A solid phase extraction column device for food testing laboratories

Abstract

The utility model relates to food detection technical field especially a kind of solid phase extraction column device for food detection laboratory.The third slot of activation column is connected with the first clamping block by being inserted into the inside of filler column, at this time, the first film breaking block penetrates the first easy-to-tear membrane, then rotates the activation column, so that the first film breaking block rotates along the circumference of the first easy-to-tear membrane to cut the first easy-to-tear membrane, so that the activation liquid enters the inside of filler column, after activation is completed, by separating the sealing plug from the sample column, the sample liquid is dropped into the inside of filler column through the sample column, after sample loading is completed, press down the leaching column, the connecting block drives the second clamping block and the second connecting slot to be connected, at this time, the second film breaking block penetrates the second easy-to-tear membrane, then rotates the leaching column less than a circle, so that the leaching liquid enters the inside of filler column, after leaching is completed, the eluent is dropped into the inside of filler column through the sample column, by this way, the pollution and loss in solvent transfer process are avoided.

Description

Technical Field

[0001] This utility model relates to the field of food testing technology, specifically a solid phase extraction column device for food testing laboratories. Background Technology

[0002] Solid phase extraction columns are sample pretreatment devices developed from chromatography columns, used for extraction, separation, and concentration.

[0003] The existing solid-phase extraction (SPE) column procedures involve activation, sample loading, rinsing, and elution. However, this process requires personnel to add different solvents sequentially using pipettes. During solvent transfer, solvents can spill into the external space, potentially causing contamination and loss. Furthermore, in food safety screening where batches of samples need to be analyzed, each SPE column requires numerous steps, making it difficult for personnel to visually understand which step each column is currently in, which can negatively impact sample analysis. Utility Model Content

[0004] The purpose of this invention is to solve the problems mentioned in the background art by providing a solid phase extraction column device for food testing laboratories.

[0005] To achieve the above objectives, this utility model provides the following technical solution: Design a solid phase extraction column device for a food testing laboratory, including a packed column, an activation column, a sample loading column, and an elution column; An activation column is disposed above the packing column, an elution column is disposed above the activation column, and a sample loading column is fixedly disposed in the middle of the elution column.

[0006] Preferably, the upper end of the sample loading column is provided with a removable sealing plug, and the middle part of the sample loading column is provided with a connecting platform, the lower end face of which is flush with the open end of the elution column.

[0007] Preferably, connecting blocks are provided on both sides of the rinsing column, a second locking block is provided on the inner side of the connecting block, a second easy-tear film is provided at the open end of the rinsing column, and the other side of the second easy-tear film is bonded to the connecting platform.

[0008] Preferably, a third slot is provided below the activation column, a first slot is provided on the upper side of the activation column, a second slot is provided on the side of the activation column adjacent to the first slot, and a second membrane breaking block is provided on the upper part of the inner wall of the activation column.

[0009] Preferably, the first card slot and the second card slot have the same shape, and the first card slot and the second card slot are annular grooves, the second card slot is annular groove, and the second card slot and the first card slot can respectively engage with the second card block; When the first card slot is connected to the second card block, the second film-breaking block and the second easy-tear film have a first gap; When the second slot is connected to the second block, the second tearing block penetrates the second easy-tear film.

[0010] Preferably, a first locking block is provided above the interior of the packing column, and a first membrane-breaking block is provided on the side of the packing column adjacent to the first locking block.

[0011] Preferably, the first card block can engage with the third card slot, and when the first card block is connected to the third card slot, the first film-breaking block can penetrate the first easy-tear film.

[0012] This invention proposes a solid-phase extraction column device for a food testing laboratory. The advantages are as follows: An activation column is inserted into the packing column, with its third slot connected to the first locking block. At this point, the first membrane-breaking block penetrates the first easy-tear membrane. The activation column is then rotated, causing the first membrane-breaking block to rotate along the circumference of the first easy-tear membrane, cutting it and allowing the activation solution to enter the packing column. After activation, the sealing plug is separated from the loading column, and the sample solution is dripped into the packing column through the loading column. After loading, the elution column is pressed down, causing the connecting block to engage with the second locking block and the second connecting slot. At this point, the second membrane-breaking module penetrates the second easy-tear membrane. The elution column is then rotated less than one revolution, allowing the elution solution to enter the packing column. After elution, the eluent is dripped into the packing column through the loading column. This method avoids contamination and loss during solvent transfer. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the activation column, sample loading column, and elution column in this utility model; Figure 3 for Figure 2 A schematic diagram of the structure of A in the middle; Figure 4 for Figure 2 Front view structural diagram; Figure 5 This is a schematic diagram of the structure of the packing column, the first clamping block, and the first membrane breaking block in this utility model.

[0014] In the diagram: 1. Packing column; 101. First locking block; 102. First membrane breaking block; 2. Activation column; 201. First locking groove; 202. Second locking groove; 203. Third locking groove; 204. First easy-tear membrane; 205. Second membrane breaking block; 3. Sample loading column; 301. Sealing plug; 302. Connecting platform; 4. Eluting column; 401. Connecting block; 402. Second locking block; 403. Second easy-tear membrane. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings: See attached document Figure 1-5 A solid-phase extraction column device for food testing laboratories includes a packed column 1, an activation column 2, a sample loading column 3, and an elution column 4. The activation column 2 is disposed above the packed column 1, and the interior of the activation column 2 is used to store the activation solution. The elution column 4 is used to store the elution solution, and the volume of the elution solution stored in the elution column 4 is designed according to the volume required for the experiment. Similarly, the volume of the activation solution stored in the activation column 2 can be designed according to the volume required for the experiment. The elution column 4 is disposed above the activation column 2, and the sample loading column 3 is fixedly disposed in the middle of the elution column 4. The sample loading column 3 is made of hollow material and is connected to the activation column 2.

[0016] A removable sealing plug 301 is provided at the upper end of the sample loading column 3, and a connecting platform 302 is provided in the middle of the sample loading column 3. The lower end face of the connecting platform 302 is flush with the opening end of the elution column 4. By separating the sealing plug 301 from the sample loading column 3, it is convenient for personnel to drip the sample solution into the packing column 1. A connecting block 401 is provided on both sides of the elution column 4, and a second locking block 402 is provided on the inner side of the connecting block 401. A second easy-tear film 403 is provided at the opening end of the elution column 4. The other side of the second easy-tear film 403 is bonded to the connecting platform 302. The lower opening of the elution column 4 is connected to the activation column 2, and the elution column 4 is sealed by the second easy-tear film 403.

[0017] A third slot 203 is provided below the activation column 2, a first slot 201 is provided on the upper side of the activation column 2, a second slot 202 is provided on the side of the activation column 2 adjacent to the first slot 201, and a second membrane breaking block 205 is provided on the upper inner wall of the activation column 2.

[0018] The first slot 201 and the second slot 202 have the same shape, and the first slot 201 and the second slot 202 are annular slots. The second slot 202 is an annular slot. The second slot 202 and the first slot 201 can be engaged with the second slot block 402 respectively. When the first slot 201 is connected to the second slot block 402, the second film breaking block 205 and the second easy-tear film 403 have a first gap. When the second slot 202 is connected to the second slot block 402, the second film breaking block 205 penetrates the second easy-tear film 403.

[0019] A first locking block 101 is provided on the upper part of the inside of the packing column 1, and a first membrane-breaking block is provided on the side of the packing column 1 adjacent to the first locking block 101. The first locking block 101 can engage with the third locking groove 203. When the first locking block 101 is connected to the third locking groove 203, the first membrane-breaking block 102 can penetrate the first easy-tear film 204. The first easy-tear film 204 is used to seal the lower opening of the activation column 2. A rubber ring is provided on the side of the packing column 1 adjacent to the lower opening of the activation column 2 for sealing the packing column 1 and the activation column 2.

[0020] Specifically, the packing column 1 is fixed, and then the activation column 2 is inserted into the interior of the packing column 1. The third slot 203 of the activation column 2 is connected to the first locking block 101. At this time, the first membrane-breaking block 102 penetrates the first easy-tear membrane 204. Then, the activation column 2 is rotated so that the first membrane-breaking block 102 rotates along the circumference of the first easy-tear membrane 204 to cut the first easy-tear membrane 204. The activation column 2 rotates less than one revolution to prevent the easy-tear membrane 204 from falling into the interior of the packing column 1, allowing the activation liquid to enter the interior of the packing column 1. After activation, the activation liquid is then... The sealing plug 301 is separated from the sample loading column 3. The sample liquid is dripped into the interior of the packing column 1 through the sample loading column 3. After the sample loading is completed, the elution column 4 is pressed down. The elution column 4 drives the connecting block 401 to move downward. The connecting block 401 drives the second locking block 402 to engage with the second connecting groove 202. At this time, the second breaking module 205 penetrates the second easy-tear membrane 403. Then the elution column is rotated less than 10 times, so that the elution liquid enters the interior of the packing column. After elution is completed, the eluent is dripped into the interior of the packing column 1 through the sample loading column 3, thereby completing the extraction. Meanwhile, during this process, personnel can understand whether the activation column 2 and elution column 4 contain reagents, which helps them understand the current operation steps of the solid phase extraction column and adapt it to batch sample analysis.

[0021] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. A solid-phase extraction column apparatus for food testing laboratories, characterized in that: This includes packed columns, activation columns, sample loading columns, and elution columns; An activation column is disposed above the packing column, an elution column is disposed above the activation column, and a sample loading column is fixedly disposed in the middle of the elution column.

2. The solid-phase extraction column apparatus for food testing laboratories according to claim 1, characterized in that: The upper end of the sample loading column is provided with a removable sealing plug, and the middle part of the sample loading column is provided with a connecting platform, the lower end face of which is flush with the open end of the elution column.

3. The solid-phase extraction column apparatus for food testing laboratories according to claim 1, characterized in that: Connecting blocks are provided on both sides of the rinsing column, and a second locking block is provided on the inner side of the connecting block. A second easy-tear film is provided at the open end of the rinsing column, and the other side of the second easy-tear film is bonded to the connecting platform.

4. The solid-phase extraction column apparatus for food testing laboratories according to claim 1, characterized in that: A third slot is provided below the activation column, a first slot is provided on the upper side of the activation column, a second slot is provided on the side of the activation column adjacent to the first slot, and a second membrane breaking block is provided on the upper inner wall of the activation column.

5. A solid-phase extraction column apparatus for food testing laboratories according to claim 4, characterized in that: The first card slot and the second card slot have the same shape, and the first card slot and the second card slot are annular grooves. The second card slot is an annular groove, and the second card slot and the first card slot can respectively engage with the second card block. When the first card slot is connected to the second card block, the second film-breaking block and the second easy-tear film have a first gap; When the second slot is connected to the second block, the second tearing block penetrates the second easy-tear film.

6. A solid-phase extraction column apparatus for food testing laboratories according to claim 1, characterized in that: The packing column is provided with a first locking block on the upper part of its interior, and a first membrane breaking block is provided on the side of the packing column adjacent to the first locking block.

7. A solid-phase extraction column apparatus for food testing laboratories according to claim 6, characterized in that: The first card block can engage with the third card slot. When the first card block is connected to the third card slot, the first film-breaking block can penetrate the first easy-tear film.

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