CN207989822U - Check-valves for gas piping - Google Patents
Check-valves for gas piping Download PDFInfo
- Publication number
- CN207989822U CN207989822U CN201820133660.0U CN201820133660U CN207989822U CN 207989822 U CN207989822 U CN 207989822U CN 201820133660 U CN201820133660 U CN 201820133660U CN 207989822 U CN207989822 U CN 207989822U
- Authority
- CN
- China
- Prior art keywords
- gasket
- opening
- valve
- valve body
- outer cover
- 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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- Valve Housings (AREA)
- Check Valves (AREA)
Abstract
The utility model discloses a kind of check-valves for gas piping, including valve body, outer cover, inner cover, the first gasket, the second gasket and plug combination, valve body have upward first opening, second opening and concentric inlet channel, outlet passageway, first opening and second opening be equipped with outer cover；Plug combination includes valve head, valve rod, spring, casing and fixed link, and the first gasket is socketed on valve rod, and the medial surface of the first gasket has inner sunken face；The lower end of fixed link is connected on the side wall of valve body, the upper end connecting sleeve of fixed link, and the both ends of spring are connected on the end face of valve rod and fixed link and spring is placed in casing；It is inside covered on the lower section of outer cover, and is connect with the second gasket, the top and bottom of the second gasket all have inner sunken face.The utility model realizes two seals by the first gasket and the second gasket, to cut off all reflux, to ensure safety when flowing back, and persistently removes outer cover and repair and maintenance can be realized, be convenient.
Description
Technical field
The utility model belongs to valve technology field, more particularly to a kind of check-valves for gas piping.
Background technology
Check-valves refers to being flowed and automatic open and close flap by medium itself, for the valve for preventing medium from flowing backwards, also known as
Non-return valve, check valve, reflux valve and counterbalance valve.Check-valves belongs to a kind of automatic valve, and main function is to prevent
Medium is flow backwards, and is equipped with lever or chain link in existing check-valves, is easy to happen mechanical breakdown, and need integral demounting ability
Repair and maintenance is very inconvenient.
Utility model content
For the technical problems in the prior art, the utility model provides a kind of check-valves for gas piping.
In order to solve the above technical problems, the technical solution adopted in the utility model is：
A kind of check-valves for gas piping, including valve body, outer cover, inner cover, the first gasket, the second gasket and stick harness group
Part, the valve body have upward first opening, second opening and concentric inlet channel, outlet passageway, described first
The end face of opening and the second opening is equipped with the outer cover, and the inlet channel and outlet passageway are respectively arranged on the phase of the valve body
To both sides, and respectively with it is described first opening and the second open communication；The plug combination includes valve head, valve rod, spring, casing
And fixed link, the valve head and valve-stem integrated molding, and the vertical section across of the valve head, outer ledge are equipped with slope
To be overlapped in first opening, the card slot of annular is offered on the inner wall of first opening, is socketed on the valve rod
First gasket, the medial surface of first gasket have an inner sunken face, and the medial surface edge of first gasket has and is used for
The horizontal plane being overlapped on the horizontal cell wall of the card slot；The lower end of the fixed link is connected on the side wall of the valve body, institute
The upper end for stating fixed link is equipped with external screw thread, and to connect described sleeve pipe, the both ends of the spring are connected to the valve rod and consolidate
On the end face of fixed pole and the spring is placed in described sleeve pipe；The lower section of outer cover is covered in described, the inner cover is arch, and
It is connect with second gasket, the top and bottom of second gasket all have inner sunken face；Positioned at the first opening week
The upper surface of the valve body enclosed has outer convex globoidal with the valve head top surface nature transition, with in second gasket
Concave curved surface is bonded.
Preferably, the outlet passageway of second opening lower section has inclined side wall outward.
Preferably, the outer cover is connect by bolts and nuts with valve body.
Compared with prior art, advantageous effect possessed by the utility model is：The utility model by the first gasket and
Second gasket realizes two seals, and to cut off all reflux, to ensure safety when flowing back, and persistently removing outer cover can be real
Existing repair and maintenance, is convenient.
Description of the drawings
Fig. 1 is the schematic cross-sectional view of the check-valves for gas piping in the utility model.
In figure：1- valve bodies；11- first is open；12- second is open；13- inlet channels；14- outlet passageways；15- card slots；
2- outer covers；3- inner covers；The first gaskets of 4-；The second gaskets of 5-；51- fore-sets；6- valve heads；7- valve rods, 8- springs；
9- casings；10- fixed links.
Specific implementation mode
So that those skilled in the art is better understood from the technical solution of the utility model, below in conjunction with the accompanying drawings and is embodied
Example elaborates to the utility model.
As shown in Figure 1, the embodiments of the present invention disclose a kind of check-valves for gas piping, including valve body 1,
There is the first opening 11, second upward to open for outer cover 2, inner cover 3, the first gasket 4, the second gasket 5 and plug combination, valve body 1
The end face of mouth 12 and concentric inlet channel 13, outlet passageway 14, the first opening 11 and the second opening 12 is equipped with outer cover 2,
Outer cover 2 is connect by screw bolt and nut with valve body 1, with capping the first opening 11 and the second opening 12, inlet channel 13 and outlet
Channel 14 is respectively arranged on the opposite sides of valve body 1, and is connected to respectively with the first opening 11 and the second opening 12.Plug combination includes
Valve head 6, valve rod 7, spring 8, casing 9 and fixed link 10, valve head 6 and valve rod 7 are integrally formed, and the vertical section of valve head 6 is at cross
Shape, outer ledge are equipped with slope to be overlapped at the first opening 11, the card slot of annular are offered on the inner wall of the first opening 11
15, the medial surface edge of the first gasket 4 has the horizontal plane for being overlapped on the horizontal cell wall of card slot 15；Fixed link 10
Lower end is connected on the side wall of valve body 1, and the upper end of fixed link 10 is equipped with external screw thread, and with connecting sleeve 9, the both ends of spring 8 are distinguished
It is connected on the end face of valve rod 7 and fixed link 10 and spring 8 is placed in casing 9；The first gasket 4, the first pad are socketed on valve rod 7
The medial surface of piece 4 has inner sunken face, convenient for aggregation gas so that the first gasket of gas head cover 4, the first gasket 4 drive valve head 6
It is moved up with valve rod 7, gas is made to pass sequentially through the chamber between the first opening 11, the second gasket 5 and inner cover 3, inner cover 3 and outer cover 2
Between chamber, second opening 12 enter outlet passageways 14.
Inner cover 3 is set to the lower section of outer cover 2, and inner cover 3 and outer cover 2 are arch, and inner cover 3 is connect with the second gasket 5, and are led to
It crosses the second gasket 5 and nuts and bolt is connected on valve body 1.The top and bottom of second gasket 5 all have inner sunken face, are located at
The upper surface of valve body 1 around first opening 11 has outer convex globoidal with the top surface nature transition of valve head 6, with the second gasket
5 inner sunken face fitting.The top surface setting inner sunken face of second gasket 5 is convenient for increasing the pressure of the second gasket of reflux gas pair 5,
The bottom surface of the second gasket 5 is set tightly to touch the outer convex globoidal of valve body 1 and valve head.
In the present embodiment, the outlet passageway 14 of 12 lower section of the second opening has inclined side wall outward, to increase gas
Volume, reduce flow velocity, be conducive to the return pressure in the unit interval.
In the present embodiment, the edge of the top surface of the second gasket 5 is equipped with multiple fore-sets 51 for surrounding annular, can prevent in this way
The second gasket 5 and inner cover 3 is bonded when overcurrent.
Above example is only the exemplary embodiment of the utility model, is not used in limitation the utility model, this practicality is new
The protection domain of type is defined by the claims.Those skilled in the art can be in the essence and protection domain of the utility model
It is interior, various modifications or equivalent replacements are made to the utility model, this modification or equivalent replacement also should be regarded as falling new in this practicality
In the protection domain of type.
Claims (4)
1. a kind of check-valves for gas piping, including valve body, outer cover, inner cover, the first gasket, the second gasket and stick harness group
Part, which is characterized in that the valve body has the first opening upward, the second opening and concentric inlet channel, outlet logical
The end face of road, first opening and the second opening is equipped with the outer cover, and the inlet channel and outlet passageway are respectively arranged on
The opposite sides of the valve body, and respectively with it is described first opening and the second open communication；The plug combination includes valve head, valve
Bar, spring, casing and fixed link, the valve head and valve-stem integrated molding, and the vertical section across of the valve head, outside
Edge is equipped with slope to be overlapped in first opening, and the card slot of annular is offered on the inner wall of first opening, described
The first gasket is socketed on valve rod, the medial surface of first gasket has inner sunken face, and the medial surface of first gasket
Edge has the horizontal plane for being overlapped on the horizontal cell wall of the card slot；The lower end of the fixed link is connected to the valve body
Side wall on, the upper end of the fixed link is equipped with external screw thread, and to connect described sleeve pipe, the both ends of the spring are connected to institute
It states on the end face of valve rod and fixed link and the spring is placed in described sleeve pipe；The lower section of outer cover is covered in described, it is described interior
Lid is arch, and is connect with second gasket, and the top and bottom of second gasket all have inner sunken face；Positioned at described
The upper surface of the first parameatal valve body has outer convex globoidal with the valve head top surface nature transition, with described the
The inner sunken face of two gaskets is bonded.
2. the check-valves according to claim 1 for gas piping, which is characterized in that the second opening lower section goes out
Gas channel has inclined side wall outward.
3. the check-valves according to claim 1 for gas piping, which is characterized in that the outer cover passes through bolt and spiral shell
Mother connect with valve body.
4. the check-valves according to claim 1 for gas piping, which is characterized in that the top surface of second gasket
Edge is equipped with multiple fore-sets for surrounding annular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820133660.0U CN207989822U (en) | 2018-01-25 | 2018-01-25 | Check-valves for gas piping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820133660.0U CN207989822U (en) | 2018-01-25 | 2018-01-25 | Check-valves for gas piping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207989822U true CN207989822U (en) | 2018-10-19 |
Family
ID=63821274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820133660.0U Expired - Fee Related CN207989822U (en) | 2018-01-25 | 2018-01-25 | Check-valves for gas piping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207989822U (en) |
-
2018
- 2018-01-25 CN CN201820133660.0U patent/CN207989822U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181019 Termination date: 20220125 |