Apparatus for production of granulated and pulverized particles

Details Apparatus for production of granulated and pulverized particles Apparatus for production of granulated and pulverized particles

1974-10-07

1977-07-26

Spicer, Jr, Robert L.

Plastic article or earthenware shaping or treating: apparatus

Preform severing means

Means forming from bulk and downstream severing means

425331, 425362, B29B 103

Patent

active

040380106

ABSTRACT:
Method and various embodiments of apparatus for producing granulates from pulverulent, granular, doughy or similar material. Material to be granulated is continuously fed into the apparatus and formed into a skin of the material in the nip space between two adjacent and cooperating rotating curved surfaces. The skin and material progresses axially of the rotating surfaces and is periodically and repeatedly kneaded as it is conveyed by the rotating surfaces towards and forced through outlet apertures whereupon it is divided up into granulates. The apparatus can be in various embodiments which use paired, skinforming rotating curved surfaces and can be the surfaces of rollers or of at least one roller cooperating with the internal surface of a drum. The rolling surfaces can be cylindrical or combinations which include one or more cylindrical, tapered or axial contoured surfaces. Single or opposed helical lands or grooves can be incorporated in one or both of the paired rotating surfaces.

REFERENCES:
patent: 2177132 (1939-10-01), Crabtree
patent: 2295838 (1942-09-01), Glaze
patent: 2306145 (1942-12-01), Thompson
patent: 2325374 (1943-07-01), Cover
patent: 2700940 (1955-02-01), Johnson
patent: 3485186 (1969-12-01), Vincent
patent: 3892515 (1975-07-01), Bremer

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