Positive displacement rotary pump with bearings in countersunk portions of the rotors
US4293290A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 4, 1979 |
| Grant date | Oct 6, 1981 |
| Priority date | — |
| Expiry date | May 4, 1999 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01C21/02
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A positive displacement rotary pump is provided for use in circulating a viscous product at high pressures. The pump includes a housing having a product inlet and a product outlet communicating with an interior cavity. One wall of the cavity is defined by a removable cover. A pair of spaced substantially parallel shafts extends through a wall of the cavity opposite the cover wall. One end of each shaft is supported by the cover. A pair of meshing rotors is locked on the shafts and disposed uniformly within the cavity. The endface of each rotor adjacent the removable cover has a substantial countersunk portion. Bearing means, substantially isolated from the product, is disposed within each rotor endface countersunk portion and supportingly engages a segment of the rotor shaft one end. At least a portion of each bearing means is located between planes defined by the surfaces of the cover and the wall opposite thereto which coacts to form the cavity. Means for supporting the bearing means is removably mounted on the cover.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.