CENTRIFUGAL PUMPS

• US 3,732,032 A
• Filed: 02/16/1971
• Issued: 05/08/1973
• Est. Priority Date: 02/16/1971
• Status: Expired due to Term

• Current Assignee: Charl M. Daneel
• Original Assignee: Charl M. Daneel
• Inventors: Daneel, Charl M.
• Primary Examiner(s): Raduazo, Henry F.
• Application Number:
  US05/115,333
• Time in Patent Office: 812 Days
• Field of Search: 415/106,104,204,206,213 416/144,500
• US Class Current: 416/144
• CPC Class Codes: F04D 29/225 Channel wheels, e.g. one blade or one flow channel

Abstract

The invention relates to an impeller for a centrifugal pump permitting the passage of solids through the pump and which maintains a high delivery pressure and capacity in which the impeller has a body having, in cross section, a regular polygonal configuration, an axis of rotation located substantially equidistant the corners of the body, an inlet to the body located at the axis of rotation, an outlet from the body provided in a sidewall of the body and a conduit communicating between the inlet and the outlet.

Claims

1. A pump impeller comprising a body having, in cross section, a regular polygonal configuration and a hollow interior, an axis of rotation located substantially equidistant the corners of the body, an inlet to the body located at the axis of rotation, a single outlet from the body provided in a sidewall of the body, each sidewall being perforated, in corresponding sidewall positions, towards a corner of the body, means balancing the impeller, and a conduit communicating between the inlet and the outlet.

2. An impeller as claimed in claim 1 in which the body is three-sided.

3. An impeller as claimed in claim 2 in which the sidewalls of the body are bowed outwardly.

4. An impeller as claimed in claim 1 in which the outlet is provided in a sidewall between a perforation through the sidewall and a corner of the body remote from the perforation.

5. An impeller as claimed in claim 4 in which the outlet is located closer to the perforation than the corner remote from the perforation.

6. An impeller as claimed in claim 1 in which the impeller is balanced internally.