Automatic driving shaft sealing magnetic pump

Abstract

The invention provides an automatic driving shaft sealing magnetic pump. The automatic driving shaft sealing magnetic pump comprises a pump body (1), a cover (2), a pump shaft (3), an impeller (4), an inner magnetic rotor (5), an insulating sleeve (6), an outer magnetic rotor (7), a connecting frame (8), a driving shaft (9) and a bearing box (10). The automatic driving shaft sealing magnetic pump is characterized in that a dry air type mechanical sealing device (12) is arranged between the shaft sleeve part of the outer magnetic rotor (7) and an end cover of the bearing box (10); an alarming induction sensor (13) is arranged in an inner cavity of the connecting frame (8). According to the automatic driving shaft sealing magnetic pump, when medium leaks from the insulating sleeve (6) enters the inner cavity of the connecting frame (8), the dry air type mechanical sealing device (12) seals the driving shaft (9) to prevent the medium from further leaking out of the pump through the bearing box (10), and therefore, sufficient time is provided for external assembling.

Description

technical field [0001] The invention relates to a magnetic pump, and its main technical feature lies in the sealing of the drive shaft of the magnetic pump. Background technique : [0002] The magnetic pump includes pump body 1, pump cover 2, pump shaft 3, impeller 4, inner magnetic rotor 5, spacer sleeve 6, outer magnetic rotor 7, connecting frame 8, drive shaft 9, bearing box 10, spacer sleeve 6 and pump cover 2. The sealing and fixed connection seals the pump shaft, and the inner magnetic rotor 5 installed on the pump shaft 3 is inside the isolation sleeve 6 and the outer magnetic rotor 7 outside the isolation sleeve 6 cooperates to drive the pump shaft 3 to rotate. [0003] In the prior art, only a dustproof disk and a labyrinth seal structure are provided between the bearing gland of the bearing housing 10 and the drive shaft 9, or between the bearing gland of the bearing housing 10 and the sleeve of the outer magnetic rotor installed on the driving shaft 9 , which ju...

AI Technical Summary

Problems solved by technology

[0004] During operation, ferromagnetic or granular impurities mixed in the medium will enter the isolation sleeve and cause wear and leakage of the isolation sleeve, or the isolation sleeve will be damaged due to other reasons. 6 leakage, once the spacer sleeve 6 leaks the high-pressure medium in its inner cavity and enters the inner cavity of the connecting frame 8, it will leak outward along the gap of the drive shaft 9, and the dust-proof disk and labyrinth seal on the drive shaft 9 cannot prevent it The high-pressure medium leaks outward along the drive shaft 9, causing the magnetic pump to leak, and the production personnel cannot quickly and effectively control it

Since most of the media conveyed by the magnetic pump are flammable, explosive, toxic, harmful or relatively expensive media, once the isolation sleeve leaks, it will not only affect production, cause pollution, and even endanger the lives of production personnel

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