Claims
- 1. An apparatus for drawing fluid into a liquid and subsequently mixing the fluid in the liquid comprising:
- a rotatable shaft with a hollow passage therein;
- an axial fluid intake to the hollow passage at a top end of the shaft;
- an electric motor for rotating the shaft, the motor having a rotatable hollow drive sleeve fitting over the shaft with connection means between the sleeve and the shaft;
- mounting means for the electric motor for supporting the motor permitting the shaft to rotate;
- an impeller attached to a bottom end of the shaft, the impeller having two circular discs of substantially the same diameter, the discs coaxial with the shaft and having a space therebetween, the hollow passage within the shaft in communication with the space between the discs;
- a plurality of external radial impeller blades equally spaced apart around the two circular discs, the external blades projecting above and below the two circular discs and tapering inwards to join the external faces of the discs with no sharp corners, and extending outwards from the space between the discs, and
- a plurality of internal radial impeller blades, interspaced between the external radial impeller blades located in the space between the discs.
- 2. The apparatus according to claim 1 wherein the hollow drive sleeve is axially adjustable on the shaft.
- 3. The apparatus according to claim 1 wherein the hollow passage in the rotatable shaft joins to the space between the discs by means of a smooth curved internal shoulder in the impeller to provide aerodynamic flow for fluid passing through the hollow passage to the space between the discs.
Parent Case Info
This is a continuation of Ser. No. 07/618,760 filed Nov. 27, 1990, now abandoned.
US Referenced Citations (5)
Foreign Referenced Citations (6)
Number |
Date |
Country |
1189952 |
Apr 1965 |
DEX |
3407834 |
Sep 1984 |
DEX |
204038 |
Nov 1983 |
DDX |
7108614 |
Dec 1972 |
NLX |
7614453 |
Dec 1976 |
NLX |
871945 |
Jul 1961 |
GBX |
Continuations (1)
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Number |
Date |
Country |
Parent |
618760 |
Nov 1990 |
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