Title:
CONCRETE PUMP
Document Type and Number:
Japanese Patent JPS53129307
Kind Code:
A
Abstract:
A pump for conveying cement comprises two pump cylinders and reciprocating pistons, an input container, a multi-limb oscillating shutter valve arranged in front of the pump cylinders and below the input container, the housing of the valve including a suction connection leading from the input container, two ports connected to the pump cylinders respectively, and an outlet located in the end wall of the housing. Two inlet ports are provided in the housing for placing the suction connection in communication with the ports connected to the pump cylinders respectively. The oscillating shutter is mounted on a horizontal shaft to be movable between two positions, and includes two control limbs, each controlling a different one of said inlet ports, and an outlet control limb the forward edge of which passes over and controls said outlet.
Inventors:
FURIIDORITSUHI SHIYUBUINKU
Application Number:
JP4377178A
Publication Date:
November 11, 1978
Filing Date:
April 13, 1978
Export Citation:
Assignee:
SCHWING FRIEDRICH WILH
International Classes:
F04B7/00; F04B15/02; (IPC1-7): F04B15/02