| 摘要 |
For transforming straw into being applicable for feeding purposes it is known to inject ammonia into straw bales by means of a number of injector spears (8, 16) on a spear head (2), which preferably is placed on the front loader of a tractor, the tractor being equipped with an ammonia tank (20) and a dosage equipment. The spears should be placed such that the ammonia be spread fairly homogeneously in the bale, but for this as well as for the actual dosage it presents a complication that in practice quite a number of different types of bales are handled. By the invention one and the same equipment can be used for such different bales as the spears (8) are placed fixably displaceably on the spear head (2) such that they are easily adaptable to another size and/or form of bale, and the front loader is equipped with a weighing device in the form of a pressure transducer (26), which measures the weight of the bale and thereby via the control equipment determines the dosage. Instead of relying on a timing control use is made of a flow gauge (30) which measures out the correct dosage relative the weight whereby the dosage becomes correct despite any occurring variations in flow or outlet resistance at the spears (8, 16). |
