CN203009873U - Valve on and off sealing device for coal-injection clock valve of blast furnace - Google Patents
Valve on and off sealing device for coal-injection clock valve of blast furnace Download PDFInfo
- Publication number
- CN203009873U CN203009873U CN 201220720658 CN201220720658U CN203009873U CN 203009873 U CN203009873 U CN 203009873U CN 201220720658 CN201220720658 CN 201220720658 CN 201220720658 U CN201220720658 U CN 201220720658U CN 203009873 U CN203009873 U CN 203009873U
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- valve
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- plate flange
- seal ring
- sealing device
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Abstract
The utility model discloses a valve on and off sealing device for a coal-injection clock valve of a blast furnace and relates to a hanger structure. The valve on and off sealing device comprises a valve seat, a sealing ring, a press plate flange and a lower valve bonnet, and is characterized in that a steel tubular protective ring is fixedly welded and sleeved on the outer circle of the press plate flange, the lower edge surface of the tubular protective ring is flush with the lower edge surface of the press plate flange, and an upper edge surface of the tubular protective ring is lower than that of the sealing ring. The valve on and off sealing device has the advantages that the outer circle of the sealing ring is enclosed by the protective ring, and the sealing ring is effectively prevented from deforming outwards under impact of the lower valve bonnet. The protective ring and the press plate flange of the sealing ring are welded, and integral strength is enhanced.
Description
Technical field:
[0001The utility model relates to hanger structure, particularly a kind of valve body Open-close sealing device of pulverized coal injection clock valve.
Background technique:
Injection of Large Quantity of Coal Powder In B. F adopts the high-density coal injection technology, it is exactly the coal dust with the milled good heat insulation, pack in the winding-up tank by opening and closing the clock valve, and carry out weighing, and close close bottom flange, pressurize with nitrogen or compressed air, make in the winding-up tank and keep certain pressure, utilize pressure reduction toward the blast furnace pulverized coal conveying, reach the purpose that reduces coke ratio, generally only have two winding-up tanks to be used alternatingly.
The clock valve is comprised of vavle shelf, cylinder, crank-connecting rod, valve seat, bottom flange.Cylinder drives the bottom flange lifting by crank-connecting rod, the bottom flange bottom is the cavity cone-shaped, valve seat is the body shape in a tubular form, coil along annulus plate-like pedestal pulling method of cylindrical radially outward disjunctor is blue under valve seat, the bottom flange lifting opens and closes under bottom flange and valve seat along the pitch space between face, make coal dust thus passage enter the winding-up tank.Due to the pressurization of winding-up tank domestic demand, so be provided with the Open-close sealing device between valve seat and bottom flange.
The Open-close sealing device is comprised of valve seat, seal ring, pressing plate flange, bottom flange.Seal ring is the annulus plate-like, and be provided with several corresponding to the through hole of walking of several tapped holes uniform on valve seat pedestal flange plate, pressing plate flange shape also is the annulus plate-like, be provided with equally several corresponding to the through hole of walking of tapped hole uniform on valve seat pedestal flange plate, the pressing plate flange outer diameter equates with seal ring, pedestal flange outer diameter, pressing plate flange internal diameter is greater than internal diameter of the seal ring, also greater than under bottom flange along the face outer.Several bolts pass respectively pressing plate flange, seal ring walk through hole after, screw up in pedestal flange tapped hole, implement overlaying of seal ring fixing.During valve closing, the conical external circle face of bottom flange bottom overlays in the seal ring inner circle.
How to guarantee long-term, safe, the stable use of clock valve of tank of jetting, and reduce the time of the powder of coalingging as far as possible, Coal Injection Rate at BF is all produced considerable influence.If will cause slack tank can't get in advance coal dust ready during because of clock valve failure replacement clock valve, work tank needs normal pressure to coaling and causes the situation that disconnected coal blast furnace can't coal powder injection, and then affect the conditions of blast furnace direct motion, impact production.
When opening the clock valve, bottom flange is hidden in tank, accelerated the speed of coalingging, overall structure and weight are all little than original, change lifting all more convenient, but the clock valve that former producer is equipped with is shorter working life, the seal ring and the bottom flange that often the clock valve occur blow bad phenomenon, usually cause normally coal powder injection because changing bottom flange, and the accident of disconnected coal appears in blast furnace, not only affect the normal production of blast furnace, increase consumption, improve ironmaking cost, greatly increased maintenance workload simultaneously.
Summary of the invention:
The purpose of this utility model is to overcome defects, and a kind of valve body Open-close sealing device of pulverized coal injection clock valve is provided.
The utility model scheme is: comprise valve seat, seal ring, pressing plate flange, bottom flange, it is characterized in that: pressing plate flange excircle fit is welded and fixed the tubular body guard ring of a steel, under the tubular body guard ring along concordant along face under face and pressing plate flange, on the tubular body guard ring along face lower than on seal ring along face.
The utility model has the advantage of:
1, because guard ring surrounds the outer ring of seal ring, effectively controlled seal ring under the impact of bottom flange, laterally distortion.
2, the pressing plate flange due to guard ring and seal ring welds together, and has increased bulk strength.
3, due to the little 2mm of Thickness Ratio seal ring thickness of guard ring, reserved the compression volume of the long-term compressive deformation of seal ring.
Description of drawings:
Fig. 1 is the utility model structural representation.
Fig. 2 is the K section enlarged diagram of Fig. 1.
Fig. 3 is shape schematic diagram after the prior art sealed ring deformation.
Embodiment:
The utility model structure comprises valve seat 1, seal ring 3, pressing plate flange 5, bottom flange 2, it is characterized in that: pressing plate flange 5 cylindrical fits are welded and fixed the tubular body guard ring 4 of a steel, tubular body guard ring 4 times is concordant along face along face and pressing plate flange 5 times, on tubular body guard ring 4 along face lower than on seal ring 3 along face.
by long-term groping, find that the seal ring 3 of clock valve and bottom flange 2 are by the main cause of blow loss: there is defective in seal ring means of fixation on valve seat 1, former mode just adds a pressing plate flange 5 and uses bolt lock on valve seat 1 on seal ring 3 end faces, through bottom flange 2 repeatedly in switch and winding-up process the fluctuation of tank pressure constantly impact, cause seal ring 3 distortion, it is large that fixed bolt hole becomes, there is certain distance between bolt and bolt, make seal ring 3 projection laterally, be irregular deformation, add on bottom flange 2 conical surfaces and be stained with certain coal dust, strengthened the distortion of seal ring 3, cause seal ring 3, bottom flange 2 blow losses, cause bottom flange 2 to close not close, leak in occurring, just must change the clock valve.In order to overcome this situation, add a guard ring 4 in seal ring 3 outsides, weld with the pressing plate flange 5 of former location seal ring 3, can effectively control seal ring 3 under bottom flange 2 impacts and the irregular deformation that produces.Facts have proved, extend widely clock valve working life through improving.
Claims (1)
1. the valve body Open-close sealing device of a pulverized coal injection clock valve, comprise valve seat (1), seal ring (3), pressing plate flange (5), bottom flange (2), it is characterized in that: pressing plate flange (5) cylindrical fit is welded and fixed the tubular body guard ring (4) of a steel, under tubular body guard ring (4), along concordant along face under face and pressing plate flange (5), tubular body guard ring (4) is upper upper along face lower than seal ring (3) along face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220720658 CN203009873U (en) | 2012-12-24 | 2012-12-24 | Valve on and off sealing device for coal-injection clock valve of blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220720658 CN203009873U (en) | 2012-12-24 | 2012-12-24 | Valve on and off sealing device for coal-injection clock valve of blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203009873U true CN203009873U (en) | 2013-06-19 |
Family
ID=48601470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220720658 Expired - Fee Related CN203009873U (en) | 2012-12-24 | 2012-12-24 | Valve on and off sealing device for coal-injection clock valve of blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203009873U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113374879A (en) * | 2021-06-23 | 2021-09-10 | 烟台艾沃环保科技有限公司 | Zero-leakage poppet valve for waste gas treatment equipment |
-
2012
- 2012-12-24 CN CN 201220720658 patent/CN203009873U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113374879A (en) * | 2021-06-23 | 2021-09-10 | 烟台艾沃环保科技有限公司 | Zero-leakage poppet valve for waste gas treatment equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130619 Termination date: 20201224 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |