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Fixed manner of the expansion and contraction section in the spray rod of the sprayer and the joint nut
Fixed manner of the expansion and contraction section in the spray rod of the sprayer and the joint nut
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机译:喷雾器喷杆和接头螺母中伸缩段的固定方式
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摘要
PROBLEM TO BE SOLVED: To configure a fixing means so that an operation of extending a spray pipe for extending the travel distance of a chemical agent to be blown out of a nozzle at a front end of the spray pipe can be performed only by pulling out an extension pipe relative to a main pipe without rotating operation of a fastening nut during spraying operation, and the extension pipe is prevented from dropping out of a core cylinder even when the chemical agent is supplied to the spray pipe at high pressure.SOLUTION: A pressure receiving surface z for receiving the pressure of the chemical agent supplied into the spray pipe is formed on the rear end side of the core cylinder 5 having a cone-like fastening cylindrical portion 5a having a slit provided along the axial direction on the front end side, the core cylinder being slidably fitted to the extension pipe 2. The core cylinder 5 is pushed to a slide lock member 7 fixed to a main pipe 1 by the pressure of the chemical agent supplied into the spray pipe to perform fastening operation.
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