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    • 91. 发明专利
    • Vacuum pump
    • 真空泵
    • JPS61142375A
    • 1986-06-30
    • JP26421684
    • 1984-12-14
    • Nec Corp
    • NARUTOMI YASUO
    • F04B37/20
    • PURPOSE: To prevent clogging of oil suction port with dust in oil by separating the interior of casing into exhaust port side and oil suction port side through a partition board while arranging an oil filter unit for feeding oil from the exhaust port side to the oil suction port side.
      CONSTITUTION: A partition board 2 is arranged in a casing 1 to partition the interior completely into the exhaust port 3 side and the oil suction port 4 side. Oil mixed with dust discharged through the exhaust port 3 is prevented to flow directly to the oil suction port 4 side and both spaces is coupled through an oil filter unit 6 while holding the partition board 2. Consequently, the oil 5 at the exhaust port 3 side is filtered through the oil filter unit 6 to catch the dust contained in the oil thus to feed only clean oil to the oil suction port 4 side. As a result, the dust will never clogg the oil suction port 4 to maintain stable operation of vacuum pump for long time.
      COPYRIGHT: (C)1986,JPO&Japio
    • 目的:为了防止油吸入口堵塞油中的灰尘,将机壳内部通过分隔板分隔成排气口侧和吸油口侧,同时布置用于将油从排气口侧供给到吸油口的滤油器单元 左舷。 构成:将隔板2配置在壳体1内,将内部完全分隔成排气口3侧和吸油口4侧。 与通过排气口3排出的灰尘混合的油被阻止直接流到吸油口4侧,并且两个空间通过油过滤器单元6联接,同时保持隔板2.因此,排气口3处的油5 侧通过油过滤器单元6过滤以捕获容纳在油中的灰尘,从而仅将清洁的油仅供入到吸油口4侧。 结果,灰尘永远不会堵塞吸油口4,以保持真空泵长期稳定运行。