CN103953743B - Expansion-type dual-gate parallel gate valve capable of preventing valve seat from being pushed towards gate - Google Patents
Expansion-type dual-gate parallel gate valve capable of preventing valve seat from being pushed towards gate Download PDFInfo
- Publication number
- CN103953743B CN103953743B CN201410205418.6A CN201410205418A CN103953743B CN 103953743 B CN103953743 B CN 103953743B CN 201410205418 A CN201410205418 A CN 201410205418A CN 103953743 B CN103953743 B CN 103953743B
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- China
- Prior art keywords
- valve
- valve seat
- gate
- flashboard
- seat
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/0227—Packings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/16—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together
- F16K3/18—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together by movement of the closure members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
- F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
Abstract
The invention discloses an expansion-type dual-gate parallel gate valve capable of preventing valve seats from being pushed towards gates. The expansion-type dual-gate parallel gate valve capable of preventing the valve seats from being pushed towards the gates comprises valve seats which are embedded in two symmetric seat holes of a valve body, wherein a stopping structure which prevents the valve seat from moving towards the gate is arranged between each valve seat and each seat hole. By designing the end part, facing to the gate, of each valve seat into a shaft shoulder structure and then preventing the valve seat from being pushed towards the gate through a guide plate which is sheathed on a shaft shoulder, in the opening and closing process of the gate valve, the guide plate is tightly pressed against the valve body by a pressing piece, the valve seat and the gate are always in a separated state, the friction between the valve seat and the gate is avoided and the friction torque is reduced.
Description
Technical field
The present invention relates to a kind of gate valve is and in particular to a kind of expansion type double disc run-in index lock preventing valve seat from pushing flashboard to
Valve.
Background technology
Expansion type double disc Parallel gate valve Parallel slide valve, it is little, easy to operate to have a resistance of medium, quick, can lead to spherical pig cleaning pipe
The advantages of road, is widely used chemical industry, oil, natural gas, power plant, colliery, building, iron and steel, the row such as light industry and sewage disposal
Industry.Conventional expansion type double disc Parallel gate valve Parallel slide valve, when the valve is closed, valve rod drives main gate-board to move downward, and auxiliary gate-board exists
Move downwardly together with main gate-board under the drive of spreading mechanism connecting rod, strut major-minor flashboard in fact in the unlatching of valve, closed position
Show the circulation of upstream and downstream medium and block.Combination flashboard in the beginning of motion process and terminal, due to the cooperation of major and minor flashboard tiltedly
The change of face position makes the generation of combination flashboard both sides sealing face be close to and distending effect, during reaching forced seal and to realize opening
Guarantor's effect to sealing surface.Generally believe in industry during valve opening and closing, between flashboard and valve seat, be in disengaging shape all the time
State, reduces the friction of sealing pair, has the advantages that little, good seal performance of wearing and tearing.But send out through our factory technical staff research
Existing, because static pressure face is more than sealing surface of seat, during valve opening and closing, valve seat will tightly push lock under the effect of medium power
Plate, leads to can not be in all the time disengaged position between flashboard and valve seat, and actual conditions are the increase in valve operation moment of torsion, and due to
The moment of torsion of expansion type double disc Parallel gate valve Parallel slide valve is only the half of common gate valve, is difficult to discover.
Content of the invention
The invention provides a kind of expansion type double disc Parallel gate valve Parallel slide valve preventing valve seat from pushing flashboard to, solve tradition swollen
The valve seat of expanding double disc Parallel gate valve Parallel slide valve pushes the problem of flashboard under the effect of medium power to.
In order to solve above-mentioned technical problem, the technical solution adopted in the present invention is.
A kind of expansion type double disc Parallel gate valve Parallel slide valve preventing valve seat from pushing flashboard to, including being embedded in valve body two symmetrical seat in the hole
Valve seat, be provided with the barrier structure to flashboard movement for the stop valve seat between each valve seat and bore.
Described valve seat is arranged to shaft shoulder structure towards the end of flashboard, and described barrier structure includes the shaft shoulder and guide plate, institute
State and the through hole being mated with the shaft shoulder is had on guide plate, the diameter of described through hole is less than the diameter of valve seat periphery, described guide plate
It is enclosed within the shaft shoulder simultaneously by through hole, and fastened with valve body with valve body compression or by securing member by compressing member.
Described compressing member is rocking arm, and the top of described rocking arm is flexibly connected with flashboard side, the bottom setting of described rocking arm
Ovalisation termination, the major axis of described ellipse termination and the distance between relative guide plate coupling.
Described valve seat has annular groove towards on the end face of flashboard, is pressed with sealing ring in described annular groove.
Described sealing ring is elastomeric soft materials sealing ring.
Radial direction annular groove is had on described valve seat periphery, in described annular groove, is pressed with static pressure elastomer.
The invention has the beneficial effects as follows：1st, the present invention is by being arranged to shaft shoulder structure by valve seat towards the end of flashboard, so
Stop that valve seat pushes flashboard to by the guide plate that is enclosed within the shaft shoulder afterwards, gate valve in opening-closing process, the compacted part of guide plate and valve
Body compresses, and valve seat and flashboard are in disengaged position all the time it is therefore prevented that friction between valve seat and flashboard, reduces friction torque；
2nd, avoid when gate valve is opened valve seat to contact with ram seal face, reduce the friction of sealing, extend the gate valve life-span, lift gate valve
Market core competitiveness；3rd, the valve seat of the present invention is provided with sealing ring towards on the end face of flashboard, and this sealing ring is bullet
Property soft material sealing ring, make between valve seat and flashboard formed resilient seal surface, sealing tightr；4th, present configuration design is new
Grain husk, can directly transform in traditional valve seat construction, make gate valve part accomplish seriation, standardization, generalization, improve product and set
The modularization of meter and production are flexible, reduce mould and production cost, foundry goods is general and is not required to assemble for the first time, and production is greatly shortened
Manufacturing cycle.
Brief description
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the structural scheme of mechanism of rocking arm.
Specific embodiment
Below in conjunction with Figure of description, the invention will be further described.Following examples are only used for clearly
Technical scheme is described, and can not be limited the scope of the invention with this.
As shown in figure 1, a kind of expansion type double disc Parallel gate valve Parallel slide valve preventing valve seat from pushing flashboard to, including being embedded in valve body 1
The valve seat 2 of two symmetrical seat in the holes, is provided with the blocking junction to flashboard 3 movement for the stop valve seat 2 between each valve seat 2 and bore
Structure.Barrier structure includes the shaft shoulder 4 and guide plate 5, and this shaft shoulder is to be formed towards the end setting of flashboard 3 by valve seat 2, i.e. valve seat 2
End towards flashboard 3 is arranged to shaft shoulder structure, and guide plate 5 is had the through hole being mated with the shaft shoulder 4, and the diameter of through hole is less than valve
The diameter of seat 2 peripheries, guide plate 5 is enclosed within the shaft shoulder 4 by through hole, and is compressed with valve body 1 by compressing member.
Compressing member is rocking arm 7, as shown in Fig. 2 the top of this rocking arm 7 is flexibly connected with flashboard 3 side, the bottom of rocking arm 7
Setting ovalisation termination 8, the major axis of oval termination 8 and the distance between relative guide plate 5 coupling, in opening-closing process
In, the compacted part of guide plate 5 and valve body 1 compress, and after opening-closing process terminates, flashboard 3 expands, and directly compress guide plate 5,
So guide plate is in impaction state in whole process all the time.
In order that forming resilient seal surface between valve seat 2 and flashboard 3, sealing is tightr, and valve seat 2 is towards the end face of flashboard 3
On have annular groove, be pressed with sealing ring 6 in annular groove, this sealing ring 6 adopt elastomeric soft materials sealing ring.In order to ensure valve seat 2 and and
Elastic packing between valve body 1, valve seat 2 periphery has radial direction annular groove, is pressed with static pressure elastomer 9 in annular groove.
Above-mentioned gate valve, when mounted, first embeds valve seat 2 in valve body 1 bore, is then directed to plate 5 and is enclosed within valve seat 2
On, then by embedded flashboard 3.
In sum, the present invention, by valve seat 2 is arranged to shaft shoulder structure towards the end of flashboard 3, then passes through to be enclosed within
Guide plate 5 on the shaft shoulder 4 stops that valve seat 2 pushes flashboard 3 to, and gate valve 3 in opening-closing process, press by the compacted part of guide plate and valve body 1
Tightly, valve seat 2 and flashboard 3 are in disengaged position all the time it is therefore prevented that friction between valve seat 2 and flashboard 3, reduce friction torque,
Avoid when gate valve is opened valve seat 2 to contact with flashboard 3 sealing surface, reduce the friction of sealing, extend the gate valve life-span, lift gate valve
Market core competitiveness；Present configuration is novel in design simultaneously, directly can transform in traditional valve seat construction, make gate valve zero
Part accomplishes seriation, standardization, generalization, improves the modularization of product design and produces flexible, reduces mould and production cost,
Foundry goods is general and is not required to assemble for the first time, and manufacturing cycle is greatly shortened.
General principle, principal character and the advantage of the present invention have been shown and described above.The technical staff of the industry should
Understand, the present invention is not restricted to the described embodiments, the simply explanation present invention's described in above-described embodiment and specification is former
Reason, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, these changes and improvements
Both fall within scope of the claimed invention.Claimed scope is by appending claims and its equivalent circle.
Fixed.
Claims (5)
1. a kind of expansion type double disc Parallel gate valve Parallel slide valve preventing valve seat from pushing flashboard to it is characterised in that：Including being embedded in valve body（1）
The valve seat of two symmetrical seat in the holes（2）, each valve seat（2）It is provided with a stop valve seat and bore between（2）To flashboard（3）Mobile
Barrier structure；
Described valve seat（2）Towards flashboard（3）End be arranged to shaft shoulder structure, described barrier structure includes the shaft shoulder（4）With in order to
Guide plate to flashboard guiding（5）, described guide plate（5）On have and the shaft shoulder（4）The through hole of coupling, the diameter of described through hole is little
In valve seat（2）The diameter of periphery, described guide plate（5）The shaft shoulder is enclosed within by through hole（4）On, and pass through compressing member and valve body
（1）Compression.
2. a kind of expansion type double disc Parallel gate valve Parallel slide valve preventing valve seat from pushing flashboard to according to claim 1, its feature
It is：Described compressing member is rocking arm（7）, described rocking arm（7）Top and flashboard（3）Side is flexibly connected, described rocking arm（7）'s
Bottom arranges ovalisation termination（8）, described ellipse termination（8）Major axis and relative guide plate（5）The distance between
Join.
3. a kind of expansion type double disc Parallel gate valve Parallel slide valve preventing valve seat from pushing flashboard to according to claim 1, its feature
It is：Described valve seat（2）Towards flashboard（3）End face on have annular groove, be pressed with sealing ring in described annular groove（6）.
4. a kind of expansion type double disc Parallel gate valve Parallel slide valve preventing valve seat from pushing flashboard to according to claim 3, its feature
It is：Described sealing ring（6）For elastomeric soft materials sealing ring.
5. a kind of expansion type double disc Parallel gate valve Parallel slide valve preventing valve seat from pushing flashboard to according to claim 1, its feature
It is：Described valve seat（2）Radial direction annular groove is had on periphery, in described annular groove, is provided with static pressure elastomer（9）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410205418.6A CN103953743B (en) | 2014-05-16 | 2014-05-16 | Expansion-type dual-gate parallel gate valve capable of preventing valve seat from being pushed towards gate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410205418.6A CN103953743B (en) | 2014-05-16 | 2014-05-16 | Expansion-type dual-gate parallel gate valve capable of preventing valve seat from being pushed towards gate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103953743A CN103953743A (en) | 2014-07-30 |
| CN103953743B true CN103953743B (en) | 2017-02-22 |
Family
ID=51331058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410205418.6A Active CN103953743B (en) | 2014-05-16 | 2014-05-16 | Expansion-type dual-gate parallel gate valve capable of preventing valve seat from being pushed towards gate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103953743B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB190904541A (en) * | 1909-02-24 | 1909-07-01 | James Robinson | Improvements in or relating to Stop Valves for Steam or other Fluids. |
| GB781122A (en) * | 1954-07-02 | 1957-08-14 | Dikkers & Co N V G | Gate-valves |
| CN2806910Y (en) * | 2005-07-12 | 2006-08-16 | 龚伟安 | Gate vale with parallel double gate plates capable of generating initial seal force by inclined plane |
| CN201723755U (en) * | 2010-08-16 | 2011-01-26 | 成都乘风阀门有限责任公司 | Flat gate valve for forge welding |
| CN102954240A (en) * | 2011-08-23 | 2013-03-06 | 上海凯工阀门有限公司 | Flat gate valve with double gates |
| CN102359614B (en) * | 2011-09-14 | 2012-11-21 | 成都海科机械设备制造有限公司 | Gate valve |
| CN203926859U (en) * | 2014-05-16 | 2014-11-05 | 昆山维萨阀门有限公司 | A kind ofly prevent that valve seat from pushing the expansion double-flashboard Parallel gate valve Parallel slide valve of flashboard to |
-
2014
- 2014-05-16 CN CN201410205418.6A patent/CN103953743B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN103953743A (en) | 2014-07-30 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Jinxi town Jin Lu Kunshan Road, Suzhou City, Jiangsu Province, No. 18 215324 Patentee after: Kunshan Weisa Valve Co., Ltd. Address before: Jinxi town Jin Lu Kunshan Road, Suzhou City, Jiangsu Province, No. 18 215324 Patentee before: Kunshan Weisa Valve Co., Ltd. |