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Stone coal negative-pressure conveying system

A conveying system, pebble coal technology, applied in the direction of conveyors, conveying bulk materials, transportation and packaging, etc., can solve the problems of conveying pipeline damage, easy sticking, reducing equipment reliability, etc., and achieve the effect of reducing pipeline wear

Inactive Publication Date: 2010-06-23
JIANGSU ZHONGNENG POWER EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the characteristics of the negative pressure conveying method itself, most of the existing pebble coal negative pressure conveying systems have defects such as unstable material flow, easy jamming, and serious material damage to the conveying pipeline, which reduces the reliability of equipment operation

Method used

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  • Stone coal negative-pressure conveying system
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Embodiment Construction

[0015] The symbols in the drawings include: 1-stone coal hopper; 2-suction nozzle; 3-branch pipe; 4-pressure transmitter; 5-switching valve; 10-air locker; 11-dust collector; 13-coal collection bin for gravel; 16-fan; 18-standby fan; 19-PLC control system; 20-feed valve; 21-spray device; 22-inlet Air valve; 23-temperature measuring device.

[0016] Embodiments of the present invention are as follows:

[0017] Such as figure 1 As shown, the pebble coal negative pressure pneumatic conveying system is provided with five pebble coal hoppers 1, and the upper part of these pebble coal hoppers 1 is equipped with a feed valve 20, a spray device 21, an air inlet valve 22 and a temperature measuring device 23, and through the switching valve 5. The branch pipe 3 is connected to the confluence bin 6; the confluence bin 6 is connected to the upper part of the cyclone separator 9 through the negative pressure main pipe 8; It is connected with the gravel coal collection bin 13; the upper...

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Abstract

The present invention relates to a stone coal negative-pressure conveying system in a power plant coal-fired sorting and conveying system. The stone coal negative-pressure conveying system comprises a negative-pressure main pipe, wherein an inlet at the front end of the negative-pressure main pipe is connected with outlets of a plurality of stone coal hoppers through a plurality of branched pipes; the tail end of the negative-pressure main pipe orderly passing through a cyclone separating device and a dust remover is connected with a blower; and separating material outlets of the cyclone separating device and the dust remover are connected with a stone coal collecting bin. The present invention is characterized in that a suction nozzle with a check valve is arranged at the connection part of the outlets of the stone coal hoppers and the inlets of the branched pipes, and meanwhile each branched pipe passing through a junction bin is connected with the negative-pressure main pipe. The present invention can improve the reliability of material conveying, and reduce the abrasion of conveying pipes.

Description

technical field [0001] The invention relates to a negative-pressure conveying system for pebble coal used in coal-fired separation and conveying systems of power plants. Background technique [0002] Pebble coal is the primary mineral in coal that is difficult to be pulverized, such as pyrite, quartz sand, rock and foreign foreign matter such as iron and stone, which are discharged from coal-fired power plants in the process of medium-speed milling. Entrainment of certain coal particles. Pebble coal is characterized by high sulfur content, large ash content, and low calorific value. It is a kind of waste. At present, most of the treatment methods for pebble coal in major power plants are discarding and landfilling. Pebble coal needs to be discharged in time, otherwise it will affect the normal operation of the coal mill. If the pebble coal is not discharged in time, the pebble coal will accumulate in the coal mill, and the pebble coal scraper will stir the pebble coal, cau...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C23/00B02C23/08B04C9/00B65G53/24
Inventor 晋中华丁为平王月明陈太文
Owner JIANGSU ZHONGNENG POWER EQUIP
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