GB850688A - Method of and apparatus for dispersing solid particles in liquids - Google Patents

Abstract

850,688. Mixing apparatus. TORRANCE & SONS Ltd. July 12, 1957 [July 13, 1956; March 12, 1957; May 27, 1957], Nos. 21770/56, 8188/57 and 16788/57. Class 86 In a method of forming a dispersion of a finely divided solid in a liquid, a rotary stirring device operates continuously in in a container having filling and withdrawing means operated alternately at spaced intervals. The apparatus is particularly suitable for mixing paint and in one form described a container 1 supplies the partially mixed ingredients through a pump 2 to the bottom of the mixing container 4, which is partially filled with steatite beads. Discs 9, 9 on a motor shaft 7 are continuously rotated and perform a centrifuging action so that the mixture is thrown up the sides of the container and around one or more stationary baffles 9a. After a predetermined mixing time the emptying pump 13 removes the product through a screen 10 which prevents the passage of the steatite particles. Thereafter, the filling pump 2 feeds in a fresh charge of the materials and is automatically switched off when the contents in the container 4 reach a paddle 15 which actuates a switch 15a. The motor 8, driving the discs 9 is kept running continuously and the switching of the motors 13 and 2 is performed by automatic timing switches. Specification 850,687 is referred to.