The pneumatic form, automatic movement with pneumatic system components, sanitation and hygiene. Effectively avoid the leakage of oil pollution on the materials to meet the pharmaceutical and fine chemicals in food and cleanliness requirements. The key equipment for sludge thickening and dewatering is the main unit of sludge dewatering, namely the horizontal decanter centrifuge (the decanter centrifuge for short), which is the equipment for suspension separation by the use of centrifugal sedimentation principle.