Screw conveyors can be divided into two types: shaft screw conveyors and shaftless screw conveyors. Their working principle is that when the material enters the fixed machine trough, due to the gravity of the material and the friction between the material and the machine trough, the material accumulated at the bottom of the machine trough continues to rotate with the screw body and moves forward under the push of the rotating spiral blades.
Its use characteristics are: convenient for multi-point loading and unloading, and can also complete the functions of stirring and mixing during the transportation process; it is sensitive to overload, easy to block, and consumes a lot of energy; it has a crushing phenomenon for coarse-grained materials and is suitable for conveying fine-grained coal. Its structural characteristics are: simple structure, easy maintenance, reliable operation; small cross-sectional coefficient, compact and flexible layout; closed transportation, less environmental pollution, can improve working conditions; serious wear of machine parts and low conveying capacity.
Screw conveyors can be roughly divided into: LS screw conveyors, GX screw conveyors, WLS shaftless screw conveyors, DL multi-shaft screw conveyors, LC vertical screw conveyors. Among them, the most widely used are LS screw conveyors and GX screw conveyors.
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