Screw conveyor

Introduction of Screw conveyor
The screw conveyor is a kind of machinery that uses the motor to drive the screw to rotate and push the material to achieve the purpose of conveying. It can be transported horizontally, obliquely or vertically. It can be divided into two types of conveying form: axial screw conveyor and shaftless screw conveyor, and it can be divided into U-shaped screw conveyor and tubular screw conveyor. The axial screw conveyor is suitable for cohesionless dry powder materials and small particle materials (For example: cement, fly ash, lime, grain, etc.) and the shaftless screw conveyor is suitable for conveying sticky and easy-winding materials. (e.g. sludge, biomass, garbage, etc.).

Structure of screw conveyor
The screw conveyor is mainly composed of drive device, shell, cover plate, screw shaft, screw blade, feed inlet, discharge outlet and other structures.
Features of screw conveyor
1. The structure is relatively simple, the cost is low, the work is reliable, and the maintenance and management is simple.
2. Compact size, small section size and small floor area.
3. It can realize sealed transportation, which is conducive to the transportation of materials that are easy to fly, hot and smelly, and can reduce the pollution to the environment.
4. It can be transported in reverse direction, and can also make a conveyor transport materials in two directions at the same time, that is, to the center or away from the center.

When the screw shaft rotates, due to the gravity of the material and the friction between the material and the tank wall, the material can only move forward along the bottom of the conveyor trough under the push of the blade, which is like the translational movement of the non-rotating nut along the rotating screw. The main forward power of the material comes from the force that the material moves up and forward along the tangent direction of the blade when the spiral blade rotates axially.