Wearing-resistant composite material fan coal mill hitting plate

Abstract

The invention discloses a wearing-resistant composite material fan coal mill hitting plate which comprises a metal substrate, a composite material insert block, dowels and a rubber ring, wherein through holes and dowel holes I are uniformly formed in the metal substrate; one end of the composite material insert block protrudes out; the other end of the composite material insert block is a steppedshaft; one end of the stepped shaft is sleeved by the rubber ring; a dowel holes II are formed in the composite material insert block; dowel holes III are formed in the rubber ring; the composite material insert block is embedded into the metal substrate; the dowels penetrate through the dowel holes I in the metal substrate, the dowel holes III in the rubber ring and the dowel holes II in the composite material insert block; the cross section of the protruding end of the composite material insert block takes the shape of a circle or a polygon. By adopting the hitting plate, the wearing resistance of the hitting plate can be remarkably improved, the service life of the hitting plate can be greatly prolonged, and in addition, a ceramic / metal-based composite material can be replaced in time after being damaged or peeled off, so that the production and repairing cost can be lowered, and the production efficiency can be improved.

Description

technical field [0001] The invention relates to a wear-resistant composite fan coal pulverizer strike plate, which belongs to the technical field of application of mechanical parts of power plants. Background technique [0002] Coal is currently the main basic material for power generation in domestic thermal power plants. The fan coal mill can grind coal balls into fine pieces, effectively improving the coal burning efficiency of large thermal power plants. According to the high, medium and low speed of the coal grinding parts, the power plant coal mill divides the power plant boiler coal mill into three different types. The fan coal mill belongs to the high-speed coal mill. The fan coal mill is used as a thermal power plant for comparison. An advanced pulverizing equipment, it has the three functions of crushing, drying and conveying coal powder at the same time. Compared with the ball mills widely used at present, it has the advantages of small investment, small footprint...

AI Technical Summary

Problems solved by technology

[0005] The present invention mainly aims at the problems that the striking plate of the existing fan coal mill is easy to wear, the service life is short, and the replacement of the protective liner is troublesome. Embedded in the through hole of the metal matrix, it can significantly improve the wear resistance of the striking plate, greatly improve the service life, and can be replaced in time after the ceramic / metal matrix composite material falls off, reducing production and maintenance costs and improving production efficiency

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