JPS62879U

JPS62879U -

Info

Publication number: JPS62879U
Application number: JP9122185U
Authority: JP
Priority date: 1985-06-17
Filing date: 1985-06-17
Publication date: 1987-01-07

Description

[Brief explanation of drawings]

第１図は本考案の縦断面図、第２図は要部の拡
大縦断面図である。１……弁本体、３……弁室、４……弁座、６…
…雌ネジ、７……弁室開口部、８……環状凹溝、
９……弁杆、１０……弁口、１１……弁頭、１２
……雄ネジ、１３……弁杆後端部、１７……後端
面、１８……テーパー部、１９……６角係合孔、
２０……有端リング。 FIG. 1 is a longitudinal sectional view of the present invention, and FIG. 2 is an enlarged longitudinal sectional view of the main parts. 1... Valve body, 3... Valve chamber, 4... Valve seat, 6...
... Female thread, 7 ... Valve chamber opening, 8 ... Annular groove,
9...Bent rod, 10...Bent mouth, 11...Bent head, 12
... Male thread, 13 ... Valve rod rear end, 17 ... Rear end surface, 18 ... Tapered part, 19 ... Hexagonal engagement hole,
20...Ended ring.

Claims

[Scope of utility model registration request]

The valve stem 9, which has a male thread 12 on its outer periphery that is screwed into a female thread 6 provided on the inner wall of the valve chamber 3 of the valve body 1, moves forward and backward within the valve chamber 3, and the valve head at the tip of the valve stem 9 moves forward and backward. 11
In a valve body structure that can open and close the valve port 10 of the valve seat 4 provided in the valve body 1, the valve has a diameter l slightly smaller than the inner diameter of the valve chamber opening 7 that opens at the rear end of the valve body 1. A rod rear end portion 13 is provided at the rear of the valve rod 9, and the outer circumferential surface from the rear half of the valve rod rear end portion 13 to the circular edge forming the rear end surface 17 is a tapered portion 18, and the diameter of the rear end surface 17 is as described above. Diameter l smaller than straight type l
', then this valve rod 9 is screwed into the valve chamber 3 and inserted into the annular groove 8 provided on the inner periphery of the valve chamber 3 approaching the valve chamber opening 7. An end ring 20 made of a steel wire having a cross-sectional area formed with a larger diameter is used to make the inner diameter l'' of the valve rod rear end 13 of the valve rod 9 using its widening effect. is smaller than the diameter l of the tapered part 1
The diameter of the valve chamber opening 7 is adjusted so that the opening diameter of the valve chamber opening 7 is larger than that of the valve rod 9. The opening has a diameter _L1 smaller than the diameter l' at the end of the tapered portion 18 and larger than the diagonal length of the hexagonal engagement hole 19 into which the hexagonal wrench drilled in the rear end surface 17 is inserted and engaged. 1. A valve lever deviation prevention device for an on-off valve, characterized in that it is configured to be able to do so.