Small Rotary Screw Compressor

The GA series small screw compressor is equipped with a high-efficiency permanent magnet motor, which has excellent energy-saving performance, smooth operation and low noise, allowing it to be installed close to the point of gas consumption.

Screw air compressor is a positive displacement gas compression machine whose working volume makes rotary motion. The compression of gas is achieved by changes in volume, and the change in volume is achieved by the rotation of a pair of rotors of the compressor in the casing.

Basic structure of screw air compressor: In the body of the compressor, a pair of mutually meshing spiral rotors are arranged in parallel. The rotor with convex teeth outside the pitch circle is usually called a male rotor or male screw. The rotor with concave teeth in the pitch circle is called a female rotor or a female screw. Generally, the male rotor is connected to the prime mover. The male rotor drives the female rotor to rotate. The last pair of bearings on the rotor achieves axial positioning and withstands the pressure in the compressor. axial force. Cylindrical roller bearings at both ends of the rotor position the rotor radially and withstand radial forces in the compressor. At both ends of the compressor body, openings of a certain shape and size are provided. One is for suction and is called the air inlet; the other is for exhaust and is called the exhaust port.

Detailed analysis of the working process of the screw air compressor: the air intake process: when the rotor rotates, the tooth groove space of the yin and yang rotors is the largest when it turns to the opening of the air inlet end wall. At this time, the space between the rotor tooth groove space and the air inlet is Interconnected, because the gas in the tooth groove is completely exhausted during exhaust, and when the exhaust is completed, the tooth groove is in a vacuum state. When it turns to the air inlet, the outside air is sucked in and enters the tooth groove of the yin and yang rotor along the axial direction. . When the gas fills the entire tooth groove, the air inlet side end face of the rotor rotates away from the air inlet of the casing, and the gas in the tooth groove is sealed.

Detailed analysis of the working process of the screw air compressor: the compression process: when the yin and yang rotors end suction, the yin and yang rotor tooth tips will be closed with the casing. At this time, the gas will no longer flow out in the tooth groove. Its meshing surface gradually moves toward the exhaust end. The tooth groove space between the meshing surface and the exhaust port gradually becomes smaller, and the gas in the tooth groove is compressed to increase the pressure.

Detailed analysis of the working process of the screw air compressor: the exhaust process: When the meshing end surface of the rotor rotates to communicate with the exhaust port of the casing, the compressed gas begins to be discharged until the meshing surface of the tooth tip and the tooth groove moves to the exhaust port. At the air end surface, at this time, the tooth groove space between the meshing surface of the yin and yang rotors and the exhaust port of the casing is 0, that is, the exhaust process is completed. At the same time, the length of the tooth gap between the meshing surface of the rotor and the air inlet of the casing reaches Finally, the air intake process starts again. The permanent magnet synchronous variable frequency air compressor is a new type of air compressor with excellent quality, high efficiency and energy saving. Currently, only a few advanced countries and regions in the world have this technology. It is a high-end trend in the future development of the air compressor field. Its design The concepts and technical means have broken through the traditional technical concepts and integrated the current advanced technical elements.

The permanent magnet synchronous variable frequency air compressor always operates under load and has no unloading operation, so there is no waste of power. The efficiency of the permanent magnet synchronous motor is very high. Compared with the efficiency of ordinary motors, it is at least 2% higher. It uses less energy to produce greater torque. The energy saving effect is significant, and the energy consumption is maintained at an economical level.

The permanent magnet synchronous variable frequency air compressor is equipped with a high-efficiency permanent magnet synchronous motor (PM motor). Compared with ordinary motors, it is smaller and more energy-saving. When installed with a dedicated inverter, it will achieve energy saving that ordinary induction motors cannot match. Effectively, it uses high-performance rubidium iron boron permanent magnets that do not lose magnetism at a temperature of 120°C and have a service life of up to 15 years. Its stator coil uses corona enameled wire specially designed for frequency converters, with excellent insulation performance. Due to the strong magnetic permeability of the rotor , the magnetic flux rate is extremely high, so the diameter is very small, and it can be directly installed on the extended shaft of the male rotor, eliminating the need to use a shaft.

Permanent magnet synchronous variable frequency air compressor is equipped with a special frequency converter, which has a wider high-frequency range. With the rapid advancement of technology, variable frequency air compressor has become a high-end machine in the field of energy saving. When operated in conjunction with a permanent magnet synchronous motor, it will achieve ideal energy saving. Effect.

The permanent magnet variable frequency air compressor is a high-quality model among high-end machines.

GA30PM-8 Small screw compressor
Model		GA30PM-8
cooling method		air cooling
Exhaust volume/exhaust pressure (m/min)/(Mpa)		4.8/0.8
Ambient temperature (℃)		-5～+45
Noise dB(A)		72±2
Exhaust temperature (℃)		≤ambient temperature +15℃
Lubricant capacity (L)		22
Gas oil content (ppm)		3~5ppm
transfer method		direct drive
safety valve set pressure		≤Rated exhaust pressure×1.2 times MPa
Dimensions	Length(mm)	1330
	Width(mm)	890
	Height(mm)	1280
Net weight(kg)		680
Connection size		G 1

 

Introduction to small screw compressor accessories

 

1. The high-efficiency aluminum plate-fin heat exchanger is designed with a maximum temperature of 230°C.

2. Strong permeability, good heat transfer performance, improved "temperature and pressure" to reduce energy consumption.

2. The unique fin structure increases the secondary heat exchange area, promotes turbulence, and improves the heat transfer coefficient.

3. The heat exchange area is 30% larger than the standard in the same industry, with a large margin, which improves the heat transfer coefficient and achieves the optimal cooling effect.

4. Achieve the best state of the cooling and lubrication system

5. Easy to clean.

6. Designed to reduce the temperature of super coolant, which can optimize the operating status of vacuum pump components and extend the life of the machine.

7. Efficient cooling capacity to improve operating efficiency

8. Adequate redundant design allows the system to operate normally at the maximum ambient temperature of 43°C

9. Use a temperature control valve to control the temperature of the lubricating oil entering the main engine.

1. Integrated functions of temperature control valve and oil filter seat

2. Ensure the smooth flow of super coolant inside the system

3. The temperature control valve controls the temperature of the exhaust system within a suitable range.

4. Control the oil temperature to not be lower than the ambient temperature +40°C to prevent water vapor in the oil-gas mixture from escaping and causing emulsification of the coolant.

5. The temperature sensing element automatically controls the proportion of coolant entering the cooler and bypassing according to the exhaust temperature to achieve the purpose of temperature control.

6. Keep the temperature of the coolant in the optimal range and extend the service life of the coolant.

7. Easy to install and maintain

8. Simplify pipelines, reduce joints, and reduce pressure loss and oil and gas leakage probability

1. Original imported filter material, foldable filter element

2. The filter paper increases the filtration area by 30%, has long service life and small pressure drop.

3. Large filtration area, small filtration resistance, and good filtration effect

3. Efficient dust removal and effective protection; extend the service life of the main engine, super coolant, negative pressure gas-liquid separator core and other components

1. Eliminate the traditional PLC control scheme and have built-in dual PID control for pressure and temperature, making the control more intelligent.

2. High-performance air compressor-specific touch screen, high-end image, sensitive touch response, adaptive vacuum pump control program, easy to operate.

3. Advanced vector control algorithm optimizes product adaptability while adjusting the best performance output to improve system operation reliability; the frequency converter is compatible with permanent magnet motor control.

4. Reliability and safety protection: For various harsh application situations of vacuum pumps, it provides a high overload service coefficient, configures EMC filters, and sets up a variety of early warning and protection functions to reduce the probability of failure during user use.

1. All models use IE4 level (GB1 energy efficiency) ultra-efficient motors;

2. IP55 protection level.

3. The motor windings and magnets are in a closed and clean space to avoid contamination and demagnetization;

4. All motors adopt SmCo magnet design, with higher demagnetization temperature and more reliable product quality.

5. All motors have winding temperature sensors to monitor the internal temperature of the motor in real time, with high temperature warning and trip protection.

 

Screw air compressor is a common type of air compressor. It is divided into single-screw air compressor and twin-screw air compressor. It adopts high-efficiency pulley transmission to drive the main engine to rotate for air compression. It sprays oil to the air inside the main engine. The compressed air is cooled, and the mixed gas of air and oil discharged from the main unit undergoes coarse and fine separation to separate the oil in the compressed air, and finally obtain clean compressed air. Its main components include the host machine, motor, control system and accessories.

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