CN117463459A - Disc coal mill with external bearing type loading method - Google Patents
Disc coal mill with external bearing type loading method Download PDFInfo
- Publication number
- CN117463459A CN117463459A CN202311632126.6A CN202311632126A CN117463459A CN 117463459 A CN117463459 A CN 117463459A CN 202311632126 A CN202311632126 A CN 202311632126A CN 117463459 A CN117463459 A CN 117463459A
- Authority
- CN
- China
- Prior art keywords
- disc
- coal
- grinding
- mill
- coal mill
- 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.)
- Pending
Links
- 239000003245 coal Substances 0.000 title claims abstract description 48
- 238000011068 loading method Methods 0.000 title claims abstract description 20
- 238000000227 grinding Methods 0.000 claims abstract description 43
- 238000003801 milling Methods 0.000 claims description 7
- 239000003638 chemical reducing agent Substances 0.000 claims description 4
- 238000010298 pulverizing process Methods 0.000 claims 1
- 238000005065 mining Methods 0.000 abstract description 2
- 238000005299 abrasion Methods 0.000 description 7
- 239000000843 powder Substances 0.000 description 7
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002817 coal dust Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000002699 waste material 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
Abstract
The invention provides a disc coal mill with an external bearing type loading method, which relates to the field of mining equipment and comprises the following components: the grinding bowl lining plate horizontal angle of the grinding disc device is 11 degrees, and the grinding roller horizontal angle of the grinding roller device is 22 degrees. Compared with the existing bowl-type medium-speed coal mill, the disc-type coal mill saves more than 15% of electric energy, prolongs the service lives of the grinding roller and the grinding bowl of the grinding bowl lining plate by 20%, and effectively reduces the daily use cost of a user.
Description
Technical Field
The invention relates to the field of mining equipment, in particular to a disc coal mill with an external bearing type loading method.
Background
At present, the conventional bowl-type medium-speed coal mill has the disadvantages that the horizontal angle of a milling bowl lining plate is 20 degrees, the horizontal angle of a milling roller is 30 degrees, the width of the milling roller is narrower due to the cooperation, the area of an effective milling area is small, and the unit consumption of milling coal is high; meanwhile, the abrasion area of the grinding roller is close to the big end of the grinding roller, the abrasion of the grinding roller is uneven, and the abrasion piece material waste rate is higher.
Disclosure of Invention
The invention aims to provide a disc coal mill with an external bearing type loading method so as to solve the problems.
In a first aspect, an embodiment of the present invention provides a disc coal pulverizer with an external load-bearing loading method, including: the grinding bowl lining plate horizontal angle of the grinding disc device is 11 degrees, and the grinding roller horizontal angle of the grinding roller device is 22 degrees.
In some embodiments, a horizontal external load-bearing hydraulic loading device is also included for reducing the base load of the disc coal mill.
In some embodiments, the horizontal external load-bearing hydraulic loading device is external.
In some embodiments, the coal grinding device further comprises a coal dropping pipe, and raw coal enters the grinding disc device from the coal dropping pipe.
In some embodiments, a speed reducer is further included for driving the grinding disc device to rotate.
In some embodiments, the device further comprises a powder selector for selecting the pulverized coal after milling by the mill roller device.
In some embodiments, an H-separator liner device is also included for controlling coal fines fineness.
Compared with the existing bowl-type medium-speed coal mill, the disc-type coal mill provided by the embodiment of the invention saves more than 15% of electric energy, prolongs the service lives of the grinding roller and the grinding bowl lining plate by 20%, and effectively reduces the daily use cost of a user.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a disc coal pulverizer with an external load-bearing method according to an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of the grinding disc and grinding roller assembly of the disc coal pulverizer of the externally mounted load bearing method of FIG. 1;
FIG. 3 is an enlarged view of a portion of a horizontal external load-bearing hydraulic loading device of the disc coal pulverizer of the external load-bearing loading method of FIG. 1;
fig. 4 is an enlarged view of a portion of an H-separator liner assembly of the disc coal pulverizer of the externally loaded loading method of fig. 1.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1 to 4 in combination, a disc coal mill provided by an embodiment of the present invention at least includes a speed reducer 1, a grinding disc device 2, a grinding roller device 3, a horizontal external bearing type hydraulic loading device 4, and a powder concentrator 5.
Raw coal enters the millstone device 2 through the coal dropping pipe 6, the millstone device 2 rotates under the drive of the speed reducer 1, the raw coal is carried to be extruded under the millstone roller device 3 to be ground into powder, the pulverized coal is carried by the power wind (entering from the lower shell) to be subjected to powder selection through the powder selector, and qualified pulverized coal enters the collecting device of a user to be stored and used.
In this embodiment, as specifically shown in fig. 2, the following is set:
1. the horizontal angle of the grinding bowl lining plate of the grinding disc device 2 is 11 degrees, the horizontal included angle of the grinding roller device 3 is 22 degrees, under the cooperation, the width of the grinding roller is increased by 18 percent compared with that of a bowl medium-speed coal mill, the diameter of the grinding roller is increased by 7 percent, and therefore the energy consumption of grinding coal is effectively reduced, and the service life of a wearing part is prolonged.
2. The horizontal external bearing type hydraulic loading device 4 is skillfully used, so that the basic bearing load is effectively reduced, and the user capital cost is reduced; because the horizontal external bearing type hydraulic loading device 4 is external, abrasion caused by coal dust scouring and burning loss caused by internal ignition are avoided.
An h-separator body liner device: the powder selecting fineness of the powder selecting machine is effectively improved.
The embodiment of the external bearing type loading method of the disc coal mill provided by the application has at least the following technical effects:
1. the horizontal angle of the grinding bowl liner plate is 11 degrees and the horizontal included angle of the grinding roller is 22 degrees, the width of the grinding roller is increased by 18 percent compared with that of a bowl medium-speed coal mill, the diameter of the grinding roller is increased by 7 percent, the energy consumption of the grinding coal is reduced by 15 percent compared with that of the conventional bowl medium-speed coal mill, meanwhile, the abrasion area of the grinding roller is positioned in the middle of the grinding roller, the abrasion of the grinding roller is uniform, and the service life of an abrasion piece can be prolonged by 20 percent.
2. The horizontal external bearing type hydraulic loading device 4 can effectively reduce the basic bearing load, and compared with a wheel type medium-speed coal mill, the user basic construction cost is reduced by 20%; because the horizontal external bearing type hydraulic loading device 4 is external, the horizontal external bearing type hydraulic loading device 4 can be maintained for a long time.
3. Referring specifically to fig. 4, the h-separator liner device can increase the fineness of pulverized coal to a 200 mesh sieving rate to 90%, and the wear life is prolonged by 50% due to the optimization of the airflow field.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. An externally mounted load-bearing type disc coal pulverizer comprising: the grinding disc device and the grinding roller device are characterized in that the horizontal angle of a grinding bowl lining plate of the grinding disc device is 11 degrees, and the horizontal angle of a grinding roller of the grinding roller device is 22 degrees.
2. The externally loaded disc coal mill of claim 1 further including a horizontal externally loaded hydraulic loading device for reducing the base load of the disc coal mill.
3. The externally loaded disc coal mill of claim 2 wherein the horizontally externally loaded hydraulic loading device is external.
4. The externally loaded disc coal mill of claim 1 further comprising a coal drop tube from which raw coal enters the mill assembly.
5. The externally loaded disc mill of claim 1 further comprising a speed reducer for driving the disc device to rotate.
6. The externally loaded disc coal mill of claim 4 further comprising a pulverizer for pulverizing pulverized coal after milling by the mill roller assembly.
7. The externally loaded disc coal mill of claim 1 further including an H-separator liner means for controlling coal fines fineness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311632126.6A CN117463459A (en) | 2023-11-30 | 2023-11-30 | Disc coal mill with external bearing type loading method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311632126.6A CN117463459A (en) | 2023-11-30 | 2023-11-30 | Disc coal mill with external bearing type loading method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117463459A true CN117463459A (en) | 2024-01-30 |
Family
ID=89625734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311632126.6A Pending CN117463459A (en) | 2023-11-30 | 2023-11-30 | Disc coal mill with external bearing type loading method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117463459A (en) |
-
2023
- 2023-11-30 CN CN202311632126.6A patent/CN117463459A/en active Pending
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