CN100342162C - Single open double seal parallel type gate valve - Google Patents
Single open double seal parallel type gate valve Download PDFInfo
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- CN100342162C CN100342162C CNB2004100209422A CN200410020942A CN100342162C CN 100342162 C CN100342162 C CN 100342162C CN B2004100209422 A CNB2004100209422 A CN B2004100209422A CN 200410020942 A CN200410020942 A CN 200410020942A CN 100342162 C CN100342162 C CN 100342162C
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- valve
- flashboard
- valve rod
- rod
- hole
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Abstract
The present invention relates to a single opening double seal parallel type flashboard valve belonging to the technical field of the F16K in the International Patent Classification table. The present invention comprises an outer casing of a valve, a valve rod arranged in the inner cavity of the casing and flashboards arranged in the inner cavity of the casing, wherein the casing is composed of a valve body, a valve cover, a connection body and a hand wheel; the hand wheel drives a nut of the valve rod; the valve rod is driven by the nut of the valve rod; the valve rod drives the flashboards by trapezoid threads; a force fixing rod is arranged at the bottom of the inner cavity of the valve body; the flashboard system is composed of the two symmetrical flashboards which are combined. T-shaped grooves are arranged at the upper parts of the flashboards; the T-shaped grooves are fixedly connected with the valve rod; large through holes which are same with flowing holes at both ends of the valve body are arranged at the middles of the flashboards; a wedge type sliding block groove is arranged at the upper part of each large through hole; the lower part of each larger through hole is radically communicated with a small through hole. The present invention solves the problems of lower-voltage seal and manual pressing; the present invention has the characteristics of novel design, unique appearance, small size, light weight, flexible opening, labor saving, etc., and is suitable for pipelines delivering fluid media in petroleum industry, chemical industry and other industry.
Description
Technical field
The present invention relates to a kind of parallel type gate valve, particularly relate to a kind of single open-double seal parallel gate valve, it is improvement to existing flap type structure, belong to the F16K technical field in the International Patent Classification (IPC), be suitable on the high, medium and low voltage pipeline of oil, chemical industry and other industry conveyance fluid medium, doing when regulating flow, to use.
Background technique
At present, the valve kind that is used for doing on the pipeline stopping MEDIA FLOW is more: but a kind of be to have spherical shapes straight tackling liquid stream and the ball valve of closing liquid stream, a kind of is to fall discoid valve member from above to isolate the gate valve of liquid stream in the pipeline with respect to liquid stream, and also having a kind of is the unidirectional stop valve that can prevent adverse current.The Chinese invention patent application has provided a kind of " flap type " for No. 94114087.3, it is provided with the valve seat that is provided with in stream, the valve seat clutch is to block stream or to regulate the valve member of flow and valve seat and valve member maintenance valve body within it therewith, valve seat has certain inclination angle with respect to the liquid flow path direction, valve member has the flat board and the slotted hole that is located on this flat board back as matrix, valve member keeps the little first inclination angle, inclination angle with respect to the ratio valve seat of liquid flow path direction, and make it on the big direction of the above-mentioned change of inclination angle just, to be supported on the operating handle rotationally, by means of the operation of operating handle, with an end in contact of valve seat after be that fulcrum rotates further with this end, near valve seat or connect airtight on above-mentioned valve seat.China's utility model patent has also provided " a kind of parallel type gate valve " for No. 95218045.6, be characterized in that flashboard is the parallel type flashboard, the flashboard lower end is provided with non-circular medium runner hole, and flow curve is linear straight line, closely contacts with the flashboard seat all the time with full open state lower flashboard in throttling.All there is certain deficiency in above-mentioned these prior aries: need big operational torque on the structure that has, thereby be not suitable for big specification valve, the shortcoming that fluid resistance is big; It is big that the structure up stroke that has becomes, and the switching time is long to be unsuitable for rapidly opened and closedly, and makes difficulty during small-bore occasion; The medium when opening that also has is washed away sealing surface continuously, sealing surface is very easily washed away damage by medium, especially former dull and stereotyped gate valve individual event sealing can not be finished the closing operation of valve with external force, and rely on the pressure of MEDIA FLOW to finish, cause to require the machining accuracy height, working life is short and increased cost of production.
Summary of the invention
The objective of the invention is to overcome the prior art above shortcomings, improve, provide a kind of novel single open-double seal parallel gate valve by research.This single open-double seal parallel gate valve is in conjunction with the chief of all kinds of valves, the principle of Wedge gate valve and the structure of flap type have been adopted, use and the same opening/shutting mode of existing valve, salable inlet side and not-go-end medium have overcome the shortcoming that existing dull and stereotyped valve only seals one side simultaneously.
The technical solution that the present invention provides is: this single open-double seal parallel gate valve, include one by valve body, valve gap, the external form housing of the valve that connecting body and handwheel are formed, be provided with valve rod and flashboard in the housing inner chamber, wherein handwheel drives Stem Mut, Stem Mut drives valve rod, valve rod drives flashboard by trapezoidal thread, be characterized in being provided with a constant rod in the bottom of body cavity, described flashboard is not a whole flashboard of the prior art, but former whole flashboard is divided into two, remerge after separately separately making from the centre and be assembled together, be that flashboard system among the present invention is combined by two flashboards of symmetry, the top of the flashboard after the combination is provided with a tee-slot, this tee-slot is used for being fixedly connected with valve rod, the middle part of the flashboard after combination is provided with a large through-hole identical with the discharge orifice at valve body two ends, and the top of this large through-hole is provided with a Wedge slider groove, and the below of this large through-hole is connected with a little latus rectum.When the flashboard after the combination goes downwards to closed position, the body cavity bottom is gone up the constant rod that is provided with and is inserted the little latus rectum of flashboard below, and the Wedge slider that passes in large through-hole and the Wedge slider groove intersects, produce a reverse power, under the effect on inclined-plane, make flashboard after the combination parallel to the two sides spreading, the sealing surface of flashboard and the sealing surface of valve seat match, thereby finish the airtight of valve.
For better finishing purpose of the present invention, improve the sealability and the working life of valve, all surfacing has tungsten cobalt chromium Hardmetal materials layer on the sealing surface of the sealing surface of flashboard and valve seat.
For better finishing purpose of the present invention, guarantee that flashboard is indeformable, need carry out special type processing to the separating surface of flashboard, the separating surface that is about to flashboard is processed into semicircle and inclined-plane, and surfacing has tungsten cobalt chromium Hardmetal materials layer on the inclined-plane.
For better finishing purpose of the present invention, under the condition of the minimum wall thickness (MINI W.) that guarantees valve body, save material and reduce production costs, the housing external form of this single open-double seal parallel gate valve that provides is the shape of circular upper part and square lower part.
Compared with prior art, this single open-double seal parallel gate valve that the present invention provides is at the shortcoming of existing product, to separate in the middle of the flashboard, become two way sealed, thoroughly solved low pressure seal and artificially can not afterburning this difficult problem, have external form uniqueness, modern design, volume little, in light weight, open characteristics such as flexible, laborsaving, its beneficial effect is:
1. high temperature high voltage resistant.This valve has adopted the exotic material making, and wherein valve body, valve gap are 35CrMo, and valve seat is 1Cr13 and surfacing nickel-base alloy, and flashboard is 35CrMo and surfacing cobalt base alloy, and valve rod is 2Cr13, and Stem Mut is a H62 brass;
2. unidirectional keying, two way sealed.Unidirectional keying is same method for opening and closing with existing valve promptly, and it is simple to operate.Two way sealed promptly seals inlet side and not-go-end medium simultaneously, has overcome the shortcoming that existing similar valve can only seal one side;
3. good seal performance, long service life.On the sealing surface of this valve flashboard and the sealing surface of valve seat all surfacing tungsten cobalt chromium Hardmetal materials layer is arranged.
Description of drawings
A kind of embodiment's that Fig. 1 provides for the present invention structural representation;
Fig. 2 is the schematic representation of the flashboard part among Fig. 1;
Fig. 3 is the A--A view among Fig. 2.
Number in the figure: 1. constant rod, 2. flashboard, 3. Wedge slider, 4. valve rod, 5. valve seat, 6. valve body, 7. valve gap, 8. connecting body, 9. Stem Mut, 10. handwheel, 11. tee-slots, 12. Wedge slider grooves, 13. large through-holes, 14. little latus rectums.
Embodiment
Below in conjunction with accompanying drawing concrete technological scheme of the present invention and working procedure are described further:
The structure situation of the single open-double seal parallel gate valve that Fig. 1 provides for the present invention, wherein valve body, valve gap are 35CrMo, and valve seat is 1Cr13 and surfacing nickel-base alloy, and flashboard is 35CrMo and surfacing cobalt base alloy, and valve rod is 2Cr13, Stem Mut is a H62 brass.This as seen from the figure single open-double seal parallel gate valve, include one by valve body 6, valve gap 7, the external form housing of the circular upper part and square lower part shape of the valve that connecting body 8 and handwheel 10 are formed, be provided with valve rod 4 and flashboard 2 in the housing inner chamber, wherein handwheel 10 drives Stem Mut 9, Stem Mut 9 drives valve rod 4, valve rod 4 drives flashboard 2 by trapezoidal thread, be characterized in being provided with a constant rod 1 in the bottom of valve body 6 inner chambers, described flashboard 2 is not a whole flashboard of the prior art, but former whole flashboard is divided into two, remerge after separately separately making from the centre and be assembled together, promptly the flashboard among the present invention 2 is that two flashboards by symmetry combine.
Fig. 2 is the structure situation of flashboard 2 after the combination in the single open-double seal parallel gate valve, Fig. 3 is the A-A sectional view among Fig. 2, the top of the flashboard 2 after the combination is provided with a tee-slot 11 as seen from the figure, this tee-slot 11 is used for being fixedly connected with valve rod 4, the middle part of the flashboard 2 after combination is provided with a large through-hole 13 identical with the discharge orifice at valve body 6 two ends, the top of this large through-hole 13 is provided with a Wedge slider groove 12, and the below of this large through-hole 13 is connected with a little latus rectum 14.
When closing, clockwise rotate handwheel 10 earlier, handwheel 10 drives Stem Mut 9, Stem Mut 9 drives valve rod 4, it is descending that valve rod 4 drives flashboard 2 by trapezoidal thread, when flashboard 2 goes downwards to closed position, the constant rod 1 that is provided with on valve body 6 intracavity bottoms inserts the little latus rectum 14 of flashboard 2 belows, and it is crossing with the Wedge slider 3 in the Wedge slider groove 12 to pass large through-hole 13, produce a reverse power, under the effect on inclined-plane, make flashboard 2 after the combination parallel to the two sides spreading, the sealing surface of the sealing surface of flashboard 2 and valve seat 5 matches, thereby finishes the airtight of valve;
During unlatching, rotate counterclockwise handwheel 10 earlier, handwheel 10 drives Stem Mut 9, and Stem Mut 9 drives valve rod 4, and it is up that valve rod 4 drives flashboard 2 by trapezoidal thread, when flashboard 2 is up to the enable possition, the constant rod 1 that is provided with on valve body 6 intracavity bottoms breaks away from the Wedge slider 3 in the Wedge slider groove 12 gradually, slowly withdraws from from the large through-hole 13 of flashboard 2 and little latus rectum 14, and large through-hole 13 communicates with the valve pocket on valve body 6 both sides this moment, promptly the discharge orifice with the valve body two ends communicates, thereby finishes the unlatching of valve.
Claims (4)
1. single open-double seal parallel gate valve, include one by valve body, valve gap, the valve external form housing that connecting body and handwheel are formed, be provided with valve rod and flashboard in the housing inner chamber, wherein handwheel drives Stem Mut, Stem Mut drives valve rod, valve rod drives flashboard by trapezoidal thread, it is characterized in that being provided with a constant rod in the bottom of body cavity, described flashboard system is combined by two flashboards of symmetry, the top of the flashboard after the combination is provided with one and is used for the tee-slot that is fixedly connected with valve rod, the middle part of the flashboard after combination is provided with a large through-hole identical with the discharge orifice at valve body two ends, the top of this large through-hole is provided with a Wedge slider groove, the below of this large through-hole is connected with a little latus rectum, when the flashboard after the combination goes downwards to closed position, the body cavity bottom is gone up the constant rod that is provided with and is inserted the little latus rectum of flashboard below, and the Wedge slider that passes in large through-hole and the Wedge slider groove intersects, make flashboard after the combination parallel to the two sides spreading, the sealing surface of flashboard and the sealing surface of valve seat match.
2. single open-double seal parallel gate valve according to claim 1 is characterized in that on the sealing surface of the sealing surface of flashboard and valve seat all surfacing has tungsten cobalt chromium Hardmetal materials layer.
3. single open-double seal parallel gate valve according to claim 1 and 2 is characterized in that the separating surface of flashboard is processed into semicircle and inclined-plane, and surfacing has tungsten cobalt chromium Hardmetal materials layer on the inclined-plane.
4. single open-double seal parallel gate valve according to claim 1, the housing external form that it is characterized in that this single open-double seal parallel gate valve is the shape of circular upper part and square lower part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100209422A CN100342162C (en) | 2004-07-09 | 2004-07-09 | Single open double seal parallel type gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100209422A CN100342162C (en) | 2004-07-09 | 2004-07-09 | Single open double seal parallel type gate valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1594948A CN1594948A (en) | 2005-03-16 |
| CN100342162C true CN100342162C (en) | 2007-10-10 |
Family
ID=34663293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100209422A Expired - Fee Related CN100342162C (en) | 2004-07-09 | 2004-07-09 | Single open double seal parallel type gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100342162C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102454802A (en) * | 2010-10-21 | 2012-05-16 | 江苏省鑫通阀门制造有限公司 | Single-top and dual-pressure sealing device for welding gate valve |
| CN109268521B (en) * | 2018-11-01 | 2019-10-11 | 江苏圣泰阀门有限公司 | A kind of double plate flap types of heavy caliber |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3656707A (en) * | 1970-04-16 | 1972-04-18 | Marotta Scientific Controls | Poppet valve assembly with straight-through flow |
| CN2035829U (en) * | 1988-09-02 | 1989-04-12 | 山东牟平化肥厂 | Sealing-sleeve type gate valve |
| US4971098A (en) * | 1989-12-06 | 1990-11-20 | Cooper Industries, Inc. | Valve and improved seat seal therefor |
| JPH08145201A (en) * | 1994-11-16 | 1996-06-07 | Kubota Corp | Gate valve |
| CN2234023Y (en) * | 1995-06-20 | 1996-08-28 | 张继刚 | Gate valve with expandable gate plate |
-
2004
- 2004-07-09 CN CNB2004100209422A patent/CN100342162C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3656707A (en) * | 1970-04-16 | 1972-04-18 | Marotta Scientific Controls | Poppet valve assembly with straight-through flow |
| CN2035829U (en) * | 1988-09-02 | 1989-04-12 | 山东牟平化肥厂 | Sealing-sleeve type gate valve |
| US4971098A (en) * | 1989-12-06 | 1990-11-20 | Cooper Industries, Inc. | Valve and improved seat seal therefor |
| JPH08145201A (en) * | 1994-11-16 | 1996-06-07 | Kubota Corp | Gate valve |
| CN2234023Y (en) * | 1995-06-20 | 1996-08-28 | 张继刚 | Gate valve with expandable gate plate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1594948A (en) | 2005-03-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: CUI HONGJIE; APPLICANT Free format text: FORMER OWNER: CUI HONGJIE Effective date: 20070323 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20070323 Address after: 121311 Liaoning Province, Beining City qingduizi town of Jinzhou high pressure valve factory Applicant after: Cui Hongjie Co-applicant after: Liu Juqing Co-applicant after: Bao Nanxi Address before: 121311 Liaoning Province, Beining City qingduizi town of Jinzhou high pressure valve factory Applicant before: Cui Hongjie |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20050316 Assignee: JINZHOU HIGH PRESSURE VALVE MANUFACTURING CO., LTD. Assignor: Cui Hongjie|Liu Juqing|Bao Nanxi Contract record no.: 2013210000027 Denomination of invention: Single open double seal parallel type gate valve Granted publication date: 20071010 License type: Exclusive License Record date: 20130410 |
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| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071010 Termination date: 20140709 |
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| EXPY | Termination of patent right or utility model |