CN100416146C - Non-water energy-saving hot blast valve - Google Patents
Non-water energy-saving hot blast valve Download PDFInfo
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- CN100416146C CN100416146C CNB2005100484918A CN200510048491A CN100416146C CN 100416146 C CN100416146 C CN 100416146C CN B2005100484918 A CNB2005100484918 A CN B2005100484918A CN 200510048491 A CN200510048491 A CN 200510048491A CN 100416146 C CN100416146 C CN 100416146C
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Abstract
The present invention discloses a waterless energy saving hot air valve applied to hot air pipes. The present invention comprises a valve body, a valve cover and a valve plate, wherein the valve plate adopts an integral plate formed by combining definite form silicon nitride with silicon carbide; the upper part of the valve plate is connected with a valve rod which is guided to a lifting valve plate through a guide hole of the valve cover; a sealing position of the valve body and the valve plate adopts a sealing ring formed by combining silicon nitride with silicon carbide; a heat resistance sealing gasket used for avoiding the looseness of the valve plate caused by hot air impact is arranged between the sealing ring and a flange step of an outer shell; the valve body and the outer shell of the valve cover adopt steel structures; a riveting nail is welded on the inner surface; a delamination cover layer made of fire resistance materials is adopted; refractory mortar is coated on the inner layer, fire resistance pasters are pasted on the inner layer, light weight fire resistance materials are cast on the inner layer, and heavy weigh fire resistance materials are cast on the surface layer for heat insulation and washing resistance. The valve plate of the present invention adopts a purpose-made integral plate, the sealing point of the valve body and the valve plate adopts the purpose-made sealing ring, so the heat resistance is greatly improved, and the technological problem that the hot blast valve is easy to damage through frequent wash of the hot air is effectively solved. The valve body and the valve cover adopt the delamination cover layer, so the heat insulating effect is obvious. The present invention uses no water, so heat loss is avoided. The wind temperature is raised, and the present invention meets the requirements of water saving and energy saving in smelting industry.
Description
Affiliated technical field
The present invention relates to a kind of anhydrous hot-blast valve of blast-furnace hot-air pipe applications.
Background technique
Hot-blast valve is the key equipment that blast furnace ironmaking adopts, and is installed on the hot blast manifold between hot blast stove and the blast-furnace hot-air person in charge, is used at hot-blast stove gas burner the hot blast stove and the hot blast person in charge being separated.When hot-blast valve is opened, and the hot blast in the hot blast stove (1200～1350 ℃, 0.3～0.5MPa) will be sent to blast furnace through hot-blast valve; When hot-blast valve cuts out, bear huge heat load, so the working condition of hot-blast valve is very abominable from blast furnace one side.For a long time, hot-blast valve adopts low carbon steel welding, water-cooling structure always both at home and abroad.Chinese patent 98235863.6 discloses a kind of anhydrous high temperature resistant valve, abandoned the water cycle type of cooling, adopted the heat-resistant material liner, prevented that to a certain extent cracking phenomena from appearring in steel pipe or steel plateelement, improved the valve working quality, but owing to adopt single heat-resistant material liner, effect of heat insulation is poor, not anti-ly washes away and weares and teares, its structural design is unreasonable, especially valve plate poor heat resistance is damaged more seriously, can't guarantee working life of valve.
Summary of the invention
In order to solve the technical barrier that above-mentioned puzzlement hot-blast valve can't normally use, improve the valve part structural design, adopt the heat resistance material, take anhydrous cooling method, thereby prolong hot-blast valve working life, a kind of anhydrous hot-blast valve is provided for this reason.
The technical solution adopted in the present invention is:
Anhydrous hot-blast valve comprises valve body, valve gap and valve plate.
Valve body and valve gap shell all adopt steel structure, and internal surface weldering rivet clasp nail adopts refractory liner coating by different level, internal layer is brushed refractory mortar successively, pastes refractory felt, pours into a mould lightweight refractory then, surface layer cast heavy refractory material, thus reach heat insulation and anti-purpose of washing away; Valve plate adopts typing silicon nitride combined silicon carbide integral slab, connects valve rod by top, and the latter is from valve gap top pilot hole guiding lifting valve plate.Valve body and valve plate constitute the position of sealing and adopt typing silicon nitride combined silicon carbide seal ring, establish heat-resistant seal gasket between sealing circle and the shell flange step, can prevent that hot blast from impacting valve plate and making it loosening, and prevent that the suffered high transmission of heat of seal ring is to the shell flange, avoid that the latter is overheated to cause oxidation, decarburization, so that reduction of service life.
Si
3N
4(silicon nitride) based on silicon carbide is a kind of novel refractory that Sinosteel Luoyang Institute of Refractories is developed, and obtains national science and technology progress second prize in 2005.This material have hot strength height (1100 ℃ 〉=20 times), thermal conductivity height (15～24w/mk), advantage such as the acid resistant alkali erodibility is good, maximum operation (service) temperature can reach 1600 ℃.Be applicable to the application of hot air duct liner.
Anhydrous hot air valve plate adopts that lining coating effect of heat insulation is obvious by different level, and valve body, valve gap and valve plate have been saved water resources all without water cooling, can reduce or avoid cooling water to take away heat, improved wind-warm syndrome, energy saving adapts to the water saving of present steel enterprise, energy-conservation pressing for.Adopt special typing silicon nitride combined silicon carbide integral slab, special typing silicon nitride combined silicon carbide seal ring is adopted at the position of valve body and valve plate sealing, heat resistance increases substantially, and success has solved the technical barrier that hot blast frequently washes away rapid wear effectively.
Description of drawings
Fig. 1 is a plan view of the present invention
Fig. 2 is a valve board structure schematic representation of the present invention
Embodiment
Introduce embodiments of the invention below in conjunction with accompanying drawing.
As shown in the figure: anhydrous hot-blast valve comprises valve body (1), valve gap (2) and valve plate (3).
Valve body (1) and valve gap (2) shell all adopt steel structure, internal surface weldering rivet clasp nail (4), adopt refractory liner coating by different level, internal layer is brushed refractory mortar (5) successively, paste refractory felt (6), pour into a mould lightweight refractory (7) then, surface layer cast heavy refractory material (8) is to obtain good effect of heat insulation and anti-scouring effect.
Valve plate (3) adopts the special typing silicon nitride combined silicon carbide of Sinosteel Luoyang Institute of Refractories integral slab, and top connects valve rod (12) and draws pilot hole from valve gap (2) top, with guiding lifting valve plate (3).
Valve body (1) adopts Sinosteel Luoyang Institute of Refractories special typing silicon nitride combined silicon carbide seal ring (9) with the position that valve plate (3) constitutes sealing, establish high temperature asbestos slate heat-resistant seal gasket (11) between sealing circle (9) and shell flange (10) step, it is loosening to prevent that hot blast from causing when impacting valve plate, influence sealing effect, and prevent that the suffered high transmission of heat of seal ring from make that the latter is overheated to cause oxidation, decarburization, reduction of service life for the shell flange.
Claims (3)
1. the anhydrous hot-blast valve used of a hot air duct, comprise valve body, valve gap and valve plate, it is characterized in that: valve body and valve gap shell all adopt steel structure, internal surface weldering rivet clasp nail adopts refractory liner coating by different level, internal layer is brushed refractory mortar successively, paste refractory felt, pour into a mould lightweight refractory then, surface layer cast heavy refractory material; Valve plate adopts typing silicon nitride combined silicon carbide integral slab, and valve body and valve plate constitute the position of sealing and adopt typing silicon nitride combined silicon carbide seal ring.
2. anhydrous hot-blast valve according to claim 1 is characterized in that valve plate top connects valve rod, and the latter draws from valve gap top pilot hole.
3. anhydrous hot-blast valve according to claim 1 is characterized in that establishing heat-resistant seal gasket between valve body and valve plate sealing typing silicon nitride combined silicon carbide seal ring at position and the shell flange step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100484918A CN100416146C (en) | 2005-11-04 | 2005-11-04 | Non-water energy-saving hot blast valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100484918A CN100416146C (en) | 2005-11-04 | 2005-11-04 | Non-water energy-saving hot blast valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1766379A CN1766379A (en) | 2006-05-03 |
| CN100416146C true CN100416146C (en) | 2008-09-03 |
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ID=36742428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100484918A Expired - Fee Related CN100416146C (en) | 2005-11-04 | 2005-11-04 | Non-water energy-saving hot blast valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100416146C (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4161959A (en) * | 1975-04-23 | 1979-07-24 | Zimmermann & Jansen Gmbh | High-temperature slide valve, especially hot-blast slide valve |
| CN2177728Y (en) * | 1993-12-31 | 1994-09-21 | 李红继 | Waterless-cooled hot-blast valve |
| US5396920A (en) * | 1991-12-18 | 1995-03-14 | Nouvelle Usine De Wecker S.A. | Water-cooled housing for a hot-blast slide valve |
| JPH0861539A (en) * | 1994-08-25 | 1996-03-08 | Azuma Tekko Kk | Hot blast control valve |
| CN1131134A (en) * | 1995-03-10 | 1996-09-18 | 薛天瑞 | Method for producing high strength silicon nitride products based on silicon carbide |
| CN2338546Y (en) * | 1998-05-31 | 1999-09-15 | 郭文明 | No-water high temp.-resistant valve |
| CN2338562Y (en) * | 1998-05-31 | 1999-09-15 | 郭文明 | High-temp. blast valve |
| JP2002241818A (en) * | 2001-02-20 | 2002-08-28 | Azuma Tekko Kk | Hot blast control valve |
| CN2725654Y (en) * | 2004-06-16 | 2005-09-14 | 秦皇岛冶金机械有限公司 | Hot air valre plate |
| CN2881244Y (en) * | 2005-11-04 | 2007-03-21 | 世林（漯河）冶金设备有限公司 | Waterless energy saving hot air valve |
-
2005
- 2005-11-04 CN CNB2005100484918A patent/CN100416146C/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4161959A (en) * | 1975-04-23 | 1979-07-24 | Zimmermann & Jansen Gmbh | High-temperature slide valve, especially hot-blast slide valve |
| US5396920A (en) * | 1991-12-18 | 1995-03-14 | Nouvelle Usine De Wecker S.A. | Water-cooled housing for a hot-blast slide valve |
| CN2177728Y (en) * | 1993-12-31 | 1994-09-21 | 李红继 | Waterless-cooled hot-blast valve |
| JPH0861539A (en) * | 1994-08-25 | 1996-03-08 | Azuma Tekko Kk | Hot blast control valve |
| CN1131134A (en) * | 1995-03-10 | 1996-09-18 | 薛天瑞 | Method for producing high strength silicon nitride products based on silicon carbide |
| CN2338546Y (en) * | 1998-05-31 | 1999-09-15 | 郭文明 | No-water high temp.-resistant valve |
| CN2338562Y (en) * | 1998-05-31 | 1999-09-15 | 郭文明 | High-temp. blast valve |
| JP2002241818A (en) * | 2001-02-20 | 2002-08-28 | Azuma Tekko Kk | Hot blast control valve |
| CN2725654Y (en) * | 2004-06-16 | 2005-09-14 | 秦皇岛冶金机械有限公司 | Hot air valre plate |
| CN2881244Y (en) * | 2005-11-04 | 2007-03-21 | 世林（漯河）冶金设备有限公司 | Waterless energy saving hot air valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1766379A (en) | 2006-05-03 |
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