PNEUMATIC SUBMERSIBLE DISPLACEMENT PUMP Russian patent published in 2002 - IPC

FIELD: handling liquid-phase pulps. SUBSTANCE: pump has working chamber, suction and discharge valves, pulse branch pipe and pneumatic pulsator connected to pulse branch and to compressed air delivery and relief branch pipes. Fitted on flange of working chamber is device for opening hole in bottom which is connected with rod; compressed air supply pipe line is brought to delivery branch pipe; sleeve perforated by holes and slots is secured to working chamber bottom from beneath; compressed air supply pipe line, delivery branch pipe and pulsator relief branch pipe are provided with cocks. EFFECT: enhanced operational reliability and continuity of handling process. 6 cl, 2 dwg