1. Why use explosion -proof shaft flow
Explosion -proof shaft fans are a special type of fan. It is a specialty place for flammable and explosive. The commonly used industries in Z are oil and chemical industry.The main thing is that during the start and operation of the isolation fan, the sparks generated by the motor wiring terminal, fixed rotor or other components are not in contact with the external flammable and explosive gas contact.The improvement of a fan in the 1980s has more prominent advantages:
① The performance is greatly improved;
② The structure is more reasonable;
③ The noise is lower, and the noise (more than the A) decreases 3.6db (A).
It is widely used in general factories, warehouses, offices, and internal ventilation of ventilation or heating heat dissipation. It can also be installed in series in the interval between the exhaust pipes to improve the pressure in the pipeline. The motor can be used as a free fan.
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 Perhaps the doors and windows, walls are exposed in the early stage of ventilation with centrifugal fans, and even surface grain surfaces may be exposed slightly.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, and the ventilation of a single part in the early stages of ventilation is slow.Essence
4 It is necessary to organize a slow -ventilatory grain. It is necessary to organize the sorting sieve, and the grain in the warehouse is necessary to clean up the impurities area composed of automatic grades in time, otherwise it will easily constitute some uneven ventilation.
5 Energy consumption accounting: Warehouse No. 14 uses explosion -proof shaft flowers for 50 days, 15 hours a day, 750 hours a day, a uniform water drops by 0.4%, the grain temperature is uniformly reduced by 23.1 degrees, and the unit energy consumption is: 0.027kWww.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 By explosion -proof shaft flowers for slow ventilation: excellent cooling effect; low energy consumption, which is particularly important today; ventilation opportunities are easy to grasp and are not prone to exposure; do not need to equip fan 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 fan: cooling, precipitation effects obvious, and short ventilation time; disadvantages: unit energy consumption is high; 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, and energy -saving slow ventilation; centrifugal fan is used in ventilation at the purpose of downgrading.