Magnetic pump
US6443710B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 17, 2001 |
| Grant date | Sep 3, 2002 |
| Priority date | — |
| Expiry date | Apr 17, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D13/027
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A magnetic pump comprises a front casing (1) for forming an interior pump space (2) and having an inlet (3) for drawing in a fluid to be pumped and an outlet (4) for discharging the fluid, a rear casing (6) for forming a cylindrical space (5) extending from the pump space (2), a supporting shaft (7) having a rear end supported by a rear end of the rear casing (6) and a front end facing to the pump space (2), and a rotator (10) rotatably supported by the supporting shaft (7). The rotator (10) includes a totally cylindrical magnetic can (13) having an inner circumference on which a cylindrical rotary bearing mounted and an outer circumference on which a driven magnet is mounted, and an impeller (14) secured on a front end of the magnetic can (13) and accommodated in the pump space (2) so as to rotate integrally with the magnetic can (13). A rear bearing (19) is located at a rear end of the rotary bearing (11) via a cushion member (18). A rear thrust bearing (20) is arranged at a portion opposite to the rear bearing in the thrust direction for contacting the rear bearing (19) when the rotary bearing (11) moves backward during an abnormal run of the pump. One of the rear bearing (19) a…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.