Belt weigher capable of preventing material breakage

The invention discloses a belt weigher capable of preventing material breakage. The belt weigher comprises a supporting frame, a belt weigher body and a conveying belt, the belt weigher body is arranged at the top of the inner wall, the conveying belt sleeves the surface of the belt weigher body, fixing blocks are fixedly connected to the front face and the back face of the supporting frame, fixing rods are fixedly connected to the tops of the fixing blocks, and working boxes are movably connected to the interiors of the fixing rods; a scraping plate is movably connected to the bottom of the inner wall of the working box and inclines leftwards, and the scraping plate and the working box are used in cooperation with the conveying belt. The fixing ros and the working box are arranged to be matched with the scraping plate to scrape and level materials, and the problems that in the using process of an existing belt weigher, the materials on a surface conveying belt cannot be leveled, the situation that material c