Safe and stable blowout prevention oil drainage device

The utility model relates to a safe and stable blowout prevention oil drainage device, which comprises a main body and a feeding bottom ring, the top of the main body is provided with a first flow limiting mechanism penetrating through the main body, the left side of the main body is provided with a second flow limiting mechanism penetrating through the main body, and the first flow limiting mechanism comprises a cover plate connecting ring, a spring cover plate, a constant speed spring and a material passing box. According to the safe and stable blowout prevention oil drainage device, a spring cover plate in threaded connection with the top of a cover plate connecting ring is arranged, a constant-speed spring at the bottom can be stabilized, so that the constant-speed spring can be propped against to be conveyed downwards, a material passing box is conveyed downwards through the constant-speed spring, and a bottom feeding block can be controlled to have downward force; and a spring seat is arranged in the co