FIELD: water lifting from wells. SUBSTANCE: pump magnetic circuit consists of three parts: two cylindrical cores placed one into the other with circular clearance and with coil placed in between, and third core which is yoke. Armature and yoke are made of electrical steel laminations in form of plates. Central core of magnetic circuit has axial hole to pass rod coupling diaphragm installed in lower cover of housing, armature, shock absorber and piston. Inlet valve and outlet branch pipe are installed in housing upper cover. EFFECT: enhanced performance characteristics of pump owing to effective use of magnetic field energy. 1 dwg
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