VIBRATING COLUMN PUMP

PURPOSE:To obtain a pumping device having simple structure without any revolving part and excellent in resistances for abrasion and corrosion by a method wherein the vibrating column pump is constituted by a vibrating tube, established in water and moving up-and-down, whose upper end is pressed elastically by a valve plate energized by a spring, and these parts are enclosed by a liquid introducing tube. CONSTITUTION:When an oscillator 3 is energized, the output part 4 is moved up-and-down and the vibrating tube is moved up-and-down. In case the vibrating tube 2 is moving downward, the valve plate 9 does not follow it and is delayed to move downward. When the vibrating tube 2 has come to the lower limit thereof, the valve plate 9 overtakes it and a valve sheet 8 is closed. When the vibrating tube 2 is elevated under keeping the sheet 8 closed by the valve plate 9, liquid is elevated together with the tube 2. When the tube is descended, the liquid in the tube does not descended by the inertia thereof. During repeating this motion, the liquid arrives at the upper end of the tube 2 and the liquid overflows into the liquid introducing tube 6 when the tube is descended. The liquid flows toward a discharging port 5 through the tube 6, thereafter, the liquid is discharged continuously by the effect of pumping described above.