CN203869531U - Tertiary air duct of cement calcining kiln - Google Patents
Tertiary air duct of cement calcining kiln Download PDFInfo
- Publication number
- CN203869531U CN203869531U CN201420313041.1U CN201420313041U CN203869531U CN 203869531 U CN203869531 U CN 203869531U CN 201420313041 U CN201420313041 U CN 201420313041U CN 203869531 U CN203869531 U CN 203869531U
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- China
- Prior art keywords
- air duct
- tertiary
- wear layer
- air pipe
- tertiary air
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- 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.)
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Abstract
The utility model discloses a tertiary air duct of a cement calcining kiln and belongs to the field of cement production equipment. The tertiary air duct comprises an air duct body and a wear layer. The wear layer is disposed on the major-radius side of the bend of the air duct body, the length of the wear layer is equal to the arc length of the inside circle of the bend of the air duct body, and the width of the wear layer is one half of the circumference of the inside circle of the air duct body. Besides, the wear layer is formed by assembling ceramic tiles or alloy wear cast irons, and the thickness of the wear layer is at least double of the wall thickness of the tertiary air duct, thus damage to the tertiary air duct due to the fact that the bend of the tertiary air duct is damaged by high-speed dust-containing air can be avoided, stoppage time is shortened, and running cost is saved.
Description
Technical field
The utility model belongs to cement manufacture plant field, particularly a kind of tertiary-air pipe of cement burning kiln.
Background technology
Conventional cement burning kiln has tertiary-air pipe, the function of an airduct is the air that coal-fired combustion-supporting is provided for calcining kiln, secondary air channel is to come back to calcining kiln by the raw material that enters calcining kiln being carried out to preheating through grate-cooler hot blast out, tertiary-air pipe is to use to dore furnace through grate-cooler hot blast feeding out, to reach the function of pre-heat utilization; Current tertiary-air pipe adopts steel pipe mostly; due to the layout of equipment; pipeline need arrange necessarily turning; moreover; from grate-cooler hot blast out, contain dust particle, higher through the wind speed of tertiary-air pipe, the high speed winds that contains dust forms strong impact at the turning of tertiary-air pipe to the turning site of airduct; make tertiary-air pipe turning often because wearing and tearing damage, thereby cause shutdown maintenance and change tertiary-air pipe.
Summary of the invention
For the existing defect of existing cement burning kiln tertiary-air pipe, the utility model proposes a kind of tertiary-air pipe of cement burning kiln, comprise airduct, it is characterized in that: also comprise wearing layer; Described airduct one end is connected with grate-cooler, and one end is connected with dore furnace, and described wearing layer is positioned at the side that airduct turning radius is large, and its length equals the arc length of airduct turning internal diameter, and its width is the half of airduct internal diameter girth; Wearing layer employing Ceramic Tiles or alloy wear-resisting casting pig are assembled, and the thickness of wearing layer is greater than the more than a times of tertiary-air pipe wall thickness.
Beneficial effect
The beneficial effects of the utility model are, can prevent that the tertiary-air pipe causing due to the turning of the high speed winds damage tertiary-air pipe that contains dust is fragile, have reduced downtime, have saved operating cost.
Brief description of the drawings
Fig. 1 structural representation of the present utility model
1. grate-cooler, 2 tertiary-air pipe, 3. wearing layer, 4. dore furnace.
Detailed description of the invention
Further illustrate by reference to the accompanying drawings now implementation method of the present utility model, embodiment mono-, as Fig. 1, tertiary-air pipe 2 one end are connected with grate-cooler 1, the other end of tertiary-air pipe 2 is connected with dore furnace 4, because the diameter of tertiary-air pipe 2 enough allows to construct therein, by each piece close-packed arrays of wear-resistant ceramic brick, adopt bonding agent and tertiary-air pipe 2 turning inwall bondings firmly, between every Ceramic Tiles, also bonding is firm, form the half that width equals the inner circle girth of tertiary-air pipe 2, length equals the arc length at tertiary-air pipe 2 turnings, just complete enforcement of the present utility model.In use, from grate-cooler 1 hot blast that contains dust out, flow to dore furnace 4 through tertiary-air pipe 2, in the time passing through the turning of tertiary-air pipe 2, what impact is the wearing layer 3 at turning, and can not cause wearing and tearing to the body of tertiary-air pipe 2, has so just reduced the body wearing and tearing of tertiary-air pipe 2, in the service life that has extended tertiary-air pipe 2, reduce operating cost.
Embodiment bis-, with embodiment mono-, changes into antiwear cast iron alloy by wear-resistant ceramic brick, adopts same technique, has just completed the enforcement of this fact Example.
The present embodiment is the optimal way of numerous embodiments, does not represent the whole of the technical program.
Claims (1)
1. a tertiary-air pipe for cement burning kiln, comprises airduct, it is characterized in that: also comprise wearing layer; Described airduct one end is connected with grate-cooler, and one end is connected with dore furnace, and described wearing layer is positioned at the side that airduct turning radius is large, and its length equals the arc length of airduct turning internal diameter, and its width is the half of airduct internal diameter girth; Wearing layer employing Ceramic Tiles or alloy wear-resisting casting pig are assembled, and the thickness of wearing layer is greater than the more than a times of tertiary-air pipe wall thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420313041.1U CN203869531U (en) | 2014-06-13 | 2014-06-13 | Tertiary air duct of cement calcining kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420313041.1U CN203869531U (en) | 2014-06-13 | 2014-06-13 | Tertiary air duct of cement calcining kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203869531U true CN203869531U (en) | 2014-10-08 |
Family
ID=51650472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420313041.1U Expired - Fee Related CN203869531U (en) | 2014-06-13 | 2014-06-13 | Tertiary air duct of cement calcining kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203869531U (en) |
-
2014
- 2014-06-13 CN CN201420313041.1U patent/CN203869531U/en not_active Expired - Fee Related
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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: 20141008 Termination date: 20150613 |
|
| EXPY | Termination of patent right or utility model |