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CN-224229208-U - Lubricating structure of main shaft of pulverizer

CN224229208UCN 224229208 UCN224229208 UCN 224229208UCN-224229208-U

Abstract

The utility model provides a lubricating structure of a main shaft of a pulverizer, which comprises a main shaft, a vertical bearing seat and a gear box, wherein the upper part of the main shaft is arranged on the vertical bearing seat through an upper bearing, the lower part of the main shaft is arranged in the gear box through a lower bearing, the bottom end head of the main shaft is arranged in the gear box through a thrust bearing, an oil pumping disc is arranged in the gear box between the lower bearing and the thrust bearing, a middle shaft hole is arranged in the main shaft, the top end of the main shaft is provided with a transverse hole, the bottom of the gear box is provided with an output oil way for conducting the middle shaft hole, the oil pumping disc is used for enabling gear oil to enter the upper bearing to lubricate through the output oil way, the middle shaft hole and the upper transverse hole in sequence, an oil guiding structure is arranged on the vertical bearing seat below the upper bearing seat, the oil guiding structure is communicated with an oil return opening of the gear box through a gap of the vertical bearing seat and the main shaft, and an internal oil way penetrating through the oil return opening and the output oil way is arranged in the gear box. The lubricating structure has the advantages of more scientific lubricating mode and difficult dust interference.

Inventors

  • LIU XIAOFENG

Assignees

  • 郑州红星矿山机器有限公司

Dates

Publication Date
20260512
Application Date
20250616

Claims (10)

  1. 1. The lubricating structure of the main shaft of the pulverizer is characterized by comprising the main shaft, a vertical bearing seat and a gear box; The upper part of the main shaft is arranged on the vertical bearing seat through an upper bearing, the lower part of the main shaft is arranged in the gear box through a lower bearing, and the bottom end head of the main shaft is arranged in the gear box through a thrust bearing; An oil pumping disc is arranged in a gear box between the lower bearing and the thrust bearing, a middle shaft hole is arranged in the main shaft, a transverse hole is arranged at the top end of the main shaft, an output oil way for conducting the middle shaft hole is arranged at the bottom of the gear box, and the oil pumping disc is used for enabling gear oil to enter the upper bearing through the output oil way, the middle shaft hole and the upper transverse hole in sequence to lubricate the upper bearing; The vertical bearing seat below the upper bearing is provided with an oil guide structure, the oil guide structure is communicated with an oil return port of the gear box through a gap between the vertical bearing seat and the main shaft, and an internal oil way penetrating through the oil return port and the output oil way is arranged inside the gear box.
  2. 2. The lubricating structure of the main shaft of a pulverizer as set forth in claim 1, further comprising a bracket, wherein the vertical bearing housing and the gear box are fixedly installed based on the bracket.
  3. 3. The lubricating structure of a main shaft of a pulverizer as set forth in claim 2, wherein the lower bearing is a self-aligning roller bearing.
  4. 4. The lubricating structure of the main shaft of a pulverizer as set forth in claim 1, wherein the thrust bearing is a thrust self-aligning roller bearing.
  5. 5. The lubricating structure of the main shaft of the pulverizer of claim 1, wherein the bottom end of the gear box is provided with a bearing seat corresponding to the thrust bearing, and the output oil way is arranged in the bearing seat.
  6. 6. The lubricating structure of the main shaft of a pulverizer as set forth in claim 1, wherein the oil guiding structure comprises an oil guiding disc and an oil guiding hole.
  7. 7. The lubricating structure of the main shaft of a pulverizer as set forth in claim 6, wherein said oil guiding holes are a plurality of inclined holes circumferentially distributed on said vertical bearing block.
  8. 8. The lubricating structure of the main shaft of a pulverizer as set forth in claim 1, wherein the internal oil passage includes an oil hole opened between the thrust self-aligning roller bearing and the self-aligning roller bearing for allowing gear oil to bypass the self-aligning roller bearing to reach the bottom end of the main shaft.
  9. 9. The lubricating structure of the main shaft of the pulverizer of claim 5, wherein the bearing seat is a component of an end cover at the bottom end of the gear box.
  10. 10. The lubricating structure of the main shaft of a pulverizer as set forth in claim 8, wherein said oil hole is located above the oil pump pan.

Description

Lubricating structure of main shaft of pulverizer Technical Field The utility model relates to the technical field of flour mills, in particular to a lubricating structure of a main shaft of a flour mill. Background The pulverizer is a device for pulverizing materials into powder, and is widely applied to the fields of metallurgy, building materials, chemical industry, mines and the like. As shown in fig. 2, in the lubrication structure of the existing pulverizer, an oil filling port is formed in a main shaft area at the upper part of the pulverizer, a filling bolt is installed, when lubrication is needed, the filling bolt is removed, grease is added for lubrication, an oil seal is installed at the lower part of a corresponding bearing to avoid the overflow of the grease, and a certain amount of grease is required to be periodically added in the use process to maintain the normal operation of the pulverizer. However, since the dust in the equipment is sufficient, a large amount of impurities are accumulated near the oiling bolt after long-period use, and part of the dust possibly enters the oil way, so that the lubricating grease is difficult to add. Disclosure of utility model The utility model aims at overcoming the defects of the prior art, and provides a lubricating structure of a main shaft of a pulverizer, which is more scientific in lubricating mode and is not easy to be disturbed by dust. In order to achieve the aim, the technical scheme adopted by the utility model is that the lubricating structure of the main shaft of the pulverizer comprises the main shaft, a vertical bearing seat and a gear box; The upper part of the main shaft is arranged on the vertical bearing seat through an upper bearing, the lower part of the main shaft is arranged in the gear box through a lower bearing, and the bottom end head of the main shaft is arranged in the gear box through a thrust bearing; An oil pumping disc is arranged in a gear box between the lower bearing and the thrust bearing, a middle shaft hole is arranged in the main shaft, a transverse hole is arranged at the top end of the main shaft, an output oil way for conducting the middle shaft hole is arranged at the bottom of the gear box, and the oil pumping disc is used for enabling gear oil to enter the upper bearing through the output oil way, the middle shaft hole and the upper transverse hole in sequence to lubricate the upper bearing; The vertical bearing seat below the upper bearing is provided with an oil guide structure, the oil guide structure is communicated with an oil return port of the gear box through a gap between the vertical bearing seat and the main shaft, and an internal oil way penetrating through the oil return port and the output oil way is arranged inside the gear box. Preferably, the vertical bearing seat and the gear box are fixedly installed on the basis of the support. Preferably, the lower bearing is a self-aligning roller bearing. Preferably, the thrust bearing is a thrust self-aligning roller bearing. Preferably, the bottom end of the gear box is provided with a bearing seat corresponding to the thrust bearing, and the output oil circuit is arranged in the bearing seat. Preferably, the oil guiding structure includes an oil guiding disc and an oil guiding hole. Preferably, the oil guide holes are a plurality of inclined holes circumferentially distributed on the vertical bearing seat. Preferably, the internal oil path includes an oil hole formed between the thrust self-aligning roller bearing and the self-aligning roller bearing, for allowing the gear oil to bypass the self-aligning roller bearing to reach the bottom end of the spindle. Preferably, the bearing seat is a component of an end cover at the bottom end of the gear box. Preferably, the oil hole is located above the oil pump pan. Compared with the prior art, the utility model has substantial characteristics and progress, in particular, the utility model arranges the loop channel of the gear oil around the main shaft in the pulverizer, so that the gear oil in the gear box can lubricate the bearings at the upper end and the lower end of the main shaft, and can circulate efficiently, without arranging a special external lubrication channel for the main shaft or providing lubricating grease for the main shaft from outside, thereby ensuring the long-term lubrication requirement of the main shaft. Drawings Fig. 1 is a schematic structural view of a lubrication structure of a main shaft of a pulverizer in the present utility model. Fig. 2 is a diagram showing a structure of adding lubricating oil to a main shaft of a conventional pulverizer in the prior art. In the figure, a motor wheel, a triangular belt, a belt pulley, a transmission shaft, a small bevel gear, a large bevel gear, a main shaft, a pump oil disc, a plum blossom frame, a grinding roller assembly, a grinding ring, a gear box, a bearing seat, a thrust aligning roller bearing, a power output oil circuit, a middle sh