Filter material filtering efficiency and airflow resistance tester
A technology of filtration efficiency and airflow resistance, which is applied in the direction of measuring devices, scientific instruments, permeability/surface area analysis, etc., can solve the problems of low sampling efficiency, improve the convenience of use, ensure the test effect, and ensure the smoothness of the test.
Pending Publication Date: 2021-12-03
安徽省产品质量监督检验研究院
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Problems solved by technology
At present, the filter efficiency test equipment using a single dust particle counter is used in the market, and the upper and lower chambers are cyclically sampled during operation, and the sampling efficiency is low during continuous test sampling.
Method used
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[0025] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.
[0026] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "another end" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, use a specific Azimuth configuration and operation, therefore, should not be construed as limiting the invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and should not be understood ...
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The invention discloses a filter material filtering efficiency and airflow resistance tester which comprises a test board, a tester is installed at the upper end of the test board, an upper test bowl is installed on the front portion of the lower end of the tester, a lower test bowl is arranged below the upper test bowl, the lower test bowl is installed on the test board, a first outer ring, a first inner ring and a rotating sleeve are installed at the upper end of the testing table, the first outer ring is arranged on one side of the lower testing bowl, the first outer ring, the first inner ring and the rotating sleeve are sequentially arranged from outside to inside, a bearing is installed in an inner cavity of the rotating sleeve, a rotating column is installed on an inner ring of the bearing, a first synchronous wheel is installed at the upper end of the rotating column, and a transmission frame is installed at the upper end of the first synchronous wheel. According to the filter material filtering efficiency and airflow resistance tester, continuous testing of four filter materials can be achieved, the testing efficiency is improved, the filter materials can be tensioned, the testing flatness of the filter materials is guaranteed, and the testing effect is guaranteed.
Description
technical field [0001] The invention relates to the technical field of filter particle filtration efficiency detection, in particular to a filter material filtration efficiency and airflow resistance measuring instrument. Background technique [0002] A mask is a kind of hygiene product, which is generally worn on the mouth and nose to filter the air entering the mouth and nose, so as to block harmful gases, odors, droplets, viruses and other substances, and is made of gauze or paper. The mask has a certain filtering effect on the air entering the lungs. When respiratory infectious diseases are prevalent, when working in a polluted environment such as dust, wearing a mask has a very good protective effect. The dust suppression efficiency of the mask is based on its blocking efficiency for fine dust, especially for respirable dust below 2.5 microns. Because dust of this particle size can directly enter the alveoli, it will have the greatest impact on human health. The dust ...
Claims
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Login to View More IPC IPC(8): G01N15/08
CPCG01N15/08
Inventor 丁振华成清陈静汪华王红沈妍陈蕾纪扬扬
Owner 安徽省产品质量监督检验研究院