Fan blade adjusting device and opposite rotating axial flow fan

The invention discloses a fan blade adjusting device and an opposite rotating axial flow fan. The fan blade adjusting device comprises a driving rod; the driving rod comprises a driving end positioned out of a fan shell, and a connecting end connected with a transmission part; the connecting end of the driving rod is connected with a first transmission part capable of rotating along with rotation of the driving rod; the first transmission part is connected with a second transmission part capable of axially moving along a fan shaft along with rotation of the first transmission part; the second transmission part is connected to a blade adjusting disc capable of axially moving along with axial movement of the second transmission part; the outer periphery of the blade adjusting disc is connected with each blade rotating arm; and one end of each blade rotating arm is connected with the blade adjusting disc, and the other end is connected with each fan blade. 本发明公开了种风机叶片调节装置及对旋轴流式风机，所述风机叶片调节装置包括：驱动杆，所述驱动杆包括位于所述风机壳外