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The work of horizontal screw centrifuge and its construction principle

Jul 03, 2019

Concentration of horizontal screw centrifuge

 

When the screw pushes the shaft to rotate, the multiple solid laminations disposed on the periphery of the push shaft move relatively, and under the action of gravity, water is filtered out from the relatively moving lamination gap to achieve rapid concentration.

 

Dehydration of horizontal screw centrifuge

 

The concentrated sludge moves forward with the rotation of the screw shaft; along the exit direction of the mud cake, the pitch of the screw shaft gradually becomes smaller, the gap between the ring and the ring gradually becomes smaller, and the volume of the spiral cavity shrinks continuously; Under the action of the back pressure plate at the outlet, the internal pressure is gradually enhanced. Under the continuous driving of the spiral push shaft, the water in the sludge is squeezed out, and the solid content of the filter cake is continuously increased to achieve continuous dewatering of the sludge.

 

Self-cleaning of dewatering of stacked snail sludge

 

The rotation of the screw shaft pushes the swimming ring to rotate continuously, and the device relies on the movement between the fixed ring and the swimming ring to realize a continuous self-cleaning process, thereby cleverly avoiding the clogging problem that is common in the conventional dehydrator.

 

The main body of the stacked snail sludge dewatering snail is a filter device formed by a fixed ring and a swimming ring, and a spiral shaft is formed therethrough. The front part is a concentrated part, and the rear part is a dewatering part.

 

The filter slit formed between the fixed ring and the swimming ring and the pitch of the screw shaft gradually become smaller from the concentrating portion to the dehydrating portion.

 

The rotation of the screw shaft pushes the sludge from the enrichment section to the dewatering section, and also continuously drives the swimming ring to clean the filter joint to prevent clogging.

 

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