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US 5,269,649 AGranted
Pre-rotational swirl controller for rotary pumps
AssigneeHalberg Maschinenbau GmbH
InventorsLudwig Kiefer, Jorg Low, Horst Lottermoser, Kurt Muller
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AssigneeHalberg Maschinenbau GmbH
InventorsLudwig Kiefer, Jorg Low, Horst Lottermoser, Kurt Muller
Estimating the term…
Pre-rotational swirl controller for rotary pumps having a flow duct enclosed by a casing and a plurality of guide vanes located substantially radially within it. Each of these has two bearings, i.e. one on a hub located centrally and one on a trunnion which passes through the casing and which is also acted upon by an adjusting device. The guide vanes can be radially assembled through the casing because, for each guide vane, there is a removal slot which is closed by a cap which carries the seal and the bearing for the guide-vane trunnion, these being designed so as to be tolerant of alignment errors. A self-locking setting gear with a large transmission ratio and a through drive shaft is provided for the adjustment.
Prerotational swirl controller for rotary pumps having a flow duct enclosed by a casing and a plurality of guide vanes located substantially radially within the casing, each guide vane being supported on the casing at one end and on a permanently located hub at the other end, and having an adjusting device for adjusting the guide vanes, wherein a bearing for supporting a guide vane is located on a cap piece which closes an opening in the casing appropriate to the cross-sectional size of the guide vane, the bearing being designed to be tolerant of alignment errors.
A pre-rotational swirl controller for a rotary pump, comprising:
Dependencies are inferred from the claim text.