Patent ID: 8770953
Filing Date: 2014-07-08
Classification: F04B

Abstract:
1. A motor driven fluid pump, comprising: a pump body having a motor chamber and a pump chamber; a bearing supporting a rotary shaft of a motor which extends from the motor chamber to the pump chamber, in the pump body; a mechanical seal disposed between the rotary shaft of the motor and the pump body and blocking the motor chamber and the pump chamber; a bearing guide integrally fixed to the rotary shaft of the motor, between the bearing and the mechanical seal; a fluidproof plate fixed to the pump body to overlap the bearing guide, perpendicular to the rotary shaft of the motor; and a leachate exhaust aperture and a vapor exhaust aperture formed in the pump body to communicate with a space between the fluidproof plate and the mechanical seal; wherein a plurality of air motion tips bending toward both sides of the fluidproof plate are alternately formed circumferentially on an inner circumference of the fluidproof plate.