CN220610691U - Transmission mechanism of coal mill and coal mill comprising same - Google Patents
Transmission mechanism of coal mill and coal mill comprising same Download PDFInfo
- Publication number
- CN220610691U CN220610691U CN202322249611.7U CN202322249611U CN220610691U CN 220610691 U CN220610691 U CN 220610691U CN 202322249611 U CN202322249611 U CN 202322249611U CN 220610691 U CN220610691 U CN 220610691U
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- grinding
- shaft
- crushing
- cavity
- accelerating
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 45
- 239000003245 coal Substances 0.000 title claims abstract description 44
- 238000000227 grinding Methods 0.000 claims abstract description 98
- 239000000463 material Substances 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000001133 acceleration Effects 0.000 description 7
- 239000002817 coal dust Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
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- Crushing And Grinding (AREA)
Abstract
The utility model discloses a transmission mechanism of a coal mill and the coal mill formed by the transmission mechanism, relates to the technical field of coal mine production equipment, and solves the technical problem that the existing coal mill cannot meet the rotation requirements of a crushing shaft and a grinding shaft at the same time. The transmission mechanism comprises a crushing shaft, a grinding shaft and a bearing structure thereof, wherein the grinding shaft is connected with a motor, the crushing shaft and the grinding shaft are arranged in a vertically staggered mode, and the crushing shaft and the grinding shaft are transmitted through an accelerating mechanism. The coal mill comprises the transmission mechanism, a crushing cavity, a grinding cavity, an outlet cavity and a transmission mechanism cavity. According to the utility model, the crushing shaft and the grinding shaft are arranged in different shafts, and the accelerating mechanism is additionally arranged according to the speed difference between the crushing shaft and the grinding shaft, so that the rotation requirements of the crushing shaft and the grinding shaft can be simultaneously met.
Description
Technical Field
The utility model relates to the technical field of coal mine production equipment, in particular to a transmission mechanism of a coal mill and the coal mill formed by the transmission mechanism.
Background
Coal mills are often used in plants that use coal as the primary fuel in order to increase the combustion efficiency of the coal. Existing coal mills are generally large-scale equipment, and for small-scale factories, the coal consumption of the existing coal mills is generally not up to the requirement of using large-scale coal mills. If a large coal mill is used for grinding coal for standby, the ground coal dust is easy to combine with hydraulic gas in air in the storage process to form a block again, so that the coal dust is hardened in the storage box, and the combustion efficiency of the coal dust is affected.
Based on this, designed a coal pulverizer on the market, be applicable to small-size factory and use, it divide into crushing and the two-stage processing structure of lapping that sets up from top to bottom, drive the drive shaft rotation through driving gear and driven gear, the drive shaft drives and grinds the seat rotation, grinds the seat and drives crushing axle rotation, crushing axle drive a plurality of crushing sword rotations, smashes coal through a plurality of crushing sword. However, in practical application, since the crushing shaft and the grinding shaft of the coal mill are coaxially connected, the grinding seat depends on the extrusion action with the fixing seat, the requirement on the rotation speed is usually not high, the crushing cutter needs to depend on the cutting force caused by the rotation of the crushing cutter, and the low rotation speed cannot meet the cutting requirement, so that the structure cannot meet the rotation requirements of the crushing shaft and the grinding shaft at the same time.
Disclosure of Invention
The utility model provides a transmission mechanism of a coal mill and the coal mill formed by the transmission mechanism, aiming at the problems in the prior art, so as to solve the technical problem that the existing coal mill cannot meet the rotation requirements of a crushing shaft and a grinding shaft at the same time.
The technical scheme adopted by the utility model is as follows:
the utility model provides a drive mechanism of coal pulverizer, includes crushing axle and grinds axle and bearing structure thereof, grinds the axle and is connected with the motor, it is staggered from top to bottom to smash the axle and grind the axle, smash the axle and grind and carry out the transmission through acceleration mechanism between the axle.
Further, the accelerating mechanism comprises a crushing shaft gear fixed at the lower end of the crushing shaft, a grinding shaft output transmission gear fixed at the upper end of the grinding shaft, an accelerating rotating shaft, an accelerating large gear and an accelerating small gear which are fixed on the accelerating rotating shaft, wherein the crushing shaft gear is in meshed connection with the accelerating large gear, the grinding shaft output transmission gear is in meshed connection with the accelerating small gear, the size of the crushing shaft gear is smaller than that of the accelerating small gear, and the size of the grinding shaft output transmission gear is larger than that of the accelerating small gear.
Based on the transmission mechanism, the utility model also provides a coal mill which comprises the transmission mechanism, a crushing cavity, a grinding cavity, an outlet cavity and a transmission mechanism cavity, wherein the crushing shaft is arranged in the crushing cavity, and a crushing cutter is arranged on the crushing shaft; the outlet cavity is arranged below the grinding cavity, the grinding cavity comprises a fixing seat, a grinding hole penetrating through the upper portion and the lower portion is arranged on the fixing seat, the grinding shaft penetrates through the grinding hole and the outlet cavity, a grinding seat is fixed on the part, located on the grinding hole, of the grinding shaft, and the distance between the grinding seat and the wall of the grinding hole is in a trend of being large in the upper portion and small in the lower portion; the lower ends of the accelerating mechanism and the crushing shaft and the upper end of the grinding shaft are arranged in the cavity of the transmission mechanism, and the cavity of the transmission mechanism is isolated from the crushing cavity and the grinding cavity.
Further, the crushing cavity and the grinding cavity are communicated through inclined and smooth material channels, so that material accumulation is avoided.
More preferably, the top of the crushing cavity is provided with a feed inlet at one side of the opposite side of the bottom material passage opening, so that the coal blocks are crushed as much as possible.
Further, the side wall of grinding seat is provided with the grinding screw thread tooth, has not only increased the grinding dynamics, and the rack of screw thread form can also drive the coal material that grinds downwards at the rotation in-process, reduces the overgrinding, improves the coal grinding efficiency.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model designs a transmission mechanism of a coal mill, which is characterized in that a crushing shaft and a grinding shaft are arranged in different shafts, an accelerating mechanism is additionally arranged according to the speed difference between the crushing shaft and the grinding shaft, and then the transmission mechanism is applied to the coal mill, so that the rotation requirements of the crushing shaft and the grinding shaft can be met simultaneously.
Drawings
FIG. 1 is a schematic view of a coal pulverizer in accordance with an embodiment of the present utility model;
fig. 2 is a schematic structural view of the polishing pad.
Wherein, the spare part that the reference numeral corresponds is respectively:
1. a body; 2. a feed inlet; 3. a crushing knife; 4. a crushing shaft; 5. crushing a shaft gear; 6. an acceleration pinion; 7. accelerating the rotating shaft; 8. accelerating the large gear; 9. grinding the shaft output transmission gear; 10. a transmission mechanism cavity; 11. a grinding seat; 11-1, grinding the thread teeth; 12. grinding the shaft; 13. a discharge port; 14. a motor; 15. a fixing seat.
Detailed Description
The utility model will be further illustrated by the following description and examples, which include but are not limited to the following examples.
Example 1
As shown in fig. 1, the schematic structure of the coal mill provided in this embodiment is as follows: comprises a machine body 1 and supporting legs, wherein the interior of the machine body 1 is divided into a crushing cavity, a transmission mechanism cavity 10, a grinding cavity and an outlet cavity from top to bottom. The right side of the top of the crushing cavity is provided with a feed inlet 2, the left side of the bottom of the crushing cavity is provided with an inclined and smooth channel leading to the grinding cavity, the middle of the top of the crushing cavity and the bottom of the transmission mechanism cavity 10 are provided with bearing seats on the same vertical axis, the two bearing seats are respectively used for fixing a crushing shaft 4, and the part of the crushing shaft 4, which is positioned in the crushing cavity, is provided with a plurality of crushing cutters 3. The part of the crushing shaft 4, which is positioned in the transmission mechanism cavity 10, is provided with a crushing shaft gear 5; the transmission mechanism cavity 10 is arranged between the crushing cavity and the grinding cavity, and an accelerating mechanism is further arranged in the transmission mechanism cavity 10 and consists of an accelerating rotating shaft 7, an accelerating pinion 6 and an accelerating large gear 8 which are fixed on the accelerating rotating shaft 7, wherein the crushing shaft gear 5 is meshed with the accelerating large gear 8; the grinding cavity comprises a fixing seat 15 which is used for separating the machine body 1 up and down, a grinding hole is formed in the fixing seat 15, a grinding seat 11 is arranged in the grinding hole, the distance between the grinding seat 11 and the wall of the grinding hole is in a trend of big top and small bottom, the grinding seat 11 is fixed on a grinding shaft 12, and the lower end of the grinding shaft 12 penetrates through the outlet cavity to extend out of the machine body 1 and is connected with a motor 14. The upper end of the grinding shaft 12 penetrates into the transmission mechanism cavity 10 and is in rotary connection with a bearing at the top of the transmission mechanism cavity 10, and a grinding shaft output transmission gear 9 is fixed on the part of the grinding shaft 12 positioned in the transmission mechanism cavity 10, and the grinding shaft output transmission gear 9 is meshed with the acceleration pinion 6. The outlet cavity is located fixing base 15 below, and the coal material falls into the outlet cavity through grinding the gap between seat 11 and the grinding hole pore wall, and the bottom in outlet cavity is the slope setting, and the concave bottom of slope is provided with discharge gate 13.
In this embodiment, the size of the grinding shaft gear 5 is smaller than that of the accelerating pinion 6, and the size of the grinding shaft output transmission gear 9 is larger than that of the accelerating pinion 6, so as to ensure the multiple of acceleration. In this embodiment, the motor 14 drives the grinding shaft 12 and the grinding seat 11 and the grinding shaft output transmission gear 9 thereon to rotate in accordance with the rotation speed requirement of the grinding seat 11, and drives the accelerating pinion 6 to rotate through the grinding shaft output transmission gear 9, so as to realize primary acceleration, and the accelerating large gear 8 coaxial with the accelerating pinion 6 drives the smaller grinding shaft gear 5 to rotate, so as to realize secondary acceleration, and simultaneously meet different requirements of grinding and grinding through two-stage acceleration.
Example 2
In order to further improve the grinding efficiency, the side wall of the grinding seat 11 is provided with the grinding thread teeth 11-1, so that the grinding force is increased, the threaded racks can drive the ground coal to be downward in the rotating process, overgrinding is reduced, and the coal grinding efficiency is improved.
The present utility model can be preferably implemented according to the above embodiments.
Claims (5)
1. The transmission mechanism of the coal mill comprises a crushing shaft, a grinding shaft and a bearing structure thereof, wherein the grinding shaft is connected with a motor; the accelerating mechanism comprises a crushing shaft gear fixed at the lower end of the crushing shaft, a grinding shaft output transmission gear fixed at the upper end of the grinding shaft, an accelerating rotating shaft, and an accelerating large gear and an accelerating small gear fixed on the accelerating rotating shaft, wherein the crushing shaft gear is in meshed connection with the accelerating large gear, the grinding shaft output transmission gear is in meshed connection with the accelerating small gear, the size of the crushing shaft gear is smaller than that of the accelerating small gear, and the size of the grinding shaft output transmission gear is larger than that of the accelerating small gear.
2. A coal mill, which is characterized by comprising the transmission mechanism as claimed in claim 1, a crushing cavity, a grinding cavity, an outlet cavity and a transmission mechanism cavity, wherein the crushing shaft is arranged in the crushing cavity, and a crushing cutter is arranged on the crushing shaft; the outlet cavity is arranged below the grinding cavity, the grinding cavity comprises a fixing seat, a grinding hole penetrating through the upper portion and the lower portion is arranged on the fixing seat, the grinding shaft penetrates through the grinding hole and the outlet cavity, a grinding seat is fixed on the part, located on the grinding hole, of the grinding shaft, and the distance between the grinding seat and the wall of the grinding hole is in a trend of being large in the upper portion and small in the lower portion; the lower ends of the accelerating mechanism and the crushing shaft and the upper end of the grinding shaft are arranged in the cavity of the transmission mechanism, and the cavity of the transmission mechanism is isolated from the crushing cavity and the grinding cavity.
3. The coal pulverizer of claim 2, wherein the pulverizer chamber and the grinding chamber are in communication via an inclined, smooth-disposed material passageway.
4. A coal mill according to claim 3, wherein the top of the crushing chamber is provided with a feed opening offset to the side opposite the bottom material passage opening.
5. The coal pulverizer of claim 4, wherein the sidewall of the grinding seat is provided with grinding screw threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322249611.7U CN220610691U (en) | 2023-08-21 | 2023-08-21 | Transmission mechanism of coal mill and coal mill comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322249611.7U CN220610691U (en) | 2023-08-21 | 2023-08-21 | Transmission mechanism of coal mill and coal mill comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220610691U true CN220610691U (en) | 2024-03-19 |
Family
ID=90224006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322249611.7U Active CN220610691U (en) | 2023-08-21 | 2023-08-21 | Transmission mechanism of coal mill and coal mill comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220610691U (en) |
-
2023
- 2023-08-21 CN CN202322249611.7U patent/CN220610691U/en active Active
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