Drawer type drying device for infrared spectrometer

Abstract

The invention provides a drawer type drying device for an infrared spectrometer. The drawer type drying device comprises a shell, a drying unit and a leakage-proof piston, wherein the shell is arranged on the inner wall of an irradiation cavity, and a communicating hole is formed in the side wall of the shell; the drying unit comprises a supporting mesh enclosure and a mounting base; the supporting mesh enclosure is arranged on the end surface of the mounting base; a locking cutting groove is formed in the side wall of the mounting base, a locking rod matched with the locking cutting groove is arranged on the inner wall of the shell, and the position of the drying unit can be locked through the locking rod and the locking cutting groove; the leakage-proof piston is arranged in the shell and comprises a piston head and a spring, and one end of the piston head is connected with the end face of the closed end of the shell through a spring. And after the drying unit retreats from the working position, the piston head can seal the communicating hole. According to the drawer type drying device for the infrared spectrometer, the replacement efficiency of the drying device can be improved, and external air is prevented from entering the spectrometer during replacement.

Description

technical field [0001] The invention belongs to the field of spectrum detection equipment, and in particular relates to a drawer-type drying device for infrared spectrometers. Background technique [0002] Infrared spectrometer is an instrument that uses the difference in the absorption characteristics of substances for infrared radiation to analyze the molecular structure and chemical composition of objects. When performing detection, the light source needs to irradiate the object to be tested through the crystal film, and the composition of the object can be known through the spectrum generated by the irradiation. Since the crystal film is usually made of potassium bromide or other crystals with strong water absorption, the moisture in the air will be absorbed by the crystal film. When the crystal film is damp, the detection results of the spectrometer will be affected, which greatly shortens the time of the spectrometer. service life. [0003] In the prior art, in order...

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Problems solved by technology

The existing drying device is usually installed inside the spectrometer, so it is difficult to replace it. When replacing, the staff need to disassemble the entire spectrometer to remove the drying device, which will waste a lot of working time

In addition, when the replacement work is carried out, the irradiation chamber inside the spectrometer will be directly connected with the external environment. At this time, the external air containing moisture will come into contact with the crystal film, so the crystal film may be affected by moisture during the replacement process of the drying device. Affect the service life of the crystal film

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