Novel built -in slips formula oil well packing adjusting nut

The utility model provides a novel built -in slips formula oil well packing adjusting nut, body, polished rod mouth, screens boss, screw, kelly, slips, its the novel built -in slips formula oil well packing adjusting nut body be cylindrically barrel -shaped structure, body upper portion is hexagonal platform form, the axle center position is equipped with the circular polished rod mouth that the diameter slightly is greater than the polished rod diameter, both ends symmetry that the lower part is equipped with the internal thread about, is equipped with a set of round platform form screens boss, boss axle center position is equipped with the screw, spherical dop that the kelly was equipped with passes the screw, and is the draw -in groove that frustum form half -circular arc slips was equipped with and cooperatees. The utility model has the advantages of adjust with the dual function of uninstallation, not only reduced construction operation, still reduced safe risk, have simple structure, easy and simple to