Abstract: A machine for coating granular articles and the like includes a rotating drum or a coating pan (1), which receives a predetermined mass of articles to be treated. The machine includes also a tubular manifold (4), whose axis is parallel to the axis of said coating pan (1) and which communicates with an outer first pipe (5). A plurality of perforated hollow bodies (14) extend from said manifold (4) and are dipped into the moving mass of the articles to be treated. A second pipe (6) communicates with the coating pan (1), so as to create a flow of air for ventilating the articles. The perforated hollow bodies (14) are telescopic, so as to allow adjustment of their length in order to change the depth of penetration thereof in the moving mass of the articles inside the coating pan (1). The perforated hollow bodies (14) have a distal part (14b), which is inclined with respect to the hollow body vertical axis and whose cross-section is oblong with pointed ends.

Abstract: A device moves and orients spraying nozzles (4) inside a coating pan (1). The spraying nozzles (4) are carried, arranged in a line, by a shaft (5), which rotates on a horizontal axis parallel to the axis of the rotating drum (1). The shaft (5) is supported by a support frame (7), which is fastened to a bar (10), which is rotated to adjust the distance between the spraying nozzles (4) and the free surface (20) of said mass of articles (2) being treated. The shaft (5) is fastened to the lever mechanism (16,17) of a positioning member (15) for changing the inclination of the spraying nozzles (4), so as to maintain constant their orientation with respect to said free surface (20) of the mass of articles (2).

Abstract: A drying device for a coating machine equipped with a rotary pan (1), in which the products to be coated are introduced, includes air injecting means (5) for supplying air to dry the products inside the rotary pan (1), and an exhaust air pipe (7), equipped with perforated hollow head pieces which can be removed, adapted to be immersed in a heap of products to be coated. The pipe (7) is supported by sliding means (21) which are moved in a direction longitudinal to the same pipe between a working position, in which the exhaust pipe (7) is operated, and an advanced position, so as to allow maintenance operation on the exhaust pipe (7) performed from outside through the front opening (3a) of the pan (1).