| 摘要 |
A coolant pump system features a pump impeller supported on a pump shaft without bearings, and an axially in-line drive shaft with bearings coupled to the pump drive shaft. The system minimally includes a pump body having a bore therein, a coolant pump impeller, a pump shaft passing through the bore and having the impeller mounted on one end thereof, and a bearingless seal shaft assembly disposed in the bore which prevents coolant from leaking out of the body around the rotating pump shaft. The outer end of the pump shaft and the drive shaft are designed to be quickly disconnected to allow simpler, easier, less expensive interconnection of or replacement of the coolant pump, should that ever be necessary. This interconnection mechanism may take the form of a socket with bayonet slot on one shaft and mating pin on the other shaft that fits in the slot, an in-line threaded stem on one shaft and complementary mating socket on the other shaft, or an in-line unthreaded stem on one shaft and a mating socket on the other shaft with a transverse fastener to secure the shafts from separating. This direct-coupled axial in-line design may be advantageously used with an electric drive motor, a chain-driven, belt-driven or gear-driven drive shaft.
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