Online sampling device used in chemical fertilizer production process and capable of avoiding fertilizer granule damage

The utility model provides an online sampling device used in a chemical fertilizer production process and capable of avoiding fertilizer granule damage, relating to the technical field of fertilizer production. The device comprises a conveyor belt and a conveyor belt support, wherein a sampling support is fixed on the conveyor belt support; a drive motor, a rotating shaft and a sampling hopper are installed at the upper end of the sampling support; the two ends of the rotating shaft are installed on the sampling support via bearings; the rotating shaft is driven by the drive motor; the sampling hopper is horizontally arranged; the rotating shaft passes through the axis of the sampling hopper and is fixedly connected with the sampling hopper; a guide plate is arranged below a discharge hole of the sampling hopper; the sampling hopper comprises a hopper body with a large-diameter end and a small-diameter end; the discharge hole is formed at the large-diameter end of the hopper body; a plurality of sampling rods are arranged on the outer wall of the hopper body; sampling holes are formed at the front ends of the sampling rods; the sampling rods are in a hollow structure. The online sampling device has the beneficial effects that the online sampling device can complete online sampling in the fertilizer production process instead of manual operation and can adjust the sampling interval time by controlling the drive motor; compared with manual sampling devices, the online sampling device has higher reliability and good sampling uniformity and can not damage fertilizer granules in the sampling process.