Multi-stage oil and gas separator

Abstract

The invention discloses a high-efficiency maintenance-free multi-stage oil and gas separator. The oil and gas separator is characterized in that a first cyclone separation cavity consists of an independent shell or the inner wall of a separation hole in an engine cylinder cover and an oil and gas separator body shell; a second dispersing separation cavity consists of the oil and gas separator body shell and the outer walls of three refine separation conical pipes which are distributed on the circumference at 90 degrees; a third refine cyclone separation cavity consists of the three refine separation conical pipes which are distributed on the circumference at 90 degrees and a central pipe; a fourth reinforcement cyclone separation cavity consists of the refine separation conical pipes which are distributed on the circumference at 90 degrees, a central pipe and a cyclone blade; a fifth refine cyclone separation cavity consists of a small refine separation conical pipe arranged in the center of the circumference; and a sixth compact and dispersing separation cavity consists of a safety valve cavity and a safety valve so as to form multi-stage high-efficiency separation. By the high-efficiency maintenance-free multi-stage oil and gas separator, the oil and gas separation efficiency reaches 80 percent, the air inlet resistance is less than 1Kpa, a good separation effect is completely achieved, and the oil and gas separator can be used without being maintained for ever.

Description

technical field [0001] The invention relates to a crankcase oil-gas separation system of an automobile engine, in particular to an efficient maintenance-free multi-stage oil-gas separator for crankcase oil and gas of an automobile diesel engine. Background technique [0002] When the automobile engine is working, because there is always a certain gap between the piston ring and the cylinder liner of the engine, and the gap will continue to grow with the wear of the piston ring, there will always be a part of the combustible mixture and the exhaust gas after combustion. Intruded into the crankcase of the engine, causing the pressure in the crankcase to increase, the oil leaks from the crankshaft oil seal, crankcase gasket, oil pan gasket, etc.; the burned exhaust gas that escapes into the crankcase, due to The temperature is high, and it is continuously mixed with the engine oil during the operation of the engine, resulting in high-temperature carbonization, thinning, and det...

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Problems solved by technology

[0006] Filter element type: This method is to install an oil-gas separation filter element in the separation chamber, which is made of a superfine synthetic fiber; this method has a high initial efficiency of more than 95% due to the use of the filter element; but due to the ultrafine The micropores of the synthetic fiber filter element are extremely small, and the oil and carbonized particles in the oil-air mixture are easily attached to the surface of the filter element and deposited inside the filter element, resulting in blockage of the filter element, a sharp drop in separation efficiency, an increase in resistance, and an increase in crankcase pressure; especially In winter, the water vapor in the oil-air mixture adheres to the surface of the filter element and settles inside the filter element. After the engine stops working, it will freeze and block the filter element to fail. It has been proved by actual use that the filter element will seriously fail when the engine works less than 3000KM, which is safe. Extremely poor, high post-maintenance costs, users complain a lot

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