Explosion-proof blower 7.5kw/380v, 20kw/380v



Explosion-proof blower structure description
2.1 The flameproof structure of the electric fan has Ex dI, Ex dIIAT4 and Ex dIIBT4.
2.2 Electric fan main body protection class IP55.
2.3 The cooling method of the electric fan is IC411.
2.4 The electric fan has an insulation class of F, and the stator winding has a large temperature rise margin and a long service life.
2.5 The electric fan has a cylindrical shaft extension, which is driven by a coupling or gear.
2.6 Electric fan stator windings are made of high-strength enamel-coated round copper wire and treated by vacuum pressure immersion paint to form a complete whole. Winding and insulation have good electrical, mechanical, moisture-proof performance and thermal stability.
2.7 The rotor of the electric fan adopts cast aluminum structure, and the rotor is checked by dynamic balance. The motor runs smoothly, the vibration is small, and the noise is low.
2.8 The electric fan is fixed and the rotor is made of high-magnetic, low-loss electric silicon steel sheet with low motor loss and high efficiency.
2.9 Electric fan bearings use low-vibration and low-noise bearings for motors, double-sided sealed bearings with frame size 160 and below, and wave spring washers at the shaft end to moderately resist bearings and effectively suppress vibrations generated during motor operation. And noise, the frame number 180 and above adopts the inner and outer cover structure, and the bearing ring is axially fixed at the bearing part, effectively preventing the axial movement of the motor rotor.
In order to use the motor safely and reliably, the motor bearing structure of the frame number 180 and above is equipped with an oil filling device, the motor with the frame number 250 and above, and the position of the bearing temperature monitoring sensor element is reserved.
2.10 Motor fan and hood: The motor with frame number 280 and below adopts anti-static plastic fan, which has small moment of inertia and low loss. The frame size is 315 and above. The cast aluminum or steel plate welding fan is light in weight and high in strength. The series of fans and shafts are keyed for reliable operation. The windshield is a steel plate structure, and a large ventilation area is obtained under the premise of preventing intrusion of a certain size of foreign objects, so that the wind path is smooth.

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