Construction and Working Principle of Screw Sludge Dewatering

 

Construction and Working Principle of Screw Sludge Dewatering

The structure of the screw lapping machine includes: screw lapping body, spiral shaft, driving device, filtrate tank and other devices and equipment; The working principle of the screw folding machine is divided into three parts: the concentration part, the dehydration part, and the self-cleaning part. Next, we will introduce it to you.

The main body of the screw slide press is overlapped by a fixed ring and a movable ring, and the spiral shaft runs through it, integrating concentration and dehydration. The front section is the concentration section, and the rear section is the dehydration section.

1) Concentration: When the spiral shaft rotates, a plurality of fixed and movable laminations around the spiral shaft move relative. Under the action of gravity, sewage is filtered out from the relatively moving lamination gap to achieve rapid concentration.

2) Dewatering: the concentrated sludge moves forward with the rotation of the spiral shaft; Along the outlet direction of mud cake, the pitch of spiral shaft decreases gradually, the gap between rings also decreases gradually, and the volume of spiral cavity decreases continuously; Under the action of the outlet back pressure plate, the internal pressure gradually increases. Driven by the continuous operation of the spiral drive shaft in turn, the water in the sludge is squeezed out, and the solid content of the filter cake increases continuously, finally realizing the continuous dehydration of the sludge.

3) Self cleaning: The rotation of the spiral shaft promotes the continuous rotation of the traveling ring. The equipment realizes continuous self-cleaning process by relying on the movement between the fixed ring and the moving ring, ingeniously avoiding the common blockage problem of the traditional dehydrator.

 

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