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CNC cutting machine will appear a lot of dust in the process of cutting metal, this will cause the factory's environmental pollution, how to reduce the dust generated by CNC cutting machine? We need to do a good job of ventilation in the factory. Here we analyze two types of ventilation:
1. The wind screen sets the soot fan. The wind screen sets the soot fan to use its unique structure, resulting in a reasonable flow field, that is, a short-circuit flow field, effectively controlling and capturing the welding fumes, and increasing the effective suction range of the smoking dust, eliminating the traditional use. Solid suction hood.
The pressure-injection type local ventilation device is mainly composed of an ejector, a tape duct, and a magnetic fixed bearing. As an effective device for purifying soot in sealed containers, compared to soot dust collectors, the advantages of pressure-injection type local ventilation devices are reflected in the following aspects:
(1) Safe and reliable.
(2) Small size, light weight, and easy to carry.
(3) The effective range of welding fume diffusion control is large, and it is not necessary to move the vents frequently.
(4) Dust-laden air is discharged outside the closed container and further processed by the ventilation facilities of the workshop. But there are also some deficiencies that can generate noise and require a source of compressed air.
2. Pressure-injection local ventilation device The suction-suction ventilation device is a ventilation device that can effectively control the diffusion of pollution sources. The simple use of a suction hood on the shed welding to eliminate large-scale welding fumes has the problems of unsatisfactory results and unreasonable methods, and thus proposes the use of a blowing-suction ventilation device for the control of soot welding dust.
This technology has developed a mathematical model of "short-circuit flow field" theoretically through the development of various types of prototypes, multiple smoke and dust tests, and a large number of tests. The actual soot and dust test has verified its good dust collection effect. Both measured and theoretical calculations show that the use of a short flow field to control the diffusion of smoke and dust is effective, and the suction stroke at the suction port is 2 to 3 times more efficient than the traditional method, and the dust collection rate is above 95%.
Welding in sealed containers, NC flame cutting electrical welding fumes continue to gather, the concentration continues to rise, sometimes up to 800mg/m3, seriously endanger the physical health of electric welders. Local ventilation of the sealed container welding operation is a necessary measure to improve the working environment. Closed containers generally have only 1 or 2 orifices, and the orifice area is small. Some sealed containers have a complex internal structure and a small space. At the same time, in order to control the welding fumes, ventilation facilities are required to be installed near the welding points and they can be moved at any time. This requires that the local ventilation facilities not only have a good ventilation effect, but also be lightweight and simple.
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Editor: zgqgjjyw
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