The flange plate and the soft wave conduit are fixed by welding, the four corners of the first flange plate are provided with the first screw hole, and the second flange plate is provided with the second screw hole corresponding to the first screw hole; One side of the first flange is provided with an annular groove; The utility model achieves the purpose of interlocking the two soft wave conduits through the cooperation between the annular protrusion, the annular groove and the adjusting bolt, and the interlocking fixation of the annular protrusion and the annular
groove is more firm through the adjusting bolt. Compared with the traditional fixation method which only uses the flange bolt, the fixation method is more stable, so as to improve the service life.
groove is more firm through the adjusting bolt. Compared with the traditional fixation method which only uses the flange bolt, the fixation method is more stable, so as to improve the service life.