为了防止提钻拧卸立根时泥浆喷溅,我队设计、使用了一种防喷接头,经七个多月的实践,效果良好,深受机场同志们的欢迎。一、构造及工作原理构造如图所示。接头体用(?)68钻铤加工制成,上部车成(?)56锁接头母扣,内腔为(?)40的活塞室,中部 In order to prevent the drilling mud from splashing and removing the grout, our team designed and used a spray-proof joint. After more than seven months of practice, it worked well and was very popular with airport comrades. First, the structure and working principle Construction shown. Joint body (?) 68 drill collar made of the upper car into (?) 56 lock female buckle, the cavity is (?) 40 of the piston chamber, the middle