| 专利名称： | PUMP, IN PARTICULAR GEAR PUMP INCLUDING CERAMIC GEARS AND SEAL |
| 公开（告）号： | |
| 公开（公告）日： | 2007-03-08 00:00:00 |
| 申请（专利）号： | DE20016023061T(DE60123061T) |
| 申请日： | 2001-07-11 00:00:00 |
| 发明（设计）人： | FLUID MAN INC (US) |
| (申请)专利权（人）： | KUIJPERS ADRIANUS (NL);POST GERARD (NL) |
| 内容： | A gear pump comprises a housing (1) having an inlet (7) and an outlet (8). First and second gears (13, 14) are provided with meshing gear teeth. The gears are ceramic rotor gears which are journaled within the housing. A drive shaft (19) drives the first gear in order to move it relative to the second gear, such as to pump a fluid from the inlet to the outlet of the housing.The housing includes an opening (21, 22) for the passage of the drive shaft and a seal (24, 25; 30, 31; 36, 38) surrounding the opening. The seal comprises a first seal part (24; 30; 36) rotating with the first gear, and a second seal part (25; 31; 38) forming part of the housing (1). The first and second seal parts have facing sealing surfaces, are made of ceramic material and are loaded towards each other by a biasing member (29; 32; 34; 39) parallel to the drive shaft. In this way, there is created a mechanical seal between the gear and the housing obviating the need for a seal between the drive shaft and the housing. |
发布日期：2007-08-24 09:33:00