CN219013461U - One-way valve with guide structure - Google Patents

Abstract

The utility model relates to a one-way valve with a guide structure, which comprises a valve seat with two ends communicated and an air inlet cap connected with one end of the valve seat, wherein the air inlet cap is provided with an air inlet communicated with an inner cavity of the valve seat, a valve core and an elastic piece for pushing the valve core to move are arranged in the valve seat, a shaft sleeve is also fixed in the valve seat, the inner wall of the air inlet is provided with a sliding sleeve part, the shaft sleeve and the sliding sleeve part are respectively provided with a sliding hole and an air hole, the valve core and the elastic piece are positioned between the shaft sleeve and the sliding sleeve part, two ends of the valve core are respectively provided with a sliding rod part, and the sliding rod parts are respectively connected with the sliding holes in a sliding way; one end of the elastic piece is abutted with the shaft sleeve, and the other end is abutted with the valve core. When the valve core moves, the sliding rod parts at the two ends move in the sliding holes, so that the moving direction of the valve core is limited, the valve core cannot deflect in the moving process, the problem that the valve core is blocked due to deflection of the valve core after frequent work is effectively prevented, the follow-up frequency of the valve core is reduced, and the cost is reduced.

Description

One-way valve with guide structure

Technical Field

The utility model relates to the field of one-way valves, in particular to a one-way valve with a guiding structure.

Background

The check valve is a valve through which compressed air can only flow from the intake end to the exhaust end. When air pressure flows into the valve core from the air inlet end to overcome the acting force of the spring, the valve core opens the air flow to pass through; when the air flow at the air inlet end is disconnected, the valve core is in a closed state under the action of the acting force of the spring and the residual air pressure at the air outlet end, and the air flow cannot circulate. The one-way valve is applied to the occasion that the air flow is not allowed to flow reversely, and is a direction control valve which can only flow in one direction but not flow reversely. Because the valve core can shift to one side in the motion process under the action of the working medium of the one-way valve, friction is generated between the valve core and the inner wall of the valve body, the valve core can be damaged due to long-time friction, the sealing performance is reduced, and even in a closed state, reverse air flow can possibly pass through the one-way valve, so that the service life is greatly shortened.

Disclosure of Invention

The utility model provides a one-way valve with a guide structure, which aims to solve the problem that a valve core in the prior art is deviated to one side in the moving process, and ensures that the valve core does linear motion and cannot deviate.

In order to solve the technical problems, the utility model adopts the following technical scheme: the one-way valve with the guide structure comprises a valve seat with two ends communicated and an air inlet cap connected with one end of the valve seat, wherein the air inlet cap is provided with an air inlet hole communicated to an inner cavity of the valve seat, a valve core and an elastic piece pushing the valve core to move are arranged in the valve seat, a shaft sleeve is further fixed in the valve seat, the inner wall of the air inlet hole is provided with a sliding sleeve part, the shaft sleeve and the sliding sleeve part are both provided with sliding holes and air holes, the valve core and the elastic piece are positioned between the shaft sleeve and the sliding sleeve part, and two ends of the valve core are both provided with sliding rod parts which are respectively connected with the sliding holes in a sliding manner; one end of the elastic piece is abutted with the shaft sleeve, and the other end of the elastic piece is abutted with the valve core. The shaft sleeve can be integrally formed with the valve seat, or a step groove is formed in the valve seat, and the shaft sleeve is arranged on the step groove. The sliding part can be integrally formed with the air inlet cap, or the air inlet cap is provided with a step groove, and the sliding part is arranged on the step groove.

In the above technical solution, the valve seat is a through structure, so that a cavity is formed in the valve seat, compressed air enters the cavity in the valve seat from the air inlet hole of the air inlet cap, and the valve core is pushed by the elastic element to block the air inlet hole in the initial state, so that when compressed air enters the cavity in which the valve core is located through the air hole and overcomes the acting force of the elastic element to push the valve core open, the compressed air enters the cavity of the valve seat and is discharged from the air hole of the shaft sleeve. In the moving process of the valve core, the sliding rod parts at the two ends of the valve core slide along the sliding holes respectively, the two ends of the valve core are limited in the sliding holes at the same time, and the valve core cannot deviate in the valve seat.

Preferably, the valve core comprises a sealing gasket and a valve arranged on one end face of the sealing gasket, the valve is located in the end face range of the sealing gasket, the valve stretches into the air inlet hole, and the sealing gasket is abutted with one end of the air inlet hole. The area of the valve extending into the air inlet hole, which is contacted with the compressed air, is smaller, and the compressed air can enter the space for reducing the air inlet hole, so that the compressed air has larger pressure to push the valve to slide against the action of the elastic piece.

Preferably, the outer surface of the valve forms a gap with the inner wall of the air inlet hole. The valve and the inner wall of the air inlet hole are not prevented from moving by any friction force, so that the valve is easier to push when being acted by compressed air, and the moving efficiency of the valve core is improved.

Preferably, one end of the air inlet hole is provided with a convex ring which is abutted with the end face of the sealing gasket. The sealing gasket is abutted with the bulge loop, so that the tightness of the one-way valve in the initial state and the abutting state can be kept, but the sealing gasket and the bulge loop can be quickly separated from each other, compressed gas can be filled between the sealing gasket and the inner wall of the air inlet cap as soon as possible, the air inlet speed is increased, and the efficiency of pushing the valve core to move is increased.

Preferably, a gap is formed between the outer side surface of the sealing gasket and the inner side wall of the air inlet cap. The sealing gasket and the inner wall of the air inlet hole do not have any friction force to prevent the valve core from moving, so that the sealing gasket is easier to push when being acted by compressed air, and the moving efficiency of the valve core is improved.

Preferably, the valve core further comprises a blocking piece part arranged on the other end face of the sealing gasket, the blocking piece part is in butt joint with the elastic piece, one sliding rod part is connected with the blocking piece part, and the other sliding rod part is connected with the valve. The elastic piece pushes the valve core to block the air inlet hole of the air inlet cap by pushing the baffle plate part, the combined action of the baffle plate part and the valve increases the strength of the valve core, the valve core is not easy to deform due to the impact of compressed air, and the sealing performance is prevented from being reduced due to the fact that the shape of the sealing gasket is not recoverable due to long deformation duration.

Preferably, the baffle part and the valve are both made of hard materials, and can be made of hard plastics or metals, and the sealing gasket is made of rubber materials. The baffle plate part and the movement are made of hard materials, so that the deformation resistance of the sealing gasket is better.

Preferably, the elastic piece is a spring and is sleeved on the sliding rod part near one side of the shaft sleeve. The spring is limited by the slide rod part and cannot be separated or deflected, the elastic direction is consistent with the moving square of the valve core, and the stable formation of the valve core is further ensured, and the valve core cannot deflect.

Preferably, the air holes are arranged in a plurality of circumferentially equidistant mode, and the axes of the sliding holes are all collinear with the axes of the shaft sleeve and the sliding sleeve part. The multiple air holes can increase the inlet and outlet efficiency of the compressed air, meanwhile, the pressure stress points of the compressed air given to the valve core are uniformly distributed on the valve core by the circumference of the air holes in an equidistant mode, so that the valve core is uniformly stressed, and the problem of deviation of the valve core is further avoided.

Preferably, one end of the sliding rod part far away from the valve core is hemispherical. The end of the sliding rod part with the hemispherical shape is easier to be installed in the sliding hole during production and assembly.

Compared with the prior art, the utility model has the beneficial effects that: when the valve core moves, the sliding rod parts at the two ends move in the sliding holes, so that the moving direction of the valve core is limited, the valve core cannot deflect in the moving process, the problem that the valve core is blocked due to deflection of the valve core after frequent work is effectively prevented, the follow-up frequency of the valve core is reduced, and the cost is reduced.

Drawings

FIG. 1 is a schematic view of a check valve with a guiding structure according to the present utility model;

FIG. 2 is a schematic view of the structure of the sliding hole and air hole of the present utility model;

FIG. 3 is an enlarged partial view of the A position of FIG. 1;

FIG. 4 is an enlarged partial view of the position B of FIG. 1;

fig. 5 is a partial enlarged view of the C position of fig. 1.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the present patent; for the purpose of better illustrating the embodiments, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationship depicted in the drawings is for illustrative purposes only and is not to be construed as limiting the present patent.

The same or similar reference numbers in the drawings of embodiments of the utility model correspond to the same or similar components; in the description of the present utility model, it should be understood that, if there are orientations or positional relationships indicated by terms "upper", "lower", "left", "right", "long", "short", etc., based on the drawings, this is merely for convenience in describing the present utility model and simplifying the description, and is not an indication or suggestion that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so that the terms describing the positional relationships in the drawings are merely for illustration and not to be construed as limitations of the present patent, and that it is possible for those of ordinary skill in the art to understand the specific meaning of the terms described above according to the specific circumstances.

The technical scheme of the utility model is further specifically described by the following specific embodiments with reference to the accompanying drawings:

example 1

1-2 show an embodiment of a one-way valve with a guiding structure, comprising a valve seat 1 with two ends communicated and an air inlet cap 2 connected with one end of the valve seat 1, wherein the air inlet cap 2 is provided with an air inlet 201 communicated with an inner cavity of the valve seat 1, a valve core 3 and an elastic piece 4 pushing the valve core 3 to move are arranged in the valve seat 1, a stepped groove is arranged in the valve seat 1, a shaft sleeve 101 is fixed on the stepped groove, the inner wall of the air inlet 201 is provided with a sliding sleeve part 202 integrally formed with the air inlet cap, the shaft sleeve 101 and the sliding sleeve part 202 are respectively provided with a sliding hole 5 and an air hole 6, the valve core 3 and the elastic piece 4 are positioned between the shaft sleeve 101 and the sliding sleeve part 202, two ends of the valve core 3 are respectively provided with a sliding rod part 301, and the sliding rod part 301 is respectively connected with the sliding hole 5 in a sliding way; one end of the elastic member 4 abuts against the sleeve 101, and the other end abuts against the valve element 3. When the valve core 3 moves, the sliding rod parts 301 at the two ends move in the sliding holes 5, so that the moving direction of the valve core 3 is limited, no deflection occurs in the moving process of the valve core 3, the problem that the valve core 3 is deflected to be blocked after frequent work of the check valve is effectively prevented, the frequency of the follow-up replacement of the check valve is reduced, and the cost is reduced.

In one embodiment, the valve core 3 comprises a sealing gasket 302, a valve 303 and a baffle part 304, wherein the valve 303 and the baffle part 304 are arranged on one end face of the sealing gasket 302, the valve 303 and the baffle part 304 are positioned in the end face range of the sealing gasket 302, in the embodiment, the valve 303, the baffle part 304 and the sealing gasket 302 are all circular in cross section perpendicular to the axis, the diameter of the circular cross section of the sealing gasket 302 is larger than that of the baffle part 304 and the valve 303, the valve 303 extends into the air inlet hole 201, and the sealing gasket 302 is abutted against one end of the air inlet hole 201. The shutter portion 304 abuts against the elastic member 4, one of the slide bar portions 301 is connected to the shutter portion 304, and the other slide bar portion 301 is connected to the shutter 303. The area of the shutter 303 extending into the air inlet hole 201 contacting the compressed air is smaller and a space for reducing the air inlet hole 201 can be accessed, so that the compressed air has a larger pressure to push the shutter 303 to slide against the action of the elastic member 4. The elastic piece 4 pushes the valve core 3 to block the air inlet hole 201 of the air inlet cap 2 by pushing the baffle plate part 304, the combined action of the baffle plate part 304 and the valve 303 increases the strength of the valve core 3, the valve core is not easy to deform due to the impact of compressed air, and the reduction of the sealing performance caused by the unrecoverable shape of the sealing gasket 302 due to the long duration of deformation is avoided.

Specifically, the blocking piece 304 and the shutter 303 are made of hard materials, and may be made of hard plastics, metals, or the like, and the gasket 302 is made of rubber materials. The flap portion 304 and the rigid material allow for improved resistance to deformation of the gasket 302.

In one embodiment, as shown in fig. 3, the outer surface of the shutter 303 forms a gap with the inner wall of the air intake hole 201. The valve 303 is prevented from moving by any friction force between the valve 303 and the inner wall of the air inlet 201, so that the valve 303 is easier to push when being acted by compressed air, and the moving efficiency of the valve core 3 is improved.

In one embodiment, as shown in fig. 4, one end of the air intake hole 201 is provided with a raised ring 203 abutting against the end face of the gasket 302. The sealing gasket 302 is abutted with the raised ring 203, so that the tightness of the check valve in the initial state and the abutting state can be maintained, but the sealing gasket and the raised ring can be quickly separated, compressed gas can be filled between the sealing gasket 302 and the inner wall of the air inlet cap 2 as soon as possible, the air inlet speed is increased, and the efficiency of pushing the valve core 3 to move is increased. As shown in fig. 5, a gap is formed between the outer side surface of the gasket 302 and the inner side wall of the intake cap 2. The sealing gasket 302 does not have any friction force with the inner wall of the air inlet hole 201 to prevent the movement of the valve core 3, so that the sealing gasket 302 is easier to push when being acted by compressed air, and the movement efficiency of the valve core 3 is improved.

In one embodiment, the elastic member 4 is a spring and is sleeved on the slide rod portion 301 near one side of the sleeve 101. The spring is restricted by the slide rod part 301, so that the problem of detachment or deflection cannot occur, the elastic force direction is consistent with the moving square of the valve core 3, and the stable formation of the valve core 3 is further ensured, and the deflection cannot occur.

In one embodiment, the air holes 6 are arranged in a plurality of circumferentially equidistant modes, and the axes of the sliding holes 5 are all collinear with the axes of the shaft sleeve 101 and the sliding sleeve part 202. The air holes 6 can increase the inlet and outlet efficiency of the compressed air, meanwhile, the pressure stress points of the compressed air given to the valve core 3 are uniformly distributed on the valve core 3 by the circumference of the air holes 6 in an equidistant mode, so that the stress of the valve core 3 is uniform, and the problem of deviation caused by deviation of the valve core 3 is further avoided.

In one embodiment, the end of the sliding rod 301 remote from the valve core 3 is hemispherical. The end of the slide bar portion 301 having the hemispherical shape is more easily fitted into the slide hole 5 at the time of production assembly.

The working principle or working procedure of the above embodiment: when the air inlet end is in air, compressed air enters from the air inlet hole 201 of the air inlet cap 2 and then passes through the air hole 6, and because the valve core 3 is in an initial state, the elastic piece 4 pushes the sealing gasket 302 to block the air inlet hole 201, so when the compressed air enters the position of the valve 303 through the air hole 6 and overcomes the acting force of the elastic piece 4 to push up the valve core 3, the compressed air gradually enters into the cavity of the valve seat 1 and is discharged from the air hole 6 of the shaft sleeve 101. During the movement of the valve element 3, the slide rod portions 301 at the two ends of the valve element 3 slide along the slide holes 5, respectively, and the two ends of the valve element 3 are simultaneously restricted in the slide holes 5, so that the valve element 3 cannot deviate in the valve seat 1.

The beneficial effects of this embodiment are: the sliding rod parts 301 at the two ends move in the sliding holes 5 when the valve core 3 moves, so that the moving direction of the valve core 3 is limited, no deflection occurs in the moving process of the valve core 3, the problem that the valve core 3 is deflected to be blocked after frequent work of the check valve is effectively prevented, the follow-up frequency of the check valve is reduced, and the cost is reduced. It is to be understood that the above examples of the present utility model are provided by way of illustration only and not by way of limitation of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. The utility model provides a check valve with guide structure, includes disk seat (1) that both ends link up and with inlet cap (2) that disk seat (1) one end is connected, inlet cap (2) are provided with and communicate to inlet port (201) of disk seat (1) inner chamber, be provided with case (3) and promote in disk seat (1) elastic component (4) of case (3) motion, characterized in that, still be fixed with axle sleeve (101) in disk seat (1), the inner wall of inlet port (201) is provided with sliding sleeve portion (202), axle sleeve (101) with sliding sleeve portion (202) all are provided with slide hole (5) and gas pocket (6), case (3) with elastic component (4) are located between axle sleeve (101) with sliding sleeve portion (202), the both ends of case (3) all are provided with slide bar portion (301), slide bar portion (301) are connected with slide hole (5) respectively in a sliding way; one end of the elastic piece (4) is abutted with the shaft sleeve (101), and the other end is abutted with the valve core (3).

2. The one-way valve with the guide structure according to claim 1, wherein the valve core (3) comprises a sealing gasket (302) and a valve (303) arranged on one end face of the sealing gasket (302), the valve (303) is positioned in the range of the end face of the sealing gasket (302), the valve (303) stretches into the air inlet hole (201), and the sealing gasket (302) is abutted with one end of the air inlet hole (201); the slide bar portion (301) is connected to both ends of the shutter (303).

3. A one-way valve with a guide structure according to claim 2, characterized in that the outer surface of the shutter (303) forms a gap with the inner wall of the air intake hole (201).

4. A one-way valve with a guide structure according to claim 2, characterized in that one end of the air intake hole (201) is provided with a protruding ring (203) abutting against the end face of the gasket (302).

5. A one-way valve with a guide structure according to claim 4, characterized in that a gap is formed between the outer side surface of the gasket (302) and the inner side wall of the intake cap (2).

6. A one-way valve with a guide structure according to claim 2, characterized in that the valve body (3) further comprises a blocking piece portion (304) provided on the other end face of the gasket (302), the blocking piece portion (304) being in abutment with the elastic member (4), one of the slide bar portions (301) being connected to the blocking piece portion (304), and the other slide bar portion (301) being connected to the shutter (303).

7. A one-way valve with a guide structure according to claim 6, characterized in that the flap portion (304) and the shutter (303) are both made of hard materials, and the gasket (302) is made of rubber materials.

8. A one-way valve with guiding structure according to claim 1, characterized in that the elastic member (4) is a spring and is sleeved on the slide rod part (301) near one side of the shaft sleeve (101).

9. A one-way valve with guiding structure according to any one of claims 1-7, characterized in that the air holes (6) are provided in a plurality and circumferentially equidistant distribution, the axis of the sliding holes (5) being co-linear with the axis of the sleeve (101) and the sliding sleeve portion (202).

10. A one-way valve with guiding structure according to any one of claims 1-7, characterized in that the end of the slide rod part (301) remote from the valve core (3) is hemispherical.

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