... feed pump, polymer feed pump, shaft-free screw conveyor, flow meters, control valves and full automatic control system, etc. It ... crushing & cutting machine, sludge feed pump, polymer feed pump, flow meters, etc. And conduct detection, fault alarm, interlocking protection, etc. ... of 0.2~5% concentration sludge and polymer. Flow rate is controlled by inverter.Auxillary Equipment 5---Shaft-free ...