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    • 32. 发明专利
    • CONDUIT LINE TESTING DEVICE FOR RUBBER TUBE
    • JPS5674677A
    • 1981-06-20
    • JP15225479
    • 1979-11-24
    • SUMITOMO RUBBER IND
    • FUJII MASAMI
    • G01N19/00G01V9/00
    • PURPOSE:To execute a rubber tube opening and closing degree test swiftly and safely, by connecting the ball receiving part, the ball sending part, the ball sending conduit line and the ball returning conduit line. CONSTITUTION:The ball returning conduit line 21 is connected to the ball receiving part 1 consisting of a hard transparent plastic cylindrical body 2 with the upper and lower cover bodies 3, 4, also the ball sending part 5 consisting of a metalic columnar body 6 with the upper rotary plate 6a is connected through the communicating passage 9, and the ball sending conduit line 22 and the admission conduit line 27 with the switch valve 28 are connected to the ball sending part 5. In this way, the pressure air supply source is started after both the ends of the rubber tube 25 to be tested have been connected to the rubber tube connecting ports 23, 24, plural pieces of small balls 20 contained in the hard transparent plastic cylindrical body 2 are inserted into the ball sending part 5, are inserted into the rubber tube 25 to be tested, through the ball sending conduit line 22, and after that, when they are collected through the ball returning conduit line 21, the opening and closing degree test of the rubber tube 25 to be tested can be executed swiftly and safely.