Piston Air Compressor to the working principle can be divided into two types of speed and volumetric.
The working principle of the speed air compressor is that the gas is subjected to a large kinetic energy under the action of a high-speed rotating impeller, and then a sharp deceleration in the diffuser is carried out to convert the kinetic energy of the gas into potential energy to improve the gas pressure. Air compressor works is: by direct compression of the gas, so that the gas volume to reduce the gas pressure to achieve the purpose. Volumetric type according to the characteristics of the cylinder piston is divided into two types of rotary and reciprocating.
Piston air compressor working principle
When the piston is reciprocated in the cylinder, the pressure in the left cavity of the piston in the cylinder is lower than the atmospheric pressure. The suction valve is opened and the outside air is in the cylinder. This process is called the compression process. When the cylinder pressure is higher than the output air pipe pressure, the exhaust valve opens. Compressed air sent to the gas pipe, the process known as the exhaust process. The reciprocating motion of the piston is formed by a motor-driven crank slider mechanism. The rotary motion of the crank is converted to the reciprocating motion of the sliding-piston.
The air compressor is used to compress and transport the gas. Pneumatic control and pneumatic control in the economic activities of the increasingly widespread. Making air compressors an indispensable device for many departments Air compressors will inevitably fail during operation. And routine maintenance is to solve the problem in the initial stage, so as not to cause a large mechanical accident at this stage of the general use of air compressors are screw-type air compressor and piston-type air compressor. Screw air compressor to run smooth, low noise And other characteristics of the rapid rise. Piston machine is a new type of piston machine relative to the piston air compressor low price, good repair, selectivity, and is still widely used. Thus the unique maintenance and troubleshooting of the piston book becomes a common problem.
Principle of Air Compressor and Common Phenomenon
Piston air compressors are generally driven by electric motors. So that the crankshaft of the air compressor rotation, and then through the connecting rod to drive the piston in the cylinder to do reciprocating linear motion. The cylinder of the volume of the cyclical changes in the piston and cylinder head on the intake and exhaust read and write match. Constantly inhaled, compressed and exhale the air. To achieve the purpose of generating compressed air compressed air tube tube into the cone tank for use
Common Fault Analysis
Diagnosis failure should be from Jane to Bin, from easy to difficult, by the table and the principle of doing, ask, listen, see, touch, test and demolition work, you can correctly and quickly diagnose the cause of the fault , To be excluded,
1, air compressor machine class failure
(1) with the bolt bolt pull off the reasons: the assembly when the nut was twisted too Xi, connecting rod bolts due to bear the excessive preload and was broken, or tight when the tilt,Piston Air Compressor connecting rod bolts due to uneven Contains a brief and pulled off section or connecting rod bearing overheating, piston jammed or ultra-lean operation. The bolts were pulled off by excessive stress.
(2) the piston stuck or blown to death, the cause: the oil has deteriorated or run bad, so that the piston in the cylinder of the library increased and stuck. Or cold water supply is not uniform, when for a long time, causing a sharp contraction of the cylinder, so that the piston stuck.
(3) bearing heat, cause: the journal and the bearing with the uneven or small contact area per unit area of the pressure section or bearing tilt or crankshaft bending: poor lubrication or oil deterioration.
(4) Cylinder and cylinder head heating causes: cooling water supply shortage section cooling water pipe blockage. Make water supply interrupted. The wind direction is not correct or gas reading work is not normal,Piston Air Compressor resulting in the load reassignment of the cylinder. The cylinder of the cylinder and the cylinder head is increased
(5) the percussion of the cylinder. Cause: Piston or Piston Ring Wear Seal Piston or Piston Ring Clutch Piston or Cylinder Liner Wear Joints Parquet Linkage and Cylinder Centerline No savings Drying volume is too small
(6) suction, exhaust read the business! D sound causes: gas read positioning screw stare is not in place. The valve is subjected to the impact of the airflow The upper and lower jumps are the same as the piston.
(7) the pressure gauge shows the pressure value is very low. Or drop after the air pressure drop more drink, may be exhaust gas can be used to apply soapy water or hear the sound of the check pipe, pipe joints and gas l cover. Vent surface
(8) sudden impact. Cause: Cylinders gather water, produce. Water hammer clamshell break or get gas to read well tighten nuts loose
(9) abnormal picking sound causes: connecting rod bulk relaxation,Piston Air Compressor or rod head relaxation, or bearing between the air too large. Or journal wear round.
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