Sample pool for testing graininess of granule

A technology for testing samples and sample pools, applied in particle size analysis, particle and sedimentation analysis, measuring devices, etc., to achieve the effects of online particle size testing, large pipe cross-sections, and improved analysis accuracy

Inactive Publication Date: 2009-05-20
任中京
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, when the laser particle size analyzer is used to test powder materials, the sample cell cross-section is usually narrow and strip-shaped, and the aspect ratio is above 3. The sample is in the shape of a sheet in the sample cell, and the beam is incident vertically from the large working surface. It is suitable for the measurement of forward scattering, so the measurement range is above 0.3 microns

Method used

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  • Sample pool for testing graininess of granule
  • Sample pool for testing graininess of granule
  • Sample pool for testing graininess of granule

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] as attached figure 1 Shown, the particle size test sample cell of the present invention, its structure comprises the sample cell body C that the side wall of making with optical glass is transparent, and wall thickness is about 1 millimeter, and side length is 10-30mm, and sample cell body C is flow The pool has a square cross section, and two convex lenses L1 and L2 are glued on the symmetrical working surface of the pool body 1 . When in use, a strip array photodetector is arranged on the focal plane of the convex lens, and the laser beam that has been expanded and converged enters the sample cell from a plane without a lens, and the forward scattering information of the particles is detected by the usual semi-circular detector. The side scatter and back scatter information is detected by a strip-array detector located at the focal plane of the lens, thereby obtaining omnidirectional particle scatter information.

Embodiment 2

[0026] as attached figure 2 Shown, the particle size test sample cell of the present invention, its structure comprises the sample cell body C that is made of metal material, the wall thickness of sample cell body C is about 1 millimeter, and side length is 10-30mm, and sample cell body C is The container with the bottom cover has a parallelogram in cross section, and two convex lenses L1 and L2 are glued on the symmetrical working surface of the pool body 1 . On the side wall of the sample cell body C where the convex lenses L1, L2 are installed and on the side wall where the converging laser beam is incident, there are respectively provided through holes K1, K2. When in use, the sample suspension containing particles flows through the sample cell body C and passes through The processed converging laser beam is incident on the sample cell body C, the side scattered light and back scattered light are collected on the strip array detector by the convex lenses L1 and L2 respect...

Embodiment 3

[0028] as attached image 3 Shown, the particle size test sample cell of the present invention, its structure comprises the sample cell body C that the side wall of making with quartz glass is transparent, and wall thickness is about about 1 millimeter, and side length is 10-30mm, and sample cell body C is flow The pool has a hexagonal cross section, and two convex lenses L1 and L2 are glued on the symmetrical working surface of the pool body 1 . When in use, the particle-containing sample suspension flows through the sample cell body C, the processed converged laser beam enters the sample cell body C, and the side scattered light and back scattered light are respectively converged on the strip array detector by the convex lenses L1 and L2 , the forward scattered light is received by the main detector of the semi-circular array, thereby obtaining the information of particle scattering in all directions.

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Abstract

The invention provides a particle size testing sample cell, which belongs to the field of particle size testing equipment fittings. The structure of the sample cell comprises a sample cell body capable of transmitting light, wherein the sample cell body has a hollow structure; the cross section of the sample cell body is an even polygon which has not less than four sides and has a working surface with at least one group of parallel opposite sides; and a convex lens is attached to the working surface of the cell body at least. When the sample cell is in use, a focal plane of the convex lens is provided with a strip-shaped array photodetector; a laser beam which is expanded and gathered is emitted into the sample cell from a lensless plane; forward scattering information of particles is detected by a common semicircular-ring detector; and the lateral scattering and backscattering information of the particles is detected by a banded array detector, and then the omnidirectional scattering information of the particles can be obtained. Compared with the prior art, the particle size testing sample cell has the maximum scattering angle of tests as 135 degrees, has no dead angle in a test range, and is large in pipeline cross section and large in flow; therefore, the sample cell is beneficial to on-line particle size tests and capable of greatly improving the analysis precision of laser particle size analyzers.

Description

(1) Technical field [0001] The invention relates to a particle size test equipment accessory, in particular to a particle size test sample pool. (2) Background technology [0002] At present, when the laser particle size analyzer is used to test powder materials, the sample cell cross-section is usually narrow and strip-shaped, and the aspect ratio is above 3. The sample is in the shape of a sheet in the sample cell, and the beam is incident vertically from the large working surface. It is suitable for the measurement of forward scattering, so the measurement range is above 0.3 microns. (3) Contents of the invention [0003] The technical task of the present invention is to provide a particle size test sample pool with large test scattering angle and high precision aiming at the deficiencies of the prior art. It can effectively solve the detection problem of all-round scattered light, so that the maximum scattering angle of the test exceeds 135 degrees, and there is no de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/02G01N21/51
Inventor 任中京
Owner 任中京
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