Dehydration principle and structure principle of screw stacking machine
- 2018-11-05-

Dehydration principle

1. Concentration: When the screw pushing shaft rotates, the multiple solid and living laminations arranged on the periphery of the pushing shaft move relatively. Under the action of gravity, water is filtered out from the gap of the relatively moving laminations to achieve rapid concentration.

2. Dehydration: The concentrated sludge moves forward with the rotation of the screw shaft; along the direction of the mud cake outlet, the pitch of the screw shaft gradually decreases, and the gap between the rings gradually decreases, and the volume of the spiral cavity Continuously shrinking; under the action of the back pressure plate at the outlet, the internal pressure gradually increases. Under the continuous continuous operation of the screw drive shaft, the water in the sludge is squeezed and discharged, and the solid content of the filter cake continues to increase to realize the sludge Continuous dehydration.

3. Self-cleaning: The rotation of the screw shaft pushes the moving ring to continuously rotate. The equipment relies on the movement between the fixed ring and the moving ring to achieve a continuous self-cleaning process, thereby cleverly avoiding the common blocking problem of traditional dehydrators.

CurrentlyScrew stacking machineConstruction principle

① The main body of the dewatering machine is a filtering device formed by stacking a fixed ring and a moving ring, and the screw shaft penetrates through it. The front section is the concentration section, and the rear section is the dehydration section.

②The filter gap formed between the fixed ring and the moving ring and the pitch of the screw shaft gradually decrease from the concentration part to the dehydration part.

③While the rotation of the screw shaft pushes the sludge from the thickening section to the dewatering section, it also continuously drives the traveling ring to clean the filter gap to prevent clogging.

70-80% of rivers and lakes in my country are polluted to varying degrees. The severely polluted water has caused unsafe drinking water for more than 300 million people. Among them, nearly 200 million people drink water with harmful substances in excess of the standard. The source of pollution is controlled from flowing into the river. , Rivers, lakes, streams, and effective treatment and treatment of all kinds of sewage is an extremely important task in my country's environmental protection projects.


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