Biobelt seat elbow

The utility model discloses a biobelt seat elbow, the on -line screen storage device comprises a base, install two return bends on the base, wherein install the fitting sleeve on every return bend respectively, set up flutedly on the fitting sleeve, install the tubular metal resonator in the fitting sleeve 3, the internal thread has been seted up on the tubular metal resonator. Thereby reach the effect that makes things convenient for fixed mounting. Two return bends are installed respectively in 15 departments and 45 departments of base. The distribution that makes the return bend is with reasonable. Base and two integrative manufacturings of return bend form. It is more stable with being connected of base to make the return bend. The integrative manufacturing of return bend and fitting sleeve forms. Make elbow fitting's leakproofness better.