JPH01122569U

JPH01122569U -

Info

Publication number: JPH01122569U
Application number: JP1873188U
Authority: JP
Priority date: 1988-02-17
Filing date: 1988-02-17
Publication date: 1989-08-21

Description

[Brief explanation of the drawing]

第１図は本考案のバルブのボデーの一実施例を
示すボールバルブの縦断面図、第２図は第１図の
ボールバルブのボデーのねじ込み結合部を示す部
分拡大断面図、第３図はボデーのねじ込み結合部
の他の実施例を示す部分拡大断面図であり、第４
図は分割部をねじ込み結合したバルブの従来の構
造を示す部分拡大断面図である。２……ボデー、２ａ，２ｂ，２ｃ……ボデーの
部分、３ａ，３ｂ……ねじ込み結合部、４……お
ねじ側、５……めねじ側、６……おねじ、７……
円筒外面、８……先端面、９……短円筒外面、１
０，１０ａ……環状平面、１１……外側段部、１
２……めねじ、１３……円筒内面、１４……当接
面、１５，１５ａ……環状端面、１６，１６ａ…
…環状空間、１７……内側段部、１８，１８ａ…
…環状ガスケツト。 FIG. 1 is a vertical cross-sectional view of a ball valve showing an embodiment of the valve body of the present invention, FIG. 2 is a partially enlarged cross-sectional view showing a threaded joint of the ball valve body of FIG. 1, and FIG. FIG. 4 is a partially enlarged cross-sectional view showing another example of the screw joint portion of the body;
The figure is a partially enlarged sectional view showing the conventional structure of a valve in which divided parts are screwed together. 2...Body, 2a, 2b, 2c...Body part, 3a, 3b...Threaded joint, 4...Male thread side, 5...Female thread side, 6...Male thread, 7...
Cylindrical outer surface, 8... Tip surface, 9... Short cylindrical outer surface, 1
0, 10a... Annular plane, 11... Outer step, 1
2... Female thread, 13... Cylindrical inner surface, 14... Contact surface, 15, 15a... Annular end surface, 16, 16a...
...Annular space, 17...Inner step, 18, 18a...
...Annular gasket.

Claims

[Scope of Claim for Utility Model Registration] (1) A valve body that is divided into two or more parts and the divided parts are screwed together, and the male thread side of this threaded joint part has a male thread and a distal end from the male thread. a cylindrical outer surface provided on the side, a tip end surface provided at the tip of the cylindrical outer surface at right angles to the cylindrical outer surface, a short cylindrical outer surface provided at the base of the male thread, and an annular plane provided at right angles to the short cylindrical outer surface. and an outer stepped portion formed by the threaded joint, and the female thread side of the threaded joint has a female thread that is screwed into the male thread, and a cylindrical inner surface that fits into the cylindrical outer surface;
an abutting surface that abuts and seals the tip surface; an annular end surface that faces the annular plane with a slight gap; and an annular end surface with a rectangular cross section that is provided on the inner diameter side of the annular end surface and faces the outer step. A valve body comprising an inner step forming a space, and an annular gasket attached to the annular space. (2) A valve body that is divided into two or more parts and the divided parts are screwed together, and the male thread side of the threaded joint part has a male thread and a cylindrical outer surface provided on the tip side of the male thread, an outer stepped portion formed by a tip end surface provided at a right angle to the cylindrical outer surface at the tip of the cylindrical outer surface, a short cylindrical outer surface provided at the base of the male thread, and an annular flat surface provided at right angles to the short cylindrical outer surface; The female thread side of the threaded joint includes a female thread that is screwed into the male thread, and a cylindrical inner surface that fits into the cylindrical outer surface.
Consisting of a contact surface that contacts and seals the tip surface, and an annular end surface that faces the annular plane with a slight gap, a stepped annular space with a rectangular cross section is formed on the inner diameter side of the annular plane. and a valve body in which an annular gasket is installed in the annular space.