Anti-crack concrete mixing equipment

The utility model discloses anti-crack concrete mixing equipment which comprises a mixing box, a cavity is formed in the surface of the mixing box, heating rods are arranged in the cavity in the circumferential direction, feeding ports are formed in the two sides of the top face of the mixing box, material blocking rings are fixedly installed at the upper ends of the surfaces of the feeding ports, and negative pressure cavities are formed between the material blocking rings and the feeding ports. And a supporting plate is fixedly mounted in the negative pressure cavity. According to the concrete feeding device, the negative pressure generating device is arranged, the negative pressure generating device can collect and recycle dust generated during feeding through a dust collecting bag, waste of concrete raw materials is reduced, pollution to the surrounding environment of operation due to the fact that the dust drifts everywhere is avoided, and harm to the body of a worker is effectively reduced; by arranging