A grooved bearing dynamic pressure suspension mechanical pump

Abstract

The invention belongs to the field of mechanical pumps, and discloses a notch groove bearing dynamic pressure suspension mechanical pump which comprises a volute, an upper end cap, an impeller, a brushless electric machine, a waterproof sleeve and water lubrication spiral groove thrust bearings. The volute is provided with a water inlet channel and a water outlet channel; the brushless electric machine comprises an electric machine shell, a silicon steel sheet, a coil, a magnetic steel rotor, a waterproof sleeve, a rotor sleeve and a rotor rotating shaft; and the upper portion and the lower portion of the magnetic steel rotor are each provided with one water lubrication spiral groove thrust bearing, and each water lubrication spiral groove thrust bearing comprises a fixed ring and a movable ring with a spiral screw. When the mechanical pump works, liquid enters the waterproof sleeve of the electric machine through a water inlet hole in the middle of the upper end cap, an internal circulation runner is formed by the liquid inside the electric machine, dynamic pressure bearing force can be formed, heat generated by the electric machine can be brought away, and the effect of cooling the electric machine is achieved accordingly.

Description

technical field [0001] The invention belongs to the field of mechanical pumps, and more specifically relates to a suspension mechanical pump. Background technique [0002] Since the 1980s, micro-electromechanical systems (MEMS) based on micro-processing technology have gradually entered the industrial application period from the laboratory exploration stage. Microfluidic system is a main research direction in microelectromechanical systems. It has the characteristics of small size, automation, integration and mass production, and because of its small size, it can reduce the invalid volume in the flow system, improve control accuracy, and reduce Low energy consumption and reagent consumption, and fast mechanical response. Therefore, in recent years, it has a huge market application prospect in the fields of fluid precision control, chemical analysis (such as micro-total analysis system), chip cooling and micro-satellite. As the power source in the microfluidic system, the m...

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Problems solved by technology

In order to improve the power-to-mass ratio of the micropump and make the hydraulic components under the miniature size output more pump work, it is necessary to further increase the impeller speed, which will cause the load on the bearing to increase exponentially. Due to the above reasons, mechanical contact bearings, Seriously restrict the service life of the micropump

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