Vortex water discharge type mute drainage pipe

The utility model discloses a vortex water discharge type mute drainage pipe. The vortex water discharge type mute drainage pipe comprises a drainage pipe body, wherein 6-18 flow guide spiral ribs are uniformly distributed on the inner wall of the drainage pipe body; the flow guide spiral ribs are provided with outwards convex arc rebound surfaces and inwards concave arc interference surfaces; the spiral angle of the flow guide spiral ribs is 3 degrees to 12 degrees; the spiral rib width is 3-12mm; the spiral rib height is 2-8.5mm; the arc radius of the rebound surfaces from the cross section view vertical to the normal direction of the spiral ribs is 2-8mm; the arc radius of the interference surfaces from the cross section view vertical to the normal direction of the spiral ribs is 7-22mm. According to the vortex water discharge type mute drainage pipe, the structure and the quantity of the internal spiral ribs are optimized, the drainage noise is effectively reduced, the intensity of the drainage pipe is in