CN207161792U - A kind of sealing structure of Jing Yin piston check valve - Google Patents
A kind of sealing structure of Jing Yin piston check valve Download PDFInfo
- Publication number
- CN207161792U CN207161792U CN201720994663.9U CN201720994663U CN207161792U CN 207161792 U CN207161792 U CN 207161792U CN 201720994663 U CN201720994663 U CN 201720994663U CN 207161792 U CN207161792 U CN 207161792U
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- piston
- valve
- cast iron
- opening
- sealing structure
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Abstract
The utility model proposes a kind of sealing structure of Jing Yin piston check valve, including valve body, valve rod, valve seat, the valve rod stretches in the valve body and is connected with piston, the piston is stuck on the valve seat, the valve body oral area is provided with bushing, the piston outer wall is affixed on the bushing inwall, the piston outer wall is provided with least two groups of seal grooves, the seal groove includes at least two annular slots, opening cast iron is respectively equipped with the annular slot, the opening of the opening cast iron is staggered setting, this check-valves can effectively avoid the problem of cast iron ring opening sealing leak, frictional force caused by small cast iron ring is small in addition, valve service life can be extended.
Description
Technical field
It the utility model is related to valve field, more particularly to the sealing structure of Jing Yin piston check valve.
Background technology
In the harsh industry of the production status such as oil, natural gas, petrochemical industry, electric power, adverse current is prevented when pipeline requires, and it is right
Noise will use the sealing structure of Jing Yin piston check valve when there are certain requirements.Piston check valve in the market
Between flap and bushing sealing use single opening cast iron sealing ring, this structure in use, in cast iron
Interface easily produces leakage, and cast iron ring and the frictional force of bushing are larger.
Utility model content
In order to solve the above technical problems, the utility model proposes a kind of sealing structure of Jing Yin piston check valve, bag
Valve body, valve rod, valve seat are included, the valve rod is stretched in the valve body and is connected with piston, and the piston is stuck on the valve seat, institute
State valve body oral area and be provided with bushing, the piston outer wall is affixed on the bushing inwall, and the piston outer wall is provided with least two groups of sealings
Groove, the seal groove include at least two annular slots, opening cast iron, the opening cast iron are respectively equipped with the annular slot
Opening be staggered setting.
Preferably, the seal groove is two groups.
Preferably, the seal groove is located at the upper and lower part of the piston respectively.
The utility model proposes the sealing structure of Jing Yin piston check valve have following beneficial effect：This check-valves can
The problem of effectively avoiding a cast iron ring opening sealing leak, frictional force caused by small cast iron ring is small in addition, can extend
Valve service life.
Brief description of the drawings
, below will be to needed for embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
The accompanying drawing to be used is briefly described.
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the enlarged drawing at A；
Wherein, 1- valve bodies, 2- valve rods, 3- valve seats, 4- pistons, 5- bushings, 6- seal grooves, 7- opening cast irons.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is entered
Row clearly and completely describes.
As shown in figure 1, the utility model proposes a kind of sealing structure of Jing Yin piston check valve, including valve body 1, valve
Bar 2, valve seat 3, the valve rod 2 are stretched in the valve body 1 and are connected with piston 4, and the piston 4 is stuck on the valve seat 3, described
The oral area of valve body 1 is provided with bushing 5, and the outer wall of piston 4 is affixed on the inwall of bushing 5, and the outer wall of piston 4 is close provided with least two groups
Sealing groove 6, the seal groove 6 include at least two annular slots, and opening cast iron 7 is respectively equipped with the annular slot, described to open
The opening of mouthful cast iron 7 is staggered settings, and this check-valves is there is provided the structure of bushing 5, and bushing 5 can be polytetrafluoroethylmaterial material, such as
Piston 4 shown in Fig. 1, piston 4 are provided with annular groove with the junction of valve body 1, and set less opening cast iron 7, and be open cast iron 7
Opening be staggered setting, the interface of two cast iron rings staggers 180 °, and the opening cast iron 7 of bottom can make up the opening cast iron on top
7 opening leakage problem.
Preferably, the seal groove 6 can be two groups, can also set more than two, the seal groove 6 is located at institute respectively
State the upper and lower part of piston 4.
It is noted that cast iron selects the less cast iron of width, the friction between bushing 5 can be reduced, increase valve
Physical life.
A variety of modifications to embodiment will be apparent for those skilled in the art, determine herein
The General Principle of justice can be realized in other embodiments in the case where not departing from spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide scope consistent with features of novelty.
Claims (3)
1. a kind of sealing structure of Jing Yin piston check valve, including valve body, valve rod, valve seat, the valve rod stretch in the valve body
Interior and be connected with piston, the piston is stuck on the valve seat, it is characterised in that the valve body oral area is provided with bushing, the work
Wall is affixed on the bushing inwall beyond the Great Wall, and the piston outer wall is provided with least two groups of seal grooves, and the seal groove includes at least two
Annular slot, is respectively equipped with opening cast iron in the annular slot, and the opening of the opening cast iron is staggered setting.
2. the sealing structure of Jing Yin piston check valve according to claim 1, it is characterised in that the seal groove is two
Group.
3. the sealing structure of Jing Yin piston check valve according to claim 2, it is characterised in that the seal groove difference
Positioned at the upper and lower part of the piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720994663.9U CN207161792U (en) | 2017-08-10 | 2017-08-10 | A kind of sealing structure of Jing Yin piston check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720994663.9U CN207161792U (en) | 2017-08-10 | 2017-08-10 | A kind of sealing structure of Jing Yin piston check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207161792U true CN207161792U (en) | 2018-03-30 |
Family
ID=61716443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720994663.9U Active CN207161792U (en) | 2017-08-10 | 2017-08-10 | A kind of sealing structure of Jing Yin piston check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207161792U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107504231A (en) * | 2017-08-10 | 2017-12-22 | 德维阀门铸造（苏州）股份有限公司 | A kind of sealing structure of Jing Yin piston check valve |
-
2017
- 2017-08-10 CN CN201720994663.9U patent/CN207161792U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107504231A (en) * | 2017-08-10 | 2017-12-22 | 德维阀门铸造（苏州）股份有限公司 | A kind of sealing structure of Jing Yin piston check valve |
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