| 摘要 |
The invention pertains to a pellet mill 2 for forming pelleted material, the pellet mill 2 comprising: A die 4 having a cylindrical inner surface 6 with a plurality of apertures 8 formed therein and extending to the outside of the die 4, the volume bounded by said inner cylindrical surface 6 defining a die chamber 10. At least two cylindrical rollers 12, 14, 16 adapted to travel over said inner cylindrical surface 6 of the die 4 in a rolling motion. Drive means for causing relative rotation of the die 4 and the rollers 12, 14, 16, so that the rollers 12, 14, 16 will travel over the inner cylindrical surface 6 of the die 4, thereby forming wedge-shaped spaces 18, 20, 22 between the rollers 12, 14, 16 and the inner cylindrical surface 6 of the die 4. A feed system, comprising at least two conduits 24, 26, 28, one associated with each of the at least two rollers 12, 14, 16, extending into the die chamber 10, each of the conduits 24, 26, 28 having a side opening 32 for feeding the pelletizable material 30 into the wedge-shaped spaces 18, 20, 22 between the rollers 12, 14, 16 and the inner cylindrical surface 6 of the die 4, the side opening 32 extending axially along the conduit 24, 26, 28 and having an extension that is equal to the length of the rollers 12, 14, 16, wherein at least one of the conduits 24, 26, 28 is configured for feeding the pelletizable material 30 directly to a wedge-shaped space 22, which is at a higher location in the die chamber than said conduit 28. |
