| 摘要 |
<p num="1"><br/><br/><br/> An adjustable jet gun for cleaning machine includes a barrel, <br/>a pressure adjustment sleeve fastened to the front end of the barrel <br/>and operable to adjust the pressure of water delivered through the <br/>adjustable jet gun, a support ring sleeved onto the front end of the <br/>pressure adjustment sleeve and holding a steel ball in each of a <br/>number of ball racks around the periphery thereof, a sliding <br/>sleeve sleeved onto the support ring and movable to force the steel <br/>balls out of the inside wall of the support ring, a nozzle head <br/>detachably connected to the front end of the support ring and <br/>having a positioning groove extending around the periphery of a <br/>rear positioning ring thereof for receiving the steel balls to lock <br/>the nozzle head to the support ring.<br/>
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