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Air compressor operating procedures

The air compressor is one of the main mechanical power equipment of many enterprises, and it is very necessary to maintain the safe operation of the air compressor. Strictly implementing the air compressor operating procedures will not only help prolong the service life of the air compressor, but also ensure the safety of the air compressor operators. Let's take a look at the air compressor operating procedures.

What is the function of the refrigerated dryer

The freeze dryer is a freeze dryer, and it has two main functions: it can reduce the temperature of the compressed air; it can remove the water vapor contained in the air. Freeze dryers originated from vacuum freeze drying technology in the 1920s, developed over decades, and made great strides in the past 20 years. In the 21st century, vacuum freeze-drying technology has become more and more popular due to the incomparable advantages of other drying methods. In addition to its wide application in the fields of medicine, biological products, food, blood products and active substances, its application scale and field are still expanding. Extended information principle A freeze dryer (hereafter referred to as freeze-drying) first freezes a water-containing substance into a solid state, and then sublimates the water in it from a solid state to a gaseous state to remove the water and preserve the substance. In the process of drying the compressed air, freeze-drying is performed by lowering the temperature of the compressed air to precipitate the moisture in the compressed air. Freeze dryers (coolers) work like refrigerators.  After the compressed air passes through the refrigerated compressed air line, the temperature of the compressed air drops to the required temperature to meet drying requirements.

What are the common types of vacuum pumps?

There are many types of vacuum pumps, which can be divided into: gas delivery pump and gas capture pump according to the working principle; according to the degree of vacuum, it can be divided into: rough vacuum degree, high vacuum degree and ultra-high vacuum degree. According to the working principle: 1. Gas delivery pump: 1. Variable volume vacuum pump 1) Reciprocating 2) Rotary vane type: (1) Oil seal type: rotary vane, spool valve type, fixed plate type, trochoid type, multi-chamber rotary vane type; (2) Dry screw; (3) Liquid ring type; (4) Roots vacuum pump; 2. Momentum transmission pump 1) Molecular vacuum pump: traction molecular pump, turbo molecular pump, compound molecular pump; 2) Jet vacuum pump: liquid jet vacuum pump, gas jet vacuum pump, steam jet vacuum pump; 3) Diffusion pump: self-purification diffusion pump, fractionation diffusion pump; 4) Diffusion jet pump; 5) Ion transport pump; 2. Gas capture pump 1. Adsorption pump; 2. Getter pump; 3. Getter ion pump: evaporation ion pump, sputtering ion pump; 4. Cryogenic pump;

How to reduce the vibration noise of the screw air compressor body

Controlling the noise of the air compressor controls the vibration. The vibration of the air compressor is mainly transmitted to the outside through the foundation and piping system. Vibration control mainly adopts vibration isolation control. The main measures are as follows: 1. Use vibration isolators The vibration isolator forms an elastic connection between the air compressor and the foundation, and reduces the amplitude to achieve vibration isolation, which is the key link of vibration isolation. 2. Adopt vibration isolation joint suspension foundation The vibration isolation joint suspended foundation cuts off the way the air compressor vibration is transmitted to the soil. The vibration isolation joint is 150-200mm wide, filled with dry sand, dry sand and industrial felt are laid under the foundation, and the thickness of the felt is 20-40mm. 3. Adopt vibration isolation trench In some cases, trenching on the ground can be adopted to cut off the vibration mainly propagating by surface waves along the ground. The above is the editor's personal opinion on how to reduce the vibration and noise of the screw air compressor body. I hope it will help you when choosing a screw air compressor. Because each air compressor manufacturer has differences in production batches and models, when the machine has problems or needs maintenance and inspection, everyone should contact the air compressor manufacturer, which can easily solve the problem of air compressor production. The process always encounters problems.

How to correct parameters after screw air compressor maintenance

We all specify that after the cleaning, maintenance and installation of the machine are completed, the operating parameters of the screw air compressor should be adjusted to ensure the normal operation of the screw air compressor. The following editor will briefly talk about how to correct the screw air compressor after maintenance. parameter. (1) Preparations before starting the screw air compressor: Belt (coupling) calibration: If the air compressor is driven by a belt, the tightness of the belt should be between 10 and 20 mm. If the air compressor is driven by a coupling, after installation, the motor and the main engine should be manually turned to check the balance when the coupling rotates. Screw air compressor couplings basically use elastic couplings, which can be ignored when the deviation of the solid balance is not large. Steering correction of the main engine of screw air compressor: If the main power supply is removed during the maintenance process, after the power supply is connected, pay attention to the forward and reverse rotation of the motor. The steering of the motor should be based on the steering of the main engine. Steering icon. Correction method: exchange any two power lines in the three-phase power supply. (2) Loading, unloading, proportional value effect: when setting these three parameters, the unloading value should be determined first, and the unloading value should be determined according to the combination of the rated pressure of the air compressor and the pressure required by the gas end, and the unloading value should be determined. After setting the loading value, the pressure difference between the two should be between 0.1 and 0.2MPa. After setting the unloading and loading values, set the proportional value. The proportional value should be set between the unloading value and the loading value. The screw air pressure Machine example description: If a factory needs the air supply pressure of the air compressor to be 0.8MPa, and the air supply requirements are relatively stable, three parameters should be set as follows: the unloading pressure is set to 0.8MPa, the loading pressure is set to 0.65MPa, and the proportional control pressure is set. Set between 0.73 and 0.75MPa. Correction method of screw air compressor: Set this parameter in the microcomputer (if the control of the air compressor adopts button control, the loading and unloading parameters should be adjusted from the pressure switch, and the proportional value should be on the unloading valve. The adjustment nut of the proportional valve adjust this value). (3) Positive pressure effect in the unit: the internal pressure of the unit should be between 0.2 and 0.45MPa. Correction method: the pressure value should be carried out when the unit is unloaded, and the value should be adjusted on the adjustment nut of the smallest pressure valve. In order to facilitate reading the set value, the pressure detection point should be taken before the smallest pressure valve Install a pressure gauge (some microcomputers have the function of displaying internal pressure parameters, if there is no such function, a pressure gauge should be installed before the smallest pressure valve). (4) The high temperature protection value is positive: when the screw air compressor is working normally, its temperature should be between 65 and 98 °C. The automatic shutdown temperature of over-temperature protection shall not exceed 105℃. Correction method: adjust the high temperature automatic shutdown temperature value in the panel, and 1.2 is appropriate (ie, enlarge the margin by 20%).

Air compressor market development

The market size of my country's air compressor industry is growing at a growth rate of more than 8%, and the growth rate in 2010-2011 even exceeded 28%, and the market scale is expanding rapidly. However, in such a huge market, for a long time in the past, foreign-funded enterprises controlled most of the market. According to the data from Qianzhan.com, in 2009, there were nearly 400 production enterprises in my country's air compressor industry, of which nearly 90% were domestic-funded enterprises, and the total sales revenue was about 6 billion yuan, accounting for 40% of the entire industry; the number of foreign-funded enterprises was close to 10%, and the total sales revenue is about 9 billion yuan, accounting for 60% of the entire industry. However, domestic-funded enterprises continue to strengthen technological innovation. Leading domestic-funded enterprises in the industry, such as Kaishan Co., Ltd., continue to forge ahead in technology. The performance of the company's products has reached the international level, and has achieved some gains in the high-end market dominated by foreign investment. With the continuous improvement of product performance and the continuous upgrading of technology, the market share of domestic enterprises has also increased year by year. Taking screw air compressors as an example, from 2009 to 2011, the sales of screw air compressors increased from 14,800 units to 32,800 units, with a compound annual growth rate of 48.87%, and the market share increased from 14.10% in 2009 to 19.40%; From 8,000 units to 20,100 units, the market share increased from 0.80% to 11.90%, and the development is very rapid.