| 摘要 |
<p>A device for the fireproof sealing of a bushing of a pipe through a building wall, comprising two halves which put together embrace the pipe with a sealing mass, which swells when heated is described. It is especially characterized in that each halve (1,2) is designed with a first wall (3,4), intended to be fastened to the building wall. Each halve is designed with a second wall, with a first portion (5,6) partly rotationally cylindrical with a radius somewhat larger than the embraced pipe (7). The second wall is formed with second and third portions attached to the first portion of the wall, in the form of a first plane portion (8,9) and a second plane portion (10,11) in a common plane parallel to the longitudinal axis of the pipe (7), directed through the centre of the cross section of the pipe. The mass (12) which swells when heated is intended to be placed in the space, that is created when putting the halves together, between the first, second and third portions (5,6,7,8,9,10,11) of the halves, directed towards each other.</p> |
