A Rotating Structure Used in Multi-collimator of X Fluorescence Spectrometer

Abstract

The invention discloses a multi-collimator rotating structure for an X fluorescence spectrophotometer. The rotating structure comprises a plurality of circular structural components and a plurality of columnar rolling components, wherein the circular structural components are made of metals and are combined into concentric circles, and cross sections of the circular structural components are rectangular or circular; the columnar rolling components are arranged inside supporting spaces formed by the circular structural components; parallel surfaces on the inner sides or outer sides of the circular structural components are in tight contact with the outer surfaces of the columnar rolling components; the columnar rolling components are vertically arranged; round surfaces formed by the circular structural components are perpendicular to the middle axes of the columnar rolling components; gaps formed by contacting the columnar rolling components and the circular structural components are smaller than lengths of the columnar rolling components. According to the multi-collimator rotating structure disclosed by the invention, the defects of the original bearing can be replaced, the volume of the rolling components can be increased, the overall mechanical property and service life are improved, the design is simple, and the overall structure can be small on the same required mechanical property. Meanwhile, the adopted columnar structure rollers are convenient to mount compared with spherical rollers, and the stability is high.

Description

technical field [0001] The invention belongs to the field of X-ray fluorescence spectrometers, in particular to a rotating structure of a multi-collimator. Background technique [0002] X-rays or other sources of photons excite atoms in the substance to be measured, causing them to fluoresce (secondary X-rays). An instrument for analyzing the composition of substances. X-ray fluorescence spectrometer, also known as XRF spectrometer, has two types: dispersive type and non-dispersive type. The dispersion type is divided into wavelength dispersion type and energy dispersion type. The wavelength dispersive XRF spectrometer is composed of X-ray tube excitation source, spectroscopic system, detector system, vacuum system and gas flow system. According to the different focusing geometry conditions of the analyzed crystal, it can be divided into non-focus reflective flat crystal type, semi-focus reflective curved crystal type, full-focus reflective curved crystal type, semi-focus...

AI Technical Summary

Problems solved by technology

The principle is: after the sample is irradiated by X-rays, the electrons in the inner shell of the element’s atoms are excited, and the shell electrons transition to emit the characteristic X-rays of the element. The wavelength (energy) of the characteristic X-rays of the element is measured by the detector. ) strength and concentration ratio, quantitative analysis can be carried out, its advantage is not to destroy the sample, the analysis speed is fast, it is suitable for the determination of all chemical elements with atomic number above 4, the analysis accuracy is high, and the sample preparation is simple; and there is no such thing in China at present Commercial sequential wavelength dispersive X-ray fluorescence spectrometer, so the corresponding equipment is still in the blank stage, so this equipment needs to be further developed, and in order to be able to measure multiple types of material components more effectively, it is necessary to use multiple collimators , the current technology does not have a convenient structure of multiple collimators available, and at the same time, the fusion of multiple collimators needs to be easy to operate and moderate in structure to be suitable for corresponding equipment, so it is not easy to adopt the existing technology structure, and it is also Need to find a new structure

Images