Laser-induced breakdown spectrometer for multi-sample detection

Abstract

The utility model relates to a laser-induced breakdown spectrometer for multi-sample detection, which comprises a base body, a spectrum acquisition part and a loading part, spectrum signal acquisition of an object to be detected is completed at the spectrum acquisition part, the loading part is provided with a plurality of loading ends, the loading part and the base body are arranged in a relatively movable manner, and the loading part is provided with a plurality of loading ends. And in the moving process of the carrying part, the plurality of carrying ends are kept to pass through the spectrum acquisition part in sequence. According to the utility model, through the movable relationship between the object carrying part and the base body, various samples to be detected can be respectively placed on the plurality of object carrying ends at the same time, so that the plurality of samples are kept to pass through the spectrum acquisition part in sequence in the moving process of the object carrying part, and the analysis of the plurality of samples can be completed in sequence; and the efficiency of multi-sample batch analysis is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to material analysis equipment technical field, specifically a kind of laser-induced breakdown spectrograph of multiple sample detection. BACKGROUND

[0002] Laser-induced breakdown spectroscopy (LIBS) is used to analyze elements by using high-energy pulsed laser and material interaction to form plasma on the material and emit spectrum, compared with traditional spectrum measurement technology, LIBS technology has the characteristics of simultaneous multiple element analysis, non-destructive or non-contact to the measured object, small recontamination probability and fast analysis speed;

[0003] Based on the above-mentioned technology, most of the devices of this kind currently place the sample in a closed environment for spectral analysis, and analyze one sample at a time, which cannot place multiple samples at the same time, resulting in slower speed and lower efficiency in batch analysis of the measured sample. SUMMARY

[0004] This section is intended to outline some aspects of the embodiments of the present utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the utility model name to avoid obscuring the purpose of this section, the abstract of the specification and the utility model name, and such simplifications or omissions cannot be used to limit the scope of the present utility model.

[0005] To solve the problems in the above background art, the present utility model provides the following technical solutions:

[0006] A laser-induced breakdown spectrograph for multiple sample detection, comprising a base body, and:

[0007] A spectrum acquisition part is arranged at a fixed position on the base body, and the measured object completes spectrum signal acquisition at the spectrum acquisition part.

[0008] A carrier part has multiple carrier ends, and the carrier part and the base body are arranged to be relatively movable, and the multiple carrier ends are arranged to pass through the spectrum acquisition part in sequence during movement of the carrier part.

[0009] As a preferred technical solution of the laser-induced breakdown spectrograph for multiple sample detection, the spectrum acquisition part has an insertion end above the moving path of the carrier end, the carrier end is slidably connected to the carrier part, and the carrier end is supported by the base body when passing through the insertion end.

[0010] As a preferred technical solution of the laser-induced breakdown spectrograph for multiple sample detection, the carrier part is rotatably connected to the base body.

[0011] As a kind of preferred technical scheme of laser-induced breakdown spectrograph of multiple sample detection, the support end is fixed on the matrix, and it is located on the path of the object end.

[0012] As a kind of preferred technical scheme of laser-induced breakdown spectrograph of multiple sample detection, the buffer surface is configured on the object end, and the buffer surface forms an inclined angle with the horizontal direction.

[0013] As a kind of preferred technical scheme of laser-induced breakdown spectrograph of multiple sample detection, the spectrum acquisition part includes a light collector, the light collector is used to converge the spectrum signal, and the insertion end is located at one end of the light collector.

[0014] The laser-induced breakdown spectrograph of multiple sample detection has the beneficial effects that: through the movable relationship between the object part and the matrix, multiple samples to be detected can be placed on the multiple object ends at the same time, so that the multiple samples can pass through the spectrum acquisition part in turn during the movement of the object part, and the analysis of the multiple samples can be completed in turn, thereby improving the efficiency of batch analysis of multiple samples compared with the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor. Among them:

[0016] Figure 1 It is a perspective view of one embodiment of the present application.

[0017] Figure 2 It is a front view of Figure 1 .

[0018] Figure 3 It is a perspective view of part of the structure in Figure 1 .

[0019] Figure 4 It is a split view of the structure shown in Figure 3 .

[0020] Figure 5 It is a working schematic view of the spectrum acquisition part in the embodiment of the present application.

[0021] Reference signs: 1, matrix; 2, spectrum acquisition part; 201, light collector; 202, optical fiber; 203, laser emission source; 3, object part; 4, object end; 5, insertion end; 6, support end; 7, buffer surface. DETAILED DESCRIPTION

[0022] In order to make the above objectives, characteristics and advantages of the present application more apparent, concrete embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0023] In the following description, a large number of specific details are set forth in order to facilitate a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the connotation of the present application, therefore the present application is not limited by the specific embodiments disclosed below.

[0024] Secondly, the "one embodiment" or "embodiment" referred to herein means that a specific feature, structure or characteristic can be included in at least one implementation of the present application. "In one embodiment" appearing in different places in the specification does not mean the same embodiment, nor is it an embodiment that is independent of or mutually exclusive of other embodiments.

[0025] Thirdly, the present application is described in detail in conjunction with the schematic diagram, and in order to facilitate description, the cross-sectional view of the device structure will be partially enlarged without general proportion when the embodiments of the present application are described in detail, and the schematic diagram is only an example, which should not limit the scope of protection of the present application herein. In addition, three-dimensional spatial dimensions including length, width and depth should be included in actual manufacture.

[0026] REFERENCE Figures 1-3 For the first embodiment of the present application, the embodiment provides a laser-induced breakdown spectrometer for multiple sample detection, which comprises a device main body (hereinafter referred to as a main body 1), and the main body 1 comprises a spectrum acquisition part 2 and a spectrum analyzer. In addition, the present application also comprises a carrier part 3, specifically, the carrier part 3 has a plurality of carrier ends 4, the carrier part 3 and the main body 1 are relatively movably arranged, and the plurality of carrier ends 4 can pass through the spectrum acquisition part 2 in turn during the movement of the carrier part 3.

[0027] In the process of analyzing the substances of the multiple samples, the multiple samples are respectively placed on the plurality of carrier ends 4, and the plurality of carrier ends 4 pass through the spectrum acquisition part 2 in turn during the movement of the carrier part 3. In this process, the spectrum acquisition part 2 realizes laser processing of the measured object, thereby exciting a spectrum signal, collecting the spectrum signal, and finally transmitting the spectrum signal into the spectrum analyzer. After one movement cycle of the carrier part 3, the sequential analysis process of the multiple samples is completed. The present application has the advantage that multiple measured samples can be placed at the same time before the substance analysis, and compared with the process of taking and placing one sample at a time in the prior art, the present application has higher efficiency when realizing batch analysis of multiple samples.

[0028] Further, referring to Figures 2-5 , the spectrum acquisition part 2 has a placement end 5 above the moving path of the sample end 4, when the sample end 4 is at the placement end 5, the sample placed can be kept at the position required for analysis, the sample end 4 is in sliding fit with the sample part 3, the sliding direction is vertical, when the sample end 4 passes the placement end 5, it can be supported upward by the base 1 to keep the sample end 4 at the placement end 5, when the sample part 3 moves to make the sample end 4 deviate from the support, the sample end 4 leaves the placement end 5, so that the sample leaves the position for analysis;

[0029] Specifically, for the movement of the sample part 3, the sample part 3 is in rotational fit with the base 1, multiple sample ends 4 are located at the periphery of the rotation axis of the sample part 3, and corresponding driving devices such as motors are arranged on the base 1, so that the rotation of the sample part 3 can be driven.

[0030] For the supporting mode of the sample end 4, referring to Figure 2 and Figure 3 , the base 1 is fixedly provided with a supporting end 6, which is located on the passing path of the sample end 4 and below the placement end 5, when the sample end 4 passes below the placement end 5, it is lifted by the supporting end 6, so that the sample is extended to the position required for analysis.

[0031] Further, referring to Figure 4 , the sample end 4 is further provided with a buffer surface 7, which forms an inclined angle with the horizontal direction, the buffer surface 7 is two and used to contact the supporting end 6, through the inclined arrangement of the buffer surface 7, the supporting end 6 is slowly lifted in the process of contacting and leaving the sample end 4, and finally slowly moves downward, so that the stability of the sample placing process can be ensured.

[0032] For the spectrum acquisition part 2, referring to Figure 2 , Figure 3 and Figure 5 , the spectrum acquisition part 2 includes a light collecting cover 201, an optical fiber 202 and a laser emitting source 203, the light collecting cover 201 is used for converging the spectrum signal, the optical fiber 202 is located at one end of the upper part of the light collecting cover 201, the end of the optical fiber 202 is connected to a spectrum analyzer, the placement end 5 is the bottom end of the light collecting cover 201, and the laser emitting source 203 is located at one side of the light collecting cover 201, when the sample end 4 is lifted, the sample thereon is just inside the bottom end of the light collecting cover 201, so that the laser emitting source 203 just acts on the sample when emitting laser, the sample forms a plasma and excites a spectrum signal, as shown in Figure 5 , the spectrum signal can be transmitted to the optical fiber 202 under the reflection of the inner wall of the light collecting cover 201, so as to conduct the signal to the spectrum analyzer for material analysis.

[0033] It is to be understood that the development making of the numerous implementation decisions during the development of any embodiment is a design choice. Such development efforts might be complex and time consuming, but would nevertheless be a routine undertaking for those of ordinary skill in the art having the benefit of this disclosure.

[0034] It should be noted that the above examples are only used to illustrate the technical scheme of the present application, and are not limited. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical scheme of the present application can be modified or replaced by equivalent, without departing from the spirit and scope of the technical scheme of the present application. They should be covered in the scope of the claims of the present application.

Claims

1. A laser-induced breakdown spectrometer for multi-sample detection comprising a base, characterized in that: Also include: Spectrum acquisition part, configured in the fixed position on the base, the measured object is at the spectrum acquisition part complete spectrum signal acquisition, the spectrum acquisition part includes a light trap, the light trap is used for converging spectrum signal, one end of the light trap has a put-in end; The carrier has a plurality of carrier ends, and the carrier is relatively movably arranged with the base. The carrier moves and keeps the plurality of carrier ends passing through the spectrum acquisition part in sequence.

2. The multi-sample detection laser-induced breakdown spectrometer of claim 1, wherein: The spectrum acquisition part has a put-in end above the moving path of the carrier end. The carrier end is slidably connected with the carrier. When the carrier end passes through the put-in end, the carrier end is supported by the base.

3. The multi-sample detection laser-induced breakdown spectrometer of claim 2, wherein: The carrier is rotatably connected with the base.

4. The multi-sample detection laser-induced breakdown spectrometer of claim 2, wherein: The base is fixedly provided with a supporting end on the path through which the carrier end passes.

5. The multi-sample detection laser-induced breakdown spectrometer of claim 2, wherein: The carrier end is provided with a buffer surface, and an inclination angle is formed between the buffer surface and the horizontal direction.

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