Secondary air bellow ash conveying device

Abstract

The invention discloses a secondary air bellow ash conveying device. The secondary air bellow ash conveying device comprises a secondary air bellow body, wherein the secondary air bellow body is divided into a plurality of compartments, and partition plates are arranged between the adjacent compartments; secondary air inlets are formed in the two sides of the secondary air bellow body, and a plurality of uniformly distributed burner nozzles are formed in the front end of the secondary air bellow body; a plurality of uniformly distributed fly ash collecting boxes are fixed at the bottom of thesecondary air box body; and the tops of the fly ash collecting boxes communicate with the interior of the bottom of the secondary air box body. The fly ash collecting boxes are arranged to form a certain angle, so that fly ash automatically flows into an ash conveying pipeline. Filter plates are taken down by sliding sliding blocks on sliding grooves, and clamping blocks leave clamping grooves, sothat an upper filter plate and a lower filter plate are separated, and the filter plates are cleaned. The secondary air bellow body is divided into the plurality of compartments through the partitionplates to form a plurality of air bellow bodies capable of independently distributing air, so that independent adjustment of secondary air is achieved, and interference of mutual adjustment in one air bellow body is avoided.

Description

technical field [0001] The invention relates to the technical field of bellows, in particular to a secondary bellows ash conveying device. Background technique [0002] The secondary air box is an important part of the coal-fired boiler combustion system. The air required for fuel combustion is distributed to each layer of burners through the secondary air box to ensure stable combustion. [0003] The fly ash in the secondary air is continuously deposited in the secondary air box, and the thickness gradually increases, so that the swirl air duct of the burner is partially buried, and the swirl air adjustment baffle is stuck and cannot be adjusted. A large amount of ash accumulates, blocks the nozzle, and destroys the normal swirl state of the burner swirl wind field. The formation of turbulent flow, turbulent flow, uneven matching of air volume and pulverized coal input amount and other unstable combustion. It affects the safe and economical operation of the boiler as a wh...

AI Technical Summary

Problems solved by technology

[0009] The existing secondary air box ash conveying device lacks a filter plate to block large particles of fly ash in advance, which may easily cause blockage of the ash conveying pipeline and affect the efficiency and effect of ash conveying; Reduced, resulting in a large amount of ash accumulation, unable to discharge, affecting the secondary air transportation, causing equipment wear; the existing secondary air box ash conveying device cannot clean the fly ash adhered to the inner wall of the ash conveying pipeline in time, which is likely to cause ash conveying pipes The blockage of the road will affect the progress of the ash conveying process and affect the combustion of the boiler

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