The common faults of screw air compressor are those

Shanghai granklin group is engaged in the production and processing of oil-free and water-lubricated air compressors. we are focused on the production of screw air compressors. doing a good job in water-lubricated air compressors can make mechanical failures lower and users feel more at ease in using gas.

On the use of the effect to see the screw air compressor has the following advantages.

1. High reliability. Screw air compressor parts less, no wearing parts, so it is reliable operation, long life, overhaul interval of up to 4-80000 hours.

2. Convenient operation and maintenance. The screw air compressor has a high degree of automation, and the operator does not have to go through a long period of professional training, and can realize unattended operation.

3, the power balance is good. The screw air compressor has no unbalanced inertial force, the machine can work smoothly and at high speed, and can realize no-foundation operation. It is especially suitable for mobile compressors with small size, light weight and less floor space.

4, strong adaptability. The screw air compressor has the characteristics of forced gas transmission, the volume flow is almost not affected by the exhaust pressure, and can maintain high efficiency in a wide range. It is suitable for a variety of conditions without any change in the compressor structure.

Other common faults of screw air compressor:

1, the unit fuel consumption or compressed air oil content is large;

2. Low pressure of unit;

3. Fan motor overload;

4. Large unit current;

5. The unit exhaust dao temperature is high (over 100°C);

6. The exhaust pressure of the unit is too high;

7. The unit cannot be started;

8. The current is large or tripped when the unit starts.

Repair

1. Setting of pressure regulator of air compressor

the unloading pressure is adjusted by the upper adjusting bolt. Rotate the bolt clockwise to increase the unloading pressure and counterclockwise to decrease the unloading pressure.

2. Air filter

the dust in the inhaled air is blocked in the filter to avoid the compressor being prematurely worn and the oil separator being blocked. Usually after 1000 hours or one year of operation, the filter element should be replaced. In the dusty area, the replacement time interval should be shortened. When the filter is repaired, it must be shut down to reduce the parking time. It is recommended to replace it with a new or cleaned spare filter element.

3. Cooler

the inner and outer surfaces of the cooler pipes should pay special attention to keeping them clean, otherwise the cooling effect will be reduced. The working conditions should be cleaned regularly.

4. Gas storage tank and oil-gas separator

gas storage tank and oil-gas separator shall be manufactured and accepted according to pressure vessel standards and shall not be modified arbitrarily.

5. Safety valve

the safety valve installed on the gas storage tank and the oil and gas separator shall be checked at least once a year. The professional person shall be responsible for adjusting the safety valve. The lever shall be loosened at least once every three months to open and close the valve once to ensure that the safety valve can work normally.

6. Digital thermometer experiment

the inspection method of digital thermometer is to put the thermocouple and a reliable thermometer into the oil bath. If the temperature deviation is greater than or equal to 5%, the thermometer should be replaced.

7. Motor overload relay

under normal circumstances, the relay contact should be closed, when the current exceeds the rated value, open, cut off the motor power supply.

Basic structure information of screw air compressor:

the basic structure of the screw air compressor: in the body of the compressor, a pair of spiral rotors meshing with each other are arranged in parallel. Usually, the rotor with convex teeth outside the pitch circle is called male rotor or male screw.

The rotor with concave teeth in the pitch circle is called the female rotor or the female screw. Generally, the male rotor is connected with the prime mover. The male rotor drives the female rotor to rotate the last pair of bearings on the rotor to achieve axial positioning and bear the compressor. Axial force. The cylindrical roller bearings at both ends of the rotor enable the rotor to achieve radial positioning and withstand the radial forces in the compressor.

At both ends of the compressor body, orifices of a certain shape and size are respectively opened. One is for suction, called the intake port; the other is for exhaust, called the exhaust port.