Structural features of screw conveyor
(1) There are three types of spiral blades for screw conveyors: solid spiral surface type, belt spiral surface type and blade spiral surface type. The solid spiral surface is called the S method, and its spiral pitch GX type is 0.8 times the blade diameter. The LS type screw conveyor is suitable for conveying powdered and granular materials. The belt spiral surface is also called the D method. Its spiral pitch is the same as the spiral blade diameter. It is suitable for conveying powdered and small pieces of materials. The blade spiral surface is less used and is mainly used to convey materials with high viscosity and compressibility. During the conveying process, stirring and mixing processes are completed at the same time. Its spiral pitch is about 1.2 times the diameter of the spiral blade.
(2) The spiral blades of the screw conveyor have two rotation directions: left-handed and right-handed.
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