What does the permanent magnet screw air compressor do

Permanent magnet screw air compressor is a combination of permanent magnet synchronous motor and screw compression technology of efficient energy-saving air compression equipment, mainly used for industrial production to provide stable, clean compressed air. Its core functions and application scenarios are as follows:

1. core functions

1. compressed air production
   through the meshing rotation of the screw rotors (male rotor and female rotor), the sucked air is compressed step by step to the required pressure (usually 0.7-1.3MPa), and discharged to the gas storage tank or gas equipment.

2. High efficiency and energy saving

   • permanent magnet synchronous motor: Permanent magnets are used to replace the excitation windings of traditional motors to reduce power loss, and the efficiency is 3%-5% higher than ordinary asynchronous motors.
   • variable frequency speed regulation technology: Automatically adjust the motor speed according to the gas demand to avoid frequent start-stop and no-load operation, and the comprehensive energy saving rate can reach 20%-40%.

3. Stable gas supply

   • the continuous compression characteristics of the screw compressor, combined with frequency conversion control, can achieve a pressure fluctuation of less than ± 0.01MPa, to meet the requirements of precision manufacturing for air pressure stability.

4. Low noise and low maintenance

   • operating noise is less than 75 decibels, reducing the impact on the working environment.
   • The structure is simple, the parts are few, the maintenance period is extended to more than 8000 hours, and the risk of downtime is reduced.

2. Application Scenarios

1. manufacturing
   • automobile Manufacturing: Provide stable air pressure for spraying and assembly lines to ensure coating uniformity and equipment action accuracy.
   • Machining: Drive pneumatic tools (such as air cannons, pneumatic fixtures) to improve processing efficiency.
   • Electronic industry: Provide clean compressed air for dust-free workshop to avoid oil pollution of sensitive components.
2. Energy and Chemical Engineering
   • natural gas treatment: As an instrument air source, control valves and automation equipment.
   • chemical production: Drive pneumatic pumps, agitators, or for gas delivery and reactor pressurization.
3. Food and Medicine
   • food Packaging: Provide Class 0 oil-free compressed air to prevent oil from contaminating food.
   • Pharmaceutical Manufacturing: Used for pneumatic control of pharmaceutical production lines, in line with GMP standards.
4. Textile and Building Materials
   • textile Machinery: Drive air-jet loom and pneumatic yarn drop machine to increase production speed.
   • Building materials industry: Provide power for cement mixing and pneumatic conveying to reduce dust pollution.

3. technical advantages

1. high energy efficiency ratio
   • the efficiency of the permanent magnet motor can reach more than 96%, and with the isothermal compression characteristics of the screw compressor, it can save 15%-30% energy than the traditional air compressor.
   • For example, a 75kW permanent magnet screw air compressor can save more than 100000 degrees per year and reduce carbon emissions by about 80 tons.
2. Superior start-up performance
   • the permanent magnet motor can be started directly without a soft start device, and the starting current is only 2-3 times of the rated current, reducing the impact on the power grid.
3. strong adaptability
   • it can be matched with air storage tank, dryer, filter and other post-processing equipment to form a complete air supply system to meet the requirements of air quality (such as dew point and dust content) in different industries.
4. intelligent control
   • integrate PLC or IoT modules to achieve remote monitoring, fault warning and automatic voltage regulation, reducing manual management costs.

4. selection recommendations

1. power matching
   • the model is selected according to the gas consumption (unit: m & sup3;/min) and pressure requirements. For example:
     • small workshop: 7.5-15kW model to meet the needs of pneumatic tools.
     • Medium-sized factory: 37-75kW model, driving multiple equipment.
     • Large production line: more than 110kW models, with frequency conversion control.
2. Air Quality Requirements
   • if the gas point is sensitive to oil (such as food and medicine), Class 0 oil-free model should be selected.
   • General industrial gas optional micro-oil or injection machine type, with post-processing equipment to purify the air.
3. Environmental Adaptability
   • high temperature, high humidity or dust environment needs to choose the model with high protection level (such as IP54 or above), and strengthen the maintenance of the cooling system.