Carrying pump capable of replacing mouth rings

The utility model discloses a carrying pump capable of replacing mouth rings. The carrying pump comprises a carrying pump body for extracting objects, wherein the carrying pump body comprises an inlet and an outlet, wherein the mouth rings are arranged at the inlet and the outlet; and the whole mouth rings cover the inlet and the outlet and can be replaced. The mouth rings are respectively arranged at the inlet and the outlet of the carrying pump, so that when the object is extracted from the carrying pump, the extracted object can be prevented from being in direct contact with the inlet and the outlet of the carrying pump due to the mouth rings, therefore, the friction and the corrosion are reduced, and the carrying pump body is effectively protected; and the mouth rings are replaceable, so that when abraded, the mouth rings can be replaced at any time, thus an aim of saving resources can be achieved.