FIELD: machine engineering.
SUBSTANCE: valve is intended for use in mine and tubular wells for adjusting liquid flows when it is lifted by a body immersed in water according to an upward displacement method. The valve has a shut-off element installed for moving a water lift inside the body, a seat for fitting of shut-off element, a limiter of the shut-off element movement secured by means of a threaded bushing. The shut-off element is made in form of a horizontal cover connected with the movement limiter by means of a vertical stand passing through a hole in the bottom of water lift body. The movement limiter is perforated to pass liquid and exceeds the diameter of the hole, through which the stand passes. The diameter of the shut-off element cover is 0.8…0.98 of inner diameter of a water lift channel. The valve is closed due to overpressure in the water lift body and is opened by the hydrostatic pressure in the water basin.
EFFECT: improved reliability.
1 dwg
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