CN216418392U - Novel gravity flow solid phase extraction device - Google Patents
Novel gravity flow solid phase extraction device Download PDFInfo
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- CN216418392U CN216418392U CN202120748723.5U CN202120748723U CN216418392U CN 216418392 U CN216418392 U CN 216418392U CN 202120748723 U CN202120748723 U CN 202120748723U CN 216418392 U CN216418392 U CN 216418392U
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Abstract
The utility model relates to a novel self-flowing solid-phase extraction device which comprises a test tube rack, wherein a plurality of extraction devices are distributed on the test tube rack, each extraction device comprises a test tube, a funnel is arranged at the upper part of each test tube, a solid-phase extraction column is arranged at the upper part of each funnel, a guide pipe is connected to the bottom of each solid-phase extraction column, and each guide pipe penetrates through the corresponding funnel and is arranged in the corresponding test tube. According to the utility model, the test tube is arranged on the test tube rack, the funnel is arranged on the test tube, the guide tube and the solid-phase extraction column are arranged at the upper part of the funnel, so that the solid-phase extraction device is used in a normal-pressure environment, the side opening is formed in the side part of the funnel, the same internal and external pressure difference of the test tube is ensured, the self-flow of the solid-phase extraction device is realized, the opening in the side part of the funnel is formed from the top edge of the funnel to the bottom edge of the funnel, and the solid-phase extraction device can be suitable for the solid-phase extraction columns and the test tubes of different models.
Description
Technical Field
The utility model relates to the technical field of chemical analysis instruments, in particular to a novel self-flowing solid-phase extraction device.
Background
The solid phase extraction is used as a sample pretreatment technology, is more and more widely applied in laboratories, is mainly used for separating, purifying and concentrating samples, can effectively separate analytes and interfering components, reduces the sample pretreatment process, is simple to operate, saves time and labor, and is widely applied to the fields of pesticide residue detection, food analysis, medicines, commodity inspection and the like.
When the existing solid phase extraction column device is used, most of the existing solid phase extraction column devices are connected with a vacuum box through a solid phase extraction column, and are only suitable for vacuum environments, but some experiments do not need to be carried out under the vacuum environment and can not meet the experiment requirements of normal pressure environments; meanwhile, the traditional solid phase extraction column adopts multi-stage sealing, so that the internal pressure and the external pressure of the test tube are unbalanced, and the flow of substances in the solid phase extraction column is influenced. Meanwhile, the existing solid phase extraction device is only suitable for test tubes and solid phase extraction columns of the same model, but not suitable for test tubes and solid phase extraction devices of different models.
SUMMERY OF THE UTILITY MODEL
The utility model provides a novel self-flowing solid phase extraction device, which aims to solve the problems that the solid phase extraction device in the prior art cannot be used in a normal pressure environment and cannot be suitable for test tubes of different models.
In order to achieve the purpose, the technical scheme of the utility model is as follows:
the utility model provides a novel gravity flow solid phase extraction device, includes the test-tube rack, a plurality of extraction devices have been laid on the test-tube rack, the extraction device includes the test tube, test tube upper portion is provided with the funnel, funnel upper portion is provided with the solid phase extraction post, solid phase extraction bottom of the column portion is connected with the pipe, the pipe passes the funnel and sets up in the test tube.
Further, the diameter of the opening of the funnel is larger than that of the test tube, and a side opening is formed in the side part of the funnel.
Further, the side opening is arranged from the top edge of the funnel to the bottom edge of the funnel.
Further, the side opening has a length in the range of 0.8mm to 1.5 mm.
Further, the length range of the lower pipe body of the funnel is 3cm-4 cm.
Through the technical scheme, the utility model has the beneficial effects that:
according to the utility model, the test tube is arranged on the test tube rack, the funnel is arranged on the test tube, the guide tube and the solid-phase extraction column are arranged at the upper part of the funnel, so that the solid-phase extraction device is used in a normal-pressure environment, the side opening is formed in the side part of the funnel, the same internal and external pressure difference of the test tube is ensured, the self-flow of the solid-phase extraction device is realized, the opening in the side part of the funnel is formed from the top edge of the funnel to the bottom edge of the funnel, and the solid-phase extraction device can be suitable for the solid-phase extraction columns and the test tubes of different models.
Drawings
FIG. 1 is a schematic structural diagram of a novel gravity flow solid phase extraction device of the present invention.
Fig. 2 is an explosion structure schematic diagram of an extraction device of the novel gravity flow solid phase extraction device.
Fig. 3 is a schematic structural diagram of a funnel of the novel gravity flow solid phase extraction device.
The reference numbers in the drawings are as follows: 1 is a test-tube rack, 2 is a test tube, 3 is a funnel, 4 is a conduit, 5 is a solid-phase extraction column, and 6 is a side opening.
Detailed Description
The utility model is further described with reference to the following figures and detailed description:
as shown in fig. 1-3, a novel gravity flow solid phase extraction device, including test-tube rack 1, a plurality of extraction devices have been laid on test-tube rack 1, extraction device includes test tube 2, in this embodiment, test tube 2 is 10ml centrifuging tube, 2 upper portions of test tube are provided with funnel 3, 3 uncovered department diameters of funnel are greater than test tube 2, in this embodiment 3 bores of funnel are 4cm-4.5cm, side opening 6 has been seted up to 3 lateral parts of funnel, the length scope of side opening 6 is 0.8mm-1.5mm, in this embodiment the length of side opening 6 is 1.1 mm. The length range of the lower pipe body of the funnel 3 is 3cm-4cm, and in the embodiment, the length of the lower pipe body of the funnel 3 is 4 cm. 3 upper portions of funnel set up the solid phase extraction post, 5 bottoms of solid phase extraction post are connected with pipe 4, pipe 4 passes funnel 3 and sets up in test tube 2.
2 upper portions of test tube set up funnel 3, can guarantee that solid-phase extraction post 5 is vertical upwards to set up all the time on test tube 2, and 3 lower part pipe lengths of funnel are 3cm-4cm, and 3 lower part pipelines of funnel are short enough to cause solid-phase extraction post 5 to empty, prevent 3 pipeline overlengths of funnel simultaneously and influence the use of test tube 2, and in this embodiment, 3 bottom external diameters of funnel are 4mm-6mm, prevent the extraction post slope, prevent that the bottom diameter from excessively influencing test tube 2 to use simultaneously.
The above-described embodiments are merely preferred embodiments of the present invention, and not intended to limit the scope of the utility model, so that equivalent changes or modifications in the structure, features and principles described in the present invention should be included in the claims of the present invention.
Claims (5)
1. The utility model provides a novel gravity flow solid phase extraction device, its characterized in that, includes test-tube rack (1), a plurality of extraction devices have been laid on test-tube rack (1), the extraction device includes test tube (2), test tube (2) upper portion is provided with funnel (3), funnel (3) upper portion is provided with solid phase extraction post (5), solid phase extraction post (5) bottom is connected with pipe (4), pipe (4) pass funnel (3) and set up in test tube (2).
2. A novel gravity flow solid phase extraction device according to claim 1, characterized in that the opening of the funnel (3) has a diameter larger than that of the test tube (2), and the side of the funnel (3) is opened with a side opening (6).
3. A novel gravity flow solid phase extraction apparatus according to claim 2 wherein the side opening (6) opens into the top edge of the funnel (3) to the bottom edge of the funnel (3).
4. A novel gravity flow solid phase extraction device according to claim 2, characterized in that the length of the side opening (6) ranges from 0.8mm to 1.5 mm.
5. A novel gravity flow solid phase extraction device according to claim 2, characterized in that the length of the lower tube body of the funnel (3) is in the range of 3cm-4 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120748723.5U CN216418392U (en) | 2021-04-13 | 2021-04-13 | Novel gravity flow solid phase extraction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120748723.5U CN216418392U (en) | 2021-04-13 | 2021-04-13 | Novel gravity flow solid phase extraction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216418392U true CN216418392U (en) | 2022-05-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120748723.5U Active CN216418392U (en) | 2021-04-13 | 2021-04-13 | Novel gravity flow solid phase extraction device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216418392U (en) |
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2021
- 2021-04-13 CN CN202120748723.5U patent/CN216418392U/en active Active
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