JPS61172271U

JPS61172271U -

Info

Publication number: JPS61172271U
Application number: JP5550585U
Authority: JP
Priority date: 1985-04-16
Filing date: 1985-04-16
Publication date: 1986-10-25

Description

[Brief explanation of drawings]

第１図は本考案の一実施例を示す断面図、第２
図は第１図の要部を示す拡大断面図、第３図及び
第４図は従来例を示す断面図である。図中、１０はタンク、１２はタンクの開口部、
１３は弁箱、１７は弁座、２０はフロート、Ａは
第１の息つき通路、Ｂは第２の息つき通路である
。 Fig. 1 is a sectional view showing one embodiment of the present invention;
The figure is an enlarged sectional view showing the main part of FIG. 1, and FIGS. 3 and 4 are sectional views showing a conventional example. In the figure, 10 is a tank, 12 is an opening of the tank,
13 is a valve box, 17 is a valve seat, 20 is a float, A is a first breathing passage, and B is a second breathing passage.

Claims

[Scope of Claim for Utility Model Registration] (1) A valve seat that is seated at the opening of a tank and forms a first breathing passage, a float valve that opens and closes the passage in accordance with the movement of the tank, and the float valve. means for forming a second breathing passage by separating the valve seat and the opening when the passage is closed;
A float valve device comprising: a valve box that covers the opening and is detached including the valve seat to open the tank when the temperature of the tank exceeds an allowable temperature. (2) The means is provided along the opening on which the valve seat is seated, and when the inside of the tank becomes negative pressure, the means bends toward the inside of the tank to separate the valve seat and the opening. a seal ring forming a breathing passage; and a seal ring that urges the valve seat to seat in the opening and compresses when the inside of the tank exceeds a predetermined positive pressure to separate the valve seat from the opening. and a resilient member forming the second breathing passage. (3) The valve box is installed over the opening of the tank so as to cover the valve seat, and when the temperature exceeds the allowable high temperature of the tank, the valve box melts and becomes disconnected. The float valve device according to claim 1, wherein a heat-fusible sealing member is interposed. (4) A housing in which the valve box is joined to the opening of the tank, a lid removably provided on the upper part of the housing to open the housing, and a space between the lid and the housing. The float valve device according to claim 1 or 3, further comprising the thermofusible sealing member provided for joining.