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    • 2. 发明公开
    • 기어 펌프
    • 齿轮泵
    • KR1020070112211A
    • 2007-11-22
    • KR1020077021591
    • 2006-02-17
    • 시마즈멕템가부시기가이샤
    • 오카다,모토히로
    • F04C2/18
    • F04C2/084F04C2/16F04C13/002
    • A gear pump (100) suitable for feeding a high pressure and high viscosity fluid such as a molten resin, installed in a casing (1), and capable of feeding the fluid from a suction port (11) side to a discharge port (12) side by the rotation of gears (2) and (3) formed in a pair and meshing with each other. The gears (2) and (3) are formed in double helical gears with one-point continuous contact tooth profile and the ratios of the outer diameters D to the tooth widths B of the gears (2) and (3) are set to 1.1 to 1.15. When the ratio D/B is equal to or lower than 1.1, a bearing load is excessively increased and a bearing may be damaged. Therefore, the gear pump becomes unsuitable for feeding the molten resin. On the other hand, when the ratio D/B surpasses 1.15, a mechanical efficiency is lowered and, accordingly, the total efficiency is lowered according to an increase in the overall size of the pump.
    • 一种齿轮泵(100),其适于供给安装在壳体(1)中的能够将流体从吸入口(11)侧输送到排出口(12)的高压和高粘度流体(例如熔融树脂) )侧通过一对形成的齿轮(2)和(3)的旋转而彼此啮合。 齿轮(2)和(3)形成为具有一点连续接触齿形的双斜齿轮,齿轮(2)和(3)的外径D与齿宽B的比率设定为1.1 至1.15。 当比率D / B等于或低于1.1时,轴承载荷过大,轴承可能受损。 因此,齿轮泵变得不适于供给熔融树脂。 另一方面,当比D / B超过1.15时,机械效率降低,因此根据泵的整体尺寸的增加总的效率降低。