Replacement-free barrel-shaped dirty oil recovery device with pneumatic conveying capacity

The utility model provides a replacement-free barrel-shaped dirty oil recovery device with pneumatic conveying capacity, and belongs to the technical field of dirty oil recovery treatment devices. The technical problem to be solved is to provide the sump oil recovery device which is used in a chemical engineering device and can automatically and safely complete sump oil storage, conveying and recovery with low energy consumption. In order to solve the technical problem, the technical scheme adopted by the utility model is as follows: the device comprises a barrel body, a matched piston is arranged in the barrel body, the bottom of the barrel body is provided with an isolation type limit switch and an emptying guide spraying device, the top of the barrel body is provided with a detachable charging cover, and the barrel body is also provided with a pressure release valve; the bottom of the barrel is connected to the sump oil recovery interface assembly through an oil return valve; the cylinder body is connected