| 摘要 |
<p>A pellet durability tester is provided which establishes the durability of manufactured pellets by subjecting them to circulation in a closed air re-circulation path and estalishing the weight ratio of whole pellets in the sample before and after testing. The tester comprises a cabinet (3) divided by an internal partition (7) into two compartments. One of these compartments, (6) constitutes part of the re-circulation path. The pellets to be tested are introduced into the other compartment at its top and, in one embodiment, pass over a sieve (17) to remove lose material from the whole pellets so that only the whole pellets are deposited into a container (13) whose weight can be measured automatically. This container (13) tips the pellet sample into the compartment (6) for circulation around the re-circulation path. The re-circulation path also includes a swivel head (5) which can direct the re-circulated air and material either into the compartment (6) at back to the sieve (17) so that the loose material is removed and the remaining whole pellets are received in the container (13) for weighing. In a further embodiment, the tester may include means for at least partly drying the pellet sample prior to weighing by blowing air over it.</p> |
