Title:
VERTICAL SHAFT PUMP
Document Type and Number:
Japanese Patent JPH11324968
Kind Code:
A
Abstract:
To restrict the generation of vibration and noise while restricting the eccentric movement of a rotor formed of a spindle and impellers.
A sealed annular balancer 14 sealed with the liquid (for example, water) at 1/2 of volume thereof is integrally fixed to an upper end of a boss part of an impeller 2 concentrically with a spindle 1 and the impeller 2. When the sealed annular balancer 14 is vibrated by the eccentric movement of the spindle generated by the operation of a pump, the liquid 13 sealed in the sealed annular balancer 14 is eccentrically moved in a direction opposite to the deviation so as to move the center of gravity of the sealed annular balancer 14, and the eccentric movement of the spindle 1 is thereby restricted.
Inventors:
YAMAMOTO YUKIHIRO
KONISHI MASAHIDE
TAKAHASHI MASUHITO
KONISHI MASAHIDE
TAKAHASHI MASUHITO
Application Number:
JP13881098A
Publication Date:
November 26, 1999
Filing Date:
May 20, 1998
Export Citation:
Assignee:
KUBOTA KK
International Classes:
F04D15/00; F04D13/00; F04D29/04; F04D29/66; (IPC1-7): F04D13/00; F04D15/00; F04D29/04; F04D29/66
Attorney, Agent or Firm:
Koichi Suzue (1 person outside)