Method and device for reducing oil mist leakage of airtight machining chamber

Abstract

The invention discloses a method and device for reducing oil mist leakage of an airtight machining chamber. After a tool inside the airtight machining chamber of a numerical control machine tool or aCNC machining center stops rotating, and before a part taking door is opened, a device with changeable volume is taken for use, the device with changeable volume is enlarged in volume to generate negative pressure inside so as to suck oil mist from the inside of the airtight machining chamber and stores the oil mist inside temporarily, and then less oil mist leaks out of the airtight machining chamber while the part taking door is open; and after a machined part in the airtight machining chamber is taken away, a worker places a raw material to be machined well, and the part taking door is closed, the device with the changeable volume discharges the oil mist stored inside out, the oil mist flows back into the airtight machining chamber, then the whole cycle of oil mist suction and backflowis completed, and it is implemented that the oil mist is transferred while the part taking door of the machining chamber is open. The device for reducing oil mist leakage of the airtight machining chamber is composed of an oil mist collection port, an oil mist collection pipe, an oil mist buffer, an oil mist backflow pipe and an oil mist backflow port. According to the method and device for reducing oil mist leakage of the airtight machining chamber, because the oil mist is temporarily transferred but not purified locally, and oil mist leakage while the part taking door of the machining chamber is open is reduced with relatively low cost.

Description

technical field [0001] The invention belongs to the field of oil mist pollution control, and in particular relates to a method and a device for reducing oil mist leakage in a processing room of a closed machine. Background technique [0002] Metal cutting fluid plays the role of lubrication, cooling and cleaning in the process of metal processing such as machine tool turning, milling, cutting and grinding. For the wet machining process using cutting fluid, the cutting fluid undergoes a series of high-speed cutting collisions and frictions to form a large number of oil mist particles. Although a fully enclosed airtight processing chamber can effectively reduce the splashing of cutting fluid and oil mist leakage, there is still oil mist escaping when the pick-up door is opened. When workers change workpieces, they are directly exposed to the oil mist, which can lead to asthma, lung disease and other respiratory diseases, visual impairment, rhinitis, allergic skin diseases, ma...

AI Technical Summary

Problems solved by technology

However, if the oil mist is discharged directly to the outside, it will pollute the environment; if the recovery machine is used for purification, it needs to be cleaned or replaced frequently.

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