CN106890705B - A kind of medium-speed pulverizer - Google Patents
A kind of medium-speed pulverizer Download PDFInfo
- Publication number
- CN106890705B CN106890705B CN201710253788.0A CN201710253788A CN106890705B CN 106890705 B CN106890705 B CN 106890705B CN 201710253788 A CN201710253788 A CN 201710253788A CN 106890705 B CN106890705 B CN 106890705B
- Authority
- CN
- China
- Prior art keywords
- mill
- roller
- roll sleeve
- grinding roller
- milling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000000227 grinding Methods 0.000 claims abstract description 49
- 239000003245 coal Substances 0.000 claims abstract description 27
- 238000003801 milling Methods 0.000 claims abstract description 18
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 10
- 230000001050 lubricating effect Effects 0.000 claims abstract description 9
- 238000005299 abrasion Methods 0.000 abstract description 4
- 230000008092 positive effect Effects 0.000 abstract 1
- 239000002893 slag Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 239000002817 coal dust Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
- B02C15/004—Shape or construction of rollers or balls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
- B02C15/007—Mills with rollers pressed against a rotary horizontal disc
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
Abstract
A kind of medium-speed pulverizer, including motor, speed reducer, lower frame, middle frame body, separator, mill assembly, grinding roller assembly, pressurizing device, drag link mechanism, hydraulic system, slag-draining device, lubricating system, basis, improvements introduced is: the shape of component grinding roller roller of milling set is centripetal circular arc bowl-type (molded line of milling still is arc-shaped), the radius of curvature of mill roll sleeve central diameter takes 0.5 times of extremely infinitely great multiple of grinding machine pitch diameter, the positive effect of the present invention is: the shape by changing its original roller set, roller covers section and is changed to centripetal circular arc kidney-shaped by wheel the form of the foetus, increase the region of milling of roller set and millstone sheet, the crushing efficiency of raw coal is improved in unit time, to improve the power output of coal pulverizer；The grinding roller of arc-shaped rotates on millstone sheet along with the mill rail central diameter of mill, reduces the linear velocity difference of mill roll sleeve and millstone sheet, reduces the abrasion of roller set outside left.
Description
Technical field
The invention belongs to powder disintegrating apparatus technical fields processed, and in particular to coal-fired station's coal-grinding equipment.
Background technique
The more medium-speed pulverizer used of the coal-burning utilities such as thermal power plant, including main motor, speed reducer, lower frame, middle frame
Body, separator, mill assembly, grinding roller assembly, pressurizing device, drag link mechanism, hydraulic system, slag-draining device, lubricating system, basis
Equal components.When equipment is run, main motor drives the mill being fixed on above speed reducer to rotate by shaft coupling, and millstone sheet is fixed
On mill, under the action of frictional force, mill drives grinding roller rotation.The raw coal on millstone sheet is fallen in by separator coal spout
It is milled by grinding roller, the qualified coal dust for being ground to certain fineness is sent outside mill by a hot wind by separator flour extraction pipe.
It mills component grinding roller and mill plays the role of milling and being crushed to raw coal, fineness of pulverized coal is made to reach qualified requirement.
In wheel the form of the foetus, three grinding rollers are evenly arranged in mill in roller set section in the grinding roller assembly of the wheeled coal pulverizer of previous middling speed
On disk watt, grinding roller is fallen in the mill rail central diameter of millstone sheet, is formed raw coal between grinding roller and millstone sheet and is milled region.Coal pulverizer work
When making, the raw coal fallen from coal spout is thrown on millstone sheet under the rotation of mill, and grinding roller is fallen on raw coal, in hydraulic system
It mills under the grinding forces effect of application to raw coal.By milling, modular construction is influenced, and the raw coal amount in region of milling is opposite
It is less, affect the power output of coal pulverizer；Simultaneously as roller set is external larger with the linear differential of millstone sheet, grinding roller roller is increased
Abrasion outside set, reduces the service life for component of milling.
Summary of the invention
The object of the present invention is to provide a kind of medium-speed pulverizers to overcome existing mill by changing the shape of mill roll sleeve
Coal machine above shortcomings.
The present invention includes: motor, speed reducer, lower frame, middle frame body, separator, mill assembly, grinding roller assembly, pressurization
Device, drag link mechanism, hydraulic system, slag-draining device, lubricating system, basis, the improvement done is: the grinding roller roller in assembly of milling
The shape of set is tire-like, centripetal circular arc bowl-type (molded line of milling still is arc-shaped), and mill roll sleeve central diameter is (by mill roll sleeve
Property layer and grind roll sleeve molded line midpoint radius) radius of curvature value range be coal pulverizer pitch diameter (coal pulverizer grinding section
The diameter of circular arc where part grinding roller and millstone sheet contact point) 0.5 times to infinitely great multiple, mill molded line and the mill of roller set
The molded line of milling of watt (for arc bowl formula structure) matches, and rolls grinding roller on millstone sheet along the mill rail central diameter of mill.
In the present invention, the mill preferred value range of roll sleeve central diameter radius of curvature be equal to the 2000 of coal pulverizer pitch diameter to
10000 times.
In the present invention, mill roll sleeve central diameter radius of curvature optimum valuing range is equal to the 3000 of coal pulverizer pitch diameter
Times.
The good effect of invention is: new grinding roller assembly use the roller set of centripetal circular arc kidney-shaped, and (roller set mills molded line to justify
Arc), molded line and the mill roll sleeve of millstone sheet match, and reduce the linear velocity difference of mill roll sleeve and millstone sheet, reduce
Roller covers the abrasion of outside left, improves the service life of easy-abrasion part.When coal pulverizer work, grinding roller and millstone sheet are fallen in
Between mill the area increase of effectively milling in region, make to fall in the raw coal quality phase in region of milling between mill roll sleeve and millstone sheet
To increase, the crushing efficiency of raw coal is improved in the unit time, to improve the power output of coal pulverizer, is more advantageous to the steady of equipment operation
It is fixed.
Detailed description of the invention
Fig. 1 is medium-speed pulverizer overall structure figure of the present invention.
Fig. 2 is that grinding roller covers shape and grinding roller assembly and mill assembly installation graph.
Fig. 3 is the radius of curvature and grinding machine pitch diameter relational graph for grinding roll sleeve central diameter.
Specific embodiment
Embodiment 1
Refering to fig. 1, Fig. 2, Fig. 3, medium-speed pulverizer of the present invention include main motor 1, speed reducer 2, lower frame 3, middle frame body
4, separator 5, mill assembly 6, grinding roller assembly 7, pressurizing device 8, drag link mechanism 9, basis 10, hydraulic system (not shown), row
Slag device (not shown), lubricating system (not shown).Improvements introduced is that the mill roll sleeve 7-1 shape of grinding roller assembly is tire
The radius of curvature of shape, centripetal circular arc bowl-type (molded line of milling still is arc-shaped), mill roll sleeve central diameter Rt takes grinding machine pitch diameter Dj
3000 times, the running track of grinding roller and the mill rail central diameter of mill are consistent.
Embodiment 2
Refering to fig. 1, Fig. 2, Fig. 3, medium-speed pulverizer of the present invention include main motor 1, speed reducer 2, lower frame 3, middle frame body
4, separator 5, mill assembly 6, grinding roller assembly 7, pressurizing device 8, drag link mechanism 9, basis 10, hydraulic system (not shown), row
Slag device (not shown), lubricating system (not shown).Improvements introduced is that the mill roll sleeve 7-1 shape of grinding roller assembly is tire
The radius of curvature of shape, centripetal circular arc bowl-type (molded line of milling still is arc-shaped), mill roll sleeve central diameter Rt takes grinding machine pitch diameter Dj
2000 times, the running track of grinding roller and the mill rail central diameter of mill are consistent.
Embodiment 3
Refering to fig. 1, Fig. 2, Fig. 3, medium-speed pulverizer of the present invention include main motor 1, speed reducer 2, lower frame 3, middle frame body
4, separator 5, mill assembly 6, grinding roller assembly 7, pressurizing device 8, drag link mechanism 9, basis 10, hydraulic system (not shown), row
Slag device (not shown), lubricating system (not shown).Improvements introduced is that the mill roll sleeve 7-1 shape of grinding roller assembly is tire
The radius of curvature of shape, centripetal circular arc bowl-type (molded line of milling still is arc-shaped), mill roll sleeve central diameter Rt takes grinding machine pitch diameter Dj
5000 times, the running track of grinding roller and the mill rail central diameter of mill are consistent.
Embodiment 4
Refering to fig. 1, Fig. 2, Fig. 3, medium-speed pulverizer of the present invention include main motor 1, speed reducer 2, lower frame 3, middle frame body
4, separator 5, mill assembly 6, grinding roller assembly 7, pressurizing device 8, drag link mechanism 9, basis 10, hydraulic system (not shown), row
Slag device (not shown), lubricating system (not shown).Improvements introduced is that the mill roll sleeve 7-1 shape of grinding roller assembly is tire
The radius of curvature of shape, centripetal circular arc bowl-type (molded line of milling still is arc-shaped), mill roll sleeve central diameter Rt takes grinding machine pitch diameter Dj
7000 times, the running track of grinding roller and the mill rail central diameter of mill are consistent.
Embodiment 5
Refering to fig. 1, Fig. 2, Fig. 3, medium-speed pulverizer of the present invention include main motor 1, speed reducer 2, lower frame 3, middle frame body
4, separator 5, mill assembly 6, grinding roller assembly 7, pressurizing device 8, drag link mechanism 9, basis 10, hydraulic system (not shown), row
Slag device (not shown), lubricating system (not shown).Improvements introduced is that the mill roll sleeve 7-1 shape of grinding roller assembly is tire
The radius of curvature of shape, centripetal circular arc bowl-type (molded line of milling still is arc-shaped), mill roll sleeve central diameter Rt takes grinding machine pitch diameter Dj
10000 times, the running track of grinding roller and the mill rail central diameter of mill are consistent.
Claims (3)
1. a kind of medium-speed pulverizer, including the assembly of motor, speed reducer, lower frame, middle frame body, separator, grinding roller, mill dress
Match, pressurizing device, drag link mechanism, hydraulic system, slag-draining device, lubricating system, basis, it is characterized in that: the mill in grinding roller assembly
The shape of roll sleeve is tire-like, centripetal circular arc bowl-type, and mill roll sleeve central diameter radius of curvature value range is equal to coal pulverizer section
To infinitely great multiple, the molded line of milling of mill molded line and the millstone sheet of roller set matches 0.5 times of circular diameter.
2. a kind of medium-speed pulverizer according to claim 1, it is characterized in that: mill roll sleeve central diameter radius of curvature value range
It is equal to 2000 to 10000 times of coal pulverizer pitch diameter.
3. a kind of medium-speed pulverizer according to claim 1, it is characterized in that: mill roll sleeve central diameter radius of curvature value range
It is equal to 3000 times of coal pulverizer pitch diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710253788.0A CN106890705B (en) | 2017-04-18 | 2017-04-18 | A kind of medium-speed pulverizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710253788.0A CN106890705B (en) | 2017-04-18 | 2017-04-18 | A kind of medium-speed pulverizer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106890705A CN106890705A (en) | 2017-06-27 |
| CN106890705B true CN106890705B (en) | 2019-09-17 |
Family
ID=59196447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710253788.0A Active CN106890705B (en) | 2017-04-18 | 2017-04-18 | A kind of medium-speed pulverizer |
Country Status (1)
| Country | Link |
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| CN (1) | CN106890705B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109806943A (en) * | 2017-11-22 | 2019-05-28 | 中国电建集团长春发电设备有限公司 | A kind of high loading force medium-speed pulverizer |
| CN109012886B (en) * | 2018-07-02 | 2020-12-15 | 天津水泥工业设计研究院有限公司 | Vertical mill grinding roller and grinding disc speed difference on-line monitoring system |
| CN112191331A (en) * | 2020-10-19 | 2021-01-08 | 上海谦淼工业科技有限公司 | Vertical mill with increase-volume and increase-efficiency structure |
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| CN206853810U (en) * | 2017-04-18 | 2018-01-09 | 长春发电设备总厂 | A kind of medium-speed pulverizer |
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| Publication number | Publication date |
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| CN106890705A (en) | 2017-06-27 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: No. 3388 century street, Changchun Economic Development Zone, Jilin Province, Jilin Applicant after: China Electric Construction Group Changchun power generation equipment Co., Ltd. Address before: Two district Huairenlu 130000 Jilin province Changchun No. 621 Applicant before: Changchun Power Generation Equipment Plant |
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| CB02 | Change of applicant information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Yuan Hongfei Inventor after: Sun Yingchen Inventor after: Qi Shiyan Inventor after: Wang Lifang Inventor after: Sun Quan Inventor after: Xu Chunmei Inventor after: Wang Binxiang Inventor after: An Peng Inventor after: Yang Zhe Inventor after: Zhang Xichun Inventor after: Zhang Mingchang Inventor after: Dai Yongjun Inventor after: Chi Zhengang Inventor after: Meng Fanrong Inventor after: Rong Jingtao Inventor after: Yang Liu Inventor after: Zhao Jiahui Inventor before: Dai Yongjun Inventor before: Sun Quan Inventor before: Wang Binxiang Inventor before: Yuan Hongfei Inventor before: Zhang Xichun Inventor before: Meng Fanrong Inventor before: Zhao Jiahui Inventor before: Sun Yingchen Inventor before: Qi Shiyan Inventor before: Xu Chunmei Inventor before: Wang Lifang |
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| CB03 | Change of inventor or designer information | ||
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| GR01 | Patent grant |