Bent arm suspending device between grinding roller assembly and plum blossom shaped frame of mill

Abstract

The invention discloses a bent arm suspending device between a grinding roller assembly and a plum blossom shaped frame of a mill. The bent arm suspending device comprises the plum blossom shaped frame with a cross arm shaft which is linked with the grinding roller assembly; a grinding roller shaft of the grinding roller assembly comprises an oblique connecting rod and a vertical grinding roller shaft connected to the lower end of the oblique connecting rod; the vertical grinding roller shaft is sequentially sleeved with a roller core and a grinding roller; two ends of the roller core are provided with bearing holes; upper and lower bearings are arranged in the bearing holes, respectively; upper and lower pressing covers buckling the upper and lower bearings connect the vertical grinding roller shaft, the roller core and the grinding roller integrally; an oil passing annular seam is formed between the vertical grinding roller shaft between the upper and lower bearings and the working face of the roller core; a lubricating oil groove is formed in the lower bearing cover, and is internally filled with lubricating thin oil; an oil guide ring is fixed onto the lower end of the vertical grinding roller shaft; a spiral oil channel is formed in the outer surface of the oil guide ring; a main oil channel is formed along the central axis of the vertical grinding roller shaft, and radially extends out of a vertical grinding roller shaft body above the upper bearing cover. The bent arm suspending device provided by the invention has the advantages that the structure is reasonable, and the grinding capability of the mill is improved.

Description

technical field [0001] The invention relates to a pulverizer, in particular to a flex arm suspension device between a pulverizer roller assembly and a quincunx frame. Background technique [0002] The suspension device between the traditional Raymond mill roller assembly and the plum blossom frame is as follows: image 3 As shown: the grinding roller assembly 101 (including the grinding roller shaft and the grinding roller and the grinding ring installed at the lower end of the grinding roller shaft) is connected with the plum blossom frame 103 through the cross arm shaft 102 . When working, the grinding roller assembly 101 is subjected to centrifugal force and swings with the cross-arm shaft 102 as the center of the circle, and the cross-arm shaft 102 swings in the cross-arm sleeve 104 of the plum blossom frame 103, so that the grinding roller 105 is pressed on the grinding ring 106 to grind the material. crushed. Since the center of mass of the grinding roller assembly of...

AI Technical Summary

Problems solved by technology

Since the center of mass of the grinding roller assembly of the traditional structure is approximately located near the point A of the grinding roller shaft, it is closer to the swing center of the cross-arm shaft 102, and the force arm is shorter, the moment of the grinding roller assembly 101 relative to the swing center of the cross-arm shaft 102 Smaller, so the rolling force converted from the self-weight of the grinding roller assembly is also small, which affects the rolling production capacity of the equipment

[0003] At the same time, after the mill with this structure works for a period of time, due to the manufacturing error of the equipment itself and the wear of the grinding roller 105 and the grinding ring 106 in the long-term work, the grinding roller swinging with the cross-arm shaft 102 as the center of the circle will be affected by the centrifugal force. 105 and the grinding ring 106 gradually produce an included angle, resulting in a gradual decrease in the contact area between the grinding roller 105 and the grinding ring 106 (theoretically, the point contact between the grinding roller 105 and the grinding ring 106), thereby reducing the output of the equipment. Can't meet production needs

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