High efficiency mixing impeller

Details High efficiency mixing impeller High efficiency mixing impeller

1980-03-25

1981-12-15

Coe, Philip R.

Agitating

Agitator

Stirrer

261 93, 366317, 416199, B01F 716

Patent

active

043056733

ABSTRACT:
The mixing impeller of the invention has a central, axial hub adapted for attachment to a rotatable driven shaft of a mixer motor. Mounted on the hub is a disc that extends radially from the hub. Circumferentially spaced around the disc are a number of impeller blades. Each blade has two different surfaces for mixing a liquid. One surface is flat and rectangular; the other surface is arrowhead-like, converging from the axial ends of the rectangular surface toward the middle of the rectangular surface of the next adjacent blade. When rotated at a given speed in a fluid in one direction, the impeller draws considerably less power than when rotated in the same fluid at the same speed in the opposite direction. Under certain operating conditions, the impeller has a higher mass transfer efficiency, in both directions of rotation when compared to other impellers. The blades of the impeller may be either open or closed, thereby further modifying the power characteristic of the impeller.

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