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A schematic diagram of a Horizontal Decanter Centrifuge. In conveyor decanter centrifuges the conveyor or scroll fits inside a rotating bowl and carries the solids settled against the wall, pushing them across a beach towards the underflow where the solids discharge. The conveyor allows for an increase in separation efficiency and feed capacity.
The first type of screw conveyor was the Archimedes' screw, used since ancient times to pump irrigation water. [ 1 ] They usually consist of a trough or tube containing either a spiral blade coiled around a shaft, driven at one end and held at the other, or a " shaftless spiral ", driven at one end and free at the other.
The most commonly known screw press of this design is said to have been invented by famous Greek mathematician Archimedes and is known as the screw conveyor. The screw conveyor consists of a shaft, which is surrounded by a spiral steel plate, similar in design and appearance to a corkscrew. This design is used in a multitude of screw presses.
A screw conveyor uses a rotating helical screw blade to move bulk materials. Because of its self-locking property (see below) the screw is widely used in threaded fasteners to hold objects or materials together: the wood screw, sheet metal screw, stud, and bolt and nut.
The helical screw pushes the solid material to be discharged to the forward end of the scroll. The processing time depends on helical screw pitch and the angular velocity difference. It may also be influenced by the design of the scroll feed opening. The solid particles exiting are usually collected via a conveyor in the collection unit. [6]
Solid Bowl Centrifuge. A solid bowl centrifuge is a type of centrifuge that uses the principle of sedimentation.A centrifuge is used to separate a mixture that consists of two substances with different densities by using the centrifugal force resulting from continuous rotation.
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