CN204083309U - The special blade type gate valve of desulphurization denitration - Google Patents
The special blade type gate valve of desulphurization denitration Download PDFInfo
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- CN204083309U CN204083309U CN201420525113.9U CN201420525113U CN204083309U CN 204083309 U CN204083309 U CN 204083309U CN 201420525113 U CN201420525113 U CN 201420525113U CN 204083309 U CN204083309 U CN 204083309U
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- valve seat
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Abstract
The utility model relates to the special blade type gate valve of a kind of desulphurization denitration, and comprise valve body, valve seat, flashboard, valve rod, valve gap, support, handwheel, flashboard lower end is shaped with blade type inclined-plane; Mainly valve seat adopts and imports and exports two floating valve seat, valve seat and flashboard fitting surface pile-up welding hard alloy, make the hard sealing surface of valve seat, circular groove that is vertical and sealing surface is shaped with in the hard sealing surface neutral position of valve seat, abrasive rubber is poured in this circular groove, abrasive rubber surface slightly protrudes from the hard sealing surface of valve seat, makes valve seat soft sealing face; The valve pocket two bottom sides of valve body is shaped with the symmetrical storage slag chamber lower than valve seat periphery, and install slag-off valve in the bottom in storage slag chamber, the cleaning hose being communicated with valve pocket is installed in valve body both sides; Pilot seal plate is set between valve gap and valve body, in the middle of this pilot seal plate, is shaped with the pilot seal groove coordinated with flashboard motive sealing.There is the features such as sealability is reliable, wear-resisting property is good, be applicable to flue gas desulphurization denitration pipeline special gate valve.
Description
Technical field
The utility model belongs to valve field, specifically about a kind of blade type gate valve.The utility model is applicable to flue gas desulphurization denitration pipeline special gate valve.
Background technique
In flue gas desulphurization denitration pipe-line system, generally adopt the circulation of gate valve control media.Due to the particularity of medium, once the moisture content occurred in leakage and air reacts produce corrosive material, corrosion is produced to equipment and environment structure is polluted, and medium also has very large abrasiveness.Therefore, require that gate valve accomplishes zero sealability leaked outside and stronger wear-resisting property.Generally adopt between the flashboard of existing gate valve and valve seat and firmly seal or soft sealing structure, the structure that is firmly sealed and matched has good wear-resisting property, and soft sealing structure has good sealability, but is difficult to accomplish to have good sealability and wear-resisting property simultaneously.And the impurity piled up bottom the valve body valve pocket of existing gate valve can to flashboard card and wearing and tearing.In addition, in flashboard opening-closing process, easily impurity is brought in lid chamber, wearing and tearing are produced to ram seal face.
Summary of the invention
The purpose of this utility model is the shortcoming existed for prior art, there is provided one not easily to pile up in lid chamber and valve pocket to form wearing and tearing to flashboard and jam, valve seat have soft or hard double seal, sealability and the good special blade type gate valve of desulphurization denitration of abrasion resistance properties.
The technical solution of the utility model comprises valve body, valve seat, flashboard, valve rod, valve gap, support, handwheel, flashboard lower end is shaped with blade type inclined-plane, valve rod lower end is fixedly connected with in the middle of flashboard upper end, valve rod upper end is connected with handwheel by Stem Mut, installs stuffing box packing in the middle of valve rod and between valve gap; Mainly valve seat adopts and imports and exports two floating valve seat, valve seat and flashboard fitting surface pile-up welding hard alloy, make the hard sealing surface of valve seat, circular groove that is vertical and sealing surface is shaped with in the hard sealing surface neutral position of valve seat, abrasive rubber is poured in this circular groove, abrasive rubber surface slightly protrudes from the hard sealing surface of valve seat, makes valve seat soft sealing face; The valve pocket two bottom sides of valve body is shaped with the symmetrical storage slag chamber lower than valve seat periphery, and install slag-off valve in the bottom in storage slag chamber, the cleaning hose being communicated with valve pocket is installed in valve body both sides; Pilot seal plate is set between valve gap and valve body, in the middle of this pilot seal plate, is shaped with the pilot seal groove coordinated with flashboard motive sealing.
In above technological scheme, in the middle of stuffing box packing, spacer ring stuffing box gland is set.
The utility model has the advantages that valve seat adopts and import and export two hard soft double sealing structure that floats, achieve wear-resisting, resistance to erosion and zero leakage; Body base is shaped with storage slag chamber and cleaning hose channel system, is convenient to storage and flushing that valve pocket accumulates thing, avoids accumulating thing and produces jam and wearing and tearing to flashboard; Pilot seal plate is set between valve gap and valve body, prevents medium slag thing from entering valve cover cavity and pile up the generation wearing and tearing of ram seal face.There is the features such as sealability is reliable, wear-resisting property is good.
Accompanying drawing explanation
Fig. 1 is sectional view of the present utility model.
Fig. 2 is shape assumption diagram of the present utility model.
Embodiment
The special blade type gate valve of desulphurization denitration as shown in Figure 1, comprise valve body 1, valve seat 2, flashboard 3, valve rod 7, valve gap 8, support 12, handwheel 13, flashboard 3 lower end is shaped with blade type inclined-plane, valve rod 7 lower end is fixedly connected with in the middle of flashboard 3 upper end, valve rod 7 upper end is connected with handwheel 13 by Stem Mut 5, install stuffing box packing 9 in the middle of valve rod 7 and between valve gap 8, sealing filler 9 is arranged in the packing cavity between valve gap 8 and valve rod 7 by Gland 11; Valve seat 2 adopts imports and exports two floating valve seat, valve seat 2 and flashboard 3 fitting surface pile-up welding hard alloy, make the hard sealing surface of valve seat, improve wear-resisting, flushing resistance, be shaped with circular groove that is vertical and sealing surface in the hard sealing surface neutral position of valve seat, in this circular groove, pour into abrasive rubber 6, abrasive rubber 6 surface slightly protrudes from the hard sealing surface of valve seat, make valve seat soft sealing face, realize the zero leakage performance of sealing pair; The valve pocket two bottom sides of valve body 1 is shaped with the symmetrical storage slag chamber lower than valve seat 2 periphery, the impurity in valve pocket is made to be stored in slag chamber, impurity is avoided to produce jam and wearing and tearing to flashboard 3, in the bottom in storage slag chamber, slag-off valve 15 is installed, impurity in periodic exhaustion storage slag chamber, the cleaning hose 14 being communicated with valve pocket is installed in valve body 1 both sides, regularly rinses valve pocket; Pilot seal plate 4 is set between valve gap 8 and valve body 1, in the middle of this pilot seal plate 4, is shaped with the pilot seal groove coordinated with flashboard 3 motive sealing, prevent impurity from entering valve gap 8 inner chamber and pile up flashboard 3 sealing surface generation wearing and tearing.
In the middle of stuffing box packing 9, spacer ring stuffing box gland 10 is set, when valve body 1 is installed on vertical pipe, avoids flashboard 3 to produce overhang, increase the wearing and tearing of stuffing box packing 9.
Claims (2)
1. the special blade type gate valve of desulphurization denitration, comprise valve body (1), valve seat (2), flashboard (3), valve rod (7), valve gap (8), support (12), handwheel (13), flashboard (3) lower end is shaped with blade type inclined-plane, valve rod (7) lower end is fixedly connected with in the middle of flashboard (3) upper end, valve rod (7) upper end is connected with handwheel (13) by Stem Mut (5), installs stuffing box packing (9) in the middle of valve rod (7) and between valve gap (8); It is characterized in that valve seat (2) adopts and import and export two floating valve seat, valve seat (2) and flashboard (3) fitting surface pile-up welding hard alloy, make the hard sealing surface of valve seat, circular groove that is vertical and sealing surface is shaped with in the hard sealing surface neutral position of valve seat, abrasive rubber (6) is poured in this circular groove, abrasive rubber (6) surface slightly protrudes from the hard sealing surface of valve seat, makes valve seat soft sealing face; The valve pocket two bottom sides of valve body (1) is shaped with the symmetrical storage slag chamber lower than valve seat (2) periphery, install slag-off valve (15) in the bottom in storage slag chamber, the cleaning hose (14) being communicated with valve pocket is installed in valve body (1) both sides; Pilot seal plate (4) is set between valve gap (8) and valve body (1), in the middle of this pilot seal plate (4), is shaped with the pilot seal groove coordinated with flashboard (3) motive sealing.
2. the special blade type gate valve of desulphurization denitration according to claim 1, is characterized in that arranging spacer ring stuffing box gland (10) in the middle of stuffing box packing (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420525113.9U CN204083309U (en) | 2014-09-10 | 2014-09-10 | The special blade type gate valve of desulphurization denitration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420525113.9U CN204083309U (en) | 2014-09-10 | 2014-09-10 | The special blade type gate valve of desulphurization denitration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204083309U true CN204083309U (en) | 2015-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420525113.9U Active CN204083309U (en) | 2014-09-10 | 2014-09-10 | The special blade type gate valve of desulphurization denitration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204083309U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106609853A (en) * | 2015-10-27 | 2017-05-03 | 德维阀门铸造（苏州）有限公司 | Short type flat gate valve |
-
2014
- 2014-09-10 CN CN201420525113.9U patent/CN204083309U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106609853A (en) * | 2015-10-27 | 2017-05-03 | 德维阀门铸造（苏州）有限公司 | Short type flat gate valve |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |