Vertical pump for mine

Abstract

The invention is a mine vertical pump being as a light sand-discharging submersible pump in which are assembled a lower bearing, a mechanical sealed outer oil chamber outside the barrel, oil-passing hole in communication with the mechanical seal inside the barrel. The openings of the overflow pipe and the long sleeve are both disposed in the middle of the three-dimensional space in the outer cavity.

Description

technical field [0001] The present invention relates to a mine vertical pump - a light submersible sand discharge pump, which is an amphibious water pump for both land and underwater use, and is also suitable for transporting impurity submersible pumps or sand discharge submersible pumps containing solid abrasive particles in the liquid . Background technique [0002] The motor of the submersible pump needs to be highly sealed. When discharging impurities, especially sand, its motor shaft hole seal is easily damaged. In the existing old-fashioned submersible pump, once the shaft hole seal leaks inward, the grease of the lower bearing will be washed away. Once the bearing is insufficiently lubricated, it will cause a series of mechanical failures until the motor is burned. Further analysis shows that when the submersible pump discharges sand, the shaft power is unstable, and the windings and bearings are prone to heat. Therefore, the pressure in the cavity of the motor cha...

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Problems solved by technology

Therefore, the pressure in the cavity of the motor chamber will increase during operation, and the pressure will decrease after stopping, and the pressure fluctuation will be large, and the seal of the motor shaft hole will be easily leaked and damaged.

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