Wet pick-up vacuum unit motor bearing air seal

Details Wet pick-up vacuum unit motor bearing air seal Wet pick-up vacuum unit motor bearing air seal

F - Mech Eng,Light,Heat,Weapons

16

J

277/11, 15/61

F16J 15/40 (2006.01) A47L 5/22 (2006.01) F04D 25/08 (2006.01)

Patent

CA 1070348

ABSTRACT A wet pick-up type vacuum motor fan unit with a separately ventilated motor section and a motor end bracket serving also as a support for, and part of a discharge end housing wall for, the working air fan section, has on the bracket fanward face a centrally apertured metal disk plate defining a flow space or path for bearing sealing air flow from ambient air inlets external of the motor section to a central discharge into the inlet eye of an auxiliary fan clamped on the shaft back-to-back with a larger diameter working air centrifugal fan adjacent the end bracket. A stamped shield cup jointly clamped on the shaft with the fans extends out of the auxiliary fan inlet eye into the disk central aperture, surrounding the shaft bearing socket of the bracket and being spaced from the disk aperture edge to afford a sealing air outlet from said space into the auxiliary fan inlet eye; whereby the disk plate and shield afford mechanical shielding, while air, discharging to and from the auxiliary fan, provides air shielding of the shaft and bearing area from working air entrained foam and moisture.

284948

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