Annular-air-blow air duct device for chemical fiber spinning

The utility model discloses an annular-air-blow air duct device for chemical fiber spinning. The annular-air-blow air duct device for chemical fiber spinning is characterized by comprising an air duct body, wherein the air duct body comprises an inner air filter screen and an outer air filter screen, the inner air filter screen is cylindrical, the inner air filter screen is sleeved with the outer air filter screen, the two ends of the inner air filter screen are respectively and fixedly provided with an inner annular sleeve, the two ends of the outer air filter screen are respectively and fixedly provided with an outer annular sleeve, the inner annular sleeves are fixedly connected with the outer annular sleeves, main filter holes are evenly formed in the inner air filter screen, the diameters of the main filter holes are identical, a plurality of filter holes different in diameter are formed in the outer air filter screen, and the diameters of the filter holes become smaller gradually from one end of the outer air filter screen to the other end of the outer air filter screen. The annular-air-blow air duct device for chemical fiber spinning is even in air volume, the temperature difference of air at the position close to the air screens and air at the position far away from the air screens is small, and it is guaranteed that the evenness performance of the quality of nascent fiber is high.