Model GK centrifuge is a type of scraper discharging filtrating centrifuge with continuous running and intermittent operation. After the drum is driven by the motor to the full speed, .the feed valve automatically turns open and the material is fed into the drum through the feed pipe. With the help of the rabble blade, the solid-phase material is evenly distributed inside the drum, and under the action of the centrifugal force, the liquid-phase material passes through the filter cloth and the filler holes on the drum and then discharged out of the machine via the liquid discharging pipe. As the thickness of the filter cake increased, the rabble blade rotates correspondingly and then it turns to a certain angle, it touches the limit switch and cuts off the time relay and thus the feed valve is shut off and the feeding stops. At the same time, the washing valve automatically turns open and the washing liquid is spayed onto the filter cake by means of the washing pipe. After the thorough washing of the cake, the washing valve is shut off and the centrifuge continues dehydrating and spin-drying. Then the scraper rotates and scrapes off the material, which is discharged out of the machine by means of gravity.