CN209084033U - A kind of compound sealing structure - Google Patents
A kind of compound sealing structure Download PDFInfo
- Publication number
- CN209084033U CN209084033U CN201821892296.2U CN201821892296U CN209084033U CN 209084033 U CN209084033 U CN 209084033U CN 201821892296 U CN201821892296 U CN 201821892296U CN 209084033 U CN209084033 U CN 209084033U
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- CN
- China
- Prior art keywords
- ring
- sealing
- valve seat
- sealing ring
- annular groove
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- Sealing Devices (AREA)
Abstract
The utility model discloses a kind of compound sealing structures, including by valve seat pedestal, sealing ring and the valve seat gland seal assembly constituted and the spool being arranged in seal assembly, the outer upper end edge of the valve seat pedestal is equipped with first annular groove, the inside lower end edge of the valve seat gland is equipped with second annular groove, the first annular groove and second annular groove cooperation constitute sealing ring and accommodate cavity, the sealing ring is fixed in sealing ring accommodating cavity body, the top of the sealing ring accommodating cavity is equipped with gap, the position that sealing ring accommodating cavity is corresponded on the side wall of the spool is equipped with a ring-shaped step, the ring-shaped step, which passes through gap and squeezes with sealing ring, constitutes the first sealing, it is abutted on the inside of the ring-shaped step with the upper surface of valve seat pedestal and constitutes the second sealing.The utility model can reduce the leakage rate of valve, to reduce loss, guarantee being normally carried out for production, guarantee the reliability of entire sealing system.
Description
Technical field
The utility model relates to component of machine technical fields, more particularly to a kind of compound sealing structure for valve.
Background technique
Sealing ring is equipped between existing valvular valve seat pedestal and valve seat gland to guarantee the sealing effect of valve, however,
The reliability of the sealing structure is lower, sealing ring in use once damage will to causing valve to leak, thus
Influence normal production.
Summary of the invention
The purpose of the invention of the present invention is to overcome the above problem to provide a kind of compound sealing structure.
To achieve the above object of the invention, the technical solution adopted in the utility model is: a kind of compound sealing structure, including by
The seal assembly that valve seat pedestal, sealing ring and valve seat gland are constituted and the spool being arranged in seal assembly, the valve cup bottom
The outer upper end edge of seat is equipped with first annular groove, and the inside lower end edge of the valve seat gland is equipped with second annular groove,
The first annular groove and second annular groove cooperation constitute sealing ring and accommodate cavity, and the sealing ring is fixed on sealing ring appearance
It sets in cavity, the top of the sealing ring accommodating cavity is equipped with gap, and sealing ring accommodating cavity is corresponded on the side wall of the spool
Position be equipped with a ring-shaped step, the ring-shaped step pass through gap and with sealing ring squeeze constitute the first sealing, the ring
It is abutted on the inside of shape step with the upper surface of valve seat pedestal and constitutes the second sealing.
Above, first sealing is soft seal, and second sealing is hard sealing.
In above-mentioned technical proposal, the valve seat pedestal and valve seat gland are through being bolted fixation.
In above-mentioned technical proposal, the bolt is hexagon socket head cap screw.
In above-mentioned technical proposal, the sealing ring is O-ring or abnormity circle or PTFE circle.
In above-mentioned technical proposal, the height of the ring-shaped step is 0.3 ~ 0.8mm.For the height of ring-shaped step, this reality
It is not specifically limited with novel, it is typical but non-limiting to can be 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm.
Preferably 0.5mm.
In above-mentioned technical proposal, the face that the ring-shaped step is contacted with sealing ring is smooth cambered surface.
In above-mentioned technical proposal, the inner top side edge of the valve seat pedestal is arcuate structure.
Since above-mentioned technical proposal is used, the utility model has the advantage that compared with prior art
1. the utility model, can by the dual-seal of the first sealing and the second sealing sealed firmly of soft seal
In the sealing ring damage of the first sealing, the leakage rate of valve is reduced by the second sealing, to reduce loss, guarantees production
Be normally carried out；
2. second sealing of the utility model also acts as position-limiting action, so that pressure is assigned on valve seat pedestal, thus
Reduce ring-shaped step to the pressure of sealing ring, extends the service life of sealing ring；
3. the inner top side edge of the valve seat pedestal of the utility model is arcuate structure, cooperate the outer upper end of valve seat pedestal
The first annular groove at edge can slightly be bent to the first sealing direction in the case where compression, to ensure that entire close
The reliability of envelope system.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model embodiment one.
Fig. 2 is the partial enlargement diagram in Fig. 1 at A.
Wherein: 1, valve seat pedestal；2, sealing ring；3, valve seat gland；4, spool；5, first annular groove；6, the second annular
Groove；7, ring-shaped step；8, bolt.
Specific embodiment
The utility model is further described with reference to the accompanying drawings and embodiments:
Embodiment one:
Referring to shown in Fig. 1 and 2, a kind of compound sealing structure, including by 3 structure of valve seat pedestal 1, sealing ring 2 and valve seat gland
At seal assembly and the spool 4 that is arranged in seal assembly, the outer upper end edge of the valve seat pedestal be equipped with the first ring
The inside lower end edge of connected in star 5, the valve seat gland is equipped with second annular groove 6, the first annular groove and the second ring
Connected in star cooperation constitutes sealing ring and accommodates cavity, and the sealing ring is fixed in sealing ring accommodating cavity body, the sealing ring accommodating
The top of cavity is equipped with gap, and the position that sealing ring accommodating cavity is corresponded on the side wall of the spool is equipped with a ring-shaped step 7, institute
Ring-shaped step is stated across gap and squeezes the first sealing of composition with sealing ring, the ring-shaped step inside is upper with valve seat pedestal
Surface, which abuts, constitutes the second sealing.
In the present embodiment, first sealing is soft seal, and second sealing is hard sealing.
In the present embodiment, the valve seat pedestal is connected and fixed with valve seat gland through bolt 8.
Specifically, the bolt is hexagon socket head cap screw.
In the present embodiment, the sealing ring is O-ring or abnormity circle or PTFE circle.
In the present embodiment, the height of the ring-shaped step is 0.5mm.
In the present embodiment, the face that the ring-shaped step is contacted with sealing ring is smooth cambered surface, reduces ring-shaped step and squeezes
Sealing ring is damaged caused by sealing ring, extends the service life of sealing ring.
In the present embodiment, the inner top side edge of the valve seat pedestal is arcuate structure, on the outside for cooperating valve seat pedestal
The first annular groove of end margin can slightly bend to the first sealing direction in the case where compression, ensure that entire sealing
The reliability of system.
The utility model can carry out time sealing when sealing ring is damaged by the second sealing, so that valve
Leakage rate is not too big, by replacing sealing ring in time, can put into production again, caused by reducing due to leakage rate is excessive
Loss, ensure that being normally carried out for production.
The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new
Type.A variety of modifications of above-described embodiment will be readily apparent to those skilled in the art, determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to above-described embodiment shown in this article, and is to fit to and principles disclosed herein
The widest scope consistent with features of novelty.
Claims (7)
1. a kind of compound sealing structure including the seal assembly being made of valve seat pedestal, sealing ring and valve seat gland and is worn
Spool in seal assembly, it is characterised in that: the outer upper end edge of the valve seat pedestal is equipped with first annular groove, described
The inside lower end edge of valve seat gland is equipped with second annular groove, and the first annular groove and second annular groove cooperation are constituted
Sealing ring accommodates cavity, and the sealing ring is fixed in sealing ring accommodating cavity body, and the top of the sealing ring accommodating cavity is equipped with
Gap, the position that sealing ring accommodating cavity is corresponded on the side wall of the spool are equipped with a ring-shaped step, and the ring-shaped step passes through
Gap simultaneously squeezes with sealing ring and constitutes the first sealing, abuts on the inside of the ring-shaped step with the upper surface of valve seat pedestal and constitutes the
Two sealings.
2. compound sealing structure according to claim 1, it is characterised in that: the valve seat pedestal and valve seat gland are through bolt
It is connected and fixed.
3. compound sealing structure according to claim 2, it is characterised in that: the bolt is hexagon socket head cap screw.
4. compound sealing structure according to claim 1, it is characterised in that: the sealing ring is O-ring or abnormity circle
Or PTFE circle.
5. compound sealing structure according to claim 1, it is characterised in that: the height of the ring-shaped step be 0.3 ~
0.8mm。
6. compound sealing structure according to claim 1, it is characterised in that: the face that the ring-shaped step is contacted with sealing ring
For smooth cambered surface.
7. compound sealing structure according to claim 1, it is characterised in that: the inner top side edge of the valve seat pedestal is
Arcuate structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821892296.2U CN209084033U (en) | 2018-11-16 | 2018-11-16 | A kind of compound sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821892296.2U CN209084033U (en) | 2018-11-16 | 2018-11-16 | A kind of compound sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209084033U true CN209084033U (en) | 2019-07-09 |
Family
ID=67124392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821892296.2U Active CN209084033U (en) | 2018-11-16 | 2018-11-16 | A kind of compound sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209084033U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110906033A (en) * | 2019-11-18 | 2020-03-24 | 中航光电科技股份有限公司 | Modular pressure relief assembly capable of automatically relieving pressure |
-
2018
- 2018-11-16 CN CN201821892296.2U patent/CN209084033U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110906033A (en) * | 2019-11-18 | 2020-03-24 | 中航光电科技股份有限公司 | Modular pressure relief assembly capable of automatically relieving pressure |
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