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公开(公告)号:US4749925A
公开(公告)日:1988-06-07
申请号:US587623
申请日:1984-03-08
申请人: Earle H. Wilkins
发明人: Earle H. Wilkins
IPC分类号: F04B49/025 , G05D9/12 , F04B49/06
CPC分类号: G05D9/12 , F04B49/025
摘要: A device to control an electric well pump motor to pump continuously so long as there is liquid available to be pumped from the well. Whenever there is insufficient liquid to be pumped, the device causes shut-off of the electric pump motor. When liquid again becomes sufficiently available, the device causes pumping operations to resume. Liquid availability conditions are examined by the device at periodic intervals. The device comprises an adjustable variable-area-orifice restricted section in a liquid passage conduit, a pressure switch, a timer, an electric motor, and a motor control switch.
摘要翻译: 只要有可从井中泵出的液体,控制电动井泵马达连续泵送的装置。 每当没有足够的液体被泵送时,该装置导致电动泵马达的关闭。 当液体再次变得足够可用时,该装置使泵送操作恢复。 液体可用性条件由设备以周期性间隔进行检查。 该装置包括在液体通道导管中的可调节可变面积孔限制部分,压力开关,定时器,电动马达和马达控制开关。
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公开(公告)号:US3498504A
公开(公告)日:1970-03-03
申请号:US3498504D
申请日:1968-11-15
申请人: EARLE H WILKINS
发明人: WILKINS EARLE H
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