CN202182619U - Tertiary air valve for cement rotary kiln - Google Patents
Tertiary air valve for cement rotary kiln Download PDFInfo
- Publication number
- CN202182619U CN202182619U CN2011202917426U CN201120291742U CN202182619U CN 202182619 U CN202182619 U CN 202182619U CN 2011202917426 U CN2011202917426 U CN 2011202917426U CN 201120291742 U CN201120291742 U CN 201120291742U CN 202182619 U CN202182619 U CN 202182619U
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- CN
- China
- Prior art keywords
- valve body
- valve
- rotary kiln
- air
- tertiary air
- 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 - Fee Related
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Abstract
The utility model relates to cement fabrication, in particular to a tertiary air valve for a cement rotary kiln. The tertiary air valve for the cement rotary kiln is located in a square air duct defined by fireproof bricks of the rotary kiln. A valve body of the tertiary air valve is a cylinder or an ellipsoid capable of vertically moving along the wall of the air duct, the upper portion of the valve body penetrates through an upper cover of the air duct, a suspending nose is arranged at the top of the valve body, the transverse diameter of the valve body is equal to the transverse inner diameter of the air duct, and the valve body is made of abrasion-resistant and high-temperature-resistant silicon carbide castable reinforced concrete. A rebar is heat-resisting, and the preferred rebar model is Cr17Ni12Mo2. High-temperature-resistant silicon dioxide ceramic chips are attached to the windward surface of the valve body so as to improve the effect of resisting hot air flushing. The tertiary air valve has the advantages that due to the fact that the valve body and fireproof brick walls on two sides of the valve body are in smooth transition and free of edges and corners, the air valve is little in crusting, easy to adjust and clear, simple and convenient to replace, long in service life and the like.
Description
Technical field
The utility model relates to cement manufacture plant, is specially the tertiary air valve that is applied to cement rotary kiln.
Background technology
The tertiary air valve just is mounted on the tertiary-air pipe in order to control the particular valve of cement rotary kiln tertiary air quantity; Cement manufacturing enterprise rotary kiln hot blast control at present adopts all that to inlay board-like tertiary air valve as shown in Figure 1; Existing problems are: square board-like air-valve edge, distinguished and admirable edge flows and has little eddy current, and the gas that contains sulphur, chlorine harmful components forms skinning in dead angle place's short time that eddy current forms, and forms an integral body with air-valve; Make the air-valve can not be up and down; The cleaning skinning can only carry out when stopping production, and cleaning labour intensity is big, fragile air-valve.Have a strong impact on rotary kiln thermal regulation balance, influence output and quality, and board-like air-valve bottom is because of the thin thickness easy burn-out, the life-span is short, in general 3 months; Complicated operation, loaded down with trivial details.
Summary of the invention
A kind of cement rotary kiln of characteristics such as the purpose of the utility model is to improve existing tertiary air valve arrangement, and provide a kind of and have: skinning is few, and it is easy to be prone to adjusting, easy to clean, replacing, and the life-span is long is used the tertiary air valve.
The technical scheme of the utility model is: a kind of cement rotary kiln is used air-valve; Be arranged in the square air channel that rotary kiln refractory brick surrounds; Its valve body be can be along the air channel vertically movable cylinder or the ellipsoid of wall; The air channel loam cake is passed on valve body top, and nose is hung at the top of valve body, and the horizontal internal diameter in the trans D of valve body and air channel is suitable.
Said valve body is a Wear-resistant, high-temperature resistant silicon carbide castable armored concrete material.
Said reinforcing bar is heat-resisting reinforcing bar, and the reinforcing bar model that preferably adopts is Cr
17Ni
12Mo
2
Post resistant to elevated temperatures SiO 2-ceramic sheet on the windward side of said valve body, to increase heat-resisting wind scouring effect.
Change original board-like air-valve into column type or oval column type air-valve; Weight and board-like suitable, three of air-valves are crossed wind (both sides and bottom), and the refractory brickwork of valve body and valve body both sides does not have corner angle; Distinguished and admirable not flowing through along valve body can form the eddy current dead angle, is not easy to form skinning.A skinning can be arranged at the top of valve body, because of its drive mechanism is simple, aborning, just discloses and can clean out with reinforcing bar.
The beneficial effect of the utility model is: because the refractory brickwork rounding off of valve body and valve body both sides does not have corner angle, institute is so that air-valve advantages such as to have a skinning few, and it is easy to be prone to adjusting, easy to clean, replacing, and the life-span is long.
Description of drawings
Fig. 1 is a prior art air-valve structure principle chart;
Fig. 2 is the utility model air-valve structure principle chart.
Among the figure, the 1. windward side of valve body, 2. refractory brick body of wall, 3. wind direction 4. hangs nose.
The specific embodiment
As shown in Figure 2, a kind of cement rotary kiln is used the tertiary air valve, is arranged in the square air channel that rotary kiln refractory brick surrounds, its valve body be can be along the air channel the vertically movable cylinder of wall, nose 4 is hung at the top of valve body, the horizontal internal diameter in the trans D of valve body and air channel is suitable; Said valve body is a Wear-resistant, high-temperature resistant silicon carbide castable armored concrete material; Said reinforcing bar is Cr
17Ni
12Mo
2Heat resisting steel; Post the SiO 2-ceramic sheet on the windward side 1 of said valve body, to increase heat-resisting wind scouring effect.
Claims (4)
1. a cement rotary kiln is used the tertiary air valve; Be arranged in the square air channel that the rotary kiln refractory material surrounds; It is characterized in that: its valve body for can be along the air channel vertically movable cylinder or the oval cylinder of wall; The air channel loam cake is passed on valve body top, and nose is hung at the valve body top, and the horizontal internal diameter in the trans D of valve body and air channel is suitable.
2. a kind of cement rotary kiln as claimed in claim 1 is used the tertiary air valve, it is characterized in that: said valve body is a Wear-resistant, high-temperature resistant silicon carbide castable armored concrete material.
3. a kind of cement rotary kiln as claimed in claim 2 is used the tertiary air valve, it is characterized in that: said reinforcing bar is Cr
17Ni
12Mo
2Heat resisting steel.
4. according to claim 1 or claim 2 a kind of cement rotary kiln is used the tertiary air valve, it is characterized in that: post the SiO 2-ceramic sheet on the windward side of said valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202917426U CN202182619U (en) | 2011-08-07 | 2011-08-07 | Tertiary air valve for cement rotary kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202917426U CN202182619U (en) | 2011-08-07 | 2011-08-07 | Tertiary air valve for cement rotary kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202182619U true CN202182619U (en) | 2012-04-04 |
Family
ID=46175654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202917426U Expired - Fee Related CN202182619U (en) | 2011-08-07 | 2011-08-07 | Tertiary air valve for cement rotary kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202182619U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878312A (en) * | 2012-09-28 | 2013-01-16 | 长兴国盛耐火材料有限公司 | Guard brick structure used with tertiary air gate valve |
-
2011
- 2011-08-07 CN CN2011202917426U patent/CN202182619U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878312A (en) * | 2012-09-28 | 2013-01-16 | 长兴国盛耐火材料有限公司 | Guard brick structure used with tertiary air gate valve |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120404 Termination date: 20160807 |