Rapid detection equipment based on collinear double-pulse LIBS (Laser-induced Breakdown Spectroscopy)

Abstract

The utility model discloses rapid detection equipment based on collinear double-pulse LIBS (Laser-induced Breakdown Spectroscopy), which belongs to the field of rapid detection equipment and comprises a lower box body, an upper box body, a laser generator, a laser emission lens barrel, a focusing lens, a three-dimensional displacement platform, a spectrograph, a light receiving lens, an air pump, an air blowing pipe and an air outlet fan. During use, firstly, a to-be-measured substance is placed on the three-dimensional displacement platform, the position of the to-be-measured substance is adjusted through the three-dimensional displacement platform, then the air pump works to blow the to-be-measured substance through the air blowing pipe, then dust on the to-be-measured substance is blown up, and the dust in the lower box body is discharged outwards under the action of the air outlet fan. Then the laser generator works and emits laser outwards through the laser emission lens barrel, the laser is irradiated to a to-be-detected substance after being condensed by the focusing lens, the substance is vaporized, light is collected by the light receiving lens and is transmitted to the spectrograph through the optical fiber, and the spectrograph is used for carrying out spectral analysis on the light to judge the composition of the to-be-detected substance.

Description

Technical Field

[0001] The utility model relates to the field of rapid detection equipment, in particular to a rapid detection equipment based on collinear double-pulse LIBS. Background Art

[0002] At present, LIBS is the abbreviation of laser induced breakdown spectrometry. This technology uses the plasma generated by pulsed laser to ablate and excite the material in the sample (usually solid), and obtains the spectrum emitted by the excited plasma atoms through the spectrometer to identify the elemental composition in the sample, and then the material can be identified, classified, qualitatively and quantitatively analyzed. This technology does not require pretreatment of the sample, and can quickly realize remote and minimally destructive detection of sample elements (especially metal elements), and can be used for the detection of solid, gas, and liquid samples. The application fields of laser induced breakdown spectroscopy are also very wide, such as biomedicine, archaeology, environmental monitoring, heavy metal detection in water, and explosive detection. However, most of the detection devices based on colinear double-pulse LIBS technology are currently large in size, difficult to move and carry, and cannot achieve rapid detection at the detection site.

[0003] In the prior art, patent announcement number CN206362708U discloses a rapid detection device based on co-linear double-pulse LIBS technology, comprising a main body, a detection device installed at the bottom of the inner cavity of the main body, a heat sink installed on the left side of the detection device, a first shock-absorbing pad, a transverse partition plate and a heat dissipation fan are arranged in sequence from top to bottom in the space formed by the left side wall of the main body and the heat sink, an access groove is opened on the left side of the outer wall of the main body, and a first interface and a second interface are arranged in sequence from front to back on the right side wall of the inner cavity of the access groove, the center of the rear edge of the top of the main body is rotatably connected to the upper cover through a damping shaft, a second shock-absorbing pad is embedded in the inner cavity of the upper cover, and an indicator light, a display and a speaker are arranged in sequence on the front end surface of the second shock-absorbing pad from top to bottom.

[0004] The above technical solution solves the problems in the above background technology, but in actual use, samples such as solid samples usually contain impurities such as dust, which will affect the detection results. Although the above technical solution adopts a closed method to prevent the entry of external dust, it has no effect on the dust impurities existing on the surface of the sample. Therefore, a rapid detection device based on collinear double-pulse LIBS that solves the above problem is needed. Utility Model Content

[0005] The purpose of the utility model is to solve the problem raised in the background technology, and designs a rapid detection device based on collinear double-pulse LIBS.

[0006] To achieve the above-mentioned purpose, the technical solution of the utility model is a rapid detection device based on collinear double-pulse LIBS, comprising a lower box, an upper box, a laser generator, a laser emitting lens barrel, a focusing lens, a three-dimensional displacement platform, a spectrometer, a light collecting mirror, an air pump, an air pipe, and an air outlet fan. The upper box is placed on the lower box, the laser generator is installed in the upper box, the output end of the laser generator is connected to the laser emitting lens barrel, the focusing lens is installed on the lower box below the laser emitting lens barrel, the three-dimensional displacement platform is installed on the lower box below the focusing lens, the spectrometer is installed in the lower box, the light collecting mirror is installed on the spectrometer, the air pump is installed in the lower box, the air outlet end of the air pump is installed with an air pipe, the outlet of the air pipe faces the upper surface of the three-dimensional displacement platform, and the air outlet fan is installed on the lower box on the opposite side of the air pipe.

[0007] Furthermore, a lightweight rotating plate is rotatably mounted on the outer side of the air outlet fan.

[0008] Furthermore, the lower end of the laser emitting lens barrel is slidably inserted into the lower box body, and an insert plate is slidably inserted into one side of the laser emitting lens barrel on the upper part of the lower box body.

[0009] Furthermore, an air intake filter is installed at the air intake end of the air pump.

[0010] Furthermore, the lower box body and the upper box body are box structures with a handle on the right side.

[0011] Beneficial effects:

[0012] The utility model provides a rapid detection device based on collinear double-pulse LIBS, which has the following beneficial effects. Through its structural design, the device adjusts the position of the material to be tested through a three-dimensional displacement platform, and then the air pump works to blow the material to be tested through the air blowing pipe, so that the dust on the material to be tested is blown up, and the dust in the lower box is discharged outwardly under the action of the air outlet fan, and then the laser generator works to emit laser outwardly through the laser emission lens barrel, and after being focused by a focusing lens, it is irradiated on the material to be tested, and after the material is vaporized, the light is collected by a light collecting mirror and transmitted to a spectrometer through an optical fiber, and the light is spectrally analyzed by the spectrometer to determine the composition of the material to be tested, so that the device realizes the processing of dust attached to the material to be tested, and through the detachable structure of the upper box and the lower box, it is convenient to carry the upper box and the lower box separately, thereby further increasing the portability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the rapid detection device based on collinear double-pulse LIBS described in the utility model;

[0014] Figure 2It is a schematic diagram of the external structure of the rapid detection device based on collinear double-pulse LIBS described in the utility model.

[0015] In the figure, 1. lower box; 2. upper box; 3. laser generator; 4. laser emitting lens barrel; 5. focusing lens; 6. three-dimensional displacement platform; 7. spectrometer; 8. light collecting mirror; 9. air pump; 10. air blowing pipe; 11. air outlet fan; 12. lightweight rotating plate; 13. plug-in plate; 14. air intake filter. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] In the description of the present invention, it should be noted that the terms "upper / lower end", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0018] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "setting / sleeving", "sleeve connection", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0019] See also Figure 1-2The utility model provides a technical solution: a rapid detection device based on collinear double-pulse LIBS, comprising a lower box 1, an upper box 2, a laser generator 3, a laser emission lens barrel 4, a focusing lens 5, a three-dimensional displacement platform 6, a spectrometer 7, a light collecting mirror 8, an air pump 9, an air pipe 10, and an air outlet fan 11. The upper box 2 is placed on the lower box 1, the laser generator 3 is installed in the upper box 2, the output end of the laser generator 3 is connected to the laser emission lens barrel 4, the focusing lens 5 is installed on the lower box 1 below the laser emission lens barrel 4, the three-dimensional displacement platform 6 is installed on the lower box 1 below the focusing lens 5, the spectrometer 7 is installed in the lower box 1, the light collecting mirror 8 is installed on the spectrometer 7, the air pump 9 is installed in the lower box 1, the air outlet end of the air pump 9 is installed with an air pipe 10, the outlet of the air pipe 10 faces the upper surface of the three-dimensional displacement platform 6, and the air outlet fan 11 is installed on the lower box 1 on the opposite side of the air pipe 10.

[0020] In the utility model, a light rotating plate 12 is rotatably installed on the outer side of the air outlet fan 11, and the light rotating plate 12 shields the outlet of the air outlet fan 11. When the air outlet fan 11 is working, the light rotating plate 12 is pushed open.

[0021] In the utility model, the lower end of the laser emitting lens barrel 4 is slidably inserted into the lower box body 1, and an insert plate 13 is slidably inserted into one side of the laser emitting lens barrel 4 on the upper part of the lower box body 1. When not assembled, the insert plate 13 is used to shield the lower box body 1.

[0022] In the utility model, an air intake filter 14 is installed at the air intake end of the air pump 9, and the air intake end of the air pump 9 is filtered through the air intake filter 14.

[0023] In the utility model, the lower box body 1 and the upper box body 2 are box structures with handles on the right side, so as to facilitate the carrying of the lower box body 1 and the upper box body 2.

[0024] Through the personnel in this field, all the electrical components in this case are connected to their corresponding power supplies through wires, and a suitable controller should be selected according to the actual situation to meet the control requirements. The specific connection and control sequence should refer to the following working principle, and the electrical connection between the electrical components is completed in the order of working in sequence. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process, and no longer explains the electrical control.

[0025] In this embodiment:

[0026] When in use, first place the material to be tested on the three-dimensional displacement platform 6, adjust the position of the material to be tested by the three-dimensional displacement platform 6, then the air pump 9 works to blow the material to be tested through the air blowing pipe 10, so that the dust on the material to be tested is blown up, and the dust in the lower box 1 is discharged outward under the action of the air outlet fan 11, and then the laser generator 3 works to emit laser outward through the laser emitting lens tube 4, and after being focused by the focusing lens 5, it is irradiated on the material to be tested, and after the material is vaporized, the light is collected by the light collecting mirror 8 and transmitted to the spectrometer 7 through the optical fiber, and the light is spectrally analyzed by the spectrometer 7 to determine the composition of the material to be tested.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rapid detection device based on collinear double-pulse LIBS, comprising a lower box (1), an upper box (2), a laser generator (3), a laser emission lens barrel (4), a focusing lens (5), a three-dimensional displacement platform (6), a spectrometer (7), a light collecting mirror (8), an air pump (9), an air blowing pipe (10), and an air outlet fan (11), characterized in that: An upper box (2) is placed on the lower box (1), a laser generator (3) is installed in the upper box (2), the output end of the laser generator (3) is connected to a laser emitting lens barrel (4), a focusing lens (5) is installed on the lower box (1) below the laser emitting lens barrel (4), a three-dimensional displacement platform (6) is installed on the lower box (1) below the focusing lens (5), a spectrometer (7) is installed in the lower box (1), a light collecting mirror (8) is installed on the spectrometer (7), an air pump (9) is installed in the lower box (1), an air outlet end of the air pump (9) is installed with an air blowing pipe (10), the outlet of the air blowing pipe (10) faces the upper surface of the three-dimensional displacement platform (6), and an air outlet fan (11) is installed on the lower box (1) on the opposite side of the air blowing pipe (10).

2. The rapid detection device based on collinear double-pulse LIBS according to claim 1 is characterized in that: A light rotating plate (12) is rotatably mounted on the outer side of the air outlet fan (11).

3. The rapid detection device based on collinear double-pulse LIBS according to claim 1 is characterized in that: The lower end of the laser emitting lens barrel (4) is slidably inserted into the lower box body (1), and an insert plate (13) is slidably inserted into one side of the upper laser emitting lens barrel (4) of the lower box body (1).

4. The rapid detection device based on collinear double-pulse LIBS according to claim 1 is characterized in that: An air intake filter (14) is installed at the air intake end of the air pump (9).

5. The rapid detection device based on collinear double-pulse LIBS according to claim 1 is characterized in that: The lower box body (1) and the upper box body (2) are box body structures with a handle on the right side.

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