Improvements in Apparatus for Mixing and Effecting Exchange of Temperature by Means of Moving Surfaces.

摘要

18,487. Ragot, J., and Tourneur, H. Aug. 22. Moving-stirrer apparatus.-A viscous substance is mixed and at the same time heated or cooled by means of apparatus such as that shown in Figs. 1 and 3. The substance to be mixed is contained in a trough 1 within which rotates a tubular helix, or two tubular helices, mounted on a shaft or shafts 2, the heating or cooling fluids circulating through the helix or helices, through which the mixing-paddles 4 are attached. The shaft 2 has at one end a hollow shaft 6 on which is fitted a steam or water distributing-box 7 provided with inlet pipes for the steam and the cooling - liquid respectively, and with an exhaust pipe 35. The heating or cooling fluid passes along an annular space 13 in the pipe 6, and thence through a pipe 15 to the coils, the fluid finally returning through the pipe 30 and an inner passage 33 to the exhaust or outlet pipe 35. In the case of long troughs, two helices 22, 23 are preferably used, their respective shafts 2 being connected by a hollow shaft, through which the fluid circulates. In this arrangement, the fluid is first caused to circulate through the coil 22 and then through the coil 23.