Rotary pump for conveying a fluid
US11971046B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 13, 2023 |
| Grant date | Apr 30, 2024 |
| Priority date | — |
| Expiry date | Jan 13, 2043 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/128
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A rotary pump for conveying a fluid, includes a pump housing, a pump shaft, a hydraulic unit, a mechanical seal, and a stator. The hydraulic unit conveys and pressurizes the fluid, includes an impeller fixedly mounted on the pump shaft, and during operation generates an axial thrust to act on the pump shaft. The mechanical seal seals the pump shaft and includes a rotor connected to the pump shaft in a torque proof manner. The stator is stationary with respect to the pump housing. The mechanical seal is arranged between the hydraulic unit and an end of the pump shaft, and is a balancing device configured to generate an axial force on the pump shaft during operation, with the axial force configured to counteract the axial thrust.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.