DEVICE FOR WATER SUPPLY FROM WELL Russian patent published in 1999 - IPC

FIELD: water supply systems. SUBSTANCE: relates to devices for supplying artesian water to trunk lines of municipal water supply systems. Device has pressure pipeline located inside casing pipe, multiple-section pump with immersible electric motor, and hydraulic sealing unit installed in pressure pipeline below static water level in well. Hydraulic sealing unit is provided with locking mechanism and is made up of upper supporting flange and lower supporting flange of pressure pipeline. Located between supporting flanges and coaxially with pressure pipeline is float. Mounted on external side wall of float is lower edge of first sealing member. Pivotally connected to upper edge of first sealing member are movable axles of gates in gate mechanisms. Stationary axles of gates are connected to upper supporting flange. Links of gate mechanisms are rigidly connected with end face of float. Secured on it are rods of locking mechanisms adapted for reciprocal motion within vertically oriented through-holes of upper supporting flange. Each rod has single recess for balls of locking mechanisms which are provided with pressure springs. Every single of them is seated in horizontally oriented holes of upper supporting flange. Holes are made at side of casing pipe walls. Upper end face of lower supporting flange of diameter which exceeds internal diameter of float is provided with second sealing member. Aforesaid embodiment of water supply device provides reliable sealing between walls of pressure pipeline and casing pipe of well. EFFECT: higher efficiency. 3 dwg