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    • 13. 发明授权
    • Ultrasonic probe and method for monitoring materials processing in screw driven extruders
    • 超声波探头和用于监控螺杆式挤出机材料加工的方法
    • US06415665B1
    • 2002-07-09
    • US09523931
    • 2000-03-13
    • Robert Snee GilmoreMahari Tjahjadi
    • Robert Snee GilmoreMahari Tjahjadi
    • G01N2918
    • B29C47/92B29C47/0009B29C2947/9259B29C2947/92657B29C2947/92876B29C2947/92885B29C2947/92895
    • An ultrasonic probe and method for noninvasively monitoring materials processing in screw driven extruders. The noninvasive probe includes at least one ultrasonic transducer operable to transmit an ultrasonic signal on a signal path intersecting an inner sidewall of a barrel of the extruder and material between the inner sidewall of the barrel and an outer surface of a screw within the barrel. Information about the state of the material intersected by the ultrasonic signal is ascertainable from an elapsed time between reception of a first reflection of the ultrasonic signal and reception of a second reflection of the ultrasonic signal. The first reflection results when the ultrasonic signal exits the inner sidewall of the barrel and the second reflection results when the ultrasonic signal reaches one of the outer surface of the screw and partially solid material.
    • 一种超声波探头和用于在螺杆驱动挤出机中非侵入性监测材料加工的方法。 无创探测器包括至少一个超声波换能器,其可操作以在与挤出机的筒体的内侧壁相交的信号路径上传送超声波信号,并且在筒体的内侧壁与筒体内的螺杆的外表面之间的材料。 从超声信号的第一反射的接收和超声波信号的第二反射的接收之间的经过时间可以确定与超声信号相交的材料的状态的信息。 当超声波信号离开筒的内侧壁时产生第一反射,并且当超声波信号到达螺钉的外表面和部分固体材料时,产生第二反射。