DEVICE FOR WITHDRAWING LIQUID FROM WELLS Russian patent published in 1998 - IPC

FIELD: water supply technology. SUBSTANCE: this can be used for pipeless operation of artesian wells. Device setup has string of casing pipes, pumping equipment, delivery pipe connection together with supporting washer located on it. Delivery pipe connection can be made for example of polyethylene with possible axial displacement. Fitted over supporting washer is collar made of resilient material with high coefficient of friction and having inner tapered space and outer cylindrical surface. Slots are made in upper part of collar. Tightly fitted over pipe connection is truncated cone which is made of polymeric material with low coefficient of friction. Cable is inserted through flange located on pipe connection, washer and cone. Truncated cone is directed with its top towards collar. Cone of inner space of collar is directed towards truncated cone. Aforesaid embodiment simplifies design of device. EFFECT: higher efficiency. 1 dwg