The oil-free air compressor is the main body of the gas source device. It is a device that converts the mechanical energy of the prime mover (usually motor) to the gas pressure energy, and is the pressure generating device of the compressed air.
Requirement standard
The laboratory is high precision instruments, has the characteristics of stable, simple operation, safety, environmental protection and energy saving; at the same time, in order to give the laboratory staff to create a good working environment, especially for noise control requirements are very high; therefore, specially prepared to provide air compressor air compressor air relative to the general industrial experiment and there is a big difference between. Technical personnel engaged in the laboratory air compressor theory for many years, now how to correctly select the laboratory air compressor to provide some suggestions for your reference.
1, parameter matching work pressure control: what is the air pressure needed when working? The air pressure of the air compressor in the laboratory is mostly adjustable at 0 - 8BAR (about 0 - 8 kg), which is in line with the pressure requirements of most experimental equipment. Stable and continuous exhaust volume (usually expressed in L/MIN): refers to the amount of gas flow per minute under rated working pressure, and to ensure continuous and stable gas flow, so the requirement for air compressor working stability is very high. Many brands in the market are mixed. When choosing, we should consider the products of well-known brand manufacturers, such as Yong YB-WWJ's special air compressor.
2, the compressed air quality, oil-free air compressor is the first choice: the oil free air compressor machine material itself does not contain oily substances, and avoids the pollution of the oil terminal to the terminal equipment. Therefore, it is necessary to choose the laboratory quiet oil free air compressor for the guarantee of the air quality. Air quality should reach the following international standard after the air filter is configured. Oilless air compressor and anhydrous mute adsorption dryer and precision filtration system in one design, with drainage function, the dew point temperature of -40 DEG C, the machine has compact structure, beautiful and novel style, stable performance, large gas production, the machine running smoothly, low noise, low temperature, compared with the same products such 0.2-1kw/h.
Working principle
Oil free air compressor is a miniature reciprocating piston compressor, single axis drive motor rotates the compressor crankshaft, through the connecting rod of the drive piston with self lubrication without adding any lubricant will make reciprocating motion, the working volume of the cylinder wall, cylinder head and piston top surface of the structure will change periodically. Piston compressor piston from the cylinder head office begin to exercise, work within the cylinder volume increases, then the gas along the intake pipe, open the intake valve and into the cylinder until the work volume to the maximum, the intake valve closed; reverse piston piston compressor.
When moving, the working volume of the cylinder decreases, and the gas pressure increases. When the pressure in the cylinder reaches and is slightly higher than the exhaust pressure, the exhaust valve opens, and the gas is discharged from the cylinder until the piston moves to the limit position, and the exhaust valve is closed. The above process is repeated when the piston of the piston compressor moves back in reverse. That is to say, the crankshaft of a piston compressor is rotated for a week, and the piston is reciprocating once. The process of intake, compression and exhaust is successively realized in the cylinder, namely, completing a working cycle. The structure design of uniaxial and double cylinders makes the compressor gas flow rate two times of the single cylinder when the rated speed is fixed, and it has been well controlled in the control of vibration and noise.
The whole machine works: the motor runs, the air enters the compressor through the air filter, the compressor compresses the air, the compressed gas opens the one-way valve into the storage tank through the airflow pipe, and the pressure gauge pointer displays up to 8 Bar. When the pressure switch is more than 8 Bar, the pressure switch automatically closes after the pressure of the induction channel, and the motor stops working, and the solenoid valve will discharge the pressure of the compressor head to 0. At this time the air switch pressure is declared, the gas pressure in the gas tank is still 8 Bar, and the gas is driven by the ball valve to drive the connecting equipment. When the air pressure in the gas tank falls to 5 Bar, the pressure switch is automatically opened by induction, and the compressor starts to work again.