| 摘要 |
The pump comprises a pump body 1 coupled to a motor body 2 with a cylindrical neck 3 housing the impeller 4, the latter mounted between bearings 6 (and 7 Fig 1) which are moreover axially mounted on the relevant live axle 5 at the upper end of which is mounted the wheel 8. A disk-shaped part 9 having a sealing gasket (15) and a cap 18 is provided to prevent access of dirt and particles to the impeller, this being assisted by a felting 26. There is also provided another gasket 24 provided between the cap 18, the pump body 1 and the motor body 2 to provide a suitable sealing system. The arrangement is said to protect the impeller-wheel transmission from any dirt and suspended particles, at the same time muting noise and quenching vibration during start-up since the o-ring seal joined to the disk-shaped body brakes the live axle during start-up. <IMAGE>
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