Dual-drum type gas well ground ball capturing device

The invention belongs to the technical field of petroleum and natural gas development tools and particularly provides a dual-drum type gas well ground ball capturing device. The dual-drum type gas well ground ball capturing device comprises an upper adapter connector, an inner drum, an outer drum, an outer hexagonal baffle and a lower connector, wherein the outer side of the lower part of the upper adapter connector is connected with the upper part of the outer drum; the lower part of the outer drum is connected with the lower connector; the inner side of the lower part of the upper adapter connector is connected with the upper part of the inner drum; the lower part of the inner drum is connected with an outer hexagonal baffle; annular space is formed between the inner drum and the outer drum; a plurality of inner drum cutting gaps are uniformly distributed in the wall of the inner drum. The ball capturing device is directly mounted on a relief line of a wellhead and used for collecting a steel ball or a composite ball returned from the well through the inner drum, meanwhile the sand-laden fluid from the well cannot precipitate in the ball capturing device to affect the capturing effect on the steel ball or the composite ball, so that the success rate of ball capturing is high, the ball capturing device can be dismounted after relief operation is over, besides, the operation is convenient, the efficiency is high, the requirement on capturing different sizes of steel balls and composite balls can be met, the application range is broad, and the device can be widely popularized.