| 摘要 |
PURPOSE:To eject water intermittently from an ejecting hole and to elevate washing effect by providing a partition plate provided with a window hole, and an opening and closing plate at the front end of a water passage and a rotary shaft provided with a vane wheel at the hind end of the water passage. CONSTITUTION:In an ejection nozzle for cleaning dirts with high pressure water, etc., an opening of a nozzle hole 7 is closed with a partition plate 10 having an elliptic window hole 10a at the upperly side of the water passage 2, and a bearing 11 is fitted to a central shaft hole; thus, a rotary shaft 12 is installed. Further, a vane wheel 13 is fixed to the external periphery of the hind part of the rotary shaft 12, and an elliptic opening/closing plate 14 having elliptic front shape is fitted to the front external periphery. The window hole 10a of the partition plate 10 is opened or closed by the rotation of the rotary shaft 12. When fluid from a pump is introduced into a casing in this constitution, the opening/closing plate is turned by the rotation of the vane wheel. When the window hole in the partition plate is closed, the fluid is discharged intermittently through the ejection hole.
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