CN201407393Y

CN201407393Y - Check valve

Info

Publication number: CN201407393Y
Application number: CN2009201171331U
Authority: CN
Inventors: 周水根
Original assignee: Zhejiang Hongsen Machinery Co Ltd
Current assignee: Zhejiang Hongsen Machinery Co Ltd
Priority date: 2009-04-02
Filing date: 2009-04-02
Publication date: 2010-02-17
Anticipated expiration: 2019-04-02

Abstract

The utility model discloses a check valve, which comprises a tubular valve body with a fluid inlet and a fluid outlet; the valve body is internally provided with a valve core which is used for sealingthe fluid inlet; the fluid outlet of the valve body is provided with a joint with a plurality of water-crossing holes; the one side of the joint, facing towards the fluid inlet, is provided with a fixed part; the outside of the fixed part is sheathed by a spring so as to apply a push force to the valve core in the direction facing towards the fluid inlet; and the valve core seals the end of the valve body in the inlet direction under the elasticity of the spring under a natural state. The check valve of the joint of the water-crossing hole provides an axial fluid passage, and can be directlyconnected with the pipeline when the check valve is arranged, the structure is firm and the installation is simple. A sealing washer is arranged at a part at which the valve core and the internal wallof the valve body of the check valve are matched and sealed so that the check valve has good sealing performance and convenient control.

Description

A kind of one-way valve

Technical field

The utility model relates to valve and makes the field, relates in particular to a kind of one-way valve.

Background technique

Existing one-way valve generally comprises the spool of valve body, motion sealed valve body, spool is withstood the supporting portion or the elastic member of sealed valve body.Existing one-way valve structures is more complicated mostly, simple in structure realize with spoke structure or iron wire as supporting portion or elastic member but have defective on fastness, and is damaged easily or difficulty is installed.

China's utility model patent numbers 200720147492.2 discloses a kind of one-way valve, comprise that the spool of valve pipe, valve seat, the described valve pipe of movable sealing stream and the end face by the described spool of butt limit the block piece that it moves axially the position, described block piece is a baffle ring, it comprises body and convex tendon, described convex tendon is located at the end towards described spool of described baffle ring, is used for the described end face of the described spool of butt.The certain difficulty of the fixedly existence of its block piece self-position of the one-way valve of this kind structure and show somewhat thin.

Summary of the invention

The utility model provides a kind of sound construction, one-way valve that unidirectional obturation effect is good.

A kind of one-way valve, comprise the tubular valve body that has the fluid inlet/outlet, be provided with the spool that is used for the sealing fluid import in the valve body, the fluid outlet of described valve body is provided with the joint with some water passage holes, joint has fixed component towards a side of fluid inlet, the fixed component outside is with spring and is used for spool is applied thrust towards the fluid inlet direction, the nature spool be subjected to spring force with the valve body importer to the end sealing.

Described joint comprises that the described fixed component that is used for tubular part, the chassis of fixedlying connected with the tubular part inwall that is connected with valve body fluid outlet end tube wall and is fixed on the chassis constitutes.The relative spool of joint is a block piece, also finished simultaneously and crossed water function, and sound construction.Valve body is opened when valve body inner fluid or gas pressure overcome the spring force that spool is subjected to.

A water passage hole solderless wrapped connection axis is evenly distributed on the described chassis, optimizes the performance of aspects such as the whole counterweigh of one-way valve.

Described tubular part welds with valve body fluid outlet end tube wall or is threaded, and also can adopt other modes to connect.Described fixed component is tubular or column, and this fixed component cooperates spool, to the spool positioning and guiding.When fixed component was tubular, an end of spool was inserted in the tube, spool to-and-fro motion under the qualification of fixed component inwall; When fixed component was column, an end of spool was a sleeve shape, and was enclosed within column fixed component outside, spool to-and-fro motion under the qualification of fixed component outer wall.

The position of described spool and valve interior wall fitted seal is provided with gasket seal, gasket seal is fixedly connected on the spool by a clamping piece, clamping piece is connected on the spool by screw or interference fit or riveted fixing, and gasket seal contacts with valve body strengthens obturation effect.

The inwall of the fluid outlet of described valve body has ring-shaped valve seats, spool and ring-shaped valve seats contact seal during closed check valve.

The one-way valve that the utility model has the joint of water passage hole provides an axial fluid passage, can directly be connected with pipeline when one-way valve is installed, and sound construction, installation are simply.The position of the spool of one-way valve and valve interior wall fitted seal is provided with gasket seal, makes the good seal performance of one-way valve, is convenient to control.

Description of drawings

Fig. 1 is the structural representation of the utility model one-way valve;

Fig. 2 is the structural representation of the joint of the utility model one-way valve.

Embodiment

As shown in Figure 1, the utility model one-way valve, comprise the tubular valve body 3 that has the fluid inlet/outlet, be provided with the spool 4 that is used for the sealing fluid import in the valve body 3, the fluid outlet of valve body 3 is provided with the joint 6 with some water passage holes 1, joint 6 has fixed component 12 towards a side of fluid inlet, and the fixed component outside is with spring 5 and is used for spool 4 is applied thrust towards the fluid inlet direction, nature spool 4 be subjected to spring 5 elastic force with valve body 3 importers to the end sealing.

As shown in Figure 2, joint 6 comprises that the fixed component 12 that is used for tubular part 9, the chassis 10 of fixedlying connected with tubular part 9 inwalls that is connected with valve body 3 fluid outlet tube walls and is fixed on the chassis 10 constitutes.Water passage hole 1 solderless wrapped connection 6 axis are evenly distributed on the chassis 10, and the relative spool of joint is a block piece, and also finished simultaneously and crossed water function, and sound construction.Valve body is opened when valve body inner fluid or gas pressure overcome the spring force that spool is subjected to.

Tubular part 9 is threaded with valve body 3 fluid outlet tube walls, and fixed component 12 is a tubular, and an end of spool 4 is inserted in the tube, spool 4 to-and-fro motion under the qualification of fixed component 12 inwalls.

Spool 4 is provided with gasket seal 8 with the position of valve body 3 inwall fitted seal, and gasket seal 8 is fixedly connected on the spool 4 by a clamping piece 7, and clamping piece 7 is fixedly connected on the spool 4 by interference fit.

The inwall of the fluid outlet of valve body 3 has ring-shaped valve seats 11, spool 4 and ring-shaped valve seats 11 contact seals during closed check valve.

When being installed, one-way valve can as required one-way valve be connected with exterior line 2.

The utility model one-way valve is sealed valve body 3 importers by spring 5 elastic force to end at nature spool 4, when current enter valve body 3, the pressure to spool 4 of current makes it overcome spring 5 elastic force, spool 4 is to the fluid output direction motion of valve body 3, current enter valve body 3 inner chambers by the slit of 4 of ring-shaped valve seats 11 and spools like this, discharge by the water passage hole on the joint 61 again, when water flow pressure reduces or current when stopping to flow, the elastic reset that spool 4 is subjected to spring 5 seals the fluid inlet of valve body 3.

Claims

1, a kind of one-way valve, comprise the tubular valve body (3) that has the fluid inlet/outlet, be provided with the spool (4) that is used for the sealing fluid import in the valve body (3), it is characterized in that, the fluid outlet of described valve body (3) is provided with the joint (6) with some water passage holes (1), joint (6) has fixed component (12) towards a side of fluid inlet, and fixed component (12) outside is with spring (5) and is used for spool (4) is applied thrust towards the fluid inlet direction.

2, one-way valve as claimed in claim 1, it is characterized in that described joint (6) comprises that the described fixed component (12) that is used for tubular part (9), the chassis (10) of fixedlying connected with tubular part (9) inwall that is connected with valve body (3) fluid outlet tube wall and is fixed on the chassis (10) constitutes.

3, one-way valve as claimed in claim 2 is characterized in that, described water passage hole (1) solderless wrapped connection head (6) axis is evenly distributed on the chassis (10).

4, one-way valve as claimed in claim 2 is characterized in that, described tubular part (9) welds with valve body (3) fluid outlet tube wall or is threaded.

5, one-way valve as claimed in claim 1 is characterized in that, described fixed component (12) is a tubular, and an end of spool (4) is inserted in the tube, spool (4) to-and-fro motion under the qualification of fixed component (12) inwall.

6, one-way valve as claimed in claim 1 is characterized in that, described fixed component (12) is a column, and an end of spool (4) is a sleeve shape, and is enclosed within column fixed component (12) outside, spool (4) to-and-fro motion under the qualification of fixed component outer wall.

7, one-way valve as claimed in claim 1 is characterized in that, described spool (4) is provided with gasket seal (8) with the position of valve body (3) inwall fitted seal.

8, one-way valve as claimed in claim 7 is characterized in that, described gasket seal (8) is fixedly connected on the spool (4) by a clamping piece (7).

9, one-way valve as claimed in claim 8 is characterized in that, described clamping piece (7) is connected on the spool (4) by screw or interference fit or riveted fixing.

10, one-way valve as claimed in claim 7 is characterized in that, the inwall of the fluid outlet of described valve body (3) has ring-shaped valve seats (11), spool during closed check valve (4) and ring-shaped valve seats (11) contact seal.