Tray assembly and dry powder particle and filter membrane analyzer

Abstract

The utility model relates to the field of particulate matter detection, particularly provides a tray assembly and a dry powder particle and filter membrane analyzer, and aims to solve the problem that a sample tray is not easy to fix in the prior art. In order to achieve the purpose, the tray assembly comprises a sample tray, the sample tray is provided with a first surface and a second surface which are opposite to each other, the first surface is used for being in contact with a moving platform, the sample tray is provided with a first magnetic part, the first magnetic part is used for being attracted with a second magnetic part on the moving platform, and the sample tray is further provided with a light hole. A supporting plate groove is formed in the side wall of the light hole; the sample supporting plate is placed in the supporting plate groove, and the sample supporting plate is used for placing a sample to be tested. According to the utility model, the sample tray can be quickly fixed on the mobile platform in a magnetic attraction fixing mode, and the operation is convenient.

Description

Technical Field

[0001] The utility model relates to the field of particulate matter detection, and particularly provides a tray assembly, a dry powder particle and a filter membrane analyzer. Background Art

[0002] In existing dry powder particle and filter membrane analyzers, a sample tray is used to place a sample to be tested. The detection process of the dry powder particle and filter membrane analyzer is as follows: after placing the sample to be tested on the sample tray, the sample tray is placed on a moving platform, and the moving platform drives the sample tray to move to a detection position. After adjusting the focal length and field of view, the light source in the analyzer passes through the sample to be tested on the tray and then enters the camera assembly for imaging, and then the acquired image is transmitted to a data processing unit for analysis and calculation.

[0003] During the process of the moving platform driving the sample tray to move to the detection position, jitter may occur. If the sample tray is not fixed, the position of the sample tray will shift, resulting in it not being within the imaging range of the camera assembly, and the imaging obtained by the camera assembly will become blurry. In the prior art, generally, the sample tray is manually fixed on the moving platform with nails or pressing pieces, but this fixing method is very inconvenient and takes a relatively long time for fixing.

[0004] Correspondingly, a new technical solution is needed in this field to solve the above problems. Summary of the Utility Model

[0005] The utility model aims to solve the above technical problems, that is, to solve the problem that the sample tray in the prior art is not easy to fix. For this purpose, the utility model provides a tray assembly, including: a sample tray, which has opposite first and second surfaces, the first surface is used to contact the moving platform, a first magnetic member is arranged on the sample tray, the first magnetic member is used to attract a second magnetic member on the moving platform, a light-transmitting hole is also arranged on the sample tray, and a tray groove is arranged on the side wall of the light-transmitting hole; a sample tray board, which is placed in the tray groove and is used to place the sample to be tested.

[0006] In the above specific embodiment with the tray assembly, the tray assembly further includes: a sample pressing plate, which is used to press on one side of the sample tray board close to the second surface.

[0007] In the above specific embodiment with the tray assembly, a pressing plate groove is further arranged on the side wall of the light-transmitting hole, the pressing plate groove is located on the side close to the second surface of the tray groove and is used to accommodate the sample pressing plate. The pressing plate groove has a first side wall, the tray groove has a second side wall, the first side wall and the second side wall are connected by a stepped surface, and the edge of the projection of the first side wall in the first direction is outside the edge of the projection of the second side wall in the first direction.

[0008] In the above specific embodiment with a tray assembly, both the pressure plate groove and the pallet groove are annular grooves, and the diameter of the first side wall is greater than that of the second side wall.

[0009] In the above specific embodiment with a tray assembly, the sample pallet is a single-layer glass plate.

[0010] In the above specific embodiment with a tray assembly, the sample pallet includes a first sample clamping plate and a second sample clamping plate arranged oppositely, and a filter membrane is clamped between the first sample clamping plate and the second sample clamping plate.

[0011] In the above specific embodiment with a tray assembly, the outer edge of the sample tray is polygonal.

[0012] In the above specific embodiment with a tray assembly, the outer edge of the sample tray is octagonal.

[0013] A dry powder particle and filter membrane analyzer includes a moving platform provided with a second magnetic member, a light source and a camera assembly respectively arranged on both sides of the moving platform, and also includes the tray assembly of any one of the above, the tray assembly is placed on the moving platform, and the moving platform is used to move the tray assembly to the detection position.

[0014] In the above specific embodiment with a dry powder particle and filter membrane analyzer, an installation groove is provided on the moving platform, a through hole and a convex platform are provided at the bottom of the installation groove. After the sample tray is placed in the installation groove, the light-transmitting hole is communicated with the through hole, and a second magnetic member is arranged in the convex platform; and / or the installation groove is a square groove, and the inner wall of the installation groove abuts against a part of the outer edge of the sample tray along the horizontal direction.

[0015] In the case of adopting the above technical solution, the utility model can quickly and firmly fix the sample tray on the moving platform through the mutual attraction between the first magnetic member and the second magnetic member on the moving platform, and the operation is convenient. The user only needs to place the sample tray on the moving platform, without the need for the user to manually fix it, and no extra time is required for fixing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following describes the preferred embodiments of the present utility model in conjunction with the drawings, in which:

[0017] Figure 1 is the overall structural schematic diagram of the tray assembly in the present utility model;

[0018] Figure 2 is the structural schematic diagram of the sample tray in the present utility model;

[0019] Figure 3 is the sectional view of the sample tray in the present utility model from a certain perspective;

[0020] Figure 4 is a schematic structural view of the mobile platform in the present utility model;

[0021] Figure 5 is a schematic structural view of the dry powder particle and filter membrane analyzer in the present utility model.

[0022] In the figure: 1. sample tray, 2. first magnetic member, 3. mobile platform, 4. second magnetic member, 5. light-transmitting hole, 6. tray groove, 7. sample tray, 8. sample pressing plate, 9. pressing plate groove, 10. first side wall, 11. second side wall, 12. step surface, 13. installation groove, 14. through hole, 15. boss, 16. first surface, 17. second surface, 18. first installation groove, 19. second installation groove, 20. moving assembly, 21. light source, 22. camera assembly. Specific embodiments

[0023] The following describes the preferred embodiments of the present utility model with reference to the accompanying 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 adjust them as needed to adapt to specific application scenarios.

[0024] It should be noted that in the description of the present utility model, the terms indicating directions or positional relationships such as "upper", "lower", "left", "right", "inner", "outer", etc. 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 elements must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. In addition, ordinal numbers such as "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0025] In addition, it should also be noted that in the description of the present utility model, unless otherwise clearly specified and limited, 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 situations.

[0026] Furthermore, in order to more clearly show the core technical solution of the present utility model, the description below omits the description of the well-known structure of the mobile platform. However, this omission is only for convenience of description and does not mean that the mobile platform can be without these structures.

[0027] Such as Figures 1-5As shown in the figure, the present utility model proposes a tray assembly, including: a sample tray 1, the sample tray 1 has opposite first surface 16 and second surface 17, the first surface 16 is used to contact with the moving platform 3, a first magnetic member 2 is arranged on the sample tray 1, and the first magnetic member 2 is used to attract the second magnetic member 4 on the moving platform 3. A light-transmitting hole 5 is also arranged on the sample tray 1, and a tray groove 6 is arranged on the side wall of the light-transmitting hole 5; a sample tray 7, the sample tray 7 is placed in the tray groove 6, and the sample tray 7 is used to place the sample to be tested.

[0028] In this embodiment, in order to solve the problem that the sample tray is not easy to fix in the prior art, a first magnetic member 2 is arranged on the sample tray 1. After the sample tray 1 is placed on the moving platform 3, the first magnetic member 2 and the second magnetic member 4 on the moving platform 3 attract each other, so that the sample tray 1 is firmly fixed in the moving platform 3. The fixing speed of the magnetic attraction fixing method in this embodiment is very fast, and the operation is convenient. The user only needs to place the sample tray 1 on the moving platform 3, without manual fixing by the user and without spending extra time for fixing.

[0029] In order to enable the light emitted by the light source 21 to pass through the sample tray 1, a light-transmitting hole 5 is arranged on the sample tray 1. After the light passes through the light-transmitting hole 5, it then passes through the sample tray 7 and then enters the camera assembly 22 for imaging. The sample tray 7 is generally made of transparent glass material. The first magnetic member 2 and the second magnetic member 4 can be magnets.

[0030] In this embodiment, a plurality of first mounting grooves 18 are arranged on the sample tray 1, and a first magnetic member 2 is placed in each first mounting groove 18; similarly, a plurality of second mounting grooves 19 are arranged on the moving platform 3, and a second magnetic member 4 is placed in each second mounting groove 19. The positions of the first mounting grooves 18 correspond to the positions of the second mounting grooves 19.

[0031] It should be noted that although Figure 2 the sample tray 1 shown has four first mounting grooves 18, this is not a limitation to the present utility model. Without departing from the basic principle of the present utility model, those skilled in the art can set other numbers of first mounting grooves 18, as long as they can attract the second magnetic member 4. For example, one first mounting groove 18 is arranged along each edge. Figure 2 If the outer edge of the sample tray 1 in

[0032] is octagonal, then eight first mounting grooves 18 are set. Figure 1 Furthermore, as

[0033] Further, as Figure 3 shown, a pressing plate groove 9 is further provided on the side wall of the light-transmitting hole 5. The pressing plate groove 9 is located on the side of the supporting plate groove 6 close to the second surface 17 and is used to accommodate the sample pressing plate 8. The pressing plate groove 9, the supporting plate groove 6 and the light-transmitting hole 5 are arranged in sequence from top to bottom in the vertical direction. The pressing plate groove 9 has a first side wall 10, and the supporting plate groove 6 has a second side wall 11. The first side wall 10 and the second side wall 11 are connected by a step surface 12. The size of the pressing plate groove 9 is larger than that of the supporting plate groove 6. The edge of the projection of the first side wall 10 in the first direction is outside the edge of the projection of the second side wall 11 in the first direction.

[0034] If the sample pressing plate 8 is directly placed on the sample tray 7 without restricting the movement of the sample pressing plate 8, the sample pressing plate 8 may slide relative to the sample supporting plate 7 during the movement of the moving platform 3. To avoid this situation, a pressing plate groove 9 for placing the sample pressing plate 8 is further provided on the side wall of the light-transmitting hole 5. The first side wall 10 of the pressing plate groove 9 can restrict the movement of the sample pressing plate 8 so that it does not slide relative to the sample supporting plate 7.

[0035] To facilitate the placement of the sample supporting plate 7 and the sample pressing plate 8 on the sample tray 1, the cross-sections of the pressing plate groove 9 and the supporting plate groove 6 are stepped. The size of the pressing plate groove 9 is larger than that of the supporting plate groove 6. The first direction is the vertical direction. The edge of the projection of the first side wall 10 in the first direction is outside the edge of the projection of the second side wall 11 in the first direction.

[0036] Further, to facilitate the taking and placing of the sample supporting plate 7 and the sample pressing plate 8, both the sample supporting plate 7 and the sample pressing plate 8 are circular. Correspondingly, both the pressing plate groove 9 and the supporting plate groove 6 are annular grooves. The diameter of the first side wall 10 is larger than that of the second side wall 11.

[0037] The sample supporting plate 7 and the sample pressing plate 8 can also be rectangular. Correspondingly, both the pressing plate groove 9 and the supporting plate groove 6 are also rectangular. The width and length of the first side wall 10 are both larger than the width and length of the second side wall 11. However, the rectangular sample supporting plate 7 and sample pressing plate 8 are a bit inconvenient to use. The user often needs to rotate the directions of the sample supporting plate 7 and the sample pressing plate 8 so that they can be placed in the rectangular pressing plate groove 9 and supporting plate groove 6. However, the circular sample supporting plate 7 and sample pressing plate 8 do not require this rotation process and are more convenient to use.

[0038] In this embodiment, different sample supporting plates 7 can be used to measure different samples. When measuring the particle size and particle shape of dry powder particles, the sample supporting plate 7 is a single-layer glass plate. As Figure 1 shown, one side of the sample supporting plate 7 close to the second surface 17 is a bearing surface, and the bearing surface is used to place the sample to be measured. The sample pressing plate 8 presses on the bearing surface.

[0039] When it is necessary to measure the particulate matter on the filter membrane, the sample tray 7 includes a first sample clamping plate and a second sample clamping plate (the first sample clamping plate and the second sample clamping plate are not shown in the figure) arranged oppositely, and the filter membrane is clamped between the first sample clamping plate and the second sample clamping plate. If the first sample clamping plate is placed vertically below the second sample clamping plate, the sample pressing plate 8 presses on one side of the second sample clamping plate close to the second surface 17. The first sample clamping plate and the second sample clamping plate are two thin glass plates, and their thickness is less than the thickness of a single glass plate.

[0040] Further, as Figure 2 shown, an installation groove 13 for placing the sample tray 1 is provided on the moving platform 3. The positions of the first magnetic member 2 and the second magnetic member 4 are preferably arranged oppositely. If the outer edge of the sample tray 1 is circular, when the sample tray 1 is placed on the moving platform 3, the position of the first magnetic member 2 may not be aligned with the position of the second magnetic member 4, and in this case, the sample tray 1 may rotate. To avoid this situation, an annular magnet can be provided on the circumference of the sample tray 1, but this method will increase the cost and weight of the sample tray. In this embodiment, another method is adopted, that is, the outer edge of the sample tray 1 is set as a polygon, and correspondingly, the installation groove 13 on the moving platform 3 is also set as a polygon capable of accommodating the sample tray 1. Then, a plurality of first magnetic members 2 are provided at the edge close to the sample tray 1. Similarly, a plurality of second magnetic members 4 are provided at the corresponding positions on the moving platform 3, so that it is easy to align the position of the first magnetic member 2 with the position of the second magnetic member 4 when placing the sample tray 1.

[0041] In addition, markers can also be provided on the sample tray 1 and the moving platform 3 to facilitate the alignment of the position of the first magnetic member 2 with the position of the second magnetic member 4. For example, a groove is provided on the edge of the sample tray 1, and a protrusion is provided on the moving platform 3. When the protrusion is accommodated in the groove, the sample tray 1 can be placed in the installation groove 13 on the moving platform 3. Based on the positions of the groove and the protrusion, the positions of the first magnetic member 2 and the second magnetic member 4 are set, so that the position of the first magnetic member 2 can always be aligned with the position of the second magnetic member 4.

[0042] The outer edge of the sample tray 1 can be a polygon of any shape, such as a triangle, a rectangle, a pentagon, etc. Considering that the sample tray 7 and the sample pressing plate 8 are circular, in order to minimize the area of the sample tray 1 and improve the space utilization rate, the outer edge of the sample tray 1 is preferably similar to a circle, such as a pentagon or a hexagon, etc. In this embodiment, the outer edge of the sample tray 1 is an octagon. In addition to reducing the area of the sample tray 1, it is also convenient to use. Since the number of sides is relatively large, when the user places the sample tray, only a small angle needs to be rotated to easily align the position of the first magnetic member 2 with the position of the second magnetic member 4.

[0043] A dry powder particle and filter membrane analyzer, such as Figure 5 shown, includes a moving platform 3 provided with a second magnetic member 4, a light source 21 and a camera assembly 22 respectively arranged on both sides of the moving platform 3, and further includes the above-mentioned tray assembly. The tray assembly is placed on the moving platform 3, and the moving platform 3 is used to move the tray assembly to the detection position. The light in the light source 21 passes through the tray assembly and then enters the camera assembly 22 for imaging.

[0044] As Figure 4 shown, an installation groove 13 is provided on the moving platform 3. A through hole 14 and a boss 15 are provided at the bottom of the installation groove 13. After the sample tray 1 is placed in the installation groove 13, the light-transmitting hole 5 is communicated with the through hole 14, and the light in the light source 21 passes through the through hole 14 and the light-transmitting hole 5 and shines on the sample tray 7; a second magnetic member 4 is arranged in the boss 15.

[0045] The installation groove 13 is a square groove. The inner wall of the installation groove 13 abuts against a part of the outer edge of the sample tray 1 in the horizontal direction, and the inner wall of the installation groove 13 can play a role in restricting the position of the sample tray 1. As Figure 5 shown, after the sample tray 1 is placed in the installation groove 13, the four edges of the installation groove 13 respectively abut against the sample tray 1 in the four horizontal directions of front, back, left and right, and further limit the sample tray 1 on the basis of magnetic attraction fixation.

[0046] A moving assembly 20 is arranged below the moving platform 3. The moving assembly 20 can be a cross slide. The moving assembly has a first slide in the width direction of the analyzer and a second slide in the length direction of the analyzer in the horizontal direction. The moving assembly 20 can drive the moving platform 3 to move to any position in the horizontal direction, so as to drive the tray assembly to the observation position.

[0047] It should be noted that although Figure 4 shows four bosses 15, this is not a limitation of the present invention. Without departing from the basic principle of the present invention, those skilled in the art can adopt other numbers of bosses 15, as long as the sample tray 1 can be supported and the second magnetic member 4 can be arranged.

[0048] In addition, Figure 4 the shape of the boss 15 shown is only for illustration and is not a limitation of the present invention. Without affecting the detection, the boss 15 can be of any shape.

[0049] 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.

[0050] 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 tray assembly, characterized in that: include: A sample tray (1), the sample tray (1) having a first surface (16) and a second surface (17) opposite to each other, the first surface (16) being used for contacting with a moving platform (3), the sample tray (1) being provided with a first magnetic member (2), the first magnetic member (2) being used for attracting a second magnetic member (4) on the moving platform (3), the sample tray (1) being further provided with a light-transmitting hole (5), and a support plate groove (6) being provided on a side wall of the light-transmitting hole (5); A sample support plate (7), the sample support plate (7) is placed in the support plate slot (6), and the sample support plate (7) is used to place a sample to be tested.

2. The tray assembly according to claim 1, characterized in that: The tray assembly further comprises: A sample pressing plate (8), wherein the sample pressing plate (8) is used to press on a side of the sample supporting plate (7) close to the second surface (17).

3. The tray assembly according to claim 2, characterized in that: A pressure plate groove (9) is also provided on the side wall of the light-transmitting hole (5). The pressure plate groove (9) is located on the side of the support plate groove (6) close to the second surface (17) and is used to accommodate the sample pressure plate (8). The pressure plate groove (9) has a first side wall (10), and the support plate groove (6) has a second side wall (11). The first side wall (10) and the second side wall (11) are connected by a step surface (12), and the edge of the projection of the first side wall (10) in the first direction is outside the edge of the projection of the second side wall (11) in the first direction.

4. The tray assembly according to claim 3, characterized in that: The pressure plate groove (9) and the support plate groove (6) are both annular grooves, and the diameter of the first side wall (10) is greater than the diameter of the second side wall (11).

5. The tray assembly according to claim 1, characterized in that: The sample support plate (7) is a single-layer glass plate.

6. The tray assembly according to claim 1, characterized in that: The sample support plate (7) comprises a first sample clamping plate and a second sample clamping plate which are arranged opposite to each other, and the first sample clamping plate and the second sample clamping plate are used to clamp the filter membrane.

7. The tray assembly according to claim 1, characterized in that: The outer edge of the sample tray (1) is polygonal.

8. The tray assembly according to claim 7, characterized in that: The outer edge of the sample tray (1) is octagonal.

9. A dry powder particle and filter membrane analyzer, characterized in that: It comprises a mobile platform (3) provided with a second magnetic member (4), and a light source (21) and a camera assembly (22) respectively arranged on both sides of the mobile platform (3), and also comprises a tray assembly according to any one of claims 1 to 8, wherein the tray assembly is placed on the mobile platform (3), and the mobile platform (3) is used to move the tray assembly to a detection position.

10. The dry powder particle and filter membrane analyzer according to claim 9, characterized in that: The movable platform (3) is provided with a mounting groove (13), the bottom of the mounting groove (13) is provided with a through hole (14) and a boss (15), after the sample tray (1) is placed in the mounting groove (13), the light-transmitting hole (5) is connected with the through hole (14), and the boss (15) is provided with the second magnetic member (4); and / or The mounting groove (13) is a square groove, and the inner wall of the mounting groove (13) abuts against a portion of the outer edge of the sample tray (1) in the horizontal direction.

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