Matters needing attention in the operation of the hoist

Hoist is a large-scale mechanical equipment that is transported by changing potential energy. Elevators, cranes, hoists, stabilizers, cranes, hoists, etc. can all be called hoists. The screw elevator generally refers to the large-scale mechanical equipment with high power and strong lifting capacity, which is used to vertically lift the limestone, block and granular materials passing through the crusher, and powder materials such as raw meal, cement, and pulverized coal.

The screw elevator consists of the running part (i.e. the hopper and the traction belt), the upper section with the drive drum, the lower section with the take-up drum and the middle casing, the drive, the backstop It is suitable for upward transportation of non-abrasive and semi-abrasive bulk materials with bulk density ρ<1.5t/m3, granular and small lumps - such as coal, sand, coke powder, cement, crushed ore etc.

The screw elevator is mainly used for conveying powdery, granular and small block materials and chemicals, etc. The rotating screw blade pushes the material for conveying, so that the material does not rotate together with the screw elevator blade. The force is the material's own weight and the frictional resistance of the screw elevator casing to the material.

A screw blade is welded on the rotating shaft of the screw elevator. The surface type of the blade has solid surface type, belt type surface type, blade surface type and other types according to the different materials to be conveyed. The screw shaft of the screw elevator is in the material There is a thrust bearing at the end of the movement direction; when the spiral tube is long, an intermediate hanging bearing should be added.

The following matters need to be paid attention to in the relevant operation:

1. Before the air test of the screw elevator, all bolts should be firmed again, especially the vibration and electromagnetic anchor bolts. After 3-5 hours of continuous operation, it should be re-tightened;

2. When feeding the screw elevator, the stability of amplitude, current and noise should be checked frequently during operation, and if abnormality is found, it should be stopped in time. Treatment;

3. The bearing of the screw elevator should be filled with lubricating oil frequently;

4. The screw elevator is not suitable for conveying materials that are easily deteriorated, viscous and easy to agglomerate.