Industry products such as hardware processing, mobile phone casings, automotive parts, mold processing, furniture and lighting fixtures can generate a large amount of oil mist during CNC precision machining, which can be harmful to human health if inhaled. Oil mist can deposit on equipment and ground, easily damaging the machine tool circuit system and causing potential accidents.

The components, characteristics, collection methods, and solutions of CNC machining oil mist purification flue gas are as follows:

1、 Ingredients:

CNC machining oil mist purification flue gas is mainly composed of oil mist and exhaust gas generated during the machining process, which may contain various oily particles, metal particles, acidic or alkaline gases, etc.

2、 Features:

Diversity: The composition of oil mist is complex and may contain oil droplets, particles, and gases of different particle sizes.

Harmfulness: Long term inhalation or exposure to these oil mist and exhaust gases may pose a threat to worker health and also affect the cleanliness of the production environment.

Diffusion: If oil mist and exhaust gas are not collected and treated in a timely manner, they can easily diffuse in the workshop and affect the working environment.

3、 Collection method:

Source control: Customized oil mist collection devices such as side suction, top suction hood, or surround suction hood are used to ensure the maximum capture of oil mist generated in the processing area. This source capture technology can effectively reduce the diffusion range of oil mist.

Efficient collection system: Install efficient oil mist collectors and filters to ensure timely and comprehensive collection of generated oil mist and prevent its diffusion into the workshop air.

4、 Solution

Targeted treatment measures are taken for oil mist and cutting metal chips in CNC workshops. There are two common methods: one-on-one single machine collection scheme and centralized collection scheme

Notes for one-on-one single machine collection:

1. Install an oil mist separation filter on the top of each CNC equipment to ensure that the large particle size of the oil mist exhaust gas is intercepted before entering the purifier. The intercepted waste oil is discharged into the CNC machine for reuse, ensuring the safe operating environment of the oil mist purification equipment. And by regularly cleaning the oil mist separation filter, ensure the continuous and efficient operation of the oil mist treatment system;

2. At the connection between the flexible air duct and the CNC machining center, a special connection flange construction process is designed to ensure that there is no oil leakage or seepage at the connection;

Centralized collection scheme:

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Mechanical filtration: A filter that uses mechanical methods such as a wire mesh defoamer to efficiently separate gas and liquid through the principle of inertia collision, achieving the goal of oil removal. This type of equipment has the characteristics of high oil removal efficiency, simple structure, large porosity, and small pressure drop.

Electrostatic precipitation: The electrostatic oil mist purifier charges the oil mist particles through a high-voltage electric field, and then adsorbs them onto a dust collection plate to achieve the purification of the oil mist. This equipment can efficiently decompose and carbonize oil particles, and generate a large amount of negative ions, further purifying exhaust gas.

Multi stage composite filtration: Some advanced oil mist purification equipment uses static, mechanical and other multi-stage composite oil mist filters, which can efficiently separate and collect small particles in the oil mist, ensuring that the oil mist is thoroughly treated.

The one-to-one single machine collection scheme and centralized treatment for CNC machining oil mist purification each have their unique advantages and disadvantages. The one-to-one single machine collection has high flexibility, strong targeting, and energy saving, but it is costly and maintenance cumbersome; Centralized processing saves space, facilitates management, and is efficient, but requires high initial investment, high energy consumption, and pipeline maintenance; So the one-on-one single machine collection scheme and centralized processing each have their own advantages and disadvantages. The specific selection of which scheme needs to be comprehensively considered according to the actual situation, including factors such as factory space, number of machine tools, frequency of use, investment budget, and maintenance capacity.

In summary, the key treatment method for CNC machining oil mist purification by Suzhou Baigong Environmental Protection Technology Co., Ltd. (BeeGom) lies in selecting appropriate collection methods and efficient treatment equipment, based on actual on-site conditions and costs, to ensure a clean working environment, allowing workers to work in a good environment, and forming a virtuous cycle.