| 摘要 |
A pressing or pelletizing device for compacting vegetable materials, in particular grass blades, is disclosed for use specially with a harvester. In order to reduce the pressing forces required for the pelletizing process, the pressing channels are heated up to a temperature above 100 .degree.C, preferably above 150 .degree.C. It bas been demonstrated that by heating the pressing channels, local overheating of tire device, which could otherwise lead to malfunctions, can be avoided. Appropriately, the pelletizing device has two co-axial hollow cylinders (33) in which the pressing channels (51) are delimited by radial lands (39) which alternatively engage the pressing channels (51) of the other hollow cylinder (33). The hollow cylinders (33) are heated by means of a liquid circuit guided through the lands (39) and linked to a heat exchanger that utilizes the lost heat from the internal combustion engine of the harvester. |
