CN113669484B

CN113669484B - Built-in one-way valve

Info

Publication number: CN113669484B
Application number: CN202110868160.8A
Authority: CN
Inventors: 刘婉; 董仁泽
Original assignee: Hunan Tengzhi Electromechanical Co ltd
Current assignee: Hunan Tengzhi Electromechanical Co ltd
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2023-05-26
Anticipated expiration: 2041-07-30
Also published as: CN113669484A

Abstract

The invention provides a built-in one-way valve, which comprises a valve seat, a rubber ring, a valve core and a valve cover, wherein the valve seat is arranged on the valve core; the valve seat is internally provided with a fluid channel, and the peripheral surface of the valve seat is provided with an annular groove and a plurality of axial straight grooves; the valve core comprises a T-shaped plug and a plurality of clamping jaws, wherein the T-shaped plug comprises a disc part and a circular ring part connected to the middle of the disc part, the circular ring part is of a net structure or is provided with a porous structure, the roots of the clamping jaws are connected to the periphery of the disc part, the inner sides of the upper parts of the clamping jaws are provided with protruding blocks, the positions of the clamping jaws correspond to a straight groove on the outer peripheral surface of a valve seat, and the protruding blocks are embedded into the straight groove and can axially move in the straight groove; the rubber ring is arranged in the annular groove of the valve seat, the valve core is attached to the lower part of the valve seat through the clamping jaw and can seal the fluid passage of the valve seat through the T-shaped plug, and the valve cover is a tubular body and is used for sleeving the valve core and the valve seat therein; the valve core can axially move along the linear groove in the valve cover under the action of fluid.

Description

Built-in one-way valve

Technical Field

The invention relates to the technical field of automobile vacuum booster devices, in particular to a built-in one-way valve in a vacuum pipeline.

Background

Currently, the check valve is widely applied to various fields, taking the field of vacuum booster devices as an example, the check valve used in pipeline connection has a larger appearance and generally consists of a valve seat, a valve plate, a valve cover and a spring; firstly, the check valve is externally connected in a pipeline, so that a certain assembly space is occupied, secondly, the internal structure of the check valve is complex, the problems of incapability of resetting and rust and the like of the spring are easy to occur, the sealing performance is poor, the stability of the check valve is influenced, and the whole service life of a product is shortened.

Disclosure of Invention

The invention aims to solve the technical problem of providing the one-way valve which has the advantages of simple structure, convenient opening and good sealing performance and can be arranged in a pipeline.

In order to solve the technical problems, the technical scheme of the invention is as follows: a built-in one-way valve comprises a valve seat, a rubber ring, a valve core and a valve cover; the valve seat is an open cylinder at two ends, a fluid channel is arranged in the valve seat along the axial direction, an annular groove for assembling a rubber ring is formed in the outer peripheral surface of the valve seat, and a plurality of axial straight grooves are uniformly distributed below the annular groove on the outer peripheral surface of the valve seat; the valve core comprises a T-shaped plug and a plurality of clamping jaws uniformly distributed around the T-shaped plug, wherein the T-shaped plug comprises a disc part and a circular ring part connected to the middle of the disc part, the circular ring part is of a net structure or is provided with a porous structure, the roots of the clamping jaws are all connected to the periphery of the disc part, the inner sides of the upper parts of the clamping jaws are all provided with lugs, the positions of the clamping jaws correspond to a straight groove on the outer peripheral surface of a valve seat, and the lugs are embedded into the straight groove and can axially move in the straight groove; the rubber ring is arranged in an annular groove on the outer peripheral surface of the valve seat, the valve core is attached to the lower part of the valve seat through the clamping jaw and can seal a fluid channel of the valve seat through the T-shaped plug, and the valve cover is a tubular body and is used for sleeving the valve core and the valve seat therein; the valve core can axially move along a straight slot in the valve cover under the action of fluid.

Preferably, the through holes in the valve cover are stepped holes, and can be sequentially divided into a first through hole, a second through hole and a third through hole from top to bottom according to different apertures, wherein the aperture of the second through hole is larger than that of the first through hole, larger than or equal to that of the third through hole, and the length of the second through hole is larger than that of the first through hole.

Preferably, the fluid channel in the valve seat is a stepped hole, and the aperture of the lower part of the valve seat is smaller than that of the upper part.

Further, an error proofing device is arranged on the periphery of the valve cover.

Further, the periphery of the valve core disc part is provided with an air passing hole.

Preferably, the valve seat, the valve core and the valve cover are all plastic parts.

Preferably, the number of the straight grooves and the clamping jaws is four.

The beneficial effects of the invention are as follows: the valve seat is a cylinder, and the valve cover is a tubular body, so that the valve cover can be conveniently arranged in a pipeline; because the valve core can axially move along the length direction of the valve seat, the valve has the advantages of convenient opening, good sealing performance, simple structure, easy processing, cost reduction and the like, and the spring is not required to be arranged, so that the risk caused by the fact that the spring cannot be reset and rusted is fundamentally eliminated.

Drawings

FIG. 1 is a schematic diagram of an explosion structure of a check valve according to an embodiment of the present invention;

FIG. 2 is a schematic view of the exterior structure of the valve seat of FIG. 1;

FIG. 3 is a schematic cross-sectional view of the valve seat of FIG. 1;

FIG. 4 is a schematic view of the valve core in FIG. 1;

FIG. 5 is a schematic cross-sectional view of the valve housing of FIG. 1;

the reference numerals are:

10-valve seat 11-annular groove 12-straight groove

20-rubber ring 30-valve core 31-clamping jaw

31 a-bump 32-disk 33-ring

40-valve housing 41-first through hole 42-second through hole

43-third through hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

As shown in fig. 1 to 5, a built-in check valve includes a valve seat 10 made of plastic material, a valve core 30, a valve cover 40, and a rubber ring 20; the valve seat 10 is an open-ended cylinder, a fluid channel is arranged in the valve seat along the axial direction, an annular groove 11 for assembling a rubber ring is arranged on the outer peripheral surface of the valve seat 10, and four axial straight grooves 12 are uniformly distributed on the outer peripheral surface of the valve seat 10 below the annular groove 11; the valve core 30 comprises a T-shaped plug and four clamping jaws 31 uniformly distributed around the T-shaped plug, wherein the T-shaped plug comprises a disc part 32 and a circular ring part 33 connected to the middle of the disc part 32, the periphery of the disc part 32 is provided with air passing holes, the circular ring part 33 is of a net structure or is provided with a porous structure, the roots of the four clamping jaws 31 are all connected to the periphery of the disc part 32, the inner sides of the upper parts of the four clamping jaws 31 are all provided with protruding blocks 31a, the positions of the four clamping jaws 31 correspond to a straight groove 12 on the outer peripheral surface of a valve seat, and the protruding blocks 31a are embedded into the straight groove 12 and can axially move in the straight groove 12; the rubber ring 20 is arranged in the annular groove 11 on the outer peripheral surface of the valve seat, the valve core 30 is attached to the lower part of the valve seat 10 through the clamping jaw 31 and can seal the fluid passage of the valve seat 10 through the T-shaped plug, and the valve cover 40 is a tubular body and is used for sleeving the valve core 30 and the valve seat 10 therein; the spool 30 is axially movable along the spool 12 within the housing 40 under the influence of fluid.

As shown in fig. 3, the fluid passage in the valve seat 10 is a stepped hole, and the aperture of the lower portion of the valve seat 10 is smaller than that of the upper portion.

As shown in fig. 5, the through holes in the valve cover 40 are stepped holes, and can be sequentially divided into a first through hole 41, a second through hole 42 and a third through hole 43 from top to bottom according to different apertures, wherein the aperture of the second through hole 42 is larger than that of the first through hole 41 and larger than that of the third through hole 43, and the length of the second through hole 42 is larger than that of the first through hole 41 and larger than that of the third through hole 43; an error preventing means is provided on the outer circumference of the valve housing 40.

Since the valve seat 10 is a cylinder and the valve cover 40 is a tubular body, the valve cover can be conveniently arranged in a pipeline; because the valve core 30 can axially move along the length direction of the valve seat 10, the valve has the advantages of convenient opening, good sealing performance, simple structure, easy processing, cost reduction and the like.

The above embodiment is a preferred implementation of the present invention, but in addition, the present invention may be implemented in other ways, and any obvious substitution is within the scope of the present invention without departing from the concept of the present technical solution.

In order to facilitate understanding of the improvements of the present invention over the prior art, some of the figures and descriptions of the present invention have been simplified, and some other elements have been omitted from this document for clarity, as will be appreciated by those of ordinary skill in the art.

Claims

1. An embedded one-way valve, which is characterized in that: comprises a valve seat (10), a rubber ring (20), a valve core (30) and a valve cover (40); the valve seat (10) is an open-ended cylinder, a fluid channel is axially arranged in the valve seat (10), an annular groove (11) for assembling a rubber ring is formed in the outer peripheral surface of the valve seat (10), and a plurality of axial straight grooves (12) are uniformly distributed below the annular groove (11); the valve core (30) comprises a T-shaped plug and a plurality of clamping jaws (31) which are uniformly distributed around the T-shaped plug, wherein the T-shaped plug comprises a disc part (32) and a circular ring part (33) which is connected with the middle of the disc part (32), the circular ring part (33) is of a net structure or is provided with a porous structure, the roots of the clamping jaws (31) are all connected to the periphery of the disc part (32), the inner sides of the upper parts of the clamping jaws (31) are all provided with protruding blocks (31 a), the positions of the clamping jaws (31) correspond to a straight groove (12) on the outer peripheral surface of the valve seat (10), and the protruding blocks (31 a) are embedded into the straight groove (12) and can axially move in the straight groove (12); the rubber ring (20) is arranged in an annular groove (11) on the outer peripheral surface of the valve seat (10), the valve core (30) is attached to the lower part of the valve seat (10) through a clamping jaw (31) and can seal a fluid channel of the valve seat (10) through a T-shaped plug, and the valve cover (40) is a tubular body and is used for sleeving the valve core (30) and the valve seat (10) in the tubular body; the valve core (30) can axially move along the straight groove (12) in the valve cover (40) under the action of fluid.

2. The built-in check valve according to claim 1, wherein: the through holes in the valve cover (40) are stepped holes, the valve cover can be sequentially divided into a first through hole (41), a second through hole (42) and a third through hole (43) from top to bottom according to different apertures, the aperture of the second through hole (42) is larger than that of the first through hole (41) and larger than that of the third through hole (43), and the length of the second through hole (42) is larger than that of the first through hole (41) and larger than that of the third through hole (43).

3. The built-in check valve according to claim 1 or 2, wherein: an error proofing device is arranged on the periphery of the valve cover (40).

4. The built-in check valve according to claim 1, wherein: the fluid channel in the valve seat (10) is a stepped hole, and the aperture of the lower part of the valve seat is smaller than that of the upper part.

5. The built-in check valve according to claim 1 or 2, wherein: the periphery of the valve core disc part (32) is provided with an air passing hole.

6. The built-in check valve according to claim 1 or 2, wherein: the valve seat (10), the valve core (30) and the valve cover (40) are all plastic parts.

7. The built-in check valve according to claim 1 or 2, wherein: the number of the straight grooves (12) and the clamping jaws (31) is four.