Anti-dry grinding fluoroplastic magnetic drive pump

Abstract

The invention relates to an anti-dry grinding fluoroplastic magnetic drive pump; a magnetic drive pump impeller 2 is arranged on a shaft end of a pump shaft 7; an outer worm body wall 1 and the impeller 2 are matched and installed through a first weight roller bearing 9 and a first axial ball bearing 8; an inner worm body wall 3 and the pump shaft 7 are matched through a second weight roller bearing 11; a second axial ball bearing 10 is matched between the impeller 2 and the second weight roller bearing 11; the magnetic drive pump can reduce vibrations and noises caused by poor dynamic balancing of the impeller 2, thus effectively preventing axial floating of the pump shaft 7 and the impeller 2, and greatly reducing friction heat; the magnetic drive pump can do idle running in certain time period when pumping liquid is absent and cutout, thus enhancing anti-dry grinding performance of the magnetic drive pump, and improving running safety of the magnetic drive pump.

Description

technical field [0001] The invention relates to a magnetic pump, in particular to a dry wear-resistant fluorine plastic magnetic pump. Background technique [0002] The magnetic pump is different from the traditional sealed pump. The motor shaft and the pump shaft are not directly connected, but the motor shaft drives the outer magnetic rotor to rotate. The outer magnetic rotor and the inner magnetic rotor cooperate to drive the inner magnetic rotor to rotate through magnetic force. The rotor drives the pump shaft to rotate, so that the impeller rotor on the pump shaft rotates to work. There is a sealing cavity formed by a spacer sleeve between the inner magnetic rotor and the outer magnetic rotor of the magnetic pump, which seals the pump shaft and the inner magnetic rotor in the sealing cavity. One can prevent the liquid from leaking from the pump shaft end to the outside, and the other can prevent the pump from leaking. The shaft and the inner magnetic rotor are cooled, ...

AI Technical Summary

Problems solved by technology

[0003] Due to the uneven material of the impeller, the accumulation of blank defects, machining errors, assembly errors, etc., as well as the asymmetric geometric shape in the design, etc., the mass distribution of the impeller is uneven and a certain eccentricity is formed. When the impeller rotates, The unbalanced centrifugal inertial force will cause the pump to generate vibration and noise. Poor dynamic balance will reduce the expected service life of the equipment, especially in the early damage of the bearing, shorten the maintenance cycle of the equipment, increase the maintenance cost of the equipment, and affect the product quality. deterioration of the working environment, etc.

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