CN207864703U - Piston check valve - Google Patents
Piston check valve Download PDFInfo
- Publication number
- CN207864703U CN207864703U CN201820192385.XU CN201820192385U CN207864703U CN 207864703 U CN207864703 U CN 207864703U CN 201820192385 U CN201820192385 U CN 201820192385U CN 207864703 U CN207864703 U CN 207864703U
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- China
- Prior art keywords
- spool
- flap
- spring
- valve body
- utility
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses a kind of piston check valves, including water inlet（1）, water outlet（2）, valve body（3）, spool（5）, it is characterised in that：Columnar valve body cavity internal thread is welded with band water stream channel（7）Cylindrical shape spool, flap（4）For annular closure plate, it is embedded in spool（5）In cavity, spring is equipped in spool chamber body（6）, spring one end is butted on spool upper end, and the other end is then butted on annular flap, and gap is equipped between spool and flap, spring.It is that spool inner wall fixes flap that the utility model, which changes conventional center bar to fix flap, effectively reduces component friction, prolongs the service life.
Description
Technical field
The utility model is related to a kind of check-valves, especially one kind can effectively reducing abrasion, extend valve service life, protect
Demonstrate,prove the piston check valve of sealing effect.
Background technology
Check-valves is indispensable important component in water supply pipe conveying, and the unidirectional of water can be effectively ensured in it
Movement, anti-backflow.But conventional check valves are mostly by spool, valve body, spool fixed plate composition.Spool mentioned here refers to using
Refer to close the closure plate of runner and the center-pole for fixed spool position of the upper end, spool fixed plate mentioned here
For the support plate of nested fixed spool center-pole.When tap water flows back, closure plate on spool by water pressure, in fixed plate
Guiding under vertically move down, valve body runner.Center spool bar is contacted with spool fixed plate always, because long-term lives up and down
It is dynamic, in addition tap water acts on the uneven of strength on spool closure plate when flowing back, cause center spool bar and spool fixed plate long
Phase rubs, and both last gap is more and more wider, so that spool is intermittent or permanent crooked or even stuck, leakage occurs until losing
Go check function.
Utility model content
The purpose of the utility model is to overcome prior art deficiencies, and it is valve to provide one kind to change conventional center bar to fix flap
In-core wall fixes flap, effectively reduces component friction, the piston check valve to prolong the service life.The utility model passes through following
Technical solution is realized：The utility model includes water inlet, water outlet, valve body, spool, which is characterized in that columnar valve body
Intracavitary screw thread is welded with the cylindrical shape spool with water stream channel, and flap is that annular closure plate is embedded in spool chamber body, spool chamber
Interior to be equipped with cylindrical springs, spring one end is butted on spool upper end, and the other end is then butted on annular flap, spool and flap, spring
Between be equipped with gap.
The operation principle of the utility model is that tap water enters valve body by water inlet, and under the effect of the pressure, flap is pushed away
Dynamic to move up, spring is compressed, and tap water enters body cavity, and is flowed out by water outlet.When tap water pressure is inadequate.Flap upper end
Pressure is equal to or more than lower end pressure, and spring-relaxation pushes flap to move down, until flap is contacted with valve body lower end, runner is closed.
Whole process flap moves up and down in the cylinder type environment that spool is constituted, the movement of similar engine piston, because of spool
It is the different concentric column of outer diameter from flap, and flap is wrapped up by spool, spring can freely up and down be transported with flap in spool
It is dynamic, it does not shift so flap is fixed on centre by spool.Gap between flap and spool inner wall is filled by tap water, is obtained
To lubrication, friction is substantially reduced.It is that spool inner wall fixes flap that the utility model, which changes conventional center bar to fix flap, is effectively subtracted
Widget friction, prolongs the service life.From the above, it may be appreciated that the purpose of this utility model can be achieved on.
Description of the drawings
FIG. 1 is a schematic structural view of the utility model；
Fig. 2 is the utility model cylindrical shape spool schematic diagram.
Specific implementation mode
As shown in Figure 1, the utility model includes water inlet 1, water outlet 2, valve body 3, spool 5, which is characterized in that valve body cavity
Lower part is convex circular cavity, columnar valve body cavity internal thread or is welded with the cylindrical shape spool with water stream channel 7, i.e. spool
Upper and lower part is annular solid.It is annular closure plate that, which there are the rounded cylindrical body of water stream channel 7, flap 4 in centre, is embedded in 5 cavity of spool
It is interior, spring 6 is equipped in 5 cavity of spool.5 upper end platform of spool prevents spring 6 from being fallen off by upper end for resisting helical spring 6.
6 lower end of spring is then resisted by the flap of circular plate shape 4, has gap between 5 inner wall of flap 4 and spool.It can be in 5 inner cavity of spool up and down
Activity.When tap water by water inlet 1 into fashionable, push flap 4 to move upwards, open runner, tap water is flowed out by water outlet 2.
When cut off the water or intake pressure it is low cross discharge pressure when, when flap 4 moves downwardly to minimum point.It is contacted with 3 lower face of valve body.To
Valve body runner prevents originally aqueous reflux.
Claims (1)
1. a kind of piston check valve, including water inlet（1）, water outlet（2）, valve body（3）, spool（5）, it is characterised in that：Circle
The valve body cavity internal thread of tubular is welded with band water stream channel（7）Cylindrical shape spool, flap（4）For annular closure plate, it is embedded in
Spool（5）In cavity, spring is equipped in spool chamber body（6）, spring one end is butted on spool upper end, and the other end is then butted on annular flap
On, gap is equipped between spool and flap, spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820192385.XU CN207864703U (en) | 2018-02-05 | 2018-02-05 | Piston check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820192385.XU CN207864703U (en) | 2018-02-05 | 2018-02-05 | Piston check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207864703U true CN207864703U (en) | 2018-09-14 |
Family
ID=63461001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820192385.XU Active CN207864703U (en) | 2018-02-05 | 2018-02-05 | Piston check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207864703U (en) |
-
2018
- 2018-02-05 CN CN201820192385.XU patent/CN207864703U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 637500 jiazigou Road, industrial concentration zone, Jialing District, Nanchong City, Sichuan Province Patentee after: Sichuan Dayu Fluid Technology Co.,Ltd. Address before: 637500 jiazigou Road, industrial concentration zone, Jialing District, Nanchong City, Sichuan Province Patentee before: NANCHONG DAYU WATER TECHNOLOGY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |