Thin film diffusion gradient sampling device

Abstract

The utility model belongs to the technical field of thin film diffusion gradient, and particularly relates to a thin film diffusion gradient sampling device. The device comprises an enrichment box body and a cover body, the enrichment box body is a cylinder with an upper opening, the cover body is provided with a diffusion window, the cover body is tightly buckled with the enrichment box body, the enrichment box body comprises a cylinder and a bottom plate, and the bottom plate is connected with the cylinder through threads. According to the improved scheme, the bottom plate comprises an inner plug and an outer cap sleeve, the inner plug is in close fit with the inner cavity of the cylinder of the enrichment box body, and an inner thread of the outer cap sleeve is matched with an outer thread of the outer wall of the cylinder of the enrichment box body. The depth of the inner cavity of the enrichment box body can be adjusted by adjusting the position of the bottom plate, so that the enrichment box is suitable for filling diffusion layers and enrichment material layers with different thicknesses.

Description

Technical Field

[0001] This invention belongs to the field of thin film diffusion gradient technology, specifically relating to a thin film diffusion gradient sampling device. Background Technology

[0002] Diffusion gradient technique (DGT) refers to the technique of in-situ collection and quantitative determination of ion diffusion flux or ion concentration in a medium. This method is based on Fick's first law of diffusion, and obtains the concentration value of a certain ion by quantitatively measuring and calculating the amount of a certain ion that passes through a diffusion membrane of a certain thickness within a specific time.

[0003] Thin-film diffusion gradient sampling devices mainly consist of a sealed container with a diffusion window, a diffusion layer, enriched material, and other auxiliary components. Ions diffuse through the diffusion window and through the diffusion layer, where they are captured and collected by the enriched material. Depending on the element being measured and the specific research and development requirements, the required thickness of the diffusion layer and the amount of enriched material vary, necessitating thin-film diffusion gradient sampling devices of different volumes.

[0004] To facilitate the above operations, this invention provides an adjustable thin-film diffusion gradient sampling device. Utility Model Content

[0005] The purpose of this invention is to provide a thin film diffusion gradient sampling device, which can adjust the depth of the inner cavity of the enrichment box according to the requirements, thereby achieving the filling of diffusion layers of different thicknesses and enrichment of materials.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A thin-film diffusion gradient sampling device includes an enrichment box 1 and a cover 2. The enrichment box 1 is a cylinder with an open top, and the cover 2 is provided with a diffusion window 21. The cover 2 and the enrichment box 1 are tightly fastened together. The enrichment box 1 includes a cylindrical tube 11 and a bottom plate 12. The bottom plate 12 and the cylindrical tube 11 are connected by threads.

[0008] Preferably, the outer wall of the cylindrical tube 11 of the enrichment box body 1 is provided with external threads, and the bottom plate 12 includes an inner plug 121 and an outer cap 122. The outer cap 122 is provided with internal threads, the inner plug 121 is tightly fitted with the inner cavity of the cylindrical tube 11 of the enrichment box body 1, and the internal thread of the outer cap 122 is engaged with the external thread of the outer wall of the cylindrical tube 11 of the enrichment box body 1.

[0009] Preferably, the cylindrical tube 11 of the enrichment box 1 is provided with a locking block 14 on both sides of its outer wall, and the locking block 14 is provided with a plug 15 at its top; the bottom of the cover 2 is provided with a locking groove 22 on both sides, the locking groove 22 is open at the bottom, and the locking groove 22 is provided with a plug hole 23 at its top. The locking block 14 cooperates with the locking groove 22, and the plug 15 cooperates with the plug hole 23.

[0010] Preferably, an "L"-shaped positioning groove 13 is provided on the upper part of the outer wall of the cylindrical tube 11 of the enrichment box body 1, and the two "L"-shaped positioning grooves 13 are arranged opposite each other with the opening of the "L"-shaped positioning groove 13 facing upward.

[0011] Preferably, it is also equipped with a rotating device 3, which includes an upper body 31 and a lower body 32, which are integrally formed. The upper body is provided with a rotating handle 34 on the outside. The lower body 32 is a hollow cylinder with a lower opening. The inner hollow diameter of the lower body 32 matches the outer wall diameter of the cylindrical tube of the enrichment box 1. The lower body 32 is provided with a stop block 33 inside. The width of the stop block 33 is smaller than the upper opening width of the "L"-shaped positioning groove 12.

[0012] Preferably, the bottom of the base plate 12 is provided with a regular hexagonal groove 123.

[0013] Preferably, it is also equipped with a balance base 4, and a balance positioning block 41 is provided above the balance base 4. The end face of the balance positioning block 41 is a regular hexagon, and the end face of the balance positioning block 41 cooperates with the regular hexagonal groove 123 at the bottom of the base plate 12.

[0014] Preferably, the inner wall of the regular hexagonal groove 123 is provided with a horizontal insertion hole 124, and the two horizontal insertion holes 124 are arranged opposite to each other.

[0015] This invention provides a thin-film diffusion gradient sampling device, which has the following advantages:

[0016] (1) The enrichment box 1 includes a cylindrical tube 11 and a bottom plate 12. The bottom plate 12 and the cylindrical tube 11 are connected by threads. By adjusting the position of the bottom plate 12, the depth of the inner cavity of the enrichment box 1 can be adjusted, so as to fill diffusion layers and enrichment material layers of different thicknesses.

[0017] (2) The outer wall of the cylindrical tube of the enrichment box 1 is provided with external threads. The bottom plate 12 includes an inner plug 121 and an outer cap 122. The outer cap 122 is provided with internal threads. The outer wall of the inner plug 121 is in close contact with the inner wall of the cylindrical tube of the enrichment box 1, which makes it easier to keep the bottom plate 12 and the cylindrical tube 11 in balance. The internal thread of the outer cap 122 is engaged with the external thread of the outer wall of the cylindrical tube of the enrichment box 1, which prevents the bottom plate 12 from being misaligned during adjustment, and prevents the bottom plate 12 and the cylindrical tube 11 from having gaps and leaking.

[0018] (3) The cylindrical outer wall of the enrichment box 1 is provided with a locking block 14 on both sides and a pin 15 on the top of the locking block 14; the bottom of the cover 2 is provided with a slot 22 on both sides, the slot 22 is open at the bottom and the top of the slot 22 is provided with a hole 23. When the cover 2 is fastened to the outside of the enrichment box 1, the locking block 14 locks the slot 22 and the pin 15 is inserted into the hole 23. The cover 2 and the enrichment box 1 are doubly locked by the locking block 14 and the slot 22, and the pin 15 and the hole 23, ensuring that the cover 2 and the enrichment box 1 are tightly fastened.

[0019] (4) An "L"-shaped positioning groove 13 is provided on the upper part of the outer wall of the cylindrical tube of the enrichment box 1, and a regular hexagonal groove 123 is provided on the bottom of the base plate 12. With the cooperation of the rotating device 3 and the balance base 4, the base plate 12 is fixed during the rotation, ensuring that the cylindrical tube 11 of the enrichment box 1 is rotated evenly, thereby ensuring that the base plate 12 and the cylindrical tube 11 remain balanced, avoiding misalignment of the base plate 12 during the adjustment process, and preventing gaps between the base plate 12 and the cylindrical tube 11 from causing leakage. Attached Figure Description

[0020] Figure 1 This is a front view of the cover as described in Specific Embodiment 1;

[0021] Figure 2 This is a top view of the cover body described in Specific Embodiment 1;

[0022] Figure 3 This is a front view of the enrichment box described in Specific Embodiment 1;

[0023] Figure 4 This is a top view of the enrichment box described in Specific Embodiment 1;

[0024] Figure 5 This is a front view of the cover and enrichment box body after they are fastened together, as described in Specific Embodiment 1.

[0025] Figure 6 This is a front view of the enrichment box described in Specific Embodiment 2;

[0026] Figure 7 This is a top view of the enrichment box described in Specific Embodiment 2;

[0027] Figure 8 This is a front view of the rotating device described in Specific Embodiment 2;

[0028] Figure 9 This is a top view of the rotating device described in Specific Embodiment 2;

[0029] Figure 10 This is a front view of the balancing base described in Specific Embodiment Two;

[0030] Figure 11 This is a top view of the balancing base described in Specific Embodiment Two;

[0031] Figure 12 This is a front view of the hook described in Specific Embodiment Two;

[0032] Figure 13 This is a front view of the enrichment box described in Specific Embodiment 3;

[0033] Figure 14 This is a top view of the enrichment box described in Specific Embodiment 3;

[0034] Figure 15 This is a front view of the cover body described in Specific Embodiment Three;

[0035] Figure 16 This is a top view of the cover body described in Specific Embodiment 3;

[0036] Figure 17 This is a front view of the base plate described in Specific Embodiment Four;

[0037] Figure 18 This is a top view of the base plate described in Specific Embodiment Four;

[0038] Figure 19 This is a front view of the enrichment box described in Specific Embodiment 4;

[0039] Figure 20 This is a front view of the cover and enrichment box body after they are fastened together, as described in Specific Embodiment 5;

[0040] Figure 21 This is a front view of the pressure bar described in Specific Embodiment Two;

[0041] Figure 22 This is a top view of the pressure bar described in Specific Embodiment Two;

[0042] In the diagram: enrichment box-1, cylindrical tube-11, base plate-12, inner plug-121, outer cap-122, regular hexagonal groove-123, horizontal insertion hole-124, "L" shaped positioning groove-13, locking block-14, insertion post-15, cover-2, diffusion window-21, slot-22, insertion hole-23, upper body-31, lower body-32, stop block-33, rotating handle-34, balance bracket-4, balance positioning block-41. Detailed Implementation

[0043] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings. Specific Implementation Example 1:

[0045] Thin film diffusion gradient sampling device, see instruction manual appendix. Figure 5 As shown, it includes an enrichment box body 1 and a cover body 2, with the cover body 2 tightly fastened to the enrichment box body 1. See the attached instruction manual. Figure 3 and Figure 4 As shown, the enrichment box 1 is an open-top cylinder, and its interior is used to fill the enrichment material, diffusion layer, and filter layer. (See attached specification.) Figure 1 and Figure 2 As shown, the cover 2 is provided with a diffusion window 21. The inner diameter of the diffusion window 21 is the same as the inner diameter of the cylindrical wall of the enrichment box 1. Ions in the material to be detected diffuse through the diffusion window 21 through the filter layer and the diffusion layer, and are captured and enriched by the enriched material. In order to be suitable for diffusion layers and enriched material layers of different thicknesses, it is necessary to adjust the depth of the inner cavity of the enrichment box 1. The following technical solution is adopted: the enrichment box 1 includes a cylindrical tube 11 and a bottom plate 12. The inner wall of the cylindrical tube 11 is provided with internal threads, and the side of the bottom plate 12 is provided with external threads. The bottom plate 12 and the cylindrical tube 11 are connected by threads. In this specific embodiment, by adjusting the position of the bottom plate 12, the depth of the inner cavity of the enrichment box 1 can be adjusted, thereby making it suitable for filling diffusion layers and enriched material layers of different thicknesses. Specific Implementation Example 2:

[0047] To ensure that the base plate 12 remains balanced during adjustment, a rotating device 3 and a balancing base 4 can be used in conjunction with the adjustment process.

[0048] To accommodate the rotating device 3 and the balancing base 4, the structure of the thin-film diffusion gradient sampling device described in Specific Embodiment 1 has been improved. See the appendix to the specification. Figure 6 and Figure 7 As shown, the upper part of the cylindrical outer wall of the enrichment box 1 is provided with an "L"-shaped positioning groove 13, and the two "L"-shaped positioning grooves 13 are arranged opposite each other with the opening of the "L"-shaped positioning grooves 13 facing upward. The bottom of the base plate 12 is provided with a regular hexagonal groove 123.

[0049] See the attached instruction manual. Figure 8 and Figure 9 The rotating device 3 shown includes an upper body 31 and a lower body 32. The upper body is provided with a rotating handle 34 on its outer side. The lower body 32 is a hollow cylinder with an opening at the bottom. The upper body 31 and the lower body 32 are integrally formed. The inner hollow diameter of the lower body 32 matches the outer diameter of the cylindrical wall of the enrichment box 1. The lower body 32 is provided with a stop block 33 inside. The width of the stop block 33 is smaller than the upper opening width of the "L"-shaped positioning groove 12.

[0050] See the attached instruction manual. Figure 10 and Figure 11 The balance base 4 shown has a balance positioning block 41 on its upper part. The end face of the balance positioning block 41 is a regular hexagon and it engages with the regular hexagonal groove 123 at the bottom of the base plate 12.

[0051] The specific operation process for this particular embodiment is as follows:

[0052] (1) The balance base 4 is placed on the workbench with the balance positioning block 41 facing upward;

[0053] (2) The regular hexagonal groove 123 at the bottom of the base plate 12 of the enrichment box 1 is placed on the balance positioning block 41. The balance base 4 fixes the base plate 12 of the enrichment box 1 to prevent it from rotating and maintains its balance.

[0054] (3) The stop block 33 of the rotating device 3 corresponds to the "L"-shaped positioning groove 12 on the upper part of the cylindrical outer wall of the enrichment box 1. The stop block 33 is inserted into the bottom of the "L"-shaped positioning groove 12. When the rotating handle is rotated, the rotating handle drives the cylindrical tube 11 of the enrichment box 1 to rotate together. The rotating handle increases the torque and facilitates rotation. With the cooperation of the lower body 32 of the rotating device 3, it is ensured that the cylindrical tube 11 of the enrichment box 1 rotates evenly, thereby ensuring that the bottom plate 12 and the cylindrical tube 11 remain balanced, avoiding misalignment of the bottom plate 12 during adjustment, and preventing gaps between the bottom plate 12 and the cylindrical tube 11 that could lead to leakage.

[0055] (4) When rotating the rotating device 3, a pressure rod 5 can be used. See the instruction manual appendix. Figure 21 and Figure 22 As shown, the pressure bar includes a straight rod 51 and a circular pressure plate 52. The bottom of the straight rod 51 is provided with a circular pressure plate 52. The straight rod 51 and the circular pressure plate 52 extend into the cylindrical tube of the enrichment box 1 through the central hole at the top of the upper body 31 of the rotating device. The circular pressure plate presses against the top of the bottom plate 12. The bottom of the bottom plate 12 is positioned by the balance positioning block 41 of the balance base 4 to ensure that the bottom plate 12 remains balanced and stationary during the rotation of the cylindrical tube 11 of the enrichment box 1.

[0056] (5) After the cover 2 and the enrichment box 1 are fastened together, in order to facilitate the disassembly of the cover 2 and the enrichment box 1, the following technical solution is adopted: the inner wall of the regular hexagonal groove 123 is provided with a transverse insertion hole 124, and the two transverse insertion holes 124 are arranged opposite to each other. The hook 5 shown in the attached figure of the instruction manual is used. The two outer ends of the hook 5 are inserted into the transverse insertion holes 124. With the cover 2 still, the enrichment box 1 is pulled down with the hook 5 to disassemble the cover 2 and the enrichment box 1. Then the filter layer, diffusion layer and enriched material are taken out from the enrichment box 1. Specific Implementation Example 3:

[0058] For specific embodiments one and two, in order to strengthen the tight fit between the cover 2 and the enrichment box 1, the following technical solutions are adopted:

[0059] See the attached instruction manual. Figure 13 and Figure 14As shown, the cylindrical outer wall of the enrichment box 1 is provided with locking blocks 14 on both sides. The locking blocks 14 are located at the bottom of the enrichment box 1, and the top of the locking blocks 14 is provided with insert posts 15. (See attached instruction manual) Figure 15 and Figure 16 As shown, the bottom of the cover 2 has slots 22 on both sides, with openings at the bottom and insertion holes 23 at the top. A locking block 14 engages with the slots 22, and a pin 15 engages with the insertion holes 23. When the cover 2 is fastened onto the outside of the enrichment box 1, the locking block 14 engages with the slots 22, and the pin 15 is inserted into the insertion holes 23. The cover 2 and the enrichment box 1 are doubly locked by the locking block 14 and the slots 22, and by the pin 15 and the insertion holes 23, ensuring a tight fit between the cover 2 and the enrichment box 1. Specific Implementation Example 4:

[0061] Based on Specific Embodiment 1, the thin film diffusion gradient sampling device is further improved as follows:

[0062] See the attached instruction manual. Figure 17 and Figure 18 As shown, the outer wall of the cylindrical tube of the enrichment box 1 is provided with external threads, and the bottom plate 12 includes an inner plug 121 and an outer cap 122. The outer cap 122 is provided with internal threads. The inner plug 121 is tightly fitted with the inner cavity of the cylindrical tube of the enrichment box 1, and the internal thread of the outer cap 122 is engaged with the external thread of the outer wall of the cylindrical tube of the enrichment box 1.

[0063] The thin-film diffusion gradient sampling device described in this specific embodiment is described in the appendix to the instruction manual. Figure 19 As shown, the inner plug 121 of the base plate 12 extends into the lower part of the cylindrical cavity of the enrichment box 1. The outer wall of the inner plug 121 fits tightly with the inner wall of the cylindrical cavity of the enrichment box 1, which makes it easier to keep the base plate 12 and the cylindrical cavity 11 in balance. In addition, the inner thread of the outer cap 122 matches the outer thread of the outer wall of the cylindrical cavity of the enrichment box 1, which prevents the base plate 12 from being misaligned during adjustment, and prevents gaps from forming between the base plate 12 and the cylindrical cavity 11, resulting in leakage. Specific Implementation Example 5:

[0065] For specific embodiment four, in order to strengthen the tight fit between the cover 2 and the enrichment box 1, the following technical solution is adopted:

[0066] See the attached instruction manual. Figure 20 As shown, the enrichment box 1 has locking blocks 14 on both sides, located in the middle of the outer wall of the cylindrical tube of the enrichment box 1. The cover 2 has slots 22 on both sides of its bottom, with openings at the bottom and insertion holes at the top. The locking blocks engage with the slots, and the insertion pin engages with the insertion holes. When the cover 2 is fastened to the outside of the enrichment box 1, the locking blocks engage with the slots, and the insertion pin is inserted into the insertion holes. The cover 2 and the enrichment box 1 are doubly locked by the locking blocks and slots, and by the insertion pin and insertion holes, resulting in a tight fit between the cover 2 and the enrichment box 1.

[0067] The thin-film diffusion gradient sampling device described in Specific Embodiments 1 to 5 is made of polyethylene, and the cover 2 and enrichment box 1 are respectively manufactured by a one-time molding process.

[0068] The above are merely illustrative embodiments of this utility model and are not intended to limit the scope of this utility model. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of this utility model should fall within the protection scope of this utility model. Furthermore, it should be noted that the components of this utility model are not limited to the overall application described above. Each technical feature described in the specification can be used individually or in combination as needed. Therefore, this utility model naturally covers other combinations and specific applications related to the points of this utility model.

Claims

1. A thin-film diffusion gradient sampling device, comprising an enrichment box (1) and a cover (2), wherein the enrichment box (1) is an open-top cylinder, the cover (2) is provided with a diffusion window (21), and the cover (2) is tightly fastened to the enrichment box (1), characterized in that, The enrichment box (1) includes a cylindrical tube (11) and a bottom plate (12), and the bottom plate (12) and the cylindrical tube (11) are connected by threads.

2. The thin film diffusion gradient sampling device of claim 1, wherein, The outer wall of the cylindrical tube (11) of the enrichment box (1) is provided with external threads. The bottom plate (12) includes an inner plug (121) and an outer cap (122). The outer cap (122) is provided with internal threads. The inner plug (121) is tightly fitted with the inner cavity of the cylindrical tube (11) of the enrichment box (1). The internal thread of the outer cap (122) is engaged with the external thread of the outer wall of the cylindrical tube (11) of the enrichment box (1).

3. The thin-film diffusion gradient sampling device of claim 1 or 2, wherein, The enrichment box (1) has a locking block (14) on both sides of the outer wall of the cylindrical tube (11), and a plug (15) is provided on the top of the locking block (14); the cover (2) has a locking groove (22) on both sides of the bottom, the locking groove (22) has an opening at the bottom, and a plug hole (23) is provided on the top of the locking groove (22). The locking block (14) cooperates with the locking groove (22), and the plug (15) cooperates with the plug hole (23).

4. The thin film diffusion gradient sampling device of claim 3, wherein, The enrichment box (1) has an "L"-shaped positioning groove (13) on the upper part of the outer wall of the cylindrical tube (11). The two "L"-shaped positioning grooves (13) are arranged opposite each other, and the opening of the "L"-shaped positioning groove (13) faces upward.

5. The thin film diffusion gradient sampling device of claim 4, wherein, It is also equipped with a rotating device (3), which includes an upper body (31) and a lower body (32). The upper body (31) and the lower body (32) are integrally set. The upper body (31) has a rotating handle (34) on its outer side. The lower body (32) is a hollow cylinder with a bottom opening. The inner hollow diameter of the lower body (32) matches the outer wall diameter of the cylindrical tube (11) of the enrichment box (1). The lower body (32) has a stop block (33) inside. The width of the stop block (33) is smaller than the upper opening width of the "L"-shaped positioning groove (13).

6. The thin film diffusion gradient sampling device of claim 4, wherein, The bottom of the base plate (12) is provided with a regular hexagonal groove (123).

7. The thin film diffusion gradient sampling device of claim 6, wherein, It is also equipped with a balance base (4), and a balance positioning block (41) is provided above the balance base (4). The end face of the balance positioning block (41) is a regular hexagon, and the end face of the balance positioning block (41) cooperates with the regular hexagonal groove (123) at the bottom of the base plate (12).

8. The thin film diffusion gradient sampling device of claim 7, wherein, The inner wall of the regular hexagonal groove (123) is provided with a horizontal insertion hole (124), and the two horizontal insertion holes (124) are arranged opposite to each other.

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