| 摘要 |
A device for cleaning and/or disinfecting commercial wells consisting of a tubular housing smaller in diameter than the well casing and which is lowered to a location below the liquid level in the well. A resonant diaphragm partition separates the housing into an upper closed chamber and a lower open chamber. Centrally mounted on the upper portion of the diaphragm is a rotational mass which revolves at constant speed and the mass-speed relationship develops sinusoidal vibrations in the low-sonic range and substantially vertical to its diaphragm mount location. The sinusoidal force excites the diaphragm into one of its modes of natural frequency in the form of bending wave motion in the diaphragm. The force, sinusoidal in nature, thus released also excites the housing of the upper and lower chambers and longitudinal bending waves are in turn continuously developed and transmitted through the material of the housing and in a direction through the lower open end portion of the cylindrical housing. The longitudinal bending wave vibrations in the material of the cylindrical housing in turn cause compressional acoustic waves to be transmitted through the surrounding water medium at speeds approximating 4,800 feet per second from both the inner and outer surfaces of the lower open end cylindrical shell, and from the outer surface of the upper closed cylindrical shell. The direction of the released compressional sound waves is perpendicular to surfaces of the cylindrical shell and the waves are multidirectional in nature.
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