CN205446745U - Desulfurization special use control valve sealed firmly - Google Patents
Desulfurization special use control valve sealed firmly Download PDFInfo
- Publication number
- CN205446745U CN205446745U CN201620267505.9U CN201620267505U CN205446745U CN 205446745 U CN205446745 U CN 205446745U CN 201620267505 U CN201620267505 U CN 201620267505U CN 205446745 U CN205446745 U CN 205446745U
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- valve body
- valve
- butterfly plate
- desulfurization
- valve rod
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Abstract
The utility model relates to a desulfurization special use control valve sealed firmly, including valve body, disk seat, butterfly plate, valve rod, control mechanism, valve body, butterfly plate, valve rod adopt three eccentric structures, mainly be that the disk seat adopts multi -level sealing washer radially to inlay the dress in the valve body passageway, to set up the elastic compensation device between multi -level sealing washer right side and valve body, the butterfly plate adopts metal seal face and multi -level sealing washer to mutually support. When the negative pressure, opposite pressure is used in multi -level sealed face left surface, promotes multi -level sealing washer compression elastic compensation device, and with multi -level sealing washer and butterfly plate sealing surface press the sealing cooperation, its application temperature is high, and two -way sealing performance is good. Be applicable to the desulfurization operating mode in power plant.
Description
Technical field
This utility model belongs to valve field, especially with regard to a kind of hard seal butterfly valve.This utility model is applicable to the Desulfurization in power plant.
Background technology
Butterfly valve is commonly used in desulfurization project, at present more employing soft sealing butterfly valve in desulfurization project, and the use temperature of its shortcoming is relatively low.So typically using hard seal butterfly valve in high temperature desulfurizing operating mode, its sealing pair uses setting-in multilayer hard-seal circle on butterfly plate to cooperate with metal seat valve sealing surface, carries operation at high temperature, adapts to high temperature desulfurizing operating mode.But, Desulfurization has negative pressure characteristic, and this multilayer hard-seal butterfly valve is under negative pressure state, and buffer brake promotes butterfly plate sealing surface to be mutually disengaged with sealing surface of seat, makes sealing pair produce leakage, two way seal poor performance.
Summary of the invention
The purpose of this utility model is the shortcoming existed for prior art, improves and a kind of uses the special hard seal control valve of desulfurization that temperature is high, two way seal performance is good.
The technical solution of the utility model includes valve body, valve seat, butterfly plate, valve rod, controlling organization, valve body, butterfly plate, valve rod use three eccentricity structure, controlling organization is fixedly mounted on valve body by support, between stem lower portion periphery and valve body, bearing is set, between valve rod top periphery and valve body, airtight and watertight padding is set, butterfly plate is fixedly mounted in the middle part of valve rod by pin, and the valve body employing right side is entered a left side and gone out mounting structure；Mainly valve seat uses multi-layer sealing ring to be radially inlaid in valve channel, arranges elastic compensating device on the right side of multi-layer sealing ring and between valve body, and butterfly plate uses metallic sealing section to cooperate with multi-layer sealing ring.
Preferably, dust-proof graphite bushing is set between valve rod periphery and the valve body of bearing upper end.
Preferably, injection pressure shading ring is set in the middle part of airtight and watertight padding.
Preferably, between valve rod lower surface and valve body lower cover, steel ball is set.
The utility model has the advantages that valve seat uses multi-layer sealing ring to cooperate with butterfly plate metallic sealing section, elastic compensating device is set on the right side of multi-layer sealing ring and between valve body, when negative pressure, buffer brake acts on Multi-layer sealing left side of face face, promote multi-layer sealing ring elasticity of compression compensation device, being sealed with butterfly plate sealing surface compact by multi-layer sealing ring and coordinate, it uses temperature high, and two way seal performance is good.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is partial structurtes enlarged drawing at I in this utility model Fig. 1.
Fig. 3 is partial structurtes enlarged drawing at II in this utility model Fig. 1.
Fig. 4 is partial structurtes enlarged drawing at III in this utility model Fig. 1.
Fig. 5 is partial structurtes enlarged drawing at IV in this utility model Fig. 1.
Detailed description of the invention
The special hard seal control valve of desulfurization as shown in Figure 1, including valve body 1, valve seat, butterfly plate 2, valve rod 3, controlling organization 4, valve body 1, butterfly plate 2, valve rod 3 use three eccentricity structure, controlling organization 4 is fixedly mounted on valve body 1 by support 5, between valve rod 3 bottom periphery and valve body 1, bearing 6 is set, between valve rod 3 top periphery and valve body 1, airtight and watertight padding 7 is set, butterfly plate 2 is fixedly mounted in the middle part of valve rod 3 by pin, valve body 1 uses the right side to enter a left side to go out mounting structure, i.e. it is connected with inlet pipeline on the right side of valve body 1 passage, is connected with outlet conduit on the left of valve body 1 passage；Valve seat uses multi-layer sealing ring 8 to be radially inlaid in valve body 1 passage, and this multi-layer sealing ring 8 uses stainless steel substrates and graphite linings to be separated by composition, and butterfly plate 2 uses metallic sealing section to cooperate with multi-layer sealing ring 8, carries operation at high temperature, as shown in Figure 2；Elastic compensating device 9 is set on the right side of multi-layer sealing ring 8 and between valve body 1, this elastic compensating device 9 can use O-shaped rubber ring, the buffer brake that pipeline internal medium negative pressure produces promotes multi-layer sealing ring 8 to compress O-shaped rubber ring, the sealing surface making multi-layer sealing ring 8 seals with butterfly plate 2 sealing surface compact, realize two way seal, as shown in Figure 3.
Dust-proof graphite bushing 10 is set between valve rod 3 periphery and valve body 1 of bearing 6 upper end, prevents dust from entering bearing 6 stuck, as shown in Figure 4.
Injection pressure shading ring 11 is set in the middle part of airtight and watertight padding 7, improves lumen sealing property, prevent toxic gas from leaking, as shown in Figure 5.
Steel ball 13 is set between valve rod 3 lower surface and valve body lower cover 12, reduces and open and close moment, improve and open and close motility.
Claims (5)
1. the special hard seal control valve of desulfurization, including valve body (1), valve seat, butterfly plate (2), valve rod (3), controlling organization (4), valve body (1), butterfly plate (2), valve rod (3) uses three eccentricity structure, controlling organization (4) is fixedly mounted on valve body (1) by support (5), bearing (6) is set between valve rod (3) bottom periphery and valve body (1), airtight and watertight padding (7) is set between valve rod (3) top periphery and valve body (1), butterfly plate (2) is fixedly mounted on valve rod (3) middle part by pin, valve body (1) the employing right side is entered a left side and is gone out mounting structure；It is characterized in that valve seat uses multi-layer sealing ring (8) to be radially inlaid in valve body (1) passage, butterfly plate (2) uses metallic sealing section to cooperate with multi-layer sealing ring (8)；Between multi-layer sealing ring (8) right side and valve body (1), elastic compensating device (9) is set.
The special hard seal control valve of desulfurization the most according to claim 1, is characterized in that arranging dust-proof graphite bushing (10) between valve rod (3) periphery and valve body (1) of bearing (6) upper end.
The special hard seal control valve of desulfurization the most according to claim 1 and 2, is characterized in that arranging injection pressure shading ring (11) at airtight and watertight padding (7) middle part.
The special hard seal control valve of desulfurization the most according to claim 1 and 2, is characterized in that arranging between valve rod (3) lower surface and valve body lower cover (12) steel ball (13).
The special hard seal control valve of desulfurization the most according to claim 3, is characterized in that arranging between valve rod (3) lower surface and valve body lower cover (12) steel ball (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620267505.9U CN205446745U (en) | 2016-03-28 | 2016-03-28 | Desulfurization special use control valve sealed firmly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620267505.9U CN205446745U (en) | 2016-03-28 | 2016-03-28 | Desulfurization special use control valve sealed firmly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205446745U true CN205446745U (en) | 2016-08-10 |
Family
ID=56609269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620267505.9U Active CN205446745U (en) | 2016-03-28 | 2016-03-28 | Desulfurization special use control valve sealed firmly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205446745U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111043331A (en) * | 2019-12-17 | 2020-04-21 | 孔仕华 | Prevent integration valve of leakage |
-
2016
- 2016-03-28 CN CN201620267505.9U patent/CN205446745U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111043331A (en) * | 2019-12-17 | 2020-04-21 | 孔仕华 | Prevent integration valve of leakage |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |