Transfer of second-hand 450 type horizontal screw centrifugeThe horizontal spiral centrifuge is mainly composed of a rotary drum, a screw, a differential system, a liquid level baffle, a drive system, and a control system. A decanter centrifuge utilizes the density difference between solid and liquid phases to accelerate the settling velocity of solid particles under the effect of centrifugal force, thereby achieving solid-liquid separation.

The detailed separation process is that the sludge and flocculant solution are sent into the mixing chamber of the drum through the inlet pipeline, where they are mixed and flocculated (if they are added before the sludge pump or through the pipeline after the pump, the flocculation reaction is already advanced). Due to the high-speed rotation and frictional resistance of the rotor (spiral and drum), the sludge is accelerated inside the rotor and forms a cylindrical liquid ring layer (liquid ring area). Under the effect of centrifugal force, solid particles with high specific gravity settle on the inner wall of the drum to form a mud layer (solid ring layer). Then, the relative velocity difference between the spiral and drum is used to push the solid phase towards the cone end of the drum. After pushing out the liquid surface (shore area or drying area), the sludge is dehydrated and dried, pushed towards the slag discharge outlet, and the supernatant is discharged from the large end of the drum, achieving solid-liquid separation. Leave.

The working principle of a centrifuge is that the drum and the screw rotate at a certain differential speed and high speed in the same direction. The material is continuously introduced into the inner cylinder of the conveying screw through the feeding pipe, and after acceleration, it enters the drum. Under the effect of centrifugal force field, heavier solid substances accumulate on the drum wall to form a sediment layer. The feeding screw continuously pushes the accumulated solid matter to the cone end of the drum and discharges it outside the machine through the slag discharge outlet. The lighter liquid phase constitutes the inner liquid ring, which continuously overflows from the large end overflow port of the drum and is discharged outside the machine through the discharge port. This machine can continuously feed, separate, wash, and discharge materials at full speed. It has the characteristics of compact structure, continuous operation, smooth operation, strong adaptability, high production capacity, and convenient maintenance. Suitable for separating suspensions containing solid particles with a particle size greater than 0.005mm and a concentration range of 2-40%.