Air compressor selection and how to improve the displacement

2026-04-10Views:

Shanghai granklin (group) co., ltd. is a domestic professional compressed air system manufacturer. our products include screw air compressor, permanent magnet frequency conversion air compressor, oil-free air compressor, medium pressure air compressor, two-stage compressed air compressor, water lubricated air compressor and complete sets of compressed air post-treatment equipment production, sales and service.

Granklin water-lubricated air compressors are widely used in laboratories, water treatment, biopharmaceuticals, environmental protection, printing, ships, machinery, textiles, petrochemicals, precision electronics, instrumentation, spraying, tobacco, nitrogen production, food processing, optics, Any field that requires clean compressed air, such as national defense scientific research.

Then choose the pressure of the air compressor. Of course, the size of the pipeline diameter and the number of turning points are also factors that affect the pressure loss. The larger the pipeline diameter and the fewer turning points, the smaller the pressure loss; on the contrary, the pressure loss The greater the loss.

Therefore, when the distance between the air compressor and each gas end pipeline is too far, the main pipe diameter should be appropriately enlarged. If the environmental conditions meet the installation requirements of the air compressor and the working conditions permit, it can be installed nearby at the gas end.

The second step of air compressor selection: determine the corresponding volume flow;

when selecting the air compressor, the volume flow rate of all gas-using equipment should be understood first, and the total flow rate should be multiplied by 1.2; Learn the volume flow parameters of gas-using equipment from gas-using equipment suppliers for air compressor selection; The transformation of air compressor station can refer to the original parameter values and the actual gas consumption situation for selection;

the third step of air compressor selection: determine the power supply capacity. Under the condition of constant power, when the speed changes, the volume flow and working pressure also change accordingly, the speed decreases, and the exhaust gas decreases accordingly, and so on.

Cooling effect: The temperature of the gas will increase during the compression process, and the temperature of the air compressor rotor and the casing will also increase accordingly. Therefore, during the suction process, the gas will be heated by the rotor and the casing and expand, so it will be reduced accordingly. Inhalation volume.

How to improve the traditional air compressor displacement is to improve the output coefficient, usually using the following methods:

1. When necessary, clean the cylinder and other parts.

2. The correct choice of the size of the clearance volume;

3. Adopt advanced cooling system;

4. Keep the tightness of the piston ring;

5. Reduce the resistance of gas inhalation;

6. Keep the air valve and stuffing box tight;

7. Maintain the sensitivity of the suction valve and exhaust valve;

dryer and cooler gases should be inhaled;

9. Appropriately increase the speed of the air compressor;

10. Maintain the tightness of the output pipeline, air valve, air storage tank and cooler;

selection of standard pressure parameters to match the working pressure control: that is, how much air pressure is required at work. Most air compressors for laboratory use are adjustable at 0-8BAR (about 0-8kg), which meets the air pressure requirements of experimental equipment.

Old irons who need to purchase water-lubricated air compressors may as well come to granklin group to ask for a price. the water-lubricated air compressor head produced by the factory's own brand is also the product with the highest sales volume in the field of oil-free air compressors.

More Recommendations

  • 2026-04-10

    Does the head of the oil-free air compressor automatically replenish water?

    Granklin Group produces water-lubricated air compressors with fully automated water replenishment. No manual operation is required, and the water in the water vapor flow is replaced many times through the automatic control system, which does not affect the work of the air compressor head. Compared to other forms of oil-free air compressor, no

    View details
  • 2026-04-10

    Key points of moisture-proof maintenance of screw air compressor

    If it is moisture-proof maintenance, you can refer to the following methods: 1. Check whether there is water around the air compressor. Find out the foundation, geological structure, flood control facilities and emergency rescue facilities around the air compressor room in detail, and find out the hidden dangers and weak links.

    View details
  • 2026-04-10

    Medical air compressor can be used for pharmaceutical factory production filling

    The "water-lubricated oil-free air compressor" produced by Shanghai Granklin Group is widely used in all aspects of the medical industry. The "medical air compressor" cannot tolerate a trace of carelessness, and the exhaust must be oil-free.

    View details
  • 2026-04-10

    Working principle of single screw air compressor

    [Structure diagram of single screw compressor] [Figure [Analysis Single screw air compressor belongs to positive displacement compressor. By compressing the gas in a variable volume, the volume of this part is reduced and the pressure is increased. The core structure of the compressor is finished by a special machine tool and consists of a screw with six spiral grooves, with one on both sides.

    View details
  • 2026-04-10

    The birth of oil-free air compressor brand

    Oil-free air compressor is divided according to whether the compressed air contains oil or not, corresponding to oil air compressor or micro oil air compressor. Oil-free air compressors are distinguished according to different compression forms or different host structures.

    View details
  • 2026-04-10

    What are the advantages and disadvantages of water lubricated screw air compressor

    What are the advantages and disadvantages of water lubricated screw air compressor. Long ago, it was often said that the water-lubricated air compressor was not easy to use because of its high cost and high failure. This statement is too general and simple to understand.

    View details
  • 2026-04-10

    Oil-free Air Compressor Select Water Lubricated Air Compressor

    Completely oil-free gas exists, and the "water-lubricated air compressor" produced by Shanghai Granklin Group is currently popular in the domestic market ". It is fully in line with the conditions of "oil-free lubrication air compressor". The air compressor head is made of stainless steel. When working, the air compressor head is filled with lubricating water. What is it like after the atmosphere is sucked in, and it is compressed and discharged. What kind.

    View details
  • 2026-04-10

    How long does it take to replace the lubricating oil of the screw air compressor?

    Basically, according to each air compressor factory has a standard for its own air compressor, it is best to look at the instructions! Some manufacturers also have 2000 hours of oil and 4000 hours of oil. Some are calculated from the sale to the customer, the initial insurance time and the later period.

    View details
  • 2026-04-10

    How to choose the right air compressor

    As an indispensable power equipment, air compressor plays an irreplaceable role in industrial production. So how to choose a suitable air compressor? The first step, the preliminary selection. According to the air consumption of the equipment and the actual use of pressure to determine the empty

    View details
  • 2026-04-10

    One of the series of energy saving air compressor water lubrication oil free air compressor

    Water-lubricated air compressor is the main product of Shanghai granklin group. the head of water-lubricated air compressor can be used in permanent magnet variable frequency air compressor, screw air compressor, water-lubricated air compressor and oil-free air compressor. the products are the best in the domestic industry in the field of energy-saving and oil-free air. The energy efficiency grade of air compressor is divided into three levels, the first level of energy efficiency reaches the advanced level, energy saving, the second level of energy efficiency is more energy-saving, and the third level of energy efficiency is high energy consumption, which is the market access index.

    View details