Sample solid-phase extraction device

Abstract

The utility model belongs to the technical field of experimental instruments, and particularly relates to a sample solid-phase extraction device which comprises supporting legs, a lifting structure is mounted at the tops of the supporting legs, an adjusting structure is mounted in the middle of the lifting structure, an extraction structure is arranged at the top of the adjusting structure, and the adjusting structure comprises an adjusting unit and a discharged liquid collecting unit. The adjusting unit comprises an asynchronous motor, the output end of the asynchronous motor is connected with a transmission part, a first bearing is installed on the outer surface, close to the bottom end, of the transmission part, and a collecting table is installed in the middle of the outer surface of the transmission part. According to the sample solid-phase extraction device, the asynchronous motor is started to drive the transmission part to rotate, so that the transmission part can be used for driving the collection table to rotate, and the collection table rotates to drive the waste liquid pipe, the waste liquid hopper and the collection bottle to rotate, so that waste liquid and collection can be adjusted when working procedures such as drip washing and elution are carried out; different working procedures in the extraction process can be more flexibly coped.

Description

Technical Field

[0001] The utility model relates to the technical field of experimental instruments, in particular to a sample solid phase extraction device. Background Art

[0002] Solid phase extraction (SPE) technology is based on the theory of liquid-solid phase chromatography. It uses selective adsorption and selective elution to enrich, separate and purify samples. It is a physical extraction process that includes liquid and solid phases. It can also be roughly regarded as a simple chromatographic process. The more commonly used method is to pass the liquid sample solution through the adsorbent to retain the substance to be tested, then use a solvent of appropriate strength to flush out the impurities, and then use a small amount of solvent to quickly elute the substance to be tested, so as to achieve the purpose of rapid separation, purification and concentration. It can also selectively adsorb interfering impurities and let the substance to be tested flow out; or it can adsorb impurities and the substance to be tested at the same time, and then use a suitable solvent to selectively elute the substance to be tested.

[0003] In the current laboratory sample pretreatment process, solid phase extraction is generally performed manually. Operators need to manually perform a series of extraction operations such as activation, loading, rinsing, and elution. This is not only inefficient and has high labor costs, but the manual operation process cannot control the amount of solvent used, and is prone to solvent waste, increasing experimental costs.

[0004] For example, a solid phase extraction device disclosed in Chinese patent CN213221055U is provided, which is provided with a base, an extraction rack, which is mounted on the base and used to place a solid phase extraction column, a sample rack, which is mounted on the base and used to place a sample container, and an execution module, which is movably mounted on the base and used to perform activation, sample loading and elution operations on the solid phase extraction column on the extraction rack. The execution module is also used to transfer the solid phase extraction column that has been eluted to the top of the sample container and perform elution operations on the solid phase extraction column. It can replace manual labor to realize the automatic extraction function, effectively improve the extraction efficiency, and save labor costs and experimental costs.

[0005] However, the solid phase extraction device in the prior art needs to complete a series of operations such as activation, loading, rinsing, and elution, so a variety of waste liquids will appear in the extraction process. In addition, the collected liquids are relatively different according to the required samples. However, the prior art cannot flexibly collect or discharge the liquids, and the operation is relatively inflexible.

[0006] For this reason, we urgently need to provide a sample solid phase extraction device. Utility Model Content

[0007] The purpose of the utility model is to provide a sample solid phase extraction device to solve the problem that the solid phase extraction device in the prior art proposed in the above background technology needs to complete a series of operations such as activation, sample loading, rinsing, elution, etc., so a variety of waste liquids will appear in the extraction process, and the collection liquid is relatively different according to the different samples required, and the prior art cannot flexibly collect or discharge the liquid, and the operation is relatively inflexible.

[0008] To achieve the above objectives, the utility model provides the following technical solutions: a sample solid phase extraction device, comprising a support leg, a lifting structure is installed on the top of the support leg, an adjustment structure is installed in the middle of the lifting structure, and an extraction structure is arranged on the top of the adjustment structure.

[0009] The regulating structure includes a regulating unit and a drainage collection unit.

[0010] The regulating unit comprises an asynchronous motor, the output end of the asynchronous motor is connected to a transmission member, a bearing 1 is installed on the outer surface of the transmission member near the bottom end, and a collecting platform is installed in the middle of the outer surface of the transmission member.

[0011] Preferably, the collecting unit comprises a waste liquid pipe, a waste liquid bucket is installed on the top of the waste liquid pipe, collecting buckets are arranged on the left and right sides of the waste liquid pipe, and a collecting bottle is arranged on one side of the back of the waste liquid pipe.

[0012] Preferably, the waste liquid pipe is installed inside a circular hole on the top surface of the collecting platform near the front side, the collecting bucket is fixedly installed in the middle of the left and right sides of the outer surface of the collecting platform, a rectangular groove is opened in the middle of the top surface of the collecting platform, the top surface of the collecting bucket and the bottom of the collecting groove are located in the same horizontal plane, and the collecting bottle is installed inside a circular hole on the top surface of the collecting platform near the back side. The top surface of the collecting platform is inclined toward the middle at a certain angle, and the middle section of the bottom of the rectangular groove is higher than the two ends.

[0013] Preferably, the extraction structure includes a workbench, a second bearing is installed in the middle of the top surface of the workbench, an extraction tube is installed on the top surface of the workbench close to the back side, and a connecting plate is installed in the middle of the left and right sides of the outer surface of the workbench.

[0014] Preferably, the inner wall of the second bearing is connected to the outer surface of the transmission member near the top, and the extraction tube is installed inside the through hole opened on the top surface of the workbench near the back side. A solid phase extraction column is placed inside the extraction tube, and the two connecting plates are fixedly connected to the outer surface of the lifting box at one end away from each other.

[0015] Preferably, the lifting structure includes a base, a lifting box is installed on the left and right sides of the middle part of the top surface of the base, a hydraulic cylinder is installed inside the lifting box, a lifting plate is installed at the output end of the hydraulic cylinder, a mounting plate is installed on one side of the two lifting plates close to each other, and a piston is installed in the middle of the bottom surface of the mounting plate.

[0016] Preferably, the bottom surface of the base is fixedly connected to the top of the supporting leg, a universal wheel is installed at the bottom of the supporting leg, the outer surface of the lifting plate is slidably connected to the inner wall of the lifting box, and the bottom surface of the hydraulic cylinder is connected to the top surface of the base.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The sample solid phase extraction device starts the asynchronous motor to drive the transmission part to rotate by adjusting the setting of the structure, so that the transmission part can be used to drive the collection table to rotate, and the rotation of the collection table can be used to drive the waste liquid pipe, the waste liquid bucket, and the collection bottle to rotate, so that the waste liquid and the collection can be adjusted during the leaching and elution processes, and different processes in the extraction process can be more flexibly responded to.

[0019] 2. The sample solid phase extraction device, through the setting of the lifting structure, uses a hydraulic cylinder to drive the lifting plate and the mounting plate to rise and fall, and can drive the mounting plate and the piston to fall. By sliding the piston inside the extraction tube, the pressure can be used to promote the flow of the eluent or the activated solvent between the adsorbents, thereby effectively improving the extraction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the appearance structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0022] Figure 3 This is an enlarged view of the adjustment structure of the utility model;

[0023] Figure 4 It is an enlarged view of the compression structure of the utility model.

[0024] In the figure: 1, supporting leg; 101, asynchronous motor; 102, transmission part; 103, bearing 1; 104, collecting table; 105, waste liquid pipe; 106, waste liquid bucket; 107, collecting bucket; 108, collecting bottle; 201, working table; 202, bearing 2; 203, extraction tube; 204, connecting plate; 301, base; 302, lifting box; 303, hydraulic cylinder; 304, lifting plate; 305, mounting plate; 306, piston. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-Figure 4 , the utility model provides a technical solution:

[0027] Embodiment 1:

[0028] A sample solid phase extraction device comprises a support leg 1, a lifting structure is installed on the top of the support leg 1, an adjusting structure is installed in the middle of the lifting structure, and an extraction structure is arranged on the top of the adjusting structure.

[0029] The regulating structure includes a regulating unit and a drainage collection unit. The regulating unit includes an asynchronous motor 101, the output end of the asynchronous motor 101 is connected to a transmission member 102, a bearing 103 is installed on the outer surface of the transmission member 102 near the bottom, and a collection platform 104 is installed in the middle of the outer surface of the transmission member 102. The collection unit includes a waste liquid pipe 105, a waste liquid bucket 106 is installed on the top of the waste liquid pipe 105, collection buckets 107 are arranged on the left and right sides of the waste liquid pipe 105, and a collection bottle 108 is arranged on the back side of the waste liquid pipe 105.

[0030] The waste liquid pipe 105 is installed inside the circular hole opened on the top surface of the collecting platform 104 near the front side, the collecting bucket 107 is fixedly installed in the middle of the left and right sides of the outer surface of the collecting platform 104, a rectangular groove is opened in the middle of the top surface of the collecting platform 104, the top surface of the collecting bucket 107 and the bottom of the collecting groove are located in the same horizontal plane, and the collecting bottle 108 is installed inside the circular hole opened on the top surface of the collecting platform 104 near the back side.

[0031] By setting the adjustment structure, the asynchronous motor 101 is started to drive the transmission member 102 to rotate, so that the transmission member 102 can be used to drive the collection table 104 to rotate, and the rotation of the collection table 104 can be used to drive the waste liquid pipe 105, the waste liquid bucket 106, and the collection bottle 108 to rotate, so that the waste liquid and collection can be adjusted during the elution and other processes, so as to cope with different processes in the extraction process more flexibly.

[0032] When performing the steps of rinsing and eluting in the extraction process, it is necessary to adjust the relative positions of the required extraction tube 203 and the waste liquid bucket 106 and the collection bottle 108 according to different steps, thereby starting the asynchronous motor 101 to drive the transmission member 102 for transmission, and the transmission member 102 includes a worm, a worm wheel, and a rotating shaft. The output end of the asynchronous motor 101 drives the worm to rotate, and the worm is meshed with the worm wheel. The rotation of the worm wheel drives the rotating shaft to rotate, and the rotation of the rotating shaft drives the collection table 104 to rotate. The rotation of the collection table 104 drives the waste liquid tube 105, the waste liquid bucket 106, and the collection bottle 108 to rotate, thereby changing the relative position with the extraction tube 203, which is convenient for use. In the extraction process, if waste liquid drips, the rectangular groove can be used to guide the waste liquid to enter the inside of the collection bucket 107 and guide it to the waste liquid collection place.

[0033] Embodiment 2:

[0034] On the basis of the first embodiment, the extraction structure includes a workbench 201, a second bearing 202 is installed in the middle of the top surface of the workbench 201, an extraction tube 203 is installed on the top surface of the workbench 201 near the back side, and a connecting plate 204 is installed in the middle of the left and right sides of the outer surface of the workbench 201. The inner wall of the second bearing 202 is connected to the outer surface of the transmission member 102 near the top, and the extraction tube 203 is installed inside the through hole opened on the top surface of the workbench 201 near the back side.

[0035] The lifting structure includes a base 301, a lifting box 302 is installed on the left and right sides of the middle of the top surface of the base 301, a hydraulic cylinder 303 is installed inside the lifting box 302, a lifting plate 304 is installed at the output end of the hydraulic cylinder 303, a mounting plate 305 is installed on the side where the two lifting plates 304 are close to each other, and a piston 306 is installed in the middle of the bottom surface of the mounting plate 305. The bottom surface of the base 301 is fixedly connected to the top of the support leg 1, a universal wheel is installed at the bottom of the support leg 1, the outer surface of the lifting plate 304 is slidably connected to the inner wall of the lifting box 302, and the bottom surface of the hydraulic cylinder 303 is connected to the top surface of the base 301.

[0036] By setting up the lifting structure, the hydraulic cylinder 303 is used to drive the lifting plate 304 and the mounting plate 305 to rise and fall, and the mounting plate 305 and the piston 306 can be driven to fall. By sliding the piston 306 inside the extraction tube 203, the pressure can be used to promote the flow of the eluent or the activated solvent between the adsorbents, thereby effectively improving the extraction efficiency.

[0037] During the process of solvent activation of the solid phase extraction column, the activation solvent is placed inside the extraction tube 203, and the hydraulic cylinder 303 is started to drive the lifting plate 304 to descend. The lifting plate 304 is then used to drive the mounting plate 305 to descend, thereby driving the piston 306 to descend synchronously. The sliding connection of the piston 306 inside the extraction tube 203 can be used to apply air pressure to the inside of the extraction tube 203, thereby increasing the flow rate between the activation solvent and the solid phase extraction column, and effectively improving the activation efficiency.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A sample solid phase extraction device, comprising a support leg (1), characterized in that: A lifting structure is installed on the top of the support leg (1), an adjustment structure is installed in the middle of the lifting structure, and an extraction structure is arranged on the top of the adjustment structure; The regulating structure includes a regulating unit and a drainage collection unit; The regulating unit comprises an asynchronous motor (101), the output end of the asynchronous motor (101) is connected to a transmission member (102), a bearing 1 (103) is installed on the outer surface of the transmission member (102) near the bottom end, and a collecting platform (104) is installed in the middle of the outer surface of the transmission member (102).

2. A sample solid phase extraction device according to claim 1, characterized in that: The collecting unit comprises a waste liquid pipe (105), a waste liquid bucket (106) is installed on the top of the waste liquid pipe (105), collecting buckets (107) are arranged on the left and right sides of the waste liquid pipe (105), and a collecting bottle (108) is arranged on the back side of the waste liquid pipe (105).

3. A sample solid phase extraction device according to claim 2, characterized in that: The waste liquid pipe (105) is installed inside a circular hole opened on the top surface of the collecting platform (104) close to the front side, the collecting bucket (107) is fixedly installed in the middle of the left and right sides of the outer surface of the collecting platform (104), a rectangular groove is opened in the middle of the top surface of the collecting platform (104), the top surface of the collecting bucket (107) and the bottom of the collecting groove are located in the same horizontal plane, and the collecting bottle (108) is installed inside a circular hole opened on the top surface of the collecting platform (104) close to the back side.

4. A sample solid phase extraction device according to claim 1, characterized in that: The extraction structure comprises a workbench (201), a bearing 2 (202) is installed in the middle of the top surface of the workbench (201), an extraction tube (203) is installed on the top surface of the workbench (201) near the back side, and a connecting plate (204) is installed in the middle of the left and right sides of the outer surface of the workbench (201).

5. A sample solid phase extraction device according to claim 4, characterized in that: The inner wall of the second bearing (202) is connected to the outer surface of the transmission member (102) near the top, and the extraction tube (203) is installed inside a through hole opened on the top surface of the workbench (201) near the back side.

6. A sample solid phase extraction device according to claim 1, characterized in that: The lifting structure comprises a base (301), a lifting box (302) is installed on the left and right sides of the middle of the top surface of the base (301), a hydraulic cylinder (303) is installed inside the lifting box (302), a lifting plate (304) is installed at the output end of the hydraulic cylinder (303), a mounting plate (305) is installed on one side of the two lifting plates (304) close to each other, and a piston (306) is installed in the middle of the bottom surface of the mounting plate (305).

7. A sample solid phase extraction device according to claim 6, characterized in that: The bottom surface of the base (301) is fixedly connected to the top of the support leg (1), a universal wheel is installed at the bottom of the support leg (1), the outer surface of the lifting plate (304) is slidably connected to the inner wall of the lifting box (302), and the bottom surface of the hydraulic cylinder (303) is connected to the top surface of the base (301).

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