CN103480479A - Control device of ball mill - Google Patents
Control device of ball mill Download PDFInfo
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- CN103480479A CN103480479A CN201310451512.5A CN201310451512A CN103480479A CN 103480479 A CN103480479 A CN 103480479A CN 201310451512 A CN201310451512 A CN 201310451512A CN 103480479 A CN103480479 A CN 103480479A
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- ball mill
- control device
- hot air
- hot blast
- coal
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Abstract
The invention relates to a control device of a ball mill, in particular to an inlet hot air control device of a ball mill of a storage type pulverizing system in the middle of a coal-fired boiler. The control device of the ball mill comprises the ball mill, wherein an inlet of the ball mill is connected with a coal feeder; an outlet of the ball mill is connected with a powder discharge machine; the inlet of the ball mill is connected with a hot air pipeline; and a hot air adjusting valve is connected onto the hot air pipeline. The control device of the ball mill is characterized in that the two ends of the hot air adjusting valve are connected with bypasses; and hot air bypass adjusting valves are mounted on the bypasses. The control device of the ball mill has the benefit of guaranteeing that the inlet negative pressure and the outlet temperature of a coal mill are not changed greatly, so that the whole ball mill can operate for a long time safely, stably and reliably.
Description
(1) technical field
The present invention relates to a kind of ball mill control device, particularly a kind of coal-burning boiler intermediate storage-type Strategy of Ball Mill Coal Pulverizing System entrance hot blast control device.
(2) background technology
The intermediate storage-type Strategy of Ball Mill Coal Pulverizing System is a kind of coal powder grinding equipment, be subject to the impact of various different factors, operational factor constantly changes, and the ball mill outlet temperature is changed by humidity, coal pulverizer load, hot blast rate, the cold blast rate of coal-supplying amount, coal, the variation of recirculation air quantity; The ball mill entrance negative pressure is along with the variation of ball mill load, hot blast rate, cold blast rate, recirculation air quantity changes.Reason is that ball mill needs drier and the agent delivery of a large amount of hot blasts as coal dust, due to hot blast temperature and blast all very high, dust diameter is thick, the air door linear adjustment is poor, the hot air disperser aperture changes the impact of coal pulverizer outlet temperature and entrance negative pressure not only fast but also greatly, the simple hot-blast main's adjustment doors of leaning on can't meet ball mill outlet temperature and the control of entrance negative pressure accurate parameters, has increased coal pulverizer outlet temperature and entrance negative pressure and has controlled difficulty.
(3) summary of the invention
The present invention is in order to make up the deficiencies in the prior art, provide a kind of simple in structure, easy to adjust, guarantee that ball mill entrance negative pressure and outlet temperature not there will be significantly the ball mill control device that changes, can guarantee ball mill safety and stability reliability service.
The present invention is achieved through the following technical solutions:
A kind of ball mill control device, comprise ball mill, the ball mill porch connects feeder, exit connects mill exhauster, the ball mill porch connects hot air duct, be connected with the hot blast adjustment doors on hot air duct, it is characterized in that: described hot blast adjustment doors two ends are connected with bypass, and hot blast bypass adjustment doors is installed in bypass.
Be in series with the hot blast cut-off gate on described hot air duct, be parallel with cold-air flap.
The invention has the beneficial effects as follows: the total door of hot blast coarse adjustment for main force's air quantity, carry out fine tuning with little bypass air door, can guarantee that coal pulverizer inlet negative pressure and outlet temperature not there will be significantly variation, make the reliable and stable operation of whole ball mill long-term safety.
(4) accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Accompanying drawing 1 is structural representation of the present invention;
In figure, 1 ball mill, 2 feeders, 3 mill exhausters, 4 hot air ducts, 5 hot blast adjustment doors, 6 bypasses, 7 hot blast bypass adjustment doors, 8 hot blast cut-off gates, 9 cold-air flaps.
(5) specific embodiment
Accompanying drawing is a kind of specific embodiment of the present invention.This embodiment comprises ball mill 1, and ball mill 1 porch connects feeder 2, and exit connects mill exhauster 3, ball mill 1 porch connects hot air duct 4, be connected with hot blast adjustment doors 5 on hot air duct 4, hot blast adjustment doors 5 two ends are connected with bypass 6, and hot blast bypass adjustment doors 7 is installed in bypass 6.Be in series with hot blast cut-off gate 8 on hot air duct 4, be parallel with cold-air flap 9.
Adopt a kind of ball mill control device of the present invention, main hot blast pitch is that hot blast adjustment doors 5 adopts original tongue type baffle plate constant, install a little bypass 6 additional on hot blast main road 4, a little air quantity is installed simultaneously, the guide-vane baffle door that linear adjustment is good is hot blast bypass adjustment doors 7, main hot air disperser and bypass air door are used in conjunction with, in the pulverized coal preparation system initial start stage, the ventilation needed is large, control 80% air quantity by hot blast adjustment doors 5, after normal operation, to adopt little bypass air door be hot blast bypass adjustment doors 7(with 20% air quantity) do the fine tuning fine setting, reach effective control and ask the purpose of grinding machine 1 entrance negative pressure and outlet temperature even running, fully can long-term safety stable operation by the ball mill control device after innovation.
Claims (2)
1. a ball mill control device, comprise ball mill (1), ball mill (1) porch connects feeder (2), exit connects mill exhauster (3), ball mill (1) porch connects hot air duct (4), be connected with hot blast adjustment doors (5) on hot air duct (4), it is characterized in that: described hot blast adjustment doors (5) two ends are connected with bypass (6), and hot blast bypass adjustment doors (7) is installed in bypass (6).
2. a kind of ball mill control device according to claim 1, is characterized in that: be in series with hot blast cut-off gate (8) on described hot air duct (4), be parallel with cold-air flap (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310451512.5A CN103480479B (en) | 2013-09-29 | 2013-09-29 | A kind of control device of ball mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310451512.5A CN103480479B (en) | 2013-09-29 | 2013-09-29 | A kind of control device of ball mill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103480479A true CN103480479A (en) | 2014-01-01 |
| CN103480479B CN103480479B (en) | 2016-02-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310451512.5A Active CN103480479B (en) | 2013-09-29 | 2013-09-29 | A kind of control device of ball mill |
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| CN (1) | CN103480479B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106994386A (en) * | 2017-05-08 | 2017-08-01 | 山东中实易通集团有限公司 | The early warning of medium-speed pulverizer chute blockage and automatic processing device and method |
| CN108097388A (en) * | 2017-12-27 | 2018-06-01 | 唐山博全实业有限公司 | A kind of ball mill heating plant and heat supply method |
Citations (8)
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|---|---|---|---|---|
| US4177950A (en) * | 1978-02-16 | 1979-12-11 | Westinghouse Electric Corp. | Control for a power plant coal mill pulverizer having feedforward damper positioning |
| JPH09253518A (en) * | 1996-03-22 | 1997-09-30 | Mitsubishi Heavy Ind Ltd | Operation of horizontal mill and horizontal mill |
| CN1958166A (en) * | 2006-11-21 | 2007-05-09 | 东北电力大学 | Test control unit of milling system of ball mill |
| CN200938838Y (en) * | 2006-08-04 | 2007-08-29 | 武汉烟草(集团)有限公司 | Hot air circulating system of returning feeding apparatus |
| CN101269350A (en) * | 2008-04-25 | 2008-09-24 | 东南大学 | Operation optimizing and energy-saving control method for intermediate storage iron shot mill flour milling system |
| JP2011218279A (en) * | 2010-04-08 | 2011-11-04 | Kobe Steel Ltd | Method for crushing coal |
| CN202655077U (en) * | 2012-01-09 | 2013-01-09 | 李德忠 | Returned powder milling dynamic efficient separation system of steel ball coal mill |
| CN203525846U (en) * | 2013-09-29 | 2014-04-09 | 山东奥能电力科技有限公司 | Ball mill control device |
-
2013
- 2013-09-29 CN CN201310451512.5A patent/CN103480479B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4177950A (en) * | 1978-02-16 | 1979-12-11 | Westinghouse Electric Corp. | Control for a power plant coal mill pulverizer having feedforward damper positioning |
| JPH09253518A (en) * | 1996-03-22 | 1997-09-30 | Mitsubishi Heavy Ind Ltd | Operation of horizontal mill and horizontal mill |
| CN200938838Y (en) * | 2006-08-04 | 2007-08-29 | 武汉烟草(集团)有限公司 | Hot air circulating system of returning feeding apparatus |
| CN1958166A (en) * | 2006-11-21 | 2007-05-09 | 东北电力大学 | Test control unit of milling system of ball mill |
| CN101269350A (en) * | 2008-04-25 | 2008-09-24 | 东南大学 | Operation optimizing and energy-saving control method for intermediate storage iron shot mill flour milling system |
| JP2011218279A (en) * | 2010-04-08 | 2011-11-04 | Kobe Steel Ltd | Method for crushing coal |
| CN202655077U (en) * | 2012-01-09 | 2013-01-09 | 李德忠 | Returned powder milling dynamic efficient separation system of steel ball coal mill |
| CN203525846U (en) * | 2013-09-29 | 2014-04-09 | 山东奥能电力科技有限公司 | Ball mill control device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106994386A (en) * | 2017-05-08 | 2017-08-01 | 山东中实易通集团有限公司 | The early warning of medium-speed pulverizer chute blockage and automatic processing device and method |
| CN108097388A (en) * | 2017-12-27 | 2018-06-01 | 唐山博全实业有限公司 | A kind of ball mill heating plant and heat supply method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103480479B (en) | 2016-02-24 |
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Address after: Building 103-3, building 15, Qilu cultural and creative base, No.101, Shunfeng Road, Jinan area, China (Shandong) pilot Free Trade Zone, Jinan City, Shandong Province Patentee after: Shandong AoMiao Technology Development Co.,Ltd. Address before: 250101 Shandong city of Ji'nan province high tech Zone Xinyu Road on the west side of the AB century wealth center room 602 Patentee before: SHANDONG AONENG ELECTRIC POWER SCIENCE & TECHNOLOGY Co.,Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A ball mill control device Effective date of registration: 20221101 Granted publication date: 20160224 Pledgee: Qilu bank Limited by Share Ltd. Ji'nan science and technology innovation center sub branch Pledgor: Shandong AoMiao Technology Development Co.,Ltd. Registration number: Y2022980020398 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |