Mixing device for manufacturing concrete blow-off pipe

The utility model discloses a mixing device for manufacturing a concrete blow-off pipe, which comprises a stirring box, the bottom of the stirring box is provided with a support mechanism and a discharge mechanism, the stirring box is fixedly provided with a mounting rack, the bottom of the mounting rack is fixedly provided with a stirring mechanism, and the stirring mechanism extends into the stirring box and is rotatably connected with the stirring box. The top of the stirring box is fixedly provided with a plurality of feeding hoppers extending into the stirring box, the top of the stirring box is slidably connected with a plurality of blocking mechanisms in a penetrating mode, the blocking mechanisms all extend into the opposite feeding hoppers and abut against the inner tops of the feeding hoppers, and the side wall of the stirring mechanism abuts against the inclined face of one blocking mechanism. The concrete mixing device is reasonable in structural design, various raw materials can be continuously a