A pulverized coal pipeline pneumatic sliding door that can prevent jamming and its working method

Abstract

The invention discloses an anti-jamming pneumatic slide plate gate of a pulverized coal pipeline and a work method based on the anti-jamming pneumatic slide plate gate. The anti-jamming pneumatic slide plate gate comprises a rectangular frame which is connected with the pulverized coal pipeline through fixing bolts, wherein a slide plate which can block airstreams in the pulverized coal pipeline is arranged in the center of the rectangular frame; the rectangular frame comprises a front side frame, a rear side frame, a left side frame and a right side frame; the left and right side frames are separately provided with a sliding rail, so that the slide plate can slide along the sliding rails of the rectangular frame; the slide plate is connected with a slide plate draft device; asymmetrical chevron air passages are arranged above the rear side frame; symmetrical chevron air passages are arranged below the rear side frame; the air passages are all connected with compressed air pipelines; the compressed air pipelines are connected with a compressed air source; electromagnetic valves are arranged on the compressed air pipelines; the electromagnetic valves are connected with compressed air control systems; and in processes of inserting the slide plate into the rectangular frame and pulling the slide plate out of the rectangular frame, dust accumulated on the upper part, the lower part, the front part and the rear part of the slide plate is cleaned through airstreams in the compressed air pipelines, so that the problem of jamming of the slide plate caused by large friction force of the dust is solved.

Description

technical field [0001] The invention relates to a pulverized coal pipeline pneumatic sliding door capable of preventing jamming and a working method thereof. Background technique [0002] Pneumatic sliding door is widely used in electric power, metallurgy, chemical industry, light industry and other industries. It is an ideal equipment for controlling large flow changes, frequent starts and quick cut-offs. For power plant boilers, the pneumatic sliding door of the pulverized coal pipeline can adjust the primary air volume and primary powder volume in a timely manner, reasonably organize the aerodynamic field in the furnace, and make the combustion in the furnace reach the optimal state. is of great significance. [0003] The pneumatic sliding door is composed of a cylinder, a frame, a sliding board, a control system, an indicating device, an electromagnetic valve, and fastening bolts. Among them, the control system is the center, which receives the instructions of the oper...

AI Technical Summary

Problems solved by technology

[0005] One is that there is a large amount of dust in the running unit no matter inside or outside the pipeline, and these dusts are accumulated on the inserting plate. Once the inserting plate moves, part of the dust will enter the gap between the inserting plate and the sealing gasket, causing jamming astringent;

[0006] The second is that when the unit is running, there is a pressure difference between the two ends of the door, and there is a loading force parallel to the direction of the incoming flow, which increases the frictional resistance between the door and the gasket, causing jamming;

[0007] In a word, if the plug-in board is jammed, it will cause the control system instructions to be unable to be implemented, which will seriously affect the safe and economical operation of the unit.

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