CN206338432U - A kind of dual-seal flat gate valve - Google Patents
A kind of dual-seal flat gate valve Download PDFInfo
- Publication number
- CN206338432U CN206338432U CN201621463180.8U CN201621463180U CN206338432U CN 206338432 U CN206338432 U CN 206338432U CN 201621463180 U CN201621463180 U CN 201621463180U CN 206338432 U CN206338432 U CN 206338432U
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- valve seat
- valve
- seal
- dual
- flashboard
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Abstract
A kind of dual-seal flat gate valve, one of pre- tightening seal time valve seat of increase, realizes valve seat and flashboard dual-seal on the basis of conventional panel Gate-valve sealing.Main valve seat produces a sealing force for pressing to flashboard under the thrust of medium, forms first of sealing, and secondary valve seat presses to ram seal face under the thrust of butterfly spring, forms second sealing.When main valve seat is leaked in long-term use by medium erosion corrosion, secondary valve seat, which is appointed, can so play sealing function, it is ensured that the sealing of valve.
Description
Technical field
The utility model is specifically related to valve technology field, and in particular to a kind of dual-seal flat gate valve.
Background technology
Flat gate valve is a kind of pipeline valve, is mainly used in long-distance transport pipes, tank field, and its sealing reliability, stability will
Directly affect transport and the equipment safety of crude oil.Therefore lifting flat gate valve sealing property and service life are quite important.
Be during dual-seal flat gate valve for solve the easy damage leakage of current flat panel sealing surface of the discharge gate need to often safeguard and
Research and development.Conventional panel gate valve easily causes sealing surface wear spot corrosion to cause seal failure leakage not under the washing away of medium
Normal cutting action can be played, there is very big potential safety hazard.
The content of the invention
It is of the present utility model to provide a kind of high-performance gate valve in order to solve the deficiencies in the prior art.
The utility model use technical solution be：A kind of dual-seal flat gate valve, including valve body, valve rod and
Operating mechanism, described valve body, which is provided with bonnet, described valve body, is additionally provided with valve seat, and described valve rod front end is provided with flashboard,
Runner is provided with the middle of described valve body, described runner upper and lower is respectively equipped with upper cavity and lower chamber, described valve seat bag
Main valve seat is included, seals and coordinates between described main valve seat and flashboard, described main valve seat bottom is additionally provided with time valve seat, described secondary valve
Seat is located between flashboard and valve body, and elastic component is additionally provided between described secondary valve seat and valve body, close between described secondary valve seat and flashboard
Envelope coordinates.
Elastic component between described secondary valve seat and valve body is butterfly spring, is formed between described secondary valve seat and main valve seat and valve body
Mounting groove, described butterfly spring is located in mounting groove.
Described main valve seat bottom is provided with groove, and described secondary valve seat is provided with the boss being adapted to groove, and described is convex
It is engaged by clamping between platform and groove.
Described secondary seat bottom portion is additionally provided with limited block, described butterfly spring and the spacing cooperation of limited block.
The front end of described valve rod is additionally provided with stem head, and described flashboard is arranged on stem head.
First seal is additionally provided with respectively on described main valve seat and the contact surface of time valve seat and flashboard.
Second seal is provided between described main valve seat and secondary valve seat.
The beneficial effects of the utility model are：The utility model provides a kind of dual-seal flat gate valve, routinely flat
One of pre- tightening seal time valve seat of increase, realizes valve seat and flashboard dual-seal on the basis of plate Gate-valve sealing.Main valve seat is in medium
Thrust under produce a sealing force for pressing to flashboard, form first of sealing, secondary valve seat is under the thrust of butterfly spring
Ram seal face is pressed to, second sealing is formed.When main valve seat is leaked in long-term use by medium erosion corrosion,
Secondary valve seat, which is appointed, can so play sealing function, it is ensured that the sealing of valve.
Brief description of the drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model valve seat construction schematic diagram.
1- valve bodies in figure, 2- valve rods, 3- flashboards, 4- main valve seats, 5- valve seat, 6- elastic components, 7- stem heads, 8- first is close
Sealing, 9- second seals, 11- bonnets, 12- runners, 13- upper cavities, 14- lower chambers, 41- grooves, 51- mounting grooves, 52- is convex
Platform, 53- limited blocks.
Embodiment
The utility model is further described in conjunction with Fig. 1, Fig. 2, a kind of dual-seal flat gate valve, including valve body
1st, valve rod 2 and operating mechanism, described valve body 1, which is provided with bonnet 11, described valve body 1, is additionally provided with valve seat, described valve
The front end of bar 2 is provided with flashboard 3, and the front end of described valve rod 2 is additionally provided with stem head 7, and described flashboard 3 is arranged on stem head 7.Institute
Runner 12 is provided with the middle of the valve body 1 stated, the described upper and lower of runner 12 is respectively equipped with upper cavity 13 and lower chamber 14, described
Valve seat includes main valve seat 4, seals and coordinates between described main valve seat 4 and flashboard 3, the described bottom of main valve seat 4 is additionally provided with time valve seat
5, described secondary valve seat 5 is located between flashboard 3 and valve body 1, and elastic component 6 is additionally provided between described secondary valve seat 5 and valve body 1, described
Secondary valve seat 5 and flashboard 3 between seal coordinate.Elastic component 6 between described secondary valve seat 5 and valve body 1 is butterfly spring, described secondary valve seat
Mounting groove 51 is formed between 5 and main valve seat 4 and valve body 1, described butterfly spring is located in mounting groove 51.The described bottom of main valve seat 4
Provided with groove 41, described secondary valve seat 5 is provided with the boss 52 being adapted to groove 41, clamping between described boss 52 and groove 41
Coordinate.The described bottom of secondary valve seat 5 is additionally provided with limited block 53, described butterfly spring and the spacing cooperation of limited block 53.
The utility model realizes valve by increasing pre- tightening seal time valve seat together on the basis of conventional panel Gate-valve sealing
Seat and flashboard dual-seal.Main valve seat produces a sealing force for pressing to flashboard under the thrust of medium, forms first of sealing.
Pretension time valve seat presses to ram seal face under the thrust of butterfly spring, forms second sealing.When main valve seat is long-term
When being leaked in use by medium erosion corrosion, secondary valve seat, which is appointed, can so play sealing function, it is ensured that the sealing of valve.
Described main valve seat 4 and time valve seat 5 with being additionally provided with first seal 8 respectively on the contact surface of flashboard 3.Described master
Second seal 9 is provided between valve seat 4 and secondary valve seat 5.
The above is only preferred embodiment 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 the utility model thinking belong to protection domain of the present utility model.It should refer to
Go out, for those skilled in the art, some improvement under the premise of the utility model principle is not departed from and
Retouching, these improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (7)
1. a kind of dual-seal flat gate valve, including valve body（1）, valve rod（2）And operating mechanism, described valve body（1）On set
There is bonnet（11）, described valve body（1）Inside it is additionally provided with valve seat, described valve rod（2）Front end is provided with flashboard（3）, it is characterised in that
Described valve body（1）Centre is provided with runner（12）, described runner（12）Upper and lower is respectively equipped with upper cavity（13）And lower chamber
（14）, described valve seat includes main valve seat（4）, described main valve seat（4）With flashboard（3）Between seal coordinate, described main valve seat
（4）Bottom is additionally provided with time valve seat（5）, described secondary valve seat（5）Positioned at flashboard（3）With valve body（1）Between, described secondary valve seat
（5）With valve body（1）Between be additionally provided with elastic component（6）, described secondary valve seat（5）With flashboard（3）Between seal coordinate.
2. a kind of dual-seal flat gate valve according to claim 1, it is characterised in that described secondary valve seat（5）With valve
Body（1）Between elastic component（6）For butterfly spring, described secondary valve seat（5）With main valve seat（4）And valve body（1）Between be formed with mounting groove
（51）, described butterfly spring is positioned at mounting groove（51）It is interior.
3. a kind of dual-seal flat gate valve according to claim 1, it is characterised in that described main valve seat（4）Bottom
Provided with groove（41）, described secondary valve seat（5）It is provided with and groove（41）The boss of adaptation（52）, described boss（52）With it is recessed
Groove（41）Between be engaged by clamping.
4. a kind of dual-seal flat gate valve according to claim 2, it is characterised in that described secondary valve seat（5）Bottom
It is additionally provided with limited block（53）, described butterfly spring and limited block（53）It is spacing to coordinate.
5. a kind of dual-seal flat gate valve according to claim 1, it is characterised in that described valve rod（2）Front end
It is additionally provided with stem head（7）, described flashboard（3）Installed in stem head（7）On.
6. a kind of dual-seal flat gate valve according to claim 1, it is characterised in that described main valve seat（4）With it is secondary
Valve seat（5）With flashboard（3）Contact surface on be additionally provided with first seal respectively（8）.
7. a kind of dual-seal flat gate valve according to claim 1, it is characterised in that described main valve seat（4）With it is secondary
Valve seat（5）Between be provided with second seal（9）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621463180.8U CN206338432U (en) | 2016-12-29 | 2016-12-29 | A kind of dual-seal flat gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621463180.8U CN206338432U (en) | 2016-12-29 | 2016-12-29 | A kind of dual-seal flat gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206338432U true CN206338432U (en) | 2017-07-18 |
Family
ID=59303140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621463180.8U Active CN206338432U (en) | 2016-12-29 | 2016-12-29 | A kind of dual-seal flat gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206338432U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110906022A (en) * | 2019-12-06 | 2020-03-24 | 浙江宣达环境科技股份有限公司 | U-shaped gate valve |
-
2016
- 2016-12-29 CN CN201621463180.8U patent/CN206338432U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110906022A (en) * | 2019-12-06 | 2020-03-24 | 浙江宣达环境科技股份有限公司 | U-shaped gate valve |
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