Self-centering anti-blocking device for charging blasthole

The utility model discloses a self-centering anti-blocking device for charging of a blast hole, which relates to an explosive cylinder and comprises a cylinder connecting part, a cylinder connecting part and a cylinder connecting part, and the explosive cylinder is arranged in the middle, is conical, is connected with the cylinder connecting part, and is used for guiding the explosive cylinder to enter a blast hole. The self-centering anti-blocking device for deep blast hole charging is connected to the front end of the explosive cylinder through the cylinder connecting part, in the process of conveying the explosive cylinder upwards, due to the fact that the self-centering middle part is conical, and a gap is formed between the front end of the self-centering middle part and the hole wall of the blast hole, the explosive can not be blocked by unevenness or steps on the periphery of the blast hole and can easily pass through the explosive cylinder, and the self-centering anti-blocking device is simple in stru