When the decanter centrifuge is in operation, its high-speed rotating drum will generate a strong centrifugal force, and the solid phase particles with higher density than the liquid phase will stick to the inner wall of the drum to form a solid layer (because of the ring shape, called solid state). Ring layer); moisture can only form a liquid layer inside the solid ring layer because of its low density and low centrifugal force, which is called the liquid ring layer.
Because the rotation speed of the screw and the drum is different, there is a relative motion (ie, the difference in rotation speed) between the two, and the relative motion of the screw and the drum is used to slowly push the sludge in the solid ring layer to the cone end of the drum and pass through the drying area. Afterwards, it is discharged one after another from the outlets distributed around the drum, and the liquid in the liquid ring layer is discharged to the outside of the drum by the gravity from the weir opening to form a separation liquid.
Because the decanter centrifuge system is a blast furnace gas washing water sludge treatment system, the recovered water quality changes greatly, the sludge particles are seriously worn on the equipment, and there are many uncertain factors affecting the outside world. In addition, the treatment equipment of the horizontal centrifuge system There are many varieties and processing links are intertwined, and the requirements for operation operators are relatively high. Therefore, to ensure the normal operation of each link and give full play to the effect of each facility and equipment, it is necessary to strengthen the daily operation management and have a set of management measures to ensure it.
The screw decanter centrifuge uses the principle of centrifugal sedimentation to separate the drilling suspension, and pushes it to the slag discharge port at the small end of the drum through the blades on the screw pusher, and the liquid phase overflows through the overflow hole at the large end of the drum. Such a continuous cycle, in order to achieve the purpose of successive separation.
(1) The involute planetary gear differential is selected, with large transmission ratio and high precision.
(2) The whole machine is equipped with two layers of mechanical and electrical overload protection devices, which are safe to use.
(3) The main motor of power frequency speed regulation is equipped with a hydraulic coupler, and the motor runs smoothly.
(4) The parts in contact with the material are made of high-quality stainless steel, which has strong corrosion resistance.
(5) The whole machine adopts the overall frame structure, which is safe and convenient to hoist and occupies less floor space.
(6) The explosion-proof grade of power frequency and variable frequency electrical appliances, and the sealing performance of the control box is good.