

The check valve is connected on the sealed container A, and the air inlet or the liquid inlet of the sealed container A can be realized by opening the check valve core 20, and the pressure inside the sealed container A is too high, so that the pressure relief valve core 50 can be pushed open, and the pressure is relieved by utilizing the pressure relief hole 42. Thus, for example, when water is fed, the more water in the sealed container A, the greater the air pressure, so that air can be discharged while water is fed, and the air pressure in the sealed container A during water feeding is not higher than the set value. It will be appreciated that the sealed container a may be used to contain any liquid, such as oil.

Preferably, the opening direction of the check valve spool 20 and the opening direction of the relief valve spool 50 are just opposite. In this embodiment, inward (i.e., downward) movement of the check valve spool 20 opens the inlet port 11, and outward (i.e., upward) movement of the relief valve spool 50 opens the relief port 42. Therefore, the substance (gas or liquid) enters the sealed container A from outside to inside, the gas (or liquid) in the sealed container A is discharged out of the sealed container A from inside to outside, and the circulating flow is formed while the liquid or the gas is fed, so that the feeding is facilitated.

Preferably, the lower portion of the inner valve housing 10 and the lower portion of the outer valve housing 40 are connected together, an accommodating chamber 70 is formed between the upper portion of the inner valve housing 10 and the upper portion of the outer valve housing 40, and the pressure relief valve core 50 is axially movably disposed in the accommodating chamber 70. Thus, the pressure relief valve spool 50 moves independently with respect to the inner and

outer valve sleeves

10, 40 and is not affected by the check valve spool 20. Further preferably, the receiving cavity 70 is annular, the pressure relief valve core 50 is sleeve-shaped, and the elastic member 60 is tensioned between the pressure relief valve core 50 of the inner valve housing 10. In this embodiment, an upper top wall is formed on the outer circumferential wall of the inner valve housing 10 corresponding to the concave elastic member 60, a lower bottom wall is formed on the inner side of the lower end of the pressure relief valve core, and two ends of the elastic member 60 respectively support the upper top wall and the lower bottom wall.

Preferably, the upper end of the pressure relief valve core 50 extends upward to the outside of the accommodating cavity 70, the upper end of the pressure relief valve core 50 extends laterally outward to form a blocking piece 52, the upper end of the outer valve sleeve 40 extends laterally outward to form a flange portion 44, the pressure relief hole 42 is disposed on the flange portion, and the blocking piece 52 seals the pressure relief hole 42 from the outside, so that the pressure relief valve core 50 can be manually operated. Further preferably, the lower surface of the baffle plate 52 is provided with a sealing gasket 54.

Preferably, the outer end of the flange part 44 is wrapped with a layer of connecting sleeve 46 by injection molding, and the edge of the connecting sleeve 46 is provided with a welding edge 48. During installation, only the welding edge 48 is welded with the periphery of the installation hole of the sealed container A.

Preferably, the lower portion of the inner valve housing 10 and the lower portion of the outer valve housing 40 are screwed, so that the disassembly and the maintenance are convenient. Because the inner valve sleeve 10 and the outer valve sleeve 40 are detachably connected, the pressure relief valve core 50 and the elastic member 60 can be conveniently assembled, and the upper top wall of the inner valve sleeve 10 can actually limit the lower bottom wall of the pressure relief valve core 50 to prevent the pressure relief valve core 50 from being separated, so that a clamping member is not required to be additionally arranged to prevent the pressure relief valve core 50 from being separated, and the structure is quite simple. The detachable connection mode can also be buckling connection, close fit splicing connection and the like. Of course, the inner and outer valve sleeves can be directly integrated into a whole, or can be glued or welded.

Preferably, the check valve core 20 blocks the input hole 11 from below, the bottom of the inner valve housing 10 is provided with a fixed seat 12, the elastic member 30 is tensioned between the check valve core 20 and the fixed seat 12, and the top surface of the check valve core 20 is provided with a strut 22 extending upward. The material can directly punch the one-way valve core 20 and pass through the fixed seat 12 to enter the closed container A. In use, the resilient member 30 urges the check valve spool 20 to close the input port 11.

Preferably, the inner sleeve 10 is provided with arms 13 around the inlet opening 11, and the arms 13 enclose the support rod 22.

Preferably, the inner valve housing 10 is provided at an upper portion thereof with a sink 14, the input hole 11 is positioned at a center of a bottom surface of the sink 14, and further includes a valve cover 80, and the valve cover 80 detachably covers the sink 14. As shown in fig. 4, the sink 14 can be easily inserted into the water inlet pipe B. It is further preferred that the valve cover 80 is screwed with the inner valve housing 10, so that the side wall of the sink 14 of the inner valve housing 10 is threaded and can also be screwed with the water inlet pipe B.

The above description is only a preferred embodiment of the present invention, and therefore the scope of the present invention should not be limited by this description, and all equivalent changes and modifications made within the scope and the specification of the present invention should be covered by the present invention.

Claims

1. The utility model provides a check valve with pressure release protect function, includes interior valve barrel and one-way valve core, the inside input hole that is equipped with of interior valve barrel, one-way valve core axial activity set up in the interior valve barrel, an elastic component promotes one-way valve core axial displacement closes input hole, its characterized in that: the pressure relief valve comprises an outer valve sleeve and a pressure relief valve core, wherein the outer valve sleeve sleeves the inner valve sleeve and is connected with the inner valve sleeve, the outer valve sleeve is provided with a pressure relief hole, the pressure relief valve core is axially and movably arranged in the outer valve sleeve, and the other elastic part pushes the pressure relief valve core to axially move to close the pressure relief hole.

2. The check valve with pressure relief protection function according to claim 1, characterized in that: the pressure relief valve comprises an inner valve sleeve, an outer valve sleeve, a pressure relief valve core and a pressure relief valve core, wherein the lower portion of the inner valve sleeve is connected with the lower portion of the outer valve sleeve, an accommodating cavity is formed between the upper portion of the inner valve sleeve and the upper portion of the outer valve sleeve, and the pressure relief valve core is axially movably arranged in the accommodating cavity.

3. The check valve with pressure relief protection function according to claim 2, characterized in that: the containing cavity is annular, the pressure relief valve core is in a sleeve shape, and the other elastic part is tensioned between the inner valve sleeve and the pressure relief valve core.

4. The check valve with pressure relief protection function according to claim 2 or 3, wherein: the upper end of the pressure relief valve core extends out of the accommodating cavity upwards, the upper end of the pressure relief valve core extends outwards in the lateral direction to form a separation blade, the upper end of the outer valve sleeve extends outwards in the lateral direction to form a flange part, the pressure relief hole is formed in the flange part, and the separation blade seals the pressure relief hole.

5. The check valve with pressure relief protection function according to claim 4, characterized in that: the lower surface of the separation blade is provided with a sealing gasket; the outer end part of the flange part is wrapped with a layer of connecting sleeve in an injection molding mode, and the edge of the connecting sleeve is provided with a welding edge.

6. The check valve with pressure relief protection function according to claim 2, characterized in that: the lower part of the inner valve sleeve and the lower part of the outer valve sleeve are in threaded connection, buckling connection, tight fit splicing connection, cementing connection or welding connection.

7. The check valve with pressure relief protection function according to claim 1, characterized in that: the one-way valve core blocks the input hole from the lower part, the bottom of the inner valve sleeve is provided with a fixed seat, an elastic piece is tensioned between the one-way valve core and the fixed seat, and the top surface of the one-way valve core is provided with a support rod extending upwards.

8. The check valve with pressure relief protection function according to claim 7, characterized in that: the inner valve sleeve is provided with support arms around the input hole, and the support arms surround the support rod.

9. The check valve with pressure relief protection function according to claim 7 or 8, wherein: the upper part of the inner valve sleeve is provided with a sinking groove, the input hole is positioned in the center of the bottom surface of the sinking groove, and the inner valve sleeve further comprises a valve cover which detachably covers the sinking groove.

10. The check valve with pressure relief protection function according to claim 3, characterized in that: the outer peripheral wall of the inner valve sleeve is concave and forms an upper top wall, the inner side of the lower end of the pressure relief valve core is provided with a lower bottom wall, and two ends of the other elastic piece respectively support against the upper top wall and the lower bottom wall; the outer valve sleeve and the inner valve sleeve are detachably connected.