JPH01154370U

JPH01154370U -

Info

Publication number: JPH01154370U
Application number: JP5167788U
Authority: JP
Priority date: 1988-04-19
Filing date: 1988-04-19
Publication date: 1989-10-24

Description

[Brief explanation of the drawing]

第１図は第１の本考案の実施例に係るシートリ
ングを有するバタフライバルブの一実施例を示す
縦断面図、第２図は第１図に示すシートリングの
一実施例を示す右半部を縦断面した正面図、第３
図及び第４図はそれぞれ第２図のＡ―Ａ断面又は
Ｂ―Ｂ断面を示す部分横断面図、第５図は第２の
本考案のシートリングの一実施例を示す部分横断
面図であり、第６図乃至第８図はそれぞれバタフ
ライバルブのシートリングの従来例を示す部分断
面図である。１……バタフライバルブ、２……ボデー、２ａ
……内周面、３……シートリング、４……ジスク
、５……ステム、６……基部、６ａ……分割離間
部、６ｂ……内周面、６ｃ，６ｄ……両側面、７
……弾性体部。 FIG. 1 is a longitudinal sectional view showing an embodiment of a butterfly valve having a seat ring according to the first embodiment of the present invention, and FIG. 2 is a right half showing an embodiment of the seat ring shown in FIG. Front view taken in longitudinal section, 3rd
4 and 4 are partial cross-sectional views showing the AA section or B-B cross section of FIG. 2, respectively, and FIG. 5 is a partial cross-sectional view showing an embodiment of the seat ring of the second invention. 6 to 8 are partial sectional views showing conventional examples of seat rings of butterfly valves. 1...Butterfly valve, 2...Body, 2a
...Inner circumferential surface, 3... Seat ring, 4... Disk, 5... Stem, 6... Base, 6a... Division spacing part, 6b... Inner circumferential surface, 6c, 6d... Both sides, 7
...Elastic body part.

Claims

[Claims for Utility Model Registration] (1) An annular body, an annular seat ring attached to the inner peripheral surface of the body, a disk disposed inside the seat ring, and the disk cannot be rotated in the diametrical direction. The seat ring of a butterfly valve is composed of a stem that penetrates through the body and the seat ring in a diametrically rotatable manner, and is opened and closed by rotating the stem and rotating the disc, the seat ring comprising: A substantially annular synthetic resin base having a diametrical separation part perpendicular to the axis of the stem, and a rubber elastic body part that is adhered to the inner peripheral surface and both side surfaces of the base and fills the separation part. A seat ring for a butterfly valve. (2) Claim 1, wherein the base is made of phenolic resin.
Seat ring for the butterfly valve listed. (3) The seat ring for a butterfly valve according to claim 1, wherein the base is made of phenolic resin compounded with rubber. (4) The seat ring for a butterfly valve according to any one of claims 1 to 3, wherein the elastic body portion is simultaneously vulcanized and molded onto the base portion. (5) An annular body, an annular seat ring attached to the inner circumferential surface of the body, a disk disposed inside the seat ring, and a ring that non-rotatably passes through the disk in the diametrical direction and connects the body and the seat. The seat ring of a butterfly valve consists of a stem that freely rotates through the ring in the diametrical direction, and is opened and closed by rotating the stem and turning the disk, and the seat ring is made of synthetic resin mixed with rubber. A seat ring for a butterfly valve consisting of an annular base and rubber elastic body parts adhered to the inner peripheral surface and both sides of the base. (6) The seat ring for a butterfly valve according to claim 5, wherein the base is made of phenolic resin mixed with rubber. (7) The seat ring for a butterfly valve according to claim 5 or 6, which is manufactured by simultaneously vulcanizing and molding the elastic body portion onto the base portion.