A wall cable plug

Abstract

The invention relates to the technical field of power safety and discloses a wall cable sealing member, which comprises a fireproof bushing with an inflatable sealing bag coiled therein; wherein the opening of the fireproof bushing is sleeved with an annular stopping column capable of covering a hole to be sealed; a screw hole is disposed on the stopping column in the circumferential direction; asealing cover is disposed outside the stopping column and comprises a cover plate and an extension column; the sealing cover is provided with a through hole penetrating through the cover plate and theextension column; a plurality of grooves are circumferentially disposed on the side wall of the stopping column; an elastic member is fixed in the groove; an engagement block is fixed to the free endof the elastic member and has an isosceles trapezoidal cross section; and an engagement slot is disposed on a position where the cover plate and the engagement block are opposite to each other. The wall cable sealing member, by the cooperative use of the fireproof bushing and the sealing cover, seals the through-wall hole for passing the cable. The inflatable sealing bag and an inflatable airbagcan densely seal the through-wall hole and cannot be cracked or leaked by external force. The wall cable sealing member can achieve a fireproof, waterproof, anti-seepage and insect prevention purposeeffectively.

Description

technical field [0001] The invention relates to the technical field of electric power safety, in particular to a wall cable sealing piece. Background technique [0002] In recent years, with the rapid development of power cable construction, cable ducts are densely distributed underground in cities and in building walls. Before burying the cable inside the wall, it is necessary to open a hole through the wall. In order to prevent small animals from entering the hole to bite the cable, rainwater seeping into the hole or causing a fire accident due to the cable body or the cable being ignited by an external fire source, then It is necessary to take effective fire prevention and sealing measures for the holes. [0003] In the waterproof sealing process of cable duct wall holes, the inflatable cable duct sealing method is the most commonly used sealing method, which uses the principle of inflatable duct sealing bag inflation to realize the sealing function of the pipeline cable...

AI Technical Summary

Problems solved by technology

However, the current inflatable cable duct sealing device only uses an inflatable sealing bag to wrap the cable directly into the hole for inflation, and there are no other sealing measures, which causes the inflatable sealing bag to leak directly at the hole, making the inflatable sealing bag The bag is easy to break and leak under the action of external force, and loses the sealing effect

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