Perfections in gas pumps with liquid rings of various steps (Machine-translation by Google Translate, not legally binding)

摘要

Improvements introduced in the main patent object characterized by a liquid ring gas pump, in which only the cooling liquid is fed from the outside, while the closing, filling and blocking liquids are extracted from the pump itself, as specified in the main patent, but in execution of one several steps, further characterized in that the liquid for the closure of the grooves existing laterally on the blade wheels (sealing fluid) is extracted from the ring of rolling liquid of the corresponding step . (Machine-translation by Google Translate, not legally binding)