CN205689785U - A kind of pressure balance type low moment of torsion flat gate valve - Google Patents
A kind of pressure balance type low moment of torsion flat gate valve Download PDFInfo
- Publication number
- CN205689785U CN205689785U CN201620536501.6U CN201620536501U CN205689785U CN 205689785 U CN205689785 U CN 205689785U CN 201620536501 U CN201620536501 U CN 201620536501U CN 205689785 U CN205689785 U CN 205689785U
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- China
- Prior art keywords
- flashboard
- valve
- valve seat
- valve body
- flap
- Prior art date
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Abstract
The utility model discloses a kind of pressure balance type low moment of torsion flat gate valve, including flashboard, the valve rod being connected with this flashboard, and it is positioned at valve body and the valve seat of this flashboard opposite sides, described valve seat is arranged between described valve body and described flashboard, and be connected with described ram seal, O RunddichtringO it is provided with between described valve body and described valve seat, it is provided with seating spring between described valve seat and described valve body, pressure release runner it is provided with in being characterized in described flashboard, described pressure release runner one end connects with the upstream passageway of described flashboard side, its other end connects with the lumen of this gate valve, it is additionally provided with little flap on described pressure release runner, it is provided with flap spring between described little flap and described flashboard.This technical scheme can either ensure the sealing of valve, can alleviate again the moment of torsion of valve.
Description
Technical field
This utility model relates to a kind of pressure balance type low moment of torsion flat gate valve.
Background technology
As depicted in figs. 1 and 2, it includes valve rod 1.1, flashboard 1.2, valve body 1.3, O to traditional flat gate valve structure
1.4, sealing ring 1.5, valve seat 1.6, seating spring 1.7, during the flashboard of traditional flat gate valve is clamped in by two floating valve seats
Between, when valve is closed and upstream has pressure P, the thrust that upstream valve seat produces at initial tension of spring and medium differential pressure is made
It is close to flashboard under with ensure to seal.Owing to the upstream and downstream valve seat of this kind of structure is close to flashboard always, cause at valve opening
Time, the frictional force that flashboard is lifted up producing with valve seat is the biggest, and moment of torsion is the heaviest, only strengthens handwheel diameter or executor's rule
Lattice solve, relatively costly.And this structure is during using frequently, ring wear is serious, and valve seal lost efficacy.
Utility model content
The deficiency existed for prior art, the purpose of this utility model is to provide a kind of sealing both having ensured valve,
Alleviate again a kind of pressure balance type low moment of torsion flat gate valve of the moment of torsion of valve.
For achieving the above object, this utility model provides following technical scheme: a kind of pressure balance type low moment of torsion flat board
Gate valve, including flashboard, the valve rod being connected with this flashboard, and is positioned at valve body and the valve seat of this flashboard opposite sides, described
Valve seat is arranged between described valve body and described flashboard, and is connected with described ram seal, between described valve body and described valve seat
It is provided with O RunddichtringO, between described valve seat and described valve body, is provided with seating spring, it is characterised in that: it is provided with in described flashboard and lets out
Baric flow road, described pressure release runner one end connects with the upstream passageway of described flashboard side, and its other end connects with the lumen of this gate valve
Logical, described pressure release runner is additionally provided with little flap, between described little flap and described flashboard, is provided with flap spring.
Preferably, above-mentioned a kind of pressure balance type low moment of torsion flat gate valve, between wherein said valve body and described flashboard
It is additionally provided with flashboard locating ring.
Preferably, above-mentioned a kind of pressure balance type low moment of torsion flat gate valve, wherein said little flap cross section is T-shaped,
Described flap spring it is provided with between its both sides section of stretching out and described flashboard.
By using technique scheme, serve following effect compared to existing technology: this utility model uses inner valve
Lobe pressure release balanced structure, when valve opening, valve rod is lifted up, and little flap is under the effect of flap spring and upstream pressure P
Departing from sealing surface at flashboard relief hole, upstream pressure enters the lumen of gate valve, now upstream pressure and lumen pressure balance, upstream
Valve seat is subjected only to the thrust of seating spring；Downstream valve seat departs from flashboard, during valve opening, lock under the effect of pressure reduction P
Only have the frictional force produced by upstream valve seat spring pre-tightening between plate and valve seat, greatly alleviate the switching torque of valve,
Use the handwheel of minor diameter and the executor of small dimension just can complete the operation of valve, reduce the cost of valve.This structure
During valve uses frequently, sealing ring, almost without abrasion, extends the service life of valve, it is ensured that the quality of product.
Accompanying drawing explanation
Fig. 1: traditional flat gate valve structure chart；
Fig. 2: A plot structure enlarged diagram in this utility model Fig. 1；
Fig. 3: this utility model structural representation.
Detailed description of the invention
Below in conjunction with accompanying drawing, the detailed description of the invention of the present invention is described in further detail, so that technical solution of the present invention is more
Should be readily appreciated that and grasp.
As it is shown on figure 3, a kind of pressure balance type low moment of torsion flat gate valve, including flashboard 4, the valve being connected with this flashboard 4
Bar 1, and it is positioned at valve body 6 and the valve seat 8 of this flashboard 4 opposite sides, described valve seat 8 is arranged at described valve body 6 and described lock
Between plate 4, and use sealing ring 10 to be tightly connected with described flashboard 4, be provided with O type between described valve body 6 and described valve seat 8 and seal
Circle 7, is provided with seating spring 9, is provided with pressure release runner, described pressure release stream in described flashboard 4 between described valve seat 8 and described valve body 6
One end, road connects with the upstream passageway of described flashboard side, and its other end connects with the lumen of this gate valve, on described pressure release runner
It is additionally provided with little flap 2, between described little flap 2 and described flashboard 4, is provided with flap spring 3.
It is additionally provided with flashboard locating ring 5 between wherein said valve body 6 and described flashboard 4.
Wherein said little flap 2 cross section is T-shaped, is provided with described between its both sides section of stretching out and described flashboard 4
Flap spring 3.
By using technique scheme, serve following effect compared to existing technology: this utility model uses inner valve
Lobe pressure release balanced structure, when valve opening, valve rod is lifted up, and little flap is under the effect of flap spring and upstream pressure P
Departing from sealing surface at flashboard relief hole, upstream pressure enters the lumen of gate valve, now upstream pressure and lumen pressure balance, upstream
Valve seat is subjected only to the thrust of seating spring；Downstream valve seat departs from flashboard, during valve opening, lock under the effect of pressure reduction P
Only have the frictional force produced by upstream valve seat spring pre-tightening between plate and valve seat, greatly alleviate the switching torque of valve,
Use the handwheel of minor diameter and the executor of small dimension just can complete the operation of valve, reduce the cost of valve.This structure
During valve uses frequently, sealing ring, almost without abrasion, extends the service life of valve, it is ensured that the quality of product.
The above is only preferred implementation of the present utility model, and protection domain of the present utility model is not limited merely to
Above-described embodiment, all technical schemes belonged under this utility model thinking belong to protection domain of the present utility model.Should refer to
Go out, for those skilled in the art, without departing from the some improvement under this utility model principle premise and
Retouching, these improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (3)
1. a pressure balance type low moment of torsion flat gate valve, including flashboard, the valve rod being connected with this flashboard, and is positioned at this lock
The valve body of plate opposite sides and valve seat, described valve seat is arranged between described valve body and described flashboard, and close with described flashboard
Envelope connects, and is provided with O RunddichtringO, is provided with valve seat bullet between described valve seat and described valve body between described valve body and described valve seat
Spring, it is characterised in that: it is provided with the upstream passageway of pressure release runner, described pressure release runner one end and described flashboard side in described flashboard
Connection, its other end connects with the lumen of this gate valve, and described pressure release runner is additionally provided with little flap, described little flap and described lock
Flap spring it is provided with between plate.
A kind of pressure balance type low moment of torsion flat gate valve the most according to claim 1, it is characterised in that: described valve body and institute
State and between flashboard, be additionally provided with flashboard locating ring.
A kind of pressure balance type low moment of torsion flat gate valve the most according to claim 1, it is characterised in that: described little flap is horizontal
Cross section is T-shaped, is provided with described flap spring between its both sides section of stretching out and described flashboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620536501.6U CN205689785U (en) | 2016-06-03 | 2016-06-03 | A kind of pressure balance type low moment of torsion flat gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620536501.6U CN205689785U (en) | 2016-06-03 | 2016-06-03 | A kind of pressure balance type low moment of torsion flat gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205689785U true CN205689785U (en) | 2016-11-16 |
Family
ID=57260654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620536501.6U Expired - Fee Related CN205689785U (en) | 2016-06-03 | 2016-06-03 | A kind of pressure balance type low moment of torsion flat gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205689785U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109058491A (en) * | 2018-09-18 | 2018-12-21 | 杨胜 | A kind of power station sluice valve |
-
2016
- 2016-06-03 CN CN201620536501.6U patent/CN205689785U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109058491A (en) * | 2018-09-18 | 2018-12-21 | 杨胜 | A kind of power station sluice valve |
| CN109058491B (en) * | 2018-09-18 | 2019-11-08 | 温州三菱阀门锻造有限公司 | A kind of power station sluice valve |
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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: 20161116 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |