CN102357381A - Ball mill for pulverized-coal fired boiler - Google Patents
Ball mill for pulverized-coal fired boiler Download PDFInfo
- Publication number
- CN102357381A CN102357381A CN2011103059516A CN201110305951A CN102357381A CN 102357381 A CN102357381 A CN 102357381A CN 2011103059516 A CN2011103059516 A CN 2011103059516A CN 201110305951 A CN201110305951 A CN 201110305951A CN 102357381 A CN102357381 A CN 102357381A
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- Prior art keywords
- pulverized
- fired boiler
- ball mill
- coal fired
- coal
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Abstract
The invention discloses a ball mill for a pulverized-coal fired boiler, which is composed of a support, a motor, a material inlet, a barrel, a first bin, a single-layer separating plate, a second bin, a material outlet and a steel ball. Materials enter the barrel from the material inlet, the steel ball is filled in the barrel which rotates to generate centrifugal force to enable the steel ball to be driven to a certain height and then fall, and the materials are thumped and milled. The materials is kibbled in the first bin and enter the second bin after passing through the single-layer separating plate, a flat lining plate is inlaid in the second bin, the steel ball is arranged in the flat lining plate, the materials are further milled, and powder-shaped objects are discharged through the material outlet, the discharged powder-shaped objects serve as fuel of the pulverized-coal fired boiler to enter a boiler hearth to be burned. The ball mill is installed in front of the pulverized-coal fired boiler to provide pulverized coal which is sufficiently mixed with air, flames in the boiler are prolonged, burning is more thorough and efficiency is higher.
Description
Technical field
The present invention relates to a kind of ball mill, particularly relate to a kind of ball mill that is used for pulverized-coal fired boiler.
Background technology
Pulverized-coal fired boiler is meant with the coal dust to be the outstanding burner of fuel.Its burner hearth is the large space that water cold hearth circummure becomes, and coal dust that grinds and air spray into the burner hearth burning after burner mixes.Coal-powder boiler need be equipped with coal-grinding equipment coal dust is provided; The coal-grinding equipment that present most of pulverized-coal fired boiler is equipped with is the formula coal pulverizer of milling; This coal pulverizer requires can not be mixed with iron block in the coal; Otherwise can damage coal pulverizer, yet coal tends to mix some iron blocks in recovery process, this has just formed the contradiction that exists between coal and the coal pulverizer.
Summary of the invention
The present invention provides a kind of ball mill that is used for pulverized-coal fired boiler, is used to address the above problem.
The present invention has adopted following technical scheme: ball mill is the key equipment of pulverizing again after material is broken, and is a kind of horizontal tubular whirligig.Material gets into grinding machine first storehouse by feed arrangement through pan feeding quill shaft spiral equably, in this storehouse ladder lining board is arranged, and the steel ball of interior dress different size, cylindrical shell rotate to produce and fall after centrifugal force takes steel ball to certain altitude, and material is produced bang and abrasive action.Material gets into second storehouse through single layer separator after first storehouse reaches corase grind, stud with flat liner plate in this storehouse, in steel ball is arranged, material is further ground, powder is discharged through discharging opening, accomplishes milling operation.
Ball mill generally is used for big machinery production, and the present invention installs ball mill coal dust is provided before pulverized-coal fired boiler, and coal dust fully mixes with air, and furnace flame prolongs, and it is more thorough to burn, and efficient is higher.
The present invention compares with existing common coal pulverizer; Have following beneficial effect: ball mill more is applicable to pulverized-coal fired boiler than common coal pulverizer, and ball mill utilizes hard steel ball can iron block be ground, when being mixed with iron block in the coal; Can wear into coal dust firing in the same old way; The iron powder that grinds has saved with the trouble that is mixed with iron block in artificial removal's coal along with ashes are blown burner hearth, increases work efficiency and economic benefit.
Description of drawings
Fig. 1 is an external structure sketch map of the present invention
Fig. 2 is an internal structure sketch map of the present invention
The specific embodiment
Like Fig. 1, shown in Figure 2, be used for the ball mill of pulverized-coal fired boiler, form by support 1, motor 2, charging aperture 3, cylindrical shell 4, first storehouse 5, single layer separator 6, second storehouse 7, discharging opening 8, steel ball 9.Material 11 enters into cylindrical shell 4 by charging aperture 3, and steel ball 9 is housed in the cylindrical shell, and cylindrical shell rotates to produce and falls after centrifugal force takes steel ball to certain altitude, and material is produced bang and abrasive action.Material gets into second storehouse 7 through single layer separator 6 after first storehouse 5 reaches corase grind, stud with flat liner plate in this storehouse; In steel ball is arranged; Material is further ground, and powder is discharged through discharging opening 8, and the granular material of discharge will enter into the boiler furnace internal combustion as the fuel of pulverized-coal fired boiler 10.
Claims (2)
1. a ball mill that is used for pulverized-coal fired boiler is made up of support (1), motor (2), charging aperture (3), cylindrical shell (4), first storehouse (5), single layer separator (6), second storehouse (7), discharging opening (8), steel ball (9); Material gets into ball mill by charging aperture (3), and steel ball (9) is housed in the cylindrical shell (4), can grind material, and the powder behind the mill is discharged through discharging opening (8).
2. according to the said a kind of ball mill that is used for pulverized-coal fired boiler of claim 1, it is characterized in that: before ball mill is installed on pulverized-coal fired boiler, the burner hearth internal combustion that the powder that comes out from ball mill discharging opening (8) gets into pulverized-coal fired boiler (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103059516A CN102357381A (en) | 2011-09-28 | 2011-09-28 | Ball mill for pulverized-coal fired boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103059516A CN102357381A (en) | 2011-09-28 | 2011-09-28 | Ball mill for pulverized-coal fired boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102357381A true CN102357381A (en) | 2012-02-22 |
Family
ID=45582793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103059516A Pending CN102357381A (en) | 2011-09-28 | 2011-09-28 | Ball mill for pulverized-coal fired boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102357381A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102698838A (en) * | 2012-06-11 | 2012-10-03 | 鄂尔多斯市东胜区传祥垃圾处理有限责任公司 | Application of ball-milling technology in garbage disposal process |
-
2011
- 2011-09-28 CN CN2011103059516A patent/CN102357381A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102698838A (en) * | 2012-06-11 | 2012-10-03 | 鄂尔多斯市东胜区传祥垃圾处理有限责任公司 | Application of ball-milling technology in garbage disposal process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120222 |