Bore diameter measuring apparatus for porous material and measuring method thereof

A technology of porous materials and measurement methods, applied in the direction of measuring devices, instruments, and fluid devices, etc., can solve problems such as complex structures, and achieve the effect of small volume, small structure, and wide measurement range

Inactive Publication Date: 2010-06-09
河南建中医疗器械包装有限公司
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  • Abstract
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Problems solved by technology

The pore size measuring instrument of this patent application can be used for both gas-li

Method used

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  • Bore diameter measuring apparatus for porous material and measuring method thereof
  • Bore diameter measuring apparatus for porous material and measuring method thereof
  • Bore diameter measuring apparatus for porous material and measuring method thereof

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Embodiment Construction

[0031] See figure 1 with figure 2 , the pore size measuring instrument for porous materials of the present invention is a box structure, including a mechanical part and an electronic measurement and control system, and the mechanical part includes a test head 1, a pressure adjustment device 2, a check switch 3, a pressure Measuring device 4 and control panel 5, wherein,

[0032] The test head 1 includes a cylindrical container 11 installed on the upper end of the box body 10, a lower pressure ring 12 arranged on the upper end surface of the cylindrical container 11, an upper pressure ring 13 located above the lower pressure ring 12, and a lower pressure ring 13 fixed on the upper pressure ring 12. The pressing handle 14 on the upper end surface of the ring 13 is connected to the locking handle 15 on the bottom edge of the cylindrical container 11 at one end; the lower pressing ring 12 is a rubber washer. The inner diameters of the upper and lower pressure rings 13 and 12 ar...

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Abstract

The invention discloses a bore diameter measuring apparatus for porous material, which is a box-body structure; the bore diameter measuring apparatus comprises a mechanical part and an electronic measurement and control system, the mechanical part comprises a test head, a pressure regulation device, a detection valve, a pressure measurement device and a control panel arranged on the surface of the box body; a surface tension value of test fluid is only input in the bore diameter measuring apparatus, the maximum bore diameter value of a primary test sample is calculated; the invention further discloses a bore diameter measuring method of porous material; the porous material is completely humidified, test fluid with constant surface tension is used for soaking a sample, so as to lead the pore channel gap of the sample to be saturated and cause the air to pass through the sample pore gap soaked by the tested liquid forcibly, the pressure needed by bubbling a first air bubble from the gap is observed, and then the maximum pore diameter value r of the sample is calculated by a formula.

Description

technical field [0001] The invention relates to a measuring instrument and a measuring method suitable for measuring the maximum pore diameter of porous materials such as filter paper and cardboard, medical masks, surgical suits and the like in industries such as automobiles, medicines and laborers. Background technique [0002] Filter paper and cardboard, medical masks, surgical gowns and medical instrument packaging paper bags used to measure automobiles, medicines, laborers and other industries are all porous materials. Pore ​​diameter is one of the basic parameters to characterize the pore characteristics of porous materials. Known methods for measuring the pore size of porous materials and their products include bubbling method, mercury intrusion method, suspension filtration method, flow rate method and microscope method, and these methods have their own advantages and disadvantages. In the patent application number 91102213.9, a "fluid penetration porosimeter and its...

Claims

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Application Information

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IPC IPC(8): G01B13/10
Inventor 闫宁房明理
Owner 河南建中医疗器械包装有限公司
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