A self-cutting pump with venturi tube inserted in an auxiliary closed circuit. (Machine-translation by Google Translate, not legally binding)

摘要

A self-priming pump with venturi tube inserted in an auxiliary closed circuit, particularly for water wells, constituted by a pump body, inside which is disposed an impeller, set in rotation by an electric motor, characterized in that the mouth The suction and the outlet mouth are both arranged on the upper wall of the pump body and, furthermore, because the suction mouth communicates with the inlet mouth to the rotor, by means of a venturi tube at the center of which narrowing a nozzle introduces water under pressure, coming from the pump's impulsion chamber, thus resulting in the formation of a closed circuit comprising the rotor, the impulsion chamber, the nozzle and the venturi tube, and generating a depression in the inlet of the venturi tube that communicates to the suction mouth. (Machine-translation by Google Translate, not legally binding)