The basic function of a horizontal screw centrifuge is to continuously separate the materials input into the machine, which requires the machine to discharge the materials that have been separated inside it so that the machine can continue to process new materials entering it.
In the operation of the horizontal screw centrifuge, especially in the operation of handling material separation, the operation of the spiral inside the centrifuge can be said to be the “soul” of the operation of the horizontal screw centrifuge. Without the correct operation of the spiral, the centrifuge cannot achieve its basic functions. When talking about the feeding system, everyone naturally thinks of the feeding pump and the dosing pump. But the key equipment is that the various outlets of the horizontal screw centrifuge must be “opened”. The outlet of the centrifuge refers to the slag discharge system below the solid slag discharge port and the outlet pipeline of the clear liquid after separation, and the corresponding valves on the outlet pipeline. If the centrifuge outlet is blocked, the discharged materials will quickly spread or clog the centrifuge’s drum system, they will produce strong friction with the high-speed running drum, which will cause the centrifuge to vibrate strongly and make noise until it stops due to overload, and serious solid slag blockage may occur inside the centrifuge.
If the outlet of the horizontal screw centrifuge is frequently blocked or the material spreads and rises, the solid residue will gradually accumulate in the centrifuge cover and the gap between the cover and the drum body, causing serious wear and grooves on the drum body, which will cause unsafe factors. Therefore, before starting the feed pump, you must first start the slag discharge system and open the liquid outlet pipeline. We have adopted logical protection in the control system, but in some cases, customers may have special requirements and ignore logical protection. As an operator, you should be very clear about this logical sequence and strictly implement it.
The feed of the horizontal screw centrifuge needs to start with a small flow rate. While adding flocculants, we must pay close attention to the discharged clear liquid and wait for the solid residue to accumulate inside the centrifuge until it is discharged. The color of the discharged liquid must be clear. If it is very turbid, it is a precursor to blockage. If the clear liquid is discharged from the liquid port and the solid residue is discharged from the solid residue port (it may be very wet), it means that the material in and out of the centrifuge is unobstructed, and further parameter adjustments can be made.