CN205956465U

CN205956465U - Check valve

Info

Publication number: CN205956465U
Application number: CN201620992445.7U
Authority: CN
Inventors: 田洪卫
Original assignee: SUZHOU KEDI FLUID CONTROL EQUIPMENT CO Ltd
Current assignee: SUZHOU KEDI FLUID CONTROL EQUIPMENT CO Ltd
Priority date: 2016-08-30
Filing date: 2016-08-30
Publication date: 2017-02-15
Anticipated expiration: 2026-08-30

Abstract

The utility model provides a check valve, includes the valve body, non return board and the mobile pipeline that is ended, the non return board can remove in the primary importance and the second place under the liquid flow effort through the roller of connecting on the valve body, when this non return board during at the primary importance, the pipeline that flows is opened, when this non return board is in the second place, the pipeline that flows is intake one end and is ended, still including connecting the elastic component on the valve body, elastic component includes casing, piston assembly and elastic component, piston assembly can remove between the primary importance and the second place, the utility model provides an improved check valve through the improvement of structure, has solved above -mentioned problem, and it can realize the non return effect fast.

Description

A kind of check-valves

Technical field

This utility model is related to a kind of check-valves.

Background technology

Check-valves refer to rely on medium itself to flow and automatic open and close flap, for preventing the valve of medium refluence, also known as Non-return valve, check valve, reflux valve and counterbalance valve.Check-valves belong to a kind of automatic valve, and its Main Function is to prevent medium from falling Stream, prevent pump and drive motor reversion, and the releasing of vessel media.

The check valve structure being usually used be usually when valve block or check plate are opened by water pump hydraulic pressure automatically push valve open, Valve block or check plate is made to open, then after water pump cuts out, check plate self gravitation and coupled transhipment component require it Return to origin-location, i.e. closed mode.Then, there is following drawback in this non-return structure：

After being closed due to water pump, in pipeline, water or tank water can impact back plate face or valve block as inertia is repeated multiple times, Cause significant wear to check plate or valve block, cause non-return valve block or non-return plate face quick under hydraulic pressure or under countercurrent pressure Start or open and close.

Utility model content

This utility model provides a kind of improved check-valves, by the improvement of structure, solves the problems referred to above, it can Quickly realize non-return effect.

Under the technical solution of the utility model thing：

A kind of check-valves, including valve body, check plate and the flow duct being cut off, described check plate is by being connected to valve Roller on body can move in primary importance and the second position under liquid flow dynamic deformation from motion, when this check plate is in first When putting, described flow duct is opened, and when this check plate is in the second position, described flow duct one end is cut off, and it is special Levy and be, also include the elastic partss being connected on valve body, described elastic partss include housing, piston component and elastic component, institute State piston component can move between the first position and the second position；

When described piston component is in primary importance, described elastic component compressed and resist liquid flowing pressure pass through should Piston component is at described primary importance to check plate pressure；

When described piston component is in the second position, this elasticity tension is simultaneously passed through piston by described elastic component release tension force Assembly imposes on check plate away from primary importance, enables check plate to move to the described second position.

Preferably, described piston set assembly includes piston push rod and piston, and described piston is resisted with elastic component elasticity.

Preferably, described piston push rod can be axially moveable between the first position and the second position.

Preferably, described flow duct bottom is provided with the stopper section matching with check plate.

Preferably, when check plate is in the second position, described check plate is contacted with described stopper section.

Preferably, described elastic component is spring.

Beneficial effect：This utility model passes through to arrange elastic partss and piston component, so that check plate is moved rapidly, and Pressure balance can be kept, do not affected by back pressure impact.

Brief description

Fig. 1 is that this utility model check plate is in primary importance view.

Fig. 2 is that this utility model check plate is in second position view.

Specific embodiment

With specific embodiment, this utility model is described in detail below in conjunction with the accompanying drawings.

As illustrated in fig. 1 and 2, a kind of check-valves 1, including valve body 2, check plate 3 and the flow duct 4 being cut off, flowing It is liquid-inlet end on the left of pipeline, right side is liquid outlet end, as seen from the figure, when check plate 3 is by fluid flow pressure undershoot Open, flow duct connect make entrance point and the port of export together with；Check plate 3 can be in liquid by the roller 31 being connected on valve body Move between primary importance A and second position B under body mobilization power, when this check plate 3 is in primary importance A, described Flow duct 4 is connected, and when this check plate 3 is in second position B, described flow duct entrance point is cut off, this check-valves Structure is additionally provided with the elastic partss 5 being connected on valve body, and described elastic partss 5 include housing 51, piston component 52 and elastic component 53, described piston component 52 can move between primary importance A and second position B；

When described piston component 52 is in primary importance A, described elastic component 53 is compressed and resists liquid flowing pressure It is in described primary importance A to check plate 3 pressure by this piston component 52；

When described piston component 52 is in second position B, this elasticity tension is simultaneously led to by described elastic component 53 release tension force Cross piston component 52 and impose on check plate 3 away from primary importance A, and drive check plate 3 can move to the described second position B.

In the present embodiment, described piston component 52 includes piston push rod 520 and piston 521, described piston 521 and elasticity Part 53 elasticity resists.Now, elastic component is among the cavity being surrounded by piston 521 and housing 51.

In the present embodiment, described piston push rod 520 can be axially moveable between primary importance A and second position B.

In the present embodiment, described flow duct 4 bottom is provided with the stopper section 41 matching with check plate 3.

In the present embodiment, when check plate 3 is in second position B, described check plate 3 is contacted with described stopper section 41.

In the present embodiment, described elastic component 53 is spring.

Above description is with reference to further illustrating that specific embodiment and accompanying drawing are done to this utility model.But, this Utility model obviously can be implemented different from other methods that this describes with multiple, those skilled in the art can without prejudice to Carry out promoting, deduce according to actually used situation in the case of this utility model content, therefore, the content of above-mentioned specific embodiment The protection domain of this utility model determination should not limited.

Claims

1. a kind of check-valves, including valve body, check plate and the flow duct being cut off, described check plate is by being connected to valve body On roller can move in primary importance and the second position under liquid flow dynamic deformation from motion, when this check plate is in primary importance When, described flow duct is opened, and when this check plate is in the second position, described flow duct one end is cut off, its feature It is, also include the elastic partss being connected on valve body, described elastic partss include housing, piston component and elastic component, described Piston component can move between the first position and the second position；

When described piston component is in primary importance, described elastic component compressed and resist liquid flowing pressure pass through this piston Assembly is at described primary importance to check plate pressure；

When described piston component is in the second position, this elasticity tension is simultaneously passed through piston component by described elastic component release tension force Impose on check plate away from primary importance, enable check plate to move to the described second position.

2. a kind of check-valves according to claim 1 are it is characterised in that described piston component includes piston push rod and work Plug, described piston is resisted with elastic component elasticity and is connected.

3. a kind of check-valves according to claim 2 are it is characterised in that described piston push rod can be in primary importance and It is axially moveable between two positions.

4. a kind of check-valves according to claim 1 are it is characterised in that described flow duct bottom is provided with and check plate phase The stopper section of coupling.

5. a kind of check-valves according to claim 4 are it is characterised in that when check plate is in the second position, described only Return plate to contact with described stopper section.

6. a kind of check-valves according to claim 1 are it is characterised in that described elastic component is spring.