JPH0320771U

JPH0320771U -

Info

Publication number: JPH0320771U
Application number: JP8014189U
Authority: JP
Priority date: 1989-07-10
Filing date: 1989-07-10
Publication date: 1991-02-28
Also published as: JPH0434296Y2

Description

[Brief explanation of drawings]

第１図から第１２図までの図面はこの考案の一
実施例を示すものであり、第１図はガスコツクの
縦断面図、第２図はこの考案の要旨である過流出
防止弁の縦断面図、第３図は第２図矢視図、第
４図は安全弁の正面図、第５図は第４図矢視図
、第６図は第４図矢視図、第７図は下流側支持
リングの平面図、第８図は第７図−断面図、
第９図は上流側支持リングの平面図、第１０図は
第９図−断面図、第１１図、第１２図は安全
弁の作動途中を示す概略正面図である。１０……過流出防止弁、１１……ケーシング、
１１ｃ……ガス通路、１１ｅ……弁座、１２……
安全弁、１２ａ……シヤフト部、１２ｂ……シー
ル部、１２ｄ，１２ｅ……案内突起、１３，１４
……支持リング、１４ｅ……挿通孔。 The drawings from Fig. 1 to Fig. 12 show one embodiment of this invention. Fig. 1 is a longitudinal cross-sectional view of a gas tank, and Fig. 2 is a longitudinal cross-section of an overflow prevention valve, which is the gist of this invention. Figure 3 is a view from the arrow in Figure 2, Figure 4 is a front view of the safety valve, Figure 5 is a view from the arrow in Figure 4, Figure 6 is a view from the arrow in Figure 4, and Figure 7 is the downstream side. A plan view of the support ring, FIG. 8 is a cross-sectional view of FIG.
FIG. 9 is a plan view of the upstream support ring, FIG. 10 is a sectional view of FIG. 9, and FIGS. 11 and 12 are schematic front views showing the safety valve in the middle of operation. 10... Overflow prevention valve, 11... Casing,
11c...Gas passage, 11e...Valve seat, 12...
Safety valve, 12a...Shaft part, 12b...Seal part, 12d, 12e...Guiding protrusion, 13, 14
...Support ring, 14e...Insertion hole.

Claims

[Claim for Utility Model Registration] Consists of a casing having a gas passage inside and a safety valve movably housed in the gas passage of the casing, and usually the safety valve is located from a valve seat provided in the gas passage. In the overflow prevention valve, which separates and allows gas to flow, and when the gas flows in an overflow state, the safety valve seats on the valve seat and blocks the gas flow, the safety valve is connected to the shaft part and the valve of the casing. The safety valve is supported movably in the axial direction of the gas passage by inserting the shaft part into a pair of front and rear support rings provided in the gas passage of the casing. The shaft portion of the safety valve is partially circumferentially inserted into the portion through which one of the support rings is inserted, and the dimension of the shaft portion protruding outward in the radial direction is gradually increased as one approaches the rear of the shaft portion. A guide protrusion is provided which increases the protrusion dimension and then gradually reduces the protrusion dimension again, and the inner diameter of the insertion hole for the shaft portion of the one support ring is slightly larger than the sum of the protrusion dimension of the guide protrusion and the outer diameter of the shaft portion. An overflow prevention valve characterized by: