JPS61119665U

JPS61119665U -

Info

Publication number: JPS61119665U
Application number: JP342885U
Authority: JP
Priority date: 1985-01-14
Filing date: 1985-01-14
Publication date: 1986-07-28
Also published as: JPH0228298Y2

Description

[Brief explanation of the drawing]

第１図は本考案の１実施例に係る閉弁状態示断
面図、第２図は第１図における要部の開弁状態示
断面図、第３図は従来の弁における断面図、第４
図は同じく開弁状態を示す部分図である。３……弁室、４……弁座、８……弁室開口部、
９……環状凹溝、１０……弁杆、１１……弁体、
１４……弁杆後端部、１５……弁杆後端寄り部、
１６……エツジ部、１７……有端リング。 FIG. 1 is a sectional view showing a valve in a closed state according to an embodiment of the present invention, FIG. 2 is a sectional view showing main parts in an open state in FIG. 1, FIG. 3 is a sectional view of a conventional valve,
The figure is also a partial view showing the valve open state. 3... Valve chamber, 4... Valve seat, 8... Valve chamber opening,
9... Annular groove, 10... Valve rod, 11... Valve body,
14...Rear end of the valve rod, 15...Rear end of the valve rod,
16... Edge part, 17... Ended ring.

Claims

[Scope of utility model registration request]

A valve rod 10 is screwed into the valve chamber 3, and is located behind the rear end surface of the valve rod 10 and at the valve chamber opening 8.
An annular groove 9 provided on the inner periphery of the valve chamber 3 at a position close to
Then, an end ring 17 having a circular cross section is inserted using its expansion force so that the inner diameter of the ring is smaller than the outer diameter at the rear of the valve rod 10,
By screwing the valve rod 10 forward and backward within the stroke until it comes into contact with the end ring 17,
In the lift valve in which the valve seat 4 can be closed and opened by the valve body 11 at the tip of the valve rod 10, the valve rod 10 has the following features:
The rear portion of the valve rod has a smaller diameter than the adjacent valve rod rear end portion 15, and the rear end edge of the valve rod rear end portion 15 and the rear of the valve rod rear end portion 14. The peripheral surface between the end ring 17 and the end ring 17 is formed into a stepped structure with a curved surface having a larger curvature than the cross-sectional radius of the end ring 17 or a right-angled stepped surface. The rear end edge is formed into an edge portion 16 that passes through the center of the end ring 17 and can contact the end ring 17 only linearly at a position inside the cylindrical surface parallel to the axis of the valve rod 10. A lift valve characterized by: