Safe and environment-friendly emptying device for carbon black main bag filter

The invention discloses a safe and environment-friendly emptying device for a carbon black main bag filter, and belongs to the technical field of carbon black production. Comprising a blow-down pipe, the upper end of the blow-down pipe is detachably connected with an external mounting pipe, the external mounting pipe is communicated with the blow-down pipe, a sliding piston block is arranged in the external mounting pipe, a stand column is arranged in the middle of the upper surface of the sliding piston block, one end of the stand column is fixed to the sliding piston block, and the other end of the stand column is fixed to the blow-down pipe. A fixing ring is arranged above the sliding piston block, the edge of the fixing ring is fixedly connected with the inner wall of the external installation pipe in a sealed mode, the stand column is connected to the middle of the fixing ring in a sliding mode, the stand column is sleeved with a reset spring, and the two ends of the reset spring are fixed to the fixing