Does the screw air compressor still run oil? Find out why by comparing these items

1. The design of the oil gas separation tank is not standardized: Some screw air compressor manufacturers, when designing the oil gas separation tank, have an unreasonable design of the primary separation system and unsatisfactory primary separation effect, resulting in high oil mist concentration before oil separation, excessive oil content load, and insufficient processing capacity, resulting in high oil consumption.
2. Excessive refueling: The amount of refueling exceeds the normal oil level, and some of the oil is taken away with the airflow, resulting in excessive fuel consumption.
3. Large gas consumption, overload and low pressure use: When users use screw compressors, the exhaust pressure does not reach the rated working pressure of the compressor itself, but it can basically meet the gas consumption requirements of some enterprise users. For example, enterprise users increase gas consumption equipment, resulting in an imbalance between the air compressor exhaust volume and the user's gas consumption. Assuming that the rated exhaust pressure of the air compressor is 8kg/cm2, However, in actual use, the pressure is only 5kg/cm2 or even lower, which means that the screw air compressor has been operating under load for a long time and cannot reach the rated pressure value of the machine, resulting in an increase in fuel consumption. The reason is that under the condition that the exhaust volume remains unchanged, the flow rate of the oil gas mixture increases as it passes through the oil separator, resulting in an excessively high concentration of oil mist, which increases the oil separator load and ultimately leads to high fuel consumption.
4. Blockage of oil return pipeline: When there is foreign matter blocking the oil return pipeline (including the one-way valve and oil return filter screen on the oil return pipeline), the oil condensed at the bottom of the oil separator after separation cannot return to the machine head, and the condensed oil droplets are blown up by the air flow and taken away with the separated air. These foreign matters are usually caused by solid impurities that fall during installation.
5. Damaged oil return one-way valve: If the oil return one-way valve is damaged (from one-way to two-way), the internal pressure in the oil separator after shutdown will cause a large amount of oil to be poured back into the oil separator through the oil return pipe. The next time the machine is running, the oil inside the oil separator will not be able to be sucked back into the machine head in time, causing some of the oil to run out of the air compressor along with the separated air (this situation is common in machines that are not equipped with oil circuit stop valves and head exhaust outlet one-way valves).
6. Improper installation of oil return pipe: During replacement, cleaning, and maintenance of the air compressor, the oil return pipe was not inserted into the bottom of the oil separator (reference: it is better to be 1-2 mm from the arc center of the bottom of the oil separator), resulting in the separated oil not being able to return to the machine head in a timely manner, and the accumulated oil will escape with the compressed air.
7. Failure of the minimum pressure valve: If there is a leakage point at the seal of the minimum pressure valve or the minimum pressure valve is opened in advance (due to the different design opening pressures of various manufacturers, usually ranging from 3.5 to 5.5 kg/cm2), the time for the machine to establish the pressure in the oil and gas tank at the initial stage of operation will increase. At this time, the concentration of gas and oil mist in the low-pressure state is high, the oil flow rate through the screw air compressor is fast, the oil load increases, and the separation effect decreases, This leads to high fuel consumption.

The above content is organized by Superb heater Company, super heater. Mainly professional production: industrial heating elements, temperature measuring elements, production equipment, accessories, and raw materials such as tubular heaters, tubular heaters, belt heaters, ceramic heaters, silicone rubber heaters, thermocouples, etc.

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