| 摘要 |
PURPOSE: An air blaster is provided to set up KWIC valve by including the function of the KWIC valve for its own and in which it has no to be troublesome. CONSTITUTION: A backflow preventer is mounted to the cylinder (130). The air which the air tank is charged is leaked in charge from the accommodation space (134). The air ejected from the air tank to the air discharge pipe may not be inflowed to the accommodation space in exhaustion. The rapid exhaust unit is mounted to cylinder. The air moving from the air-supply hose to the accommodation space is passed through in charge. The air of the accommodation space is exhausted with the outside of cylinder in exhaustion. The cover (152) comprises the hollow (154) and the bottom groove (156) prepared in the hollow outlet surrounding. The umbrella valve (158) passes the hollow air in the bottom groove in the charge. The air of the bottom groove may not be passed in the hollow in the exhaustion. In cylinder, the through hole (142) communicating the bottom groove and accommodation space and the exhaust duct (144) opened and closed with the umbrella valve are prepared. The exit of the guideway (136) is shut tightly to the guideline with the pressure of the air in which the opening/closing plate (138b) is ejected from the air tank to the air discharge pipe.
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