CN102009041B - Wind powder-selecting system for column mill - Google Patents
Wind powder-selecting system for column mill Download PDFInfo
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- CN102009041B CN102009041B CN201010505424A CN201010505424A CN102009041B CN 102009041 B CN102009041 B CN 102009041B CN 201010505424 A CN201010505424 A CN 201010505424A CN 201010505424 A CN201010505424 A CN 201010505424A CN 102009041 B CN102009041 B CN 102009041B
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Abstract
The invention relates to a wind powder-selecting system for a column mill. The wind powder-selecting system for the column mill comprises a controller, a frequency converter, a circulating fan and a powder-selecting machine which are connected with one another sequentially. When powder-selecting granularity is adjusted, the controller adjusts the three-phase power supply frequency of the frequency converter according to a preset adjusting curve, so that the rotating speed of the circulating fan is adjusted, the total quantity of wind entering the powder-selecting machine is changed and the powder-selecting granularity is adjusted. The wind powder-selecting system for the column mill also comprises a feed port, a scattering grille, an air outlet, a double-cyclone separator and a return chute, wherein the scattering grille is arranged below the feed port and ensures that materials from the feed port can fall uniformly; the double-cyclone separator is connected with the air outlet; smaller-granularity powder in the materials falling off the scattering grille enters the double-cyclone separator from the air outlet; the return chute is connected below the powder-selecting machine; and overlarge-granularity powder in the materials falling off the scattering grille enters the return chute. The wind powder-selecting system for the column mill can precisely adjust the powder-selecting granularity and effectively guarantee the quality of product.
Description
Technical field
The present invention relates to the column mill field, particularly the winnowing powder system of column mill.
Background technology
Referring to Fig. 1, the winnowing powder system of existing column mill is shown, comprise air blast 11, inlet air door 12 and powder concentrator 13.Adopt a 132KW motor drives air blast 11 to provide wind regime to select powder for waterfall streaming powder concentrator 13.During work, powder to be selected gets into from powder concentrator 13 top charging apertures, and certified products are blown out from the side discharging opening by wind, and the material that particle diameter exceeds requirement can't be blown out and discharge from powder concentrator 13 lower discharge ports.
Need regulate when selecting powder to spend, regulate the aperture of inlet air door 12, and then the size of change intake realizes selecting the adjusting (the unit intake increases then product granularity increase, otherwise then product granularity reduces) of powder degree.But; This adjustment process is to need the artificial on-site manual that arrives to regulate inlet air door 12, and in adjustment process, air blast 11 rotating speeds do not change; Though the intake of unit interval changes; But not linear change, regulate accuracy and be difficult to control that Granularity Distribution is difficult to reach the grading curve of customer requirements.
Summary of the invention
The object of the invention provides a kind of winnowing powder system of column mill, and this winnowing powder system can be realized effectively guaranteeing product quality to selecting the accurate adjusting of powder degree.
The winnowing powder system of a kind of column mill of the present invention; Comprise the controller, frequency converter, circulating fan and the powder concentrator that connect successively: regulate when selecting powder to spend; Controller is regulated the three phase mains frequency of frequency converter by the adjustment curve that presets; And then the rotating speed of adjusting circulating fan, the total blast volume that gets into powder concentrator is changed, the powder degree is selected in adjustment.
Preferably, the air outlet of said circulating fan connects said powder concentrator through air inlet.
Preferably, said air inlet is provided with the wind-supplying mouth that is used to protect air balance.
Preferably, said circulating fan air outlet is provided with exhaust column, is used for the part air circulation is extracted out.
Preferably, said exhaust column is connected with bagroom, the part circulated air dedusting that bagroom is extracted out exhaust column.
Preferably, said winnowing powder system also comprises charging aperture and is arranged on the grid of breaing up of charging aperture below, breaks up grid the material that gets into from charging aperture is evenly fallen.
Preferably, said winnowing powder system also comprises air outlet, and the bispin wind separator that links to each other with air outlet, and the thinner powder of granularity gets into bispin wind separator from going out one's intention as revealed in what one says from the material of breaing up the grid whereabouts.
Preferably, said winnowing powder system also comprises and is connected the feed back elephant trunk that selects blower fan below, and the excessive powder of particle gets into the feed back elephant trunk from break up the material that grid falls.
Compared with prior art, the present invention has the following advantages:
The present invention is in adjustment process; Controller can be realized the accurate adjusting of converter power supply frequency, the linear ratio of the rotating speed of converter power supply frequency and circulating fan, the rotating speed of circulating fan and the linear ratio of total blast volume that gets into powder concentrator; Therefore, can realize selecting the accurate adjusting of powder degree.Degree of regulation can be 1/5000, has effectively guaranteed product quality.
Description of drawings
Fig. 1 is the winnowing powder system sketch map of existing column mill;
Fig. 2 selects the powder system structure chart for column mill of the present invention;
Fig. 3 selects the powder system sketch map for column mill of the present invention;
Fig. 4 is a product granularity curve map of the present invention.
The specific embodiment
For make above-mentioned purpose of the present invention, feature and advantage can be more obviously understandable, below in conjunction with accompanying drawing and the specific embodiment the present invention done further detailed explanation.
Referring to Fig. 2, column mill of the present invention is shown selects the powder system structure, the material after column mill is pulverized leans on from focusing on and breaks up on the grid 7 evenly to fall from charging aperture 5 feeding waterfall stream powder concentrators 6.Because the draft effect of circulating fan 3 makes waterfall flow and is negative pressure state in the powder concentrator 6.The air-flow that sucks from air inlet 2 pass break up grid with its on material after discharge from air outlet 11.Selecting in the powder housing at material under the effect of air-flow and to realize coarse and fine separation, the thinner powder of granularity is inhaled into bispin wind separator 10 with air-flow from air outlet; And the excessive powder of particle returns column mill reprocessing from the bottom through feed back elephant trunk 13 under the gravity effect.
Get into bispin wind separator 10 what contain that grey air-flow separates that the back discharges from the bottom through solid, gas is the qualified product of granularity, a part of thinner ash content with the wind from top by sucking-off through the backwind tube circulating fan of reentrying.
For the enough negative pressure of assurance system, on the circulated air pipeline, install exhaust column 4 additional in 2 meters of circulating fan air outlet, 1/2～1/3 of air circulation to be extracted out, the wind of extraction enters atmosphere after bagroom 9 dedustings.The fine powder of collecting can be used for stove foreign cigarette qi exhaustion sulphur.
For keeping the systematic air flow balance, before the air inlet of powder concentrator, install wind-supplying mouth 1 additional.
The present invention sets up special converter for circulating fan, changes rotating speed of motor through the frequency that changes power supply, and then changes waterfall streaming powder concentrator intake, finally reaches the purpose that changes the finished product granularity.
Referring to Fig. 3, column mill of the present invention is shown selects powder system, comprise the controller 20, frequency converter 21, circulating fan 22 and the powder concentrator 23 that connect successively.
Need to regulate when selecting powder to spend; Start-up control device 20, the three phase mains frequency that controller 20 is regulated frequency converter 21 by the adjustment curve that presets, and then the rotating speed of adjusting circulating fan 22; The total blast volume that gets into powder concentrator 23 is changed, realize adjusting the purpose of selecting the powder degree.
In this adjustment process; Controller 20 can be realized the accurate adjusting of frequency converter 21 supply frequencies; The linear ratio of rotating speed of frequency converter 21 supply frequencies and circulating fan 22; Therefore the rotating speed of circulating fan 22 and the linear ratio of total blast volume that gets into powder concentrator 23, can be realized selecting the accurate adjusting of powder degree.Degree of regulation can be 1/5000, has effectively guaranteed product quality.See Fig. 4, the finished product granularity adjustable accuracy that makes of frequency converter 21 increases, and the product granularity curve more approaches this dragon curve difficult to understand.
The present invention adopts controller 20 to control, and can long-rangely adjust, centralized Control, avoids the person of sending someone to operate the various inconvenience that cause to on-the-spot.The present invention has improved effective use power ratio of motor owing to adopt converter technique to regulate the rotating speed of circulating fan, has reduced consumption, under the condition of ordinary production, can practice thrift a large amount of electricity charge for annual every.
The above is merely preferred implementation of the present invention, does not constitute the qualification to protection domain of the present invention.Any any modification of within spirit of the present invention and principle, being done, be equal to replacement and improvement etc., all should be included within the claim protection domain of the present invention.
Claims (2)
1. the winnowing powder system of a column mill is characterized in that, comprises the controller (20), frequency converter (21), circulating fan (22) and the powder concentrator (23) that connect successively; Said circulating fan (22) has air outlet (11) and air inlet (2), and said air inlet is provided with the wind-supplying mouth (1) that is used to protect air balance; The air outlet of said circulating fan is provided with exhaust column (4), is used for 1/2～1/3 of air circulation is extracted out; Said exhaust column is connected with bagroom (9), the part circulated air dedusting that bagroom is extracted out exhaust column; What said winnowing powder system also comprised charging aperture (5) and was arranged on charging aperture below breaks up grid (7), breaks up grid the material that gets into from charging aperture is evenly fallen; Said winnowing powder system also comprises the bispin wind separator (10) that links to each other with air outlet, and the thinner powder of granularity gets into bispin wind separator from air outlet from the material of breaing up the grid whereabouts; Get into bispin wind separator (10) what contain that grey air-flow separates that the back discharges from the bottom through solid, gas is the qualified product of granularity, a part of thinner ash content with the wind from top by sucking-off through the backwind tube circulating fan of reentrying; Said winnowing powder system also comprises the feed back elephant trunk (13) that is connected the powder concentrator below, and the excessive powder of particle gets into the feed back elephant trunk from the material of breaing up the grid whereabouts;
When adjusting selected powder to spend, the three phase mains frequency that controller is regulated frequency converter by the adjustment curve that presets, and then the rotating speed of adjusting circulating fan changed the total blast volume that gets into powder concentrator, and the powder degree is selected in adjustment.
2. winnowing powder system as claimed in claim 1 is characterized in that the air outlet of said circulating fan connects said powder concentrator through air inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010505424A CN102009041B (en) | 2010-10-13 | 2010-10-13 | Wind powder-selecting system for column mill |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010505424A CN102009041B (en) | 2010-10-13 | 2010-10-13 | Wind powder-selecting system for column mill |
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| CN102009041A CN102009041A (en) | 2011-04-13 |
| CN102009041B true CN102009041B (en) | 2012-10-10 |
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| CN201010505424A Active CN102009041B (en) | 2010-10-13 | 2010-10-13 | Wind powder-selecting system for column mill |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103331264A (en) * | 2013-06-24 | 2013-10-02 | 合肥中亚建材装备有限责任公司 | Method for realizing cascade lifting periodical change of rotating speed of dynamic powder concentrator |
| CN103521333B (en) * | 2013-09-29 | 2015-08-26 | 长沙深湘通用机器有限公司 | A kind of to pulverize and two-stage sorting process and pulverizing and two-stage separation system |
| CN103495482A (en) * | 2013-09-29 | 2014-01-08 | 长沙深湘通用机器有限公司 | Smashing and sorting technology as well as smashing and sorting system |
| CN104384007B (en) * | 2014-11-12 | 2017-01-25 | 中冶焦耐工程技术有限公司 | Process and device for preparing lime powder for KR desulfurizing agent |
| CN104475338A (en) * | 2014-12-13 | 2015-04-01 | 溧阳市正翔精密机械有限公司 | Air separation impurity remover |
| CN107511248A (en) * | 2017-08-25 | 2017-12-26 | 长沙深湘通用机器有限公司 | Crush the process with unit sorting multi-product |
| CN107716301A (en) * | 2017-11-29 | 2018-02-23 | 阳泉中创陶粒有限公司 | A kind of pneumatic separation device for reducing foundry sand clay content |
| CN113289759B (en) * | 2021-06-01 | 2022-07-15 | 浙江大学 | Method and device for regulating and controlling particle size distribution of micro powder in dry grinding system |
| CN115264518A (en) * | 2022-08-01 | 2022-11-01 | 陕西延长石油（集团）有限责任公司 | Particle size grading dry coal powder preparation device and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2709036Y (en) * | 2004-06-03 | 2005-07-13 | 陈书亚 | Powderless birotor powder selecting machine |
| US7262632B2 (en) * | 2005-03-31 | 2007-08-28 | Intel Corporation | Signal measurement systems and methods |
| CN101269348A (en) * | 2007-03-21 | 2008-09-24 | 湖南省电力粉煤灰开发有限公司 | Novel technique for producing limestone powder |
| CN101497057A (en) * | 2009-02-27 | 2009-08-05 | 韩思进 | Coarse powder-controlling, deironing and conveying device for close circuit grinding and circulating system as well as method of use thereof |
| CN201541705U (en) * | 2009-09-02 | 2010-08-11 | 湖北中烟工业有限责任公司 | Cut tobacco pneumatic conveying on-line control system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2755338B2 (en) * | 1991-07-09 | 1998-05-20 | 宇部興産株式会社 | Crushing equipment |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2709036Y (en) * | 2004-06-03 | 2005-07-13 | 陈书亚 | Powderless birotor powder selecting machine |
| US7262632B2 (en) * | 2005-03-31 | 2007-08-28 | Intel Corporation | Signal measurement systems and methods |
| CN101269348A (en) * | 2007-03-21 | 2008-09-24 | 湖南省电力粉煤灰开发有限公司 | Novel technique for producing limestone powder |
| CN101497057A (en) * | 2009-02-27 | 2009-08-05 | 韩思进 | Coarse powder-controlling, deironing and conveying device for close circuit grinding and circulating system as well as method of use thereof |
| CN201541705U (en) * | 2009-09-02 | 2010-08-11 | 湖北中烟工业有限责任公司 | Cut tobacco pneumatic conveying on-line control system |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平5-15805 1993.01.26 |
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