Anti-vibration spiral protection sleeve

The invention discloses an anti-vibration spiral protection sleeve comprising a flange, a protective sleeve body and a spiral flange. Bolt holes are distributed in the flange in a circumferential direction; a central hole is drilled at the center of the flange; and the protective sleeve body passes through the central hole of the flange. The protective sleeve body is formed by combination of a spiral-flange-free sleeve and a spiral flange sleeve; and the spiral flange is arranged on the outer wall of the spiral flange sleeve spirally. A central drilling hole is formed at the center of the protective sleeve body. According to the anti-vibration spiral protection sleeve based on the reasonable structural design, since vibration of the protective sleeve is mainly caused by the Karman vortex street formed by the medium flowing through the protective sleeve in the rear side, the spiral flange around the protective sleeve can cut off the flow to avoid the obvious Karman vortex street. Because of reduction of the am