| 摘要 |
The invention concerns an agricultural machine, especially a sowing machine for sowing or spreading of granula and/or powdered material, comprising a container (3) for the material, a dosing arrangement (7) and a distribution arrangement (17) connected thereto, which is arranged to distribute the material to flexible tubes (4) which are connected to harrow tines (5), sowing shares or distribution nozzles, whereby the distribution arrangement comprises a chamber with at least one inlet opening (18) from the dosing arrangement and a plurality of first outlet openings (28), which are connected to said tubes. At least one second outlet opening (36), which is arranged in said distribution arrangement, connects said distribution chamber with said container for recirculation of the material. Closing flaps (26, 26', 26", 44, 51, 63) are arranged in order to selectively close at least one of the first outlet openings at the same time as at least one corresponding second outlet opening is arranged to be opened completely or partly. |
