F - Mech Eng,Light,Heat,Weapons – 04 – B
Patent
F - Mech Eng,Light,Heat,Weapons
04
B
F04B 15/02 (2006.01) B01F 15/04 (2006.01) B28C 7/16 (2006.01) F04B 9/10 (2006.01)
Patent
CA 2089979
Abstract The invention covers a device for the pneumatic delivery of concrete that is hydromechanically transported in an enclosed stream (2) with a concrete pump (1) for the hydromechanical transport, and a solidification accelerator dosing device. In order to provide a device that allows the simultaneous metered addition of several additives which in each case are adjustable from a minimum to a maximum volume, it is provided that at least one additional additive dosing device (500, 501, 502) with a linear piston pump (470, 471, 472) is included, that is also connected to the linear piston drive (34-37) of the device, where in the discharge lines (480, 481, 482) of each additional dosing device (500, 501, 502) a distribution valve (490, 491, 492) for the redirection of the dosing agent into each one dosing agent tank (460, 461, 462) or into the dosing agent discharge line (8, 81, 82) is installed, where the distribution valves (490, 491, 492) are loaded with the pressure of the hydraulic medium prevailing in the piston cavity of the working cylinders (25, 26). (Fig. 1)
Fetherstonhaugh & Co.
Friedrich Wilh. Schwing Gmbh
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