阅读说明：本技术 单向阀 (One-way valve ) 是由 熊匀均 林元阳 张克鹏 于 2018-09-04 设计创作，主要内容包括：本发明提供了一种单向阀,该单向阀包括：阀体,具有空腔；导向组件,固定设置在空腔内；活塞,可移动地设置在导向组件上；止转结构,设置在活塞与导向组件之间,止转结构用于限制活塞相对导向组件转动。通过本申请能够解决现有技术中的单向阀在使用时会发出噪音的问题。(The present invention provides a check valve, comprising: a valve body having a cavity; the guide assembly is fixedly arranged in the cavity; the piston is movably arranged on the guide assembly; and the rotation stopping structure is arranged between the piston and the guide assembly and is used for limiting the piston to rotate relative to the guide assembly. Can solve the problem that the check valve among the prior art can send the noise when using through this application.)

1. A one-way valve, comprising:

a valve body (10) having a cavity;

a guide assembly (20) fixedly disposed within the cavity;

a piston (30) movably disposed on the guide assembly (20);

the anti-rotation structure is arranged between the piston (30) and the guide assembly (20) and is used for limiting the piston (30) to rotate relative to the guide assembly (20).

2. The check valve of claim 1, further comprising an elastic member (40), wherein one end of the elastic member (40) abuts against the piston (30), the other end of the elastic member (40) abuts against the guide assembly (20), and the rotation stopping structure is arranged between the elastic member (40) and the piston (30) and between the elastic member (40) and the guide assembly (20).

3. The non-return valve according to claim 2, characterized in that the piston (30) is provided with a first rotation stop hole (31), and one end of the elastic member (40) is inserted and matched with the first rotation stop hole (31).

4. The non-return valve according to claim 2, characterized in that the guide assembly (20) is provided with a second rotation stop hole (21), and the other end of the elastic member (40) is inserted and matched with the second rotation stop hole (21).

5. A non-return valve according to claim 3, characterised in that the piston (30) comprises a first stage (32) and a second stage (33) connected to each other, the first stage (32) having a larger diameter than the second stage (33), the first anti-rotation hole (31) being provided on the end face between the first stage (32) and the second stage (33), the guide assembly (20) being located on one side of the second stage (33).

6. The non-return valve according to claim 5, characterized in that the second stage (33) is provided with a guide hole (34) in axial direction, the guide assembly (20) being partially arranged within the guide hole (34).

7. The non-return valve according to claim 4, characterized in that the guide assembly (20) comprises:

the supporting baffle (22) is arranged in the cavity, and the second rotation stopping hole (21) is formed in the supporting baffle (22);

one end of the guide column (23) is fixedly connected with the supporting baffle plate (22), and the piston (30) is movably arranged at the other end of the guide column (23).

8. The non-return valve according to claim 7, characterized in that the support baffle (22) is provided with a central hole (24) and a through-flow hole (25), one end of the guide post (23) being inserted in the central hole (24).

9. The non-return valve according to claim 8, characterized in that a plurality of through-flow holes (25) are provided in the support baffle (22), the plurality of through-flow holes (25) being arranged on the support baffle (22) symmetrically about the central hole (24).

10. The one-way valve of claim 1, further comprising:

the retainer ring (50) is fixedly arranged in the cavity and is positioned on one side, far away from the piston (30), of the guide assembly (20), and the retainer ring (50) is used for limiting the guide assembly (20) to move relative to the valve body (10).

Technical Field

The invention relates to the technical field of one-way valves, in particular to a one-way valve.

Background

At present, an existing check valve generally includes a valve body, a piston movably disposed in the valve body, and a spring connected to the piston to provide a pre-tightening force to the piston through the spring, so that the valve body is in a state of being communicated with the outside or being closed through the movement of the piston.

When the existing check valve is conducted, fluid can flow to the other end of the valve body from one end of the valve body to the piston, the fluid can cause the piston to rotate in the flowing process, and therefore the piston and other parts in the valve body can rub, the check valve can generate noise when in use, and the service life of the check valve is shortened.

Disclosure of Invention

The invention provides a one-way valve, which aims to solve the problem that the one-way valve in the prior art generates noise when in use.

The present invention provides a check valve, comprising: a valve body having a cavity; the guide assembly is fixedly arranged in the cavity; the piston is movably arranged on the guide assembly; and the rotation stopping structure is arranged between the piston and the guide assembly and is used for limiting the piston to rotate relative to the guide assembly.

Furthermore, the check valve still includes the elastic component, the one end and the piston butt of elastic component, the other end and the guide assembly butt of elastic component, all be provided with between elastic component and the piston, between elastic component and the guide assembly and spline the structure.

Furthermore, a first rotation stopping hole is formed in the piston, and one end of the elastic piece is in inserting fit with the first rotation stopping hole.

Furthermore, a second rotation stopping hole is formed in the guide assembly, and the other end of the elastic piece is in insertion fit with the second rotation stopping hole.

Further, the piston comprises a first stage and a second stage which are connected with each other, the diameter of the first stage is larger than that of the second stage, a first rotation stopping hole is formed in the end face between the first stage and the second stage, and the guide assembly is located on one side of the second stage.

Further, the second stage is provided with a guide hole in the axial direction, and the guide assembly is partially arranged in the guide hole.

Further, the guide assembly includes: the supporting baffle is arranged in the cavity, and a second rotation stopping hole is formed in the supporting baffle; the guide post, the one end and the supporting baffle fixed connection of guide post, the movably setting of piston is at the other end of guide post.

Furthermore, a central hole and a through flow hole are formed in the supporting baffle, and one end of the guide column penetrates through the central hole.

Furthermore, a plurality of through flow holes are formed in the supporting baffle plate, and the through flow holes are symmetrically formed in the supporting baffle plate by taking the central hole as a center.

Further, the check valve further includes: and the check ring is fixedly arranged in the cavity and is positioned on one side of the guide assembly, which is far away from the piston, and the check ring is used for limiting the movement of the guide assembly relative to the valve body.

By applying the technical scheme of the invention, the one-way valve comprises a valve body, a guide assembly, a piston and a rotation stopping structure. The piston is movably arranged on the guide assembly, and a rotation stopping structure is arranged between the guide assembly and the piston and can limit relative rotation between the guide assembly and the piston. Through the check valve that this application provided, when can making the fluid flow in the valve, owing to set up the structure of splining, can prevent that the fluid from driving the piston and rotating, and then can avoid rotating by the piston and cause the noise to can reduce the piston and take place the friction with other parts, and then reduce piston wearing and tearing, improve check valve's life.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 illustrates a schematic structural diagram of a check valve provided in accordance with an embodiment of the present invention;

FIG. 2 shows a schematic structural view of the piston of FIG. 1;

FIG. 3 shows a schematic structural view of the guide assembly of FIG. 1;

fig. 4 shows a schematic structural view of the support baffle of fig. 3.

Wherein the figures include the following reference numerals:

10. a valve body; 20. a guide assembly; 21. a second rotation stop hole; 22. a support baffle; 23. a guide post; 24. a central bore; 25. a through-flow aperture; 30. a piston; 31. a first rotation stop hole; 32. a first stage; 33. a second stage; 34. a guide hole; 40. an elastic member; 50. and a retainer ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, an embodiment of the present invention provides a check valve including: valve body 10, guide assembly 20, piston 30 and the structure of splines. Specifically, the valve body 10 has a cavity for providing a flow path for the fluid. The guide assembly 20 is disposed in the cavity, the piston 30 is movably disposed on the guide assembly 20, and the guide assembly 20 is used for guiding the piston 30 to move. The piston 30 cooperates with the valve body 10 to provide the check valve with an on state and an off state and fluid can only flow from one end of the valve body 10 to the other end of the valve body 10. The rotation stopping structure is arranged between the piston 30 and the guide assembly 20, and the rotation stopping structure is arranged to limit the rotation of the piston 30 relative to the guide assembly 20.

The check valve provided by the embodiment is applied, and comprises a valve body 10, a guide assembly 20, a piston 30 and a rotation stopping structure. Wherein the piston 30 is movably disposed on the guide assembly 20, and a rotation stopping structure is disposed between the guide assembly 20 and the piston 30, by which relative rotation between the guide assembly 20 and the piston 30 can be restricted. Through the check valve that this application provided, when can making fluid flow in the valve, owing to set up the structure of splining, can prevent that fluid from driving piston 30 and rotating, and then can avoid rotating by piston 30 and cause the noise to can reduce piston 30 and take place the friction with other parts, and then reduce piston 30 wearing and tearing, improve check valve's life.

Specifically, the check valve further comprises an elastic element 40, one end of the elastic element 40 abuts against the piston 30, the other end of the elastic element 40 abuts against the guide assembly 20, and the elastic element 40 is arranged to provide a pretightening force for the piston 30, so that the piston 30 can be moved and opened only when the fluid pressure on the piston 30 is greater than the pretightening force. In the present embodiment, the rotation stopping structure is provided between the elastic member 40 and the piston 30 and between the elastic member 40 and the guide unit 20. Wherein, the elastic member 40 may be a spring.

As shown in fig. 2, in particular, the rotation stopping structure includes a first rotation stopping hole 31, the first rotation stopping hole 31 is disposed on the piston 30, and one end of the elastic member 40 is inserted into and engaged with the first rotation stopping hole 31, so that the elastic member 40 is connected to the piston 30.

As shown in fig. 3 and 4, the rotation stopping structure further includes a second rotation stopping hole 21, the second rotation stopping hole 21 is disposed on the guide assembly 20, and the other end of the elastic member 40 is inserted into and engaged with the second rotation stopping hole 21, so that the elastic member 40 is connected to the guide assembly 20. The guide assembly 20 and the piston 30 can be connected by the elastic member 40, and the piston 30 connected to the guide assembly 20 can be prevented from rotating relative to each other because the guide assembly 20 and the valve body 10 cannot rotate relative to each other. The rotation of the piston 30 can be restricted by the elastic member 40, the structure of the device is simplified, and the manufacturing can be facilitated.

As shown in fig. 2, the piston 30 specifically includes a first stage 32 and a second stage 33 connected to each other, a diameter of the first stage 32 is larger than a diameter of the second stage 33, a first rotation stop hole 31 is provided on an end surface between the first stage 32 and the second stage 33, and the guide assembly 20 is located at one side of the second stage 33. Providing a first anti-rotation hole 31 on the end surface between the first stage 32 and the second stage 33 facilitates the connection of the elastic member 40 with the first anti-rotation hole 31. In the embodiment, an annular groove is formed at one end of the first stage 32, which is far away from the second stage 33, and can be used for installing a sealing element, so that the sealing element can be matched with the inner wall of the valve body 10 for sealing, and the sealing performance of the check valve is improved.

Specifically, the second stage 33 is provided with a guide hole 34 in the axial direction, and the guide assembly 20 is partially disposed in the guide hole 34. Specifically, the guide post 23 of the guide assembly 20 is disposed in the guide hole 34 so that the piston 30 moves in the extending direction of the guide post 23.

As shown in fig. 3 and 4, the guide assembly 20 includes a support fence 22 and a guide post 23. Wherein, the supporting baffle 22 is arranged in the cavity, and the supporting baffle 22 is provided with a second rotation stopping hole 21. One end of the guide column 23 is fixedly connected with the support baffle 22, and the piston 30 is movably arranged at the other end of the guide column 23. The second rotation stopping hole 21 is formed in the supporting baffle 22 to facilitate the connection of the elastic member 40 with the second rotation stopping hole 21. And the guide assembly formed by the support baffle 22 and the guide column 23 is simple in structure and convenient to process and install.

Specifically, the support damper 22 is provided with a center hole 24 and a through-flow hole 25, and one end of the guide post 23 is inserted into the center hole 24. In order to prevent the guide post 23 from moving relative to the support baffle 22, a fastener may be disposed between the guide post 23 and the support baffle 22 to fix the guide post 23, and in this embodiment, the guide post 23 and the support baffle 22 may be connected and fixed by riveting. By providing the through-flow hole 25 in the support baffle 22, when the piston 30 is opened, fluid can flow through the through-flow hole 25 to the other end of the valve body 10.

The support baffle 22 is provided with a plurality of through-holes 25, and the plurality of through-holes 25 are symmetrically provided in the support baffle 22 with the center hole 24 as the center. This arrangement increases the flow area of the support baffle 22 and facilitates the machining of the through-flow holes 25. Specifically, the through-flow holes 25 may have a fan-shaped structure to increase the flow area as much as possible while securing the strength of the support baffle 22.

In this embodiment, the check valve further includes a retainer ring 50, the retainer ring 50 is fixedly disposed in the cavity and located on a side of the guide assembly 20 away from the piston 30, and the guide assembly 20 is limited from moving and rotating relative to the valve body 10 by the retainer ring 50.

Through the check valve that this embodiment provided, be connected the one end of elastic component 40 with piston 30, be connected the other end of elastic component 40 with guide assembly 20, so can prevent that piston 30 from driving piston 30 and rotating when fluid flows, and then can avoid piston 30 and other parts to take place the friction, noise when reducing the check valve and using to can reduce piston 30 wearing and tearing, prolong the life of check valve. Moreover, the one-way valve is simple in structure and convenient to process, disassemble and assemble.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.