Concrete pump for the wet spraying process

Details Concrete pump for the wet spraying process Concrete pump for the wet spraying process

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F04B 17/00 (2006.01) B05B 7/32 (2006.01) B05B 12/14 (2006.01) B65G 53/32 (2006.01) F04B 15/02 (2006.01) F04B 35/00 (2006.01)

Patent

CA 2034098

With a concrete pump for the wet spraying method in which a standard concrete is pumped to a mixing nozzle where compressed air and, if necessary, setting accelerators are added to the concrete flow and this is applied with the nozzle and sealed, the invention is characterized, according to a first solution of the object which is to, on the one hand, minimize the fine dust accumulation on the nozzle, on the other hand, to ensure that the amount of compressed air required for the wet spraying method is available, by a control system (20) in which the delivery of the concrete pump (1) forms the reference input for a volume control of the compressed air flowing to the mixing nozzle (3), in such a way that the ratio of the actual value of the amount of compressed air mixed in per unit of time to the amount of concrete pumped per unit of time corresponds to a desired value which renders the minimum accumulation of fine dust when the concrete is being applied (Fig. 1).

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