Device for recovering, separating and purifying oil mist in minimum quantity lubricant grinding process

A device for recovering, separating and purifying oil mist in a minimum quantity lubricant (MQL) grinding process, comprising:

• an air and oil mist separating mechanism, which is used for separating oil mist and particles in air and comprising a pipeline having an inlet end and an outlet end and a fan fixedly connected to the outlet end of the pipeline, and being used for creating a negative pressure in the pipeline, at least one conical filter mesh mechanism, which comprises a conical filter mesh, arranged in the pipeline with a tip of the conical filter mesh mechanism facing toward the inlet end of the pipeline, and the conical filter mesh mechanism being used for separating the oil mist and the particles in the air;
• a filtering and recovering mechanism, which is connected and in communication with the pipeline by a connecting part, and located under the conical filter mesh mechanism for filtering and recovering the oil mist separated by the air separating mechanism, and comprising a tank body, a filtering mechanism comprising an electromagnetic plate arranged in the connecting part, and an oil box arranged within the tank body with a filter paper arranged thereabove, and a recovering mechanism connected to the filtering mechanism and wherein the recovering mechanism comprises an oil cup fixed outside the tank body;
• wherein the connecting part that connects the tank body to the pipeline comprises two connecting pipe assemblies that are respectively arranged upstream and downstream of the at least one conical filter mesh mechanism arranged in the pipeline.