Solid-phase extraction column connector

Abstract

The solid-phase extraction column connector comprises a transparent transfer tube shell and a transfer column, the transfer column is inserted into the inner wall of the transparent transfer tube shell, a liquid guide groove is formed in the outer wall of the bottom of the transfer column, a liquid guide channel is formed in the inner wall of one side of the liquid guide groove, a liquid guide hole is formed in one end of the top of the transfer column, and the liquid guide channel is communicated with the liquid guide hole. And one side of the bottom of the transparent transfer pipe shell is provided with a main butt joint hole, the main butt joint hole is located at the bottom of the liquid guide groove, and the inner wall of the main butt joint hole is communicated with a first control valve. By pushing the position of the transfer column in the transparent transfer tube shell, the liquid guide hole is controlled to be connected with the solid-phase extraction column of the auxiliary butt joint hole corresponding to the liquid guide hole, so that the solid-phase extraction column is conveniently controlled to be connected with different extraction columns, repeated butt joint is not needed, connection is convenient, and extract liquid can be prevented from being polluted.

Description

Technical Field

[0001] The utility model relates to the technical field of syringe connection equipment, in particular to a solid phase extraction column connector. Background Art

[0002] Solid phase extraction column is a sample pretreatment device developed from chromatography column and used for extraction, separation and concentration. Most common solid phase extraction columns are syringe-type devices made of polypropylene. The device is equipped with two plugs made of polyethylene or glass fiber, and a certain amount of chromatographic adsorbent is filled between the two plugs.

[0003] Existing solid phase extraction columns require the use of connectors when extracting samples to extract the samples into the solid phase extraction column. However, when a single solid phase extraction column is used to extract multiple groups of samples for combination, different extraction columns need to be replaced multiple times. During the replacement process, not only multiple dockings are required, but there is also a risk of contaminating the extract. Therefore, we propose a solid phase extraction column connector. Utility Model Content

[0004] The utility model aims to provide a solid phase extraction column connector to solve the above-mentioned shortcomings in the technology.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a solid phase extraction column connector, comprising a transparent transfer tube shell and a transfer column, the transfer column is inserted into the inner wall of the transparent transfer tube shell, the bottom outer wall of the transfer column is provided with a liquid guide groove, the inner wall of one side of the liquid guide groove is provided with a liquid guide channel, the top end of the transfer column is provided with a liquid guide hole, the other end of the liquid guide channel is connected to the liquid guide hole, the bottom side of the transparent transfer tube shell is provided with a main docking hole, the inner wall of the main docking hole is connected with a first control valve, one end of the first control valve is connected with a first universal joint, the top outer wall of the transparent transfer tube shell is provided with equally distributed secondary docking holes, the inner wall of the secondary docking hole is connected with equally distributed right-angle elbows, one end of the right-angle elbow is connected with a second control valve, and one end of the second control valve is fixedly provided with a second universal joint.

[0006] Preferably, a silicone sealing ring is fixedly provided on the inner wall of the liquid guiding hole.

[0007] Preferably, the inner wall contour of the liquid guide hole is matched with the inner wall contour of the auxiliary docking hole, and the outer wall of the silicone sealing ring is interference fit with the inner wall of the transparent transfer tube shell to avoid leakage at the connection part between the liquid guide hole and the auxiliary docking hole.

[0008] Preferably, a sliding opening is formed on the outer wall at one end of the transparent transfer tube shell, a push rod is fixedly provided on the outer wall at one end of the transfer column, the outer wall of the push rod is slidably connected to the inner wall of the sliding opening, and a push piece is fixedly provided on the outer wall at one end of the push rod, so that the transfer column can be pushed to translate on the inner wall of the transparent transfer tube shell through the push piece and the push rod.

[0009] Preferably, the outer walls on both sides of the transfer column are fixedly provided with limiting guide rails, and the inner walls on both sides of the transparent transfer tube shell are provided with limiting guide grooves.

[0010] Preferably, the inner wall of the position-limiting guide groove is slidably connected to the outer wall of the position-limiting guide rail, which can prevent the transfer column from rotating on the inner wall of the transparent transfer tube shell.

[0011] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0012] The push rod is pushed by the push piece, and the push rod pushes the transfer column to translate on the inner wall of the transparent transfer tube shell, and the position of the liquid guide hole is adjusted, and the liquid guide hole is moved to the bottom of the designated secondary docking hole, and then the secondary docking hole is connected to the solid phase extraction column connected by the right-angle elbow, the second control valve and the second universal connector, and the liquid guide hole is connected to the corresponding sampling extraction column through the liquid guide channel, the liquid guide groove, the first control valve and the first universal connector;

[0013] By pushing the transfer column in the transparent transfer tube shell, the liquid guide hole is controlled to be connected to the solid phase extraction column of its corresponding secondary docking hole, which facilitates the control of the solid phase extraction column to be connected with different extraction columns. The connection is convenient, no multiple docking is required, and contamination of the extraction liquid can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of a solid phase extraction column connector of the utility model;

[0016] Figure 2 This is a schematic diagram of a transparent transfer tube shell structure of a solid phase extraction column connector of the utility model;

[0017] Figure 3 This is a schematic diagram of the cross-sectional structure of a transparent transfer tube shell of a solid phase extraction column connector of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of a transparent transfer column of a solid phase extraction column connector of the utility model;

[0019] Figure 5 The utility model is a schematic diagram of the cross-sectional structure of a transparent transfer column of a solid phase extraction column connector.

[0020] Description of reference numerals:

[0021] 1 transparent transfer tube shell, 2 transfer column, 3 liquid guide groove, 4 liquid guide channel, 5 liquid guide hole, 6 silicone sealing ring, 7 main docking hole, 8 first control valve, 9 first universal joint, 10 secondary docking hole, 11 right angle elbow, 12 second control valve, 13 second universal joint, 14 push rod, 15 push piece, 16 sliding port, 17 limit guide rail, 18 limit guide groove. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0023] Embodiment 1

[0024] Refer to the instruction manual Figure 1-5 A solid phase extraction column connector comprises a transparent transfer tube shell 1 and a transfer column 2, the transfer column 2 is inserted into the inner wall of the transparent transfer tube shell 1, a liquid guide groove 3 is opened on the bottom outer wall of the transfer column 2, a liquid guide channel 4 is opened on the inner wall of one side of the liquid guide groove 3, a liquid guide hole 5 is opened on the top end of the transfer column 2, and the other end of the liquid guide channel 4 is connected to the liquid guide hole 5, a main docking hole 7 is opened on one side of the bottom of the transparent transfer tube shell 1, the main docking hole 7 is located at the bottom of the liquid guide groove 3, the inner wall of the main docking hole 7 is connected to a first control valve 8, one end of the first control valve 8 is connected to a first universal joint 9, the top outer wall of the transparent transfer tube shell 1 is opened with equally distributed secondary docking holes 10, the inner wall of the secondary docking hole 10 is connected to equally distributed right-angle elbows 11, one end of the right-angle elbow 11 is connected to a second control valve 12, and one end of the second control valve 12 is fixedly provided with a second universal joint 13.

[0025] Embodiment 2

[0026] Based on the first embodiment, a silicone sealing ring 6 is fixedly provided on the inner wall of the liquid guiding hole 5, the inner wall contour of the liquid guiding hole 5 is adapted to the inner wall contour of the auxiliary docking hole 10, and the outer wall of the silicone sealing ring 6 is interference fit with the inner wall of the transparent transfer tube shell 1 to avoid leakage at the connection part between the liquid guiding hole 5 and the auxiliary docking hole 10.

[0027] Embodiment 3

[0028] Based on the first embodiment, a sliding opening 16 is provided on the outer wall at one end of the transparent transfer tube shell 1, a push rod 14 is fixedly provided on the outer wall at one end of the transfer column 2, the outer wall of the push rod 14 is slidably connected to the inner wall of the sliding opening 16, a push piece 15 is fixedly provided on the outer wall at one end of the push rod 14, and the push piece 15 and the push rod 14 are used to facilitate pushing the transfer column 2 to translate on the inner wall of the transparent transfer tube shell 1, and limiting guide rails 17 are fixedly provided on the outer walls on both sides of the transfer column 2, and limiting guide grooves 18 are provided on the inner walls on both sides of the transparent transfer tube shell 1, and the inner walls of the limiting guide grooves 18 are slidably connected to the outer walls of the limiting guide rails 17, which can prevent the transfer column 2 from rotating on the inner wall of the transparent transfer tube shell 1.

[0029] Working principle of this utility model:

[0030] Refer to the instruction manual Figure 1-5 When the utility model is used, the solid phase extraction column that needs to be combined for sampling is first installed and connected to the first universal connector 9, and the solid phase extraction column containing the sample is connected through the second universal connector 13. The push rod 14 is pushed by the push piece 15, and the push rod 14 pushes the transfer column 2 to translate on the inner wall of the transparent transfer tube shell 1, and the position of the liquid guide hole 5 is adjusted, and the liquid guide hole 5 is moved to the bottom of the designated secondary docking hole 10, and then the secondary docking hole 10 is connected to the solid phase extraction column connected by the right-angle elbow 11, the second control valve 12 and the second universal connector 13, and the liquid guide hole 5 is connected to the corresponding sampling extraction column through the liquid guide channel 4, the liquid guide groove 3, the first control valve 8 and the first universal connector 9. The transfer column 2 is pushed to control the liquid guide hole 5 to connect to the corresponding solid phase extraction column, which is convenient for controlling the connection between the solid phase extraction column and different extraction columns, without multiple docking, and can avoid contamination of the extraction liquid.

[0031] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A solid phase extraction column connector, comprising a transparent transfer tube shell (1) and a transfer column (2), wherein the transfer column (2) is plugged into the inner wall of the transparent transfer tube shell (1), characterized in that: The bottom outer wall of the transfer column (2) is provided with a liquid guide groove (3), and the inner wall of one side of the liquid guide groove (3) is provided with a liquid guide channel (4). The top end of the transfer column (2) is provided with a liquid guide hole (5), and the other end of the liquid guide channel (4) is connected to the liquid guide hole (5). The bottom side of the transparent transfer tube shell (1) is provided with a main docking hole (7), and the main docking hole (7) is located at the bottom of the liquid guide groove (3). The inner wall of the main docking hole (7) is connected to a first control valve (8), and one end of the first control valve (8) is connected to a first universal joint (9). The top outer wall of the transparent transfer tube shell (1) is provided with equally spaced auxiliary docking holes (10), and the inner wall of the auxiliary docking holes (10) is connected to equally spaced right-angled bends (11), and one end of the right-angled bends (11) is connected to a second control valve (12), and one end of the second control valve (12) is fixedly provided with a second universal joint (13).

2. A solid phase extraction column connector according to claim 1, characterized in that: A silicone sealing ring (6) is fixedly provided on the inner wall of the liquid guide hole (5).

3. A solid phase extraction column connector according to claim 2, characterized in that: The inner wall contour of the liquid guide hole (5) is matched with the inner wall contour of the auxiliary docking hole (10), and the outer wall of the silicone sealing ring (6) is interference-fitted with the inner wall of the transparent transfer tube shell (1).

4. A solid phase extraction column connector according to claim 1, characterized in that: A sliding opening (16) is formed on the outer wall of one end of the transparent transfer tube shell (1), a push rod (14) is fixedly provided on the outer wall of one end of the transfer column (2), the outer wall of the push rod (14) is slidably connected to the inner wall of the sliding opening (16), and a push piece (15) is fixedly provided on the outer wall of one end of the push rod (14).

5. The solid phase extraction column connector according to claim 1, characterized in that: Position limiting guide rails (17) are fixedly provided on the outer walls of both sides of the transfer column (2), and position limiting guide grooves (18) are provided on the inner walls of both sides of the transparent transfer tube shell (1).

6. A solid phase extraction column connector according to claim 5, characterized in that: The inner wall of the position limiting guide groove (18) is slidably connected to the outer wall of the position limiting guide rail (17).

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