JPH0258174U

JPH0258174U -

Info

Publication number: JPH0258174U
Application number: JP13666588U
Authority: JP
Priority date: 1988-10-21
Filing date: 1988-10-21
Publication date: 1990-04-26

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図及び第２図は本考案の第１及び第２の両
実施例を示す弁体芯金の各正面図、第３図及び第
４図は本考案の第３及び第４の両実施例を示す弁
体芯金の各平面図、第５図は弁体と弁棒接合部の
要部断面図、第６図は第２図の―線による要
部断面図、第７図は第１図の―線による要部
断面図、第８図は従来例を示す弁体芯金の正面図
、第９図は第８図の―線による要部断面図、
第１０図は第８図の弁体と弁棒接合部の要部断面
図である。１…弁体、１ａ…弁体エツジ部、１ｂ…軸シー
ル部、１ｃ…芯金の端面、２…芯金、３…弁棒、
４…ライニング材、１１，１２…溝、２１，２２
…穴。 1 and 2 are front views of the valve body core bar showing both the first and second embodiments of the present invention, and FIGS. 3 and 4 show both the third and fourth embodiments of the present invention. Each plan view of the valve body core showing an example, FIG. 5 is a sectional view of the main part of the valve body and valve stem joint, FIG. 6 is a sectional view of the main part taken along the line - in FIG. 2, and FIG. FIG. 8 is a front view of a valve body core showing a conventional example; FIG. 9 is a sectional view of essential parts taken along line - in FIG. 8;
FIG. 10 is a sectional view of a main part of the valve body and valve stem joint portion of FIG. 8. DESCRIPTION OF SYMBOLS 1... Valve body, 1a... Valve body edge part, 1b... Shaft seal part, 1c... End surface of core metal, 2... Core metal, 3... Valve stem,
4... Lining material, 11, 12... Groove, 21, 22
…hole.

Claims

【実用新案登録請求の範囲】１弁体の芯金を樹脂等のライニング材で被覆し
たライニング弁体を備えたバタフライ弁において
、上記弁体の芯金の表面に、ライニング材に発生
した応力を吸収する穴又は溝を設けたことを特徴
とするバタフライ弁の弁体。２弁体の芯金の表面に、弁体エツジ部にほぼ平
行に、ライニング材に発生した応力を吸収する溝
又は多数の穴を設けたことを特徴とする請求項１
記載のバタフライ弁の弁体。３弁棒と接合される弁体端部の芯金の端面に、
弁棒と同心状にライニング材に発生した応力を吸
収する溝又は多数の穴を設けたことを特徴とする
請求項１又は２記載のバタフライ弁の弁体。[Scope of Claim for Utility Model Registration] 1. In a butterfly valve equipped with a lining valve body in which the core metal of the valve body is covered with a lining material such as resin, the stress generated in the lining material is applied to the surface of the core metal of the valve body. A valve body for a butterfly valve characterized by having a hole or groove for absorption. 2. Claim 1, wherein a groove or a large number of holes are provided on the surface of the core metal of the valve body, substantially parallel to the edge of the valve body, to absorb stress generated in the lining material.
Valve body of the butterfly valve described. 3. On the end surface of the core metal at the end of the valve body that is joined to the valve stem,
3. The valve body for a butterfly valve according to claim 1, further comprising a groove or a plurality of holes provided in the lining material concentrically with the valve stem to absorb stress generated in the lining material.