CN1608745A - Dynamic coal milling powder-selecting machine - Google Patents
Dynamic coal milling powder-selecting machine Download PDFInfo
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- CN1608745A CN1608745A CN 200410087660 CN200410087660A CN1608745A CN 1608745 A CN1608745 A CN 1608745A CN 200410087660 CN200410087660 CN 200410087660 CN 200410087660 A CN200410087660 A CN 200410087660A CN 1608745 A CN1608745 A CN 1608745A
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Abstract
The present invention relates to mechanical sieving apparatus, and the apparatus consists of upper cone, middle cylinder and lower cone connected with flanges. The driving mechanism in the upper part of the apparatus has motor, planetary gear, rotor shaft and rotor comprising rotating vane wheel and connected cylinder frame. The middle cylinder has adjustable blades, and the adjustable blades, the rotor and the inner cone form certain motion interval. There are fine powder airflow outlet in the upper cone, coal powder airflow inlet in the lower cone, and inner conic barrel inside the lower cone and connected to the lower coarse powder outlet. The present invention has the advantages of raised coal powder fineness, raised coal powder yield, and lowered power consumption.
Description
Technical field
The present invention relates to a kind of mechanical screening plant, be mainly used in the coal dust that coal dust preparation system is swept after the coal barreling grinds wind in the cement production process and screen, trade name of the present invention is a MDX type dynamic coal milling powder-selecting machine.
Background technology
According to State Statistics Bureau's statistics, the whole nation possesses the above cement production enterprise of scale and has 4740 families, and every family has several production lines not wait, and in the coal dust preparation system of these up to ten thousand production lines, almost all adopts the static mill separator that falls behind poor efficiency.Old-fashioned mill separator screening process is static, can only separate meal is disposable according to the scope of adjusting in advance, and then return the barreling mill.When firing system changes the requirement of fineness of pulverized coal, coal then unavoidably can occur and grind grinding phenomenon or underproduce, influence is burnt till.Certainly will strengthen coal mill load, increase energy consumption, and quality of pc is also unstable.Will directly influence the thermal regulation of firing system like this, influence cement clinker quality.
By retrieval, China's utility model patent 01206828.4 discloses a kind of dynamic coal milling powder-selecting machine, the hypomere of this device is inside and outside double layer sleeve barrel, inner core is the air intake tube, urceolus is the meal surge drum, the stage casing is that inside and outside two-layer inverted cone and the separator that is contained in its top are formed, the separator of this device is by the stator blade that is contained in its enclosure, and the inboard central area of blade is equipped with the rotor with profiled blade that is had by the speed reducer output shaft end and constitutes, and its graded region field width, fineness is easy to control, sorting quality is high, be convenient to maintenance.
Summary of the invention
The purpose of this invention is to provide a kind of be different from prior art can regulate continuously, have that rotor stepped zone, fineness of pulverized coal can be controlled, reliable, energy-efficient dynamic coal milling powder-selecting machine.
Dynamic coal milling powder-selecting machine, it is characterized in that: this device contour structures is a upper cone 4, middle cylindrical shell 15, lower cone 16 usefulness flanges are formed by connecting, transmission device is positioned at device top, connect planetary gear 8 transmissions by motor 1, planetary gear 8 connects rotor shaft 5, rotor shaft connects rotor 6, rotor 6 connects cylinder-shaped frame 10 by rotary blade 9 and forms (Fig. 2), cylinder-shaped frame 10 is to be provided with by vertical circumferencial direction between the inside and outside two-layer cylinder-shaped frame evenly to be provided with dividing plate 11 and to constitute, cylinder-shaped frame 10 outside be provided with the special-shaped adjustable vane 7 that certain angle of inclination is arranged with the cylinder circumference, special-shaped adjustable vane 7, rotor 6, the inner core cone of middle cylindrical shell forms certain movement clearance; Be provided with fine powder air stream outlet 12 in the upper cone side, be provided with lubricating oil pipe 3 and escape pipe 2 on rotor shaft 5 tops; The lower cone bottom is provided with breeze airflow air inlet 12, is provided with an inner conical-tube 14 in the lower cone, and the inner conical-tube bottom connects meal discharging opening 13 (Fig. 1, Fig. 2).
Novelty of the present invention and creativeness are embodied in: utilize aerodynamics, hydrokinematics principle, according to particle force-bearing situation in machine, adopt special-shaped adjustable vane, rotor and inner core cone, widened stepped zone, realized that dynamic type regulates continuously.The relative motion gap of rotor and last lower cone, cylindrical shell is through tightly measuring and calculating.Meal returns mill, and dust-precipitator is collected fine powder and formed closed-circuit system because wind is swept the coal mill, has improved the output that wind is swept the coal mill, reduced energy consumption, and fineness is easy to control, the sorting quality height, and working environment improves greatly.
The beneficial effect that the present invention compared with prior art has is:
1) can improve fineness of pulverized coal, reduce meal and tail over.During 90 μ m, can be controlled at below 5%;
2) can improve the output that wind is swept the coal mill, reduce specific energy consumption 15-20%;
3) grog be can improve and fuel combustion speed and efficient burnt till;
4) can widen the firing system fuel scope of application, reduce fuel cost;
5) mill separator of alternative old-fashioned poor efficiency has the advantage that fund input is few, the transformation cycle is short, economic benefit is high;
6) being specially adapted to newly-built coal dust preparation system, is the comparatively desirable dynamic coal milling powder-selecting machine of newly-built coal dust preparation system.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is that A-A of the present invention is to cutaway view.
The specific embodiment
See Fig. 1, Fig. 2, operation principle of the present invention is: sweep coal by wind and gall air inlet 12 broken, that coal dust after grinding enters dynamic coal milling powder-selecting machine with the wind, enter rotary blade 9 through adjustable vane 7, under the effect of its rotation, pulverized coal particle is subjected to the effect of three power: quality, centrifugal force, buoyancy.Big particle is big because of its quality, centrifugal force big, buoyancy is relatively little, under centrifugal action, is got rid of to adjustable vane 7, falls into inner conical-tube 14 because of losing kinetic energy behind the bump, discharges through discharging opening 13.The coal dust that particle is little is little because of its quality, centrifugal force is little, buoyancy is big relatively, is then discharged by fine powder air stream outlet 12 with the distinguished and admirable of come-up, is collected as the finished product fine breeze through dust-precipitator again.
The adjustment of fineness of pulverized coal is to adjust the rotating speed that motor rotates rotary blade by frequency converter: when the rotating speed raising, then fineness of pulverized coal attenuates; Otherwise rotating speed is turned down, then fineness of pulverized coal chap.Simultaneously also can be: when blade angle is transferred greatly (be blade dextrorotation to), then fineness of pulverized coal chap by adjusting the angle of adjustable vane; Otherwise blade angle is turned (being the counterclockwise rotation direction of blade) down, and then fineness of pulverized coal attenuates.
The control of air quantity size had both influenced coal dust output height, and also influence the fineness of pulverized coal thickness: when air quantity increased, then output increased, the coal dust chap; Otherwise when air quantity reduced, then output reduced, and coal dust attenuates.If when the output of finished product coal dust and fineness were all had certain requirement, the air quantity of reply blower fan and the rotating speed of dynamic coal milling powder-selecting machine rotor were united adjustment accordingly and are realized.
Claims (1)
1, dynamic coal milling powder-selecting machine, it is characterized in that: this device contour structures is that upper cone, middle cylindrical shell, lower cone are formed by connecting with flange, transmission device is positioned at device top, connect the planetary gear transmission by motor, planetary gear connects rotor shaft, rotor shaft connects rotor, rotor connects cylinder-shaped frame by rotary blade and forms, on framework, evenly be provided with dividing plate, rotor is located in the middle cylindrical shell, be provided with special-shaped adjustable vane in the middle cylindrical shell, the inner core cone of special-shaped adjustable vane, rotor, middle cylindrical shell forms certain movement clearance; Be provided with the fine powder air stream outlet in the upper cone side, be provided with lubricating oil pipe and escape pipe on rotor shaft top; The lower cone bottom is provided with the breeze airflow air inlet, is provided with an inner conical-tube in the lower cone, and the inner conical-tube bottom connects the meal discharging opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410087660 CN1269580C (en) | 2004-11-25 | 2004-11-25 | Dynamic coal milling powder-selecting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410087660 CN1269580C (en) | 2004-11-25 | 2004-11-25 | Dynamic coal milling powder-selecting machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1608745A true CN1608745A (en) | 2005-04-27 |
| CN1269580C CN1269580C (en) | 2006-08-16 |
Family
ID=34766061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410087660 Expired - Fee Related CN1269580C (en) | 2004-11-25 | 2004-11-25 | Dynamic coal milling powder-selecting machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1269580C (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102564137A (en) * | 2012-01-04 | 2012-07-11 | 洛阳洛华窑业有限公司 | P03 discharging device for high-temperature separator of gaseous aluminum hydroxide suspension calciner |
| CN103028547A (en) * | 2012-12-25 | 2013-04-10 | Lv技术工程(天津)有限公司 | Splitting type rotor for powder concentrator and manufacturing process of splitting type rotor |
| CN106064150A (en) * | 2016-07-27 | 2016-11-02 | 无锡市华通电力设备有限公司 | A kind of rotary flyash Special grading machine |
| CN106079150A (en) * | 2016-06-30 | 2016-11-09 | 重庆浩立塑胶有限公司 | Feeding material choosing apparatus |
| CN104307645B (en) * | 2014-10-09 | 2017-01-11 | 苏州可纳粉体技术有限公司 | Centrifugal grader with blade inclination adjustable grading wheel |
| US9714591B2 (en) | 2011-10-20 | 2017-07-25 | Alfa Laval Corporate Ab | Crankcase gas separator |
| CN108772208A (en) * | 2018-04-26 | 2018-11-09 | 太重煤机有限公司 | Lump coal separation device |
| CN108787184A (en) * | 2018-05-11 | 2018-11-13 | 道真自治县仡山御田生态农业发展有限公司 | Rice paddy seed removal of impurities screening plant |
| CN113171982A (en) * | 2021-04-15 | 2021-07-27 | 合肥水泥研究设计院有限公司 | Multi-product mechanical wind power combined powder concentrator |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032585B (en) * | 2010-12-01 | 2013-03-20 | 云南电力技术有限责任公司 | Integrated pulverized coal separation and concentration device of pulverized-coal boiler |
-
2004
- 2004-11-25 CN CN 200410087660 patent/CN1269580C/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9714591B2 (en) | 2011-10-20 | 2017-07-25 | Alfa Laval Corporate Ab | Crankcase gas separator |
| CN102564137A (en) * | 2012-01-04 | 2012-07-11 | 洛阳洛华窑业有限公司 | P03 discharging device for high-temperature separator of gaseous aluminum hydroxide suspension calciner |
| CN102564137B (en) * | 2012-01-04 | 2015-11-04 | 洛阳洛华窑业有限公司 | A kind of aluminium hydroxide steam state suspension roaster high-temperature separator P0 3drawing mechanism |
| CN103028547A (en) * | 2012-12-25 | 2013-04-10 | Lv技术工程(天津)有限公司 | Splitting type rotor for powder concentrator and manufacturing process of splitting type rotor |
| CN103028547B (en) * | 2012-12-25 | 2015-01-07 | Lv技术工程(天津)有限公司 | Splitting type rotor for powder concentrator and manufacturing process of splitting type rotor |
| CN104307645B (en) * | 2014-10-09 | 2017-01-11 | 苏州可纳粉体技术有限公司 | Centrifugal grader with blade inclination adjustable grading wheel |
| CN106079150A (en) * | 2016-06-30 | 2016-11-09 | 重庆浩立塑胶有限公司 | Feeding material choosing apparatus |
| CN106064150A (en) * | 2016-07-27 | 2016-11-02 | 无锡市华通电力设备有限公司 | A kind of rotary flyash Special grading machine |
| CN108772208A (en) * | 2018-04-26 | 2018-11-09 | 太重煤机有限公司 | Lump coal separation device |
| CN108787184A (en) * | 2018-05-11 | 2018-11-13 | 道真自治县仡山御田生态农业发展有限公司 | Rice paddy seed removal of impurities screening plant |
| CN113171982A (en) * | 2021-04-15 | 2021-07-27 | 合肥水泥研究设计院有限公司 | Multi-product mechanical wind power combined powder concentrator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1269580C (en) | 2006-08-16 |
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060816 |