Centering and aligning integrated laser particle analyzer

Abstract

The utility model discloses a centering and aligning integrated laser particle analyzer, and aims to overcome the defects that an existing laser particle analyzer is not beneficial to miniaturization and is poor in stability. The scheme comprises a centering structure, a diaphragm structure and a light source assembly. The centering structure comprises a displacement sliding table and a detector plate, one side of the displacement sliding table is connected with the detector plate, the other side of the displacement sliding table is connected with a supporting plate, and the supporting plate is connected with a bottom supporting structure through a triangular supporting frame. The diaphragm structure comprises an alignment diaphragm, the alignment diaphragm is connected with one end of a centering alignment module connecting plate through a damping rotating shaft, and the other end of the centering alignment module connecting plate is connected with the supporting plate. The light source assembly is fixed to the bottom supporting structure through the light source fixing assembly. The laser particle analyzer has the beneficial effects that miniaturization, integration and high precision of the laser particle analyzer are realized, connection and gaps among parts are reduced, the overall size and weight are reduced, the laser particle analyzer is convenient to carry and mount, and meanwhile, the stability and the measurement precision of a system are improved.

Description

Technical Field

[0001] This utility model relates to the field of particle size measurement technology, and in particular to an integrated laser particle size analyzer with center alignment. Background Technology

[0002] Particle size measurement technology has wide applications in materials science, pharmaceuticals, and chemical engineering. Laser particle size analyzers use lasers as a light source and utilize the principle of light scattering to measure the size and distribution of particles. When a laser beam illuminates a particle, the particle scatters light signals. These scattered light signals are received by a photodetector after passing through an optical system and converted into electrical signals. By measuring the intensity of the scattered light at different angles, and combining scattering theory and algorithms, the particle size distribution can be deduced.

[0003] When measuring particle size, ensuring that the laser beam accurately and stably illuminates the sample and effectively collects and analyzes the scattered light signal is crucial. Alignment refers to aligning the center of the laser beam with the center of the sample to avoid measurement errors caused by positional deviations. Criterion refers to adjusting the illumination angle and position of the laser beam to accurately illuminate the optimal measurement area of ​​the sample. The accuracy of alignment directly affects the precision and stability of the measurement.

[0004] In a laser particle size analyzer, the aperture limits the aperture of the light beam, controlling its divergence angle and intensity distribution. Adjusting the aperture size optimizes beam quality and improves measurement accuracy. Furthermore, the aperture serves as a reference point for centering and alignment, aiding in precise alignment.

[0005] Currently, laser particle size analyzers typically employ independent centering and alignment systems to ensure the laser beam accurately illuminates the sample and effectively collects and analyzes the light signals scattered by particles. This independent system increases the complexity and size of the instrument, hindering miniaturization and portability. The connection and debugging process between these independent systems is cumbersome and prone to errors, affecting measurement accuracy and stability. Furthermore, existing systems lack stability and are easily affected by external vibrations and environmental changes, leading to unstable measurement results. Therefore, a new method or device is needed to address these issues. Utility Model Content

[0006] The purpose of this invention is to provide an integrated laser particle size analyzer with center alignment, so as to overcome the shortcomings of the existing technology, such as its unfavorable miniaturization and poor stability.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An integrated laser particle size analyzer for centering and alignment, characterized in that it comprises:

[0009] The centering structure includes a displacement slide and a detector plate. One side of the displacement slide is connected to the detector plate, and the other side is connected to a support plate. The support plate is connected to a bottom support structure via a triangular support frame.

[0010] The aperture structure includes an alignment aperture, which is connected to one end of an alignment module connecting plate via a damping pivot, and the other end of the alignment module connecting plate is connected to a support plate.

[0011] The light source assembly is fixed to the bottom support structure by the light source fixing assembly.

[0012] The aperture structure also includes a limiting block, which is installed below the alignment aperture.

[0013] The detector plate has openings that correspond one-to-one with the threaded holes of the displacement slide, and the detector plate and the displacement slide are fixed by threaded connection.

[0014] The alignment module connecting plate is connected to the support plate by clamping and is secured with bolts and nuts.

[0015] The damping shaft is connected to the alignment module connecting plate by bolts and nuts.

[0016] The displacement slide and the support plate are connected by threads.

[0017] The triangular support frame is connected to the bottom support structure by bolts and nuts.

[0018] The light source assembly includes a fiber laser, which is connected to the sleeve via an external threaded adapter.

[0019] The light source fixing assembly includes a first fixing bracket and a second fixing bracket. The light source assembly is fixed in the first fixing bracket and the second fixing bracket. A support base is connected below the first fixing bracket and the second fixing bracket. The support base is connected to the bottom support structure through a profile.

[0020] The bottom support structure is made of channel steel.

[0021] Compared with the prior art, the present invention has the following beneficial technical effects:

[0022] An integrated laser particle size analyzer with alignment features a tightly integrated aperture structure and alignment system, achieving miniaturization, integration, and high precision. This integrated design not only reduces connections and gaps between components, lowering the overall size and weight for easier portability and installation, but also improves system stability and measurement accuracy. Optimized structural layout and precision mechanical design and machining ensure a tight fit and accurate alignment between the aperture structure and alignment system. Furthermore, reinforced structural design and stable support methods further enhance the stability of the entire integrated device, making the laser particle size analyzer more stable and reliable during operation. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an integrated laser particle size analyzer for centering and alignment, as described in an embodiment of this utility model.

[0024] Figure 2 This is a schematic diagram of the centering structure and aperture structure installation of an integrated laser particle size analyzer for centering and alignment in an embodiment of this utility model.

[0025] Figure 3 This is a schematic diagram of the displacement slide structure of an integrated laser particle size analyzer for centering and alignment, as described in an embodiment of this utility model.

[0026] Figure 4 This is a schematic diagram illustrating the use of the alignment aperture of an integrated laser particle size analyzer in an embodiment of this utility model.

[0027] Figure 5 This is a schematic diagram of the light source component structure of an integrated laser particle size analyzer for centering and alignment, as described in an embodiment of this utility model.

[0028] Figure 6 This is a schematic diagram of the installation of a centering and alignment integrated laser particle size analyzer light source assembly in an embodiment of this utility model.

[0029] In the figure, 1 is the detector plate, 2 is the displacement slide, 3 is the alignment aperture, 4 is the limiting block, 5 is the triangular support frame, 6 is the support plate, 7 is the centering and alignment module connecting plate, 8 is the damping shaft, 9 is the bottom support structure, 10 is the light source fixing assembly, 11 is the fiber laser, 12 is the external thread adapter, 13 is the sleeve, 101 is the first fixed bracket, 102 is the second fixed bracket, 103 is the support base, and 104 is the profile. Detailed Implementation

[0030] Laser particle size analyzers measure particle size and distribution using the principle of light scattering. A laser beam illuminates the particles, collects the scattered light signal, converts it into an electrical signal, and then deduces the particle size distribution. During the measurement process, ensuring the laser beam accurately and stably illuminates the sample and effectively collects the scattered light signal is crucial. The accuracy of centering and alignment directly affects the measurement precision and stability. An aperture in a laser particle size analyzer is used to limit the beam's aperture, control the beam's divergence angle and intensity distribution, and also serves as a reference point for centering and alignment, thus improving measurement accuracy.

[0031] Currently, laser particle size analyzers typically employ independent centering and alignment systems. This design has the following drawbacks: First, it increases the complexity and size of the instrument, hindering miniaturization and portability. Second, the connection and debugging process between independent systems is cumbersome, easily generating errors and affecting measurement accuracy and stability. Third, the existing systems lack stability and are easily affected by external vibrations and environmental changes, leading to unstable measurement results.

[0032] This invention aims to achieve miniaturization, integration, and high precision of a laser particle size analyzer by innovatively combining the aperture structure and centering system. By optimizing the structural layout and reducing connections and gaps between components, the system's stability and measurement accuracy are improved, while the overall size and weight are reduced, making it easier to carry and install.

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0035] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. 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 an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" means two or more, unless otherwise explicitly specified.

[0037] Reference Figure 1 As shown, this is a specific embodiment of the present invention, a centering and alignment integrated laser particle size analyzer, comprising:

[0038] Centralized structures, such as Figure 2 As shown, the structure mainly includes a displacement slide 2 and a detector plate 1. One side of the displacement slide 2 is connected to the detector plate 1, and the other side is connected to a support plate 6. The displacement slide 2 is used to adjust the focal position of the laser beam, ensuring that the laser beam can accurately illuminate the sample to be tested. By moving the displacement slide 2, the focal position of the laser beam in the sample area can be changed, thereby achieving centering operation.

[0039] The detector plate 1 has openings that correspond one-to-one with the threaded holes of the displacement slide 2. The detector plate 1 and the displacement slide 2 are fixed together by threaded connection. The detector plate 1 is used to install a photodetector to receive the scattered light signal after it has been processed by the optical system and convert it into an electrical signal for subsequent particle size analysis.

[0040] Reference Figure 3 As shown, the connection between the displacement slide 2 and the support plate 6 is specifically achieved by first moving the displacement slide 2 so that one side of the threaded hole is exposed and aligned with the opening on the support plate 6 to tighten the screw. After the connection is completed, the other side is exposed and the connection is tightened in the same way.

[0041] The support plate 6 is connected to the bottom support structure 9 via the triangular support frame 5. As the main support component, the support plate 6 provides installation support for the displacement slide 2 and the centering and alignment module connecting plate 7, ensuring the stability of the entire device.

[0042] The triangular support frame 5 is connected to the bottom support structure 9 by bolts and nuts. The triangular structure of the triangular support frame 5 ensures the stability of the connection, making the entire device more stable and reliable during operation.

[0043] Aperture structure, refer to Figure 2 As shown, the structure mainly includes an alignment stop 3. The alignment stop 3 is connected to one end of the alignment module connecting plate 7 via a damping shaft 8, and the other end of the alignment module connecting plate 7 is connected to the support plate 6. The alignment stop 3 is used to limit the aperture of the light beam, control the divergence angle and intensity distribution of the light beam, and also serves as a reference point for alignment, helping to achieve precise alignment.

[0044] A limit block 4 is installed below the alignment stop 3 to limit its position. When the alignment stop 3 rotates onto the limit block 4, as... Figure 4 As shown in Figure (a), the alignment position of the alignment stop 3 is determined, i.e., the laser source, alignment stop 3, and the detector center are aligned in a straight line. When alignment is not required, the alignment stop 3 is rotated out of the detector's range, as shown in Figure (a). Figure 4 As shown in Figure (b), the damping shaft 8 prevents it from moving arbitrarily, thus ensuring that it does not affect the detection operation.

[0045] like Figure 2 As shown, the alignment module connecting plate 7 is connected to the support plate 6 by clamping and is secured with bolts and nuts. The alignment module connecting plate 7 serves as a support and connector, increasing the overall stability.

[0046] The damping shaft 8 is connected to the alignment module connecting plate 7 by bolts and nuts. The damping shaft 8 is used to mount the alignment aperture 3, allowing it to rotate without moving arbitrarily, providing appropriate damping force to ensure the stability of the alignment aperture 3 during rotation and at rest.

[0047] Light source components, refer to Figure 5 As shown, it includes a fiber laser 11, which is connected to a sleeve 13 via an external threaded adapter 12. The fiber laser 11 serves as the light source for the laser particle size analyzer, emitting a laser beam to provide the light source basis for particle size measurement.

[0048] The external threaded adapter 12 is used to connect the fiber laser 11 and the sleeve 13, serving as a transition and connection, so that the fiber laser 11 and the optical lens can be combined in the same structure, improving the stability of the optical path.

[0049] An optical lens is installed in the sleeve 13 to shape and focus the light beam. The sleeve 13 is connected to the external threaded adapter 12 to form a stable optical path structure.

[0050] Reference Figure 6As shown, the light source fixing assembly 10 includes a first fixing bracket 101 and a second fixing bracket 102. The light source assembly is fixed in the first fixing bracket 101 and the second fixing bracket 102. A support base 103 is connected below the first fixing bracket 101 and the second fixing bracket 102. The support base 103 is connected to the bottom support structure 9 through a profile 104. The light source fixing assembly 10 is used to fix the light source assembly and ensure the stable installation of the light source assembly.

[0051] The bottom support structure 9 is made of channel steel, serving as the installation foundation for the entire device and providing stable support and installation position. The laser support base is connected to the bottom support structure 9 via profiles. The threaded holes at the bottom of the profiles are threaded into the through holes on the bottom support structure 9, and the threaded holes at the top of the profiles are threaded into the countersunk holes on the laser support base for fixation.

[0052] During particle size measurement, the focal position of the laser beam is first adjusted by the displacement slide 2 to accurately illuminate the sample. Then, by rotating the alignment aperture 3 and limiting the position of the limiting block 4, the laser source, alignment aperture 3, and detector center are ensured to be aligned in a straight line, achieving precise alignment. The alignment aperture 3 in the aperture structure limits the light-passing aperture of the beam, controls the divergence angle and intensity distribution of the beam, and optimizes the beam quality. The laser beam emitted by the fiber laser 11 is processed by the optical system and then illuminates the particle sample. The light signal scattered by the particles is received by the photodetector after passing through the optical system and converted into an electrical signal. By measuring the intensity of the scattered light at different angles and combining scattering theory and algorithms, the particle size distribution is deduced.

[0053] The centering and alignment integrated laser particle size analyzer in this embodiment reduces the complexity and size of the instrument by integrating centering and alignment functions, which is beneficial for miniaturization and portability. At the same time, the connection and fastening methods between the components ensure the stability of the entire device, improving measurement accuracy and stability, and effectively solving the problems existing in the prior art.

[0054] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A centering and alignment integrated laser particle size analyzer, characterized in that, include: The centering structure includes a displacement slide (2) and a detector plate (1). One side of the displacement slide (2) is connected to the detector plate (1), and the other side is connected to a support plate (6). The support plate (6) is connected to a bottom support structure (9) through a triangular support frame (5). The aperture structure includes an alignment aperture (3), which is connected to one end of an alignment module connecting plate (7) via a damping pivot (8), and the other end of the alignment module connecting plate (7) is connected to the support plate (6). The light source assembly is fixed to the bottom support structure (9) by a light source fixing assembly (10).

2. The centering and alignment integrated laser particle size analyzer according to claim 1, characterized in that, The aperture structure also includes a limiting block (4), which is installed below the alignment aperture (3).

3. The centering and alignment integrated laser particle size analyzer according to claim 1, characterized in that, The detector plate (1) is provided with openings that correspond one-to-one with the threaded holes of the displacement slide (2), and the detector plate (1) and the displacement slide (2) are fixed by threaded connection.

4. The centering and alignment integrated laser particle size analyzer according to claim 1, characterized in that, The alignment module connecting plate (7) is connected to the support plate (6) by clamping and is fastened with bolts and nuts.

5. The centering and alignment integrated laser particle size analyzer according to claim 1, characterized in that, The damping shaft (8) is connected to the alignment module connecting plate (7) by bolts and nuts.

6. The centering and alignment integrated laser particle size analyzer according to claim 1, characterized in that, The displacement slide (2) and the support plate (6) are connected by threads.

7. The centering and alignment integrated laser particle size analyzer according to claim 1, characterized in that, The triangular support frame (5) is connected to the bottom support structure (9) by bolts and nuts.

8. The centering and alignment integrated laser particle size analyzer according to claim 1, characterized in that, The light source assembly includes a fiber laser (11), which is connected to a sleeve (13) via an external threaded adapter (12).

9. The centering and alignment integrated laser particle size analyzer according to claim 8, characterized in that, The light source fixing assembly (10) includes a first fixing bracket (101) and a second fixing bracket (102). The light source assembly is fixed in the first fixing bracket (101) and the second fixing bracket (102). A support base (103) is connected below the first fixing bracket (101) and the second fixing bracket (102). The support base (103) is connected to the bottom support structure (9) through a profile (104).

10. The centering and alignment integrated laser particle size analyzer according to claim 1, characterized in that, The bottom support structure (9) is a channel steel.

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