What is a screw conveyor?

A screw conveyor or screw loading conveyor is a mechanism that uses a rotating screw screw called 'flyingThey are used in many bulk handling industries. Screw conveyors in modern industry are usually used horizontally or slightly inclined. They are an effective way to move semi-solid materials, including food waste, wood pellets/grain/animal feed/boiler ash/meat and bone meal/municipal solid waste, etc. .　　　　 The first type of screw conveyor is the Archimedes screw, which has been used for pumping irrigation water since ancient times.　　　　 They are usually composed of a groove or tube, containing a spiral blade coiled around a shaft, one end is driven, the other end is fixed, called a solid shaft screw.　　　　 Other types are open spiral or shaftless screws driven at one end and free at the other end. The speed of volume transfer is proportional to the rotational speed of the shaft.　　　　In industrial control applications, the equipment is usually used as a variable rate feeder by changing the rotation speed of the shaft to deliver the measured amount of material or a certain amount of material to the process.　　　　 If space permits, the use of inclined screw conveyor is a very economical method of lifting and conveying materials. As the tilt angle increases, the capacity of a given unit will rapidly decrease.　　　　 The general rule of thumb is 45 degrees or less, otherwise the material will eventually fall backwards during the flight and will not be delivered to the intended destination.

Nowadays, the adoption of flexible conveyor system in container loading machine industry is quite common.

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