Wear-resistant ore pulp pipeline elbow and square box

The utility model discloses a wear-resistant ore pulp pipeline elbow and a square box, which are applied to the technical field of ore dressing engineering, through the cooperative use of the elbow, an inlet pipe, a liquid outlet pipe, a buffer mechanism, a sealing mechanism and a mounting assembly, mortar enters the elbow and the square box from one end of the inlet pipe, and the mortar is reserved in the buffer mechanism; the mortar entering the pipeline collides with the mortar reserved in the square box, potential energy abuts against the mortar reserved in the square box, and therefore metal abrasion caused by repeated washing of the mortar in the reverse direction is avoided, the service life of the square box and the service life of the elbow are prolonged, and replacement and maintenance of the square box and the elbow are reduced. And the square box can be supported and protected through the installation assembly, and the situation that the square box is damaged after being impacted by the mortar is