What is the Working Principle of Screw Press?
Screw Press also known as the spiral stacking sludge dewatering machine, is an efficient solid-liquid separation equipment. The following is a detailed introduction to its working principle.
1. Concentration process.
When the spiral driving shaft rotates, the multiple solid and active laminations arranged on the periphery of the driving shaft move relatively. Under the action of gravity, water is filtered out from the gaps between the relatively moving laminations to achieve rapid concentration.
2. Dehydration process.
The concentrated sludge moves forward continuously with the rotation of the spiral shaft. Along the direction of the mud cake outlet, the pitch of the spiral shaft gradually decreases, the gap between the rings also gradually decreases, and the volume of the spiral cavity continues to shrink. Under the action of the back pressure plate at the outlet, the internal pressure gradually increases. Under the continuous operation of the spiral driving shaft, the water in the sludge is squeezed out, the solid content of the filter cake continues to increase, and finally the continuous dehydration of the sludge is achieved.
3. Self-cleaning process.
The spiral driving ring of the spiral shaft rotates continuously, and the equipment relies on the movement between the fixed ring and the floating ring to achieve a continuous self-cleaning process, thereby cleverly avoiding the blockage problem commonly found in traditional dehydrators.
Screw press is widely used in sludge treatment in municipal sewage, food, beverage, chemical, pharmaceutical and other industries, and is suitable for dewatering high and low concentration sludge. When dewatering low concentration sludge, there is no need to build a concentration tank or storage tank, which reduces construction costs.
With its unique working principle, reasonable structural design and many advantages, Screw press plays an important role in sludge treatment in many industries, providing strong support for environmental protection and resource utilization.
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Nina
Email: nina@filtrationchina.com
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