CN107617474A - A kind of grinding vertical grinding roller structure - Google Patents
A kind of grinding vertical grinding roller structure Download PDFInfo
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- CN107617474A CN107617474A CN201711067695.5A CN201711067695A CN107617474A CN 107617474 A CN107617474 A CN 107617474A CN 201711067695 A CN201711067695 A CN 201711067695A CN 107617474 A CN107617474 A CN 107617474A
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- grinding
- roller
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- mill
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- 238000000227 grinding Methods 0.000 title claims abstract description 129
- 239000000843 powder Substances 0.000 claims abstract description 25
- 230000006835 compression Effects 0.000 claims abstract description 13
- 238000007906 compression Methods 0.000 claims abstract description 13
- 125000006850 spacer group Chemical group 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 abstract description 30
- 239000004568 cement Substances 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 4
- 238000001125 extrusion Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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- Crushing And Grinding (AREA)
Abstract
The invention discloses a kind of grinding vertical grinding roller structure, spacer ring is provided with the middle part of the grinding area of the mill, the grinding of the mill is distinguished into the compression grinding area on the inside of mill and the friction grinding area on the outside of mill by the spacer ring, all compressed powder grinding rollers are arranged in the compression grinding area, and all Frication powder grinding rollers are arranged in the friction grinding area;The compression grinding area has inner roller groove, and the friction grinding area has outer side roller groove, and the groove width of the inner roller groove is more than the groove width of the outer side roller groove.Grinding of the present invention is with vertical grinding roller structure using interior outside secondary grinding roller extruding grinding process, and according to the characteristics of secondary extrusion material, design is optimized to the roller groove and the shape in rod face to match, the quality requirements of cement can be improved and cement grinding power consumption is greatly lowered.
Description
Technical field
The present invention relates in grinding technology field, more particularly to a kind of grinding vertical grinding roller structure.
Background technology
Vertical roller grinder abbreviation Vertical Mill, its grinding principle are bed of material grindings, i.e., by between particle and particle mutually extruding come
The grinding of material is realized, grinding process controllability is good, and mill efficiency is high.
The grinding structure that vertical roller grinder uses at present for:New feeding and powder concentrator feed back are mixed by feed bin under gravity
Feed in the middle part of mill, mill rotational band animal material is rotated, and material is transported from mill middle part to mill edge under the influence of centrifugal force
It is dynamic, when material movement to grinding roller lower section, under the collective effect of collet and grinding roller pressure, the grinding roller pressing materials (bed of material
), for material by grinding, the material after grinding crosses collet under the influence of centrifugal force, leaves mill, falls under gravity into
Vane, is then brought into the powder concentrator on grinding machine top by high velocity air upward in vane, and qualified finished product is walked by powder concentrator choosing, do not conformed to
Feedback outlet of the bulky grain of lattice through powder concentrator enters feed bin, returned after being mixed with new feeding mill continue grinding, until grinding into
The finished product of release mesh requirement.
Existing equal one kind of vertical grinding roller is cylinder, and one kind is cone.Both grinding rollers are past when coordinating with horizontal grinding disc
Toward higher collet is needed, to extend grinding time of the material on mill, so as to have the function that Stabilizing Materials bed.
Due to the presence of very high collet, cause grinding roller eroded area to compare concentration, have impact on the grinding roller life-span.
Vertical Mill is in grinding process, and material is under the influence of centrifugal force from mill center to mill border movement, material chi
On very little from large to small, the thickness of the bed of material is by thick thinning, by loosely becoming closely knit.And the chamber that above two conventional roll set is formed with mill
Body is essentially rectangular, thus the thickness of feed layer formed is basically identical, and this results in the thickness of bed of material ravelled spot and closely knit place one
Cause.Because the size of ravelled spot material is bigger than normal, thus grinding machine vibration can be influenceed, on the other hand, due to being cut between grinding roller and mill
Face is the bed of material space of rectangle, and the region that grinding roller is squeezed on material bed is wider, and the pressure at the closely knit place of material bed is shared by ravelled spot
, thus the actual pressure for acting on the closely knit place of material bed is smaller, is unfavorable for producing fine powder, produces high thin material finished product and compares
It is difficult.
The content of the invention
For above-mentioned technical problem, the present invention proposes a kind of grinding vertical grinding roller structure, basic in existing vertical roller grinder
On the basis of structure, grinding process is extruded using interior outside secondary grinding roller, and according to the characteristics of secondary extrusion material, to matching
Roller groove and the shape in rod face optimize design, the quality requirements of cement can be improved and cement grinding power consumption is greatly lowered.
In order to realize above-mentioned technical purpose, the present invention adopts the following technical scheme that:
A kind of grinding vertical grinding roller structure, is provided with spacer ring in the middle part of the grinding area of the mill, and the spacer ring is by the mill
Grinding be distinguished on the inside of mill compression grinding area and the friction grinding area on the outside of mill, all compressed powder grinding rollers it is equal
It is arranged in the compression grinding area, all Frication powder grinding rollers are arranged in the friction grinding area;The compression grinding area
With inner roller groove, the friction grinding area has outer side roller groove, and the groove width of the inner roller groove is more than the outer side roller groove
Groove width.
The inner roller groove and outer side roller groove are circular arc roller groove, wherein, the groove width R1 of inner roller groove numerical value
It is 1.4-1.6 times of the groove width R2 of outer side roller groove numerical value.
The grinding roller diameter of the compressed powder grinding roller is more than the grinding roller diameter of Frication powder grinding roller.
The roll surface of the compressed powder grinding roller and the roll surface of Frication powder grinding roller are spherical roll surface.
Beneficial effect:
For the present invention using asymmetric spherical grinding roller, the roller that the roller groove for being located at outside is more than positioned at the wide R1 of roller of the roller groove of inner side is wide
R2, the roller dish gap of inner side is larger, advantageously forms material wedge, smaller for compression grinding area, speed difference herein;Between the roller groove in outside
Gap is smaller, and is permanent gap, is designed to larger speed difference, forms friction grinding area, is advantageous to fine grain generation.
Due to the material of outside grinding roller grinding have been subjected to inner side grinding roller first crushing, into outside material particular diameter compared with
Small, its grinding roller diameter is small compared with inner side grinding roller diameter, because the linear velocity of outside slot grinding is more than inner side slot grinding, the outer side grinding of minor diameter
Roller is more convenient for improving roll-in number of the grinding roller to material, reinforced cementitious granule-morphology, can more meet finished cement to granule-morphology
And the technical requirements of grain composition, therefore cement finish grinding vertical roller grinder can improve the quality requirements of cement and be greatly lowered
Cement grinding power consumption.
Brief description of the drawings
Fig. 1 is the structural representation of cement finish grinding vertical grinding roller of the present invention;
Fig. 2 is the floor map of mill;
Wherein, 1 is charging aperture;2 be compressed powder grinding roller;3 be mill;4 be material bearing disc;5 be discharging opening;6 be Frication powder grinding roller;
7 be blocking material ring;8 be lining board for grinding discs;9 be material scraping plate;10 be reductor.
Embodiment
For innovation and creation content, feature and effect of the invention can be further appreciated that, following examples are hereby enumerated, in detail
Carefully it is described as follows:
As shown in Fig. 1, a kind of grinding vertical grinding roller structure, the grinding area middle part of the mill is provided with spacer ring, the spacer ring
The grinding of the mill is distinguished into the compression grinding area on the inside of mill and the friction grinding area on the outside of mill, owned
Compressed powder grinding roller is arranged in the compression grinding area, and all Frication powder grinding rollers are arranged in the friction grinding area;Institute
Stating compression grinding area has inner roller groove, and the friction grinding area has outer side roller groove, and the groove width of the inner roller groove is more than institute
State the groove width of outer side roller groove.
Further preferred, the inner roller groove and outer side roller as grinding of the present invention with vertical grinding roller structure technology scheme
Groove is circular arc roller groove, wherein, the groove width R1 of inner roller groove numerical value is the groove width R2 of outer side roller groove numerical value
1.4-1.6。
Further preferred, the grinding roller of the compressed powder grinding roller as grinding of the present invention with vertical grinding roller structure technology scheme
Diameter is more than the grinding roller diameter of Frication powder grinding roller.
Further preferred, the roll surface of the compressed powder grinding roller as grinding of the present invention with vertical grinding roller structure technology scheme
Roll surface with Frication powder grinding roller is spherical roll surface.
Although the preferred embodiment of the invention is described above, the invention is not limited to
The embodiment stated, above-mentioned embodiment is only schematical, be not it is restricted, this area it is common
Technical staff is not departing from the invention objective and scope of the claimed protection situation under the enlightenment of the invention
Under, many forms can also be made, these are belonged within the protection domain of the invention.
Claims (1)
1. a kind of grinding vertical grinding roller structure, it is characterised in that be provided with spacer ring, the spacer ring in the middle part of the grinding area of the mill
The grinding of the mill is distinguished into the compression grinding area on the inside of mill and the friction grinding area on the outside of mill, owned
Compressed powder grinding roller is arranged in the compression grinding area, and all Frication powder grinding rollers are arranged in the friction grinding area;Institute
Stating compression grinding area has inner roller groove, and the friction grinding area has outer side roller groove, and the groove width of the inner roller groove is more than institute
State the groove width of outer side roller groove;
The inner roller groove and outer side roller groove are circular arc roller groove, wherein, the groove width R1 of inner roller groove numerical value is outer
1.4-1.6 times of the groove width R2 of side roller groove numerical value;
The grinding roller diameter of the compressed powder grinding roller is more than the grinding roller diameter of Frication powder grinding roller.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201711067695.5A CN107617474A (en) | 2017-11-03 | 2017-11-03 | A kind of grinding vertical grinding roller structure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201711067695.5A CN107617474A (en) | 2017-11-03 | 2017-11-03 | A kind of grinding vertical grinding roller structure |
Publications (1)
Publication Number | Publication Date |
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CN107617474A true CN107617474A (en) | 2018-01-23 |
Family
ID=61093613
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CN201711067695.5A Pending CN107617474A (en) | 2017-11-03 | 2017-11-03 | A kind of grinding vertical grinding roller structure |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111530560A (en) * | 2020-05-09 | 2020-08-14 | 南通利元亨机械有限公司 | Eight-roller Raymond mill |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0858839A1 (en) * | 1997-02-18 | 1998-08-19 | Kawasaki Jukogyo Kabushiki Kaisha | Cement clinker grinding method using vertical roller mill and apparatus thereof |
CN204865997U (en) * | 2015-06-10 | 2015-12-16 | 天津水泥工业设计研究院有限公司 | Hierarchical grinding structure of parallelly connected grinding unit that vertical roller ground |
CN106914312A (en) * | 2017-05-03 | 2017-07-04 | 南京凯盛国际工程有限公司 | A kind of whole grinding vertical |
CN107626394A (en) * | 2017-11-03 | 2018-01-26 | 江苏吉能达环境能源科技有限公司 | A kind of cement finish grinding vertical grinding roller structure |
CN207680706U (en) * | 2017-11-03 | 2018-08-03 | 江苏吉能达环境能源科技有限公司 | A kind of cement finish grinding vertical grinding roller structure |
CN207722883U (en) * | 2017-11-03 | 2018-08-14 | 江苏吉能达环境能源科技有限公司 | A kind of grinding vertical grinding roller structure |
-
2017
- 2017-11-03 CN CN201711067695.5A patent/CN107617474A/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0858839A1 (en) * | 1997-02-18 | 1998-08-19 | Kawasaki Jukogyo Kabushiki Kaisha | Cement clinker grinding method using vertical roller mill and apparatus thereof |
CN204865997U (en) * | 2015-06-10 | 2015-12-16 | 天津水泥工业设计研究院有限公司 | Hierarchical grinding structure of parallelly connected grinding unit that vertical roller ground |
CN106914312A (en) * | 2017-05-03 | 2017-07-04 | 南京凯盛国际工程有限公司 | A kind of whole grinding vertical |
CN107626394A (en) * | 2017-11-03 | 2018-01-26 | 江苏吉能达环境能源科技有限公司 | A kind of cement finish grinding vertical grinding roller structure |
CN207680706U (en) * | 2017-11-03 | 2018-08-03 | 江苏吉能达环境能源科技有限公司 | A kind of cement finish grinding vertical grinding roller structure |
CN207722883U (en) * | 2017-11-03 | 2018-08-14 | 江苏吉能达环境能源科技有限公司 | A kind of grinding vertical grinding roller structure |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111530560A (en) * | 2020-05-09 | 2020-08-14 | 南通利元亨机械有限公司 | Eight-roller Raymond mill |
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