| 摘要 |
PROBLEM TO BE SOLVED: To provide asphalt supply equipment for an asphalt plant, which prevents a bad influence on the quality of an asphalt mixture by reducing the mixing of different kinds of asphalt to the utmost in the switching of the use of the asphalt tank . SOLUTION: A main supply pipe 2 for supplying the asphalt from the asphalt tanks A, B and C is installed, and a pump 3, which can be freely turned in normal and reverse directions, is arranged in the supply pipe 2. Take-out pipes 4a, 4b and 4c of the asphalt tanks each are made close to the vicinity of the upstream side of the pump 3 via direction switching valves 5a and 5b, so as to be connected thereto, and return piping 6a, 6b and 6c of the asphalt tanks is connected to the downstream side of the pump 3 via direction switching valves 7a, 7b and 7c. Though the asphalt of the different kinds in a range of Z shown in Fig. at the maximum is mixed in the switching of the use of the asphalt tanks, the quantity of the asphalt is extremely small. COPYRIGHT: (C)2004,JPO&NCIPI
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