Seed centering distribution system

A - Human Necessities – 01 – C

Patent

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A01C 7/20 (2006.01)

Patent

CA 2111611

For use with an air seeder for distribution of seed to a agricultural implement by pneumatic conveyance is a unique seed-centering and distribution system. The primary conveyance tube which is adapted to receive metered amounts of fertilizer and/or seed or granular herbicide is equipped with a plurality of internal sloped annular rings as well as a series of internal baffles. The internal baffles are particularly adapted for dividing the seed stream through a right angled turn from the horizontal to the vertical. The sloped annular rings project further into the conveyance tube on their downstream side than on the upstream side. Interestingly enough, it has been found that much less power is required to center and evenly distribute the seed with this device than the prior art devices. Moreover, damage to delicate seed is greatly reduced.

La présente invention a pour objet un dispositif de centrage et de distribution des graines pour semoir pneumatique. Le tube d'adduction primaire, qui est conçu pour recevoir des quantités mesurées de fertilisants, de graines ou d'herbicides granulaires, est doté d'une pluralité d'éléments annulaires inclinés vers l'intérieur et associés à une série de chicanes. Les chicanes en question sont spécialement conçues pour imposer un virage à angle droit au flux granuleux et transformer l'écoulement horizontal en écoulement vertical. Les bords inférieurs des éléments annulaires inclinés vers l'intérieur se prolongent plus loin à l'intérieur du tube d'adduction que leurs bords supérieurs. Fait digne de remarque est que le dispositif décrit dans les présentes requiert beaucoup moins d'énergie que les dispositifs de conception antérieure pour effectuer le centrage et la distribution uniforme des graines. De plus, l'utilisation du dispositif en question entraîne une diminution très considérable des dommages causés aux graines.

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