It is difficult to completely prevent dust from being charged. However, in order to better prevent dust from generating static electricity during transportation, the following methods can be used:
Use anti-static hose
Anti-static hose is a hose produced by mixing polyurethane raw materials with static conductive agents. The pipe wall has the characteristics of conducting static electricity. This anti-static wear-resistant conveying hose has similar characteristics to stainless steel hoses. The pipe wall can conduct static electricity, thereby neutralizing the static electricity ions generated by friction during the material transportation process in the hose. This prevents material blockage and static electricity accidents caused by static electricity.
Enhance the attenuation of static electricity charge
After the dust is finally transported to the storage facility through the pipeline, the material speed is zero. At this time, the charge is in the dissipation process. Based on the characteristics of reduced flow rate and enhanced electrostatic dissipation process, in order to effectively reduce the danger of static electricity discharge during the dissipation process, buffers are often installed in the pipeline. This can greatly eliminate the static electricity accumulated when the material flows in the pipeline.
Adjust the size of dust particles
For dust, the smaller the dust particles, the larger the total area of the particles, and the more oxidation reactions they can undergo in the air. According to research, when the particle size is less than 300 microns, spark discharge can cause dust in production to catch fire. Therefore, replacing dust with granular materials (particles larger than 300 microns) is a measure to prevent static electricity hazards. It must be pointed out that the particle size is determined by the requirements of the process and cannot be changed at will.