CN107824280B - Detachable ceramic composite metal matrix medium speed pulverizer grinding roller - Google Patents
Detachable ceramic composite metal matrix medium speed pulverizer grinding roller Download PDFInfo
- Publication number
- CN107824280B CN107824280B CN201711283232.2A CN201711283232A CN107824280B CN 107824280 B CN107824280 B CN 107824280B CN 201711283232 A CN201711283232 A CN 201711283232A CN 107824280 B CN107824280 B CN 107824280B
- Authority
- CN
- China
- Prior art keywords
- grinding roller
- clamping groove
- coal mill
- roller body
- composite
- 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.)
- Active
Links
Images
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
- B02C15/005—Rollers or balls of composite construction
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention discloses a detachable ceramic composite metal matrix medium speed coal mill grinding roller which comprises a grinding roller body and a roller sleeve, wherein the roller sleeve is composed of a plurality of composite blocks detachably connected with the grinding roller body, a clamping groove structure for clamping the roller sleeve is arranged on the side surface of the grinding roller body, and the composite blocks are detachably connected with the grinding roller body through the clamping groove structure. The medium-speed coal mill disclosed by the invention is beneficial to later maintenance only by replacing the roller sleeve, the maintenance intensity and the maintenance time are reduced, the maintenance cost is greatly reduced, and the problems of difficulty in replacing the grinding roller, high labor intensity, high maintenance cost and the like of the conventional coal mill are solved.
Description
Technical Field
The invention relates to a grinding roller of a coal mill, in particular to a detachable ceramic composite metal matrix medium speed coal mill grinding roller.
Background
The medium-speed coal mill is a coal mill with the working speed of 50-300 r/min, the motor drives the grinding disc to rotate through the speed reducer, materials fall in the center of the grinding disc from the feeding hole through the air locking feeder, and meanwhile hot air enters the mill from the air inlet. Along with the rotation of the millstone, the materials move towards the edge of the millstone under the action of centrifugal force, and are crushed by the grinding roller when passing through an annular groove on the millstone, the crushed materials are brought up by the high-speed airflow of the air ring at the edge of the millstone, large particles directly fall on the millstone for re-crushing, the materials in the airflow fall on the millstone for re-grinding under the action of the rotary rotor, coarse powder falls on the millstone from the conical hopper for re-grinding, qualified fine powder is discharged out of the mill along with the airflow, and the qualified fine powder is collected by the dust collection device, so that the.
It is not difficult to find from the working principle of the medium speed coal mill that the key parts for crushing the material (coal powder) are the grinding disc and the grinding roller, and the two parts require enough high wear resistance to ensure the normal use of the coal mill, the working process of the surface of the grinding roller of the coal mill is the process of continuous impact and grinding, and the surface of the grinding roller is very easy to be worn.
Currently, medium speed coal mill grinding rolls are generally integrally cast and formed from high hardness and high wear resistance alloys (e.g., high chromium cast iron). Such grinding rollers present the following problems in use: (1) difficulty in maintenance; when a grinding roller of a coal mill fails due to abrasion, the grinding roller needs to be replaced integrally, taking an HP-1003 type medium-speed coal mill as an example, the diameter of the grinding roller reaches 1451mm, the weight of the grinding roller is 1.71 tons, the replacement difficulty is high, and the labor intensity of workers is high; (2) because the grinding roller is difficult to replace and maintain integrally, the time required by each maintenance is long (the coal mill needs to be stopped and cannot be produced when the grinding roller is maintained and replaced), and the production is influenced; (3) the whole grinding roller is replaced due to the wear failure of the surface of the grinding roller, and the equipment maintenance cost is high.
The conventional design means for solving the technical problems is to prepare the grinding roller sleeve of the medium-speed coal mill by adopting a more wear-resistant material, but the wear resistance of the grinding roller is only improved, the maintenance period of the coal mill is prolonged, and the problems of high integral replacement cost, high maintenance labor intensity, long maintenance time and the like of the grinding roller are not fundamentally solved.
Disclosure of Invention
In order to solve the technical problems, the invention provides the detachable ceramic composite metal matrix medium speed coal mill grinding roller, and the grinding roller of the coal mill only needs to be replaced after being worn, so that the maintenance cost is reduced, and the maintenance efficiency is improved.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a detachable ceramic composite metal matrix medium-speed coal mill grinding roller which comprises a grinding roller body and a roller sleeve, wherein the roller sleeve consists of a plurality of composite blocks detachably connected with the grinding roller body; the grinding roller is characterized in that a clamping groove structure used for clamping the roller sleeve is arranged on the side face of the grinding roller body, the clamping groove structure and the grinding roller body are of a combined structure, the clamping groove structure is fixed on the grinding roller body through a fastening bolt, the grinding roller body is conical, the clamping groove structure comprises a large-head clamping groove and a small-head clamping groove, the large-head clamping groove is formed in the lower portion of the side face of the grinding roller body, the small-head clamping groove is formed in the upper portion of the side face of the grinding roller body, and two ends of a composite block are clamped in the large-head clamping groove and the small-.
Optionally, the composite block is made of a ceramic reinforced metal matrix composite.
Optionally, the model of the coal mill is HP-1003.
Optionally, the number of the composite blocks is 24, and the thickness of the composite layer of the composite block is 41 mm.
Optionally, the size of the big-end slot is 15mm × 35mm, and the size of the small-end slot is 20mm × 35 mm.
Optionally, the material of the grinding roller body is Cr5。
Compared with the prior art, the invention has the following technical effects:
(1) the problem that the existing medium-speed coal mill is difficult to maintain can be effectively solved, the maintenance difficulty and labor intensity of equipment are reduced, and the maintenance efficiency is improved;
(2) the grinding roller of the conventional medium-speed coal mill can only be integrally replaced after being worn and failed, and the medium-speed coal mill only needs to replace the roller sleeve, so that later maintenance is facilitated, the maintenance intensity and the maintenance time are reduced, the maintenance cost is greatly reduced, and the problems of difficulty in replacing, high labor intensity, high maintenance cost and the like of the conventional grinding roller of the medium-speed coal mill are solved.
Taking an HP-1003 medium-speed coal mill as an example, the weight of the grinding roller of the integral medium-speed coal mill is 1.71 tons, the weight of the detachable grinding roller body is 1.16 tons, and the weight of the detachable roller sleeve is 528 kilograms. Originally, the roller sleeve can only be integrally replaced, and the product only needs to replace the roller sleeve part.
(3) Because the invention adopts the mode of combining the grinding roller by the body and the roller sleeve, the material of the body is made of original Cr20To Cr5The cost is greatly reduced.
Taking an HP-1003 medium-speed coal mill as an example: cr (chromium) component20The manufacturing cost of the grinding roller of the coal mill is about 7 ten thousand per ton, the manufacturing cost of the grinding roller of one coal mill is about 1.71 multiplied by 7 to 11.97 ten thousand yuan, and the manufacturing cost of the grinding roller prepared by the method is about: 1.16 × 1.8+0.528 × 7 ═ 5.784 ten thousand yuan (Cr)5About 1.8 ten thousand per ton). Namely, the cost of one grinding roller of the grinder is reduced by 11.97-5.784-6.186 ten thousand yuan.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a detachable ceramic composite metal-based medium speed coal mill grinding roller in the invention.
Description of reference numerals: 1. a grinding roller body; 2. compounding blocks; 3. a slot structure; 4. a big head clamping groove; 5. a small-head clamping groove; 6. and fastening the bolt.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the invention provides a detachable ceramic composite metal matrix medium speed coal mill grinding roller, which comprises a grinding roller body 1 and a roller sleeve, wherein the roller sleeve is composed of a plurality of composite blocks 2 detachably connected with the grinding roller body 1, the grinding roller body 1 is conical, the plurality of composite blocks 2 are laid along the periphery of the grinding roller body 1, and the plurality of composite blocks 2 after being laid form a complete medium speed coal mill roller sleeve.
In order to improve the wear resistance of the roller sleeve of the medium-speed coal mill, the composite block 2 is made of a ceramic reinforced metal matrix composite material. Taking an HP-1003 medium-speed coal mill as an example, the number of the composite blocks 2 is 24, and the thickness of the composite layer of the composite block 2 is 41 mm.
In order to realize that a plurality of compound pieces 2 can be dismantled with grinding roller body 1 and be connected, in this embodiment, grinding roller body 1's side is provided with the draw-in groove structure 3 that is used for clamping the roller shell.
In this embodiment, the clamping groove structure 3 and the grinding roller body 1 are of an integrated structure. In order to facilitate the disassembly and replacement of the clamping groove structure 3, in another embodiment, the clamping groove structure 3 and the grinding roller body 1 are combined, and the clamping groove structure 3 is fixed on the grinding roller body 1 through a fastening bolt 6. Taking an HP-1003 medium speed coal mill as an example, the size of the fastening bolt 6 is phi 25mm multiplied by 65 mm.
In order to facilitate the detachable connection of the composite block 2 and the grinding roller body 1, in this embodiment, the clamping groove structure 3 includes a large-head clamping groove 4 and a small-head clamping groove 5, the large-head clamping groove 4 is arranged on the lower portion of the side surface of the grinding roller body 1, the small-head clamping groove 5 is arranged on the upper portion of the side surface of the grinding roller body 1, and two ends of the composite block 2 are respectively clamped in the large-head clamping groove 4 and the small-head clamping groove 5. Taking an HP-1003 medium-speed coal mill as an example, the size of the large-head clamping groove 4 of the grinding roller body 1 is 15mm multiplied by 35mm, and the size of the small-head clamping groove 5 is 20mm multiplied by 35 mm.
In order to save the manufacturing cost of the grinding roller body 1, Cr is selected as the material of the grinding roller body 15。
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (6)
1. The grinding roller of the detachable ceramic composite metal matrix medium-speed coal mill is characterized by comprising a grinding roller body and a roller sleeve, wherein the roller sleeve consists of a plurality of composite blocks detachably connected with the grinding roller body; the grinding roller is characterized in that a clamping groove structure used for clamping the roller sleeve is arranged on the side face of the grinding roller body, the clamping groove structure and the grinding roller body are of a combined structure, the clamping groove structure is fixed on the grinding roller body through a fastening bolt, the grinding roller body is conical, the clamping groove structure comprises a large-head clamping groove and a small-head clamping groove, the large-head clamping groove is formed in the lower portion of the side face of the grinding roller body, the small-head clamping groove is formed in the upper portion of the side face of the grinding roller body, and two ends of a composite block are clamped in the large-head clamping groove and the small-.
2. The detachable ceramic composite metal matrix medium speed coal mill grinding roller according to claim 1, wherein the material of the composite block is a ceramic reinforced metal matrix composite.
3. The removable ceramic composite metal based medium speed coal mill grinding roller of claim 1 wherein the coal mill is of the model number HP-1003.
4. The removable ceramic composite metal based medium speed coal pulverizer grinding roller of claim 3, wherein the number of the composite blocks is 24, and the thickness of the composite layer of the composite blocks is 41 mm.
5. The removable ceramic composite metal based medium speed coal mill grinding roller of claim 4, wherein the large head slot size is 15mm x 35mm, and the small head slot size is 20mm x 35 mm.
6. The detachable ceramic composite metal matrix medium speed coal mill grinding roller of claim 5, wherein the material of the grinding roller body is Cr5。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711283232.2A CN107824280B (en) | 2017-12-07 | 2017-12-07 | Detachable ceramic composite metal matrix medium speed pulverizer grinding roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711283232.2A CN107824280B (en) | 2017-12-07 | 2017-12-07 | Detachable ceramic composite metal matrix medium speed pulverizer grinding roller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107824280A CN107824280A (en) | 2018-03-23 |
| CN107824280B true CN107824280B (en) | 2021-03-26 |
Family
ID=61641779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711283232.2A Active CN107824280B (en) | 2017-12-07 | 2017-12-07 | Detachable ceramic composite metal matrix medium speed pulverizer grinding roller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107824280B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110882761B (en) * | 2019-12-12 | 2021-02-26 | 江苏吉能达环境能源科技有限公司 | Vertical grinding roller structure for cement finish grinding |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29910072U1 (en) * | 1999-06-09 | 1999-08-05 | Gerlach-Anlagenbau GmbH, 56249 Herschbach | Roller mill for crushing stones, especially limestone |
| CN203936192U (en) * | 2014-02-13 | 2014-11-12 | 太原科技大学 | A kind of roll of rolled metal corrugated plating |
| CN204034783U (en) * | 2014-08-04 | 2014-12-24 | 广州市金宇风动钎机有限公司 | Breaker roll |
| CN105126959A (en) * | 2015-08-28 | 2015-12-09 | 南通高欣耐磨科技股份有限公司 | Manufacturing method of detachable ceramic alloy composite grinding roller |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205965994U (en) * | 2016-08-26 | 2017-02-22 | 江苏新业重工股份有限公司 | Compression roller of roll squeezer |
-
2017
- 2017-12-07 CN CN201711283232.2A patent/CN107824280B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29910072U1 (en) * | 1999-06-09 | 1999-08-05 | Gerlach-Anlagenbau GmbH, 56249 Herschbach | Roller mill for crushing stones, especially limestone |
| CN203936192U (en) * | 2014-02-13 | 2014-11-12 | 太原科技大学 | A kind of roll of rolled metal corrugated plating |
| CN204034783U (en) * | 2014-08-04 | 2014-12-24 | 广州市金宇风动钎机有限公司 | Breaker roll |
| CN105126959A (en) * | 2015-08-28 | 2015-12-09 | 南通高欣耐磨科技股份有限公司 | Manufacturing method of detachable ceramic alloy composite grinding roller |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107824280A (en) | 2018-03-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107469999B (en) | A kind of grinding process and equipment of ceramic raw material | |
| CN207254424U (en) | A kind of medium-speed coal mill roller roller set | |
| CN107824280B (en) | Detachable ceramic composite metal matrix medium speed pulverizer grinding roller | |
| CN106861824A (en) | A kind of new roller flour mill | |
| CN201135895Y (en) | Counterattack plate type fine breaking machine | |
| CN101947480A (en) | Steel dental plate crusher and manufacture method thereof | |
| CN201287060Y (en) | Vertical type crusher | |
| CN109365087A (en) | Grinding machine | |
| CN204799329U (en) | Garrulous mill | |
| CN207357239U (en) | A kind of structure for improving roller press squeeze roll roller set side wearability | |
| CN206868316U (en) | A kind of novel wear resistant high-pressure roller mill | |
| US20130126649A1 (en) | Ring for Grinding Mill | |
| CN104907128A (en) | Disintegrating machine and disintegrating method thereof | |
| CN202638513U (en) | Lining plate of ball mill | |
| CN205797358U (en) | In a kind of, arch high-wearing feature is combined lining board for grinding discs | |
| CN110773277A (en) | Combined metal ceramic composite integrated dynamic and static ring for coal mill and preparation method | |
| CN201565336U (en) | Pollution-free crusher with multi-edge cutters | |
| CN205797326U (en) | A kind of roll squeezer pressure roller | |
| CN207042650U (en) | A kind of wear-resisting separator for ceramic raw material particulate abrasive | |
| CN210474161U (en) | Novel grinding roller sleeve device of vertical mill | |
| CN210474164U (en) | Grinding roller of coal mill | |
| CN210112909U (en) | A ball mill for molybdenum ore | |
| CN211216916U (en) | Combined metal ceramic composite integrated dynamic and static ring of coal mill | |
| CN203620703U (en) | Metal-based ceramic composite grinding roller of vertical grinding machine | |
| CN106076481B (en) | Vertical Mill striped formula abrasive roller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |