CN104759412A - Adjustable dynamic rotary separator for coal mill - Google Patents
Adjustable dynamic rotary separator for coal mill Download PDFInfo
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- CN104759412A CN104759412A CN201510190904.XA CN201510190904A CN104759412A CN 104759412 A CN104759412 A CN 104759412A CN 201510190904 A CN201510190904 A CN 201510190904A CN 104759412 A CN104759412 A CN 104759412A
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- stator blade
- coal
- separator
- dynamic rotary
- rotary separator
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Abstract
The invention relates to a coal powder separator, in particular to an adjustable dynamic rotary separator for a coal mill. The adjustable dynamic rotary separator is characterized in that a distributor is arranged at the lower portion of a driving portion, the interior of the driving portion is connected with a hollow shaft, the lower portion of the distributor is connected with a shell cover plate, the hollow shaft is connected with a guide cone, and moving blades are arranged on the guide cone; a coal dropping pipe is arranged inside the guide cone and connected with a ceramic liner; the upper end of a stationary blade shaft is a hexagonal prism, an elastic cylindrical pin penetrates through the stationary blade shaft and then limits a pointer disc, and the other end of the stationary blade shaft penetrates through a shell cover plate hole and then is fixedly connected through a bolt penetrating through stationary blades. Finer coal powder can be separated out from coal powder through the separator. The separator has the advantages of increasing the capacity of the mill, and improving the coal powder uniformity, thereby improving the boiler combustion efficiency and lowering the unburned carbon in flue dust, and therefore the purposes of improving the coal powder fineness and uniformity indexes, finally improving the boiler combustion efficiency and lowering the unburned carbon in flue dust are achieved.
Description
Technical field
The present invention relates to a kind of coal dust classifier, be specially the adjustable dynamic rotary separator of a kind of coal pulverizer for coal pulverizer.
Background technology
Through State Patent Office's query and search, finding that there is an Authorization Notice No. is CN203875010, and name is called a kind of high-efficiency dynamic separator, and its design feature is: static vane and multiple exit dispensing arrangement, can not play and effectively be separated thick, fine powder effect.Fineness of pulverized coal improves, and pulverizer capacity declines, and output drop rate is far longer than fineness increase rate, and complex structure.
Summary of the invention
The object of the present invention is to provide a kind of structure simple, with low cost, simple to operate, easy to maintenance, effectively can be separated the adjustable dynamic rotary separator of coal pulverizer that is thick, fine powder.The object of the present invention is achieved like this: comprise drive division, coal spout, separator flour extraction pipe, distributor, housing, stator blade bobbin, axle bed, moving vane, return powder cone, wear-resistant ceramic, stator blade, ceramic liner, hollow shaft, housing cover, starting taper, elastic cylindrical pin, needle dial, pointer, sleeve pipe, bolt, back shaft, nut, it is characterized in that: described drive division bottom is provided with distributor, inside is connected with hollow shaft, distributor bottom is connected with described housing cover, and described hollow shaft is connected with described starting taper; Starting taper is provided with described moving vane.Be provided with coal spout in described starting taper, coal spout is connected with described ceramic liner.Described stator blade bobbin upper end is six prisms, and described elastic cylindrical pin limits needle dial through after stator blade bobbin, and the described stator blade bobbin other end is fixedly connected with through stator blade by bolt through after case lid plate hole.Described cylindrical screw is connected with housing cover tapped blind hole through needle dial, sleeve pipe, pointer, and bolt is fixedly connected with stator blade through stator blade bobbin.Bolt connects stator blade through described back shaft, and described back shaft coordinates with axle bed czermak space, and back shaft bottom is equiped with packing ring, and axle bed ring is bored with described time powder and is connected, and the described powder cone inner surface that returns is lined with wear-resistant ceramic.Described housing and Flange joint, bolt is fixedly connected with nut through described housing cover, flange.Described stator blade adjustable angle, adjusting range is 45 ° ~ 70 °, and described moving vane rotating speed is adjustable, and adjusting range is 30rpm ~ 300rpm, stator blade bobbin and axle bed matched in clearance, and gap is 0.01mm ~ 2mm.The advantage that the present invention relates to is: structure is simple, with low cost, simple to operate, easy to maintenance.The separator of more fine breeze is isolated from coal dust.There is increase pulverizer capacity, improve the coal dust uniformity thus reach raising boiler combustion efficiency, reduce the characteristic of unburned carbon in flue dust.The adjustable dynamic rotary separator of coal pulverizer, multiple exit dispenser location is replaced with dynamic impeller, the basis of original static separation increases the function of a Dynamic Separation, and qualified coal dust is separated discharge faster, decreases the recirculation coal dust that separator produces.The present invention can realize wheel speed and regulate, coal dust can be made in Gravity Separation, clash into and be separated, be folded under inertial separation and centrifugal force forces to be separated etc. and act on, decline in mill Inner eycle multiplying power, flowing resistance does not increase, separator stator blade is adjustable simultaneously, these can reach and improve fineness of pulverized coal and uniformity index, finally reach raising boiler combustion efficiency, reduce the object of unburned carbon in flue dust.
Accompanying drawing explanation
Fig. 1 is structural principle schematic front view of the present invention; Fig. 2 is the structural principle schematic diagram that the stator blade bobbin of partial enlarged drawing A of the present invention is connected with axle bed; Fig. 3 is the structural principle schematic diagram that the back shaft of partial enlarged drawing B of the present invention coordinates with axle bed ring; Fig. 4 is the structural principle schematic diagram of the hollow shaft of partial enlarged drawing C of the present invention and starting taper, coal spout; Fig. 5 is the structural principle schematic diagram that the present invention's starting taper of the present invention is connected with moving vane.
Detailed description of the invention
Comprise drive division 1, coal spout 2, separator flour extraction pipe 3, distributor 4, housing 5, stator blade bobbin 6, axle bed 7, moving vane 8, return powder cone 9, wear-resistant ceramic 10, stator blade 11, ceramic liner 12, hollow shaft 13, housing cover 14, starting taper 15, elastic cylindrical pin 16, needle dial 17, pointer 18, sleeve pipe 19, bolt 21, back shaft 22, nut 26, it is characterized in that: described drive division 1 bottom is provided with distributor 4, distributor 4 bottom is connected with described housing cover 14, and described hollow shaft 13 is connected with described starting taper 15; Starting taper 15 is provided with described moving vane 8.Be provided with coal spout 2 in described starting taper 15, coal spout 2 is connected with described ceramic liner 12.Described stator blade bobbin 6 upper end is six prisms, and described elastic cylindrical pin 16 limits needle dial 17 through after stator blade bobbin 6, and the described stator blade bobbin other end is fixedly connected with through stator blade by bolt through after case lid plate hole.Described stator blade bobbin 6 other end is fixedly connected with through stator blade 11 by bolt 21 through behind housing cover 14 hole.Described cylindrical screw 20 is connected with housing cover 14 tapped blind hole through needle dial 17, sleeve pipe 19, pointer 18, and bolt 21 is fixedly connected with stator blade 11 through stator blade bobbin 6.Bolt 21 connects stator blade 11 through described back shaft 22, described back shaft 22 and axle bed ring 23 matched in clearance, back shaft 22 bottom is equiped with packing ring 24, and axle bed ring 23 is bored 9 with described time powder and is connected, and described time powder is bored 9 inner surfaces and is lined with wear-resistant ceramic 10.Described housing 5 is connected with flange 21, and bolt 21 is fixedly connected with nut 26 through described housing cover 14, flange 21.Described stator blade 11 adjustable angle, adjusting range is 45 ° ~ 70 °, and described moving vane 8 rotating speed is adjustable, and adjusting range is 30rpm ~ 300rpm, and stator blade bobbin 6 and axle bed 7 matched in clearance, gap is 0.01mm ~ 2mm.Below in conjunction with accompanying drawing in detail preferred embodiment and operation principle, the course of work are described in detail: distributor 4 is provided with drive division 1, separator flour extraction pipe 3, and drive division 1 is provided with frequency control motor 25.Drive division 1 bottom is provided with distributor 4, distributor 4 bottom is welded with housing cover 14, drive division 1 is connected with hollow shaft 13 bolt, hollow shaft 13 is welded with starting taper 15, starting taper 15 is provided with moving vane 8, coal spout 2 is provided with in starting taper 15, coal spout 2 is connected with ceramic liner 12, stator blade bobbin 6 and axle bed 7 matched in clearance, gap is 0.01mm ~ 2mm, bolt 21 is through axle bed 7, be connected with housing cover 14 tapped blind hole, stator blade bobbin 6 upper end is six prisms, six prisms are through needle dial 17, elastic cylindrical pin 16 limits needle dial 17 through six prisms, long cylinder screw rod 20 is through needle dial 17, sleeve pipe 19 is threaded with housing cover 14, bolt 21 is through pointer 18, axle bed 7 is connected with housing cover 14 tapped blind hole, stator blade bobbin 6 is connected with stator blade 11 bolt, back shaft 22 connects and is connected with stator blade 11 bolt, back shaft 22 and axle bed ring 23 matched in clearance, back shaft 22 bottom is equiped with packing ring 24, axle bed ring 23 is bored 9 with time powder and is connected, return powder to bore 9 inner surfaces and be lined with wear-resistant ceramic 10, housing 5 and flange 26 are welded to connect, housing cover 14 is connected with nut 28 by bolt 21 with flange 26.Separator drive division 1 adopts gear reduction structure, and variable-frequency motor drives, stator blade 11 adjustable angle.
When the present invention works, when wind coal mixtures passes through stator blade 11, be subject to stator blade 11 and stop the eddy current forming wind coal mixtures, the centrifugal force produced by eddy current changes direction and the speed of pulverized coal particle.Thus, impel bulky grain coal dust to leave breeze airflow and fall back in powder cone 9, bore 9 inwalls and raw coal to be mixed feeding coal pulverizer along returning powder.The aperture of adjustment stator blade 6 plate can change the flow field regulation of wind coal mixtures, thus changes and powder fineness.The breeze airflow entering region between stator blade 11 and moving vane 8 is under impeller runs up and drives, and pulverized coal particle is raised speed instantaneously, and coarse granule coal dust, under centrifugal force and moving vane 8 effect of impact, departs from breeze airflow and enters back powder and bore 9 bottoms.Satisfactory coal dust enters boiler through dynamic impeller through separator flour extraction pipe 3.Moving vane 8 rotates, and qualified coal dust is got rid of faster, decreases the recirculation powder that separator produces, improves separative efficiency.Stator blade 11 is adjustable, by regulating stator blade 11 angle, can improve the regulating power to fineness of pulverized coal, reaching raising boiler combustion efficiency, reduces the object of unburned carbon in flue dust.
Claims (7)
1. the adjustable dynamic rotary separator of coal pulverizer, comprise drive division, coal spout, separator flour extraction pipe, distributor, housing, stator blade bobbin, axle bed, moving vane, return powder cone, wear-resistant ceramic, stator blade, ceramic liner, hollow shaft, housing cover, starting taper, elastic cylindrical pin, needle dial, pointer, sleeve pipe, bolt, back shaft, nut, it is characterized in that: described drive division bottom is provided with distributor, inside is connected with hollow shaft, distributor bottom is connected with described housing cover, and described hollow shaft is connected with described starting taper; Starting taper is provided with described moving vane.
2. the adjustable dynamic rotary separator of a kind of coal pulverizer according to claim 1, it is characterized in that: be provided with coal spout in described starting taper, coal spout is connected with described ceramic liner.
3. the adjustable dynamic rotary separator of a kind of coal pulverizer according to claim 1, it is characterized in that: described stator blade bobbin upper end is six prisms, described elastic cylindrical pin limits needle dial through after stator blade bobbin, and the described stator blade bobbin other end is fixedly connected with through stator blade by bolt through after case lid plate hole.
4. the adjustable dynamic rotary separator of a kind of coal pulverizer according to claim 1, is characterized in that: described cylindrical screw is connected with housing cover tapped blind hole through needle dial, sleeve pipe, pointer, and bolt is fixedly connected with stator blade through stator blade bobbin.
5. the adjustable dynamic rotary separator of a kind of coal pulverizer according to claim 1, it is characterized in that: bolt connects stator blade through described back shaft, described back shaft coordinates with axle bed czermak space, back shaft bottom is equiped with packing ring, axle bed ring is bored with described time powder and is connected, and the described powder cone inner surface that returns is lined with wear-resistant ceramic.
6. the adjustable dynamic rotary separator of a kind of coal pulverizer according to claim 1, is characterized in that: described housing and Flange joint, and bolt is fixedly connected with nut through described housing cover, flange.
7. the adjustable dynamic rotary separator of a kind of coal pulverizer according to claim 1, it is characterized in that: described stator blade adjustable angle, adjusting range is 45 ° ~ 70 °, described moving vane rotating speed is adjustable, adjusting range is 30rpm ~ 300rpm, stator blade bobbin and axle bed matched in clearance, gap is 0.01mm ~ 2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510190904.XA CN104759412B (en) | 2015-04-21 | 2015-04-21 | Coal pulverizer scalable dynamic rotary separator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510190904.XA CN104759412B (en) | 2015-04-21 | 2015-04-21 | Coal pulverizer scalable dynamic rotary separator |
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| CN104759412A true CN104759412A (en) | 2015-07-08 |
| CN104759412B CN104759412B (en) | 2016-08-24 |
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| CN201510190904.XA Active CN104759412B (en) | 2015-04-21 | 2015-04-21 | Coal pulverizer scalable dynamic rotary separator |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104998726A (en) * | 2015-08-18 | 2015-10-28 | 芜湖奕辰模具科技有限公司 | Coal mill for boiler |
| CN105396780A (en) * | 2015-12-22 | 2016-03-16 | 蔡赞区 | Wind pulling area enlarged powder selecting dust collector system and powder selecting dust collecting method thereof |
| CN108698088A (en) * | 2016-02-29 | 2018-10-23 | 通用电器技术有限公司 | System, method and the equipment of flow distribution for controlling solid particle |
| CN109174422A (en) * | 2018-09-04 | 2019-01-11 | 北京慧峰仁和科技股份有限公司 | A kind of coal pulverizer and method improving pulverized coal fineness |
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| CN202893678U (en) * | 2012-11-07 | 2013-04-24 | 北京北交富沃机电工程科技有限公司 | Novel movable and static combined rotary separator for powder coal |
| CN202962872U (en) * | 2012-11-30 | 2013-06-05 | 黄立娜 | Device for milling and dynamically sorting recovered powder by means of classification at high efficiency for intermediate-speed coal mill |
| CN204564571U (en) * | 2015-04-21 | 2015-08-19 | 黑龙江迪科电站技术有限公司 | The adjustable dynamic rotary separator of coal pulverizer |
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2015
- 2015-04-21 CN CN201510190904.XA patent/CN104759412B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20040084556A1 (en) * | 2002-11-04 | 2004-05-06 | Alstom (Switzerland) Ltd | Hybrid turbine classifier |
| CN200954503Y (en) * | 2006-10-09 | 2007-10-03 | 邢传 | Coal-powder separator |
| CN101380631A (en) * | 2007-09-04 | 2009-03-11 | 上海重型机器厂有限公司 | Separator for coal mill |
| CN202506603U (en) * | 2011-12-27 | 2012-10-31 | 华北电力大学（保定） | Variable-cross section bending torsion movable blade rotary coal powder separator |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104998726A (en) * | 2015-08-18 | 2015-10-28 | 芜湖奕辰模具科技有限公司 | Coal mill for boiler |
| CN105396780A (en) * | 2015-12-22 | 2016-03-16 | 蔡赞区 | Wind pulling area enlarged powder selecting dust collector system and powder selecting dust collecting method thereof |
| CN108698088A (en) * | 2016-02-29 | 2018-10-23 | 通用电器技术有限公司 | System, method and the equipment of flow distribution for controlling solid particle |
| CN108698088B (en) * | 2016-02-29 | 2022-04-26 | 通用电器技术有限公司 | System, method and apparatus for controlling flow distribution of solid particles |
| CN109174422A (en) * | 2018-09-04 | 2019-01-11 | 北京慧峰仁和科技股份有限公司 | A kind of coal pulverizer and method improving pulverized coal fineness |
| CN109174422B (en) * | 2018-09-04 | 2023-05-05 | 北京慧峰仁和科技股份有限公司 | Coal mill and method for improving uniformity of coal dust |
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| CN104759412B (en) | 2016-08-24 |
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| TR01 | Transfer of patent right |
Effective date of registration: 20180423 Address after: 150001 1 factory building 4358 Songbei two street, Harbin, Heilongjiang Patentee after: Harbin Lizhong mill coal machine technology Co., Ltd. Address before: 150000 4358 Chi Chi Road, Songbei, Harbin, Heilongjiang Patentee before: Heilongjiang Dike Power Station Technology Co., Ltd. |
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Effective date of registration: 20191230 Address after: 150038 No. 50 Xiangfang Road, Xiangfang District, Heilongjiang, Harbin Patentee after: Harbin Boshen Science & Technology Development Co., Ltd. Address before: 1500001 workshop 1, No. 4358, Zhigu Second Street, Songbei District, Harbin City, Heilongjiang Province Patentee before: Harbin Lizhong mill coal machine technology Co., Ltd. |
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