B - Operations – Transporting – 01 – F
Patent
B - Operations, Transporting
01
F
302/22, 222/10.4
B01F 15/02 (2006.01) B29C 45/18 (2006.01) B29C 47/10 (2006.01) G01F 11/18 (2006.01)
Patent
CA 1066237
ABSTRACT OF THE DISCLOSURE Method of extracting, measuring and adding a product. The subject matter of the present invention is a method of extracting and measuring a product and adding said product to a product contained in a hopper. The method, according to the invention, of extracting and measuring out a product from a bulk stock and adding said product inside a hopper is essentially charac-terised in that it uses at least three perforated surfaces or plates superimposed on one another and in contact with one another so that the product to be extracted is trapped in the hole(s) in the centre plate between the top plate and the bottom plate by a relative movement of the top plate in relation to the two other plates then stationary in relation to each other and the product so trapped in the hole(s) in the centre plate is extracted to the outside by a relative movement of the centre plate in relation to the top plate and the bottom plate, then stationary in relation to each other, or by a relative movement of the bottom plate in rela- tion to the centre plate and the top plate. The addition and mixing of the additive so extracted with a product contained ina hopper, which products may be a pigment and a plastic in granules in a hopper,is done by making a cavity in the bulk of the product contained in the hopper in an area close to its delivery nozzle and by pouring through the bulk of said product, from one or several distributors controlled by the device fed by the hopper, the additive(s) into the cavity for mixing there, which avoids dirtying the whole of the hopper and makes better and more proportionally accurate mixingpossible. The method according to the invention and the devices for putting it into effectare particularly useful when small grain or powdered products have to be measured, as is particularly the case in the plastics processing industry.
282760
Chambon Rene
Na
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