JPH0317478U - - Google Patents
Info
- Publication number
- JPH0317478U JPH0317478U JP7837989U JP7837989U JPH0317478U JP H0317478 U JPH0317478 U JP H0317478U JP 7837989 U JP7837989 U JP 7837989U JP 7837989 U JP7837989 U JP 7837989U JP H0317478 U JPH0317478 U JP H0317478U
- Authority
- JP
- Japan
- Prior art keywords
- seat ring
- boss
- butterfly valve
- contact surface
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 241001272720 Medialuna californiensis Species 0.000 claims 1
- 239000013013 elastic material Substances 0.000 claims 1
Landscapes
- Lift Valve (AREA)
Description
第1図は本考案のバタフライバルブの一実施例
を示す半截斜視図であり、第2図A乃至Dは、第
1図に示したバタフライバルブのシートリングの
ボス部接触面の実施態様を示すボデーに装着した
シートリングの部分斜視図であり、第3図A乃至
Dは、夫々第2図A乃至Dに示したシートリング
のボス部接触面及びこれに圧接するステム軸のボ
ス部を示す縦断面図である。又第5図は、従来の
バタフライバルブのジスク及びシートリングを示
す部分斜視図であり、第6図及び第7図は、従来
の他のバタフライバルブのシートリングを示す部
分斜視図及びジスクを示す側面図である。
1……シートリング、1a……突条、2……ボ
ス部接触面、3……ボデー、4……弁軸孔、5…
…ジスク、5a……ボス部、5b……端面、5c
……外周縁、6……ステム軸。
FIG. 1 is a half-cut perspective view showing an embodiment of the butterfly valve of the present invention, and FIGS. 2A to 2D show embodiments of the boss contact surface of the seat ring of the butterfly valve shown in FIG. FIG. 3 is a partial perspective view of the seat ring attached to the body, and FIGS. 3A to 3D show the boss contact surface of the seat ring shown in FIGS. 2A to D, respectively, and the boss of the stem shaft that presses against the contact surface of the seat ring. FIG. Further, FIG. 5 is a partial perspective view showing a disk and a seat ring of a conventional butterfly valve, and FIGS. 6 and 7 are a partial perspective view showing a seat ring and a disk of another conventional butterfly valve. FIG. DESCRIPTION OF SYMBOLS 1...Seat ring, 1a...Protrusion, 2...Boss contact surface, 3...Body, 4...Valve shaft hole, 5...
...Disc, 5a...Boss part, 5b...End face, 5c
...Outer periphery, 6...Stem axis.
補正 平1.9.21
図面の簡単な説明を次のように補正する。
明細書の第13頁11行目「ス部を示す縦断面
図である。」とある記載を「ス部を示す縦断面図
、第4図は第1図に示したシートリングの突条及
びこれに圧接するジスクの外周縁を示す縦断面図
である。」と補正する。Amendment September 21, 1999 The brief description of the drawing is amended as follows. On page 13, line 11 of the specification, the statement ``This is a vertical cross-sectional view showing the square section.'' was replaced with ``A vertical cross-sectional view showing the square section. FIG.
Claims (1)
環状シートリングを装着し、該ボデー及び該シー
トリングの直径方向対向位置に設けた弁軸孔に円
板状ジスクの直径位置に装着したステム軸を回転
自在に軸装し、該ステム軸を回転操作し該ジスク
を回動させて開・閉弁を行なうバタフライバルブ
であつて、該ジスクの外周縁を該ステム軸を装着
するボス部の端面を含めて一つの球面の部分をな
すように形成し、該シートリングの該シートリン
グの該ボス部の端面に圧接するボス部接触面を除
く内周面に半径方向内方に突出し円周方向に延び
る断面ほぼ半月状の突条を形成し、該ボス部接触
面を該突条よりも半径方向内方に非球状面形状に
形成したことを特徴とするバタフライバルブ。 (2) 該シートリングの該ボス部接触面を、該シ
ートリングの該弁軸孔寄りの内側部を平面形状に
し、外側部を円錐面形状にした請求項1記載のバ
タフライバルブ。 (3) 該シートリングの該ボス部接触面を、平面
形状にした請求項1記載のバタフライバルブ。 (4) 該シートリングの該ボス部接触面を、該シ
ートリングの該弁軸孔の孔縁から連続する円錐面
形状にした請求項1記載のバタフライバルブ。 (5) 該シートリングの該ボス部接触面を、該シ
ートリングの該弁軸孔寄りの内側部と外側部とを
異なる円錐面形状にした請求項1記載のバタフラ
イバルブ。[Claims for Utility Model Registration] (1) An annular seat ring made of an elastic material is attached to the inner circumferential surface of an annular body, and a disc is inserted into the valve stem hole provided at a position diametrically opposed to the body and the seat ring. A butterfly valve is a butterfly valve in which a stem shaft is rotatably mounted at the diameter of a shaped disc, and the stem shaft is rotated to rotate the disc to open and close the valve. An inner circumferential surface of the seat ring excluding the boss contact surface that is in pressure contact with the end surface of the boss of the seat ring, which is formed to form one spherical surface including the end surface of the boss on which the stem shaft is attached. A protrusion protruding radially inward and extending circumferentially and having an approximately half-moon cross section is formed on the boss, and the contact surface of the boss portion is formed in an aspherical shape radially inward from the protrusion. butterfly valve. (2) The butterfly valve according to claim 1, wherein the boss portion contacting surface of the seat ring has a planar inner portion near the valve stem hole and a conical outer portion. (3) The butterfly valve according to claim 1, wherein the boss portion contact surface of the seat ring has a planar shape. (4) The butterfly valve according to claim 1, wherein the boss contact surface of the seat ring has a conical shape continuous from the edge of the valve shaft hole of the seat ring. (5) The butterfly valve according to claim 1, wherein the contact surface of the boss portion of the seat ring has a different conical shape on the inner side and the outer side of the seat ring closer to the valve stem hole.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1989078379U JP2536479Y2 (en) | 1989-07-04 | 1989-07-04 | Butterfly valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1989078379U JP2536479Y2 (en) | 1989-07-04 | 1989-07-04 | Butterfly valve |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0317478U true JPH0317478U (en) | 1991-02-21 |
JP2536479Y2 JP2536479Y2 (en) | 1997-05-21 |
Family
ID=31621606
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1989078379U Expired - Fee Related JP2536479Y2 (en) | 1989-07-04 | 1989-07-04 | Butterfly valve |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2536479Y2 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5230600U (en) * | 1975-08-26 | 1977-03-03 | ||
JPS614773U (en) * | 1984-06-13 | 1986-01-13 | 日丸産業株式会社 | wax applicator |
JPS6420576U (en) * | 1987-07-28 | 1989-02-01 |
-
1989
- 1989-07-04 JP JP1989078379U patent/JP2536479Y2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5230600U (en) * | 1975-08-26 | 1977-03-03 | ||
JPS614773U (en) * | 1984-06-13 | 1986-01-13 | 日丸産業株式会社 | wax applicator |
JPS6420576U (en) * | 1987-07-28 | 1989-02-01 |
Also Published As
Publication number | Publication date |
---|---|
JP2536479Y2 (en) | 1997-05-21 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |