| 摘要 |
PROBLEM TO BE SOLVED: To provide an internal pump capable of shortening a time required for manufacturing a motor cover, and reducing a load applied to a screw member mounted on the motor cover among motor loads transferred to a nut member to be engaged with a screw rod for moving up and down a pump driving motor. SOLUTION: This internal pump 1 is described as follows: a submergible motor 3 having a motor cover 8 mounted on the lower end is mounted in a pump casing 2; projections 14, 16 are formed on two side faces 13, 15 of the motor cover 8; each connection member 12 having each groove formed thereon is mounted on each side face 13, 15 with a bolt; the projections 14, 16 are inserted into each groove of each connection member 12; and each nut member engaged with a guide screw of a lifting device is mounted on each connection member 12 with a bolt. The submergible motor 3 is taken out from the motor casing 2 by dismantling the nut 11, and by rotating the guide screw. COPYRIGHT: (C)2010,JPO&INPIT
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