Modern blowers are mainly composed of the following six parts: motor, air filter, blower body, air chamber, base (also oil tank), and oil dripping nozzle. The blower operates eccentrically with the rotor offset in the cylinder, and the volume change between the blades in the rotor slot causes the air to be sucked in, compressed, and expelled. During operation, the pressure difference of the blower is used to automatically send lubrication to the oil dripping nozzle and drip into the cylinder to reduce friction and noise, while keeping the gas in the cylinder from flowing back. This type of blower is also called a sliding vane blower. The blower mainly delivers clean air, clean coal gas, sulfur dioxide, and other inert gases. It can also produce and deliver other flammable, explosive, corrosive, toxic, and special gases on demand. Therefore, it can be widely used in various industrial sectors such as metallurgy, chemical industry, fertilizer, petrochemical, food, building materials, petroleum, mines, textiles, gas stations, pneumatic transportation, and sewage treatment.

structure

Rotor: It consists of shaft, impeller, bearings, synchronous gears, couplings, sleeves, etc.

Impeller: Involute profile is selected, with high volume utilization.

Bearing: The end near the coupling as the positioning end uses a 3000 double-row radial spherical roller bearing. The end near the gear as the free end uses a 32000 single-row radial short cylindrical roller bearing to accommodate the axial displacement of the rotor during thermal expansion.

Synchronous gear: It consists of a gear ring and a hub, which is convenient for adjusting the impeller clearance.

Machine body: It is composed of the machine housing and left and right wall panels. The left and right wall panels and the bearing seats and sealing parts installed in the left and right wall panels are interchangeable.

Base: Medium and small fans are equipped with a common base, and large fans are only equipped with a fan base, which is convenient for installation and debugging.

Lubrication: Gears are immersed and bearings are splash lubricated. The lubrication effect is good, safe and reliable.

Transmission mode: Direct coupling is the main method. If performance specifications require, V-belt pulley speed change can also be used. The coupling uses an elastic coupling, which can mitigate impact and compensate for a small amount of axis deviation. In addition to using an electric motor as the driving machine, a large flow fan can also use a steam turbine or other driving machine.

Classification

According to the pressure of the fan, the fan can be divided into low-pressure fans, medium-pressure fans and high-pressure fans.

The pressure range is as follows:

Low pressure: Fan full pressure H≤1000Pa

Medium pressure: 1000Pa

High pressure (centrifugal fan): 3000Pa

Low-pressure and medium-low-pressure fans are mostly used in ventilation projects.

Classification by purpose

It can be divided into general fans, dust exhaust fans, industrial ventilation fans, boiler induced draft fans, mining fans, etc.

Fans are widely used in ventilation and high-temperature smoke exhaust for fire fighting in tunnels, underground garages, high-end civil buildings, metallurgy, factories and mines. According to different uses, commonly used fans can be roughly divided into the following types:

⑴ Centrifugal compressor

⑵Power station fan

⑶General centrifugal fan

⑷General axial flow fan

⑸ Blower

⑹ Sewage treatment fan

⑺High temperature fan

⑻Air conditioning fan

⑼ Fire fan

⑽ Mine fan

⑾Tobacco fan

⑿ Grain fan

⒀Marine fans

⒁Dust exhaust fan

⒂Roof fan

⒃Boiler induced draft fan

Mine fans can be divided into main fans, auxiliary fans and local fans according to their uses. The main fan is used for ventilation of the entire mine, the auxiliary fan is used to adjust the air volume of a branch air path in the ventilation network, and the local fan is used for ventilation of a local location.

Sewage treatment fans can be divided into types: centrifugal fans, side channel fans, water ring fans and so on.

According to the principle, it can be divided into centrifugal fans and axial flow fans

Water treatment aeration;

Mixing and aeration of sewage from hospitals and laboratories;

Vacuum paper feeding in the printing industry;

Stirring and aeration of electroplating tanks and industrial wastewater;

Air supply for plastic welding and blowing;

Burner spray, glass industry and others;

According to the bearing technology, it can be divided into general mechanical bearing blower, magnetic levitation blower and air suspension bearing blower.

        Shenzhen Huaxinrong Plastic Electronics Co., Ltd. (a subsidiary of Dongweifeng) was established in 2008. It mainly produces and develops a series of products such as AC and DC cooling fans and DC motors. In today's rapidly changing modern technology, all colleagues of Dongweifeng will continue to dedicate high-quality products and services to our customers, and strive to become an indispensable partner for every customer to achieve success.

        Shenzhen Dongweifeng Electronic Technology Co., Ltd. was established in 1991. It is a national high-tech enterprise. It has now developed into a professional supplier of cooling solutions and products for computers, electronics, etc. The company has successfully passed ISO9001:2000 quality system certification, ISO14001:2004 environmental system certification and UL. TUV. CE product certification. As a national key high-tech enterprise focusing on R&D, manufacturing and sales, it has formed three pillar industries: computer electronic radiators, cooling fans; LED lighting, outdoor landscape lighting engineering lighting; and architectural decorative panels.