CN203627864U - High temperature flat gate valve - Google Patents
High temperature flat gate valve Download PDFInfo
- Publication number
- CN203627864U CN203627864U CN201320661188.5U CN201320661188U CN203627864U CN 203627864 U CN203627864 U CN 203627864U CN 201320661188 U CN201320661188 U CN 201320661188U CN 203627864 U CN203627864 U CN 203627864U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- flashboard
- valve rod
- coaxially
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000007789 sealing Methods 0.000 claims abstract description 32
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 229910002804 graphite Inorganic materials 0.000 claims description 7
- 239000010439 graphite Substances 0.000 claims description 7
- 239000010865 sewage Substances 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 150000001721 carbon Chemical class 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 4
- 238000012856 packing Methods 0.000 abstract 4
- 239000012535 impurity Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000003628 erosive effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Sliding Valves (AREA)
Abstract
The utility model relates to a high temperature flat gate valve. The high temperature flat gate valve comprises a valve body, a valve deck, a sealing gasket, a valve rod, a packing pressing plate, a flashboard, a support and valve seats. A medium flow channel is coaxially manufactured in the valve body in the transverse direction. The valve rod is coaxially installed in the middle of the valve deck in the longitudinal direction, and the packing pressing plate is coaxially installed between the valve rod and the valve deck in a sleeved mode. A packing box is coaxially arranged between the portion, at the lower end of the packing pressing plate, of the valve rod and the valve deck in a press fitting mode. The lower end of the valve rod extends into the valve body and coaxially and fixedly provided with the flashboard in the longitudinal direction, and the upper portion of the valve rod extends out the upper end of the valve deck and is provided with the support. The support is used for being connected with a hand wheel or a controller controlling lifting of the valve rod. The valve seats are symmetrically arranged in the portions, on the two transverse sides of the flashboard, of the valve body in a press fitting mode. A spring is arranged between each valve seat and the transverse contact surface of the valve body in a press fitting mode. The high temperature flat gate valve is simple in structure, scientific in design, reliable in sealing, easy to process, good in temperature resistance, flexible to operate, long in service life and high in sealing reliability, and can improve the sealing performance.
Description
Technical field
The utility model belongs to valve field, especially a kind of high-temp plane gate valve.
Background technique
At present, the valve seat of plate valve is realized the sealing between valve body by O shape rubber seal, due to rubber material non-refractory, has limited the use under worst hot case of plate valve.And flexible graphite material, thering is the best resistance to high temperature, can in-196 ℃ of-+650 ℃ of temperature ranges, use.
Model utility content
The purpose of this utility model is to overcome the deficiencies in the prior art part, and the high-temp plane gate valve of a kind of simple in structure, reasonable in design, good airproof performance, long service life is provided.
The utility model solves its technical problem and takes following technological scheme to realize:
A kind of high-temp plane gate valve, comprise valve body, valve gap, sealing gasket, valve rod, hold-down grid, flashboard, support and valve seat, in valve body, transverse uniaxial is shaped with medium runner, and valve body upper end is longitudinally coaxially fixed with a valve gap, is coaxially pressed with sealing gasket between valve body and valve gap; Longitudinally be coaxially installed with a valve rod at valve gap middle part, between valve rod and valve gap, coaxial sleeve is equipped with a hold-down grid, between the valve rod of hold-down grid lower end and valve gap, be coaxially pressed with a stuffing box, valve rod lower end is stretched into valve inner and is longitudinally coaxially fixed with a flashboard, valve rod top is stretched out valve gap upper end and a support is installed, this support is for being connected with handwheel or the controller of controlling valve rod lifting, it is characterized in that: in the valve body of described flashboard both lateral sides, all symmetry is pressed with a valve seat, between the lateral contact face of this valve seat and valve body, is pressed with a spring.
And the valve seat outer radial between described valve seat and valve body is provided with a flexible graphite sealing ring, a pressure ring is housed between this carbon seal ring and valve body, in the made spring groove of this pressure ring, spring is housed.
And between described valve gap and valve body, the multiple double-screw bolts of symmetrical installation and nut are connected, and are symmetrically installed with multipair double-screw bolt and nut in blind nut upper end.
And described valve body lower end is shaped with a sewage draining exit, this sewage draining exit engagement is provided with a blowdown plug.
And, pile-up welding hard alloy on the described flashboard surface of contact contacting with valve seat.
Advantage of the present utility model and good effect are:
1, this plate valve be equipped with on valve body sealing surface at valve seat together with flexible graphite sealing ring, utilize the feature that graphite is high temperature resistant, self lubricity is good, reach raising sealability, the object of high-temperature resistant medium, this structure is applicable to the plate valve of the various bores of various pressure.
2, when this plate valve is closed, valve seat metallic sealing section contacts with flashboard sealing surface, forms hard sealing together, high temperature resistant, wear-resistant, resistance to erosion.
3, this plate valve has self-cleaning property, long service life, and in the time that flashboard is opened, impurity, dirt on flashboard sealing surface are wiped off by two sealing surface of seats, reduce the frictional force between flashboard and valve seat, have reduced operation moment of torsion, make valve control more flexible.
4, simple in structure, design science, sealing is reliable, is easy to processing, and heat resistance is good, and improves sealability, flexible operation, long service life, sealing reliability is high.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is A portion partial structurtes enlarged diagram in Fig. 1.
Embodiment
Below in conjunction with accompanying drawing and by specific embodiment, the utility model is described in further detail, and following examples are descriptive, are not determinate, can not limit protection domain of the present utility model with this.
A kind of high-temp plane gate valve, comprise valve body 1, valve gap 6, sealing gasket 5, valve rod 4, hold-down grid 11, flashboard 2, support 7 and valve seat 3, as shown in Figure 1, in valve body, transverse uniaxial is shaped with medium runner, valve body upper end is longitudinally coaxially fixed with a valve gap, is coaxially pressed with sealing gasket between valve body and valve gap; Longitudinally be coaxially installed with a valve rod at valve gap middle part, between valve rod and valve gap, coaxial sleeve is equipped with a hold-down grid, valve rod can rotate flexibly in valve gap, lifting, between the valve rod of hold-down grid lower end and valve gap, be coaxially pressed with a stuffing box 12, this stuffing box effectively guarantees the sealing of valve rod; Valve rod lower end is stretched into valve inner and is longitudinally coaxially fixed with a flashboard, thus valve rod drive flashboard move up and down control valve unlatching, close; Valve rod top is stretched out valve gap upper end and a support is installed, and this support is for being connected with handwheel 8 or the controller (not shown) of controlling valve rod lifting.
Between described valve gap and valve body, the multiple double-screw bolts 13 of symmetrical installation and nut 14 are connected, and are symmetrically installed with multipair double-screw bolt 9 and nut 10 in blind nut upper end.
For the ease of clean, prevent that impurity, dirt from damaging valve, described valve body lower end is shaped with a sewage draining exit, and this sewage draining exit engagement is provided with a blowdown plug 15, needs clean this blowdown plug that makes to take off.
In order to guarantee valve resistance to high temperature, in the valve body of described flashboard both lateral sides, all symmetry is pressed with a valve seat, is pressed with a spring 18 between the lateral contact face of this valve seat and valve body, and continuing provides horizontal pretightening force to valve seat.
In order to guarantee the sealing between valve seat and valve body, valve seat outer radial between valve seat and valve body is provided with a flexible graphite sealing ring 17, one pressure ring 16 is housed between this carbon seal ring and valve body, in the made spring groove of this pressure ring, spring is housed, lasting pretightening force is provided, strengthens the sealing between valve seat and valve body.
Pile-up welding hard alloy on the flashboard surface of contact contacting with valve seat, valve seat metal covering contacts with the metal covering of flashboard, forms metal hard-sealing structure, high temperature resistant, wear-resistant, resistance to erosion.
The specific works process of this plate valve is as follows:
When valve closing, in the flexible graphite sealing ring pressure ring on valve seat external diameter under spring-force driven dual, be first close on the inclined-plane on valve seat hole wall and valve seat, along with the increase of pressure, flexible graphite sealing ring is compressed, forms the sealing between valve seat and valve body, reaches zero leakage.When in valve open process, flashboard moves up, and impurity, the dirt etc. on flashboard sealing surface wiped off by the sharp edge at the sealing surface edge on two valve seats, keeps the clean of flashboard, has reduced frictional force, thereby has reduced the operating torque of valve.
Although disclose for the purpose of illustration embodiment of the present utility model and accompanying drawing, but it will be appreciated by those skilled in the art that: not departing from the spirit and scope of the utility model and claims, various replacements, variation and modification are all possible, therefore, scope of the present utility model is not limited to embodiment and the disclosed content of accompanying drawing.
Claims (5)
1. a high-temp plane gate valve, comprise valve body, valve gap, sealing gasket, valve rod, hold-down grid, flashboard, support and valve seat, in valve body, transverse uniaxial is shaped with medium runner, and valve body upper end is longitudinally coaxially fixed with a valve gap, is coaxially pressed with sealing gasket between valve body and valve gap; Longitudinally be coaxially installed with a valve rod at valve gap middle part, between valve rod and valve gap, coaxial sleeve is equipped with a hold-down grid, between the valve rod of hold-down grid lower end and valve gap, be coaxially pressed with a stuffing box, valve rod lower end is stretched into valve inner and is longitudinally coaxially fixed with a flashboard, valve rod top is stretched out valve gap upper end and a support is installed, this support is for being connected with handwheel or the controller of controlling valve rod lifting, it is characterized in that: in the valve body of described flashboard both lateral sides, all symmetry is pressed with a valve seat, between the lateral contact face of this valve seat and valve body, is pressed with a spring.
2. high-temp plane gate valve according to claim 1, it is characterized in that: the valve seat outer radial between described valve seat and valve body is provided with a flexible graphite sealing ring, one pressure ring is housed between this carbon seal ring and valve body, in the made spring groove of this pressure ring, spring is housed.
3. high-temp plane gate valve according to claim 1, is characterized in that: between described valve gap and valve body, the multiple double-screw bolts of symmetrical installation and nut are connected, and are symmetrically installed with multipair double-screw bolt and nut in blind nut upper end.
4. high-temp plane gate valve according to claim 1, is characterized in that: described valve body lower end is shaped with a sewage draining exit, and this sewage draining exit engagement is provided with a blowdown plug.
5. high-temp plane gate valve according to claim 1, is characterized in that: pile-up welding hard alloy on the described flashboard surface of contact contacting with valve seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320661188.5U CN203627864U (en) | 2013-10-24 | 2013-10-24 | High temperature flat gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320661188.5U CN203627864U (en) | 2013-10-24 | 2013-10-24 | High temperature flat gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203627864U true CN203627864U (en) | 2014-06-04 |
Family
ID=50814345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320661188.5U Expired - Lifetime CN203627864U (en) | 2013-10-24 | 2013-10-24 | High temperature flat gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203627864U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109723847A (en) * | 2018-12-29 | 2019-05-07 | 上海凯工阀门股份有限公司 | A kind of knife gate valve |
-
2013
- 2013-10-24 CN CN201320661188.5U patent/CN203627864U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109723847A (en) * | 2018-12-29 | 2019-05-07 | 上海凯工阀门股份有限公司 | A kind of knife gate valve |
| CN109723847B (en) * | 2018-12-29 | 2024-05-31 | 上海凯工阀门股份有限公司 | Knife gate valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140604 |
|
| CX01 | Expiry of patent term |