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Yueqing Chuanwang Electric Technology Co., Ltd. was established in 2014, the company is located in the beautiful and rich Liushi Town, Yueqing City, the Electric Capital of China.
After more than 10 years of struggle, the company has developed into a non-regional national entity enterprise today, and its sales network covers all provinces and cities across the country, as well as the Middle East, East Asia and North America. At present, the group has more than 200 employees, and has now developed into a diversified non-regional company integrating product research and development, design, production, operation and service. The total area of the company's workshop is 15,000 square meters meters, the total asset value is about 100 million yuan, and the annual production capacity is 200 million yuan. Professional supporting enterprises for fans, explosion-proof electrical appliances, mobile lighting, fixed lighting and other series products, high-quality suppliers of explosion-proof supporting products such as PetroChina, Sinopec, China Coal, etc. Ideal partner for water conservancy, government and other units.
The company has obtained a series of products "Explosion-proof Certificate", "National Industrial License", "Coal Safety Certification", "3C Certification" and passed the "ISO9001:2008 Quality System Certification" and the United States FM/UL, European Union ATEX, International IECEx, International quality standard certification such as Russia Cu TR and Brazil Inmetro certification. We also continuously improve product quality and expand new specifications to meet different requirements.
The scope of use of explosion-proof fans
It is mainly used in special occasions and can be used to "transport flammable, explosive and non-corrosive gases".
At the same time, it can also be widely used in "general factories, warehouses, offices, and residences" for ventilation or strong heating and heat dissipation. It can also be installed in series with long exhaust pipes to increase the pressure in the pipes. Remove the motor to make a free fan.
How to choose explosion-proof fan?
1. In addition to hard indicators such as air pressure and air volume, explosion-proof fans must use explosion-proof motors, explosion-proof switches, and increase explosion-proof casings.
2. There are requirements for the material of the impeller and the material of the inner wall of the casing corresponding to the impeller, and they are required to not produce sparks in case of friction, such as using aluminum fan blades and iron inner walls, or iron fan blades and adding them to the inner wall. Aluminum ring.
3. The explosion-proof fan has lower limit requirements for the clearance between the impeller and the casing. In order to pursue efficiency, fans often have upper limit requirements for clearance, which are contradictory.
4. Explosion-proof fans have stricter requirements for safety protection at the inlet and outlet.
Advantages of explosion-proof fans
1. The impeller blade installation angle of the explosion-proof fan is adjustable, and the blade angle can be adjusted according to production needs. The fan is specially designed, the performance curve has no hump, and can run stably under any network resistance.
2. The fan installed outside the motor is fully enclosed, and has a certain compressive strength of the closed heat shield and the air pressure balance pipe, so that the motor can always run in a gas-free environment, which proves the regulations.
3. The simplest structure of the fan with the direct connection between the motor and the impeller changes the axial ventilation and exhaust of the coal mine shaft, and adopts the complex structure of belt drive or long shaft drive, which is beneficial to operation and maintenance.
4. Some explosion-proof fans are of single-stage working wheel structure. The fan and diffuser are arranged between the rear guide vanes to increase the static pressure efficiency.
5. The fan is reversible wind, and the wind resistance can reach 65% to 85% of the positive wind volume. There is no need to set up another air duct, which saves infrastructure investment and wind speed.
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The reason: explosion proof design requires isolation from the potentially explosive air. By nature of the way a fan operates, a potentially explosive air stream will always be in contact with the interior of the fan housing and the fan impeller.
To be explosion proof, it must say class one, division one. I believe what you have is a totally enclosed fan cooled motor known as a TEFC motor. As long as the fan motor is outside the airflow you can use either an open, TEFC, or exp proof motor.
When these combustible materials are present in an environment in high concentrations, they may ignite and cause an explosion. As such, you want to install an explosion proof fan if you operate in a dangerous area where flammable particles or gases are in the air or passing through ventilation systems.