A multi-channel fluid distribution mechanism for a solid phase extraction device

Abstract

The utility model discloses a kind of multi-channel fluid distribution mechanism of solid phase extraction device, including base, support rod, mounting plate and support plate;Fixedly set in the mounting sleeve of mounting plate inside.The utility model is through the design of distribution function, different degree of control amount processing can be carried out to the liquid volume of sample solution extraction to the collection sleeve of multiple quantity, thus, by using the device in the present application, the extraction effect of sample solution is ensured.The utility model is through the support design of auxiliary type, the state of collection sleeve and solid phase extraction column combination can be stably handled, in addition, when staff separates collection sleeve and solid phase extraction column, staff can take out from inside the base through the gap, improve the convenience that staff removes collection sleeve from inside the base.

Description

Technical Field

[0001] This utility model relates to the field of distribution device technology, specifically a multi-channel fluid distribution mechanism for a solid phase extraction device. Background Technology

[0002] Solid-phase extraction is a sample pretreatment technique that has been developed in recent years. It is derived from the combination of liquid-solid extraction columns and liquid chromatography. It is mainly used for the separation, purification and concentration of samples. Compared with the traditional liquid-liquid extraction method, it can improve the recovery rate of analytes, more effectively separate analytes from interfering components, reduce the sample pretreatment process, and is simple, time-saving and labor-saving.

[0003] A patent search revealed a document titled "A Large-Volume Manual Multi-Channel Solid-Phase Extraction Device" (publication number "CN219743988U"). This device uses a rocker arm to control a pressure plate to simultaneously squeeze multiple syringes, thereby distributing multiple extracted sample solutions into corresponding filtration flasks at consistent volumes. However, this device cannot distribute the extracted samples in multiple filtration flasks at different volumes, thus affecting the extraction efficiency. Therefore, this invention designs a multi-channel fluid distribution mechanism for a solid-phase extraction device to solve the aforementioned problem. Utility Model Content

[0004] The purpose of this invention is to provide a multi-channel fluid distribution mechanism for a solid-phase extraction device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-channel fluid distribution mechanism for a solid-phase extraction device, comprising a base, a support rod, a mounting plate, and a support plate; a mounting sleeve fixed inside the mounting plate, wherein the number of mounting sleeves is several; a solid-phase extraction column fixedly penetrating the bottom of the mounting sleeve, the solid-phase extraction column being fixedly penetrating the top of the base; a first solenoid valve fixed inside the solid-phase extraction column, slidably disposed within a sliding column inside the mounting sleeve, the sliding column having an integrally formed drain hole; a conveying assembly assembled outside the support plate, the conveying assembly discharging sample solution into the mounting sleeve, the conveying assembly comprising a housing fixed to the top of the support plate, a connector fixed to the bottom of the housing, the connector penetrating the support plate and the sliding column; a second solenoid valve fixed inside the connector, and a controller fixed to the outer wall of the housing.

[0006] Preferably, the number of connectors is several, and each connector corresponds to a sliding column. A one-way valve is fixed inside the drain hole.

[0007] Preferably, the mounting sleeve has an integrally formed scale inside, and the mounting sleeve is made of transparent material, and a check valve is fixedly installed at the lower end of the solid phase extraction column.

[0008] Preferably, a number of first springs are fixedly provided on the top of the mounting plate, the first springs corresponding to the mounting sleeves, and the end of the first spring away from the mounting plate is fixedly connected to the sliding column.

[0009] Preferably, an air inlet pipe is fixed inside the solid phase extraction column, a filter screen is fixed inside the air inlet pipe, and a valve is rotatably inserted through the outside of the air inlet pipe.

[0010] Preferably, a number of top rods are fixedly provided on the top of the base. The top rods pass through the mounting plate and are fixedly connected to the support plate, and the top rods and the mounting sleeve are misaligned.

[0011] Preferably, the base has a number of clearance holes integrally formed inside, and the base has a number of collection sleeves inside, with the collection sleeves threaded onto the lower outer end of the solid phase extraction column.

[0012] Preferably, the base is provided with a limiting component, which can provide auxiliary support for the collection sleeve. The limiting component includes a top plate disposed at the bottom of the collection sleeve and a second spring fixed at the bottom of the top plate.

[0013] Preferably, the top plate passes through the relief hole, and the top plate is slidably connected to the relief hole, and the bottom of the second spring is fixedly connected to the base.

[0014] Preferably, an observation hole is fixedly provided on the top of the box, and a sealing plate is provided on the left side of the top of the box via a hinge and on the right side via a latch.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. Through the design of the distribution function, this utility model can extract the sample solution into multiple collection sleeves and control the liquid volume to different degrees. Thus, by using the device in this application, the extraction effect of the sample solution is ensured.

[0017] 2. This utility model uses an auxiliary support design to stabilize the state of the collection sleeve combined with the solid phase extraction column. In addition, after the operator separates the collection sleeve from the solid phase extraction column, the operator can take the collection sleeve out of the base through the clearance hole, which improves the convenience of the operator to remove the collection sleeve from the base. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a front perspective view of the multi-channel fluid distribution mechanism of a solid-phase extraction device according to this utility model;

[0020] Figure 2 This is a 3D view of the interior of the base;

[0021] Figure 3 An internal 3D view of the mounting sleeve;

[0022] Figure 4 This is a three-dimensional view of the inside of the box.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1-Base, 2-Support rod, 3-Mounting plate, 4-Support plate, 5-Mounting sleeve, 6-Solid phase extraction column, 7-First solenoid valve, 8-Slide column, 9-Drain hole, 10-Conveying assembly, 1001-Box body, 1002-Connector, 1003-Second solenoid valve, 1004-Controller, 11-Check valve, 12-Scale, 13-Stop valve, 14-First spring, 15-Inlet pipe, 16-Filter screen, 17-Valve, 18-Top rod, 19-Leaving hole, 20-Collection sleeve, 21-Top plate, 22-Second spring, 23-Observation hole, 24-Sealing plate. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1

[0027] A preferred embodiment of the multi-channel fluid distribution mechanism of the solid-phase extraction device provided by this invention is, for example... Figures 1 to 4The diagram shows a multi-channel fluid distribution mechanism for a solid-phase extraction (SPE) apparatus, comprising a base 1, a support rod 2, a mounting plate 3, and a support plate 4; mounting sleeves 5 fixed inside the mounting plate 3, the number of which is several; a solid-phase extraction column 6 fixedly penetrating the bottom of the mounting sleeve 5, the solid-phase extraction column 6 fixedly penetrating the top of the base 1; a first solenoid valve 7 fixed inside the solid-phase extraction column 6, a sliding column 8 slidably disposed inside the mounting sleeve 5, and a drain hole 9 integrally formed inside the sliding column 8; a delivery assembly 10 assembled outside the support plate 4, the delivery assembly 10 discharging sample solution into the mounting sleeve 5, the delivery assembly 10 including a housing 1001 fixed to the top of the support plate 4, a connector 1002 fixed to the bottom of the housing 1001, the connector 1002 penetrating the support plate 4 and the sliding column 8; a second solenoid valve 1003 fixed inside the connector 1002, and a controller 1004 fixed to the outer wall of the housing 1001.

[0028] It should be noted that the existing multi-channel fluid distribution mechanism of solid phase extraction devices still has certain shortcomings in actual use. It cannot allow the sample solution to enter the solid phase extraction column in a controlled manner, which affects the extraction effect of the sample solution.

[0029] In this embodiment, the sample solution is first contained inside the housing 1001. The operator opens a single second solenoid valve 1003 by using the controller 1004. At this time, the solution inside the housing 1001 is discharged into the mounting sleeve 5 through the drain hole 9 via the connector 1002. Then, the second solenoid valve 1003 is closed, and the corresponding first solenoid valve 7 is opened. Then, the slide column 8 is pressed, causing the slide column 8 to push the solution into the solid phase extraction column 6, thereby extracting the solution. In this way, the operator can control the amount of solution discharged into multiple mounting sleeves 5 in sequence.

[0030] In a further preferred embodiment of this utility model, there are several connectors 1002, and each connector 1002 corresponds to a sliding column 8. A one-way valve 11 is fixed inside the drain hole 9. A scale 12 is integrally set inside the mounting sleeve 5, and the mounting sleeve 5 is made of transparent material. A check valve 13 is fixed at the lower end inside the solid phase extraction column 6. Several first springs 14 are fixed at the top of the mounting plate 3. The first springs 14 correspond to the mounting sleeves 5. The end of the first spring 14 away from the mounting plate 3 is fixedly connected to the sliding column 8. An air inlet pipe 15 is fixed inside the solid phase extraction column 6. A filter screen 16 is fixed inside the air inlet pipe 15, and a valve 17 rotatably passes through the outside of the air inlet pipe 15.

[0031] In this embodiment, the operator can precisely control the amount of solution injected into the mounting sleeve 5 by checking the scale 12. The one-way valve 11 can prevent the solution in the mounting sleeve 5 from flowing out of the drain hole 9. When the slide column 8 moves downward, the first spring 14 deforms. After the solution extraction is completed, the operator releases the slide column 8 and opens the valve 17, so that the outside gas is discharged into the interior of the solid phase extraction column 6 through the air inlet pipe 15. The filter screen 16 can filter the outside dust and impurities. In the above way, the rebound force of the first spring 14 can smoothly reset the slide column 8. The operator then closes the valve 17 and the second solenoid valve 1003. The check valve 13 can prevent the solution inside the solid phase extraction column 6 from being drawn when the slide column 8 resets.

[0032] Example 2

[0033] Based on Example 1, a preferred embodiment of the multi-channel fluid distribution mechanism of the solid-phase extraction apparatus provided by this invention is, for example... Figures 1 to 4 As shown: A number of top rods 18 are fixedly installed on the top of the base 1. The top rods 18 pass through the mounting plate 3 and are fixedly connected to the support plate 4. The top rods 18 and the mounting sleeve 5 are offset from each other. A number of clearance holes 19 are integrally provided inside the base 1. A number of collection sleeves 20 are provided inside the base 1. The collection sleeves 20 are threaded onto the lower outer end of the solid phase extraction column 6. A limiting component is provided inside the base 1. The limiting component can provide auxiliary support for the collection sleeves 20. The limiting component includes a top plate 21 set at the bottom of the collection sleeve 20; a second spring 22 fixed at the bottom of the top plate 21. The top plate 21 passes through the clearance hole 19 and is slidably connected to the clearance hole 19. The bottom of the second spring 22 is fixedly connected to the base 1. An observation hole 23 is fixedly provided on the top of the box 1001. A sealing plate 24 is provided on the left side of the top of the box 1001 by a hinge and on the right side by a latch.

[0034] In this embodiment, the extracted solution is discharged from the solid-phase extraction column 6 into the collection sleeve 20. The operator can rotate the collection sleeve 20 to separate it from the solid-phase extraction column 6, and then remove the collection sleeve 20 from the clearance hole 19. Alternatively, the operator can press the top plate 21 with one hand, causing the top plate 21 to deform the second spring 22, and then move the new collection sleeve 20 into the base 1 and combine it with the solid-phase extraction column 6. Releasing the top plate 21 allows the rebound force of the second spring 22 to support the collection sleeve 20, ensuring the stability of the combination of the collection sleeve 20 and the solid-phase extraction column 6. The operator can then pour new sample solution into the box 1001 through the observation hole 23, and then close the sealing plate 24. The top rod 18 improves the combined strength between the support rod 2, the mounting plate 3, and the support plate 4.

[0035] In summary, this application can extract sample solutions by dispensing and controlling the volume, thereby improving the extraction effect. In addition, the design of the disassembly and assembly function improves the convenience of combining or separating the collection sleeve from the solid phase extraction column.

Claims

1. A multi-channel fluid distribution mechanism for a solid-phase extraction device, characterized in that, include: Base (1), support rod (2), mounting plate (3) and support plate (4); A mounting sleeve (5) is fixed inside the mounting plate (3), and there are several mounting sleeves (5); a solid phase extraction column (6) is fixedly inserted through the bottom of the mounting sleeve (5), and the solid phase extraction column (6) is fixedly inserted through the top of the base (1); a first solenoid valve (7) is fixed inside the solid phase extraction column (6), and a sliding column (8) is slidably disposed inside the mounting sleeve (5), and a drain hole (9) is integrally provided inside the sliding column (8); A delivery assembly (10) is mounted outside the support plate (4). The delivery assembly (10) can discharge the sample solution into the mounting sleeve (5). The delivery assembly (10) includes: A box body (1001) fixed on the top of the support plate (4), and a connector (1002) fixed on the bottom of the box body (1001). The connector (1002) passes through the support plate (4) and the sliding column (8). A second solenoid valve (1003) is fixed inside the connector (1002), and a controller (1004) is fixed on the outer wall of the housing (1001).

2. The multi-channel fluid distribution mechanism of the solid-phase extraction device according to claim 1, characterized in that: The number of connectors (1002) is several, and each connector (1002) corresponds to a slide (8). A one-way valve (11) is fixed inside the drain hole (9).

3. The multi-channel fluid distribution mechanism of the solid-phase extraction device according to claim 1, characterized in that: The mounting sleeve (5) is equipped with a scale (12) inside, and the mounting sleeve (5) is made of transparent material. The lower end of the solid phase extraction column (6) is fixed with a check valve (13).

4. The multi-channel fluid distribution mechanism of the solid-phase extraction device according to claim 1, characterized in that: The top of the mounting plate (3) is fixed with a number of first springs (14), which correspond to the mounting sleeve (5). The end of the first spring (14) away from the mounting plate (3) is fixedly connected to the sliding column (8).

5. The multi-channel fluid distribution mechanism of the solid-phase extraction device according to claim 1, characterized in that: The solid phase extraction column (6) is equipped with an air inlet pipe (15), and a filter screen (16) is installed inside the air inlet pipe (15). A valve (17) is rotatably inserted through the outside of the air inlet pipe (15).

6. The multi-channel fluid distribution mechanism of the solid-phase extraction device according to claim 1, characterized in that: The base (1) is fixed with a number of top rods (18) at the top. The top rods (18) pass through the mounting plate (3) and are fixedly connected to the support plate (4). The top rods (18) and the mounting sleeve (5) are misaligned.

7. The multi-channel fluid distribution mechanism of the solid-phase extraction device according to claim 1, characterized in that: The base (1) has a number of clearance holes (19) integrated inside, and the base (1) has a number of collection sleeves (20) inside, and the collection sleeves (20) are threaded onto the lower end of the solid phase extraction column (6).

8. The multi-channel fluid distribution mechanism of the solid-phase extraction device according to claim 1, characterized in that: The base (1) is provided with a limiting component inside, which can provide auxiliary support for the collection sleeve (20). The limiting component includes: The top plate (21) is provided at the bottom of the collection sleeve (20); A second spring (22) is fixed at the bottom of the top plate (21).

9. The multi-channel fluid distribution mechanism of the solid-phase extraction device according to claim 8, characterized in that: The top plate (21) passes through the relief hole (19) and is slidably connected to the relief hole (19). The bottom of the second spring (22) is fixedly connected to the base (1).

10. The multi-channel fluid distribution mechanism of the solid-phase extraction device according to claim 1, characterized in that: The top of the box (1001) is fixed with an observation hole (23), and the top left side of the box (1001) is provided with a sealing plate (24) by hinge and the right side by a latch.

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