A food solid phase extraction auxiliary device

Abstract

The utility model provides a kind of food solid phase extraction auxiliary device, it is related to food detection technical field, and the extraction component includes extraction head, regulating valve and extraction column, three are sequentially installed and communicated from bottom to top in order;Auxiliary device is installed on the bearing plate, and auxiliary device includes sleeve and inner piece, the inner piece is sleeved in sleeve, and damping structure is equipped between the inner piece and sleeve, and the inner piece and sleeve are movably connected, and the inner piece top end is equipped with the support platform supported in the bottom of extraction column;The outer end of the inner piece is equipped with the limiting piece connected with regulating valve;Even if the connecting area between extraction column and regulating valve is small, extraction column can be supported by extension and support platform, avoid the uneven distribution of sample in filler or sample pouring condition caused by inclination during solid phase extraction process.

Description

Technical Field

[0001] This utility model relates to the field of food testing technology, and more specifically, to an auxiliary device for solid-phase extraction of food. Background Technology

[0002] Food safety testing involves detecting harmful substances in food according to national standards, primarily focusing on harmful and toxic indicators. There are many methods for food testing, among which solid-phase extraction (SPE) is widely used in pharmaceuticals, food, environmental, commodity inspection, and chemical industries due to its simplicity and lack of specialized equipment. SPE is mainly used for sample separation, purification, and concentration. Compared to traditional liquid-liquid extraction, it can improve analyte recovery, more effectively separate analytes from interfering components, reduce sample pretreatment, and is simple to operate. SPE utilizes a solid adsorbent to adsorb the target compound from the liquid sample, separating it from the sample matrix and interfering compounds. Elution is then performed using an eluent or desorption by heating to achieve the separation and enrichment of the target compound.

[0003] Currently, during solid-phase extraction, the top of the regulating valve is inserted at the bottom outlet of the extraction column. The contact area between the two is small, and the outer diameter of the extraction column is much larger than the connection point, which can lead to instability. This is especially true when the liquid level inside the extraction column is high, making it more prone to tipping over. Furthermore, when the extraction column is removed after extraction, it is usually pulled out directly. The extraction column experiences significant vibration at the moment of being pulled out, and the packing layer is easily shaken and leaks, causing the sample liquid to spill out. Utility Model Content

[0004] The technical problem this invention aims to solve is that the extraction column is prone to instability when placed, and when the extraction column is pulled out, it is easily shaken and leaks liquid, causing the sample liquid to spill out. In response to the problems existing in the prior art, an auxiliary device for solid phase extraction of food is provided.

[0005] The purpose and effects of this utility model are achieved by the following specific technical means:

[0006] A food solid phase extraction auxiliary device includes a support plate and an extraction component. The support plate has several mounting holes, and the extraction component is installed in the mounting holes.

[0007] The extraction assembly includes an extraction head, a regulating valve, and an extraction column, which are installed sequentially from bottom to top and are interconnected.

[0008] An auxiliary device is installed on the support plate. The auxiliary device includes a kit and an inner component. The inner component is fitted inside the kit. A damping structure is provided between the inner component and the kit. The inner component and the kit are movably connected. A support platform supporting the bottom of the extraction column is provided at the top of the inner component.

[0009] The outer end of the internal component is provided with a limiting component that is connected to the regulating valve.

[0010] A further preferred embodiment: the extraction head, the regulating valve, and the extraction column are detachably installed together, and the extraction head is detachably installed from the mounting hole.

[0011] A further preferred embodiment: the kit and the support plate are detachably installed, and the kit has a conical groove, with a stepped blocking part at the top of the conical groove.

[0012] A further preferred embodiment: the bottom of the inner component is conical, and the outer diameter at the conical position increases from top to bottom;

[0013] The bottom of the inner component is located in the conical groove, and the outer wall of the inner component is in close contact with the inner wall of the conical groove. The conical groove of the kit and the bottom of the inner diameter form a damping structure.

[0014] A further preferred embodiment: the outer wall of the conical position of the inner component is provided with a stop, and the stop is convex, and the stop is connected to the blocking part.

[0015] A further preferred embodiment: the top of the inner component is provided with at least two extensions, and the extensions extend upward to the extraction column;

[0016] A support platform is installed on the side of the extension near the extraction column, and the support platform is located at the bottom of the extraction column, with the support platform contacting at least half of the area of ​​the bottom of the extraction column.

[0017] A further preferred embodiment: the spacing between the inner walls of the extensions is slightly smaller than the diameter of the extraction column, the inner walls of the extensions are tightly connected to the support platform, and the contact positions of the extensions, the support platform, and the extraction column are L-shaped.

[0018] A further preferred embodiment: the outer wall of the extension is fixed with a side ear.

[0019] A further preferred embodiment: the limiting member is concave in shape, and the limiting member is movably connected to the regulating valve.

[0020] The beneficial effects of this utility model are:

[0021] 1. The extension applies a clamping force to the extraction column, improving the tightness of the connection. The support platform supports the bottom of the extraction column. The extension and the support platform support the extraction column in an L-shape, supporting both the bottom and the sides, resulting in high stability. Even if the connection area between the extraction column and the regulating valve is small, the extension and the support platform can still support the extraction column, preventing tilting during solid-phase extraction that could lead to uneven sample distribution in the packing or sample tipping.

[0022] 2. Hook the bottom of the side ear and pull it upwards. The inner part will move upwards simultaneously. The inner part moves upwards in the conical groove. When the inner part moves up to a height of about 1.5cm, the outer wall of the inner part will make close contact with the inner wall of the conical groove, forming a damping sensation. Use the inner part to pull out the extraction column. This is more stable than pulling out the extraction column directly, reducing the vibration of the extraction column and preventing the sample liquid from being thrown out. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] Figure 1 This is a schematic diagram of the support plate structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the installation of the support plate and extraction head structure of this utility model;

[0026] Figure 3 This is a schematic diagram showing the installation of the support plate and extraction component of this utility model;

[0027] Figure 4 This is a schematic diagram of the overall structure of this utility model;

[0028] Figure 5 This is a schematic diagram of the extraction component, kit, and internal structure installation of this utility model;

[0029] Figure 6 This is a schematic diagram showing the disassembled structure of the kit and its internal components of this utility model;

[0030] Figure 7 This is a schematic diagram of the limiting component structure of this utility model;

[0031] Figure 8 This utility model Figure 4 A partial structural plan view;

[0032] Figure 9 This utility model Figure 8 A magnified schematic diagram of the structure at point A;

[0033] Figure 10 This utility model Figure 8 A magnified schematic diagram of the structure at point A (with the internal components moved upwards).

[0034] Figures 1-10 In the middle: support plate (1), mounting hole (101), extraction head (2), regulating valve (3), extraction column (4), kit (5), blocking part (501), inner part (6), extension part (601), support platform (602), side ear part (7), limiting part (8), stop part (9). Detailed Implementation

[0035] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. The following embodiments are merely examples for implementing this utility model. It must be pointed out that the disclosed embodiments do not limit the scope of this utility model. On the contrary, any modifications and refinements made without departing from the scope of this utility model are within the patent protection scope of this utility model.

[0036] Please see the appendix Figure 1 -Appendix Figure 3 A food solid-phase extraction auxiliary device includes a support plate 1 and an extraction component. The support plate 1 is a top support structure of a test tube holder, and the specifications of the support plate 1 match the specifications of the test tube holder. The extraction component includes an extraction head 2, a regulating valve 3, and an extraction column 4. In use, the three components are installed in sequence from bottom to top. After installation, the three components are internally connected. The support plate 1 has several installation holes 101. The extraction head 2 is then inserted into the installation holes 101, and the extraction component is then inserted into the installation holes 101. Thus, the extraction component and the support plate 1 are installed.

[0037] Please see the appendix Figure 4 -Appendix Figure 6 An auxiliary device is installed on the support plate 1. The auxiliary device includes a kit 5 and an inner component 6. The kit 5 is detachably installed on the support plate 1. The connection between the kit 5 and the support plate 1 can be a threaded connection. The kit 5 is located outside the extraction head 2, and the inner component 6 is located between the kit 5 and the extraction head 2. (See attached...) Figure 5 and attached Figure 6 The inner component 6 has an extension 601 at its top, which extends upward to the extraction column 4. A support platform 602 is installed on the side of the extension 601 near the extraction column 4. The support platform 602 is located at the bottom of the extraction column 4. When the extraction column 4 is inserted into the top of the regulating valve 3, the bottom of the extraction column 4 will correspond to the support platform 602. The spacing between the inner walls of the extensions 601 is slightly smaller than the diameter of the extraction column 4. The extensions 601 are preferably made of plastic and have deformation capability. The extensions 601 can be adjusted to be slightly enlarged. The extraction column 4 moves down into the space between the extensions 601. The extensions 601 will apply a clamping force to the extraction column 4 to improve the tightness of the connection. The support platform 602 supports the bottom of the extraction column 4. The extensions 601 and the support platform 602 support the extraction column 4. The support position is L-shaped, supporting both the bottom and the side, resulting in high stability.

[0038] Further details are attached. Figure 5The bottom of the extraction column 4 is preferably arc-shaped, and the support platform 602 has the same shape as the bottom of the extraction column 4. The support platform 602 contacts at least half of the bottom area of ​​the extraction column 4. The arc-shaped design can increase the contact area and improve the support stability. In this way, even if the connection area between the extraction column 4 and the regulating valve 3 is small, the extraction column 4 can still be supported by the extension 601 and the support platform 602, avoiding the situation where the sample is unevenly distributed in the packing or the sample is tilted during the solid phase extraction process.

[0039] Preferably, in order to ensure that the extraction column 4 can be supported at multiple angles, the number of extensions 601 is at least two. When the number of extensions 601 is two, they are arranged symmetrically, which can stably support both sides of the extraction column 4.

[0040] As attached Figure 4 -Appendix Figure 7 The inner part 6 has a limiting part 8 connected to the regulating valve 3 at its outer end. The limiting part 8 is concave and corresponds exactly to the protruding position at the outer end of the regulating valve 3. The protruding position of the regulating valve 3 is connected to the concave part of the limiting part 8. This design can prevent the inner part 6 from rotating, thereby preventing the extraction column 4 from rotating.

[0041] As attached Figure 5 -Appendix Figure 10 As shown, a side ear 7 is fixed to the outer wall of the extension 601. After the sample liquid in the extraction column 4 has finished dripping, the extraction column 4 can be pulled out through the side ear 7. Two fingers hook the bottom of the side ear 7 and pull it upwards. The inner part 6 will move upwards simultaneously. The kit 5 has a conical groove, and the bottom of the inner part 6 is also conical. The bottom of the inner part 6 is located in the conical groove, and the two fit each other. The outer diameter of the inner part 6 at the conical position expands from top to bottom, and is thinner at the top and thicker at the bottom. The conical groove of the kit 5 and the bottom of the inner diameter form a damping structure. The inner part 6 moves upwards in the conical groove (as shown in the attached figure). Figure 10 (As shown) When the inner part 6 moves up about 1.5cm, the outer wall of the inner part 6 comes into close contact with the inner wall of the conical groove, forming a damping sensation. The extraction column 4 is pulled out using the inner part 6, which is more stable than pulling out the extraction column 4 directly, reducing the vibration experienced by the extraction column 4 and preventing the sample liquid from being thrown out.

[0042] The height of the damping sensation generated by the upward movement of inner component 6 can be designed according to actual usage requirements.

[0043] Furthermore, a stepped blocking part 501 is provided at the top of the conical groove, and a stop 9 is provided on the outer wall of the conical position of the inner part 6. When the inner part 6 moves up to a certain position, the outwardly convex stop 9 will be blocked by the blocking part 501, that is, the inner part 6 is restricted from moving up further, which can prevent the inner part 6 from falling off the kit 5.

[0044] Furthermore, as the inner part 6 moves upward, the limiting part 8 also moves upward and disengages from the regulating valve 3, so the inner part 6 can be rotated. Rotation is more conducive to the extraction column 4 disengaging from the regulating valve 3, so the extraction column 4 can be removed by rotation.

[0045] In this embodiment, the extension applies a clamping force to the extraction column, improving the tightness of the connection. The support platform supports the bottom of the extraction column. The extension and the support platform support the extraction column in an L-shape, supporting both the bottom and the sides, resulting in high stability. Even if the connection area between the extraction column and the regulating valve is small, the extension and the support platform can still support the extraction column, preventing tilting during solid-phase extraction that could lead to uneven sample distribution in the packing material or sample tipping. Hooking the bottom of the side ear and pulling it upwards causes the inner part to move upwards simultaneously. The inner part moves upwards in the conical groove. When the inner part moves up to a height of about 1.5cm, the outer wall of the inner part comes into close contact with the inner wall of the conical groove, creating a damping sensation. Using the inner part to pull out the extraction column is more stable than pulling out the extraction column directly, reducing the vibration experienced by the extraction column and preventing the sample liquid from being thrown out.

[0046] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model. Therefore, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

Claims

1. A food solid-phase extraction auxiliary device, comprising a support plate and an extraction assembly, wherein the support plate has a plurality of mounting holes, and the extraction assembly is installed in the mounting holes, characterized in that: The extraction assembly includes an extraction head, a regulating valve, and an extraction column, which are installed sequentially from bottom to top and are interconnected. An auxiliary device is installed on the support plate. The auxiliary device includes a kit and an inner component. The inner component is fitted inside the kit. A damping structure is provided between the inner component and the kit. The inner component and the kit are movably connected. A support platform supporting the bottom of the extraction column is provided at the top of the inner component. The outer end of the internal component is provided with a limiting component that is connected to the regulating valve.

2. The food solid-phase extraction auxiliary device according to claim 1, characterized in that: The extraction head, regulating valve, and extraction column are detachably installed together, and the extraction head is also detachably installed from the mounting hole.

3. The food solid-phase extraction auxiliary device according to claim 1, characterized in that: The kit and the support plate are detachable and can be installed separately. The kit has a conical groove inside, and the top of the conical groove has a stepped blocking part.

4. The food solid-phase extraction auxiliary device according to claim 3, characterized in that: The bottom of the inner component is conical, and the outer diameter at the conical position increases from top to bottom; The bottom of the inner component is located in the conical groove, and the outer wall of the inner component is in close contact with the inner wall of the conical groove. The conical groove of the kit and the bottom of the inner diameter form a damping structure.

5. The food solid-phase extraction auxiliary device according to claim 4, characterized in that: The outer wall of the conical position of the inner component is provided with a stop, and the stop is convex. The stop is connected to the blocking part.

6. The food solid-phase extraction auxiliary device according to claim 1, characterized in that: The top of the inner component is provided with at least two extensions, and the extensions extend upward to the extraction column; A support platform is installed on the side of the extension near the extraction column, and the support platform is located at the bottom of the extraction column, with the support platform contacting at least half of the area of ​​the bottom of the extraction column.

7. The food solid-phase extraction auxiliary device according to claim 6, characterized in that: The spacing between the inner walls of the extensions is slightly smaller than the diameter of the extraction column. The inner walls of the extensions are tightly connected to the support platform, and the contact positions of the extensions, the support platform, and the extraction column are L-shaped.

8. The food solid-phase extraction auxiliary device according to claim 6, characterized in that: The outer wall of the extension is fixed with a side ear.

9. The food solid-phase extraction auxiliary device according to any one of claims 1 to 8, characterized in that: The limiting member is concave in shape and is movably connected to the regulating valve.

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