A detachable ceramic composite metal matrix medium-speed coal mill grinding roller

Abstract

The invention discloses a detachable type ceramic composite metal base medium speed coal pulverizer roller. The detachable type ceramic composite metal base medium speed coal pulverizer roller comprises a pulverizer roller body and a roller sleeve; the roller sleeve is composed of multiple composite blocks detachably connected with the pulverizer roller body, the side face of the pulverizer rollerbody is provided with a clamping groove structure used for clamping of the roller sleeve, the composite blocks are detachably connected with the pulverizer roller body through the clamping groove structure, according to the medium speed coal pulverizer roller, only the roller sleeve needs to be replaced, later-period maintaining is facilitated, maintaining strength and maintaining time are reduced, the maintaining cost is reduced greatly, and the problems that an existing pulverizer roller is difficult to replace, large in labor intensity, high in maintaining cost and the like are solved.

Description

technical field [0001] The invention relates to a grinding roller of a coal pulverizer, in particular to a detachable ceramic composite metal base medium-speed coal pulverizer grinding roller. Background technique [0002] The medium-speed coal mill refers to a coal mill with a working speed of 50-300r / min. The motor drives the millstone to rotate through the reducer, and the material falls to the center of the millstone from the inlet through the air lock feeder, and the hot air enters from the air inlet at the same time. Grind inside. With the rotation of the grinding table, the material moves to the edge of the grinding table under the action of centrifugal force, and is crushed by the grinding roller when passing through the annular groove on the grinding table. The particles fall directly on the grinding disc for re-grinding. When the material in the airflow passes through the upper part of the centrifuge, under the action of the rotating rotor, the coarse powder falls...

AI Technical Summary

Problems solved by technology

There are the following problems in the use of this type of grinding roller: (1) Difficulty in maintenance; when the grinding roller of the coal mill fails due to wear, the grinding roller must be replaced as a whole. Taking the HP-1003 medium-speed coal mill as an example, the grinding roller With a diameter of 1451mm and a weight of 1.71 tons, it is very difficult to replace and the labor intensity of the workers is high; (2) Due to the difficulty in replacing and maintaining the grinding roller as a whole, it takes a long time for each maintenance (the coal mill needs to be shut down when the grinding roller is repaired and replaced. Can not be produced), affecting production; (3) Due to the wear and tear of the grinding roller surface, the entire grinding roller is replaced, and the maintenance cost of the equipment is high

[0005] The conventional design means to solve the above technical problems is to use more wear-resistant materials to prepare the grinding roller sleeves of medium-speed coal mills, but it only improves the wear resistance of the grinding rollers and prolongs the maintenance cycle of the coal mill, but it does not Fundamentally solve the problems of high replacement cost of grinding rollers, high maintenance labor intensity, and long maintenance time

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