This article is about how to repair the air compressor at high temperatures. Let's talk about the working principle of the air compressor. Then we will talk about the repair of the air compressor at high temperature.
Air compressor working principle:
After the driving machine is started, the crankshaft of the compressor is rotated by the triangular tape, and is converted into a piston to reciprocate in the cylinder through the crank lever mechanism. When the piston moves from the lateral axis of the cover, the cylinder volume increases, the cylinder pressure is lower than the atmospheric pressure, the outside air passes through the filter, and the suction valve enters the cylinder; after reaching the bottom dead center, the piston moves from the shaft side to the cover side. The suction valve is closed, the cylinder volume is gradually reduced, the air in the cylinder is compressed, and the pressure is increased. When the pressure reaches a certain value, the exhaust valve is opened, and the compressed air enters the gas storage tank through the pipeline, so that the compressor is repeated. The ground works continuously to deliver compressed air to the gas tank, so that the pressure inside the tank is gradually increased to obtain the required compressed air.
Repair method of air compressor at high temperature:
First confirm whether the machine temperature measuring component is faulty, you can use another temperature measuring instrument for proofreading. If you confirm that the temperature measuring component has no problem, then check the temperature difference between the oil cooler inlet and outlet, normally between 5 and 8 degrees.
If the temperature is greater than this range, the oil flow is insufficient, the oil circuit is blocked, or the temperature control valve is not fully opened. Please check the oil filter (use the alternative oil filter to consider whether the flow is insufficient). If there is pre-primary filter, please check . For some models, the oil flow adjustment should be adjusted to a larger size. Check whether the temperature control valve is normal. You can remove the valve core, close one end of the temperature control valve, and force the oil to pass through the cooler. If the above method is not solved, It is necessary to consider whether the oil path is blocked by foreign matter.
If the temperature difference is less than the normal range, it proves to be poor heat dissipation. Please check if the water intake is insufficient, whether the inlet water temperature is too high, whether the cooler is scaled (waterway part), whether there is grease in the cooling (oil part), air cooling Check if the radiator is too dirty, if the cooling fan is abnormal, the air volume is insufficient, if the air duct is blocked, if the air duct is too long, the relay fan is not added, the relay fan is not turned on, or the relay fan is faulty. Is there grease in the radiator?
If the temperature difference is within the normal range, the machine is still hot, indicating that the heat generated by the machine head is out of the normal range. It should be checked whether it is overpressured, whether the oil is wrong, whether the oil is aging, whether it is a bearing problem or even an end face friction.
In addition, if there is a fuel cut valve (also called a fuel supply valve or a stop valve), it is necessary to check whether there is a fault. The fault of the oil cut valve will generally jump when the power is turned on, and the temperature will rise linearly.