Pneumatic head screwing device for glue seismic explosive column

The utility model relates to the technical field of cap screwing devices, in particular to a pneumatic head screwing device for a glue seismic explosive column, which comprises a pneumatic wrench, a cap screwing cover and an ejection component, the cap screwing cover is provided with a clamping groove, and the ejection component comprises a mounting seat, an ejection spring, a locking rod, an ejection plate and a locking component. When the cap screwing device is used for screwing the gland, the cap screwing cover is aligned with the gland and sleeved on the gland, the pneumatic wrench is started to drive the cap screwing cover to rotate so as to tighten the gland, when the gland is taken down, the ejection plate compresses the ejection spring, the locking rod is locked through the locking component, and then the operation is repeated. And the output end of the pneumatic wrench is rotated reversely to drive the cap screwing cover to rotate reversely to take down the gland, at the moment, a worker relieves loc