Flexible impeller pump
AssigneeMarine Flow Limited
InventorStuart Drysdale
Life of this patent
Estimating the term…
Abstract
The present invention relates to improvements in the area of flexible impeller pumps. In particular, the present invention relates to flexible impellers with improved profiles (such as dual sealing lips), which are particularly well-suited to multiple cam pumps. A novel mounting hub configuration for mounting an impeller on a drive shaft is also provided. Pumps comprising such impellers and/or mounting hubs are provided, as are associated methods of installation and removal.
Claims23
A mounting hub operable to connect a flexible impeller to a drive shaft.
A method of installing a flexible impeller into a flexible impeller pump housing, the method comprising:
- a) providing a flexible impeller;
- b) providing a flexible impeller pump housing having disposed therein a drive shaft for the flexible impeller;
- c) inserting the flexible impeller into the pump housing, preferably using a rotating action to facilitate insertion impeller;
- and
- d) providing a mounting hub operable to connect a flexible impeller to a drive shaft, and inserting the hub so that the hub rotationally locks the flexible impeller relative to the drive shaft.
A method of extracting an impeller mounted on a drive shaft via a mounting hub as set out above from a pump housing, the method comprising the steps of:
- a) engaging an extraction tool with an extraction means provided on the hub;
- b) operating the extraction tool to extract the hub from the drive shaft;
- and
- c) thereby extracting the impeller from the housing.
An impeller assembly, the impeller assembly comprising a flexible impeller and a mounting hub operable to connect the flexible impeller to a drive shaft.
Dependencies are inferred from the claim text.