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    • 61. 发明授权
    • Variable displacement rotary pump
    • 可变排量旋转泵
    • US08287255B2
    • 2012-10-16
    • US12546438
    • 2009-08-24
    • Hironao YokoiShigeru SuzukiKatsumi YamashitaToshiro Fujii
    • Hironao YokoiShigeru SuzukiKatsumi YamashitaToshiro Fujii
    • F04B49/24
    • F04C11/001F04C14/02F04C14/065F04C14/26F04C2270/58
    • A variable displacement rotary pump includes a main pump unit, an auxiliary pump unit, a discharge passage, a bypass passage, a suction passage, a check valve and a control valve. The suction passage is in communication with the discharge passage through the bypass passage and a second discharge port. The check valve is disposed in the discharge passage for preventing fluid in a first discharge port of the main pump unit from flowing into the bypass passage. The control valve is operable for opening and closing the bypass passage. When the control valve opens the bypass passage and the check valve closes the discharge passage, flow rate of the fluid discharged from the discharge passage is reduced. A throttle passage is provided in the bypass passage or the control valve for regulating flow of the fluid in early phase of operation of the control valve to open the bypass passage.
    • 可变排量旋转泵包括主泵单元,辅助泵单元,排出通道,旁通通道,吸入通道,止回阀和控制阀。 吸入通路与通过旁路通路的排出通路和第二排出口连通。 止回阀设置在排出通道中,用于防止主泵单元的第一排出口中的流体流入旁通通道。 控制阀可操作以打开和关闭旁路通道。 当控制阀打开旁通通道并且止回阀关闭排出通道时,从排出通道排出的流体的流量减小。 在旁通通道或控制阀中设置有节流通道,用于调节控制阀的早期操作中的流体的流动以打开旁路通道。
    • 63. 发明申请
    • Production Process of Glycolide
    • 乙交酯的生产工艺
    • US20110263875A1
    • 2011-10-27
    • US13142012
    • 2009-12-09
    • Shigeru SuzukiKazuyuki YamaneToshihiko OnoKazuhiko Sunagawa
    • Shigeru SuzukiKazuyuki YamaneToshihiko OnoKazuhiko Sunagawa
    • C07D319/12
    • C07D319/12
    • The invention provides a production process of glycolide comprising the respective steps of: Step 1 of heating a mixture containing a glycolic acid oligomer and a high boiling polar organic under normal or reduced pressure to reflux the mixture and at that time, conducting a total reflux operation in a reflux time within a range of 0.1 to 20 hours under conditions that substantially the whole amount of a distillate distilled out of a reflux system containing the mixture is refluxed into the reflux system; Step 2 of heating the mixture after the total reflux operation or a mixture obtained by adding the high boiling polar organic solvent to a glycolic acid oligomer component recovered from the mixture after the total reflux operation to conduct depolymerization; and Step 3 of collecting glycolide from a co-distillate.
    • 本发明提供了一种乙交酯的制备方法,其包括以下各步骤:步骤1,在正常或减压下加热含有乙醇酸低聚物和高沸点极性有机物的混合物以回流混合物,并且此时进行总的回流操作 在从含有该混合物的回流系统蒸馏出的基本上全部量的馏出物回流至回流系统的条件下,在0.1至20小时的范围内的回流时间内, 在全部回流操作之后加热混合物的步骤2或通过在完全回流操作后从混合物中回收的乙醇酸低聚物组分加入高沸点极性有机溶剂而获得的混合物进行解聚; 和从共馏出物收集乙交酯的步骤3。