Screening and crushing device suitable for narrow space of silo belt layer

Abstract

The invention discloses a screening and crushing device suitable for the narrow space of the belt layer of the silo. A screening machine is arranged above the center line of the furnace coal belt conveyor. ) falls onto the furnace coal belt conveyor and enters the boiler silo. The oversize (unqualified particle size) of the screening machine falls to the common feed belt conveyor of the crusher connected to the crusher through the oversize coal chute. Crusher feeding belt conveyor transports the oversized material to the crusher and crushes it to a qualified particle size, and then returns to the furnace coal belt conveyor through the coal sliding pipe and enters the boiler silo to complete the screening and crushing process of the particle size exceeding the standard. The particle size of coal entering the furnace exceeds the standard. The present invention arranges screening and crushing equipment in a limited space, which solves the problem of the particle size of the incoming coal and also solves the problem of the construction cost of the crushing building, which is a major technological innovation in this industry.

Description

technical field [0001] The invention relates to a screening and crushing arrangement process of a silo belt layer, in particular to installing a screening machine and a crusher in a limited space through technological transformation of the silo belt layer of a boiler coal conveying system, so as to solve the problem that the particle size of coal entering the furnace exceeds the standard . It is mainly used in the coal conveying system of the thermal power industry, and can also be used to effectively control the particle size of materials in coal, chemical, coking and other industries. Background technique [0002] The circulating fluidized bed boiler of thermal power coal gangue power plant burns coal gangue particles with a certain particle size. As the saying goes, pulverized coal boilers play with calorific value, and fluidized bed boilers play with particle size. Circulating fluidized bed boilers are generally devices that burn coal gangue particles in the range of 0...

AI Technical Summary

Problems solved by technology

The coal particle size exceeding the standard will have the following effects on the boiler: insufficient boiler output (reduced power generation), increased carbon content in boiler fly ash and bottom slag (unburned coal); increased wear of the boiler water wall leads to frequent tube burst accidents If the particle size exceeds the standard, the blast volume of the boiler will increase and the energy consumption will increase; if the slag particle size exceeds the standard, it will not be conducive to smooth slag discharge;

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