The elastic stator of the small screw deep well pump with a special helical surface cavity meshes with the rotor with a large lead and a large tooth height. A continuous sealing line is formed in the stator row cavity to separate the suction cavity and the extrusion cavity, and the cavity is continuous when the rotor rotates. The ground moves in the discharge direction, so that the material is continuously sucked and discharged.

1. The small screw deep well pump vibrates violently: it may be that the electric rotor is unbalanced, or the coupling is poorly combined, and the bearing is worn and bent; it may also be that some rotating parts are loose or broken; perhaps the pipeline support is not strong, etc. Adjustment, repair, reinforcement, replacement and other methods can be adopted respectively.
2. Water leakage or air leakage in the pipeline: the nut may not be tightened tightly during installation. If the leakage is not serious, cement or cement slurry mixed with asphalt oil can be applied to the place where there is air leakage or water leakage. Temporary repairs can be done with some damp mud or soft soap. If water leaks at the joint, the nut can be hand-tightened. Serious leaks must be disassembled.