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    • 2. 发明授权
    • 스치로폴예비발포입자의 비중제어장치
    • 用于预先选择的苯乙烯颗粒的特定重量控制方法
    • KR1019910008000B1
    • 1991-10-05
    • KR1019890011011
    • 1989-08-01
    • 효성바스프 주식회사
    • 정태규
    • B29C67/20
    • The device for controlling specific gravity (SG) of the prefoamed particle, has an auto gravimeter (A) for measuring SG of samples regularly collected by collecting means; an gravity controller (B) for comparing the digitized measuring value with the setting value, calculating deviation from values, converting it to analog signal, changing RPM of motor for driving a raw- material feed screw. The collecting means includes a feed system (24) for feeding the sampling particles, having a vacuum pump (40) ; sample discharging tube (41) and photoelectric sensor (42). The gravimeter (A) includes a digital scale (21), a measuring container (22) with the scale (21) and locking means, a scraper (23) horizontally reciprocated by supporting/driving means.
    • 用于控制预发泡颗粒的比重(SG)的装置具有用于测量通过收集装置定期收集的样品的SG的自动重力仪(A) 重力控制器(B),用于将数字化测量值与设定值进行比较,计算与值的偏差,将其转换为模拟信号,改变驱动原料进给螺杆的电机的RPM。 收集装置包括用于供给采样颗粒的进料系统(24),其具有真空泵(40); 样品放电管(41)和光电传感器(42)。 重力仪(A)包括数字刻度(21),具有刻度(21)和锁定装置的测量容器(22),通过支撑/驱动装置水平往复运动的刮刀(23)。