| 摘要 |
A material sampling device comprises an auger, a first motor, and a rotatable tube assembly. The auger is configured to extract material from a container. The first motor is configured to rotate the auger. The rotatable tube assembly comprises an outer tube and a second motor. The outer tube is configured to allow the auger to rotate within the outer tube. The outer tube comprises an upper portion configured to remain stationary, and a lower portion configured to rotate. The second motor is configured to rotate the lower portion of the outer tube. In a second embodiment, a material sampling device comprises an auger, and a rotatable tube assembly. The rotatable tube assembly comprises an outer tube comprising an upper portion configured to remain stationary and a lower portion configured to rotate. The auger and the lower portion of the outer tube are configured to rotate simultaneously in opposite directions. |
