Coal pulverizer impeller structure and use coal pulverizer of this impeller structure

The utility model relates to a coal pulverizer impeller structure and use coal pulverizer of this impeller structure, coal pulverizer impeller structure includes airflow channel, airflow channel has air intake and air outlet, the last throttle structure that is provided with of airflow channel, last being equipped with of airflow channel flows to the necking down section that the cross -section reduces in succession along the air current, the throttle structure is formed by the necking down section, in the use, when air current process airflow channel, along with continuous, even the reducing of airflow channel cross section, the even improvement of the velocity of flow of air current, compare current impeller, can obviously reduce impeller air inlet resistance, reduced the torrent of impeller air outlet department for the velocity of flow of the air current that flows via the impeller is even, reduces the output of the stone coal of current coal pulverizer. 本实用新型涉及磨煤机叶轮结构及使用该叶轮结构的磨煤机，磨煤机叶轮结构包括气流通道，气流通道具有进风口和