Multi-component fertilizer mixing device for fertilizer production

The multi-component fertilizer mixing device for fertilizer production comprises a conveying belt, a support, a funnel, a screen and positioning blocks, the conveying belt is used in cooperation with the support, the funnel is fixedly connected to the top of the support, the screen is movably connected to the inner wall of the funnel, the positioning blocks are arranged on the left side and the right side of the screen, and positioning cavities are formed in the positioning blocks; and an adjusting mechanism and a positioning mechanism are arranged in the positioning cavity. The conveying belt, the support, the funnel, the screen, the positioning block, the adjusting mechanism and the positioning mechanism are used in cooperation, the adjusting mechanism is adjusted, replacement and installation of the screen can be rapidly and conveniently operated, and the purpose that due to the fact that the screen is abraded after being used for a long time or the screen needs to be detached and cleaned, the screen is no