Seed distribution method and apparatus

A - Human Necessities – 01 – C

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A01C 7/04 (2006.01) A01C 7/20 (2006.01)

Patent

CA 2534794

A seeding apparatus comprising: (a) seed distribution metering means including a rotating drum (1) with apertures on its periphery and a vacuum generator for generating a suction pressure inside the drum (1)so that seeds are attracted to the apertures; (b) feeding system including a hopper (31), gravitational acceleration chamber (47), velocity controlling elements such as a flap (38) and continuous belts (41) for feeding seeds at a required amount and speed to the drum (1); (c) release mechanisms including an airjet (19) for releasing metered seeds from the drum (1) along a selected trajectory (15) while unselected seeds follow another trajectory (16). (d) delivery means including an adjustable flow venturi (62) and electronic sensor (66) for controlling delivery of metered seeds.

L'invention concerne un dispositif de semis comprenant (a) un moyen de dosage de distribution de graines comprenant un tambour rotatif (1) qui présente des ouvertures en périphérie et un générateur de vide pour produire une pression d'aspiration à l'intérieur du tambour (1), de sorte que des graines soient attirées vers les ouvertures ; (b) un système d'alimentation comprenant une trémie (31), une chambre d'accélération gravitationnelle (47), des éléments de régulation de la vitesses, tels qu'un volet (38) et des bandes continues (41) pour alimenter le tambour (1) en graines, en quantité voulue et à la vitesse désirée ; (c) un mécanisme de dégagement comprenant un jet d'air (19) pour libérer les graines dosées, hors du tambour (19), le long d'une trajectoire (15) retenue, les graines non sélectionnées suivant une autre trajectoire (16) ; (d) un moyen de distribution comprenant un tube de Venturi de débit (62) ajustable et un capteur électronique (66) pour réguler la distribution des graines dosées.

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