Differential pressure adjusting device of residual mist recovery system and oil mist lubrication system

Abstract

The invention discloses a differential pressure adjusting device of a residual mist recovery system and an oil mist lubrication system comprising the same. The differential pressure adjusting device comprises a separation tank communicating with an exhaust pipe and a differential pressure adjusting loop. A motor is mounted on the separation tank. A shaft of the motor is connected with a separationsieve. One end of the differential pressure adjusting loop communicates with the separation tank, and the other end of the differential pressure adjusting loop communicates with a residual mist recovery host machine. The differential pressure adjusting device is mounted in the oil mist lubrication system. Generated negative pressure is quite low without the adverse influence on lubrication on anupstream pump. The negative pressure can be adjusted and controlled minus 0.5-0 inch of water (0.00125-0 bar). Micro-positive pressure is still maintained in a recovery pipe and a bearing box. Power consumption is low. The oil-gas separation effect is good. There is no need to clean the separation sieve of the motor on the separation tank. The maintenance workload is greatly reduced.

Description

technical field [0001] The invention relates to a differential pressure adjusting device and an oil mist lubrication system, in particular to a differential pressure adjusting device and an oil mist lubrication system of a residual mist recovery system. Background technique [0002] In the current industrial production, it is often necessary to separate the gas-liquid mixture discharged into the atmosphere and classify it, so as to reduce the pollution to the environment. The oil mist lubrication system uses the instrument wind to atomize the lubricating oil into oil mist (aerosol formed by mixing fine oil droplets and instrument wind), and uses the oil mist to lubricate the bearings in the pump bearing box, and the remaining oil mist will It is discharged into a specific collection box through the oil discharge port at the bottom of the pump, and then discharged into the atmosphere through the vent pipe on the collection box. Each oil mist lubrication system includes one oi...

AI Technical Summary

Problems solved by technology

[0003] The problems in the existing technology include: 1. The negative pressure is too high, which affects the lubrication of the upstream machine pump. According to the user’s feedback, the negative pressure is too high, which increases the amount of oil mist required for the lubrication of the upstream machine pump by nearly 50%. The recovery line of each pump is equipped with a flow regulating valve, but it is still unavoidable that part of the oil mist exceeding the normal discharge volume is drawn from the bearing housing

Negative pressure is always maintained in the entire recovery pipeline, sometimes even destroying the micro-positive pressure in the bearing box, which is not allowed

[0004] 2. The instrument wind consumes a lot

Although the cost of instrument air in each factory is slightly different, the cost of instrument air consumed every year also needs hundreds of thousands of yuan

[0005] 3. The oil and gas separation effect is not good

So the separation effect is not ideal

[0006] 4. The filter element needs to be replaced regularly, which increases maintenance costs

Images