The main body of the horizontal screw centrifuge consists of three parts: the drum part, the screw part and the drive equipment. The difference in speed between the drum and the screw is adjusted through a gearbox.

Working principle

(1) The distiller's grains liquid enters the intersection of the cone and cylinder of the drum (material distribution bin) through the feed pipe passing through the hollow part of the screw conveyor.

(2) After the distiller's grains liquid enters the drum, the liquid in it spreads within the drum to form an inner water ring and steadily accelerates to the full speed.

(3) Under the effect of centrifugal force, the solid phase settles on the inner wall of the drum. The screw conveyor continuously conveys the solid phase from the cylindrical part of the drum through the conical part to the discharge port.

(4) The separation of solid and liquid phases occurs in the entire cylindrical part of the drum. At the large end of the drum, there is a weir plate (adjustable and replaceable), and the clear liquid phase overflows from the large end of the drum through the weir plate and is collected.

Compared with the over 100-year development history of foreign horizontal screw centrifuges, the development of domestic centrifuges has only been a few decades. In the corn distiller's grains separation industry, domestic horizontal screw centrifuges have now occupied the vast majority of the market. Some domestic equipment has reached the level of similar foreign products in key technical performance indicators such as stable operation, production efficiency, solid matter recovery, and processing capacity. Some manufacturers' equipment, due to its relatively high cost performance, has been exported to developed markets in Europe and America. However, when it comes to the overall level of domestic centrifuges, there is still a certain gap compared with foreign ones. Especially in terms of the overall design level and capacity, the breakthrough and development of new technologies, the large-scale equipment, and the control ability of installation accuracy, these remain the bottlenecks restricting the refinement, stability and high efficiency of professional equipment.