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Principle and Application of Magnetic Levitation Blower

It is directly driven by a high-speed motor, and the speed is adjusted by a frequency converter. The active magnetic bearing system is used to support the internal rotating magnetic bearing without contact and wear through controllable electromagnetic force,The magnetic bearing is directly connected with the impeller, and the transmission loss is zero.In order to achieve the successful delivery of gas without wear, low noise, no lubrication and other effects inside the machine.

In recent years, magnetic levitation blower because of itsEnergy saving and environmental protectionThe characteristics of have been widely used inmultiple industriesareas, and oftenenergy-saving renovation projectReplace the original Roots blower.MainIt is widely used in sewage treatment (municipal, industrial and other), material transmission, food and medicine, textile printing and dyeing, leather manufacturing, glass manufacturing, iron and steel metallurgy, flue gas desulfurization and other projects.

Structure of magnetic levitation blower

 The main components include high-efficiency centrifugal impeller, magnetic bearing, permanent magnet synchronous motor and special frequency converter. This type of fan adopts an integrated design, and its high-speed motor, frequency converter, magnetic bearing and micro-processing control panel are all designed and integrated.Magnetic Bearing and Permanent Magnet Motor Technology.

high speed permanent magnet synchronous motor

 Permanent magnets are installed on the spindle of the motor to ensure the magnetism of the spindle. The coil wound by the silicon steel sheet of the stator of the motor generates oscillating magnetic force, and the speed and oscillating magnetic field are consistent during operation to achieve synchronization. The permanent magnet motor uses magnetic bearings and hasNo mechanical friction, low noise, low vibration and long lifeThe characteristics of the highest speed up35000r/min.

magnetic levitationMotorThe composition

Rotor:Composed of permanent magnets and impellers, it is the main component of the fan and is responsible for generating wind

Stator:It is composed of electromagnet and motor, which is the driving part of the fan and is responsible for providing magnetic force and power.

Controller:Composed of sensors and circuit boards, it is the control component of the fan, responsible for detecting and adjusting the position and speed of the rotor

magnetic suspension bearing

The shaft is stably suspended by controlled electromagnetic attraction, and the shaft is not subject to any mechanical resistance during rotation, soHigh efficiency, no wear, no maintenance, no lubricating oil, no oil.

high speed centrifugal impeller

 Impeller usedternary flow theory designAnd parameter optimization, so that the impeller efficiency maximizes, the working area is wide, its material is made of high-strength forged aluminum or titanium alloy,Strong resistance to deformation;And five-axis machining technology to ensure the accuracy of the impeller manufacturing,better anti-corrosion performance. The working point of the impeller was measured by experts from the National Fluid Laboratory.Maximum efficiency up85%.

High efficiency frequency converter

 It is a key component in the magnetic levitation blower. Its function is to convert DC power to AC power to supply power to the motor of the magnetic levitation blower,Achieve precise speed regulation, high-quality start-stop and flexible power adjustmentand other functions.

Process parameters

Power:Cover7.5kWTo200kw, The series has a variety of models, which can meet the needs of different users.

Boost:Cover20kPaTo120kPaIt can effectively cope with the pressure change caused by the water level change, so as to quickly respond to the change and meet the demand of the process condition with the pressure change.

High speed motor:High-speed permanent magnet synchronous motor, directly coupled with the impeller drive, eliminating mechanical transmission loss,Efficiency up85%Above.

Noise:Below85decibelIt is within the range of safe noise that humans can withstand, and because there is no mechanical friction, the noise comes from high-speed air flow, which is a high-frequency noise with short transmission distance and easy to eliminate. The noise can be effectively reduced by pipe covering.

Advantage Features

Energy saving and high efficiency

Because it uses magnetic bearings,No contact, no friction, no lubrication, not easy to cause contact and mechanical loss, and no variable speed adjustment is required. At the same time, the blower can also adjust the speed according to the requirements of the working conditions, saving more electric energy for users; the most important thing is that it can also adjust the speed to achieve changes in pressure and flow according to changes in external factors,Energy saving compared to traditional fans30%Significant effect of energy saving and emission reduction.

 

High cooling efficiency

The cooling system of the fan is air-cooledorThe self-circulating water cooling method avoids damage to the motor caused by motor heating,Extend the service life of the motor and improve the stability of the equipment.

 

Remote Control

The fan usesPLC GPRScontrol technology,Intelligent management, convenient operation. It not only realizes the overall central control of the fan operation, but also realizes the remote monitoring of the whole process of the fan operation state. Once the fan fails, it can be found immediately and make corresponding treatment measures for remote maintenance and debugging. At the same time, it also has storage, memory and remote acquisition control functions.

 

Silent

Magnetic levitation blower due to no friction, no oil, no gear and other factors,Lower noise level than conventional blowers10dBAbove, improve the working environment.

 

Easy installation and maintenance

Less fault, maintenanceConvenientNo need for lubricating oil maintenance, reduce waste oil and other pollutants emissions,Reduce the cost of use.