| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a screw pump with field refurbishment provisions. <P>SOLUTION: Screws 40 of a screw pump 20 with field refurbishment provisions have helical flights that intermesh during rotation, and extend between an inner end 44 and an outer end 42. Each screw 40 is formed with a hollow core 80 for receiving its shaft 50 such that the screw 40 slips onto the respective shaft 50 therefor over the outer end 74 of the shaft 50. The screw pump further includes a keyless locking mechanism 56, 58 intermediate each shaft 50 and the screw 40, which is operative to rotationally lock the shaft 50 and the screw 40 together without a key or a keyway. <P>COPYRIGHT: (C)2012,JPO&INPIT |
