Single screw pump with a special helical surface of the elastic cavity of the stator with a large gear large tooth meshing in the stator row of the chamber to form a continuous seal line between the suction chamber and the pressure chamber separated by the rotor rotation of the cavity continuously Movement to the discharge direction, so that materials are constantly being sucked and discharged. 1. Single screw pump violent vibration: the rotor may be unbalanced, or coupling poor coupling, bearing wear and tear may also be rotating parts loose, rupture; may be due to the pipe stent is not strong and so on. Can be taken to adjust, repair, reinforcement, replacement and other methods to deal with. 2. Piping leaks or leaks: screw may not be tight when installing. If the leakage is not serious, in the place of leakage or leakage coated with cement or asphalt mixing oil slurry. Temporary repair can be painted wet mud or soft soap. If leakage occurs at the connector, tighten the nut by hand. Leak serious must re-disassembly. 3. Packing overheating: Because the packing is too tight, the cooling water can not enter the packing, or the shaft surface is damaged. Proper relaxation of packing can be taken to clear up the sealing tube blockage and other measures. Filler wear must be replaced by new ones. Soak it in the oil before installation, insert it in turn, and cut it off, which will reduce water leakage. After the last lap packing is installed, the gland should be installed tightly and the tightness should be adjusted during operation.