... 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 alarm ... device, shaft-free screw vane, U-shaped changeable abrasion-resistant scaleboard and frame. It is mainly used for transporting ...