| 摘要 |
<p>A pneumatic sowing and seed discharging system. A sowing roller (5) is driven by a governor motor (6) to rotate around an air sucking and blowing pipe (2). Negative pressure is generated in a suction hole (52) of the sowing roller through an air suction pipe (21). Seeds are adsorbed in a seed box (7). Excessive seeds are blown away from a seed cleaning air blowing hole (32) in a seed cleaning device (3) corresponding to an annular projection (51) on the sowing roller. The adsorbed seeds are blown into a seed shunt hole (41) of a shunt accelerator (4) through an air blowing pipe (22), and are accelerated by an air flow blown out from the shunt accelerator (4) and are discharged to appointed positions through a seed discharging duct (8). A pneumatic seed cleaning device (3) is used to prevent the seeds from being scratched. An outer wall of the sowing roller (5) is wavy, so that only one seed is adsorbed in the suction hole (52) of each sowing roller, the seeds are uniformly discharged and are accelerated by the shunt accelerator (4) to reduce the repeated sowing and sowing leakage phenomena, and the number of sowing rows, sowing line spacing and sowing row spacing can be conveniently adjusted to achieve multi-row work of one machine, and by changing the number of suction holes in each group of sowing rollers, two seeds, three seeds, or multiple seeds are sowed in a hole.</p> |
