CN109092684A - high-efficient powder concentrator - Google Patents
high-efficient powder concentrator Download PDFInfo
- Publication number
- CN109092684A CN109092684A CN201810990816.1A CN201810990816A CN109092684A CN 109092684 A CN109092684 A CN 109092684A CN 201810990816 A CN201810990816 A CN 201810990816A CN 109092684 A CN109092684 A CN 109092684A
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- Prior art keywords
- air inlet
- cage
- outer barrel
- inner cylinder
- shell
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
- B07B7/08—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force
- B07B7/083—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force generated by rotating vanes, discs, drums, or brushes
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Abstract
The invention discloses a kind of high-efficient powder concentrators, including vertical and coaxially arranged inner cylinder, outer barrel, the upper section chamber of the inner cylinder is disposed with cage-type rotor vertically, and the upper section peripheral wall of inner cylinder is provided with guide vane, is provided with first charging aperture and air outlet above the cage-type rotor；The upper section peripheral wall of the outer barrel is connected to air inlet charging shell, air inlet charging shell be in from top to bottom inclined wedge type and air inlet charging shell outer side edges obliquely with outer barrel join, the upper end of air inlet charging shell is provided with second charging aperture, air inlet, and the inner cavity of air inlet charging shell, which is provided with, breaks up deflector.Powder is selected by what a complete wind path completed two material tubes, has been achieved the purpose that fine powder multipass sort, but only with a set of equipment, structure arrangement is simple, improves working efficiency.
Description
Technical field
The present invention relates to grinding system machinery equipment field, in particular to a kind of high-efficient powder concentrator.
Background technique
Currently, grinding technology is widely used in cement industry grinding raw material, clinker, or is used for electric power and coal chemical industry powder
Grind the raw coal and steel plant's grinding blast-furnace cinder and steel slag etc. of various qualities.Grinding and to select powder be entire grinding process system
In very important two process flows, selecting powder technology is even more to directly affect entire grinding system efficiency and final products quality
An important factor for.The powder concentrator different from structure there are many specification, the structure for including have respective difference in the market.
The cage-type rotor formula powder concentrator of existing vertical rotating is mainly the single of representative with " O-Sepa type powder concentrator "
Cage-type rotor formula air sorting machine for powder, a spreading are primary to sort.This powder concentrator mostly forms closed circuit circulatory system with ball mill,
The finished product that ball mill produces is selected.
V-type powder concentrator is the capital equipment that granular material sorts in grinding system of the building materials field with roll squeezer or Vertical Mill,
Application No. is 201620177699.3 Chinese patents to disclose a kind of V-type powder concentrator comprising has blanking shell, air inlet shell
Body, scattering and grading blade group select powder shell, outlet air shell etc..This V-type powder concentrator mainly pass through inlet shell air inlet and
The air outlet of outlet air shell realizes fine powder sorting.
Combination grinding is the present main method for carrying out the production of the dusty materials such as cement, and existing Joint grinding system makes more
Add the dynamic powder concentrator with cage-type rotor to carry out material particular diameter screening with V-type powder concentrator, carries out finished product receipts using bagroom
Collection；Some Joint grinding systems carry out stock grading using three separation and centrifugal classifier, in order to improve the essence of stock grading
Degree, often requires to use multiple powder concentrators, and each powder concentrator needs to set up individual circulating fan and provides required for powder concentrator
Circulating air duct, energy consumption are very big.
Summary of the invention
The purpose of the present invention is to provide a kind of high-efficient powder concentrators, select powder process synthesis in one script needs multistage
In equipment, realizes that V-type powder concentrator adds the function of cage-type rotor powder concentrator, promote working efficiency, and reduce production cost.
To achieve the goals above, the present invention takes following technical scheme: a kind of high-efficient powder concentrator, including vertical and coaxial
Inner cylinder, the outer barrel of arrangement, the upper section chamber of the inner cylinder are disposed with cage-type rotor, the upper section peripheral wall of inner cylinder vertically
It is provided with guide vane, is provided with first charging aperture and air outlet above the cage-type rotor；The outer barrel it is upper
Duan Zhoubi with air inlet charging shell be connected to, air inlet charging shell be in from top to bottom inclined wedge type and air inlet feed shell outer side edges obliquely with
Outer barrel handover, the upper end of air inlet charging shell are provided with second charging aperture, air inlet, and the inner cavity of air inlet charging shell, which is provided with, breaks up
Deflector.
Spreading disk is provided with above the cage-type rotor, the feed inlet is arranged in above the outer ring of spreading disk,
The air outlet is arranged in above the inner ring of spreading disk.
Organic frame is arranged in the top of inner cylinder, is provided with motor and retarder interconnected in rack, retarder is equipped with
Shaft straight down passes through air outlet and connect with spreading disk, cage-type rotor.
The air inlet is located at the outside arrangement of air inlet charging shell, and air inlet is directed toward outer barrel obliquely, second into
Material mouth leans on the disposed inboard of air inlet.
The air inlet charging shell is at least disposed with one, and enters the wind the circumferential phase of charging shell and the upper section peripheral wall of outer barrel
Arrangement is cut, air inlet, which is directed toward inner cylinder, the clip cavity of outer barrel is dried to form and the consistent eddy flow of cage-type rotor steering.
The inner wall for breaing up the opposite air inlet charging shell of deflector tilts down arrangement.
The lower section of the inner cylinder, outer barrel is respectively disposed with the first reclaiming cone, the second reclaiming cone.
In above-mentioned technical proposal, it is equipped with inner cylinder, outer barrel, is then respectively equipped with first charging aperture, second charging aperture, one
Road material via second charging aperture enter air inlet charging shell, air inlet charging shell and outer barrel constitute half V-shape, wind by air inlet into
Enter powder concentrator, material under gravity downwards with break up deflector and mutually impact and break up, weight and thick powder directly falls
Discharge, at the same time under the action of the forces of the wind, light and thin powder with wind through breaing up deflector tangentially enter outer barrel with it is interior
The clip cavity of cylinder, then enters the chamber of inner cylinder by guide vane, and cage-type rotor rotates to form horizontal vortex；Another way object
Material enters in cage-type rotor via first charging aperture, and cage-type rotor and inner cylinder constitute main powder-separating area, and material is in gravity, centrifugal force
And under the comprehensive function of centripetal force, centrifugal force suffered by slightly thick powder is big, along inner cylinder inner wall fall be discharged, thinner powder with the wind into
Enter inside cage-type rotor, powder concentrator is discharged via air outlet, selects powder by what a complete wind path completed two material tubes, reach
It has arrived the purpose of fine powder multipass sort, but only with a set of equipment, structure arrangement is simple, improves working efficiency.
Detailed description of the invention
Fig. 1 is arrangement schematic diagram of the present invention；
Fig. 2 is top view of the present invention；
Fig. 3 is air inlet charging shell structure schematic diagram.
Specific embodiment
In conjunction with Fig. 1 ~ 3 pair, the present invention is made further instructions:
A kind of high-efficient powder concentrator, including vertical and coaxially arranged inner cylinder 10, outer barrel 20, the upper section of the inner cylinder 10
Chamber is disposed with cage-type rotor 11 vertically, and the upper section peripheral wall of inner cylinder 10 is provided with guide vane 12, the cage-type rotor 11
Top be provided with first charging aperture 13 and air outlet 14；The upper section peripheral wall and air inlet charging shell 30 of the outer barrel 20 connect
Logical, air inlet charging shell 30 joins with outer barrel 20 in the outer side edges of inclined wedge type and air inlet charging shell 30 obliquely from top to bottom, into
The upper end of wind charging shell 30 is provided with second charging aperture 31, air inlet 32, and the inner cavity of air inlet charging shell 30, which is provided with, breaks up water conservancy diversion
Plate 33.
Equipped with inner cylinder 10, outer barrel 20, it is then respectively equipped with first charging aperture 13, second charging aperture 31, all the way material
Enter air inlet charging shell 30 via second charging aperture 31, air inlet charging shell 30 and outer barrel 20 constitute half V-shape, and wind is by air inlet
32 enter powder concentrator, material under gravity downwards with break up 32 phase of deflector impact and break up, weight and thick powder is straight
Whereabouts discharge is connect, at the same time under the action of the forces of the wind, light and thin powder is as wind is by breaing up deflector 5 tangentially into outer cylinder
The clip cavity of body 20 and inner cylinder 10, then enters the chamber of inner cylinder 10 by guide vane 12, and the rotation of cage-type rotor 11 is formed
Horizontal vortex；Another way material enters in cage-type rotor 11 via first charging aperture 13, and cage-type rotor 11 and inner cylinder 10 are constituted
Main powder-separating area, material is under the comprehensive function of gravity, centrifugal force and centripetal force, and centrifugal force suffered by slightly thick powder is big, along inner cylinder
10 inner walls, which fall, to be discharged, and thinner powder enters with the wind inside cage-type rotor 11, and powder concentrator is discharged via air outlet 14, passes through one
What complete wind path completed two material tubes selects powder, has achieved the purpose that fine powder multipass sort, but only with a set of equipment,
Structure arrangement is simple, improves working efficiency.
The top of the cage-type rotor 11 is provided with spreading disk 15, and the feed inlet 13 is arranged in the outer of spreading disk 15
Circle top, the air outlet 14 are arranged in above the inner ring of spreading disk 15.Spreading disk 15 is provided with to make via the first charging
The material of mouth 13 is uniformly sprinkled into main powder-separating area.
Organic frame 40 is arranged in the top of inner cylinder 10, and motor 41 interconnected and retarder 42 are provided in rack 40,
Retarder 42 is equipped with shaft 43 straight down and connect across air outlet 14 with spreading disk 15, cage-type rotor 11.Pass through motor 41
Make shaft 43 that spreading disk 15, cage-type rotor 11 be driven to rotate synchronously with retarder 42, carries out spreading and select powder.
The air inlet 32 is located at the outside arrangement of air inlet charging shell 30, and air inlet 32 is directed toward outer barrel obliquely
20, second charging aperture 31 leans on the disposed inboard of air inlet 32.Air inlet 32 will tiltedly be directed toward outer barrel 20 and be blown into convenient for wind.
The air inlet charging shell 30 is at least disposed with one, and enter the wind the upper section peripheral wall of charging shell 30 and outer barrel 20
Circumferential tangent arrangement, air inlet 32 is directed toward inner cylinder 10, the clip cavity of outer barrel 20 is dried to be formed and be turned to unanimously with cage-type rotor 11
Eddy flow.Air inlet charging shell 30 be not necessarily to the tangent arrangement of outer barrel 20, but tangent arrangement is most preferably scheme, arrangement
Multiple air inlets feed shells 30, multiple co-operation of air inlets 32 are blown into wind, and arranged tangential can be in inner cylinder 10, outer barrel 20
Clip cavity forms eddy flow, while turning to unanimously with cage-type rotor 11, convenient for making the wind with fine powder enter cage by guide vane 12
In type rotor 11；The present invention arranges that there are two air inlet charging shells 30 as shown in attached drawing 1,2, and two air inlet charging shells 30 are relative to interior
Cylinder 10,20 central point central symmetry of outer barrel, can effectively form eddy flow in this way.
The inner wall for breaing up the opposite air inlet charging shell 30 of deflector 33 tilts down arrangement.It is more convenient in this way to material
Uniformly broken up.
The lower section of the inner cylinder 10, outer barrel 20 is respectively disposed with the first reclaiming cone 16, the second reclaiming cone 21.Wherein
The outer side edges of the side wall of second reclaiming cone 21 and air inlet charging shell 30 postpone handover, are convenient for collection to be broken up deflector 33 in this way and beat
Scattered coarse powder.
Wherein: the air inlet of the circumferentially distributed second charging aperture 31 of outer barrel 20 and the composition of air inlet 32 feeds shell 30, outside
Shape is in V-shape, and inside, which is densely covered with, breaks up deflector 33, which is static powder-separating area, has conventional and roller completely on the whole
The matched V-type powder concentrator function of press, second charging aperture 31 can be entirely coarse powder, enter back into master by the sorting of static powder-separating area
Powder-separating area sorting.The connection type of air inlet charging shell 30 and outer barrel 20 is tangentially connected；Cage-type rotor 11 is vertical direction cloth
The rigid multi-blade rotor of one set, the blade material of cage-type rotor 11 are wear-resisting steel plate, can by the rotation of cage-type rotor 11
It forms a horizontal vortex, constitutes the dynamic powder-separating area powder-separating area Ji Zhu, the top of cage-type rotor is provided with spreading disk 15, can will be upper
Square material dispersion is shed to form material curtain into main powder-separating area, and the upper end peripheral wall of the inner cylinder 10 opposite with cage-type rotor 11 circumferentially divides
Cloth guide vane 12, the wind entered from the air inlet 32 of air inlet charging shell 30 laggard becomes owner of choosing by the rectification of guide vane 12
Powder area, main powder-separating area is as fine sorting.
By reducing the combination of two powder-separating areas powder concentrator quantity and selecting powder link；It can be not only used for half whole grinding,
The static V-type powder concentrator being arranged in roll squeezer system can be replaced to add the complex process flow of dynamic powder concentrator completely.
Claims (7)
1. a kind of high-efficient powder concentrator, it is characterised in that: including vertical and coaxially arranged inner cylinder (10), outer barrel (20), institute
The upper section chamber for the inner cylinder (10) stated is disposed with cage-type rotor (11) vertically, and the upper section peripheral wall of inner cylinder (10) is provided with guiding
Blade (12) is provided with first charging aperture (13) and air outlet (14) above the cage-type rotor (11)；The outer cylinder
The upper section peripheral wall of body (20) is connected to air inlet charging shell (30), and air inlet charging shell (30) is from top to bottom in inclined wedge type and air inlet charging
The outer side edges of shell (30) join with outer barrel (20) obliquely, and the upper end of air inlet charging shell (30) is provided with second charging aperture
(31), air inlet (32), the inner cavity of air inlet charging shell (30), which is provided with, breaks up deflector (33).
2. high-efficient powder concentrator according to claim 1, it is characterised in that: be provided with above the cage-type rotor (11)
Spreading disk (15), the feed inlet (13) are arranged in above the outer ring of spreading disk (15), and the air outlet (14) is arranged in
Above the inner ring of spreading disk (15).
3. high-efficient powder concentrator according to claim 2, it is characterised in that: organic frame is arranged in the top of inner cylinder (10)
(40), motor interconnected (41) and retarder (42) are provided in rack (40), retarder (42) is equipped with straight down
Shaft (43) passes through air outlet (14) and connect with spreading disk (15), cage-type rotor (11).
4. high-efficient powder concentrator according to claim 1, it is characterised in that: the air inlet (32) is located at air inlet charging shell
(30) outside arrangement, and air inlet (32) is directed toward outer barrel (20) obliquely, second charging aperture (31) is by air inlet (32)
Disposed inboard.
5. high-efficient powder concentrator according to claim 4, it is characterised in that: air inlet charging shell (30) is at least disposed with
One, and the tangent arrangement of circumferential direction of the upper section peripheral wall of charging shell (30) and outer barrel (20) is entered the wind, air inlet (32) is directed toward inner cylinder
Body (10), outer barrel (20) clip cavity dry to be formed and turn to consistent eddy flow with cage-type rotor (11).
6. high-efficient powder concentrator according to claim 1, it is characterised in that: it is described break up deflector (33) it is opposite enter the wind into
The inner wall of material shell (30) tilts down arrangement.
7. high-efficient powder concentrator according to claim 1, it is characterised in that: the inner cylinder (10), outer barrel (20)
Lower section is respectively disposed with the first reclaiming cone (16), the second reclaiming cone (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810990816.1A CN109092684A (en) | 2018-08-28 | 2018-08-28 | high-efficient powder concentrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810990816.1A CN109092684A (en) | 2018-08-28 | 2018-08-28 | high-efficient powder concentrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109092684A true CN109092684A (en) | 2018-12-28 |
Family
ID=64864105
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810990816.1A Pending CN109092684A (en) | 2018-08-28 | 2018-08-28 | high-efficient powder concentrator |
Country Status (1)
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109926162A (en) * | 2019-04-27 | 2019-06-25 | 南京凯盛国际工程有限公司 | A kind of side air inlet selects the New-type vertical mill of powder with built-in assembled highly-effective |
| CN109926163A (en) * | 2019-04-27 | 2019-06-25 | 南京凯盛国际工程有限公司 | A kind of lower air inlet selects the New-type vertical mill of powder with built-in assembled highly-effective |
| CN112827831A (en) * | 2021-01-05 | 2021-05-25 | 泰山中联水泥有限公司 | Be used for novel doublestage selection powder mechanism of cement manufacture |
| CN113708245A (en) * | 2021-08-25 | 2021-11-26 | 安徽富煌电力装备科技有限公司 | Distributed photovoltaic grid-connected cabinet with leakage protection function |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2176849Y (en) * | 1993-12-03 | 1994-09-14 | 国家建筑材料工业局合肥水泥研究设计院 | Air sorting machine for powder |
| CN2753472Y (en) * | 2004-11-22 | 2006-01-25 | 中天仕名科技集团有限公司 | Horizontal vortex powder separating machine with special structure |
| CN101716574A (en) * | 2009-12-25 | 2010-06-02 | 江苏科行环境工程技术有限公司 | High-efficiency material distribution powder selector |
| CN202052701U (en) * | 2011-01-18 | 2011-11-30 | 赵益民 | Powder concentrator capable of sorting out component materials having particles of rough, medium, and fine particle sizes |
| CN202174006U (en) * | 2011-06-22 | 2012-03-28 | 江苏吉能达建材设备有限公司 | Winnowing type powder removing machine for artificial sandstone |
| US20130056396A1 (en) * | 2010-05-14 | 2013-03-07 | Babcock-Hitachi Kabushiki Kaisha | Rotating Classifier |
| CN204234348U (en) * | 2014-11-08 | 2015-04-01 | 高县天顺建材有限责任公司 | The low energy consumption powder concentrator of rod broken up by band |
| CN105435938A (en) * | 2015-12-31 | 2016-03-30 | 溧阳中材重型机器有限公司 | Cement combined grinding system |
| CN209093894U (en) * | 2018-08-28 | 2019-07-12 | 中建材（合肥）粉体科技装备有限公司 | High-efficient powder concentrator |
-
2018
- 2018-08-28 CN CN201810990816.1A patent/CN109092684A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2176849Y (en) * | 1993-12-03 | 1994-09-14 | 国家建筑材料工业局合肥水泥研究设计院 | Air sorting machine for powder |
| CN2753472Y (en) * | 2004-11-22 | 2006-01-25 | 中天仕名科技集团有限公司 | Horizontal vortex powder separating machine with special structure |
| CN101716574A (en) * | 2009-12-25 | 2010-06-02 | 江苏科行环境工程技术有限公司 | High-efficiency material distribution powder selector |
| US20130056396A1 (en) * | 2010-05-14 | 2013-03-07 | Babcock-Hitachi Kabushiki Kaisha | Rotating Classifier |
| CN202052701U (en) * | 2011-01-18 | 2011-11-30 | 赵益民 | Powder concentrator capable of sorting out component materials having particles of rough, medium, and fine particle sizes |
| CN202174006U (en) * | 2011-06-22 | 2012-03-28 | 江苏吉能达建材设备有限公司 | Winnowing type powder removing machine for artificial sandstone |
| CN204234348U (en) * | 2014-11-08 | 2015-04-01 | 高县天顺建材有限责任公司 | The low energy consumption powder concentrator of rod broken up by band |
| CN105435938A (en) * | 2015-12-31 | 2016-03-30 | 溧阳中材重型机器有限公司 | Cement combined grinding system |
| CN209093894U (en) * | 2018-08-28 | 2019-07-12 | 中建材（合肥）粉体科技装备有限公司 | High-efficient powder concentrator |
Non-Patent Citations (1)
| Title |
|---|
| 孙传尧: "《粮食加工与综合利用工艺学》", vol. 1, 河南科学技术出版社, pages: 385 - 386 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109926162A (en) * | 2019-04-27 | 2019-06-25 | 南京凯盛国际工程有限公司 | A kind of side air inlet selects the New-type vertical mill of powder with built-in assembled highly-effective |
| CN109926163A (en) * | 2019-04-27 | 2019-06-25 | 南京凯盛国际工程有限公司 | A kind of lower air inlet selects the New-type vertical mill of powder with built-in assembled highly-effective |
| CN112827831A (en) * | 2021-01-05 | 2021-05-25 | 泰山中联水泥有限公司 | Be used for novel doublestage selection powder mechanism of cement manufacture |
| CN112827831B (en) * | 2021-01-05 | 2021-10-26 | 泰山中联水泥有限公司 | Be used for cement manufacture doublestage selection powder mechanism |
| CN113708245A (en) * | 2021-08-25 | 2021-11-26 | 安徽富煌电力装备科技有限公司 | Distributed photovoltaic grid-connected cabinet with leakage protection function |
| CN113708245B (en) * | 2021-08-25 | 2023-10-13 | 安徽富煌电力装备科技有限公司 | Distributed photovoltaic grid-connected cabinet with leakage protection function |
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