潜孔钻机气接头的结构如图1所示。当压缩空气从送风管进入气接头体内,再通过8个直径20毫米的孔进入空心轴和钻杆中,为冲击器连续作业提供工作动力。作业过程中,常出现A处漏气,俗称托盘漏气。其原因是轴套1太短,第一道V型密封正好在轴套1的倒角上,这样密封即无法紧贴在轴套上,又容易损坏,由于第一道“V”型密封失去作用,第二道密封就不能单独承受压 DTH drill air connector structure shown in Figure 1. When the compressed air from the air supply pipe into the body, and then through the 20 holes 20 mm diameter into the hollow shaft and drill pipe, the impactor for continuous operation to provide work force. During the operation, there often appear A place leak, commonly known as tray leaks. The reason is that the sleeve 1 is too short, the first V-type seal is just chamfered on the sleeve 1, so that the seal can not close the sleeve, but also easily damaged, as the first “V” type of seal is lost Role, the second seal can not withstand pressure alone