Overview Screw conveyor is a kind of equipment that is widely used in the national economy. It is the main unit of mechanized and automated transportation in various industrial sectors. Its structure and layout scheme are diverse. This instruction manual is to help use...
U-shaped screw conveyorOverview
Screw conveyor is a kind of equipment that is widely used in the national economy. It is the main unit for mechanized and automated transportation in various industrial sectors. Its structure and layout scheme are diverse.
This manual is compiled to help the user to have a general understanding of the current screw conveyor. This manual points out possible problems and precautions in lubrication, installation, operation, maintenance, etc., so as to attract attention during use, extend the service life of the equipment, and ensure attendance and work reliability.
Features of U-shaped screw conveyor
U-shaped screw conveyor is a continuous conveying equipment without flexible traction. It uses a rotating screw to push the conveyed material along a fixed casing for conveying work. The situation seems to be held and cannot be rotated. The nut moves in translation along the screw, and the force that prevents the material from rotating with the screw is the gravity of the material and the friction force against the casing.
The advantages of the U-shaped screw conveyor are: simple structure and convenient maintenance; the cross-sectional dimensions are not large; materials can be fed in and out at any position in the length direction; the cover of the closed casing can be used to achieve a better sealing effect.
Therefore, U-shaped screw conveyors are widely used in various industrial sectors to transport a variety of powder, granular and small materials such as coal ash, cement, sand, lump coal, cereals, etc. It is not easy to transport the agglomerated materials with high viscosity that are perishable.
The specifications, model, screw diameter, speed and conveying capacity of U-shaped screw conveyor are shown in the following table:
For each diameter screw conveyor, its power varies in a large range depending on the conveying volume, conveying material, conveying length, conveying height and other factors. The specific values are shown in the general equipment diagram.
The overall dimensions and weight of the U-shaped screw conveyor are also different due to factors such as conveying length, screw diameter, manufacturing method, etc., so it is inconvenient to list them one by one. Please refer to the equipment general drawing for specific values.
U-shaped screw conveyor is divided into single-end drive and double-end drive according to the driving mode.
The structure of U-shaped screw conveyor is composed of: driving device, coupling, screw shaft, trough, hanging bearing device, bearing device at both ends, support, cover, inlet and outlet, etc.
The transmission system of the U-shaped screw conveyor is based on the electric motor as the driving force, which is decelerated by the gear reducer, and then transmits the power to the screw shaft through the chain drive.