Environment-friendly pipeline outer wall rust removal equipment for building

The environment-friendly pipeline outer wall rust removal equipment for the building specifically comprises a rust removal liquid box, a rust removal device installed in the middle of the inner walls of the two sides of the rust removal box and an inner pressing device installed at the top of a rectangular box body and located on the outer side of a through hole, and the rust removal device comprises a fixing rod, a first fixing rod and a second fixing rod; the rust removal device comprises a rotating ring rod, rust removal brush plates mounted on the two sides of the inner surface of the rotating ring rod, hinge plates mounted on the sides, close to the rotating ring rod, of the rust removal brush plates, and inertia heavy balls mounted in the middles of the sides, away from the rust removal brush plates, of the hinge plates. Through the arrangement of a page plate and an inertia heavy ball, the gravity center position of a rust removal brush plate is changed, inertia continuous support is provided for rotat