CN206361172U - A kind of wear-resistant flat gate valve - Google Patents
A kind of wear-resistant flat gate valve Download PDFInfo
- Publication number
- CN206361172U CN206361172U CN201621345750.3U CN201621345750U CN206361172U CN 206361172 U CN206361172 U CN 206361172U CN 201621345750 U CN201621345750 U CN 201621345750U CN 206361172 U CN206361172 U CN 206361172U
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- Prior art keywords
- valve
- valve seat
- flashboard
- ring
- sealing
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Abstract
The utility model is related to a kind of wear-resistant flat gate valve, and valve seat passes through the twice O-ring of radially inner and outer both sides；Valve seat inner circle transverse uniaxial in the side of contact flashboard is embedded with a sealing inner ring；One spring is installed between valve seat and the end face of valve body contact, a stopper slot is left between the valve seat and sealing inner ring of rams contact, one of rubber triangle circle, the soft seal together with flashboard holding contact formation of rubber triangle circle are inlayed in the stopper slot.The utility model is good using triangle rubber seal elasticity, good toughness, the advantage easily compensated after scuffing, overcome completely because soft seal ring scratch caused by leak occur, and use combining structure, triangle circle is big with installing groove contact surface, is difficult blowout, improves the sealing property and reliability of valve.
Description
Technical field
The utility model belongs to for oil, and medium flow field use is blocked in the place such as natural gas, the discharging of chemical industry polymeric kettle, is related to flat
Plate gate valve, especially a kind of wear-resistant flat gate valve.
Background technology
At present, the structure of flat gate valve valve seat is steel sealing plus one of RPTFE soft seal ring firmly, reaches gas medium work
Zero leakage sealing under condition.The shortcoming of prior art is：In high natural gas containing sand or medium during high thing hard containing shape, RPTFE is close
Seal ring poor flexibility, can not be compensated after scuffing, cause the interior leakage of valve.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art part there is provided a kind of wear-resistant flat gate valve, if
The flat gate valve of meter science, dependable performance, it is adaptable to the mixture condition of high natural gas containing sand and hard debris.
The utility model solves its technical problem and takes following technical scheme to realize：
A kind of wear-resistant flat gate valve, including valve body, bonnet, O-ring, valve seat, flashboard, valve rod, valve body are coaxial with bonnet
Connect and by seal with O ring, valve body is provided with valve rod, in valve with being formed with longitudinally coaxial axis hole in the middle part of bonnet in axis hole
The lower end of the valve rod in internal portion is fixed with a flashboard, with the horizontal contact jaw in flashboard both sides in the horizontal medium channel of valve inner
Two valve seats are symmetrically installed between face, it is characterised in that：Valve seat passes through the twice O-ring of radially inner and outer both sides；
Valve seat inner circle transverse uniaxial in the side of contact flashboard is embedded with a sealing inner ring；In valve seat and valve body contact
One spring is installed between end face, a stopper slot is left between the valve seat and sealing inner ring of rams contact, in the stopper slot
Inlay one of rubber triangle circle, the soft seal together with flashboard holding contact formation of rubber triangle circle.
Moreover, the end face pile-up welding hard alloy layer of the sealing inner ring and rams contact, with one layer of hard sealing of flashboard formation.
Moreover, the valve rod upper end above bonnet is coaxially installed with the valve rod above a handwheel, handwheel by valve stem nut
End is provided with valve stem boot.
Moreover, valve body lower end is formed with sewage draining exit and is provided with a blowdown plug.
Moreover, sealing inner ring is with valve seat, the O-ring together with ensures mutual sealing.
Advantage of the present utility model and good effect are：
1st, the sealing inner ring pile-up welding hard alloy on valve seat, it is dual close with the hard sealing of triangle rubber parts composition, soft seal
Envelope, wear-resistant, sealing property zero leakage.
2nd, sealing inner ring and outer seat are combined, form the installing groove of triangle seal, easy processing, good economy performance.
Triangle circle is big with installing groove contact surface, is difficult blowout, and reliability is high.
3rd, the utility model is good using triangle rubber seal elasticity, good toughness, the advantage easily compensated after scuffing, completely
Overcome to leak in caused by soft seal ring is scratched and occur, and use combining structure, triangle circle and installing groove contact surface
Greatly, blowout is difficult, the sealing property and reliability of valve is improved.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the partial enlarged drawing of encircled portion in Fig. 1.
Reference：
1 valve body, 2 blowdown plugs, 3 valve seats, 4 flashboards, 5 bonnets, 6 valve rods, 7 valve stem nuts, 8 handwheels, 9 valve stem boots,
10O shape circles, 11 springs, 12 sealing inner ring, 13 triangle circles.
Embodiment
Below in conjunction with the accompanying drawings and the utility model is described in further detail by specific embodiment, following examples are to retouch
The property stated, be not limited, it is impossible to limit protection domain of the present utility model with this.
A kind of wear-resistant flat gate valve, including valve body 1, bonnet 5, O-ring 10, valve seat 3, flashboard 4, valve rod 6, valve body and valve
Lid is coaxially connected and by seal with O ring, and valve body is provided with valve rod with being formed with longitudinally coaxial axis hole in the middle part of bonnet in axis hole
6, the valve rod upper end above bonnet is coaxially installed with a handwheel 8 by valve stem nut 7, and handwheel control valve rod is rotated, handwheel
The valve stem end of top is provided with valve stem boot；
A flashboard 4 is fixed with the lower end of the valve rod of valve inner, in the horizontal medium channel of valve inner and flashboard
Both sides are symmetrically installed with two valve seats 3 between laterally contacting end face；
Sewage draining exit is formed with valve body lower end and a blowdown plug 2 is installed, for clearing up body cavity.
Innovative point of the present utility model is：
Valve seat passes through the twice O-ring 10 of radially inner and outer both sides, it is ensured that the sealing of valve seat and valve body；
Valve seat inner circle transverse uniaxial in the side of contact flashboard is embedded with a sealing inner ring 12, and sealing inner ring is led to valve seat
The end face pile-up welding hard alloy layer that one of O-ring ensures mutual sealing, the sealing inner ring and rams contact is crossed, with flashboard shape
Into one layer of hard sealing；
Be provided between valve seat and the end face of valve body contact a spring 11 keep valve seat pretightning force, with rams contact
A stopper slot is left between valve seat and sealing inner ring, one of rubber triangle circle 13 is inlayed in the stopper slot, and in the work of spring
Keep contacting with lower rubber triangle circle and flashboard, form one of soft seal.
When valve is closed, it is close that the rubber triangle circle on sealing surface of seat is close to flashboard under spring force, first
On front cover, with the increase of pressure, valve seat metallic sealing section is contacted with ram seal face, forms hard sealing together, soft close together
Dual-seal is sealed, zero leakage is reached.When in valve opening procedure, flashboard is moved up, impurity, dirt on ram seal face etc.
Wiped off by the hard sealing surface on two valve seats, it is ensured that triangle circle is not scratched；Triangle circle exists with trench contact face, is difficult
Blowout, simultaneously because the seal pressure of triangle rubber ring is small, reduces spring, so as to reduce the operating torque of valve
Although disclosing embodiment of the present utility model and accompanying drawing for the purpose of illustration, those skilled in the art can be with
Understand：Do not departing from the utility model and spirit and scope of the appended claims, it is various replace, change and modifications all be can
Can, therefore, scope of the present utility model is not limited to embodiment and accompanying drawing disclosure of that.
Claims (5)
1. a kind of wear-resistant flat gate valve, including valve body, bonnet, O-ring, valve seat, flashboard, valve rod, valve body coaxially connect with bonnet
Connect and by seal with O ring, valve body is provided with valve rod, in valve body with being formed with longitudinally coaxial axis hole in the middle part of bonnet in axis hole
The lower end of internal valve rod is fixed with a flashboard, and laterally end face is contacted with flashboard both sides in the horizontal medium channel of valve inner
Between be symmetrically installed with two valve seats, it is characterised in that：Valve seat passes through the twice O-ring of radially inner and outer both sides；In contact lock
The valve seat inner circle transverse uniaxial of the side of plate is embedded with a sealing inner ring；One is provided between valve seat and the end face of valve body contact
Spring, leaves a stopper slot between the valve seat and sealing inner ring of rams contact, one of rubber triangle is inlayed in the stopper slot
Shape circle, the soft seal together with flashboard holding contact formation of rubber triangle circle.
2. wear-resistant flat gate valve according to claim 1, it is characterised in that：The end of the sealing inner ring and rams contact
Surface build-up welding hard alloy layer, with one layer of hard sealing of flashboard formation.
3. wear-resistant flat gate valve according to claim 1, it is characterised in that：Valve rod upper end above bonnet passes through valve
The valve stem end that stem nut is coaxially installed with above a handwheel, handwheel is provided with valve stem boot.
4. wear-resistant flat gate valve according to claim 1, it is characterised in that：Valve body lower end is formed with sewage draining exit and installed
There is a blowdown plug.
5. wear-resistant flat gate valve according to claim 1, it is characterised in that：Sealing inner ring O shapes together with valve seat
Circle ensures mutual sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621345750.3U CN206361172U (en) | 2016-12-09 | 2016-12-09 | A kind of wear-resistant flat gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621345750.3U CN206361172U (en) | 2016-12-09 | 2016-12-09 | A kind of wear-resistant flat gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206361172U true CN206361172U (en) | 2017-07-28 |
Family
ID=59373745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621345750.3U Active CN206361172U (en) | 2016-12-09 | 2016-12-09 | A kind of wear-resistant flat gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206361172U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109854767A (en) * | 2019-02-19 | 2019-06-07 | 成都乘风阀门有限责任公司 | Compound seal valve seat construction flat gate valve |
-
2016
- 2016-12-09 CN CN201621345750.3U patent/CN206361172U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109854767A (en) * | 2019-02-19 | 2019-06-07 | 成都乘风阀门有限责任公司 | Compound seal valve seat construction flat gate valve |
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| GR01 | Patent grant |