| 摘要 |
The utility model provides a set up in the keeper (HD) of the perforating hole in the next door of operation machinery, it can make and become easy and can guarantee higher leakproofness to the operation that the through-hole inserted the restiform bodies of inserting formed at liner (20). Keeper (HD) possesses the mounting that is equipped with the restiform bodies and inserts the liner of through-hole (20) and be fixed in liner (20) in the next door. It extends and arrives this restiform bodies and insert the slope joint-cutting of through-hole (26A, 26B) with the orientation of cutting that the axial quadrature of through-hole was inserted to the restiform bodies to be formed with this lateral surface edge of follow at liner (20). Slope joint-cutting (26A, 26B) lies in the part of the both sides of the joint-cutting that should slope (26A, 26B) in with liner (20) and breaks off each other to observe the axial slope of inserting the through-hole for the restiform bodies from the above-mentioned direction of cutting into. |
