Oil-gas lubrication method

Abstract

The invention discloses an oil-gas lubrication method. The method comprises the steps that first, a PLC control system controls an entire oil-gas lubrication process and is sequentially connected with an oil pump, an electromagnetic valve, a distributor, an oil and gas mixer, a lubrication part and an oil return box; second, an oil box is connected with the oil pump; third, an air compressor is connected with the oil and gas mixer through a filter. The oil-gas lubrication method has the advantages that oil consumption (1/8-1/10 of that of oil-mist lubrication) is low, the adaptability (150-680 cst/40 DEG C) to lubricating oil viscosity is wide, oil mist conveying capacity (conveying air pressure is 2-10 bar, and air flow speed is 30-80 m/s) is high, conveying distance (capable of achieving 100m) is long, the sealing effect on a bearing is good (the positive pressure in the bearing is 0.3-0.8 bar), the service life of the bearing is long (the service life is prolonged by 2-4 times), emission of oil mist is avoided, and the environment is not polluted, thereby having high popularization value.

Description

technical field [0001] The invention belongs to the field of steel rolling machinery and relates to an oil-air lubrication method for steel rolling machinery, and is especially suitable for lubricating the bearings of cold rolling equipment. Background technique [0002] With the rapid development of science and technology, in order to increase productivity and reduce costs in the cold rolling industry, the requirements for increasing the speed of the rolling mill are getting higher and higher. Therefore, lubrication technology is an effective means to effectively solve equipment wear, prolong the trouble-free running time of equipment, and greatly reduce the consumption of spare parts for cold rolling equipment. The bearing lubrication of the original technology cold rolling equipment should be lubricated by oil mist, but there are obvious deficiencies in oil mist lubrication: [0003] 1. The oil consumption is high (8 to 10 times that of oil-air lubrication), the lubricat...

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Problems solved by technology

[0003] 1. The oil consumption is high (8 to 10 times that of oil-air lubrication), the lubricating oil cannot be recovered, and quantitative oil supply cannot be realized;

[0004] 2. Low adaptability to lubricating oil viscosity, only suitable for low viscosity (150cst / 40℃) lubricating oil, when the viscosity of the oil is too high, it needs to be heated;

[0005] 3. Low oil mist delivery capacity and short delivery distance (≤20m);

[0006] 4. The overpressure formed in the bearing seat is small (≤0.02bar), and the sealing effect on the bearing is poor;

[0007] 5. When working, 30-50% of the oil mist will be discharged into the air, polluting the environment and harmful to health

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