JK40 mine axial fan structure

2 JK40 mine summed up a new damper with an improved structure and characteristics Axial fans through years of practice, its structure type shown in Figure 2. With axial fan blade 1 JK40 ore is mainly composed of the rotary shaft 2, duct 3, the central body 4, the positioning plate 5, the handle 6, the linkage handle 7, rod 8, shaft sleeve 19, rod 10 and the puck and standard parts and so on. (1) JK40 mine axial fan adjustment on the door and the door structure is generally adjusted biggest difference is (Figure 2): ① linkage handle 7 formed double length, connected by a connecting rod and shaft; ② cancel circling; ③ puck (item 1) is made of 90 ° fan beam welding and duct connected door when adjusting After adjusting the handle, then screw the dish nut. (2) JK40 mine to determine axial fan handle location: handle rotate 90 ° to the circumferential position switch position. (3) JK40 mine adjust the door with the advantages of axial fans: ① simple structure. Compared with the general regulation of the door to remove the circular motion (member 1), a small shaft (9), pulleys (parts 3 or 4 pieces), the support plate (key 6 or 8 pieces), pin (item 3 or 4 pieces), etc. . Positioning portion directly into the handle and the puck, easy to control; ② ease of processing. Just make sure the blade axis and vertical interlocking handle it, due to fewer working parts, reducing the accumulated error; ③ stiffness. The blade made of a double layer structure, increasing the blade stiffness, not easily deformed; ④ opening and closing flexible regulation performance; decreased ⑤ switch torque. Link structure will be used for linear motion, circular motion applied to the toggle mechanism, the realization of the two-way force, especially for large damper; no complex calculations ⑥ equipped with electric actuators. Due to the rotation direction of the handle and the electric actuator handle is consistent, as long as the two can be the same length. Conclusion After 3 years of application, JK40 mine axial fan damper has been serialized, the size range of the inner diameter of φ 800 ~ φ 2500. Practice has proved that: the use of effective solve the previous damper rotation is not flexible, strictly off, open issues and incomplete, especially in terms of solving inflexible large damper rotation, the advantage is more prominent. JK40-1 5.5 4.3-5.1 633-475 5.5 6.5 7.1-8.4 884-663 11 7 8.8-10.5 1025-769 15 7.5 10.9-12.9 1177-883 22 8 13.2-15.6 1339-1005 30