How does a briquetting
press work?
The waste materials are fed into the metering screw by a conveyor unit. This conveys the material into the supercharger. The supercharger presses the material into the pre-compression bushing and stops there. The main press cylinder extends and compresses the material into a solid briquette under high pressure in the press bushing. The main press cylinder relieves and stops. The counter piston moves down and releases the ejection channel. At the same time, the supercharger is started up again. The main press cylinder ejects the briquette and pushes it into the ejection channel. The main press cylinder retracts. The dosing screw fills the supercharger again. The position of the pressing plunger is detected by the displacement encoder, the position of the supercharger and the counter plunger by limit switches. The releases for retracting and extending the cylinders are given according to the cylinder positions. The distance measuring system is also used to set the briquette length. If, for example, the briquette is shorter than specified, more chips are fed in by the metering screw during the next pressing operation. Thus, the filling quantity in the supercharger is constantly regulated and the briquette length is adjusted.