FIELD: engines and pumps.
SUBSTANCE: proposed pump comprises main constant-diametre hose with no notable irregularities on its outer surface to be lowered into the well and furnished with tight cover with two branch pipes on the hose top end that is arranged on the surface. One branch pipe makes air inlet or outlet depending upon working cycle, i.e. aspiration or repulsion. It is connected, via appropriate valves, in turns with vacuum pump that generates vacuum inside pump dual hose to facilitate draining and with compressor to facilitate repulsion by compressed air pressure that forces water via inner hose and branch pipe outward via water removal hose. Another branch pipe, also arranged on aforesaid tight cover, comprises check valve that allows water to rise in inner hose into repulsion phase. Main hose lower end that is downed to well bottom incorporates return valve, filter and anti-impact element that protects the filter and doubles as a ram to pass through possible obstacles. Water flows through return valve into main hose in aspiration phase but it does no enter the repulsion phase. In this vase the sole outlet for water repulsed by compressed air is the inner hose via second branch pipe.
EFFECT: simplified design, higher efficiency.
2 cl, 3 dwg
