2026-04-10Views：
air compressor selection need to know what parameters
working pressure of air compressor]
there are many representations of pressure units. Here we mainly introduce the commonly used pressure representation units of screw air compressors; ① Working pressure, which is often called exhaust pressure by domestic users. Working pressure refers to the highest pressure of the air compressor discharge gas; ② Common working pressure units are: bar or Mpa ,1 bar = 0.1 Mpa ; ③ In general, users usually call the pressure unit: Kg (kg),1 bar = 1Kg.
Volume flow of air compressor]
① volume flow, domestic users often called displacement. The volume flow refers to the volume of gas discharged by the air compressor per unit time under the required exhaust pressure, which is converted to the intake state. ② Volume flow unit: m3/min (cubic/min) or L/ min (l/min),1m3 (cubic) = 1000L (l); ③ General, commonly used flow unit: m3/min (cubic/min); ④ Volume flow is also called displacement or nameplate flow in our country.
air compressor power]
① Generally, the power of the air compressor refers to the nameplate power of the matching drive motor or diesel engine; ② The unit of power is: KW (kilowatt) or HP (horse/horsepower),1KW & asynmp; 1.333HP. Selection of working pressure (exhaust pressure): when the user is going to purchase an air compressor, he must first determine the working pressure required by the air end, add a margin of 1-2 bar, and then select the pressure of the air compressor (the margin is considered from the installation site of the air compressor to the actual air end
the pressure loss of the pipeline distance, according to the length of the distance between 1-2 bar, properly consider the pressure margin).
[The relationship between power and working pressure and volume flow]]
under the condition of constant power, when the rotation speed changes, the volume flow air compressor and working pressure also change accordingly. For example, for a 22KW air compressor, the working pressure is determined to be 7bar during manufacture, and the rotation speed is calculated according to the technical curve of the compressor host, and the displacement is 3.8 m3/min; When the working pressure is determined to be 8bar, the rotating speed must be reduced (otherwise the driving motor will be overloaded), the air compressor displacement is 3.6 m3/min; because the speed is reduced, the exhaust is reduced accordingly, and so on.
As the screw oil-free and water-lubricated screw air compressor is a stainless steel single screw main machine for the whole series, it can save more than 15% energy than the secondary dry twin screw and more than 36% energy than the primary twin screw. Oil-free screw air compressor reaches the energy-saving level of oil machine. Avoid frequent and high maintenance of dry screw. Energy saving: Grankering single-screw main engine with high volumetric efficiency is adopted, which has low specific power and is more efficient and energy-saving than twin-screw oil-free air compressors.
The screw air compressor is an oil-injected single-stage twin-screw compressor. It adopts high-efficiency pulley transmission to drive the main engine to rotate for air compression. The compressed air in the main engine is cooled by oil injection. The air and oil mixed gas discharged from the main engine are coarse and fine. Two separate
Shenzhen specializes in air compressor factory, Shenzhen screw air compressor factory air compressor consumption technology and quality is also very related to the quality is not good, the machine function is greatly reduced, easy to various problems attack or use of high life expectancy, etc., so the purchase of air compressor
The ratio of goods to goods is a common occurrence when users purchase "permanent magnet variable frequency air compressor. No matter what brand of "permanent magnet variable frequency air compressor" is to understand the quality of the brand, the use of the site after many years of operation is stable. The "permanent magnet variable frequency air compressor" with stable gas supply is what you really need. Facing the dazzling array of air compressor brands in the market, as a business owner, you can personally visit our company when purchasing, look at our production workshop, and understand the product concept of "granklin Group.
The current of the 1. oil-free air compressor is too high: the common reasons for this failure are as follows: 1. The main engine fails 2. The exhaust pressure is too high 3. The voltage is too low: Generally, the power of the oil-free air compressor is Rated, therefore, according to the public
There are several ways to classify the air compressor: 1, according to the gas transmission, the so-called gas transmission refers to the air compressor work each minute of the exhaust gas conversion to the volume of the suction state, small exhaust volume below 10 cubic meters/minute,
The simplest point is to see whether it contains a frequency converter, and the second is to see whether the motor changes its speed according to the actual working conditions during operation. There are many factors to look. Speed directly affects the oil pressure and high and low pressure. I can see whether there is frequency conversion in current or not. Literally understood, the speed of the variable frequency air compressor is almost the same as the fixed frequency under the working state. When the air compressor is not in the pumping state, the motor frequency will automatically drop and the input power will be reduced to achieve the effect of energy saving.
Therefore, the suction pressure of the compressor can be appropriately increased, and a high-efficiency cyclone inlet separator can be added in one stage of suction to further eliminate the resistance of the air inlet pipe network, and a higher suction pressure can be obtained while ensuring sufficient processing air. The pressure drop between the 1.2 compressor sections is reduced. The pressure drop between the compressor stages is also an important reason for the power consumption of the compressor.
What is the root cause of the low gas production of the oil-free air compressor? During the operation of the oil-free air compressor, insufficient gas supply occasionally occurs. What is the reason? In fact, machine selection, air leakage, gas production standards, machine wear and other aspects may lead to gas supply
Many enterprises in the purchase of permanent magnet variable frequency air compressor, often because of the permanent magnet variable frequency air compressor industry is not familiar with, do not know what kind of permanent magnet variable frequency air compressor brand. Generally speaking, in the domestic permanent magnet variable frequency air compressor market, there are several commonly used
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