The material in the transfer process, fall chute feeding belt conveyor chute, such as the gap between induced air flow, dust induced material generated along the chute, chute in the interspace of overflow, scattering.

Dust settling point of bridge type grab ship unloader:

Dust: a bridge type ship unloader operation, coal bucket to fall from the hopper, the material caused by the falling of surrounding air disturbance, the disturbance of air flow in the movement, will lead to small particles in dust, coal dust generated; potential energy release material into the bin, and, after a rebound after the continued fall into material collision in the discharging point, a lot of dust in the bunker; increasing the material replacement positions within the air, causing air recoil, will drive into small particles silo to recoil, increased dust bin. The coal dust flying point caused by the fall into the silo is the main pollution source of the scene.

Point two: dust bin vibrating machine to the belt machine three chute transportation of materials, materials for mutual collision, and the material chute friction and impact will also produce a lot of dust, the vibration to the machine to the chute blanking, dust from interface scattering, overflow.

Dust point three: three blanking chute into the material guiding groove belt machine, because of the material in the chute into the belt guide chute, chute material and material potential energy release, the material and the material, material, and the material guide groove wall between the frequent occurrence of collision and friction, will produce a lot of dust in the guide groove, the sealing under poor conditions, the dust will extend the guide groove and belt machine interface scattering, overflow.

Dust emission point of ship loader:

A dust tail car upper feed: loading belt conveyor belt head chute, material transport belt material to leave the initial speed of 3m/s - 5m/s downward movement of air flow generated negative pressure area is formed in the process of movement, small particles raised dust under the action of airflow, when the material feeding pipe to contact collision the material overflowing dust, collision materials fall to generate strong airflow in the feed pipe, small granular materials have raised dust in the air under the action of.

Dust two: material cantilever belt conveyor, the material by the inclined chute falls on the cantilever belt, the material flow in the process of movement, negative pressure zone is formed in the inclined chute, small particles produced raised dust in the air under the action of dust in the air of the material movement spread to the cantilever belt the feeding point in. When the material falls on the cantilever belt, it will collide with the belt to produce a strong air flow, and the small particles will produce dust under the action of the airflow.

Dust point three: cantilever belt conveyor belt head chute, material transport belt material to leave the initial speed of 3m/s - 5m/s downward movement of air flow generated negative pressure area is formed in the process of movement, small particles raised dust under the action of airflow, when exposed to material feeding pipe collision material overflowing dust. The material falls to generate strong airflow during the collision in the feed pipe, small granular materials have raised dust in the air under the action of.

Point four: dust loading chutes, the material from the feeding pipe outflow into free fall, resulting in material flow negative pressure zone is formed in the process of free fall, small particles under the action of airflow raised dust, dust in the wind under the effect of the increase amount.