CN210318669U

CN210318669U - Check valve structure for improving sealing effect

Info

Publication number: CN210318669U
Application number: CN201920716796.9U
Authority: CN
Inventors: 黄贤达
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-05-17
Filing date: 2019-05-17
Publication date: 2020-04-14
Anticipated expiration: 2029-05-17

Abstract

The utility model relates to a check valve structure for improving the sealing effect, which is mainly arranged inside a first body and a second body and is provided with a valve body, a ring body and a spring; the valve body is hollow and is provided with a ball head, and the valve body is made of soft materials. Therefore, when the valve body is pressed by a spring or the pressure of reverse fluid, the hollow valve body can provide excellent sealing effect by matching with the ball head.

Description

Check valve structure for improving sealing effect

Technical Field

The utility model relates to a valve manufacturing technical field, concretely relates to promote check valve structure of airtight effect.

Background

Check valve structures are common in many applications and have the function of providing a fluid that can only enter in a forward direction and close when flowing back in a reverse direction. Many known check valve structures suffer from leakage risk due to the deterioration of sealing capability caused by the compression loss and elastic fatigue of a packer part generated by physical reaction after long-term compression or action knocking due to the conventional annular gasket or flat gasket.

The most important design defect of the known check valve structure is that most of valve bodies for sealing are designed to be solid structures, and the hard structure design is liable to be unfavorable for matching with other peripheral structures to form a sealing effect due to the precision or combination tolerance of machine parts, which is a reason of poor sealing property. Furthermore, in the prior art, part of the valve body is designed to be a planar membrane body, and the sealing effect is not good when the valve body is closed. Further, it is known that the port in the check valve may affect the sealing effect due to the precision during manufacturing.

Therefore, the sealing structure of the existing check valve is still not perfect and needs to be improved.

The inventor is in view of this, especially in order to develop the utility model discloses, can utilize in the phase the utility model discloses a provide, improve the airtight shortcoming of current check valve, make the airtight function of check valve more perfect and ideal in the phase, accord with actual demand.

SUMMERY OF THE UTILITY MODEL

In order to improve the defects of the prior check valve which has poor sealing effect, the utility model discloses main aim at: the check valve structure can achieve the purpose of improving the sealing effect by means of the change of structural design.

The utility model discloses secondary aim at: the check valve structure can improve the sealing effect, indirectly reduce the frequency of maintaining or replacing the check valve, reduce the problem of shutdown or failure of equipment and reduce the maintenance cost.

To achieve the above object, the present invention provides a check valve structure: the check valve comprises a first body, a second body, a valve body, a ring body and a spring.

In a preferred embodiment, the first body has a first opening at one end, and the inner edge of the first opening is provided with a port, through which the first opening is communicated with a chamber located inside the first body.

In a preferred embodiment, the second body has a second opening through the center thereof, a positioning post is disposed at the inner end of the second body, a stop ring is disposed at the outer end of the positioning post, and an oil seal is disposed at the stop ring.

In one preferred embodiment, the valve body is disposed in the chamber adjacent to the port; one end of the valve body is provided with a ball head which is slightly hemispherical and hollow inside; the valve body is internally provided with a hollow space, namely the valve body is hollow; the valve body is preferably made of a soft material.

In a preferred embodiment, the ring body is disposed around the valve body, and one end of the ring body includes a plurality of sliders and hollow portions spaced apart from each other.

In a preferred embodiment, the spring is disposed between the ring body and the positioning post.

The utility model has the advantages that: when the valve body is pressed by a spring or the pressure of reverse fluid, the hollow valve body can provide excellent sealing effect by matching with the ball head.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a perspective view of the present invention;

fig. 2 is an exploded perspective view of the present invention;

FIG. 3 is a cross-sectional view of the present invention;

fig. 4 is a sectional view of the fluid check according to the present invention.

Description of the reference numerals

1 first body

11 first opening

12 chamber

13 pass through

2 second body

21 second opening

22 oil seal

23 locating column

24 baffle ring

3 valve body

31 ball head

32 hollow space

4 Ring body

41 slider

42 hollowed-out part

5, a spring.

Detailed Description

The technical solution in the embodiment of the present invention is clearly and completely described below with reference to the drawings in the embodiment of the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways different from the specific details set forth herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

Now, the structure composition of the check valve structure for improving the sealing effect of the present invention, and the efficacy thereof can be produced, by referring to the drawings of the specification, the following detailed description of the preferred embodiment of the present invention is given.

Referring to fig. 1 to 3, the check valve structure for improving the sealing effect of the present invention includes a first body 1, a second body 2, a valve body 3, a ring body 4 and a spring 5.

The first body 1 has a first opening 11 at one end, and a through hole 13 is formed in an inner edge of the first opening 11 and is communicated with a chamber 12 located inside the first body 11 through the through hole 13. The second body 2 has a second opening 21 through the center, a positioning post 23 is disposed at the inner end of the second body 2, a retaining ring 24 is disposed outward from the positioning post 23, and an oil seal 22 is disposed at the retaining ring 24. The valve body 3 is arranged in the cavity 12 and is adjacent to the through hole 13; one end of the valve body 3 is provided with a ball head 31, and the ball head 31 is slightly hemispherical and hollow; the valve body 3 has a hollow space 32 therein, and the valve body 3 is hollow; the valve body 3 is preferably made of a soft material. The ring body 4 is sleeved on the periphery of the valve body 3, and one end of the ring body 4 comprises a plurality of sliders 41 and hollow parts 42 which are arranged at intervals. The spring 5 is disposed between the ring 4 and the positioning post 23.

When assembling, the valve body 3, the ring body 4 and the spring 5 are sequentially loaded into the chamber 12, so that the first body 1 and the second body 2 are combined together by matching with the oil seal 22.

In the present invention, the check valve is set such that the fluid flows from the first opening 11 toward the second opening 21 in the forward direction; conversely, the fluid entering from the second opening 21 flows toward the first opening 11 to generate the anti-reverse effect.

As shown in fig. 3, when fluid enters from the first opening 11, the fluid pressure will push the valve body 3 to displace through the port 13, and further compress the spring 5, and the fluid can flow into the second opening 21 from the edge of the valve body 3 through the hollow parts 42 and finally flow out.

If no fluid enters the first opening 11, the spring 5 will force the sliding blocks 41 of the ring 4 and the valve body 3 to move towards the end of the first opening 11 by the elastic force of the spring 5, and the valve body 3 will block the through opening 13 by the ball 31. Since the valve body 3 is a hollow soft structure with a slight elasticity and a hemispherical structure is added, the sealing effect for the through hole 13 is excellent, and the sealing function of the through hole 13 is not affected by the precision problem during manufacturing.

As shown in fig. 4, when the fluid reversely enters from the second opening 21, the fluid directly enters the hollow space 32 of the valve body 3 by pressure, so as to quickly push the valve body 3 to displace and seal the port 13 by the ball 31, and the sealing effect of the ball 31 and the port 13 can be ensured by matching the continuous reverse pressure of the fluid and the elastic force of the spring 5, so as to generate the check function.

To sum up, the utility model discloses promote check valve structure of airtight effect, it utilizes to design into soft hollow structure with the valve body in the structure, and the special design of cooperation bulb can effectively promote the airtight effect of check valve really.

It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Claims

1. A check valve structure for improving sealing effect, comprising: the first body is communicated with one end and is provided with a first opening, and the inner edge of the first opening is provided with a through hole which is communicated with a cavity positioned in the first body;

a second body, through which a second opening is penetrated, the inner end edge of the second body is provided with a positioning column, and the second body is jointed with the first body;

a valve body disposed in the chamber and adjacent to the port; one end of the valve body is provided with a ball head, and a hollow space is arranged in the valve body;

the ring body is sleeved on the periphery of one end of the valve body, and one end of the ring body comprises a plurality of sliding blocks and hollow parts which are arranged at intervals;

a spring, which is arranged between the ring body and the positioning column.

2. The structure of claim 1, wherein the positioning post further comprises a retaining ring disposed outward, and the retaining ring is disposed with an oil seal.

3. The structure of claim 1, wherein the ball is hemispherical and hollow.

4. The structure of claim 1, wherein the fluid flow from the first opening to the second opening is forward.

5. The structure of claim 1, wherein a fluid entering from the second opening flows toward the first opening in a reverse direction to generate a check effect.