High-sealing heat-preservation leakage-proof box cover for overflow box of tank container

• Main Author: JI XUEDONG
• Format: Patent
• Language: Chinese; English
• Published: 03.07.2020
• Subjects: BLASTING; CYLINDERS; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; PISTONS; SEALINGS; THERMAL INSULATION IN GENERAL; WEAPONS

The utility model discloses a high-sealing, heat-preservation and leakage-proof box cover of an overflow box of a tank container. The packaging box comprises a box body and a box cover wrapping the top of the box body. A second sealing ring is fixedly connected to the outer side of the top end of the box body, a first sealing ring is fixedly connected to the horizontal center line of the inner side of the box cover, the first sealing ring and the second sealing ring are connected in a clamped mode, a second contact ring is fixedly connected to the upper end face of the box body, and a first contact ring is arranged above the second contact ring. According to the utility model, the structure is simple, the box cover covers the box body; at the moment, the first contact ring at the top of the box body is attached to the bottom of the box cover, and in the downward extrusion process of the box cover, the light spring provides reverse acting force, so that the first contact ring makes contact with the box cover m