Material spraying equipment

The utility model relates to the technical field of sewage treatment, and discloses material spraying equipment which comprises a feeding device, a negative pressure device and a spraying device, and the feeding device is used for inputting materials; the negative pressure device is connected with the feeding device and used for outputting materials. The spraying device is connected with the negative pressure device and used for providing spraying power. Various particles needing to sink to the bottom rapidly are continuously and stably fed into the negative pressure device through the feeding device, materials are jetted into rivers and lakes from the shore through the jetting device, particle materials with the diameter of 2-20 mm can be jetted by 1-10 m, and it is basically guaranteed that during operation on most rivers and lakes, the particle materials with the diameter of 2-20 mm are not prone to sinking to the bottom rapidly. The particle materials are thrown from the bank and uniformly paved on the su