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Positioning feeder for solid samples

A feeding device and sample technology, applied in the direction of measuring devices, material analysis through optical means, instruments, etc., can solve the problems of unsuitable working space range instruments, sampling position deviation, inaccurate measurement, etc., to achieve easy disassembly, Easy to troubleshoot and easy to install

Active Publication Date: 2022-06-21
BEIJING BEIFEN RUILI ANALYTICAL INSTR GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its complex structure and large volume, it is not suitable for instruments with narrow working space
However, manual sample injection will cause sample scattering and sample injection position deviation due to vibration, resulting in inaccurate measurement and poor repeatability.

Method used

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  • Positioning feeder for solid samples
  • Positioning feeder for solid samples
  • Positioning feeder for solid samples

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] The invention provides a positioning and feeding device for a solid sample, which is composed of a feeding arm and a clamping device.

[0031] like figure 1 , figure 2 and image 3 As shown, the feeding arm consists of a release lever 1, a release button 2, a handle 3, a transmission shaft 4, a square shaft body 5, a sampling cantilever 6, a return spring 7, a return spring shaft 8, and a v-shaped lower positioning pliers 9 , graphite sample spoon 10, upper positioning pliers 11, positioning sleeve 12, ball pressure nail 13, positioning spring 14, ball 15, steel ball 16, adjustment block 17, shaft nail 18, limit block 19 and limit nail 32.

[0032] like figure 1 , one end of the transmission shaft 4 is screwed into the return spring shaft 8, the return spring shaft 8 is sleeved into the return spring 7, the transmission shaft 4, the return spring shaft 8 and the return spring 7 are integrally inserted into the square shaft body 5, and the return spring 7 elastically...

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Abstract

The invention provides a positioning and feeding device for solid samples, which is composed of a feeding arm and a clamping device. The feeding arm has a shaft body and a transmission shaft extending downward into the shaft body, and is respectively connected with an upper positioning clamp and a lower positioning clamp. Positioning pliers; a return spring is elastically abutted between the transmission shaft and the shaft, so that the upper end of the transmission shaft can be operated to separate the lower positioning pliers from the upper positioning pliers; the feed arm also has a The outer wall of the shaft body is non-rotatably connected to the sample injection cantilever. The shaft body can be vertically displaced relative to the sample injection cantilever, and can stay at any height position within the range of predetermined height positions; the clamping device has the ability to move horizontally and longitudinally The relative displacement of the linear guide rail and the slide block, the position of the linear guide rail is fixed, and the slide block is fixedly connected with the sample injection cantilever. The invention can accurately position and feed solid samples, has small positional errors for repeated sample feeding, can feed and take out operations in a narrow space, has small displacement errors, and is easy to install.

Description

technical field [0001] The present invention relates to a sampling device for solid samples used in atomic absorption spectrometry analysis. Background technique [0002] In the analysis of atomic absorption spectrometry, samples with complex matrix, easily contaminated samples, samples with low content, and samples that are difficult to digest are the technical difficulties of atomic absorption analysis. And the vast majority of errors in atomic absorption occur in sample pretreatment, so it is best to avoid sample pretreatment for trace analysis. The graphite furnace technology method of direct injection of solid samples provides a direct analysis method for analysis and solves the problem. The application of solid sampling technology to graphite furnace atomic absorption spectrometry does not require sample digestion, no memory effect, no cross-contamination of samples, and does not change the properties of the original sample; the analysis process is simple, and the ana...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/01G01N21/31
CPCG01N21/01G01N21/3103
Inventor 樊荣李晓晨王旭兵周梅
Owner BEIJING BEIFEN RUILI ANALYTICAL INSTR GROUP
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