Fine powder weighing and metering device

The utility model discloses a fine powder weighing and metering device. Including a base, a stock bin is arranged at the top of the base. Supporting frames are fixedly connected between the two sidesof the outer surface of the stock bin and the base. Wherein a feeding hole is formed in the top of the stock bin; a weighing sensor is embedded in the top of the base, a weighing box is fixedly connected to the top of the weighing sensor, a discharging opening is formed in the position, corresponding to the weighing box, of the bottom of the stock bin, fixing blocks are fixedly connected to the two sides of the inner wall of the discharging opening, and discharging adjusting plates are rotatably connected to the two fixing blocks. Compared with the prior art, due to the fact that the gear is meshed with the rack, when the gear rotates, the rack can horizontally move, the rack moves to push the two discharging adjusting plates to incline, the inclination angles of the two discharging adjusting plates are different,