CN212986138U

CN212986138U - Accurately-opened one-way valve

Info

Publication number: CN212986138U
Application number: CN202021519795.4U
Authority: CN
Inventors: 刁维龙
Original assignee: Nantong Naco Fluid Equipment Co Ltd
Current assignee: Nantong Naco Fluid Equipment Co Ltd
Priority date: 2020-07-28
Filing date: 2020-07-28
Publication date: 2021-04-16
Anticipated expiration: 2030-07-28

Abstract

The utility model discloses a precise opening one-way valve, which comprises a front valve body, a rear valve body, a fluid inlet and a fluid outlet, wherein the fluid inlet and the fluid outlet are respectively fixed at the central parts of the front valve body and the rear valve body; the rear part of the front valve body is fixedly connected with the front part of the rear valve body through threads; a lifting valve core and a spring are sequentially arranged in the extending direction from the fluid inlet to the fluid outlet; a hose sleeve is circumferentially arranged on the periphery of the front valve body; the hose sleeve is provided with a step which is matched with the convex part and the concave part arranged on the periphery of the front valve body. The utility model discloses effectively solved the check valve minute-pressure smart dress and opened and the heterotypic precision connection's of hose hard tube problem, the check valve opening pressure is very sensitive, and is small, has realized the synchronous assembly test of hose hard tube.

Description

Accurately-opened one-way valve

Technical Field

The utility model belongs to the technical field of the check valve and specifically relates to a check valve is opened to precision.

Background

Fluid can only flow along the water inlet, but the medium at the water outlet can not flow back, and the valve is commonly called a one-way valve. Check valves are also known as check valves or check valves. Are commonly used to prevent reverse flow of oil in hydraulic systems or to prevent reverse flow of compressed air in pneumatic systems. The check valve has hose type check valve and hard tube type check valve, which have respective advantages, and the existing check valve on the market has the defects of single structure and insensitive opening pressure, and generally does not have the special-shaped connection performance of the hose and the hard tube.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: in order to solve the problem that prior art exists, the utility model provides a check valve is opened to precision has solved the problem that check valve minute-pressure precision was opened and the special-shaped precision of hose hard tube is connected.

The technical scheme is as follows: in order to achieve the above purpose, the utility model can adopt the following technical proposal:

a precisely opened one-way valve comprises a front valve body, a rear valve body, a fluid inlet and a fluid outlet, wherein the fluid inlet and the fluid outlet are respectively fixed at the central parts of the front valve body and the rear valve body;

the rear part of the front valve body is fixedly connected with the front part of the rear valve body through threads; a lifting valve core and a spring are sequentially arranged in the extending direction from the fluid inlet to the fluid outlet;

a hose sleeve is circumferentially arranged on the periphery of the front valve body; the hose sleeve is provided with a step which is matched with the convex part and the concave part arranged on the periphery of the front valve body.

Furthermore, the periphery of the rear part of the rear valve body is provided with threads, and the outer part of the threads is provided with nuts matched with the threads; the nut secures the fluid outlet and the rear valve body.

Furthermore, a front clamping sleeve and a rear clamping sleeve are further arranged on the outer circumference of the fluid outlet; the front clamping sleeve is clamped on the inner side of the rear valve body, and the rear clamping sleeve is clamped on the inner side wall of the nut.

Furthermore, the inner side of the hose sleeve is provided with a thread structure, and a gap is arranged between the inner side of the hose sleeve and the outer wall of the front valve body.

Furthermore, an O-shaped sealing ring is arranged at the sealing connection position of the lifting valve core and the front valve body.

Furthermore, the front valve body, the rear valve body, the lifting valve core, the front clamping sleeve, the rear clamping sleeve and the nut are made of SS316 materials.

Furthermore, the spring is made of SS302 material.

Has the advantages that: the utility model has the advantages of it is following:

1) the problems of micro-pressure finish-assembling opening of the one-way valve and special-shaped precise connection of the hose and the hard pipe are effectively solved.

2) The opening pressure is very sensitive, the volume is small, and synchronous assembly and test of the hose and the hard pipe are realized.

Drawings

Fig. 1 is a schematic structural view of the precision opening check valve of the present invention.

Detailed Description

Referring to fig. 1, the utility model discloses a precision opening check valve, which comprises a front valve body 1, a rear valve body 2, a fluid inlet 3 and a fluid outlet 4, wherein the fluid inlet 3 and the fluid outlet 4 are respectively fixed at the central parts of the front valve body 1 and the rear valve body 2;

the rear part of the front valve body 1 is fixedly connected with the front part of the rear valve body 2 through threads; a poppet 5 and a spring 6 are sequentially arranged in the extending direction from the fluid inlet 3 to the fluid outlet 4; and an O-shaped sealing ring 11 is arranged at the sealing connection position of the lifting valve core 5 and the front valve body 1.

A hose sleeve 9 is circumferentially arranged on the periphery of the front valve body 1; the hose sleeve 9 is provided with a step which is matched with a convex part and a concave part which are arranged on the periphery of the front valve body 1.

The periphery of the rear part of the rear valve body 2 is provided with threads, and the outer part of the threads is provided with a nut 10 matched with the threads; the nut 10 fixes the fluid outlet 4 and the rear valve body 2; a front clamping sleeve 8 and a rear clamping sleeve 7 are further arranged on the outer circumference of the fluid outlet 4; the front clamping sleeve 8 is clamped on the inner side of the rear valve body 2, and the rear clamping sleeve 7 is clamped on the inner side wall of the nut 10; the hose sleeve 9 is provided with a thread structure on the inner side and a gap is arranged between the hose sleeve and the outer wall of the front valve body 1.

The front valve body 1, the rear valve body 2, the poppet 5, the front ferrule 8, the rear ferrule 7 and the nut 10 are all made of SS316 materials; the spring 6 is made of SS 302.

The working process is as follows:

the utility model relates to a precise opening one-way valve, which comprises a front valve body 1, a rear valve body 2, a fluid inlet 3 and a fluid outlet 4, wherein the fluid inlet 3 and the fluid outlet 4 are respectively fixed at the central parts of the front valve body 1 and the rear valve body 2; in operation, the air flow is allowed to pass in one direction only, and is completely closed in the opposite direction; after the air pressure is added into the fluid inlet 3, the air pressure acting on the poppet 5 overcomes the spring force and the friction force of the spring 6 to open the poppet 5, and the air inlet and the air outlet are communicated. The gas flow is directed to the fluid outlet 4. If air pressure is added to the fluid outlet 4, the air inlet and outlet are not communicated, i.e. the air flow cannot flow reversely.

A hose sleeve 9 is arranged on the periphery of the front valve body 1 in the circumferential direction; the hose sleeve 9 is provided with a step which is matched with a convex part and a concave part which are arranged on the periphery of the front valve body 1. The inner side of the hose sleeve 9 is provided with a thread structure, and a gap is formed between the hose sleeve and the outer wall of the front valve body 1; thereby realizing the simultaneous connection of the hose and the hard pipe. In addition, the accurate position setting and the setting of material of inside lift valve core 5, preceding cutting ferrule 8, back cutting ferrule 7, nut 10 of accurate opening check valve and O type sealing washer 11 have realized that 1/2 PSI's that the customer required minute pressure is accurate to be opened, and opening pressure is very sensitive.

Claims

1. A precisely-opened one-way valve is characterized by comprising a front valve body (1), a rear valve body (2), a fluid inlet (3) and a fluid outlet (4) which are respectively fixed at the central parts of the front valve body (1) and the rear valve body (2);

the rear part of the front valve body (1) is fixedly connected with the front part of the rear valve body (2) through threads; a poppet (5) and a spring (6) are sequentially arranged in the extending direction from the fluid inlet (3) to the fluid outlet (4);

a hose sleeve (9) is circumferentially arranged on the periphery of the front valve body (1); the hose sleeve (9) is provided with a step matched with the convex part and the concave part which are arranged on the periphery of the front valve body (1).

2. The precision opening check valve of claim 1, wherein: the periphery of the rear part of the rear valve body (2) is provided with threads, and the outer part of the threads is provided with a nut (10) matched with the threads; the nut (10) fixes the fluid outlet (4) and the rear valve body (2).

3. The precision opening check valve of claim 2, wherein: a front clamping sleeve (8) and a rear clamping sleeve (7) are further arranged on the outer circumference of the fluid outlet (4); the front clamping sleeve (8) is clamped on the inner side of the rear valve body (2), and the rear clamping sleeve (7) is clamped on the inner side wall of the nut (10).

4. The precision opening check valve of claim 1, wherein: the inner side of the hose sleeve (9) is provided with a thread structure, and a gap is arranged between the inner side of the hose sleeve and the outer wall of the front valve body (1).

5. The precision opening check valve of claim 1, wherein: an O-shaped sealing ring (11) is arranged at the sealing connection position of the lifting valve core (5) and the front valve body (1).

6. The precision opening check valve of claim 1, wherein: the front valve body (1), the rear valve body (2), the lifting valve core (5), the front clamping sleeve (8), the rear clamping sleeve (7) and the nut (10) are all made of SS316 materials.

7. The precision opening check valve of claim 1, wherein: the spring (6) is made of SS302 materials.