CN214425181U

CN214425181U - One-way valve

Info

Publication number: CN214425181U
Application number: CN202023227915.6U
Authority: CN
Inventors: 张军前; 牛高峰; 刘宇; 杨武成; 张康熙; 姚永鑫; 王佳鹏; 刘美红; 赵芸丽; 刘畅
Original assignee: Xi'an Hongqing Machinery Factory
Current assignee: Xi'an Hongqing Machinery Factory
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-10-19
Anticipated expiration: 2030-12-28

Abstract

A check valve comprises a joint and a shell which are coaxially arranged and are communicated with each other through an inner cavity, wherein one end of the joint is sleeved in the inner cavity of the shell and leaves a space with the inner cavity of the shell; the radial section of the valve core is larger than that of the inner cavity of the port in the joint; the spring is coaxially arranged between the spring support and the valve core. Through the reasonable setting to component structure, case overall volume and dead weight compare great reduction with existing equipment, arbitrary angle installation the utility model discloses a dead weight of its case of check valve is less to the opening pressure and the performance influence of check valve, and there is not frictional force case and check valve inner chamber, and the check valve wholeness can be stable in the use.

Description

One-way valve

Technical Field

The utility model belongs to the technical field of the check valve, concretely relates to check valve.

Background

As shown in fig. 7, the valve core of the currently used one-way valve is large in size, mostly made of metal material, sealed by a conical surface, and mainly positioned by the outer cylindrical surface of the valve core and the inner hole of the housing. When the opening pressure of the check valve is higher, the self weight of the valve core is greatly different from the elastic force of a spring in the check valve, and the self weight of the valve core can be ignored, so that the influence of the installation direction of the check valve and the weight of the valve core on the product performance can be ignored, and the requirements on the material, the weight and the positioning mode of the valve core are not strictly controlled; however, when the opening pressure of the one-way valve is small (3-5 kPa), the self weight of the valve core is not greatly different from the elastic force of a spring in the one-way valve, and at the moment, if the installation modes of the one-way valve are different, the vector directions of the self weight of the valve core are also different, and the self weight of the valve core has great influence on the opening pressure and the service performance of the one-way valve; meanwhile, the contact area of the valve core and the inner wall of the shell is large, the friction force is large, and the valve core cannot be moved when the opening pressure is small. And further causes the performance of the check valve to be unstable in the using process, thereby causing the system to fail.

Disclosure of Invention

To the problem, the utility model aims at providing a check valve through the reasonable setting to component structure, has solved the check valve when opening pressure is less in the use, causes the unstable problem of check valve performance because of the influence of case dead weight.

In order to achieve the above object, the utility model discloses the technical scheme who takes includes:

a check valve comprises a joint and a shell which are coaxially arranged and are communicated with each other through an inner cavity, wherein one end of the joint is sleeved in the inner cavity of the shell and leaves a space with the inner cavity of the shell; the radial section of the valve core is larger than that of the inner cavity of the port in the joint; the spring is coaxially arranged between the spring support and the valve core.

Preferably, the joint comprises a chamfer section, a first clamping groove section, a first splicing section, a second clamping groove section, a limiting section and a first extending section which are coaxially arranged from inside to outside; the first splicing section is matched with the structure of the inner cavity of the shell, and the outer diameters of the chamfer section, the first clamping groove section and the second clamping groove section are smaller than that of the first splicing section; the radial section of the limiting section is larger than the radial section of the inner cavity of the port in the shell, the limiting section is limited at the port in the shell, and the outer diameter of the first extending section is smaller than that of the limiting section.

Preferably, the spring support comprises a supporting surface and at least 3 clamping jaws uniformly distributed on the circumferential direction of the supporting surface, and through holes are formed between every two adjacent clamping jaws; the outer diameter of the first clamping groove section is smaller than that of the chamfer section, the end part of the clamping jaw is clamped in the first clamping groove section, and a space for arranging the valve core and the spring is reserved between the supporting surface and the port in the joint.

Preferably, the supporting surface is evenly provided with 4 claws in the circumferential direction.

Preferably, the casing is from inside to outside including coaxial sealing section, second concatenation section, changeover portion and the second extension section that sets up, and the internal diameter of sealing section and second concatenation section all is greater than the internal diameter of changeover portion and second extension section, and the external diameter of sealing section, second concatenation section and changeover portion all is greater than the external diameter of second extension section.

Preferably, a sealing ring is arranged between the inner cavity of the sealing section and the second clamping groove section.

Preferably, the valve core is integrally of a circular plate structure, and grooves are formed in two end faces of the valve core.

Preferably, the outer peripheral surface of the first extension section is circumferentially provided with a plurality of convex teeth.

Preferably, the outer peripheral surface of the second extension section is circumferentially provided with a plurality of convex teeth.

Compared with the prior art, the utility model has the advantages that:

(1) the utility model discloses a check valve, through the reasonable setting to the part structure, case whole volume and dead weight compare great reduction, arbitrary angle installation with current equipment the utility model discloses a dead weight of its case of check valve is less to the opening pressure and the performance influence of check valve, and there is not frictional force in case and the check valve inner chamber, and the check valve is the overall performance stability in the use.

(2) The one-way valve of the utility model, through the reasonable arrangement of the component structure, the chamfer section and the first clamping groove section are matched with the fixed spring support, and a space for arranging the valve core and the spring is reserved between the supporting surface of the spring support and the inner port of the joint; the first splicing section is structurally matched with the inner cavity of the shell to realize sealing; the spacing section realizes that the joint is axially spacing relative to the shell.

(3) The utility model discloses a check valve, through the reasonable setting to the part structure, the sealed section inner chamber of casing and the second draw-in groove intersegmental that connects are equipped with the sealing washer to the sealing of joint and casing inner chamber is strengthened.

Drawings

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

fig. 1 is a schematic structural view of the check valve of the present invention;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a schematic view of the structure of the joint of FIG. 1;

FIG. 4 is a schematic structural view of the housing of FIG. 1;

FIG. 5 is a perspective view of the spring support of FIG. 1;

FIG. 6 is a schematic structural view of the valve cartridge of FIG. 1;

fig. 7 is a schematic structural view of a conventional check valve.

The reference numerals in the figures denote:

1, a joint; 1a chamfer section; 1b a first slot segment; 1c a first splicing section; 1d a second slot segment; 1e a limiting section; 1f a first extension; 2, sealing rings; 3, a spring support; 3-0 through hole; 3-1, a support surface; 3-2, clamping jaws; 4, a valve core; 4-1 groove; 5, a spring; 6, a shell; 6a sealing section; 6b a second splicing section; 6c a transition section; 6d second extension.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings, which are provided for illustration and not for limitation of the invention.

A check valve comprises a connector 1 and a shell 6 which are coaxially arranged and are communicated with each other through inner cavities, wherein one end of the connector 1 is sleeved in the inner cavity of the shell 6 and a space is reserved between the connector 1 and the inner cavity of the shell 6, the inner cavity from the free end of the connector 1 to the free end of the shell 6 is a fluid channel, the check valve also comprises a spring support 3 which is coaxially connected with the inner end of the connector 1, and the spring support 3 is provided with a through hole 3-0 for communicating the inner cavity of the connector 1 and the inner cavity of the shell 6; the valve core 4 is arranged at an inner port of the joint 1, and the radial section of the valve core 4 is larger than that of an inner cavity of the inner port of the joint 1; the spring 5 is coaxially arranged between the spring support 3 and the valve core 4;

the function is as follows: the joint 1 and the shell 6 are used for bearing the whole one-way valve, one end of the joint 1 is sleeved in the inner cavity of the shell 6, a space reserved between the joint 1 and the inner cavity of the shell 6 is used for coating the spring support 3, the valve core 4 and the spring 5, and free ends of the joint 1 and the shell 6 are respectively externally connected with a pipeline; the spring support 3 is used for connecting one end of a spring 5, and arranging the spring 5 and the valve core 4 in a space between the spring support 3 and an inner port of the joint 1, one end of the spring 5 is fixed, and the other end of the spring 5 is connected with the valve core 4 positioned at the inner port of the joint 1; during the use, the air current is got into by connecting 1 free end, and when the gas pressure who connects 1 inner chamber was greater than spring 5's pretightning force, the gas pushed case 4 kept away from and connects 1 interior port for the check valve is opened, and the air current passes through spring support 3's through-hole 3-0, and by 6 free ends outputs of casing, and case 4 whole volume and dead weight compare great reduction with current equipment, arbitrary angle installation the utility model discloses an its case 4's of check valve dead weight is less to the opening pressure and the performance influence of check valve, and case 4 does not have frictional force with the check valve inner chamber, and the check valve wholeness can be stable in the use.

Preferably, the valve core 4 is made of any rubber material so as to reduce the self weight of the valve core.

Specifically, the joint 1 comprises a chamfer section 1a, a first clamping groove section 1b, a first splicing section 1c, a second clamping groove section 1d, a limiting section 1e and a first extending section 1f which are coaxially arranged from inside to outside;

the first splicing section 1c is matched with the inner cavity structure of the shell 6, and the outer diameters of the chamfer section 1a, the first clamping groove section 1b and the second clamping groove section 1d are all smaller than the outer diameter of the first splicing section 1 c;

the radial section of the limiting section 1e is larger than that of the inner cavity of the port in the shell 6, the limiting section 1e is limited at the port in the shell 6, and the outer diameter of the first extension section 1f is smaller than that of the limiting section 1 e;

the function is as follows: the chamfer section 1a and the first clamping groove section 1b are used for matching and fixing the spring support 3; the first splicing section 1c is structurally matched with the inner cavity of the shell 6 and used for realizing sealing; the limiting section 1e is used for realizing axial limiting of the joint 1 relative to the shell 6; the first extension section 1f is used for externally connecting an input pipeline.

Preferably, the first splicing section 1c is in threaded connection with the inner cavity of the shell 6.

Specifically, the spring support 3 comprises a support surface 3-1 and at least 3 clamping jaws 3-2 uniformly distributed on the support surface 3-1 in the circumferential direction, and through holes 3-0 are formed between every two adjacent clamping jaws 3-2; the outer diameter of the first clamping groove section 1b is smaller than that of the chamfer section 1a, the end part of the clamping jaw 3-2 is clamped in the first clamping groove section 1b, and a space for arranging the valve core 4 and the spring 5 is reserved between the supporting surface 3-1 and the inner port of the joint 1;

the function is as follows: the chamfer section 1a and the first clamping groove section 1b are used for being matched with each other to clamp the end part of the clamping jaw 3-2 into the first clamping groove section 1b, so that the spring support 3 is fixed at the inner end of the joint 1.

Preferably, 4 clamping jaws 3-2 are uniformly distributed on the supporting surface 3-1 in the circumferential direction;

the function is as follows: making the spring support 3 more stable at the inner end of the joint 1.

Specifically, the casing 6 includes, from inside to outside, a sealing section 6a, a second splicing section 6b, a transition section 6c and a second extension section 6d which are coaxially arranged, inner diameters of the sealing section 6a and the second splicing section 6b are both larger than inner diameters of the transition section 6c and the second extension section 6d, and outer diameters of the sealing section 6a, the second splicing section 6b and the transition section 6c are all larger than an outer diameter of the second extension section 6 d.

Specifically, a sealing ring 2 is arranged between the inner cavity of the sealing section 6a and the second clamping groove section 1 d;

the function is as follows: the sealing ring 2 is used for enhancing the sealing of the joint 1 and the inner cavity of the shell 6.

Specifically, the valve core 4 is integrally of a circular plate structure, and two end faces of the valve core are provided with grooves 4-1;

the function is as follows: the groove 4-1 serves to reduce the volume and self weight of the valve element 4 while satisfying the closing and opening functions of the valve element 4, and serves to install the spring 5.

Specifically, a plurality of convex teeth are arranged on the peripheral surfaces of the first extension section 1f and the second extension section 6d in the circumferential direction;

the function is as follows: the clamping connection with an external pipeline is realized.

Preferably, the first extension 1f and the second extension 6d are both pagoda joints.

Examples

As shown in fig. 1-6, the check valve of the present invention includes a joint 1, a seal ring 2, a spring support 3, a valve core 4, a spring 5, and a housing 6.

When the one-way valve of the utility model is assembled, firstly, the valve core 4 is sequentially clung to the inner port of the joint 1, one end of the spring 5 is arranged in the groove 4-1 of the valve core 4, then the other end of the spring 5 is arranged on the spring support 3, and the clamping jaw 3-2 of the spring support 3 is clamped into the first clamping groove section 1b, so as to fix the spring support 3; secondly, mounting the sealing ring 2 on a second clamping groove section 1d of the joint 1; finally, the housing 6 is screwed and fastened to the inner cavity of the joint 1.

When the one-way valve works, airflow enters from the free end of the joint 1, and when the gas pressure in the inner cavity of the joint 1 is greater than the pretightening force of the spring 5, the gas pushes the valve core 4 to be away from the inner port of the joint 1, so that the one-way valve is opened, and the gas is output from the free end of the shell 6; when the pressure of the gas entering the inner cavity of the joint 1 is smaller than the pretightening force of the spring 5, the valve core 4 is in a static state under the action of the spring force, so that the one-way valve is closed, and the gas cannot enter the free end of the shell 6 through the valve core and is output. The utility model discloses the case 4 whole volume and the dead weight of check valve compare great reduction, arbitrary angle installation with current equipment the utility model discloses a self-weight of its case 4 of check valve is less to the opening pressure and the performance influence of check valve, and case 4 does not have frictional force with the check valve inner chamber, and the check valve wholeness can be stable in the use.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.

In addition, any combination of the various embodiments of the present disclosure can be made, and the same should be considered as the inventive content of the present disclosure, as long as the combination does not depart from the spirit of the present disclosure.

Claims

1. A check valve comprises a connector (1) and a shell (6) which are coaxially arranged and communicated with each other through an inner cavity, wherein one end of the connector (1) is sleeved in the inner cavity of the shell (6) and a space is reserved between the connector (1) and the inner cavity of the shell (6), the inner cavity from the free end of the connector (1) to the free end of the shell (6) is a fluid channel, the check valve is characterized by further comprising a spring support (3) coaxially connected with the inner end of the connector (1), and the spring support (3) is provided with a through hole (3-0) for communicating the inner cavity of the connector (1) with the inner cavity of the shell (6);

the connector is characterized by further comprising a valve core (4) arranged at an inner port of the connector (1), wherein the radial section of the valve core (4) is larger than that of an inner cavity of the inner port of the connector (1), and the connector also comprises a spring (5) coaxially arranged between the spring support (3) and the valve core (4).

2. The check valve according to claim 1, characterized in that the joint (1) comprises, from inside to outside, a chamfer section (1a), a first notch section (1b), a first splicing section (1c), a second notch section (1d), a limiting section (1e) and a first extension section (1f) which are coaxially arranged;

the first splicing section (1c) is matched with an inner cavity structure of the shell (6), and the outer diameters of the chamfer section (1a), the first clamping groove section (1b) and the second clamping groove section (1d) are all smaller than that of the first splicing section (1 c);

the radial section of the limiting section (1e) is larger than the radial section of an inner cavity of the port in the shell (6), the limiting section (1e) is limited at the port in the shell (6), and the outer diameter of the first extension section (1f) is smaller than that of the limiting section (1 e).

3. The check valve according to claim 2, characterized in that the spring support (3) comprises a support surface (3-1) and at least 3 jaws (3-2) uniformly arranged in the circumferential direction of the support surface (3-1), and through holes (3-0) are formed between adjacent jaws (3-2);

the outer diameter of the first clamping groove section (1b) is smaller than that of the chamfer section (1a), the end part of the clamping jaw (3-2) is clamped in the first clamping groove section (1b), and a space for arranging the valve core (4) and the spring (5) is reserved between the supporting surface (3-1) and the inner port of the joint (1).

4. A non-return valve according to claim 3, characterised in that the support surface (3-1) is provided with 4 jaws (3-2) distributed circumferentially.

5. The one-way valve according to claim 3, wherein the housing (6) comprises a sealing section (6a), a second splicing section (6b), a transition section (6c) and a second extension section (6d) which are coaxially arranged from inside to outside, wherein the inner diameters of the sealing section (6a) and the second splicing section (6b) are larger than the inner diameters of the transition section (6c) and the second extension section (6d), and the outer diameters of the sealing section (6a), the second splicing section (6b) and the transition section (6c) are larger than the outer diameter of the second extension section (6 d).

6. The non-return valve according to claim 5, characterised in that a sealing ring (2) is arranged between the inner cavity of the sealing section (6a) and the second groove section (1 d).

7. The check valve according to any of claims 2-6, characterized in that the valve core (4) is a circular plate structure as a whole, and both end faces thereof are provided with grooves (4-1).

8. The check valve according to claim 7, wherein the first extension (1f) is provided with a plurality of teeth on the outer circumferential surface.

9. The check valve according to claim 5, wherein the second extension (6d) is provided with a plurality of teeth on the outer circumferential surface.