JPH0427285U

JPH0427285U -

Info

Publication number: JPH0427285U
Application number: JP6826490U
Authority: JP
Priority date: 1990-06-27
Filing date: 1990-06-27
Publication date: 1992-03-04

Description

[Brief explanation of the drawing]

第１図は本考案の実施例を示す通常使用状態の
断面図、第２図は火災発生時にピストンが下降し
た状態を示す第１図のＡ−Ａ断面、第３図は従来
技術を示す断面図である。１……防火区画壁、５……防火遮断治具、６…
…配管、７……ピストン、８……火薬、５３……
下剛性本体、５４……上剛性本体、７１……ロツ
クリング、７２……切刀。 Figure 1 is a cross-sectional view of the embodiment of the present invention in normal use, Figure 2 is a cross-section taken along line A-A in Figure 1, showing the state in which the piston is lowered in the event of a fire, and Figure 3 is a cross-sectional view of the prior art. It is a diagram. 1...Fire prevention partition wall, 5...Fire prevention isolation jig, 6...
...Piping, 7...Piston, 8...Gunpowder, 53...
Lower rigid body, 54... Upper rigid body, 71... Lock ring, 72... Cutting knife.

Claims

[Scope of Claim for Utility Model Registration] A piston chamber inside, a gunpowder chamber at the upper end of the piston chamber, an insertion opening for piping passing orthogonally through the lower part of the piston chamber on both sides, and a piston around the periphery of the piston chamber. a rigid body provided with a concave groove that fits into a lock ring attached to the outer periphery of the piston when pressed downward; a cutting blade for cutting the pipe on the lower end surface attached to the piston chamber of the rigid body; and a radial direction on the outer periphery. A fire prevention shut-off jig consisting of a piston having a locking ring that expands to the main body, a gunpowder filled in the gunpowder chamber of the rigid body, and a fuse led from the gunpowder to both sides of the rigid body is attached to a pipe through hole in the wall. A fireproof wall penetrating piping structure, characterized in that the piping is inserted through the insertion opening of the rigid main body.