1. The blade is a new blade, the blade is oblique cutting blade, power loss is small, time saving and labor saving, and wear resistance, pressure resistance and strong impact toughness,
2. The dust cover is added to the main shaft bearing outdoors to prolong the service life of the bearing
3. The arrangement of the blade has been strictly tested and tested by the balance meter for many times. The reasonable arrangement of the blade can not only improve the crushing quality of the straw, but also make the balance of the returning machine and reduce the vibration of the returning machine