| 摘要 |
<p>An underground water pumping device capable of effectively performing a water collecting/water pumping operations with a relatively simple structure and effectively utilizing an existing deep well device, comprising an outer tube buried in the ground and an inner tube having a length generally equal to that of the outer tube and disposed in the outer tube through a clearance provided therebetween, a shielding member for shielding the upper end part of the outer tube from the upper end part of the inner tube, a decompressing means for reducing a pressure in the inner tube, and a pumping means for pumping up the underground water came from the underground water inlet into the inner tube, the outer tube further comprises a water passing part at the lower part thereof and the inner tube further comprises an underground water inlet at the lower end part thereof, wherein the underwater inlet is positioned under the upper end part of the water passing part.</p> |
