Dry powder particle and filter membrane analyzer

Abstract

The utility model relates to the technical field of particle measurement, particularly provides a dry powder particle and filter membrane analyzer, and aims to solve the problem that the existing dry powder particle and filter membrane analyzer is too long in a certain direction and occupies too much space. In order to achieve the purpose, the dry powder particle and filter membrane analyzer disclosed by the utility model comprises a rack, and a light source is arranged on the rack; the reflecting mirror is arranged in front of the light source along the propagation direction of light in the light source, a reflecting surface is arranged on the reflecting mirror, and the reflecting surface and the propagation direction of the light in the light source form a certain angle and are not vertical; the object carrying plate is used for placing a sample to be detected, the object carrying plate is movably arranged on the rack, and when the object carrying plate moves to a position to be detected, the object carrying plate is arranged behind the reflecting mirror along the propagation direction of the reflected light; and the camera assembly is used for receiving the reflected light and imaging. According to the utility model, the propagation distance of the light path in a certain direction is reduced by adopting a light path folding mode, so that the length and the occupied area of the analyzer in a certain direction are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of particle measurement, and particularly provides a dry powder particle and filter membrane analyzer. Background Art

[0002] Existing dry powder particle and filter membrane analyzers mainly include a light source, a carrier plate, a moving support plate and a camera assembly. The detection process of the dry powder particle and filter membrane analyzer is as follows: after placing the sample to be measured on the carrier plate, the carrier plate is placed on the moving support plate, and the moving support plate drives the carrier plate to move to the position to be measured. The light source in the analyzer passes through the sample to be measured on the carrier plate and then enters the camera assembly for imaging, and then the acquired image is transmitted to the data processing unit for analysis and calculation. The existing dry powder particle and filter membrane analyzer adopts a straight light path, resulting in too long length of the instrument in a certain direction, occupying too much space and being inconvenient to use.

[0003] Correspondingly, the field needs a new technical solution to solve the above problems. Summary of the Utility Model

[0004] The utility model aims to solve the above technical problems, that is, to solve the problem that the existing dry powder particle and filter membrane analyzer is too long in a certain direction and occupies too much space. For this purpose, the utility model provides a dry powder particle and filter membrane analyzer, including: a frame, a light source, the light source is arranged on the frame; a reflector, the reflector is arranged in front of the light source along the propagation direction of the light in the light source, the reflector is provided with a reflecting surface, the reflecting surface forms a certain angle with the propagation direction of the light in the light source and is not perpendicular, and the reflecting surface is used for reflecting the light from the light source; a carrier plate, the carrier plate is used for placing the sample to be measured, the carrier plate is movably arranged on the frame, and when the carrier plate moves to the position to be measured, it is arranged behind the reflector along the propagation direction of the reflected light; a camera assembly, the camera assembly is arranged behind the carrier plate along the propagation direction of the reflected light, and is used for receiving the reflected light passing through the carrier plate.

[0005] In the above specific embodiment of the dry powder particle and filter membrane analyzer, the dry powder particle and filter membrane analyzer further includes: an annular light source, the annular light source is arranged between the carrier plate and the camera assembly, and is used for forming a diffuse reflection between the carrier plate and the camera assembly.

[0006] In the above specific embodiment of the dry powder particle and filter membrane analyzer, the dry powder particle and filter membrane analyzer further includes: a moving support plate, the moving support plate is provided with a mounting hole for placing the carrier plate; a moving device, the moving support plate is arranged on the moving device, and the moving device is used for driving the moving support plate to slide along the first direction and / or the second direction, so as to drive the carrier plate to move from the sample placing position to the position to be measured.

[0007] In the above specific embodiment of the dry powder particle and filter membrane analyzer, the mobile device includes: a first lead screw rotatably arranged on the frame in a first direction, a first slider threadedly arranged on the first lead screw, and a sliding plate arranged on the first slider; a second lead screw rotatably arranged on the sliding plate in a second direction, a second slider threadedly arranged on the second lead screw, and a moving support plate arranged on the second slider.

[0008] In the above specific embodiment of the dry powder particle and filter membrane analyzer, the mobile device further includes: a first slide rail arranged in parallel with the first lead screw on the frame, a third slider slidably arranged on the first slide rail, one end of the sliding plate is arranged on the first slider, and the other end is arranged on the third slider; a second slide rail arranged in parallel with the second lead screw on the sliding plate, a fourth slider slidably arranged on the second slide rail, one end of the moving support plate is arranged on the second slider, and the other end is arranged on the fourth slider.

[0009] In the above specific embodiment of the dry powder particle and filter membrane analyzer, the mobile device further includes: a first driving device, the output end of the first driving device is connected to the first lead screw for driving the first lead screw to rotate; a second driving device, the output end of the second driving device is connected to the second lead screw for driving the second lead screw to rotate.

[0010] In the above specific embodiment of the dry powder particle and filter membrane analyzer, the frame is provided with: a horizontal partition plate arranged horizontally above the moving support plate, a through hole is arranged on the horizontal partition plate, and the through hole is configured to enable the carrier plate to pass through; a vertical partition plate arranged vertically above the moving support plate; the vertical partition plate and the horizontal partition plate divide the space inside the frame into a dispersion chamber and a test chamber, a light source, a reflector and a camera assembly are arranged in the test chamber, and the dispersion chamber is communicated with the outside.

[0011] In the above specific embodiment of the dry powder particle and filter membrane analyzer, a particulate matter observation lamp is arranged on the vertical partition plate, and the light of the particulate matter observation lamp shines towards the through hole.

[0012] In the above specific embodiment of the dry powder particle and filter membrane analyzer, a light-transmitting hole is arranged on the sliding plate for communicating with the mounting hole; the dry powder particle and filter membrane analyzer further includes: a drawer arranged below the sliding plate, between the first lead screw and the first slide rail, for receiving the measured sample dropped from the mounting hole.

[0013] In the above specific embodiment of the dry powder particle and filter membrane analyzer, an indicator lamp is further arranged on the frame.

[0014] In the case of adopting the above technical solution, the present utility model converts the original straight optical path into a folded optical path, reducing the propagation distance of the optical path in a certain direction, and thus reducing the length and floor area of the analyzer in a certain direction. Specifically, the incident light emitted by the light source irradiates onto the reflecting surface of the reflecting mirror to form reflected light. The reflecting surface changes the original propagation direction of the incident light, forming a certain angle between the reflected light and the incident light. The reflected light passes through the sample to be measured on the stage and then irradiates into the camera assembly for imaging. The folded optical path reduces the floor space of the analyzer in a certain direction, facilitating placement and use. Description of the Drawings

[0015] The following describes the preferred embodiments of the present utility model with reference to the drawings. In the drawings:

[0016] Figure 1 is the overall structural schematic diagram of the dry powder particle and filter membrane analyzer in the present utility model;

[0017] Figure 2 is the structural schematic diagram of the dry powder particle and filter membrane analyzer in a certain perspective, showing the horizontal partition board and the vertical partition board;

[0018] Figure 3 is the structural schematic diagram of the dry powder particle and filter membrane analyzer in another perspective, where the stage is located at the sample placement position;

[0019] Figure 4 is the structural schematic diagram of the moving device in the present utility model.

[0020] In the drawings: 1, frame; 2, light source; 3, reflecting mirror; 4, reflecting surface; 5, stage; 6, camera assembly; 7, annular light source; 8, moving tray; 9, mounting hole; 10, moving device; 11, first lead screw; 12, first slider; 13, sliding plate; 14, second lead screw; 15, second slider; 16, first slide rail; 17, third slider; 18, second slide rail; 19, fourth slider; 20, horizontal partition board; 21, through hole; 22, vertical partition board; 23, dispersion chamber; 24, test chamber; 25, particulate matter observation lamp; 26, drawer; 27, indicator lamp; 28, first driving device; 29, second driving device. Detailed Embodiments

[0021] The following describes the preferred embodiments of the present utility model with reference to the drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principle of the present utility model and are not used to limit the protection scope of the present utility model. Those skilled in the art can make adjustments according to needs to adapt to specific application scenarios.

[0022] It should be noted that in the description of the present utility model, the terms "upper", "lower", "left", "right", "inner", "outer" and other terms indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is only for convenience of description and does not indicate or imply that the relevant devices or components must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, ordinal numbers such as "first", "second" are only for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0023] In addition, it should be noted that in the description of the present utility model, unless otherwise clearly specified and defined, the terms "installation" and "connection" should be understood in a broad sense. For example, it 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 directly connected or indirectly connected through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0024] Furthermore, in order to more clearly show the core technical solution of the present utility model, the description of the well-known structures of the camera assembly is omitted in the following description. However, this omission is only for convenience of description and does not mean that the camera assembly can be without these structures.

[0025] As Figures 1-3 shown, the present utility model provides a dry powder particle and filter membrane analyzer, including: a frame 1, a light source 2, the light source 2 is arranged on the frame 1, and the light source 2 can be a parallel light source. A reflector 3, the reflector 3 is arranged in front of the light source 2 along the propagation direction of the light in the light source 2, a reflecting surface 4 is arranged on the reflector 3, and the reflecting surface 4 forms a certain angle with the propagation direction of the light in the light source 2 and is not perpendicular. The reflecting surface 4 is used for reflecting the light from the light source 2. A carrier plate 5, the carrier plate 5 is used to place the sample to be measured, the carrier plate 5 can be made of glass, the carrier plate 5 is movably arranged on the frame 1, and when the carrier plate 5 moves to the position to be measured, it is arranged behind the reflector 3 along the propagation direction of the reflected light; a camera assembly 6, the camera assembly 6 is arranged behind the carrier plate 5 along the propagation direction of the reflected light and is used to receive the reflected light passing through the carrier plate 5. The camera assembly 6 includes a lens and a camera. After the reflected light enters the lens and the camera in sequence, an image of the sample to be measured is formed. The lens can be a telecentric auto-focusing lens, and the camera can be a high-resolution area array camera. The dry powder particle and filter membrane analyzer further includes a data processing unit, and the acquired image is transmitted to the data processing unit for analysis and calculation.

[0026] The optical path of the original analyzer is a straight optical path, and the light in the light source directly passes through the stage and enters the camera assembly. In this embodiment, in order to solve the problem that the existing dry powder particle and filter membrane analyzer is too long in a certain direction and occupies too much space, the original straight optical path is converted into a folded optical path, which reduces the propagation distance of the optical path in a certain direction, and further reduces the length and floor area of the analyzer in a certain direction. Specifically, the incident light emitted by the light source 2 irradiates on the reflecting surface 4 of the reflector 3 to form a reflected light. The reflecting surface 4 changes the original propagation direction of the incident light, so that an angle is formed between the reflected light and the incident light. The reflected light passes through the sample to be measured on the stage 5 and then irradiates on the camera assembly 6. After receiving the reflected light, the camera assembly 6 forms a corresponding image. The folded optical path reduces the floor space of the analyzer in a certain direction, which is convenient for placement and use.

[0027] Figure 3 In [the figure], the reflecting surface 4 forms a 45° angle with the propagation direction of the light in the light source 2, and the incident light and the reflected light are perpendicular to each other. In this way, the length of the optical path can be minimized along both the incident direction and the reflected direction. In addition, the reflecting surface 4 can form an arbitrary angle with the propagation direction of the light in the light source 2, as long as the reflected light can enter the camera assembly 6 for imaging.

[0028] Further, as Figures 1-3 shown, the dry powder particle and filter membrane analyzer further includes: an annular light source 7, which is arranged between the stage 5 and the camera assembly 6 and is used to form a diffuse reflection between the stage 5 and the camera assembly 6. The light of the annular light source 7 irradiates on the fine particles on the stage 5 at a certain angle and then is reflected into the camera assembly 6 for imaging. During actual use, the light source 2 or the annular light source 7 can be selected according to needs.

[0029] Further, as Figure 1 shown, a horizontal partition plate 20 is provided on the frame 1. The horizontal partition plate 20 is arranged above the movable pallet 8 in the horizontal direction. A through hole 21 is provided on the horizontal partition plate 20, and the through hole 21 is configured to enable the stage 5 to pass through. The stage 5 is placed on the movable pallet 8 from the outside through the through hole 21; a vertical partition plate 22 is arranged above the movable pallet 8 in the vertical direction; the vertical partition plate 22 and the horizontal partition plate 20 divide the space inside the frame 1 into a dispersion chamber 23 and a test chamber 24. In order to reduce the influence of external stray light on the detection, the dispersion chamber 23 and the test chamber 24 are provided. The light source 2, the reflector 3 and the camera assembly 6 are arranged in the test chamber 24. The vertical partition plate 22 and the horizontal partition plate 20 block the external light outside the test chamber 24 as much as possible. The dispersion chamber 23 is communicated with the outside, and the stage 5 is taken and placed in the dispersion chamber 23 from the outside.

[0030] Further, as Figures 1-4As shown in the figure, the dry powder particle and filter membrane analyzer further includes: a moving pallet 8, on which an installation hole 9 for placing the carrier plate 5 is provided; a moving device 10, the moving pallet 8 is arranged on the moving device 10, and the moving device 10 is used to drive the moving pallet 8 to slide along the first direction and / or the second direction, so as to drive the carrier plate 5 to move from the sample placement position to the position to be measured.

[0031] During detection, the carrier plate 5 needs to be located between the camera assembly 6 and the mirror 3. If the carrier plate is directly placed at the position to be detected, it will cause external light to irradiate into the test chamber 24, and at the same time, it is not convenient to place the carrier plate 5. To avoid external light and facilitate the placement of the carrier plate 5, the moving pallet 8 and the moving device 10 are provided. The moving device 10 can move along the first direction and the second direction. The first direction is the length direction, represented by X in the figure, and the second direction is the width direction, represented by Y in the figure. The moving pallet 8 is arranged on the moving device 10 and moves under the drive of the moving device 10. When the installation hole 9 on the moving pallet 8 is located below the through hole 21, the carrier plate 5 is placed in the installation hole 9, and this position is the sample placement position. Then, the moving device 10 drives the carrier plate 5 to the position between the camera assembly 6 and the mirror 3 through the moving pallet 8, and this position is the position to be measured.

[0032] Further, as Figure 4 shown in the figure, the moving device 10 includes: a first lead screw 11, which is rotatably arranged on the frame 1 along the first direction, a first slider 12 is threadedly arranged on the first lead screw 11, and when the first lead screw 11 rotates, it drives the first slider 12 to move along the first direction. A sliding plate 13 is arranged on the first slider 12 and moves along with the first slider 12; a second lead screw 14, which is rotatably arranged on the sliding plate 13 along the second direction, a second slider 15 is threadedly arranged on the second lead screw 14, and when the second lead screw 14 rotates, it drives the second slider 15 to move along the second direction. The moving pallet 8 is arranged on the second slider 15 and moves along with the second slider 15. In this embodiment, the first lead screw 11 and the second lead screw 14 can drive the moving pallet 8 to move along the first direction and the second direction, which can not only move the carrier plate 5 between the sample placement position and the position to be measured, but also adjust the detection field of view in two directions.

[0033] Further, in order to enable the moving pallet 8 to move more stably in the first direction and the second reverse direction, the moving device 10 further includes: a first slide rail 16, which is arranged in parallel with the first lead screw 11 on the frame 1. A third slider 17 is slidably arranged on the first slide rail 16. One end of the sliding plate 13 is arranged on the first slider 12, and the other end is arranged on the third slider 17. The third slider 17 slides along with the sliding plate 13, enabling the sliding plate 13 to slide smoothly in the first direction. A second slide rail 18, which is arranged in parallel with the second lead screw 14 on the sliding plate 13. A fourth slider 19 is slidably arranged on the second slide rail 18. One end of the moving pallet 8 is arranged on the second slider 15, and the other end is arranged on the fourth slider 19. The fourth slider 19 slides along with the moving pallet 8, enabling the moving pallet 8 to slide smoothly in the second direction.

[0034] The moving device 10 further includes: a first driving device 28, the output end of the first driving device 28 is connected to the first lead screw 11, for driving the first lead screw 11 to rotate; a second driving device 29, the output end of the second driving device 29 is connected to the second lead screw 14, for driving the second lead screw 14 to rotate.

[0035] A particulate matter observation lamp 25 is arranged on the vertical partition plate 22, and the light of the particulate matter observation lamp 25 shines towards the through hole 21. After the carrier plate 5 is placed at the sample laying position, the dispersion condition of the particulate matter is observed through the particulate matter observation lamp 25.

[0036] As Figures 1-3 shown, a light transmission hole is arranged on the sliding plate 13, and the light transmission hole is used to communicate with the mounting hole 9. When the carrier plate 5 moves to the position to be measured, the sliding plate 13 is located above the light source 2. After the light of the light source 2 irradiates on the reflection surface 4, the reflected light sequentially passes through the light transmission hole and the mounting hole 9 and irradiates on the sample to be measured on the carrier plate 5, and finally enters the camera assembly 6 for imaging.

[0037] The dry powder particle and filter membrane analyzer further includes: a drawer 26, the drawer 26 is arranged below the sliding plate 13, between the first lead screw 11 and the first slide rail 16, for receiving the measured sample dropped from the mounting hole 9. When the drawer 26 needs to be cleaned, the drawer 26 can be pulled out along the first direction.

[0038] As Figures 1-2 shown, an indicator lamp 27 is further arranged on the frame 1. The indicator lamp 27 is connected to the control unit. The indicator lamp 27 can be a breathing lamp, and its brightness and hue are adjusted by the control unit. For example, when the test is in progress, the control unit controls the indicator lamp 27 to turn green. When the test is completed, the control unit controls the indicator lamp 27 to turn blue. When a fault occurs in the instrument, the control unit controls the indicator lamp 27 to turn red. The current working state can be judged through the color of the lamp, and the test progress can be confirmed without the user observing repeatedly.

[0039] Those skilled in the art can understand that although some of the embodiments described herein include certain features included in other embodiments rather than other features, the combination of features of different embodiments means that it is within the scope of this application and forms different embodiments. For example, in the claims of this application, any one of the claimed embodiments can be used in any combination.

[0040] So far, the technical solutions of the present utility model have been described in conjunction with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present utility model is obviously not limited to these specific embodiments. Without departing from the principle of the present utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present utility model.

Claims

1. A dry powder particle and filter membrane analyzer, characterized in that: include: Rack(1), A light source (2), wherein the light source (2) is arranged on the frame (1); a reflector (3), the reflector (3) being arranged in front of the light source (2) along the propagation direction of the light in the light source (2), the reflector (3) being provided with a reflective surface (4), the reflective surface (4) being at a certain angle to the propagation direction of the light in the light source (2) and not perpendicular, the reflective surface (4) being used to reflect the light from the light source (2); A loading plate (5), the loading plate (5) being used to place a sample to be tested, the loading plate (5) being movably arranged on the frame (1), and being arranged behind the reflector (3) along the propagation direction of the reflected light when the loading plate (5) moves to a position to be tested; A camera assembly (6), wherein the camera assembly (6) is arranged behind the object carrier (5) along the propagation direction of the reflected light, and is used to receive the reflected light passing through the object carrier (5).

2. The dry powder particle and filter membrane analyzer according to claim 1, characterized in that: The dry powder particles and filter membrane analyzer also includes: An annular light source (7), the annular light source (7) being arranged between the object carrier plate (5) and the camera assembly (6) and being used to form diffuse reflection between the object carrier plate (5) and the camera assembly (6).

3. The dry powder particle and filter membrane analyzer according to claim 1, characterized in that: The dry powder particles and filter membrane analyzer also includes: A movable support plate (8), wherein the movable support plate (8) is provided with a mounting hole (9) for placing the object carrier plate (5); A moving device (10), wherein the moving support plate (8) is arranged on the moving device (10), and the moving device (10) is used to drive the moving support plate (8) to slide along a first direction and / or a second direction, so as to drive the loading plate (5) to move from a sample placement position to a position to be measured.

4. The dry powder particle and filter membrane analyzer according to claim 3, characterized in that: The mobile device (10) comprises: A first lead screw (11) is rotatably arranged on the frame (1) along a first direction, a first slider (12) is threadedly arranged on the first lead screw (11), and a sliding plate (13) is arranged on the first slider (12); A second lead screw (14) is rotatably arranged on the sliding plate (13) along a second direction, a second slider (15) is threadedly arranged on the second lead screw (14), and the movable support plate (8) is arranged on the second slider (15).

5. The dry powder particle and filter membrane analyzer according to claim 4, characterized in that: The mobile device (10) further comprises: a first slide rail (16) arranged on the frame (1) in parallel with the first lead screw (11); a third slider (17) being slidably arranged on the first slide rail (16); one end of the slide plate (13) being arranged on the first slider (12) and the other end being arranged on the third slider (17); A second slide rail (18) is arranged on the sliding plate (13) in parallel with the second lead screw (14); a fourth slider (19) is slidably arranged on the second slide rail (18); one end of the movable support plate (8) is arranged on the second slider (15), and the other end is arranged on the fourth slider (19).

6. The dry powder particle and filter membrane analyzer according to claim 4, characterized in that: The mobile device (10) further comprises: a first driving device (28), wherein an output end of the first driving device (28) is connected to the first lead screw (11) and is used to drive the first lead screw (11) to rotate; A second driving device (29), wherein an output end of the second driving device (29) is connected to the second lead screw (14) and is used to drive the second lead screw (14) to rotate.

7. The dry powder particle and filter membrane analyzer according to claim 3, characterized in that: The frame (1) is provided with: a horizontal partition plate (20), the horizontal partition plate (20) being arranged above the movable support plate (8) in a horizontal direction, the horizontal partition plate (20) being provided with a through hole (21), the through hole (21) being configured to allow the object carrier plate (5) to pass through; A vertical partition plate (22), the vertical partition plate (22) being arranged above the movable support plate (8) in a vertical direction; The vertical partition plate (22) and the horizontal partition plate (20) divide the space in the rack (1) into a dispersion chamber (23) and a test chamber (24); the light source (2), the reflector (3) and the camera assembly (6) are arranged in the test chamber (24); and the dispersion chamber (23) is in communication with the outside.

8. The dry powder particle and filter membrane analyzer according to claim 7, characterized in that: A particle observation lamp (25) is provided on the vertical partition plate (22), and light from the particle observation lamp (25) is irradiated toward the through hole (21).

9. The dry powder particle and filter membrane analyzer according to claim 5, characterized in that: The sliding plate (13) is provided with a light-transmitting hole, and the light-transmitting hole is used to communicate with the mounting hole (9); The dry powder particle and filter membrane analyzer also includes a drawer (26), which is arranged below the sliding plate (13) and between the first lead screw (11) and the first slide rail (16), and is used to receive the sample to be tested that falls from the mounting hole (9).

10. The dry powder particle and filter membrane analyzer according to claim 1, characterized in that: The frame (1) is also provided with an indicator light (27).

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