Mining PE drainage pipe for protecting inner wall

The utility model relates to the technical field of drainage pipes, and provides a mining PE drainage pipe for protecting the inner wall, which comprises a drainage pipe body and further comprises a plurality of hollow pipes which are fixedly arranged on the inner wall of the drainage pipe body close to one end in a circumferential array mode, and movable rods are movably embedded in the hollow pipes. According to the device, downward acting force is applied to the baffle through water and large-particle impurities, so that the sliding rod slides towards the interior of the hollow round rod, the buffer spring is compressed, the hollow round rod rotates by a certain angle around the first fixing rod, the baffle is unfolded downwards, and under the reset acting force of the buffer spring, the baffle is unfolded downwards. According to the drainage pipe, the downward flowing speed of large-particle impurities can be reduced, and the large-particle impurities can flow towards the middle of the drainage pipe body,