High Pressure Industrial Fan Low Noise Blower High Efficiency Blower Industrial Blower Fans Regenerative Air Blower

Noise control
(1) High pressure fan [1] impeller, fan shaft, pulley and coupling and other rotating parts must be strictly corrected for static and dynamic balance, and can only be assembled into a table after qualified. It is allowed to leave the factory. At the same time, the gap between the motor cooling fan blade and the guide wind ring should be reasonably selected to effectively reduce the rotational noise of the motor cooling fan blade.

(2) Regularly check whether the connecting bolts and anchor bolts of all parts of the high-pressure fan are loose, and whether the bearings are abnormally worn or lubricating. Whether the transmission belt is tensioned or not. If an abnormal situation is found, stop immediately to exclude it.

(3) During installation, soft materials such as rubber, cork board or felt board should be placed between the high-pressure fan and the reinforced concrete foundation. The vibration transmitted by the fan to the reinforced concrete foundation is weakened or eliminated to the maximum extent.

(4) Install a rubber hose at the air inlet and exhaust of the high-pressure fan, so that the vibration transmitted by the fan to the air pipe can be maximally weakened or eliminated at the rubber hose.

(5) Rationally select the shape and diameter of the motor cooling fan blade and other parameters. Effectively reduce the eddy current noise of the motor cooling fan.

(6) The muffler installed at the air inlet and exhaust of the high pressure fan is the use of porous sound-absorbing material to absorb sound energy. When the sound wave passes through the air inlet and exhaust of the porous sound-absorbing material. The sound wave will stimulate the air molecules in the numerous small holes in the porous sound-absorbing material to produce violent motion, and most of the sound energy is used to overcome the frictional resistance and viscous resistance and is converted into heat energy and consumed. Thus, the aerodynamic noise produced by the centrifugal fan is reduced. Practice shows that. The muffler is installed at the air inlet and exhaust of the centrifugal fan. Generally, it can reduce the aerodynamic noise generated by the air inlet and exhaust outlet by about 20 ~ 30 decibels (A).

(7) Because the size of the exhaust outlet of the impeller blade of the high-pressure fan is usually larger than the size of the inlet at the front disk, the air flow in the fan will be at the inlet

Many eddies are formed at the parts of the arc section. Eddy current will collide with fan volute and air inlet parts many times and form aerodynamic noise. The rectifier ring and baffle can be added in the design and manufacture of the fan inlet at the periphery of the fan volute, which can effectively prevent the vortex formation of the air flow at the fan inlet, thereby reducing the aerodynamic noise generated by the centrifugal fan.

(8) The high pressure fan impeller blade is designed and made into a swept twisted blade, that is, the fan impeller blade is moderately tilted forward at the outlet, and moderately tilted backward at the inlet, so that the sharp change of the gas flow channel can be avoided. Prevent vortexing of the gas. Thus, the aerodynamic noise produced by the centrifugal fan is reduced.

Key Features

• Impeller diameter: 90~3500 mm
• Speed of mainshaft: 560~2900 rpm
• Pressure range: 3000~25425 Pa
• Flow range: 1297~43305 m3/h
• Air Temperature: 20~1000 Celsius degree

• Material: Cast Iron, Carbon Steel, Stainless Steel.

• Efficiency: 70%-90%