The screw press machine, whose full name is the screw type sludge dewatering machine, is a kind of equipment commonly used for sludge dewatering treatment, and it has the following characteristics:

1. Unique Structure: It is mainly composed of fixed rings, movable rings, a screw shaft, a driving device, etc. The fixed rings and movable rings are stacked alternately, and the screw shaft runs through them. Through the rotation of the screw shaft, the sludge is pushed to move in the gaps between the rings, achieving the dewatering of the sludge.

2. Scientific Working Principle: The sludge enters from the feed inlet. With the rotation of the screw shaft, under the action of gravity, the free water is discharged from the filter slits first. Subsequently, the sludge continues to move forward. The pitch of the screw shaft gradually becomes smaller, and the space gradually narrows, exerting pressure on the sludge to further remove the water in the sludge. Finally, the sludge cake is discharged.

3. Wide Application Range: It has good adaptability to the sludge generated in different industries, such as municipal sewage sludge, food processing sludge, printing and dyeing sludge, pharmaceutical sludge, etc. Especially for oily sludge and sludge with high viscosity, it can also effectively carry out dewatering treatment.

4. Not Easy to Block: Due to its unique structure, the movable rings can continuously rotate driven by the screw shaft, playing a certain self-cleaning role for the filter slits, greatly reducing the possibility of the sludge blocking the filter slits and reducing the difficulty and frequency of equipment maintenance.

5. Small Floor Area: The equipment has a compact structure. Compared with traditional sludge dewatering equipment, such as belt filter presses and plate and frame filter presses, the screw press machine occupies much less space, which can save space and is suitable for sewage treatment plants or enterprises with limited space.

6. High Degree of Automation: It can achieve continuous and automatic operation. By adjusting parameters such as the rotation speed of the screw shaft and the sludge feed rate, the dewatering effect can be flexibly controlled, and during the operation process, it has low noise and low energy consumption.