Fine crushing roller of wear-resisting crusher

Abstract

The invention relates to the field of a crusher and particularly relates to a fine crushing roller of a wear-resisting crusher. The fine crushing roller has high strength and is used for crushing calcium carbide. The fine crushing roller is formed by a roller base body 1 and a surfacing layer 2 covering the whole surface of the base body. The fine crushing roller is characterized in that the base body 1 is formed by casting 35CrMo steel; the surfacing layer 2 is formed by welding a wear-resisting material on the surface of the base body in a surfacing manner and is formed by a plurality of welding channels which are parallel to the axial direction of a roller shaft; the welding channels are uniformly, orderly and tightly arrayed on the surface of the whole roller; and uniformly-arrayed bulges 3 are formed in the radial direction of the roller. A contact surface with a crushed material is smoother compared with a crushing tooth and is integrated with the roller, so as not to be easily damaged; and the base body is made of anti-welding-crack, wear-resisting and anti-impact materials, and a new crushing working surface is repeatedly arranged on the surface under the condition that the crushing working surface is abraded, so that the effect of being used for a plurality of times is achieved.

Description

technical field [0001] The invention relates to the field of crushers, in particular to a high-strength wear-resistant crusher fine-breaking roller that can be used for calcium carbide crushing. Background technique [0002] Roller crusher is a commonly used equipment in the field of crushers. Its working principle is that a pair of toothed rollers with toothed plates on the surface form a pair of working pairs that move in opposite directions. The pressure crushes the material. Because it is difficult for a crusher with a crushing mechanism to meet the requirements of high output, a two-stage roller pellet crusher has appeared in production practice. After the material is crushed by the upper roller (first-stage working part), it falls between the next-stage rollers (second-stage working part) and is crushed again, so that the material reaches the required particle size after two consecutive crushings. The commonly used calcium carbide crusher basically adopts this two-st...

AI Technical Summary

Problems solved by technology

However, the "cutting" and extrusion state between the crushing teeth on the tooth plate and the material will cause each crushing tooth to be under full stress from the top to the root for a long time. Even if the tooth plate is made of wear-resistant materials, it will still It is extremely susceptible to wear and tear, and once a tooth on the roller fails to work normally, the entire tooth plate must be replaced, which not only affects production efficiency, but also increases production costs

Because the traditional calcium carbide crusher adopts the method of covering the tooth plate on the roller, the roller is generally made of traditional Q235B carbon structural steel base material. After repeated use, its impact resistance will decrease, and new rollers must be replaced. The original roller can only be recycled in the form of scrap iron, which increases the cost of the enterprise and forms a new waste of resources

In recent years, there has been a wear-resistant roller production method that directly uses wear-resistant materials to make rollers and mills broken teeth on the surface of the rollers. All cylinders are faced with the risk of being unusable or reprocessed, which will have an impact on the production efficiency and cost of the enterprise

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