| 摘要 |
<p>A fluid pump having a pump motor, pump housing, and pump seal enclosure. The pump housing includes an internal pumping chamber, a suction orifice in flow communication with the pumping chamber, a discharge orifice in flow communication with the pumping chamber, and a drive shaft opening. The pump seal enclosure is disposed between the pump motor and the pump housing. A pump drive shaft is rotatably driven by the pump motor and extends through the pump seal enclosure and the drive shafting opening into the pumping chamber. A drive shaft seal assembly is disposed within the pump seal enclosure. The drive shaft seal assembly includes a spring seat fastened to the drive shaft, the spring seat being disposed coaxially with the drive shaft and adjacent the pump motor and further having a first alignment mechanism, a rotary ring disposed coaxially with the drive shaft and having a second alignment mechanism for engaging the first alignment mechanism of the spring seat, a stationary ring disposed coaxially with the drive shaft and fastened to the pump seal enclosure adjacent the drive shaft opening, and a compressible spring disposed coaxially with the drive shaft between the spring seat and the rotary ring, wherein the spring biases the rotary ring against the stationary ring.</p> |
