CN113531176A

CN113531176A - One-way stop valve

Info

Publication number: CN113531176A
Application number: CN202010290385.5A
Authority: CN
Inventors: 白双林; 叶立明; 周建平; 祝传宝
Original assignee: Xiamen Lota International Co Ltd
Current assignee: Xiamen Lota International Co Ltd
Priority date: 2020-04-14
Filing date: 2020-04-14
Publication date: 2021-10-22

Abstract

The invention provides a one-way stop valve, comprising: a housing; the operating piece is operable to be arranged in the shell in a sliding mode, and further comprises a first mounting cavity, and a first blocking piece is arranged at the inlet of the first mounting cavity; and the valve core comprises a valve shaft, one end of the valve shaft radially extends outwards to form a second stopping part, the second stopping part can penetrate through the first stopping part and extend into the first mounting cavity, and when the valve shaft slides in the first mounting cavity, the first stopping part and the second stopping part limit the valve shaft to slide out of the first mounting cavity. By adopting the technical scheme, the one-way stop valve which is easy to install and not easy to scatter and lose can be provided.

Description

One-way stop valve

Technical Field

The invention relates to the field of sanitary and bathroom pipelines, in particular to a one-way stop valve.

Background

One-way stop valves for regulating the flow rate, the flow rate opening and closing, and the function of a one-way valve for cold or hot water at cold or hot water intake ends in lavatories or bathrooms are known, and usually one controls the one-way stop valve by regulating the one-way stop valve between two extreme positions, namely, a closed position in which the cold or hot water in the pipe is completely closed and cannot flow out, and a maximum flow rate position in which the flow rate of the cold or hot water in the pipe is maximized, and the one-way stop valve prevents the reverse flow of the cold or hot water during the flow of the cold or hot water.

The existing one-way stop valve has the following problems: firstly, when the check valve is detached from a pipeline, a plurality of parts of the check valve are easy to be scattered and lost, and the problem of neglected assembly of the parts often occurs in the production process of the check valve; secondly, the one-way valve of the one-way stop valve has poor effect, and the valve core of the one-way stop valve is easy to incline, jam or block under the impact of water flow; and thirdly, the valve core of the one-way stop valve is matched with the shell of the one-way stop valve, so that impurities can easily enter the one-way stop valve to cause jamming.

Disclosure of Invention

The invention aims to overcome at least one defect in the prior art and provide a one-way stop valve which is easy to install and is not easy to scatter and lose.

In order to solve the above technical problem, the present invention provides a check stop valve, including:

a housing;

the operating piece is operable to be arranged in the shell in a sliding mode, and further comprises a first mounting cavity, and a first blocking piece is arranged at the inlet of the first mounting cavity;

and the valve core comprises a valve shaft, one end of the valve shaft radially extends outwards to form a second stopping part, the second stopping part can penetrate through the first stopping part and extend into the first mounting cavity, and when the valve shaft slides in the first mounting cavity, the first stopping part and the second stopping part limit the valve shaft to slide out of the first mounting cavity.

Preferably, the second blocking member is compressible and movable radially inwardly therealong.

Preferably, the first blocking piece is a blocking ring which is arranged at an inlet of the first installation cavity and is radially retracted, a first guide chamfer is arranged on the inner edge of one side, away from the first installation cavity, of the blocking ring, and the second blocking piece abuts against the first guide chamfer and is pressed to move inwards along the radial direction of the first guide chamfer to penetrate through the blocking ring.

Preferably, the second stopper is a resilient stopper ring circumferentially provided on the valve shaft.

Preferably, a relief groove is formed in the valve shaft in an axially extending manner, the second blocking member abuts against the first guide chamfer and causes the valve shaft to radially contract, and the second blocking member moves radially inward to pass through the first blocking member.

Preferably, the second blocking piece is provided with a second guide chamfer which is matched with the first guide chamfer to slide.

Preferably, the first blocking piece is a blocking ring which is arranged at an inlet of the first installation cavity and is radially retracted, an internal thread structure is arranged on one inward side of the blocking ring, an external thread structure is arranged along the circumferential direction of the second blocking piece, and the second blocking piece can rotate to be in threaded connection with the first blocking piece.

Preferably, the housing includes a second mounting cavity extending therethrough, the operating member is inserted from one end of the second mounting cavity and is slidable and fixed in an axial direction of the second mounting cavity, and an inlet of the first mounting cavity faces the other end of the second mounting cavity.

Preferably, the valve core further comprises a sealing assembly arranged at the other end of the valve shaft, the sealing assembly comprises a guide part and a sealing part, the guide part and the sealing part are sequentially arranged along the direction far away from the second blocking part, and the guide part is in sliding abutting joint with the inner wall of the second mounting cavity.

Preferably, the valve core further comprises an elastic resetting piece, the elastic resetting piece is arranged in the first mounting cavity, and the elastic resetting piece abuts against between the bottom wall of the first mounting cavity and the valve shaft.

Compared with the prior art, the technical scheme of the invention has the following beneficial effects:

1. when the valve shaft is installed, the second blocking piece of the valve shaft penetrates through the first blocking piece to extend into the first installation cavity, in the subsequent working process, when the second blocking piece slides in the first installation cavity along with the valve shaft, the first blocking piece and the second blocking piece can be matched to prevent the valve shaft from sliding out of the first installation cavity, and in the installation and disassembly processes, the valve shaft cannot be separated from the first installation cavity.

2. When the valve shaft slides, one end of the valve shaft is in sliding butt joint with the first blocking piece, and the guide piece at the other end of the valve shaft is in sliding butt joint with the inner wall of the second mounting cavity, so that the valve shaft can be axially positioned in the sliding process, and the function of the one-way valve is not easily influenced under the water flow impact;

3. the guide slides against the inner wall of the second mounting cavity and can also prevent impurities from entering the second mounting cavity.

Drawings

FIG. 1 is a perspective view of a one-way shut-off valve according to a first embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a one-way shut-off valve according to a first embodiment of the present invention;

FIG. 3 is an exploded view of the check valve of the first embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view of a one-way shut-off valve in a second embodiment of the present invention;

FIG. 5 is a perspective view of a valve shaft according to a second embodiment of the present invention;

FIG. 6 is a schematic cross-sectional view of a one-way shut-off valve in a third embodiment of the present invention;

FIG. 7 is a perspective view of a valve shaft according to a third embodiment of the present invention;

FIG. 8 is a schematic view of the one-way shut-off valve of the present invention in a closed position;

FIG. 9 is a schematic view of the one-way shut-off valve of the present invention in a maximum flow path position;

fig. 10 is a schematic view showing the sealing member biased by the elastic restoring member to close the outlet of the water inlet passage when the check valve of the present invention is in the maximum flow passage position.

Detailed Description

The invention is further described with reference to the following figures and detailed description.

Certain directional terms used hereinafter to describe the drawings, such as "inner", "outer", "above", "below", and other directional terms, will be understood to have their normal meaning and refer to those directions as they normally relate to when viewing the drawings. Unless otherwise indicated, the directional terms described herein are generally in accordance with conventional directions as understood by those skilled in the art.

The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another.

Referring to fig. 1 to 10, a check stop valve 100 is adapted to be mounted on a pipeline 200, the check stop valve 100 includes a housing 1, an operating member 2, and a valve core, the operating member 2 is slidably disposed in the housing 1, the operating member further includes a first mounting cavity 21, and an inlet of the first mounting cavity 21 is provided with a first blocking member. The valve core includes a valve shaft 31, one end of the valve shaft 31 extends radially outward to form a second stopper, the second stopper is configured to pass through the first stopper and extend into the first mounting cavity 21, and when the valve shaft 31 slides in the first mounting cavity 21, the first stopper and the second stopper limit the valve shaft 31 from sliding out of the first mounting cavity 21.

The second stopper can only pass through the first stopper when entering the first mounting cavity 21, and when the valve shaft 31 slides in the first mounting cavity 21, the second stopper is restricted from sliding out of the first mounting cavity 21, and the housing 1, the operating member 2 and the valve core are kept together during mounting and dismounting in this way, which can prevent the one-way stop valve 100 from falling out when being dismounted.

Casing 1 is the tubular structure that runs through, and is concrete, casing 1 is including the second mounting chamber 11 that runs through, the one end of second mounting chamber 11 sets up female thread structure along circumference, operating parts 2 is provided with the external screw thread structure along circumference, operating parts 2 follow the one end that is provided with female thread structure of second mounting chamber 11 is packed into, and can follow the axial slip of second mounting chamber 11, owing to be spiro union transmission connection, so operating parts 2 can adjust at will with the relative position of second mounting chamber 11, the entry orientation of first mounting chamber 21 the other end of second mounting chamber 11.

The outer peripheral wall of casing 1 still includes radial overhanging butt ring body 12, casing 1 is in butt ring body 12 body orientation is kept away from still be provided with the external screw thread structure on the outer peripheral wall of one side of operating parts 2, this external screw thread structure of casing 1 accessible and pipeline 200 rigid coupling, butt ring body 12 butt pipeline 200.

The valve core further comprises a sealing assembly 33 arranged at the other end of the valve shaft 31, namely, the end of the valve shaft 31 far away from the second blocking member, the sealing assembly 33 comprises a guide member 331 and a sealing member 332, the guide member 331 and the sealing member 332 are sequentially arranged along the direction far away from the second blocking member, and the guide member 331 is in sliding contact with the inner wall of the second mounting cavity 11 in the operation process of the one-way stop valve 100. In the sliding process of the valve shaft 31, one end of the valve shaft is in sliding abutting joint with the first blocking piece, the guide piece 331 at the other end is in sliding abutting joint with the inner wall of the second mounting cavity 11, so that the valve shaft 31 can keep axial positioning in the sliding process, the function of the one-way valve is not easily influenced under water flow impact, and in addition, the guide piece 331 is in sliding abutting joint with the inner wall of the second mounting cavity 11, so that impurities can be prevented from entering the second mounting cavity 11. The sealing member 332 is made of a flexible material, such as silicone, and is used for sealing the water outlet of the pipeline 200.

The valve core further comprises an elastic resetting piece 34, the elastic resetting piece 34 is arranged in the first installation cavity 21, the elastic resetting piece 34 abuts between the bottom wall of the first installation cavity 21 and the valve shaft 31, the elastic resetting piece 34 is a spring, and other elements can be replaced in some simple replacement processes, which is not described again. The operation of the check valve 100 will be described in detail later.

Referring to fig. 8-10, the one-way stop valve 100 is disposed on a pipe 200, the pipe 200 includes a water inlet passage 210 and a water outlet passage 220, the pipe 200 further includes a valve cavity communicating the water inlet passage 210 and the water outlet passage 220, the water inlet passage 210 and the water outlet passage 220 communicate with the valve cavity, an outlet 2101 of the water inlet passage 210 is located on the bottom wall of the valve cavity and coincides with the axis of the valve cavity, and an inlet 2201 of the water outlet passage 220 is located on the side wall of the valve cavity.

The housing 1 is screwed to the valve chamber through an external thread structure, the sealing member 332 can abut against the inlet of the water inlet passage 210 as the valve shaft 31 slides, and the operating member 2 can slide on the second mounting chamber 11 and limit the sliding stroke of the valve shaft 31.

The one-way shut-off valve 100 is shifted between a closed position and a maximum flow path position, and referring to fig. 8, the one-way shut-off valve 100 is in a closed position in which the operating member 2 is operated to abut against the guide member 331 while the sealing member 332 is fully pressed against the outlet 2101 of the water inlet passage 210, and water cannot enter the water outlet passage 220 from the water inlet passage 210.

Referring to fig. 9-10, the one-way shut-off valve 100 is in a maximum flow position in which the valve shaft 31 is slidable into abutment with the outlet 2101 of the inlet passage 210. When water flows out from the outlet 2101 of the water inlet passage 210, the valve shaft 31 is pushed to slide due to the influence of water pressure, at this time, the elastic resetting member 34 is pressed to accumulate elastic force, and after the water in the water inlet passage 210 stops, the elastic force of the elastic resetting member 34 is released, so that the sealing member 332 is pressed against the outlet 2101 of the water inlet passage 210 again, at this time, because the inlet 2201 of the water outlet passage 220 is arranged on the side wall of the valve cavity, the water in the water outlet passage 220 cannot push the valve shaft 31, and at this time, the valve shaft functions as a one-way valve.

When different flow rates need to be adjusted, the operating member 2 is rotated, the operating member 2 is moved towards the outlet 2101 of the water inlet passage 210 through the transmission effect of the threads, the sliding stroke of the valve shaft 31 is limited by the operating member 2, and because the inlet 2201 of the water outlet passage 220 is arranged on the side wall of the valve cavity, the periphery of the guide 331 and the sealing member 332 partially shields the inlet 2201 of the water outlet passage 220, so as to control the flow rate.

Specific structures of the first blocking member and the second blocking member are described in detail below.

First embodiment

Referring to fig. 1 to 3, in this embodiment, the second blocking element is compressible and can move radially inward, specifically, the first blocking element is a blocking ring 221 disposed at the inlet of the first installation cavity 21 and radially inwardly retracted, the inner edge of the blocking ring 221 on the side away from the first installation cavity 21 is provided with a first guiding chamfer 222, and the second blocking element abuts against the first guiding chamfer 222 and is compressed to move radially inward and then passes through the blocking ring 221.

The second stopper is an elastic stopper 321 circumferentially disposed on the valve shaft 31, and the elastic stopper 321 is made of a flexible material, such as silicone. During the installation process, the valve shaft 31 carries the second stopper, i.e. the elastic check ring 321, to abut against the first guiding chamfer 222, under the action of the applied external force and the first guiding chamfer 222, the elastic check ring 321 passes through the check ring 221 after being deformed radially inward, and after passing through the check ring 221, the elastic check ring 321 returns to its original shape. At this time, in the process that the valve shaft 31 slides in the first installation cavity 21, because the inner edge of the blocking ring 221 on the side close to the first installation cavity 21 is not provided with a chamfer, the elastic blocking ring 321 cannot pass through the blocking ring 221 again, that is, the cooperation of the first blocking element and the second blocking element makes the valve shaft 31 unable to slide out of the first installation cavity 21.

Second embodiment

Referring to fig. 4-5, the second embodiment is the same as the first embodiment, and is provided with a stop ring 221, the inner edge of the stop ring 221 on the side far from the first installation cavity 21 is provided with a first guiding chamfer 222, and the second stop abuts against the first guiding chamfer 222 and is pressed to move radially inwards to pass through the stop ring 221.

The second embodiment differs from the first embodiment in that the second stop and the valve shaft 31 are integrally formed annular protrusions 323, the valve shaft 31 has an axially extending relief groove 311 therein, the second stop abuts against the first guide chamfer 222 and causes the valve shaft 31 to be radially retracted, and the second stop moves radially inwardly therewith through the first stop.

The relief groove 311 extends from one end of the valve shaft 31 adjacent to the second stopper toward the other end, the relief groove 311 divides the valve shaft 31 into a first half shaft 312 and a second half shaft 313, and when the second stopper is pressed against the first guide chamfer 222, the first half shaft 312 and the second half shaft 313 approach each other and the radial dimension of the second stopper is made smaller, and the second stopper passes through the first stopper.

In this embodiment, the second blocking member is provided with a second guiding chamfer 322 adapted to slide along the first guiding chamfer 222, and the second guiding chamfer 322 can make the second blocking member pass through the first blocking member more quickly and more easily.

At this time, in the process that the valve shaft 31 slides in the first mounting cavity 21, because the inner edge of the blocking ring 221 on the side close to the first mounting cavity 21 is not provided with a chamfer, the second blocking member cannot pass through the blocking ring 221 again, that is, the cooperation of the first blocking member and the second blocking member prevents the valve shaft 31 from sliding out of the first mounting cavity 21.

Third embodiment

Referring to fig. 6 to 7, in the present embodiment, the first blocking member is also a blocking ring 221 disposed at the inlet of the first mounting cavity 21 and radially retracted, but unlike the first and second embodiments, an inner thread structure is disposed at an inward side of the blocking ring 221, the second blocking member is also an annular protrusion 323 integrally formed with the valve shaft 31, the annular protrusion 323 is circumferentially provided with an outer thread structure, and the second blocking member is rotatably screwed through the first blocking member.

During the installation process, the valve shaft 31 only needs to be screwed through the first stopper in a rotating manner, and because the valve shaft 31 does not rotate when the subsequent one-way stop valve 100 is detached from the pipeline 200 or during the working process, the valve shaft 31 cannot slide out of the first installation cavity 21 directly due to the cooperation of the first stopper and the second stopper.

The above description is only a preferred embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any person skilled in the art can make insubstantial changes in the technical scope of the present invention within the technical scope of the present invention, and the actions infringe the protection scope of the present invention are included in the present invention.

Claims

1. A one-way shut-off valve, comprising:

a housing;

2. The one-way shut-off valve of claim 1, wherein: the second blocking member may be compressed and moved radially inward therealong.

3. The one-way shut-off valve of claim 2, wherein: the first blocking part is a blocking ring which is arranged at the inlet of the first installation cavity and radially retracts, a first guide chamfer is arranged on the inner edge of one side, away from the first installation cavity, of the blocking ring, and the second blocking part abuts against the first guide chamfer and is pressed to move radially inwards to penetrate through the blocking ring.

4. The one-way shut-off valve of claim 3, wherein: the second stopper is a resilient stopper ring circumferentially provided on the valve shaft.

5. The one-way shut-off valve of claim 3, wherein: and a relief groove is formed in the valve shaft in an axially extending manner, the second blocking piece abuts against the first guide chamfer and enables the valve shaft to radially contract, and the second blocking piece moves radially inwards to penetrate through the first blocking piece.

6. The one-way shut-off valve of claim 5, wherein: the second blocking piece is provided with a second guide chamfer which is matched with the first guide chamfer to slide.

7. The one-way shut-off valve of claim 1, wherein: the first blocking piece is a blocking ring which is arranged at an inlet of the first installation cavity and radially retracts inwards, an internal thread structure is arranged on one inward side of the blocking ring, an external thread structure is arranged along the circumferential direction of the second blocking piece, and the second blocking piece can rotate to be screwed and penetrates through the first blocking piece.

8. The one-way shut-off valve of any one of claims 1-7, wherein: the shell comprises a second mounting cavity which penetrates through the shell, the operating piece is installed from one end of the second mounting cavity, can slide along the axial direction of the second mounting cavity and is fixed, and the inlet of the first mounting cavity faces the other end of the second mounting cavity.

9. The one-way shut-off valve of claim 8, wherein: the valve core further comprises a sealing assembly arranged at the other end of the valve shaft, the sealing assembly comprises a guide piece and a sealing piece, the guide piece and the sealing piece are sequentially arranged along the direction far away from the second blocking piece, and the guide piece is in sliding butt joint with the inner wall of the second mounting cavity.

10. The one-way shut-off valve of claim 9, wherein: the valve core further comprises an elastic resetting piece, the elastic resetting piece is arranged in the first mounting cavity, and the elastic resetting piece abuts against the bottom wall of the first mounting cavity and the valve shaft.