Sampling protection device and graphite furnace atomic absorption spectrometer

Abstract

The utility model discloses a sampling protection device and a graphite furnace atomic absorption spectrometer. The sampling protection device comprises a sample placing box and a protection assembly, the sample placing box comprises a box body and a cover plate, one or more reagent grooves for placing samples are formed in the box body, and the cover plate is mounted at the top of the box body; the protection assembly comprises a protection plate and a pressing frame, a plurality of holes corresponding to the reagent grooves are formed in the protection plate in a penetrating mode, and the holes are covered with plastic films; the protection plate is detachably installed at the bottom of the pressing frame, and the pressing frame is detachably installed on the edge of the top of the box body. A groove is formed in the edge of the top of the box body, the pressing frame comprises an outer frame, a sealing ring is arranged at the bottom of the outer frame, and the sealing ring is pressed in the groove. According to the utility model, the sampling protection device is additionally arranged, and the protection plate covers the placement groove in which a sample reagent is placed, so that gas generated by a sample in the sampling process is prevented from diffusing to the surrounding environment, and the inhalation of workers is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of sampling and testing, in particular to a sampling protection device and a graphite furnace atomic absorption spectrometer adopting the sampling protection device. Background Art

[0002] Graphite furnace atomic absorption spectrometer is a commonly used analytical instrument, which is mainly used to determine the content of metal elements in samples. This instrument uses a graphite furnace to heat the sample, atomize the metal elements in the sample, and then uses absorption spectroscopy technology to measure the characteristic spectral lines of atomic absorption, thereby determining the concentration of metal elements in the sample.

[0003] At present, the sampling heads of some graphite furnace atomic absorption spectrometers directly sample from conical flasks placed in the laboratory. Since the conical flasks are open, the gases emitted by the samples are inhaled by the workers in large quantities, affecting their health. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a sampling protection device and a graphite furnace atomic absorption spectrometer to achieve the purpose of preventing the diffusion of reagent gas.

[0005] In order to solve the above technical problems, according to one aspect of the utility model, a sampling protection device is provided, comprising:

[0006] ——A sample placement box; the sample placement box comprises a box body and a cover plate, wherein one or more reagent slots for placing samples are arranged in the box body, and the cover plate is mounted on the top of the box body;

[0007] ——Protective component; the protective component includes a protective plate and a pressing frame, the protective plate is penetrated with a plurality of holes corresponding to the reagent slots, and the holes are covered with a plastic film; the protective plate is detachably mounted on the bottom of the pressing frame, and the pressing frame is detachably mounted on the top edge of the box body.

[0008] Furthermore, a groove is formed on the top edge of the box body, and the pressing frame comprises an external frame, a sealing ring is arranged at the bottom of the external frame, and the sealing ring is pressed in the groove.

[0009] Furthermore, the outer frame is circular, and a cross-shaped support frame is connected to the middle of the outer frame.

[0010] Furthermore, the cross-sections of the box body and the cover plate are both circular, and the cover plate is connected to the top of the box body via a rotating shaft arranged on one side of the box body.

[0011] According to another aspect of the utility model, a graphite furnace atomic absorption spectrometer is provided, including an instrument body, a support platform is arranged on the outer shell of the instrument body, and the above-mentioned sampling protection device is installed on the support platform.

[0012] The utility model adds a sampling protection device on the basis of the existing graphite furnace atomic absorption spectrometer. The protection plate covers the placement slot where the sample reagent is placed, which reduces the diffusion of gas generated by the sample to the surrounding environment during the sampling process, thereby reducing the inhalation of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings herein are used to provide further description of the present invention and constitute a part of the present application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0014] Figure 1 The utility model provides a graphite furnace atomic absorption spectrometer including a sampling protection device;

[0015] Figure 2 It is a schematic diagram of the structure of the sample placement box;

[0016] Figure 3 It is a schematic diagram of the structure of the protection board;

[0017] Figure 4 It is a structural schematic diagram of the clamping frame.

[0018] In the figure, 1-box body, 2-cover plate, 3-reagent tank, 4-protection plate, 5-external frame, 6-plastic film, 7-groove, 8-sealing ring, 9-support frame, 10-housing, 11-support platform. DETAILED DESCRIPTION

[0019] In order to make those skilled in the art better understand the present invention, the present invention is further explained in detail below with reference to the accompanying drawings and embodiments. It should be noted that the features in the embodiments and embodiments of the present application can be combined with each other without conflict.

[0020] A typical embodiment of the utility model provides a sampling protection device, which comprises a sample placement box and a protection component.

[0021] like Figure 2 As shown, the sample placement box includes a box body 1 and a cover plate 2 . One or more reagent slots 3 for placing samples are arranged in the box body 1 , and the cover plate 2 is installed on the top of the box body 1 .

[0022] like Figure 3 and Figure 4 As shown, the protection component includes a protection plate 4 and a pressing frame. The protection plate 4 is penetrated with multiple holes corresponding to the reagent tanks 3, and the holes are covered with a plastic film 6; the protection plate 4 is detachably mounted on the bottom of the pressing frame, and the pressing frame is detachably mounted on the top edge of the box body 1.

[0023] According to the above embodiment, the test reagent is injected into the reagent tank 3, the protection plate is fixed to the top of the box body 1 by the clamping frame, each plastic film 6 is closely attached to the open end of the reagent tank 3 to prevent the diffusion of the gas emitted by the sample, and then the cover plate 2 is covered on the top of the box body 1. During the test, the sampling protection device is moved as a whole and fixed to the housing of the graphite furnace atomic absorption spectrometer, the cover plate is opened, and the plastic film 6 above the test reagent is pierced with the sampling head of the instrument, and the sampling head starts sampling in the reagent tank 3.

[0024] The protection plate in the above protection assembly is replaced after a set of sampling is completed. The protection plate 4 can be made of cardboard or hard plastic board, so that holes can be opened thereon and the plastic film 6 can be set.

[0025] In a preferred embodiment, a groove 7 is formed on the top edge of the box body 1, and the pressing frame 5 includes an outer frame 5, and a sealing ring 8 is provided at the bottom of the outer frame 5, and the sealing ring 8 is pressed in the groove. The contact surface of the box body 1 and the outer frame 5 is sealed by the sealing ring 8, which can further prevent gas diffusion.

[0026] In a preferred embodiment, the outer frame 5 is circular, and a cross support frame 9 is connected to the middle of the outer frame 5 to improve the overall support strength of the outer frame 5 .

[0027] In a relatively specific implementation, the cross-sections of the box body 1 and the cover plate 2 are both circular, and the cover plate 1 is connected to the top of the box body via a rotating shaft arranged on one side of the box body.

[0028] Another typical embodiment of the present invention provides a graphite furnace atomic absorption spectrometer, including an instrument body. A support platform 11 is arranged on a shell 10 of the instrument body, and the above-mentioned sampling protection device is installed on the support platform 11.

[0029] The scope of protection claimed by the present invention is not limited to the above specific implementation methods. For those skilled in the art, the present invention may have various deformations and changes. Any modification, improvement and equivalent substitution made within the concept and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A sampling protection device, characterized in that: include: ——A sample placement box; the sample placement box comprises a box body and a cover plate, wherein one or more reagent slots for placing samples are arranged in the box body, and the cover plate is mounted on the top of the box body; ——Protective component; the protective component includes a protective plate and a pressing frame, the protective plate is penetrated with a plurality of holes corresponding to the reagent slots, and the holes are covered with a plastic film; the protective plate is detachably mounted on the bottom of the pressing frame, and the pressing frame is detachably mounted on the top edge of the box body.

2. The sampling protection device according to claim 1, characterized in that: A groove is formed on the top edge of the box body, and the pressing frame comprises an external frame. A sealing ring is arranged at the bottom of the external frame, and the sealing ring is pressed tightly in the groove.

3. The sampling protection device according to claim 2, characterized in that: The outer frame is circular, and a cross-shaped support frame is connected to the middle of the outer frame.

4. The sampling protection device according to claim 1 or 3, characterized in that: The cross sections of the box body and the cover plate are both circular, and the cover plate is connected to the top of the box body via a rotating shaft arranged on one side of the box body.

5. A graphite furnace atomic absorption spectrometer, comprising an instrument body, characterized in that: A support platform is arranged on the outer shell of the instrument body, and the sampling protection device according to any one of claims 1 to 4 is installed on the support platform.

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