| 摘要 |
PROBLEM TO BE SOLVED: To provide a measuring technique for measuring the particle size distribution of a particulate material, capable of continously and accurately measuring the particle size and particle size distribution of sand by a simple technique. SOLUTION: The particle size distrubition measuring apparatus is constituted of a means for measuring the amount of the particulate material during falling, a means for measuring the particle size of the particulate material during falling and an arithmetic processing part for calculating the particle size distribution of sand on the basis of the measuring data of both means. The means for measuring the amount of the particulate material comprises a pressure receiving plate 31 against which a particulate material group impinges and a sensor 33 for measuring the surface pressure of the particulate material group impinging against the pressure receiving plate 31. The means for measuring the particle size of the particulate material comprises a vibration receiver 34 vebrated by the impingement of the particulate material group and a sensor 35 for measuring the vibration of the vibration receiver 34. COPYRIGHT: (C)2005,JPO&NCIPI
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