Material spreading device suitable for belt weigher

A material spreading device suitable for a belt weigher comprises a side baffle, a screening mechanism, a material scraping piece, a CPU and a pulverizer. The number of the side baffles is two, and the two side baffles are located on the two sides of the belt respectively and arranged on the belt weigher rack through a support. The scraping piece, the screening mechanism and the crusher are sequentially arranged between the two side baffles, and the direction, pointing to the scraping piece, of the crusher is the conveying direction of the belt; the sieving mechanism comprises a sieve plate and a vibrator; the sieve plate is arranged between the two side baffles through a support and located under the stock bin electric discharging valve. The vertical height of one end of the sieve plate close to the scraping piece is greater than that of one end of the sieve plate close to the crusher; the vibrator is arranged at the end, close to the scraping piece, of the upper end face of the screen plate. According to th