CN203892633U - Piston type check valve - Google Patents
Piston type check valve Download PDFInfo
- Publication number
- CN203892633U CN203892633U CN201420344150.XU CN201420344150U CN203892633U CN 203892633 U CN203892633 U CN 203892633U CN 201420344150 U CN201420344150 U CN 201420344150U CN 203892633 U CN203892633 U CN 203892633U
- Authority
- CN
- China
- Prior art keywords
- piston
- valve
- close
- spring
- logical
- 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.)
- Expired - Fee Related
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- Check Valves (AREA)
- Details Of Valves (AREA)
Abstract
A piston type check valve is composed of a valve body, a valve seat, a piston, a spring, an exhaust valve, piston rings and a bypass piston tube. The bypass piston tube is arranged on the valve body, the valve body and the bypass piston tube are of an integrated structure, the center line of a flow channel of the valve body is perpendicular to the center line of the bypass piston tube, and an air hole is formed in the side edge of the bottom of the bypass piston tube and communicated with the flow channel of an inner cavity of the valve body. The valve seat, the piston and the spring are arranged in the bypass piston tube, the valve seat is arranged at the junction between the flow channel of the valve body and the bypass piston tube, the piston is located above the valve seat, the spring is located above the valve seat, one end of the spring is connected with the inner wall of a valve deck, and the other end of the spring is connected with the exhaust valve in the piston. The piston is divided into an upper end and a lower end and is in the shape of a dumbbell with the two ends large and the middle small, a groove is formed in the top end of the upper end of the piston, the exhaust valve and a bolt are arranged in the groove, and an exhaust hole of the exhaust valve is communicated with the air hole in the side edge of the bottom of the bypass piston tube. Two annular grooves are formed in the periphery of the upper end of the piston, and one piston ring is arranged in each of the two annular grooves. The piston type check valve is simple in structure and stable in system.
Description
Technical field
The utility model relates to a kind of valve, particularly a kind of piston check valve, and MEDIA FLOW is out-of-date, relies on medium itself to flow and automatic open and close piston is realized system stability.
Background technique
Safety check is a kind of automatic valve, and its Main Function is to prevent that medium from flowing backwards, preventing the reversion of pump and drive motor, and the releasing of vessel media, and refers to rely on medium itself to flow and automatic open and close flap.And existing safety check is in service not steady in work, piston activity causes whole system vibrations large fast, and noise is large, and product easily damages.
Summary of the invention
The deficiency existing for prior art, the purpose of this utility model is to provide a kind of piston check valve, by valve body, valve seat, piston, spring, outlet valve, piston ring, be close to logical piston tube and form.
The utility model solves the technological scheme that its technical problem adopts: valve body is flange arrangement, valve body is provided with and is close to logical piston tube, valve body is integral type structure with being close to logical piston tube, valve flowing channel center line is with to be close to logical piston tube center line vertical, be close to logical piston tube bottom side a pore is set, pore communicates with body cavity runner; Be close in logical piston tube and be provided with valve seat, piston, spring, valve seat is arranged on valve flowing channel and is close to logical piston tube intersection, and piston is positioned at valve seat top, and spring is positioned at valve seat top, and spring one end connects valve gap inwall, and the spring the other end connects the outlet valve in piston; Piston is divided into top and following, and piston is the dumbbell shape of being small at both ends and big in the middle, and piston top top is provided with groove, is provided with outlet valve and bolt in groove, and the exhaust port of outlet valve communicates with being close to logical piston tube bottom side pore, bolt fixing spring; Piston top periphery is provided with two road annular grooves, in two road annular grooves, is equipped with piston ring, and piston ring forms slipper seal to being close to logical piston tube.
The utility model beneficial effect: simple in structure, piston relies on medium itself to flow and automatically opens fast, closes at a slow speed, system stability, without wearing and tearing, without impacting, long service life.
Brief description of the drawings
Fig. 1 is the utility model overall structure schematic diagram;
Fig. 2 is valve flap structure schematic diagram;
Fig. 3, for being close to logical piston tube structural representation;
In figure, 1, valve body, 2, valve seat, 3, piston, 4, outlet valve, 5, piston ring, 6, spring, 7, be close to logical piston tube.
Embodiment
As shown in drawings, the utility model comprises valve body 1, valve seat 2, piston 3, outlet valve 4, piston ring 5, spring 6, is close to logical piston tube 7, valve body 1 is flange arrangement, valve body 1 is provided with circle and is close to logical piston tube 7, valve body 1 is integral type structure with being close to logical piston tube 7, valve body 1 runner center line, with to be close to logical piston tube 7 center lines vertical, be close to logical piston tube 7 bottom sides a pore is set, and pore communicates with valve body 1 inner chamber runner; Be close in logical piston tube 7 and be provided with valve seat 2, piston 3, spring 6, valve seat 2 is arranged on valve body 1 runner and is close to logical piston tube 7 intersections, piston 3 is positioned at valve seat 2 tops, spring 6 is positioned at valve seat 2 tops, spring 6 one end connect valve gap inwall, spring 6 the other ends connect the outlet valve 4 in piston 3, are close to 7 mouthfuls of logical piston tube and above fix valve gap with bolt; Piston 3 is divided into top and following, and piston is the dumbbell shape of being small at both ends and big in the middle, and piston 3 top tops are provided with groove, are provided with outlet valve 4 and bolt in groove, and the exhaust port of outlet valve 4 communicates with being close to logical piston tube 7 bottom side pores, bolt 5 fixing springs 6; Piston 3 top peripheries are provided with two road annular grooves, in two road annular grooves, are equipped with piston ring 5, and piston ring 5 forms slipper seal to being close to logical piston tube 7; Piston 3 automatically produces piston movement and open and close under the mobilization of medium own, and piston 3 followings and valve seat 2 form cut-off sealing configuration; Medium flows to a direction, produces pressure and pushes piston 3 to, and piston 3 moves upward and presses to spring 6, and outlet valve 4 is opened fast under medium and spring 6 effects, and the air pressure that makes to be close in logical piston tube 7 flows out from the exhaust port of outlet valve 4; While stopping media flow, gas in pipelines refluxes, and the return action of spring 6, self-gravity action by spring 4 and piston 3 forms sealing and prevents that medium from flowing backwards in valve seat 2, formation is closed at a slow speed, so that piston 3 forms without wearing and tearing, without impacting being close to logical piston tube 7, form that whole system is shockproof, noise free and stable operation.
Claims (6)
1. a piston check valve, by valve body, valve seat, piston, spring, outlet valve, piston ring, be close to logical piston tube and form, it is characterized in that: valve body is flange arrangement, valve body is provided with and is close to logical piston tube, be close to logical piston tube bottom side a pore is set, pore communicates with body cavity runner; Be close in logical piston tube and be provided with valve seat, piston, spring, valve seat is arranged on valve flowing channel and is close to logical piston tube intersection, and piston is positioned at valve seat top, and spring is positioned at valve seat top; Piston is divided into top and following, and piston top top is provided with groove, is provided with outlet valve and bolt in groove; Piston top periphery is provided with two road annular grooves, in two road annular grooves, is equipped with piston ring.
2. a kind of piston check valve according to claim 1, is characterized in that: described valve body is integral type structure with being close to logical piston tube, valve flowing channel center line be close to that to lead to piston tube center line vertical.
3. a kind of piston check valve according to claim 1, is characterized in that: described spring one end connects valve gap inwall, and the spring the other end connects the outlet valve in piston.
4. a kind of piston check valve according to claim 1, is characterized in that: described piston is the dumbbell shape of being small at both ends and big in the middle.
5. a kind of piston check valve according to claim 1, is characterized in that: the exhaust port of described outlet valve be close to logical piston tube bottom side pore and communicate.
6. a kind of piston check valve according to claim 1, is characterized in that: described piston ring forms slipper seal to being close to logical piston tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420344150.XU CN203892633U (en) | 2014-06-18 | 2014-06-18 | Piston type check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420344150.XU CN203892633U (en) | 2014-06-18 | 2014-06-18 | Piston type check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203892633U true CN203892633U (en) | 2014-10-22 |
Family
ID=51719038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420344150.XU Expired - Fee Related CN203892633U (en) | 2014-06-18 | 2014-06-18 | Piston type check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203892633U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108067384A (en) * | 2018-01-30 | 2018-05-25 | 江苏中矿大正表面工程技术有限公司 | A kind of separate type material feeds frock |
-
2014
- 2014-06-18 CN CN201420344150.XU patent/CN203892633U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108067384A (en) * | 2018-01-30 | 2018-05-25 | 江苏中矿大正表面工程技术有限公司 | A kind of separate type material feeds frock |
| CN108067384B (en) * | 2018-01-30 | 2023-08-29 | 江苏中矿大正表面工程技术有限公司 | Disconnect-type material supply frock |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141022 Termination date: 20150618 |
|
| EXPY | Termination of patent right or utility model |