Fire-retardant ring

The utility model discloses a fire-retardant ring, and aims to provide a fire-retardant ring which can effectively protect fire-retardant materials inside the fire-retardant ring and guarantee the fire-retardant materials to normally play a role in time. According to the scheme, the fire-retardant r...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	HUANG JIAN, DU ZHONGWU, QIAN BAOZHE, TAN FUYUN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING JOINTS OR FITTINGS FOR PIPES LIGHTING MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING PIPES SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	The utility model discloses a fire-retardant ring, and aims to provide a fire-retardant ring which can effectively protect fire-retardant materials inside the fire-retardant ring and guarantee the fire-retardant materials to normally play a role in time. According to the scheme, the fire-retardant ring is characterized in that the fire-retardant ring comprises an outer shell and an expansion material placed in the outer shell, the outer shell is composed of a lateral shell body, a cover plate and a base plate, a heat insulation layer is arranged between the outer shell and the expansion material, sealing materials are arranged between the expansion material and the cover plate and between the expansion material and the base plate respectively, the cover plate and the base plate are respectively provided with an annular clamping claw, the annular clamping claws are connected with rigid polyvinyl chloride pipes in an abutting mode, the annular clamping claws comprise a plurality of claw teeth, a notch is formed