| 摘要 |
The invented method of weighing loose fractions is characterized in that material of separate fractions is brought from individual dosing means (1) on a running pocket conveyer (2), wherein, at any given moment, material of only one fraction is brought in, and material of the subsequent fraction is started to be brought on the pocket conveyer (2) only after all material of the previous fraction has been brought on the pocket conveyer (2). The material is then transported by the pocket conveyer (2) to a storage bin (4), and after all material of the last fraction has been brought from the dosing means (1) on the pocket conveyer (2), the output opening of the storage bin (4) is opened and the material is emptied into a mixer (6). The delivery of all the material of a given fraction on the pocket conveyer (2) is determined so that the running pocket conveyer (2) with material on the pocket conveyer (2) is being weighed, and in case that a part of the material of a given fraction is already placed in the storage bin (4), an independent weighing of the storage bin (4) is carried out simultaneously with the material in the storage bin (4). From the determined weight data, the moment is determined at which all the material of a given fraction is weighed, and at that moment the supply of material of this fraction from the dosing means (1) on the pocket conveyer (2) is interrupted. The invention also discloses equipment for making the above-described method, the equipment comprising separate dosing means (1) for dispensing material of separate fractions, a pocket conveyer (2), and a storage bin (4) for storing material of the fractions intended for emptying into the mixer (6). The pocket conveyer (2) is connected with a first weighing device (3) and the storage bin (4) is connected with a second weighing device (5). |
