The explosion -proof shaft flow is widely used in the ventilation or strong heating heat dissipation of general factories, warehouses, offices, and houses. It can also be installed in series in a long exhaust pipe to improve the pressure in the pipe.The motor can be disassembled as a free fan.The simple direct structure connected to the motor and the impeller has changed the complex structure of the current coal mines and the circulation wind and belt transmission or long shaft transmission, which is conducive to operation and maintenance.The main difference between it and ordinary axis flow is that during the isolation start and operation, the sparks generated by the motor terminal, fixed rotor or other components are not touched with the outside world, causing safety accidents.The differences between them are mainly reflected in the following aspects:
1. Explosion -proof fan uses explosion -proof type fan, which is suitable for the environment of the temperature group T1 ~ T4.Ordinary axis flowers use ordinary fans, and general fire smoke fan uses high -temperature motors.
2. Differences of impeller: The blades and wheels of the explosion -proof shaft fans are cast by aluminum alloy.Dynamic balance verification, good air performance, high efficiency, stable operation, preventing sparks during runtime; the leaves and wheels of ordinary axis flowers are generally cast iron or other materials.
3. Explosion -proof fans have stricter safety protection requirements on the entrance and exit.
Whether it is a ordinary axis flow fan or an explosion -proof shaft fans, this kind of maintenance is required:
1. Before installing, carefully check whether the ventilation is damaged or deformed due to packaging, transportation, etc., and installation after the maintenance is properly repaired.When installing, check whether the relevant components are loose, the leaves and the air ducts are uniform, and they must not collide.
2. The fan is not used for a long time. When you use it again, you must first check whether each connector is firm and reliable, and it can be formally used after trial operation.
3. The inlet end of the axial flow fan must be installed and the protective silk mesh must be installed.
4. The weight of the pipeline connecting the outlet should not be borne, and support should be increased during installation.
5. The axis flow fan is not allowed to be used.After the installation is completed, debugging must be first.
6. After the fan is officially operated, check whether the screw is loose and whether the wire skin is damaged once a year, and it is repaired according to its specific situation.
7. The foundation of the fan must be naturally connected to the basic plane. It is not forcibly connected to the bolt to prevent the base from deforming.During the installation, use the horizontal ruler to calibrate the base, add the cushion to keep its horizontal position, and then tighten the foot bolt.
8. Pay attention to whether the fan has abnormal noise and vibration during operation, and check and repair in time.
2. Introduction to the role of explosion -proof shaft fans.
1. Due to the large temperature difference between morning and evening, the ventilation time should be selected during the day to reduce the interval between the temperature of the food temperature and reduce the occurrence of exposure.In the future, the ventilation should be carried out at night. Because the ventilation is mainly cooling, the atmosphere is relatively high at night and the temperature is low. This reduces water loss.After using the low temperature at night, the cooling effect was improved.
2. In the early stage of ventilation of a centrifugal fan, doors and windows, walls, and even surface grains may appear slightly exposed.Wet and humid air can be removed outside the warehouse.The use of explosion -proof shaft flowers will not appear to expose the appearance, and only the temperature of the middle and upper grains will rise slowly, and the continued grain temperature will decrease steadily with the ventilation.
3. When the explosion -proof shaft flowers are used for slow ventilation, due to the small air volume of the explosion -proof shaft flow fan, other food is a bad conductor of heat. The ventilation of a single part in the early stage of ventilation is slow.balance.
4. It is necessary for the grain to be slowly ventilated to be organized by vibration sieve, and the grain in the warehouse is necessary to clean up the impurities area for automatic grading in time.
5. Energy consumption accounting: Warehouse No. 14 uses explosion -proof shaft flowers for a total of 50 days, 15 hours a day, 750 hours a day, a uniform water decreased by 0.4%, the grain temperature was uniformly reduced by 23.1 degrees, and the unit energy consumption was: 0.027kw.h/t. ℃.Warehouse 28 has a total ventilation for 6 days, with 126 hours of common, and the water is uniformly reduced by 1.0%. The role of explosion -proof shaft flowers and explosion -proof centrifugal fans is evenly reduced by 20.3 degrees. The unit energy consumption is: 0.038kW.H/T. ℃Essence
6. The benefits of slow ventilation with explosion -proof shaft flowers: excellent cooling effect; low energy consumption, which is particularly important today; ventilation opportunities are easy to grasp and are not easy to expose; do not need to equip each other alone to facilitate activation.Disadvantages: Due to the small air volume and long ventilation time; the effect of precipitation is not obvious, and high -water grain should not be ventilated with explosion -proof shaft fans.
7. The interests of centrifugal fans: cooling, precipitation effects, obvious effects, short ventilation time; disadvantages: high energy consumption; ventilation opportunities to grasp the owed and easy to appear.
8. Conclusion: In the ventilation of the purpose of cooling, the use of explosion -proof shaft flowers for safe, efficient, energy -saving slow ventilation; use centrifugal fans in ventilation at the purpose of downgrading water