Zero-abrasion magnetic pump

Abstract

The invention discloses a zero-abrasion magnetic pump which comprises a pump body, an impeller, an inner magnetic rotor, an outer magnetic rotor, a sealing insulation sleeve and two friction pair assemblies. Multi-element alloy nano-coatings ultrahigh in hardness, high in abrasion resistance and ultralow in friction coefficient are deposited on the surfaces of all parts of friction pairs under the vacuum condition. The surface and an inner hole of a self-lubricating sliding bearing are provided with hydraulic power flow channels and spiral channels respectively. By the adoption of the zero-abrasion magnetic pump, key parts and key portions of the pump are subjected to surface strengthening treatment according to the latest friction theory, so that the pump is ultrahigh in hardness; and the sliding bearing with the self-lubricating characteristic is arranged, so that finally an easily-damaged piece of the magnetic pump can never be abraded in the operation process. By the adoption of the zero-abrasion magnetic pump, a new chapter is started for the magnetic pump industry, the problems that the easily-damaged piece of the magnetic pump is frequently damaged and the defect cannot be overcome are solved, the service life of the pump is greatly prolonged, and the reliability of the device is improved greatly.

Description

technical field [0001] The invention relates to a magnetic pump, in particular to a never-wearing magnetic pump. Background technique [0002] The magnetic pump is a sealless pump driven by the force of the permanent magnetic field. When the motor drives the outer magnetic rotor, the magnetic field passes through the air gap and the non-magnetic isolation sleeve to drive the inner magnetic rotor connected to the impeller for synchronization. Rotate to realize the non-contact transmission of power, transform the dynamic seal into a static seal, widely used in petroleum, chemical, pharmaceutical and other industrial fields, in the sealed state for flammable, explosive, volatile, corrosive and precious liquids The transportation is more and more favored by the majority of users. [0003] The magnetic pump is also called the magnetic transmission centrifugal pump. It has a very different structure from the centrifugal pump: the inner magnetic rotor and the impeller that drive t...

AI Technical Summary

Problems solved by technology

[0004] With the development of magnetic pumps to this day, in order to improve the service life of magnetic pumps, Chinese technicians have conducted a lot of research on the material matching of thrust rings, sliding bearings, and bushings. From the PTFE filled in the 1970s, the development From carbon graphite to carbon graphite, pressureless sintered silicon carbide (SSiC) has been widely used until now. Although the hardness, wear resistance and corrosion resistance of the material have been improved, because the material of the pump shaft is stainless steel (or other alloy steel), it and There is a serious difference in the thermal expansion coefficient of non-metallic silicon carbide (stainless steel 304, the thermal expansion coefficient is 17.2×10-6 / °C; silicon carbide SSiC is 4.3×10-6 / °C), which leads to the cracking of silicon carbide at high temperature Unavoidable failures that cause equipment to stop operating and cause serious consequences such as explosions

[0005] The technical problem to be solved by the present invention is to provide a magnetic pump to solve the serious consequences of the above problems

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