Straw bulking machine

The utility model relates to a straw bulking machine. The utility model provides a straw bulking machine which is high in production efficiency and low in use cost. A straw bulking machine comprises a machine base, a main motor arranged on the machine base, a gear reducer and two bulking cylinders arranged in parallel, a feeding hopper is connected to the upper portions of the bulking cylinders, the gear reducer comprises an input shaft and two output shafts rotating synchronously, the input shaft is connected with the main motor through a belt wheel and a belt, and the output shafts are connected with the main motor through a belt wheel. The two output shafts are respectively connected with bulking shafts arranged in the two bulking cylinders, the bulking shafts are provided with spiral sleeves, and the front ends of the spiral sleeves are provided with cones corresponding to the front ends of the bulking cylinders; a water inlet pipe is arranged at the bottom of the feed hopper adjacent to the conical end o