JPS6263474U

JPS6263474U -

Info

Publication number: JPS6263474U
Application number: JP15438785U
Authority: JP
Priority date: 1985-10-11
Filing date: 1985-10-11
Publication date: 1987-04-20

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す２枚弁体スイ
ング機構付急閉逆止弁の断面図、第２図は従来の
１枚弁体スイング機構付逆止弁の断面図、第３図
は現在実用化されている２枚弁体スイング機構付
急閉逆止弁の断面図である。２１…弁箱、２２ａ，２２ｂ…弁体、２３…弁
棒、２４…弁座、２６ａ，２６ｂ…コイルばね、
２８…仕切板、３０…突起部。 Fig. 1 is a sectional view of a quick-closing check valve with a two-disc swing mechanism showing an embodiment of the present invention; Fig. 2 is a sectional view of a conventional check valve with a single-disc swing mechanism; The figure is a sectional view of a quick-closing check valve with a two-piece valve body swing mechanism that is currently in practical use. 21...Valve box, 22a, 22b...Valve body, 23...Valve stem, 24...Valve seat, 26a, 26b...Coil spring,
28...Partition plate, 30...Protrusion.

Claims

[Claims for Utility Model Registration] 1. The valve body is composed of two valve bodies that each swing around the valve stem as a fulcrum, and the valve is activated by these two valve bodies by the reaction force of a coil spring. In a check valve whose seat part is closed, a partition plate constituting the valve seat part is housed in a valve box so that it can be freely installed, and a hinge part provided at both ends of a valve stem to support the valve stem,
A quick-closing check valve with a two-piece valve body swing mechanism, characterized in that it is attached to the above-mentioned partition plate. 2. The quick-close check valve with a two-piece valve body swing mechanism according to claim 1, wherein the inner surface of the valve box has a streamlined cross-sectional shape at the upper part of the partition plate. 3 Two of the coil springs are provided so as to correspond to each valve body using the valve stem as a guide rod, and one end of each coil spring acts on the central part of the back surface of the respective valve body, and the other end acts on the central part of the back surface of the respective valve body. The two-piece valve body according to claim 1 of the utility model registration claim, which is engaged with both protrusions that protrude from both sides parallel to the valve shaft and have the role of regulating the opening angle of the body to a constant value. Quick-close check valve with swing mechanism. 4. The two-piece valve body swing mechanism according to claim 3, wherein the other ends of the coil springs are respectively locked so as to fit into grooves provided at the ends of the projections. Quick-close check valve.