Watermelon seed collecting device for watermelon planting

The watermelon seed collecting device comprises a collecting pipe and a filtering cover, an inclined opening is formed in the feeding end of the collecting pipe, a flush opening is formed in the discharging end of the collecting pipe, a sliding rail is welded to the pipe wall of the collecting pipe in the S-shaped direction of the collecting pipe, and one end of the sliding rail extends to be close to the inclined opening and is provided with a first limiting block; a falling plate capable of sliding to the other end along one end of the rail is slidably installed in the sliding rail, when melon seeds collected in the collecting pipe are discharged, the pipe cavity can be prevented from being blocked through the operation, normal discharging is ensured, an impurity cleaning mechanism driven by a motor is arranged at the discharging end of the collecting pipe, and therefore the melon seeds can be cleaned conveniently. When the filter cover rotates, impurities in melon seeds collected in the pipe cavity can be