Mine Axial Flow Fan Underground Fan
Date of issue:2022/12/6 8:45:17 Number of Views:
Mine Axial Flow Fan Underground Fan:
Mine axial flow fan underground fan adopts wing twisted blade and direct drive in structure. It has the advantages of simple and compact structure, reliable transmission, sturdy and durable, safe use, convenient maintenance, high operation efficiency, efficient performance curve, large operation range and obvious power saving effect. , stable wind pressure and other characteristics.
The main components of the axial flow fan are impeller, guide vane, casing, main shaft, etc. The impeller consists of a blade and a hub, and the blade section is an airfoil, which is installed on the hub at a certain installation angle.
When the impeller is driven to rotate by the main shaft, the energy of the gas in the flow channel of the impeller increases under the action of the blades. After the flow direction is corrected by the fixed guide vane, it is discharged in the direction close to the axial direction through the diffuser.
The superiority of mine axial flow fan underground fan:
1 High transmission efficiency. The impeller is directly installed on the motor shaft, which changes the conservative transmission structure, which not only avoids frequent damage to the transmission device, eliminates energy loss, but also improves the transmission efficiency of the fan device, and also improves the use efficiency.
2 The pressure value of the highest pressure point of the rotary axial flow mining fan is higher, generally 1.2 1.3 times higher than the pressure of the ordinary axial fan with back-guided
3 High static pressure efficiency. Due to the counter-rotation structure, the guide vanes between the two stages of the working wheel are reduced, the internal resistance loss of the fan is reduced, and the static pressure efficiency of the fan is improved.
4 High maximum efficiency, wide range of efficient operation. The maximum efficiency of the cyclone fan is about 8% higher than the front guide vane two-stage fan 4% higher than the maximum efficiency of the rear static vane two-stage general mining fan 5% Its high efficiency operation range is wide [2]
5 Axial flow is flexible for cyclones. The two-stage working wheel of the cyclone is driven by two motors, so that the cyclone corresponds to different states of use, and various combinations can be carried out, so that the middle stage of idling can be composed of leading plus moving vane stage or moving vane plus rear guide vane stage, and can also be equipped with a static vane as an accessory, and the grid distance can be adjusted to achieve variable air volume adjustment. The flow rate is adjusted by the variable speed of the cyclone and the speed ratio of the two rotors, which is unique to cyclones
6 axial flow to cyclone, has good reverse air supply performance, return air volume can reach 60% 70% air supply volume. Since the cyclone can use the reverse wind of the motor, there is no need to build a diffuser and diffusion tower, nor a fan room and anti-air duct, and the construction process is simple, so the construction period can be greatly shortened. Compared with other fans, it has less auxiliary equipment, fewer control links, good safety and reliability, and can save 70% of civil engineering costs.
Mine Axial Flow Fan Underground Fan:
Mine axial flow fan underground fan adopts wing twisted blade and direct drive in structure. It has the advantages of simple and compact structure, reliable transmission, sturdy and durable, safe use, convenient maintenance, high operation efficiency, efficient performance curve, large operation range and obvious power saving effect. , stable wind pressure and other characteristics.
The main components of the axial flow fan are impeller, guide vane, casing, main shaft, etc. The impeller consists of a blade and a hub, and the blade section is an airfoil, which is installed on the hub at a certain installation angle.
When the impeller is driven to rotate by the main shaft, the energy of the gas in the flow channel of the impeller increases under the action of the blades. After the flow direction is corrected by the fixed guide vane, it is discharged in the direction close to the axial direction through the diffuser.
The superiority of mine axial flow fan underground fan:
1 High transmission efficiency. The impeller is directly installed on the motor shaft, which changes the conservative transmission structure, which not only avoids frequent damage to the transmission device, eliminates energy loss, but also improves the transmission efficiency of the fan device, and also improves the use efficiency.
2 The pressure value of the highest pressure point of the rotary axial flow mining fan is higher, generally 1.2 1.3 times higher than the pressure of the ordinary axial fan with back-guided
3 High static pressure efficiency. Due to the counter-rotation structure, the guide vanes between the two stages of the working wheel are reduced, the internal resistance loss of the fan is reduced, and the static pressure efficiency of the fan is improved.
4 High maximum efficiency, wide range of efficient operation. The maximum efficiency of the cyclone fan is about 8% higher than the front guide vane two-stage fan 4% higher than the maximum efficiency of the rear static vane two-stage general mining fan 5% Its high efficiency operation range is wide [2]
5 Axial flow is flexible for cyclones. The two-stage working wheel of the cyclone is driven by two motors, so that the cyclone corresponds to different states of use, and various combinations can be carried out, so that the middle stage of idling can be composed of leading plus moving vane stage or moving vane plus rear guide vane stage, and can also be equipped with a static vane as an accessory, and the grid distance can be adjusted to achieve variable air volume adjustment. The flow rate is adjusted by the variable speed of the cyclone and the speed ratio of the two rotors, which is unique to cyclones
6 axial flow to cyclone, has good reverse air supply performance, return air volume can reach 60% 70% air supply volume. Since the cyclone can use the reverse wind of the motor, there is no need to build a diffuser and diffusion tower, nor a fan room and anti-air duct, and the construction process is simple, so the construction period can be greatly shortened. Compared with other fans, it has less auxiliary equipment, fewer control links, good safety and reliability, and can save 70% of civil engineering costs.
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