Sterilization type sedimentation tank with natural sedimentation function

The invention discloses a naturally-settled sterilization type settling pond which comprises a settling pond body and a sludge scraping plate located in the settling pond body and used for cleaning sludge, the sludge scraping plate is attached to the inner bottom wall of the settling pond body, a storage groove is formed in the settling pond body, and a storage box used for collecting the sludge is placed in the storage groove. A driving device for driving the sludge scraping plate to move in the horizontal direction to push the sludge into the storage box is arranged in the sedimentation tank body. An external water pump is started to pump out water in the sedimentation tank body, the external water pump drives an inner gear ring to rotate at the same time, after water is completely pumped out, a swing rod is pushed to rotate with a hinge point as the center, and the swing rod pushes a positioning sleeve and a first gear to move towards the side close to the inner gear ring, so that the first gear and the in