CN100588462C - Internal screening roller type vertical mill - Google Patents
Internal screening roller type vertical mill Download PDFInfo
- Publication number
- CN100588462C CN100588462C CN200810123058A CN200810123058A CN100588462C CN 100588462 C CN100588462 C CN 100588462C CN 200810123058 A CN200810123058 A CN 200810123058A CN 200810123058 A CN200810123058 A CN 200810123058A CN 100588462 C CN100588462 C CN 100588462C
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- fine powder
- mill
- grinding
- type vertical
- interlayer
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- 238000012216 screening Methods 0.000 title claims abstract description 11
- 239000000843 powder Substances 0.000 claims abstract description 41
- 238000000227 grinding Methods 0.000 claims abstract description 28
- 239000011229 interlayer Substances 0.000 claims abstract description 13
- 239000010410 layer Substances 0.000 claims abstract description 3
- 235000012054 meals Nutrition 0.000 claims description 15
- 238000003892 spreading Methods 0.000 claims description 8
- 230000007480 spreading Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 abstract description 18
- 239000004568 cement Substances 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000011148 porous material Substances 0.000 abstract 1
- 239000002699 waste material Substances 0.000 abstract 1
- 230000009471 action Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 241001504664 Crossocheilus latius Species 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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- Crushing And Grinding (AREA)
Abstract
The invention relates to material grinding equipment used in the field of cement production, in particular to an internal screening roll-type vertical mill, comprising a millstone and a grinding roller. The external edges of the millstone are connected with a classification screen. The millstone and the classification screen are covered by two layers of cylinders: an internal cylinder inside and an external cylinder outside. A fine powder cavity is arranged between the classification screen and the internal cylinder. Screen pores of the classification screen are communicated with the fine powder cavity. The outside of the fine powder cavity is communicated with a plurality of fine powder channels distributed on the circumference of the internal cylinder. The fine powder channels pass through an interlayer between the internal cylinder and the external cylinder and extend out from the external cylinder and enter a fine powder outlet. The upper edge of the classification screen is provided with an upper plane. The upper plane extends into the upper end of the interlayer between the internal cylinder and the external cylinder. A crude powder slide carriage is arranged in the interlayer, a lower end of the crude powder slide carriage is led to a crude powder outlet. The material grinding equipment not only assures grinding quality but also avoids energy waste and equipment vibration caused by repeated powder grinding, simplifies the grinding technique and prolongs the service life of the wear parts.
Description
Technical field
The present invention relates to a kind of material grinding equipment that is used for industries such as manufacture of cement, metallurgy, electric power, specifically is a kind of internal screening roller type vertical mill.
Background technology
The grinding of material is the necessary operation of the raw material processing procedure of many industry production, for example, the cement grinding operation is the important step in the cement production process, and it not only is related to the quality of cement, simultaneously also to the output and the energy consumption important influence of cement.When making great efforts to improve cement grinding equipment yield and cement fineness, reduce the energy consumption of grinding system to greatest extent, have important practical significance for saving the energy and improving economic benefit of enterprises.
In the existing milling equipment, roller type vertical mill is a kind of more equipment that uses, its structure as shown in Figure 1, generally comprised a rotatable mill a, the grinding roller b that several cooperate with mill is set above mill, material is pulverized and is entered under the extruding of mill and grinding roller among the hopper c outside the mill, is pushed to discharging opening d by a material scraping plate that rotates simultaneously with mill again and discharges.This class formation exists following defective: 1, the material discharge method is forced to discharge by scraper plate, and energy consumption is big, the material scraping plate serious wear; 2, wear-out part such as mill liner plate is short service life; 3, in order to guarantee grinding effect, usually the material of discharging behind the grinding is partly circulated to enter once more and carry out grinding repeatedly in the mill, though this can improve powder quality, but the qualified fine powder of part also is brought in the mill during owing to the circulation grinding, repeat grinding, wasted power consumption, and because the existence of fine powder easily produces vibration.
Summary of the invention
Technical problem to be solved by this invention is, provide a kind of rational in infrastructure, energy consumption is low, can carry out the sorting of meal and fine powder, the internal screening roller type vertical mill of wear-out part long service life automatically.
Internal screening roller type vertical mill of the present invention include one by power drive rotation mill, the mill top is mounted with the grinding roller that several have the conical surface; The outer of described mill is connected with the classifying screen of an inverted cone surface shape, and mill and classifying screen are surrounded by two-layer cylindrical shell, i.e. the outer cylinder body in the Nei Ce inner barrel and the outside; Be provided with the fine powder chamber of the annular that can hold fine powder between classifying screen and the inner barrel, the sieve aperture of classifying screen communicates with the fine powder chamber, the fine powder chamber outside communicates with a plurality of fine powder passages on being arranged in the inner barrel circumference, the interlayer that the fine powder passage passes between inner barrel and the outer cylinder body stretches out outside the outer cylinder body, and leads to the fine powder outlet; The upper edge of classifying screen has one section and goes up the plane, and the plane extends to the interlayer upper end between inner barrel and the outer cylinder body this on, is provided with in this interlayer from extending to meal slide carriage down, and the lead meal of outer cylinder body bottom of the lower end of meal slide carriage exports.
The inner face of described classifying screen is provided with helical blade, makes the meal material can enter interlayer between the inside and outside cylindrical shell in the upper edge that moves up under the thrust of helical blade and the action of centrifugal force and cross classifying screen.
The mill upper surface of grinding roller periphery is provided with the striker plate of annular, just shifts to classifying screen after making powder behind the stone roller surpass the height of striker plate.
In above-mentioned fine powder chamber, be provided with the spreading disk of annular, spreading disk together rotates with mill.
Be coated with liner plate on the described mill, liner plate is provided with the installing hole that passes for screw, and the upper/lower terminal of this installing hole is provided with the stepped hole that can settle sunk screw, its upper and lower faces can be overturn exchange use.
The present invention has increased sorting structures such as classifying screen and inside and outside cylindrical shell on original roller type vertical mill basis, can realize automatic sorting thick, fine powder material, meal can be sent into circulation grinding in the mill once more by hoisting mechanism, both guaranteed the grinding quality, power wastage and the vibration equipment also having avoided fine powder to repeat grinding and caused, and or to simplify the flow process of whole grinding process; In addition, the liner plate on its mill can use another side work through the smooth upset again of simple process back behind a surface wear, thereby has prolonged its service life, has reduced cost.
Description of drawings
Fig. 1 is the roller type vertical mill structural representation of prior art;
Fig. 2 be the embodiment of the invention the overall structure schematic diagram;
Fig. 3 is the Facad structure schematic diagram of the inside and outside cylindrical shell of the embodiment of the invention;
Fig. 4 is the side structure schematic diagram of the inside and outside cylindrical shell of the embodiment of the invention;
Fig. 5 is the mill lining plate structure schematic diagram of the embodiment of the invention.
The specific embodiment
Reference numeral comprises among Fig. 2~Fig. 5: mill 1, grinding roller 2, liner plate 3, classifying screen 4, inner barrel 5, outer cylinder body 6, fine powder chamber 7, fine powder passage 8, interlayer 9, fine powder outlet 10, last plane 11, meal slide carriage 12, meal outlet 13, helical blade 14, striker plate 15, spreading disk 16, installing hole 17.
The course of work of embodiments of the invention is: material enters mill 1 by the spout of top, under the rolling of mill 1 and grinding roller 2, pulverized, the material of pulverizing is outwards motion under action of centrifugal force, and be subjected to stopping of peripheral striker plate 15, the material that surpasses the striker plate height climbs over striker plate and enters screen area, under the effect of classifying screen 4, thin material passes sieve aperture and enters the fine powder chamber 7 of inner barrel 5 inboards and drop on the spreading disk on 16, rotation along with spreading disk, under action of centrifugal force, fine powder material is thrown in the fine powder passage 8 on the inner barrel circumference, finally sends outside the outer cylinder body 6 and by conveying equipment and is finally discharged by fine powder outlet 10; And the meal material in screen area, then pass through the turning effort of classifying screen 4, driving spiral by the helical blade on the classifying screen 14 moves upward, because action of centrifugal force, be distributed on the last plane 11 of classifying screen upper edge, fall into meal that interlayer 9 between the inside and outside cylindrical shell and the meal slide carriage 12 in interlayer be slipped to the bottom subsequently and export 13 places and discharge outside the mill, these meal material can utilize the outer elevator of mill or other conveying devices to be transported to by spout again to continue on the mill to mill.
As shown in Figure 5, liner plate 3 is fastened on the mill by installing hole 17, and the upper/lower terminal of installing hole is provided with the stepped hole that can settle sunk screw, its upper and lower faces can be overturn exchange use.Like this, behind liner plate one surface wear, can use another side work through the smooth upset again of simple process back.
Claims (5)
1, a kind of internal screening roller type vertical mill includes mill (1), and the mill top is mounted with several grinding rollers with conical surface (2); It is characterized in that: the outer of described mill is connected with the classifying screen (4) of an inverted cone surface shape, and mill and classifying screen are surrounded by two-layer cylindrical shell, i.e. the outer cylinder body (6) in the Nei Ce inner barrel (5) and the outside; Be provided with the fine powder chamber (7) of the annular that can hold fine powder between classifying screen (4) and the inner barrel (5), the sieve aperture of classifying screen communicates with the fine powder chamber, the fine powder chamber outside communicates with a plurality of fine powder passages (8) on being arranged in the inner barrel circumference, the interlayer (9) that fine powder passage (8) passes between inner barrel and the outer cylinder body stretches out outside the outer cylinder body, and leads to fine powder outlet (10); The upper edge of classifying screen has one section and goes up plane (11), last plane extends to interlayer (9) upper end, in interlayer (9), be provided with the meal slide carriage (12) under extend to, the meal outlet (13) of the guiding outer cylinder body bottom, lower end of meal slide carriage, the inner face of described classifying screen (4) is provided with helical blade (14).
2, internal screening roller type vertical mill according to claim 1 is characterized in that: the mill upper surface of grinding roller periphery is provided with the striker plate (15) of annular.
3, internal screening roller type vertical mill according to claim 2 is characterized in that: in fine powder chamber (7), be provided with the spreading disk (16) of annular, spreading disk together rotates with mill (1).
4, internal screening roller type vertical mill according to claim 1 is characterized in that: in fine powder chamber (7), what be provided with annular removes charging tray (16), and spreading disk together rotates with mill (1).
5, internal screening roller type vertical mill according to claim 1, it is characterized in that: be coated with liner plate (3) on the mill (1), liner plate is provided with the installing hole (17) that passes for screw, and the upper/lower terminal of this installing hole is provided with the stepped hole that can settle sunk screw.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200810123058A CN100588462C (en) | 2008-06-20 | 2008-06-20 | Internal screening roller type vertical mill |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200810123058A CN100588462C (en) | 2008-06-20 | 2008-06-20 | Internal screening roller type vertical mill |
Publications (2)
Publication Number | Publication Date |
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CN101318154A CN101318154A (en) | 2008-12-10 |
CN100588462C true CN100588462C (en) | 2010-02-10 |
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CN200810123058A Active CN100588462C (en) | 2008-06-20 | 2008-06-20 | Internal screening roller type vertical mill |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105214780A (en) * | 2015-09-18 | 2016-01-06 | 江苏融达新材料股份有限公司 | A kind of production method of vertical mill grinding lithium ground-slag |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
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CN102784707A (en) * | 2011-05-17 | 2012-11-21 | 王燕 | Double-layer internal screening device |
EP2777814B1 (en) | 2011-11-11 | 2019-05-01 | Kawasaki Jukogyo Kabushiki Kaisha | Vertical roller mill |
CN104056691B (en) * | 2013-03-21 | 2018-01-12 | 川崎重工业株式会社 | Vertical roll grinder |
CN106466653B (en) * | 2015-08-21 | 2018-09-25 | 南京凯盛国际工程有限公司 | Novel vertical mill device |
CN105597865B (en) * | 2016-01-26 | 2018-02-09 | 安徽大地节能科技有限公司 | A kind of peanut shell crushing device |
CN105854992A (en) * | 2016-04-05 | 2016-08-17 | 申士富 | Wet method roller type disintegrating mill and grading closed-circuit process thereof |
CN108855420B (en) * | 2018-06-08 | 2019-05-17 | 包头市中鑫安泰磁业有限公司 | A kind of milling process of airflow mill and Nd-Fe-B permanent magnet |
CN111957396A (en) * | 2018-08-08 | 2020-11-20 | 李娜 | Vertical mill equipment that building engineering used |
CN110090696A (en) * | 2019-03-19 | 2019-08-06 | 江苏振强机械科技股份有限公司 | A kind of pressure mill formula sand making machine |
CN111229390B (en) * | 2020-03-05 | 2021-10-22 | 兰溪诸葛南方水泥有限公司 | Vertical mill type powder concentrator capable of returning materials |
CN113198592A (en) * | 2021-05-14 | 2021-08-03 | 南昌矿山机械有限公司 | Vertical sand grinding machine and sand making method |
CN113976280B (en) * | 2021-10-28 | 2023-01-20 | 毅康科技有限公司 | Biomass recycling device with crushing structure |
-
2008
- 2008-06-20 CN CN200810123058A patent/CN100588462C/en active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105214780A (en) * | 2015-09-18 | 2016-01-06 | 江苏融达新材料股份有限公司 | A kind of production method of vertical mill grinding lithium ground-slag |
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CN101318154A (en) | 2008-12-10 |
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Effective date of registration: 20191225 Address after: 210000 No.7 Yingcui Road, Jiangning Economic and Technological Development Zone, Jiangning District, Nanjing City, Jiangsu Province Patentee after: Nanjing Juli Powder Engineering Technology Research Institute Co., Ltd Address before: Five building, No. 63, Riverside District, Dongmen Village, Jiangsu City, Jurong province 212400 Patentee before: Zhang Guicai |
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