| 摘要 |
A pulsating spray nozzle is particularly useful in an irrigation lavage for medical or veterinary use in delivering pulsating streams of liquid for cleansing wounds. The spray nozzle is designed to provide a steady operation over a wide range of flow rates. The nozzle comprises a hollow portable housing having an inlet connectable to a source of fluid. The nozzle housing has an end closure member providing an end wall having a plurality of fluid discharge orifices located symmetrically around the longitudinal axis of the housing. A rotary valve member is positioned in the housing for rotation along the surface of the end wall to control flow of liquid through the orifices therein. The rotary valve member comprises an arcuate valve plate supported on and integral with a plurality of radially extending vanes. The valve plate is curved or arcuate in cross-section and has a plurality or radial grooves in the face thereof to permit flow of liquid along said face to permit steady rotation thereof throughout a wide range of flow rates. A removable wall member is positioned in the housing securing said valve member in place and having a plurality of angularly directed holes for directing liquid flow against said vanes to rotate said valve member to effect a pulsating flow of liquid through said orifices. A flow control valve is positioned in the inlet end of said housing and actuated by a handle supported thereon.
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