| 摘要 |
A metering system to meter particulate material at varying rates from a storage source such as a hopper to a transport and distribution system including a pneumatic transport system, for example in an agricultural distribution machine such as a seed drilling apparatus, and to an agricultural distribution machine such as a seed drilling apparatus incorporating such a metering system. The metering system includes a metering channel (25) defining an inlet to receive particulate material from a storage source in use and an outlet to pass particulate material in use to a pneumatic transport system and has a centreless screw conveyor (27) received within the metering channel (25) to convey particulate material from the inlet to the outlet in a controlled manner. |
