LIQUID SPRAY NOZZLE

PROBLEM TO BE SOLVED: To provide a liquid spray nozzle which includes a valve, of which a valve element comes close to and separates from a valve seat by changing a screwing amount of a nipple to a socket of a pipe joint included in an operation rod, inside the operation rod, and switches a spray pa...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: IMAGAWA YOSHINARI, IKEGUCHI AKIHIRO
Format: Patent
Sprache:eng ; jpn
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Beschreibung
Zusammenfassung:PROBLEM TO BE SOLVED: To provide a liquid spray nozzle which includes a valve, of which a valve element comes close to and separates from a valve seat by changing a screwing amount of a nipple to a socket of a pipe joint included in an operation rod, inside the operation rod, and switches a spray pattern in jetting an agent or the like fron a spray head on a tip end of the operation rod by the valve, and can prevent accidental fluctuation of the spray pattern.SOLUTION: A liquid spray nozzle 1 as an object to be improved includes a latch 6, which maintains a relative rotation position of a socket 5a and a nipple 5b of a pipe joint 5, between them. The latch 6 includes: a ring-shaped member 6a which is incorporated so as to slide axially inside the socket 5a and not to rotate; a spring 6b which biases the ring-shaped member to a nipple 5b side; a plurality of recessed parts 6c arranged at a constant pitch in a circumferential direction on an end surface of the ring-shaped member; and a projected part 6d arranged on an end surface of the nipple 5b. The projected part 6d is fitted to the recessed part 6c. 【課題】操作杆に含ませた管継手のソケットに対するニップルのねじ込み量を変化させることで弁体が弁座に対して接離するバルブを操作杆の内部に有し、そのバルブによって操作杆の先端の噴霧ヘッドから薬剤などを噴出させる際の噴霧パターンを切り替える構造の液体散布ノズルを、噴霧パターンの意図せぬ変動が防止されるものにすることを課題としている。【解決手段】上記構造の液体散布ノズル1を改善の対象にして管継手5のソケット5aとニップル5bとの間に、その両者の相対回転位置を保持するラッチ6を設けた。そのラッチ6はソケット5aの内部に軸方向スライド可能、かつ、回転不可に組み込むリング状部材6aと、そのリング状部材をニップル5b側に向けて付勢するスプリング6bと、リング状部材の端面に周方向に定ピッチで複数個設ける凹部6cと、ニップル5bの端面に設ける凸部6dとで構成し、凸部6dが凹部6cに嵌り込むようにした。【選択図】図1