Novel pebble coal feeding device with separation function

Abstract

The invention relates to a material transmission component in a pebble coal gas power transmission system of a heat power plant, in particular to a novel pebble coal feeding device with a separation function. The novel pebble coal feeding device comprises a material collection device (1), a material inlet pipe (2), an air inlet pipeline (3), a valve (4), a separating pipeline (5) and a material transmission pipeline (9), wherein the material collection pipeline (1) is connected to the upper part of the air inlet pipeline (3) through the material inlet pipe (2), the rear end of the air inlet pipeline (3) is connected with the material transmission pipeline (9), and a connecting position of the air inlet pipeline (3) and the material transmission pipeline (9) is provided with the separating device (5) which is downwards arranged. According to the novel pebble coal feeding device disclosed by the invention, a separating method is naturally completed through a gravity force, and the effect is stable; and the separating pipeline (5) is internally provided with two material discharging plates, the material discharging plates can be opened in turns during discharging, thus the influence caused by the airflow entered from the bottom part of the separating pipeline (5) to the system stability during the discharging can be prevented, and the discharging can be simultaneously completed.

Description

technical field [0001] The invention relates to a material conveying component used in a pebble coal pneumatic conveying system in a thermal power plant, in particular to a pebble coal feeding device. Background technique [0002] During the operation of coal mills widely used in thermal power plants, a large amount of pebble coal will be produced, the main components of which are gangue, pyrite, etc. discharge port. A large amount of pebble coal discharged needs to be transported away in time, otherwise it will accumulate in a large amount in the coal mill, and the accumulated pebble coal will also block the air duct, causing the coal mill to malfunction and stop. [0003] The common ways of discharge of pebble coal include artificial discharge, hydraulic discharge, and mechanical conveying discharge. At present, the amount of coal used in thermal power plants is very large, and the quality of raw coal has generally deteriorated. The amount of stones, ores and other sundr...

AI Technical Summary

Problems solved by technology

Pneumatic conveying system is a material conveying method that uses airflow as a carrier to convey bulk materials at a certain speed. Compared with other material conveying methods, pneumatic conveying has high conveying efficiency, simple equipment structure and maintenance, and is conducive to automatic conveying and environmental protection. However, due to the poor quality of the coal, there are some particles with larger particle sizes in the produced pebble coal (mainly ≥50mm pebble coal). The existence of these large particles is likely to cause blockage in the pipeline, and eventually the entire pipeline The road system was paralyzed, seriously affecting production efficiency

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