Turntable sample injection device for circular sheet-shaped micro measurement sample

Abstract

The invention discloses a turntable sample injection device for a circular sheet-shaped micro measurement sample. A large circular hole is reserved above the metal flat plate; a sample disc is mountedin the large circular hole through an electric turntable; a motor is arranged at the bottom of the electric turntable; a measuring drawer is arranged on one side of the motor; sample grooves which are spaced by the same distance are formed in the sample disc in the circumferential direction; the sample grooves are used for vertically measuring samples, sample grooves are formed in the positions,corresponding to the sample grooves in the sample disc in a one-to-one mode, of the metal flat plate, a vertically-through groove opening is formed in the front portion of the metal flat plate, a metal sample feeding pipe is installed below the groove opening, and a zero point positioning structure is arranged on the edge of one side of the sample disc. The sample turntable is integrally fixed inthe measuring equipment, and the samples are vertically placed, so that the number of the samples which can be loaded at one time can reach 200, and meanwhile, large-scale sample measurement is realized. Accurate measurement is realized, and effective management and control of results are realized. The device is free of annual maintenance. The system can realize manual and automatic integration.

Description

technical field [0001] The invention relates to thermoluminescence and optical luminescence for environmental monitoring, sanitation disease control, nuclear power and military applications [0002] In the technical field of measuring equipment, it specifically relates to a turntable sample feeding device for circular sheet-shaped micro-measurement samples. Background technique [0003] Thermoluminescent or optical luminescent readout devices are mainly used in personal and environmental dose equivalent monitoring for environmental, health, nuclear power and military applications. Generally used sample (disc) size such as figure 1 Shown: 4.5mm in diameter, 0.8mm in height, or 4.5*4.5 square pieces or other sizes. At present, the general-purpose thermoluminescence measurement equipment adopts manual installation or removal of the measured samples on the heating plate, and puts the samples one by one, which is inefficient in manual work. [0004] Existing thermoluminescence...

AI Technical Summary

Problems solved by technology

Measurement is inefficient and consumes a lot of gas and electricity

[0007] 2. The vacuum adsorption sampling method has high requirements on the flatness of the sample. Domestic thermoluminescent sheets are all made of powder die-casting, and the surface flatness is far from that of vacuum adsorption, so samples often fall After the missed test

[0008] 3. Since the sample turntable is integrated into the measuring device, the size of the turntable should not be too large, which will seriously affect the loading quantity of samples for one measurement

At present, the maximum loading capacity of foreign brands (HARSHAW5500) is 50 samples at a time, which is not conducive to large-scale rapid measurement

[0009] 4. Loading the sample disk in the vacuum adsorption mode into the measuring equipment is not conducive to the operator to monitor whether the measurement is successful, and the measurement process cannot be stopped, and the results of the sample measurement and reading are one-time and cannot be repeated, which brings great difficulties to the management of measurement results. to great uncertainty

[0010] 5. The vacuum adsorption method relies heavily on the vacuum system that comes with the equipment, and uses heated gas to achieve measurement. The structure of the vacuum system is responsible, and regular maintenance and cleaning of impurities discharged from the vacuum system are required. Professionals need to open the equipment for maintenance

[0011] 6. The vacuum adsorption method needs to place the sample flat into a circular groove of the same size as the sample. The size of the sample is small, and it is inconvenient to load and take out the sample with tweezers

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