| 摘要 |
PURPOSE: A residual concrete recovery system of a concrete pump car is provided to reduce a collecting time and to increase the recovery efficiency of residual concrete. CONSTITUTION: A residual concrete recovery system of a concrete pump car comprises an air supply hose(18), a housing(10), a sluice valve(33), a connection pipe(11), a pipe connection member(35), a screw device(15) and a hydraulic motor(17). The housing inhales the residual concrete remaining in a hopper(30) of a pump car using gravity and negative pressure. The sluice valve opens and closes a return duct(31) installed at the side of hopper. The pipe connection member combines the connection pipe in the return duct. The screw device is installed within the housing and guides concrete to an outlet.
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