A sampling nominal device for conveyor belt

The utility model relates to a sampling nominal device for a conveyor belt, which belongs to cement processing equipment and comprises two parallel support plates, an auxiliary plate, the conveyor belt, a support mechanism and a scraping mechanism. The supporting mechanism comprises two first supporting rods, a first supporting sleeve, a plurality of second supporting rods and a second supportingsleeve. The two first support rods are respectively arranged between the two support plates and the auxiliary plate; a first mounting assembly and a second mounting assembly are arranged between the first supporting rod and the auxiliary plate and between the supporting plates; the multiple second supporting rods are distributed on the two sides of the first supporting rod and arranged in the horizontal direction, the two ends of each second supporting rod are installed on the two supporting plates respectively, the second supporting sleeves penetrate through the auxiliary plates, and the upper tangent planes of the s