Bale opener for opening bales made of flax or hemp and other renewable raw materials

摘要

The bale breaker has a horizontal feed table (1) with a continuous conveyor (2), and another continuous conveyor for the take-in which is angled downwards at the 15-25 degrees to the horizontal and preferably 20 degrees . It leads to a fork-shaped separator (6) for foreign bodies together with seeds and broken awns. A continuous needle belt (7) has a rising belt level at 90 degrees to the take-in table, with leveling rakes (8,9) across its width which move on an elliptical movement with the main axis parallel to the direction of needle conveyor travel. The downwards level of the needle belt moves past a stripping roller (10). The separator (6) can swing away upwards, against spring pressure and gravity, on a horizontal axis (6.1) at a gap from the needle belt. The leveling rakes (8,9) have a stroke movement length of 400-600 mm towards the main axis of the ellipse, and pref. 500 mm, and a stroke length of 180-220 mm on the side axis, and preferably 200 mm. The leveling rakes (8,9) are in succession on the direction of needle belt (7) movement. A housing (4) has at least one dust extraction channel (12), behind a beating plate (13) for carried fiber material within the housing (4). A conveyor assembly (11) is under the separator (6), which has at least the width of the needle belt (7). The needle belt (7) has needle bars over its width, at intervals of 50-70 mm and preferably 60 mm, or 60-180 mm and preferably 120 mm. The belt (7) may be fitted with needles in a height of 25-35 mm. The needles are at an angle of about 45 degrees . The gap is variable between the rakes (8,9) and the needle belt (7).