NEW TYPE OF TURNOVER LIFT FOOT VALVE
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United States of America Patent
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Dec 5, 2017
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Dec 13, 2016
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Abstract
A new type of turnover lift foot valve, including valve body, opening mechanism, valve core, guide mechanism and recovery mechanism; the valve body is set with two guide mechanisms, which are symmetrical and on both sides of valve core. The guide mechanism is provided with main guide rod at one end and with guide groove; there is side guide rod extending into the guide groove; the side guide rod is provided with bearing sleeve. The recovery mechanism includes spring and spring cage, the spring is set between valve core and spring cage; the spring cage is connected to the guide mechanism. Guide groove of the foot valve is in arc shape, so that valve core can deviate from the right above of valve opening and fluid cannot flow into valve body not only from the side of valve opening but also from the right above, which increases flow rate, improves working efficiency and solves the problems of traditional lift foot valve that flow rate is small and unloading is slow due to blockage by valve core.
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