Axial force balancing mechanism of internal magnetic rotor of magnetic pump

Abstract

The invention provides an axial force balancing mechanism of an internal magnetic rotor of a magnetic pump. Interception ring belts (5) are arranged on an inner ring face of a rotor ring (11) of the internal magnetic rotor and an external ring face of a sliding bearing sleeve (4) on a pump cover, so that a pressure (P1) of a medium entering to the front side of a wheel disc (12) of the internal magnetic rotor (1) is controlled; a backflow hole (6) is arranged on the wheel disc (12) of the internal magnetic rotor (1); and when the pressure of the medium at the front side of the wheel disc (12) of the internal magnetic rotor (1) is not equal to a pressure of the medium at the back side of the wheel disc (12), backflow balance is carried out through the backflow hole (6), and pressures of cavities at the front side and the back side of the rotor (1) are automatically adjusted to be equal. Therefore, an axial force generated by that the pressures at the front end and the back end of the internal magnetic rotor are not equal can be reduced and removed.

Description

technical field [0001] The invention relates to a magnetic pump, in particular to a mechanism for balancing the axial force of a magnetic rotor in the magnetic pump. Background technique [0002] When the magnetic pump is running, the medium will enter the inner cavity of the isolation sleeve for circulation. The inner and outer ring surfaces of the rotor ring of the inner magnetic rotor are respectively matched with the isolation sleeve and the sliding bearing seat sleeve on the pump cover, and the medium is isolated. The front side and rear end side of the inner magnetic rotor in the sleeve generate unequal pressure, and because the force bearing surfaces of the front end side and the rear end side of the inner magnetic rotor are not equal, the front and rear end sides of the inner magnetic rotor are affected by the pressure difference It will cause the inner magnetic rotor to generate axial force, so it has a great influence on the axial force of the entire rotor system,...

AI Technical Summary

Problems solved by technology

[0002] When the magnetic pump is running, the medium will enter the inner cavity of the isolation sleeve for circulation, and the inner and outer ring surfaces of the rotor ring of the inner magnetic rotor are respectively in contact with the isolation sleeve. The gap fits with the sliding bearing seat sleeve on the pump cover, and the medium produces unequal pressure on the front end and rear end of the inner magnetic rotor in the spacer, and at the same time due to the force surface on the front end and rear end of the inner magnetic rotor Not equal, the pressure difference between the front and rear ends of the inner magnetic rotor will cause the inner magnetic rotor to generate axial force, so it has a great impact on the axial force of the entire rotor system, which will affect the smooth rotation and service life of the rotor system

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