Compound nozzle for cement 3D printer to produce thermally insulated composite cement

» Número: US10399247B1 (B1)

» Fecha Publicación: 03/09/2019

» Solicitante: UNIV UNITED ARAB EMIRATES?[AE]; QATAR UNIV?[QA]

» Inventor: AL JASSMI HAMAD?[AE]; ALNAJJAR FADY S?[AE] (1)

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The compound nozzle for a cement 3D printer to produce thermally insulated composite cement is useful for producing composite thermally insulated cement sections using a 3D printer. The nozzle includes an insulation nozzle concentrically disposed in the central discharge orifice of the compound nozzle to produce a stream of insulation media axially surrounded by a stream of cement mixture extruded from the nozzle to form a wall with a cement exterior and an insulation interior. A motor-driven auger is controlled by a controller, and the cement is supplied from the top either manually or by a concrete pump. The insulating material is supplied to the insulation nozzle by a separate line that uses another pump. The system includes a cleaning mechanism to clean the internal components of the compound nozzle using water jets and a drying system to dry the internal components without disassembling the system.

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