The working principle of the horizontal spiral sedimentation centrifuge is that the muddy water mixture enters the rotating drum through the feeding pipe and the discharging port. Under the centrifugal force generated by the high-speed rotation of the main machine, the solid particles with a large specific gravity are deposited on the inner wall of the drum, and the spiral blades that move relative to the drum continuously scrape the solid particles deposited on the inner wall of the drum and push out the row. The slag mouth, the separated supernatant flows out of the drum through the opening of the raft.
According to the material properties of the suspension, the requirements of the liquid phase and solid phase after separation, and the processing capacity, etc., the user can reasonably select the relevant parameters of the centrifuge, such as: the processing amount Q, the drum rotation speed n, the difference between the drum and the spiral The rotational speed Δn, the diameter of the overflow plate D, etc., to obtain a satisfactory separation effect.
As the drum speed increases, the separation factor rises and the separation effect increases (after the differential pulley is determined), the differential speed between the screw and the drum increases, and the processing capacity increases, but the vibration of the centrifuge, The noise will also increase, and the service life will decrease. Generally, it is very important to select the appropriate speed under the premise of meeting the separation requirements. Therefore, the rotating speed of the machine is up to 3200r/min, and the working speed is recommended to be 2000. In the range of ~3000r/min.
The determination of the differential speed is generally determined according to the solid content of the material. If the solid content is large, the differential speed should be selected. If the solid content is small, the smaller differential speed can be selected. The final determination of the initial differential speed is based on The test is determined by factors such as separation requirements and processing capabilities. The initial differential speed adjustment can be realized by adjusting the frequency of the hydraulic inverter in the running state, and the initial differential speed is generally in the range of 5 to 15 r/min.