| 摘要 |
PROBLEM TO BE SOLVED: To facilitate the screwing and the drawing-out by providing at least one pair of squeezing recessed parts on a circumferential surface at an arbitrary position of a stud bolt, and providing an insertion hole of the inside diameter larger than the outside diameter of a bolt projecting part in a packing holder. SOLUTION: A plurality of gland packings 4 are stored in a storage part 3 of a stuffing box 2, and a packing holder 5 is fitted to an opening side. A stud bolt 7 is inserted in an insertion hole 5b in the packing holder 5, and an insertion side end part of the bolt 7 is slightly engaged with a screw hole 2b of a box 2. A recessed part 7d of the bolt 7 is located between the box 2 and the packing holder 5, a turning tool 11 is engaged with the recessed part 7d to turn the bolt in the screwing direction, and the screwing quantity is regulated by a projecting part 7e of the bolt 7. A tightening nut 8 is fitted to the bolt 7, and turned by the turning tool 11 in the screwing direction, and the packing 4 is pressed by the packing holder 5 in the axial direction. The bolt is drawn by turning the bolt in the unscrewing direction by the turning tool 11. Parts are small in number, and the assembly/disassembly can be facilitated. |
