Screw centrifuge, which is a specific type of centrifuge, and is also a common and commonly used centrifuge type, so it is necessary to familiarize yourself with and understand this type of centrifuge, so that you can know what it is and how to use it properly. In order to have a good use effect, rather than the problem of wrong use.
One of the types of screw centrifuges: horizontal screw centrifuge
The horizontal screw centrifuge can be considered as one of the screw centrifuges, and is a screw discharge sedimentation centrifuge. In terms of composition, the drum has a high rotation speed, and the rotation of the drum is the same as the rotation speed. These components, such as a screw conveyor with a hollow shaft and a differential, are slightly lower. Its structural characteristics are:
(1) The involute planetary gear differential is used, which can have a larger transmission ratio and higher accuracy.
(2) There can be double overload protection device for mechanical and electrical equipment on the centrifuge to ensure the safe operation of the equipment.
(3) The power frequency speed-regulating main motor is matched with the hydraulic coupler to make the motor run smoothly. In addition, the part that is in contact with the material is made of stainless steel and has good corrosion resistance.
The working principle of the horizontal screw centrifuge is specifically: when the suspension to be separated is sent into the drum by the hollow shaft, it is broken into the drum cavity by the centrifugal force. The powerful centrifugal force generated by the rotating drum at high speed applies the denser solid particles in the suspension to the inner wall of the drum and forms a solid layer, and the water forms a liquid layer inside the solid layer. Then, using the difference in rotation speed of the two and the relative movement of the screw and the drum, the sludge of the solid layer is slowly pushed to the end of the drum cone, and after being discharged through the drying zone, the liquid in the liquid layer is discharged to the drum by gravity. A separation liquid is formed.
The second type of screw centrifuge: spiral discharge centrifuge
A spiral discharge centrifuge, which is also a specific type of screw centrifuge, has components such as a drum and a differential on the constituent parts. The function of the differential is to create a certain difference in rotational speed between the drum and the screw, so that the centrifuge can start working normally. In application, it can be used for solid-liquid separation in industries such as chemical, pharmaceutical, food, metallurgy and mining. The solid phase in the suspension can be 10%-80% solid phase or the particle diameter is 0.05-5mm. Linear or crystalline solid particles in this range are separated and the machine can be designed in accordance with GMP specifications.www.bscentrifuges.com