Particle size detecting device and method

A detection device and particle technology, applied in the field of testing, can solve the problems of complex structure, inconvenient operation and high use cost of the particle size detection device, and achieve the effects of simple and reasonable structure, convenient portability and low manufacturing cost

Inactive Publication Date: 2016-08-24
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the technical problems of complex structure, inconvenient operation and high cost of use of particle size detection devices in the prior art, the present invention provides a low-cost, integrated, portable, and on-line detection particle size detection device

Method used

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  • Particle size detecting device and method
  • Particle size detecting device and method

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Embodiment 1

[0023] Such as figure 1 as shown, figure 1 The thin solid lines with arrows in the middle indicate the optical path, and the dashed lines indicate the electrical connections. A particle size detection device includes a light source 1 , a modulation unit 2 , a sample pool 3 , a spectroscopic prism 4 , a screening conversion unit 5 and a calculation unit 6 . The light source 1 is a He-Ne laser, which produces a laser beam with an emission wavelength of 632.8nm and an output power of 2.4mW. The modulation unit 2 includes a polarizer and a beam expander collimator, and the polarizer is a linear polarizer. After the laser beam passes through the polarizer, the stray light is filtered out, and the light intensity is attenuated, and the energy attenuation is 1mW. The beam expander collimator is a quadruple beam expander. The laser beam passes through a beam expander collimator, and the beam diameter is about 8mm. The sample pool 3 contains a solution of particles to be tested, a...

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Abstract

The invention provides a particle size detecting device and method and relates to the technical field of tests. The device comprises a light source, a modulation unit, a sample cell, a light splitting prism, screening and converting units and a calculation unit, wherein the screening and converting units screen out scattered light components parallel with and perpendicular to a scattering surface and convert the scattered light components into light energy data, inversion calculation is performed, and particle size distribution information is solved. The particle size detecting device solves technical problems that particle size detecting devices in the prior art are complex in structure, inconvenient to operate and high in use cost. The particle size detecting device and method have the beneficial effects as follows: particle size inversion is performed according to the ratio of the two scattered light components, thus effects of air and scattered particles in a light path are effectively reduced, and the particle size measurement reliability is improved; the device is simple and reasonable in structure, low in manufacturing cost, simple to operate, convenient to carry and suitable for online detection.

Description

technical field [0001] The invention relates to the technical field of testing, in particular to a particle size measuring device and method. Background technique [0002] In industrial production, particle size is closely related to product quality, and the detection of particle size is directly related to the final product quality. At present, particle size measurement methods based on Mie scattering theory at home and abroad are relatively mature, and static light scattering measurement method is one of them, and a laser particle size analyzer is also made to facilitate online detection. The basic principle is that when the laser is incident on the particle to be measured, the particle will scatter the incident laser light, and the spatial distribution of the scattered light energy is related to the size of the particle. Measure the spatial distribution of the scattered light energy, and then apply the light scattering theory and inversion algorithm The particle size dis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/02
CPCG01N15/0211
Inventor 孔明沈海栋赵军郭天太王道档刘维单良杨瑶叶婷贾茜媛沈永
Owner CHINA JILIANG UNIV
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