Archimedes spiral filtering device

Abstract

The invention discloses an Archimedes spiral filtering device. The Archimedes spiral filtering device comprises a housing, a first filtering module and a second filtering module. When the Archimedes spiral filtering device works, air carrying both of oil mist and impurities enters the filtering device from the middle of the first filtering module and advances in an extending direction of first mesh plates adopting a positive Archimedes screw design. In the process, heavy gases carrying both of the oil mist and the impurities move forwards along with the airflow and are in contact with the surfaces of the first mesh plates, the oil mist and the impurities can be adsorbed onto the surfaces of the first mesh plates and are continuously gathered to form liquid oil, and the liquid oil flows back into an oil collection tank under the action of gravity. The rest gases conveniently enter the second filtering module along a positive Archimedes screw arc of the first mesh plates. After entry into the second filtering module, air advances in an extending direction of second mesh plates adopting a negative Archimedes screw design and is discharged out of an exhaust opening. In the whole process, the filtering efficiency is high, the oil mist and impurity removal effect is excellent, and the content of oil mist and the impurities in filtered air is remarkably reduced.

Description

technical field [0001] The invention relates to the technical field of air filtering equipment, in particular to an Archimedes spiral filtering device used on an oil mist collector. Background technique [0002] At present, in the process of CNC machine tools processing workpieces, a large amount of heat will be generated when the tool and the workpiece rotate at high speed. At this time, it is necessary to use coolant to cool the tool and the processing parts. When the coolant is heated, a large amount of oil mist will be generated. , these oil mist diffuse in the air will cause air pollution, workers inhalation will cause harm to the body, in addition, these oil mist attached to the equipment for a long time will cause corrosion to the equipment, thereby damaging the components of the equipment and shortening the service life of the equipment For this reason, it is necessary to design a special oil mist collector to collect and separate the oil mist. [0003] The existing...

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Problems solved by technology

[0002] At present, in the process of CNC machine tools processing workpieces, a large amount of heat will be generated when the tool and the workpiece rotate at high speed. At this time, it is necessary to use coolant to cool the tool and the processing parts. When the coolant is heated, a large amount of oil mist will be generated. , these oil mist diffuse in the air will cause air pollution, workers inhalation will cause harm to the body, in addition, these oil mist attached to the equipment for a long time will cause corrosion to the equipment, thereby damaging the components of the equipment and shortening the service life of the equipment , it is necessary to design a special oil mist collector to collect and separate the oil mist

[0003] The existing centrifugal oil mist separator uses the high-speed rotating impeller to generate negative pressure, sucks gas from the outside, makes the gas move radially along the blades of the impeller and generates acceleration, thereby generating high-speed centrifugal force; the sucked gas or oil Due to the effect of centrifugal force, the oil mist particles are separated by centrifugal force along the radial direction of the impeller blades to the mesh space (mesh partition) surrounding the impeller, so as to achieve the effect of oil mist gas-liquid separation, but at the same time, with the action of centrifugal force , the airflow is directly resisted by the mesh partition and the separator on the inner wall in the direction of movement, so that the airflow is hindered, thereby reducing the airflow flow rate, directly reducing the separation effect, and the effect of oil mist or gas-liquid separation cannot be achieved. status

After a long time of use, a large amount of oil will accumulate on the screen and block, the oil mist filtration efficiency will be greatly reduced, and the operating load of the fan will increase, resulting in excessive noise, and it will be difficult to clean and maintain later.

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