... device, sludge crushing & cutting machine, sludge feed pump, polymer feed pump, shaft-free screw conveyor, flow meters, control valves ... device, sludge crushing & cutting machine, sludge feed pump, polymer feed pump, flow meters, etc. And conduct detection, fault ... life blade.Auxillary Equipment 4---Sludge feed pumpThis pump is a positive displacement pump, the rotor with large transmission distance, ...