Leak detection method of high efficiency filter
Release time:
2021-12-21
Generally speaking, common instruments used for high efficiency filters include aerosol generators and dust particle counters, among which dust particle counters are generally used to detect unit volume, dust in the air, the size and number of particles in a clean environment. This instrument has a relatively small volume, high detection accuracy, and relatively simple functions. It is very convenient to store and print the results after measurement for detecting a clean environment. The aerosol generator is able to produce consistent aerosol particles of a variety of diameters, and in conjunction with the use of the process can provide more examples to measurehigh efficiency filterNext, the editor will talk to you about the method of high-efficiency filter leak detection.
The leak detection methods of the high-efficiency filter are respectively wrong, such as sodium flame method, fluorescence method, particle counting method, etc. Among them, the special method is a characteristic filter. The difference in turbidity between the front and back samples is used to judge the filtering effect of the high-efficiency filter on oil mist particles in the air. However, this method is very easy to cause damage to the high-efficiency filter in the process of detecting the high-efficiency filter and cannot directly read the corresponding numerical value, therefore, it is a waste of time. At present, few places use this method to detect the value of the high efficiency filter.
Fluorescence method can detect the generation of high efficiency filter. This test method is to sample before filtering, then use water to dissolve the sodium fluorescein contained on the sampling filter paper, and then judge its intensity under specific conditions, thus reflecting the weight of this dust. The filtration efficiency is calculated by comparing before and after. The particle counting method is used more frequently and widely. Through this method, the particle size of dust can be penetrated, through continuous scanninghigh efficiency filter, the filter effect on the particle diameter.
In addition, water can also be used to detect the quality of the high-efficiency filter. Before filtering, the high-efficiency filter can be placed on the ground or on the table, and some water can be sprinkled on the filter paper. If the filter paper seeps into the water within 5 minutes, it is the quality of the air filter made of cotton pulp paper is not good. Add 2-5 hours of water seepage filter paper, which is made of wood pulp paper, but will reduce the air compressor gas production efficiency, resulting in more power consumption of the air compressor. If the filter paper seeps in for 12-15 hours, it is a better filter paper. At present, many manufacturers use air filters of this type of filter paper as original consumables. If the filter paper does not infiltrate water for 24 hours, it means that this is a high-efficiency filter.
If you want to extendhigh efficiency filterIn fact, you can block the dust before the pre-filter. In this way, the service life of the high-efficiency filter can be extended by about 5 years. Today, the leak detection method of the high-efficiency filter is introduced here. Help.
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