A coal preparation equipment anti-running coal system and coal preparation equipment

Abstract

The invention discloses a coal leakage preventing system for coal preparation equipment and the coal preparation equipment. The coal leakage preventing system comprises a detection unit, a branch pipe and a control valve, and a bottom flow mouth communicates with or is disconnected from the input end of the branch pipe and a bottom flow pipe through the control valve; when the detection unit detects that decompression of a pressured two-product dense medium cyclone occurs, the control valve is controlled to enable the bottom flow mouth to communicate with the input end of the branch pipe and disconnect the bottom flow mouth from the bottom flow pipe; when the detection unit detects that decompression of the pressured two-product dense medium cyclone stops, the control valve is controlled to disconnect the bottom flow mouth from the input end of the branch pipe and enable the bottom flow mouth to communicate with the bottom flow pipe. According to the coal leakage preventing system and the coal preparation equipment, leaked coal is recycled when decompression of the pressured two-product dense medium cyclone occurs, and the system operation technology is recovered to the normal state after the decompression state returns to the normal state.

Description

technical field [0001] The invention relates to the technical field related to coal preparation, in particular to a coal preparation prevention system for coal preparation equipment and coal preparation equipment. Background technique [0002] Dense medium cyclone is a kind of equipment that uses centrifugal force field to strengthen the separation of fine-grained ore particles in dense medium. Get precise sorting. The equipment has simple structure, no moving parts, and high sorting efficiency. For the coal preparation industry, the upper limit of the feed size of the dense medium cyclone can reach 50mm, and the lower limit of the effective separation can reach 0.1mm, and with the change of the specification parameters of the cyclone, the feed size and the lower limit of the separation will change. Something has changed. When separating fine-grained coal, the possible deviation of the dense medium cyclone is E=0.02-0.06, and the separation efficiency is high. At the same...

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Problems solved by technology

[0010] Based on this, it is necessary to provide a coal preparation equipment anti-coal escape system and coal preparation equipment in view of the technical problem that the existing technology is likely to cause coal escape when the pressurized two-product dense medium cyclone is in a state of pressure loss.

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