With the continuous improvement of environmental standards, the emissions of graphite dust and trace harmful gases generated during the processing of graphite carving and milling machines have become a key focus of industrial pollution prevention and control. To achieve green production, graphite carving and milling machines need to optimize equipment structure, innovate processing technology, and build a systematic emission control technology system.
1、 Efficient dust collection technology
The dust generated by graphite carving and milling machine processing has small particle size and is easy to fly. Efficient collection is the primary step in controlling emissions. At present, the mainstream equipment adopts a fully enclosed processing chamber combined with a negative pressure suction system. The fully enclosed cabin isolates the processing area from the outside world, reducing dust spillage; The built-in negative pressure suction device forms an airflow field through a high-power fan, and multiple suction ports are set near the cutting point of the tool to quickly adsorb graphite dust at a wind speed of over 20 meters per second, with a collection efficiency of over 95%. Some devices are also equipped with intelligent sensing systems that automatically adjust suction based on dust concentration, reducing energy consumption while ensuring collection efficiency.
2、 Multi stage purification treatment process
The collected dusty gas needs to undergo multi-stage purification treatment to meet emission standards. The primary filtration adopts a pleated polyester fiber filter element, which can intercept more than 90% of large particle dust; Intermediate filtration utilizes electrostatic precipitator technology to charge and adsorb tiny dust particles onto the electrode plate through a high-voltage electric field, achieving a removal rate of over 99% for dust particles ranging from 0.1 to 10 microns; Install an activated carbon adsorption device at the end to deeply purify potential organic volatiles and odors. In addition, some enterprises have introduced wet dust removal technology, which utilizes the coagulation effect of water mist and dust to achieve purification. This not only avoids secondary dust flying, but also reduces equipment operating temperature and reduces fire hazards.
3、 Waste recycling technology
The processed graphite dust is not waste, but a resource with high recycling value. Advanced processing technology converts recycled graphite dust into high-value products such as battery negative electrode materials and lubricant additives through processes such as grinding, grading, and purification. For example, by using airflow pulverization technology to refine dust to the nanometer level, and then removing impurities through chemical purification, high-purity graphite powder with a purity of 99.9% can be prepared and reused in fields such as new energy and electronics, achieving a closed-loop management of "pollution treatment regeneration".
4、 Energy consumption optimization and low-carbon design
Emission control not only targets pollutants, but also requires reducing energy consumption and emissions during equipment operation. The new graphite carving and milling machine optimizes the motor drive system, replaces traditional asynchronous motors with servo motors, and uses intelligent frequency conversion technology to reduce equipment energy consumption by more than 30%. In the design of the cooling system, water circulation cooling is used instead of air cooling to reduce the power consumption generated by fan operation and lower equipment operating noise. In addition, the application of lightweight body design and energy-saving lighting system further reduces the carbon emissions of the entire machine.
The emission control technology of graphite carving and milling machines from an environmental perspective achieves the dual goals of pollutant reduction and efficient resource utilization through the collaborative application of dust collection, purification treatment, resource recovery, and energy consumption optimization, providing technical support for industrial green transformation.