An online adjustable pulverized coal concentrator

Abstract

An online adjustable pulverized coal concentrator, including a pulverized coal flow channel, an adjustable stop mechanism, an adjustable pulverized coal flow distribution mechanism, a light / concentrated side pulverized coal channel, and an external / internal primary air; in the adjustable stop mechanism, The wear-resistant block is inserted into the pulverized coal channel through the block channel, the block scale is fixed on the side surface of the wear-resistant block, and the block sealing flange cooperates with the sealing ring to fix and seal the wear-resistant block; in the adjustable pulverized coal flow mechanism, The adjustable splitter plate is connected to the fixed splitter plate through a hinge, and the sealed dial records the position of the adjustable splitter plate; the pulverized coal airflow collides with the wear-resistant block to change the direction of movement, and then separated by the adjustable splitter baffle, it is divided into low / high Concentration Two streams of pulverized coal flow through the light / concentrated side coal pulverized channel and enter the outer / inner primary air channel to form a pulverized coal concentration effect of inner thicker and outer light; adjust the insertion depth of the wear-resistant stopper and the position of the adjustable splitter plate to realize On-line adjustment of pulverized coal concentration effect under variable coal type wide working conditions.

Description

Technical field [0001] The invention belongs to the field of combustion technology, relates to a pulverized coal concentrator, and further relates to an on-line adjustable pulverized coal concentrator with an adjustable stopper mechanism and an adjustable pulverized coal splitting mechanism. Background technique [0002] According to the principle of pulverized coal separation, pulverized coal concentrators are mainly divided into: block type pulverized coal concentrator, gravity type pulverized coal concentrator, centrifugal pulverized coal concentrator and shutter type pulverized coal concentrator. The use of gravity centrifugal principle to concentrate pulverized coal has a low concentration rate and insufficient adaptability to changes in coal types and primary wind speed; the core components of the pulverized coal concentrator based on the collision principle face serious wear problems, short service life, and difficult maintenance and replacement . In the existing swirl bu...

AI Technical Summary

Problems solved by technology

The concentration rate of coal powder concentrated by the principle of gravity centrifugation is low, and the adaptability to the change of coal type and the change of primary wind speed is insufficient; the core components of the coal powder concentrator based on the collision principle face serious wear problems, the service life is short, and it is difficult to maintain and replace

In the existing swirl burner, the stopper for the pulverized coal concentration is often set inside the primary air duct, the processing technology is complicated, and it is severely worn and difficult to replace during use.

At the same time, the existing pulverized coal concentrators mostly adopt fixed structures, which do not have adjustability, and their adaptability is poor

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