CN103934088A - Efficient and energy-saving vertical mill grading system - Google Patents

Efficient and energy-saving vertical mill grading system Download PDF

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Publication number
CN103934088A
CN103934088A CN201410132664.3A CN201410132664A CN103934088A CN 103934088 A CN103934088 A CN 103934088A CN 201410132664 A CN201410132664 A CN 201410132664A CN 103934088 A CN103934088 A CN 103934088A
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CN
China
Prior art keywords
air
vertical mill
valve
mill
powder concentrator
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Pending
Application number
CN201410132664.3A
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Chinese (zh)
Inventor
李双跃
雍正
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SEEKER SCIENCE AND TECHNOLOGY DEVELOPMENT Co Ltd
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SEEKER SCIENCE AND TECHNOLOGY DEVELOPMENT Co Ltd
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Application filed by SEEKER SCIENCE AND TECHNOLOGY DEVELOPMENT Co Ltd filed Critical SEEKER SCIENCE AND TECHNOLOGY DEVELOPMENT Co Ltd
Priority to CN201410132664.3A priority Critical patent/CN103934088A/en
Publication of CN103934088A publication Critical patent/CN103934088A/en
Pending legal-status Critical Current

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Abstract

The invention discloses an efficient and energy-saving vertical mill grading system. The system is achieved by additionally setting a recirculation air device on the basis of the existing vertical mill grader, wherein the inlet of the recirculation fan is connected with a harvester fan and the outlet is connected with a valve at the air inlet of the mill through a recirculation air valve, and the air volume of the vertical mill grading system can be changed by adjusting the frequency of the recirculation fan. In comparison with the existing technical scheme, the invention solves the problems of improving yield and precision, saving energy and lowering consumption by fully utilizing the existing process system.

Description

A kind of energy-efficient Vertical Mill hierarchy system
Technical field
The present invention relates to Vertical Mill grader, particularly the wind loop structure of grader.
Background technology
In cement slurry and coal mill production process, due to unreasonable production output, energy consumption and Product Precisions of having a strong impact on of process system parameter matching such as powder concentrator gateway air quantity and blast and powder concentrator rotating speeds.Powder concentrator air intake vent air quantity directly affects qualified particle in mill and under negative pressure system effect, imports powder concentrator graded region, when system works, as too low in powder concentrator entrance air quantity, a part does not arrive stepped zone containing material gas, cause circulation in material in unnecessary mill, cause energy consumption of mill to increase, yield reducation; The qualified particle that the direct impact of air outlet of powder concentrator air quantity enters powder concentrator is selected under negative pressure system effect, when system works, as too low in powder concentrator outlet air quantity, the qualified particle of a part rests in powder concentrator, the qualified particle of a part is returned grinding machine, cause equally circulation in material in unnecessary mill, cause grinding machine and powder concentrator energy consumption to increase, yield reducation; Powder concentrator rotating speed directly affects Product Precision, and the higher sharpness of separation of rotating speed is high, when system works, can reduce circulation in qualified material in mill by improving powder concentrator rotating speed, improves powder concentrator effectiveness of classification and improves output.
Summary of the invention
The present invention is mainly for often occur at present qualified particle that grinding machine the grinds powder concentrator of can not high efficiencyly making a gift to someone in cement slurry and coal grinding process system, the problem that powder concentrator can not high efficiencyly out cause qualified grain sorting and yield poorly, energy consumption is high, precision is low, by the improvement to its structure, a kind of energy-efficient Vertical Mill hierarchy system is provided, realize and improve output and precision, reach the object that reduces energy consumption.
Technical scheme of the present invention is: a kind of energy-efficient Vertical Mill hierarchy system, it is characterized in that, and it is to realize by setting up circulated air device on the basis at existing Vertical Mill grader.It comprises air-heater 1, Hot-blast valve 2, grinding machine air intake vent valve 3, Vertical Mill 4, roller mill separator 5, elevator 6, conveyer 7, proportioner 8, cyclone cylinder 9, cyclone cylinder outlet valve 10, circulating fan 11, circulated air valve 12, dust-precipitator 13, dust-precipitator air outlet valve 14, harvest device blower fan 15, the entrance of its circulating fan 11 is connected with harvest device blower fan 15 and exports and be connected with grinding machine air intake vent valve 3 by circulated air valve 12, regulates circulating fan 11 frequencies can change Vertical Mill grading technology systematic air flow.
When system works, material enters Vertical Mill 4 by proportioner 8, conveyer 7, elevator 6, Vertical Mill 4 is by crushing material, and pulverized material enters roller mill separator 5 under air-negative-pressure effect, and powder concentrator sorts out qualified material powder to bring cyclone cylinder 9 into by air-flow and be collected as product; In system, a part of air-flow enters Vertical Mill 4 by air-heater 1, material is dried simultaneously, another part air-flow is controlled and is entered powder concentrator gateway air quantity and outlet air quantity by circulating fan 11 and circulated air valve 12, and some air-flow enters the air-flow that meets discharge standard in atmosphere under 15 effects of harvest device blower fan; Sub-fraction qualified products are collected by harvest device 13 simultaneously.
As too low in powder concentrator outlet air quantity, in powder concentrator, qualified particle rests in powder concentrator, and a part of qualified particle is returned grinding machine, causes the interior circulation of material in powder concentrator and mill to increase, and causes grinding machine and powder concentrator energy consumption to increase, yield reducation; System in a word time, is selected to meet under standard value screen over-size maximum condition, powder concentrator load (electric current) minimum of a value, pressure reduction minimum of a value and the grinding machine circulating fan 11(frequency of current value at that time) as the best regulated value of rear powder concentrator outlet air quantity.
Because circulated air valve 12 is connected with circulating fan 11 outlets and Vertical Mill air quantity entrance (being also powder concentrator air quantity entrance), change circulated air valve 12 apertures and can change Vertical Mill entrance air quantity, also changed powder concentrator entrance air quantity simultaneously, can Vertical Mill entrance air force directly affects qualified particle in mill import roller mill separator under negative pressure system effect, as too low in Vertical Mill entrance air quantity, the qualified particle of a part does not arrive graded region, cause circulation increase in material in mill, cause energy consumption of mill to increase, yield reducation; Selection meets under standard value screen over-size maximum condition, powder concentrator load (electric current) maximum, mill load (electric current) minimum of a value, and the peaked optimum cycle wind debugging of pressure reduction valve 12 opening values are as the best regulated value of grinding machine entrance air quantity.
Powder concentrator influence of rotation speed grading precision, the higher sharpness of separation of rotating speed is high, when system works, can, by improving particle that powder concentrator rotating speed ensures that powder concentrator sorts out in standard value range, improve powder concentrator effectiveness of classification.Selection meets under standard value screen over-size maximum condition, and while selecting pressure reduction minimum of a value, grinding machine between powder concentrator load (electric current) minimum of a value, powder concentrator and machine at full capacity, current value is as the regulated value of best powder concentrator 5 (frequency).
The present invention is by setting up circulated air device on the basis at existing Vertical Mill grader, under certain grinding machine entrance air quantity condition by Vertical Mill in the qualified particle powder concentrator of making a gift to someone in time, reduce cycle down low energy consumption in mill and improve output; Under certain powder concentrator outlet air quantity condition by powder concentrator in qualified particle be sorted out in time, improve powder concentrator classification efficiency and improve output, also reduce circulating load in powder concentrator simultaneously; Under certain powder concentrator speed conditions, obtain the sharpness of separation of high yield and low energy consumption, solve and made full use of existing process system resource and improve output and precision, energy-saving and cost-reducing problem.The method, by probation in Chuan Mei lotus Cement Co., Ltd project reconstruction, can reach goal of the invention completely.
Brief description of the drawings
The present invention also can be described further in conjunction with application example.Figure of description is one embodiment of the present of invention.In figure
1 is that air-heater, 2 is that Hot-blast valve, 3 is that grinding machine air intake vent valve, 4 is that Vertical Mill, 5 is that roller mill separator, 6 is that elevator, 7 is that conveyer, 8 is that proportioner, 9 is that cyclone cylinder, 10 is that cyclone cylinder outlet valve, 11 is that circulating fan, 12 is that circulated air valve, 13 is that dust-precipitator, 14 is that dust-precipitator air outlet valve, 15 is harvest device blower fan 15.
Detailed description of the invention
One embodiment of the present invention are as shown in Figure of description, and it is to realize by setting up circulated air device on the basis at existing Vertical Mill grader, and its circulated air device is made up of circulating fan 11 and circulated air valve 12.It comprises air-heater 1, Hot-blast valve 2, grinding machine air intake vent valve 3, Vertical Mill 4, roller mill separator 5, elevator 6, conveyer 7, proportioner 8, cyclone cylinder 9, cyclone cylinder outlet valve 10, circulating fan 11, circulated air valve 12, dust-precipitator 13, dust-precipitator air outlet valve 14, harvest device blower fan 15, the entrance of its circulating fan 11 is connected with harvest device blower fan 15 and exports and be connected with grinding machine air intake vent valve 3 by circulated air valve 12, regulates circulating fan 11 frequencies can change Vertical Mill grading technology systematic air flow.

Claims (2)

1. an energy-efficient Vertical Mill hierarchy system, is characterized in that, it is to realize by setting up the circulated air device being made up of circulating fan (11) and circulated air valve (12) on the basis at existing Vertical Mill grader.
2. energy-efficient Vertical Mill hierarchy system according to claim 1, comprise air-heater (1), Hot-blast valve (2), grinding machine air intake vent valve (3), Vertical Mill (4), roller mill separator (5), elevator (6), conveyer (7), proportioner (8), cyclone cylinder (9), cyclone cylinder outlet valve (10), circulating fan (11), circulated air valve (12), dust-precipitator (13), dust-precipitator air outlet valve (14), harvest device blower fan (15), it is characterized in that, the entrance of its circulating fan (11) is connected with harvest device blower fan (15) and exports and be connected with grinding machine air intake vent valve (3) by circulated air valve (12), regulate circulating fan (11) frequency can change Vertical Mill grading technology systematic air flow.
CN201410132664.3A 2014-04-03 2014-04-03 Efficient and energy-saving vertical mill grading system Pending CN103934088A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410132664.3A CN103934088A (en) 2014-04-03 2014-04-03 Efficient and energy-saving vertical mill grading system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410132664.3A CN103934088A (en) 2014-04-03 2014-04-03 Efficient and energy-saving vertical mill grading system

Publications (1)

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CN103934088A true CN103934088A (en) 2014-07-23

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108554551A (en) * 2018-04-25 2018-09-21 济源市中特陶瓷材料有限公司 A kind of more rotor large size Ultrafine Jet Milling classifying integrated machines
CN109530072A (en) * 2018-11-09 2019-03-29 南京工程学院 A method of on-line monitoring pulverized coal preparation system comprehensive energy efficiency

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002273250A (en) * 2001-03-22 2002-09-24 Ricoh Co Ltd Toner manufacturing system
CN102189024A (en) * 2010-03-01 2011-09-21 大唐华银株洲发电有限公司 Compound pulverizing system based on coal pulverizer
CN102327804A (en) * 2011-07-06 2012-01-25 洛阳宇航重工机械有限公司 Closed type production line device and method for crushing aluminum oxide crusted blocks
CN203155301U (en) * 2013-04-10 2013-08-28 高县天顺建材有限责任公司 Combined sorting vertical mill
CN203355856U (en) * 2013-06-14 2013-12-25 宝兴易达光伏刃料有限公司 Airflow grader
CN203853154U (en) * 2014-04-03 2014-10-01 绵阳西金科技发展有限公司 Efficient energy-saving vertical mill classifier

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002273250A (en) * 2001-03-22 2002-09-24 Ricoh Co Ltd Toner manufacturing system
CN102189024A (en) * 2010-03-01 2011-09-21 大唐华银株洲发电有限公司 Compound pulverizing system based on coal pulverizer
CN102327804A (en) * 2011-07-06 2012-01-25 洛阳宇航重工机械有限公司 Closed type production line device and method for crushing aluminum oxide crusted blocks
CN203155301U (en) * 2013-04-10 2013-08-28 高县天顺建材有限责任公司 Combined sorting vertical mill
CN203355856U (en) * 2013-06-14 2013-12-25 宝兴易达光伏刃料有限公司 Airflow grader
CN203853154U (en) * 2014-04-03 2014-10-01 绵阳西金科技发展有限公司 Efficient energy-saving vertical mill classifier

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108554551A (en) * 2018-04-25 2018-09-21 济源市中特陶瓷材料有限公司 A kind of more rotor large size Ultrafine Jet Milling classifying integrated machines
CN109530072A (en) * 2018-11-09 2019-03-29 南京工程学院 A method of on-line monitoring pulverized coal preparation system comprehensive energy efficiency
CN109530072B (en) * 2018-11-09 2020-11-10 南京工程学院 Method for monitoring comprehensive energy efficiency of powder making system on line

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Application publication date: 20140723