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Oil free air compressor on the fuselage and the surrounding environment cleanliness requirement is very high, every 2000 h operation, to eradicate the cooling surface dust, the fan bracket must be cooler on scavenging hole cover open, with blowing dust gun to purge of cooler, until the cooling dust purging clean appearance.Without oil cooler of air compressor in the work after a period of time, due to the calcium, magnesium carbonate, such as material in the cooling water will form scale in them, the serious influence the cooling effect, eventually lead to exhaust temperature rises.This not only affects daily use of gas, but also causes energy consumption to rise.Therefore, regular cleaning is required.

Screw air compressor maintenance can be divided into minor repairs to repair and overhaul, only about distinguish between them, there is no absolute boundaries, and the specific condition of each unit is different, so different division. The general minor repairs are to eliminate individual defects of the compressor and to replace the individual parts, including: inspection of the carbon footprint of the rotor at the inlet;Check the inlet valve cylinder diaphragm;Check and tighten the screws in each part;To clean air filters;Eliminate air compressor and pipe leakage and oil seepage;To clean the cooler and replace the failure valve;Inspect the safety valve and pressure gauge. The medium repair generally runs 3000 ~ 6000h for once.In addition to the whole work of minor repair, the repair and replacement parts should be removed, such as removing oil and gas drums, replacing oil filter and oil separator, and inspecting the wear condition of the rotor.Disassemble and adjust the heat control valve and pressure maintenance valve to restore the machine to normal operation. Air compressor host is the core part of the air compressor, in a state of high speed for a long time, because the service life of components and bearing has its corresponding to its operation to a certain time or after a fixed number of year must be preventive overhaul, overhaul of the main content includes: (1) overhaul host and gear box;(2) motor bearing and butter;(3) check or replace the coupling;(4) cleaning and maintenance of air cooler;(5) clean maintenance oil cooler;(6) check or replace the check valve;(7) check or replace the relief valve;(8) clean water vapour separator;(9) replace lubricating oil;(10) the heat dissipation surface of the cleaning unit;(11) check the working conditions of electrical components;(12) check the protection function and its setting value;(13) check or replace the pipes;(14) check the contact information of electrical components.

Compressed air is the most important power source in the production industry today, and the compressed air system of screw air compressor is very important for the production enterprise.The correct use of screw air compressor purification equipment dryer and filter in the system, can improve the service life of the pneumatic control system, reduce control system failure and fault, has important significance to improve the work efficiency and economic benefit. So how to choose dryer based on Screw Air compressor ?According to the following two side : 1.Type of screw air compressor If using oil lubricated screw air compressor, its oil content indicator >15mg/m3 should be equipped with high efficiency and precision filter and select the external heating type micro-heat regeneration dryer. 2.Exhaust temperature and exhaust pressure of screw air compressor According to the exhaust temperature and exhaust pressure of screw air compressor, the drying device and supporting equipment can be selected. When the exhaust temperature above 35 ℃, consideration should be given before the drying machine and oil removal filter equipment after cooler, the gas temperature drop to below 35 ℃.When low exhaust pressure is lower than 0.5mpa, no heat regeneration and micro-heat regeneration dryer should be used, and the external heating, residual heat and internal heat regeneration and drying device should be used with large filling volume and deep adsorption.When the exhaust pressure below 0.2 MPa, again after freeze drying machine should be treated with hot regeneration secondary drying device to get to 40 ℃ under good drying effect.

For air compressor, high temperature has been one of the main causes of its failure.The temperature of the air compressor is mainly divided into the environment temperature, inlet temperature, the temperature of exhaust gas temperature, lubricating oil and so on, each has its standard, a temperature over the temperature too high, can lead to adverse consequences. What is the ambient temperature of the screw air compressor?The ambient temperature of the screw air compressor is too high, which is that the air intake temperature and the compressed air are too high. Screw air compressor suction temperature to 38 ℃, general won't have any bad effect.Normal screw air compressor exhaust temperature, environment temperature and between 50 to 55 ℃ is normal.38 = 93 + 55 ℃, the temperature long running on the effects of a screw air compressor.But if the air compressor exhaust temperature over 93 ℃, then explain the problems of air compressor cooling.It can make the air compressor prone to high temperature, the compression ratio of air compressor decreases, and the volume of gas production decreases.In addition, the quality of lubricants and service life will be reduced. Exhaust temperature not too high, because of the exhaust gas temperature and oil temperature has a lot to do, if the oil temperature is too high, the air compressor running for a long time can cause air compressor oil sticking, carbon deposition, and high viscosity change a series of problems.Dust in the air to air compressor makes a lot of damage, if in the dust mixed with the lubricating oil, oil makes the turbidity, easy to cause the oil temperature and oil temperature, accelerate the deterioration of oil, to speed up the movement part of friction and wear, shorten service life.

1. Frequent loading and unloading operation analysis of screw air compressor 1.1 failure of solenoid valve Solenoid valve is to shut down after the electromagnetic coil current channel control switch valve parts, solenoid valve malfunction can cause the screw air compressor cannot normal on-off, directly affect the normal operation of the screw air compressor and unloading. 1.2. Pressure switch failure Pressure switch through the screw air compressor system pressure change control and change the on-off solenoid valve power supply, once the failure pressure switch, leads to the screw air compressor unit operation occurs frequently loading and unloading. 1.3. The volume of storage tanks is too small The volume of gas storage tank is too small to cause the gas to be stored too little, causing the air to fluctuate greatly, causing the air compressor to load and unload frequently. 2. Frequent loading and unloading of screw air compressor The frequent loading and unloading of the three parts of the pressure switch, solenoid valve and the gas tank are usually caused by the failure of the three parts. The three parts should be repaired and checked in this case, and the more if necessary

The type and principle of air compressor, air compressor (aircompressor: English) is the main body of the gas source device. It is a device that converts the mechanical energy of the prime motor (usually motor) to the gas pressure energy, and is the pressure generating device of the compressed air. The types and principle, many different types of air compressors, according to the working principle can be divided into the compressor, compressor speed, volume of the compressor working principle is the volume of compressed gas, the gas molecules in the unit volume density increased to increase the pressure of compressed air; working principle of speed compressor is to improve the speed of gas molecules the kinetic energy to make the gas molecules has transformed into gas pressure energy, thereby increasing the pressure of compressed air. Commonly used air compressors are piston air compressors, screw air compressors, and screw air compressors. They are divided into two screw air compressors and single screw air compressors, centrifugal compressors and sliding vane air compressors, and scroll air compressors. (below) is the definition of all kinds of compressors. The compressors such as cam, diaphragm and diffuser are not included, because they are relatively small in size and special in use.

The selection of air compressor is very important to both the user and the air compressor equipment. The selection too large is too wasteful, and the type selection too small may cause the air compressor to be in the state of loading for a long time or not to use gas or pressure to go up, and so on. Air compressor selection generally follows the following steps: first, determine the working pressure, then determine the corresponding volume flow, and finally the power supply capacity. Selection of screw air compressor: first step: determining working pressure When the air compressor is selected, we must first determine the working pressure needed by the air end, add the allowance of 1-2 bar, and then choose the pressure of the air compressor. Of course, the size of the pipe path and the number of turning points are also the factors that affect the pressure loss. The greater the pipe path and the less turning point, the smaller the pressure loss, and vice versa, the pressure. The greater the loss. Therefore, when the distance between the air compressor and each gas end pipeline is too far away, the path of the main path should be properly enlarged. If the environmental conditions conform to the installation requirements of the air compressor and the conditions permit, it can be installed near the gas end. Second steps of air compressor selection: determining corresponding volume flow rate 1, when selecting the air compressor, we should first understand the volume flow of all the gas consuming equipment, and multiply the total volume of the flow by 1.2. 2, to understand the volume flow parameters of gas consumption equipment and select the type of air compressor. 3. The transformation of air compressor station can refer to the original parameter value and the actual gas consumption. Third steps of air compressor selection: determine power supply capacity When the power is constant, when the speed changes, the volume flow and the working pressure also change correspondingly. The speed is reduced, and the exhaust is correspondingly reduced, and so on. The selection power of screw air compressor is to meet the working pressure and volume flow capacity, and the power supply capacity can meet the power used by the matching driving motor.

Why regularly clean the oil free air compressor? Oil free air compressor on the fuselage and the surrounding environment cleanliness requirement is very high, every 2000 h operation, to eradicate the cooling surface dust, the fan bracket must be cooler on scavenging hole cover open, with blowing dust gun to purge of cooler, until the cooling dust purging clean appearance.Without oil cooler of air compressor in the work after a period of time, due to the calcium, magnesium carbonate, such as material in the cooling water will form scale in them, the serious influence the cooling effect, eventually lead to exhaust temperature rises.This not only affects daily use of gas, but also increases energy consumption.Therefore, regular cleaning is required .

Screw air compressor lubrication system general main spindle and motor gear pump gear oil pump, oil filter, oil cooler, the oil in the crankcase box, plunger type oiler, connecting pipe and other parts.The reason for the low pressure of screw air compressor is that one or more components of these components fail or are damaged.The reasons for low lubricating oil pressure of common screw air compressor are as follows: 1. The oil pressure gauge of the screw air compressor is not correct; 2. Low oil level and insufficient oil; 3. Blockage of oil filter box or oil filter in the crankcase; 4. The lubricating oil quality is not in accordance with the regulations; 5. Excessive wear gap of crankshaft connecting rod; 6. Excessive wear gap of oil pump gear; 7. Oil pump shaft oil seal wear;

Now the hot weather is coming, small make up remind everyone ready to heat, of course, to give yourself the heat at the same time, air compressor users also don't forget to give their own work on "heat" screw air compressor, small make up below analysis under the screw air compressor high temperature causes: 1. The surrounding environment impact: screw air compressor air compressor with other heat sources, air compressor is placed near the air circulation is not smooth, lead to condensation heat, air compressor, when the chance that baffle not closing, leads to the formation of a fan is not strong cooling airflow; 2. Internal causes of screw air compressor: A). The air compressor radiator is blocked: during the long operation of the air compressor, the surrounding dust is relatively large, resulting in the surface adhesion of the radiator with a layer of dust and oil scale, which affects the heat dissipation effect. B). Oil filter is too dirty: the oil filter is too dirty, and it is difficult for the lubricating oil to enter the air compressor normally. C). The cooling oil surface is too low. D) the quality of lube is not good. E). Excessive exhaust pressure: if the exhaust pressure exceeds the rated pressure, the long-term operation will result in a sharp increase in the overloading temperature of the air compressor and the shutdown. Solution for high temperature of screw air compressor: 1. When installing the screw air compressor, choose the position of relative ventilation to avoid the condensation of hot air during air compressor operation. 2. The air compressor should be shut off when the screw air compressor is running, and do not operate the baffle for a long time to avoid the cooling effect of the fan. 3. The internal parts of the screw air compressor should also be checked frequently, so that the air compressor is too hot due to the problem of internal parts of the air compressor.

Jack hammer noise is a very tangled problem, I think a lot of friends in use will have such feeling, Jin Shengli today drill here say to everyone about the noise of the drill, to take you to look at the noise of the drill are derived from there, and then for noise removal. The noise in the work of rock drill mainly comes from four aspects: 1) noise from exhaust emission. 2) the noise generated by the piston striking the bit. 3) the vibration of the drill parts and the drill rod caused by the impact. 4) impacted rock vibration. The integrated management method to the above several kinds of noise, abroad is the whole drill wrapped up with tubular muffler, such not only eliminate the exhaust noise, but also avoid the solid noise (i.e., drill noise reflections), even no longer transmission piston impact the noise of the shank, and is able to cut.Another way is to cover the body with a fibrous sheath, which consumes sound waves .

Because of oil-free screw air compressor screw on the compression process, the whole host of lubrication, sealing and cooling by water, as a result, the letter but oil-free air compressor is oil-free compressed in the true sense. 1) unlubricated structure: the whole machine has no oil to participate in, and the lubricant we use is water, so it can provide users with very clean compressed air.Operation and maintenance costs are extremely low (no air compressor oil, oil fine separation core, oil filter). 2) ideal isothermal compression: because the water cooling performance is far higher than that of air compressor oil, we only 40 ℃, the machine running temperature close to the suction temperature, achieve ideal isothermal compression efficiency. 3) real environmental protection products: because there is no lubricating oil, there is no oil pollution, and all the parts are made of anti-rust materials, such as stainless steel, copper alloy, ceramic and carbon fiber, etc.High precision water filter ensures that the water is kept clean. 4) high efficiency: the pure water used by the BEST-F(N) series air compressor has three functions: sealing, cooling, and lubrication, which is 20% higher than the normal dry compressor.

June 29-30, 2017, hosted by the compressor branch of China general machinery industry association, the first professional training class on energy saving technology in air compressor industry held by dingli media was held in Shanghai.The compressor branch invited a number of experts to train more than 40 students on the energy measurement and calculation of the compressed air project section.

First, due to the screw air compressor suction natural contains impurities such as water and dust particles in the air, after compression screw air compressor in compressed air contains moisture, impurity particles, part of the lubricating oil will be because of the high temperature into a gas.If the above impurities of compressed air directly to the pneumatic system is used, can make the reliability of pneumatic device system is greatly reduced, and shorten its service life, increase the production cost of enterprises. In addition, if the screw air compressor backend does not install the precision filter, compressed air is inhaled from the pipe wall off the rust on solid impurities, if these impurities in the direction of sliding valve clearance or pressure control valve seat, will cause bad action. When the air temperature drops, the water is saturated.If the water enters the control loop and the element, it will rust the network system and parts, and wash away the lubricating oil film.Moreover, in special industries such as pharmaceuticals and food, the rules must be used to remove bacteria filters and deodorant filters. Precision filter is the main function of screw air compressor compressed air of solid particles, tiny impurities such as dust, and the moisture in compressed air, oil mist there was a block effect, to be completely filtering of moisture in compressed air, need to be installed at the rear end of the precision filter, compressed air drying machine for processing.