Rust removal spraying equipment

The rust removal spraying equipment comprises a base and a box body component, the base is supported by universal wheels and used for supporting the box body component and walking in the length direction of an object to be derusted, and a sand collecting hopper is fixed to the bottom of the base; the box body component comprises a box body, an opening is formed in the side, facing a to-be-derusted object, of the box body, the box body is fixedly connected with a sand blasting head, and the sand blasting head derusts the to-be-derusted object through the opening; and rust-removed waste materials enter the sand collecting hopper from the bottom of the box body and are discharged. The moving function of the spraying equipment is achieved through the movable base, and the spraying equipment is particularly suitable for long objects to be derusted such as on-service steel guardrails on the roadside. In addition, the box body with the opening is utilized, the sand blasting head conducts rust removal on the to-be-de