Sundries separator for positive pressure coal dust preparation system

Abstract

The invention discloses a sundries separator for a positive pressure coal dust preparation system, comprising an air current baffle and a rotary type separating grille arranged in an air current main pipe as well as an upward-inserted slab door and a downward-inserted slab door arranged in a bypass wind channel. A capture grille and a barrier grille are arranged between the two slab doors, and a material taking door is arranged between the two grilles. The invention can effectively separate sundries in coal dust air current and take out the sundries in a sealed state to prevent leakage of coal dust, thereby not causing pollution to the environment, eliminating block of sundries to the separator, ensuring the safe operation of the dust preparing system, avoiding the operation of manually cleaning a tailing separator, improving the separating effect of a coarse powder separator, improving the particle size distribution characteristic of coal dust to obtain fine coal dust and simultaneously improving the air current work condition in the coarse powder separator, reducing the flowing resistance and electricity consumption in preparing coal dust.

Description

technical field [0001] The invention belongs to a separation device for separating impurities (such as wood blocks, straw, chemical fiber fabrics, rubber, etc.) material separator. Background technique [0002] The pulverized coal preparation system is an indispensable and important link in the production process of thermal power plants. In order to ensure the high efficiency of boiler combustion, the coal must be ground into finer powder, and the pulverized coal pulverized by the coal mill enters the coarse Before entering the coarse powder separator, a debris separator should be installed to separate the wood, straw, chemical fiber fabric, rubber and other substances in the coal powder. Due to their low density and large volume, these substances cannot be ground in the coal mill, and are directly carried into the coarse powder separator by the wind. In actual operation, straw, cloth strips, rubber, iron wire, woven bags and other sundries mixed in the raw coal ar...

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Problems solved by technology

The original debris separator cannot be effectively sealed in the positive pressure system and cannot be cleaned of debris. At present, there is no debris separator in the positive pressure pulverized coal preparation system of the steel ball pulverizer that has been put into production.

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