plaster paste mixing and stirring device, method for mixing and stirring plaster paste, and method and apparatus for making lightweight plasterboard

摘要

1/1 summary “Mixing and stirring device for plaster paste, method for mixing and stirring plaster paste, and method and apparatus for making light plaster plates” [problem] prevent irregularities, deviation or variation in the distribution of density of gypsum paste on a base paper for a gypsum board by reducing the swirling of gypsum paste flowing to the base paper for a plaster board. [solution] a mixing and stirring device (10) for plaster paste has a circular housing (20) to form a mixing region, and also has a rotating plate (32) ) arranged within the housing. the mixing and stirring device (10) additionally has a tubular passageway (50, 90, 95, 96, 97, 97â „¢) to supply the paste in the base paper (1) to a plasterboard. a rail has flow passage portions (60, 61, 91, 92) which are provided with asymmetric flow passage cross sections with respect to the central axis (c, c1) of the passage alternatively, the chute has flow passage portions (98, 99) in which the position of the central axis of the tubular passage is changed by changing or shifting the section flow passageway. an axially symmetric vortex flow that is generated as a vortex flow in the tube (f) within the tubular passage collapses in the flow passage parts and, as a result, the plaster paste (3) that flows out to the base paper for a plasterboard does not substantially flow in a swirling motion that causes non-uniformity or instability of density distribution.