Centralized crushing device for waste tires

The utility model discloses a waste tire centralized crushing device which comprises a device shell, a crushing cabin is arranged at the upper end in the device shell, a group of crushing rollers are arranged in the crushing cabin, and at least two crushing cabins which are arranged up and down are arranged in the device shell and located below the crushing cabin. A group of crushing rollers are arranged in the crushing cabin, uniformly distributed blades are arranged on the radial outer sides of the crushing rollers, a screening cabin communicated with the crushing cabin is arranged at the lower end in the device shell, and an inclined filter screen plate is arranged in the screening cabin; rubber fragments falling into the middle positions of the crushing rollers can be reversely and densely cut in a staggered mode through the crushing rollers which rotate rapidly and are provided with the positive cutters and the crushing rollers with the negative cutters, so that the fragments are rapidly crushed, the cru