Solid-phase extraction device

Abstract

The utility model relates to the technical field of solid-phase extraction, and discloses a solid-phase extraction device which comprises a fixed table and two connecting plates, a vertical plate is fixedly connected to the rear side of the top wall of the fixed table, a motor is fixedly connected to the right side of the inner top wall of the vertical plate, and a threaded rod is fixedly connected to the output end of the motor; and the outer wall of the threaded rod is in threaded connection with the inner wall of the connecting plate on the rear side, extraction equipment is fixedly connected between the two adjacent connecting plates, cleaning shells are fixedly connected to the bottom walls of the two connecting plates, and two reset springs are fixedly connected to the adjacent sides of the inner walls of the two cleaning shells. According to the test tube cleaning device, the motor is started, so that the threaded rod drives the rear side connecting plate to move, then the extraction equipment is driven to move, the cleaning shell drives the cleaning sponge to clean an end opening and the outer wall of a test tube, the cleanliness of the test tube is guaranteed, and therefore the influence on a follow-up experiment is reduced.

Description

Technical Field

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

[0002] Solid phase extraction is a commonly used sample pretreatment technology used to separate and enrich target compounds from complex mixtures. During the solid phase extraction process, the sample interacts with the target compound through a certain adsorbent to achieve the adsorption, separation and extraction of the target compound, thereby purifying and concentrating the target substance. When performing solid phase extraction, a solid phase extraction device is usually used in conjunction with it.

[0003] After searching, the Chinese patent announcement number is: CN218529884U, which discloses a solid phase extraction device, including a box body, an adjusting component is arranged on the box body, a test tube is arranged on the adjusting component, an extraction tube located above the test tube is arranged on the adjusting component, a positioning component is arranged inside the adjusting component, and the adjusting component includes a driving motor, the driving motor is fixedly mounted on the inner bottom wall of the box body, a first screw is fixedly mounted on the output end of the driving motor, a second screw is fixedly mounted on the end of the first screw away from the driving motor, and the top of the second screw passes through and extends to the top of the box body, and the thread directions of the first screw and the second screw are opposite. The solid phase extraction device, by providing an adjustment component, can achieve the purpose of quickly docking the test tube and the extraction tube to extract the aggregate, or quickly separating to complete the extraction, thereby effectively improving the extraction efficiency and use effect of the device. However, in actual use, after the device completes the delivery of the extraction liquid, the extraction liquid may remain in the interior of the extraction tube, and after leaving the test tube, the residual extraction liquid may drip onto the port of the test tube under the action of the air-conditioning fan, which may cause contamination of the test tube and inconvenience for the subsequent use of the test tube. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a solid phase extraction device, which aims to improve the problem that extraction liquid may remain inside the extraction tube, and then after leaving the test tube, the residual extraction liquid may drip on the outer wall of the test tube, making it inconvenient to use the subsequent test tube.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a solid phase extraction device comprises a fixed platform and two connecting plates, a vertical plate is fixedly connected to the rear side of the top wall of the fixed platform, a motor is fixedly connected to the right side of the inner top wall of the vertical plate, a threaded rod is fixedly connected to the output end of the motor, the outer wall of the threaded rod is threadedly connected to the inner wall of the connecting plate at the rear side, an extraction device is fixedly connected between the two adjacent connecting plates, a cleaning shell is fixedly connected to the bottom walls of the two connecting plates, two reset springs are fixedly connected to the adjacent sides of the inner walls of the two cleaning shells, a mounting plate is fixedly connected to the adjacent sides of the multiple reset springs, a cleaning sponge brush is fixedly installed on the adjacent sides of the two mounting plates, a sliding column is fixedly connected to the left side of the inner top wall of the vertical plate, the middle part of the sliding column passes through the left side of the inner wall of the connecting plate at the rear side, a fixing seat is placed on the front side of the fixed platform, a plurality of test tubes are fixedly installed on the inner wall of the fixing seat at equal distances, and fixing mechanisms are provided on the left and right sides of the fixed platform.

[0006] Through the above technical solution: by starting the motor, the threaded knob is driven, and then under the rotation limit of the sliding column, the extraction device and the two connecting plates are displaced together, thereby driving the two cleaning shells and the cleaning sponge brushes installed on the inner walls thereof to clean the top wall and the outer wall of the test tube.

[0007] As a further description of the above technical solution:

[0008] The fixing mechanism includes two L-shaped plates, and the adjacent sides of the two L-shaped plates are respectively fixedly connected to the left and right sides of the fixing platform, and the adjacent sides of the inner walls of the two L-shaped plates are fixedly connected to the electric telescopic rods, and the output ends of the two electric telescopic rods are fixedly connected to the fixing plates, and the two fixing plates are threaded with two threaded knobs on the sides away from each other, and the adjacent sides of the multiple threaded knobs are threadedly connected to the clamps.

[0009] Through the above technical solution: the two electric telescopic rods are started, so that the two fixing plates drive the corresponding clamps fixedly installed by the threaded knobs to move, so that the fixing seat can be fixed, thereby improving the stability of the test tube.

[0010] As a further description of the above technical solution:

[0011] A control switch is fixedly connected to the left side of the vertical plate, and the control switch is electrically connected to the motor and the electric telescopic rod respectively.

[0012] Through the above technical solution: the motor and the electric telescopic rod can be opened and closed.

[0013] As a further description of the above technical solution:

[0014] The inner walls of the two clamps are fixedly mounted with rubber pads.

[0015] Through the above technical solution, the fixing effect of the two clamps is improved.

[0016] As a further description of the above technical solution:

[0017] A protective shell is arranged at the rear end of the left side of the vertical plate, and the right side of the protective shell is rotatably connected to the left side of the control switch through a hinge.

[0018] Through the above technical solution, the control switch can be protected and prevented from being accidentally touched.

[0019] As a further description of the above technical solution:

[0020] The left and right sides of the bottom wall of the fixed platform are fixedly connected with support frames, and the front and rear sides of the bottoms of the two support frames are fixedly installed with corner pads.

[0021] Through the above technical solution, the device is made more stable when working.

[0022] As a further description of the above technical solution:

[0023] A limiting block is fixedly connected to the middle portion of the inner top wall of the vertical plate.

[0024] Through the above technical solution, it is possible to avoid excessive displacement of the rear connecting plate to damage the motor.

[0025] As a further description of the above technical solution:

[0026] A rubber ring is fixedly mounted at the middle of each of the threaded knobs.

[0027] Through the above technical solution, the rotation damage of the threaded knob to the fixing plate is reduced.

[0028] The utility model has the following beneficial effects:

[0029] 1. In the utility model, by starting the motor, the threaded rod drives the rear connecting plate to move, and then drives the extraction device to move, so that the cleaning shell drives the cleaning sponge to clean the port and the outer wall of the test tube, thereby ensuring the cleanliness of the test tube, reducing the possibility of cross contamination, and thus reducing the impact on subsequent experiments.

[0030] 2. In the utility model, by starting two electric telescopic rods, the two fixing plates drive the clamp fixedly installed by the threaded knob to move, so that the device can stably clamp the test tube and the fixing seat, thereby reducing the shaking of the test tube and avoiding the failure of extraction caused by the deviation of the test tube during extraction. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A three-dimensional diagram of the solid phase extraction device proposed by the utility model;

[0032] Figure 2 This is a schematic diagram of the structure of the mounting plate of the solid phase extraction device proposed by the utility model;

[0033] Figure 3 This is a schematic diagram of the fixing mechanism of the solid phase extraction device proposed in the utility model.

[0034] Legend:

[0035] 1. Fixing table; 2. Fixing mechanism; 201. L-shaped plate; 202. Electric telescopic rod; 203. Fixing plate; 204. Threaded knob; 205. Rubber ring; 206. Rubber pad; 207. Clamp; 3. Vertical plate; 4. Motor; 5. Threaded rod; 6. Connecting plate; 7. Extraction equipment; 8. Cleaning shell; 9. Reset spring; 10. Mounting plate; 11. Cleaning sponge brush; 12. Sliding column; 13. Fixing seat; 14. Test tube; 15. Limiting block; 16. Control switch; 17. Protective shell; 18. Support frame; 19. Corner pad. DETAILED DESCRIPTION

[0036] 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.

[0037] Reference Figure 1 and Figure 2 , the utility model provides an embodiment: a solid phase extraction device, comprising a fixed platform 1 and two connecting plates 6, a vertical plate 3 is fixedly connected to the rear side of the top wall of the fixed platform 1, a motor 4 is fixedly connected to the right side of the inner top wall of the vertical plate 3, a threaded rod 5 is fixedly connected to the output end of the motor 4, the outer wall of the threaded rod 5 is threadedly connected to the inner wall of the rear connecting plate 6, an extraction device 7 is fixedly connected between the two adjacent connecting plates 6, a cleaning shell 8 is fixedly connected to the bottom walls of the two connecting plates 6, two reset springs 9 are fixedly connected to the adjacent sides of the inner walls of the two cleaning shells 8, a mounting plate 10 is fixedly connected to the adjacent sides of the multiple reset springs 9, a cleaning sponge brush 11 is fixedly installed on the adjacent sides of the two mounting plates 10, a sliding column 12 is fixedly connected to the left side of the inner top wall of the vertical plate 3, the middle part of the sliding column 12 passes through the left side of the inner wall of the rear connecting plate 6, a fixing seat 13 is placed on the front side of the fixed platform 1, a plurality of test tubes 14 are fixedly installed on the inner wall of the fixing seat 13 at equal intervals, and a fixing mechanism 2 is provided on the left and right sides of the fixed platform 1;

[0038] Specifically, when the motor 4 is started, the threaded rod 5 rotates. Since the threaded rod 5 is connected to the rear connecting plate 6, the rear connecting plate 6 is subject to a tendency of displacement and rotation along the axial direction of the threaded rod 5. However, under the rotation restriction of the sliding column 12, the rotation of the connecting plate 6 is effectively suppressed, and it can only move linearly along the sliding column 12. As the rear connecting plate 6 moves linearly, the extraction device 7 and the front connecting plate 6 will also move accordingly. In this process, the two cleaning shells 8 and the cleaning sponge brushes 11 installed inside will also move together. The cleaning sponge brush 11 has a unique arc-shaped concave design, which allows it to fit tightly against the port and outer wall of the test tube 14, thereby effectively cleaning. In order to ensure the tight fit between the cleaning sponge brush 11 and the test tube 14, the device is also equipped with a plurality of reset springs 9. Under the action of the elastic force of these reset springs 9, the cleaning sponge brush 11 can fit tightly against the surface of the test tube 14, thereby improving the cleaning effect. In addition, the reset spring 9 also has a certain buffering effect, which can protect the test tube 14 from impact and scratches. Through this design, the test tube cleaning equipment can not only efficiently clean the port and outer wall of the test tube 14, but also ensure the cleanliness of the test tube, thereby reducing the impact on subsequent experiments. The automated operation of the equipment also greatly improves work efficiency and reduces the labor intensity of experimenters.

[0039] Reference Figure 1 and Figure 3 The fixing mechanism 2 includes two L-shaped plates 201, and the adjacent sides of the two L-shaped plates 201 are fixedly connected to the left and right sides of the fixing platform 1 respectively. The adjacent sides of the inner walls of the two L-shaped plates 201 are fixedly connected with electric telescopic rods 202, and the output ends of the two electric telescopic rods 202 are fixedly connected with fixing plates 203. The two fixing plates 203 are threadedly penetrated with two threaded knobs 204 on the sides away from each other, and the adjacent sides of the multiple threaded knobs 204 are threadedly connected with clamps 207; the inner walls of the two clamps 207 are fixedly installed with rubber pads 206;

[0040] Specifically, the clamp 207 can be disassembled and replaced by rotating the threaded knob 204. This design not only improves the flexibility of the clamp 207, but also makes the maintenance and update of the clamp 207 more convenient. The electric telescopic rod 202 is started, so that the two fixing plates 203 drive the clamp 207 to move, thereby fixing the fixing seat 13 and the test tube 14. By accurately controlling the telescopic length of the electric telescopic rod 202, the experimenter can fix the fixing seat 13 and the test tube 14. This design not only improves the accuracy of the experiment, but also makes the experimental process more efficient and convenient, reduces the situation where the extraction fails due to the deviation of the test tube 14 during extraction, and improves the fixing effect of the two clamps 207 through the two rubber pads 206.

[0041] Reference Figure 1 , Figure 2 and Figure 3 The left side of the vertical plate 3 is fixedly connected with a control switch 16, and the control switch 16 is electrically connected to the motor 4 and the electric telescopic rod 202 respectively; a protective shell 17 is provided at the rear end of the left side of the vertical plate 3, and the right side of the protective shell 17 is rotatably connected to the left side of the control switch 16 through a hinge; a rubber ring 205 is fixedly installed in the middle of the plurality of threaded knobs 204;

[0042] Specifically, the device can be opened and closed by means of a control switch 16 electrically connected to the motor 4 and the electric telescopic rod 202 respectively, the control switch 16 can be protected and prevented from being accidentally touched by means of a protective shell 17, and the rotational damage of the threaded knob 204 to the fixing plate 203 can be reduced by means of two rubber rings 205.

[0043] Reference Figure 1 The left and right sides of the bottom wall of the fixed platform 1 are fixedly connected with support frames 18, and the front and rear sides of the bottoms of the two support frames 18 are fixedly installed with corner pads 19; the middle part of the inner top wall of the vertical plate 3 is fixedly connected with a limiting block 15;

[0044] Specifically, the support frame 18 and the corner pad 19 make the device more stable during operation, and the limiting block 15 can prevent the rear connecting plate 6 from excessively moving and thus causing damage to the motor 4.

[0045] Working principle: When starting to work, the motor 4 drives the threaded rod 5 to rotate, so that the rear connecting plate 6 has a tendency to move and rotate. Under the rotation restriction of the sliding column 12, the connecting plate 6 will not rotate, thereby driving the extraction device 7 and the front connecting plate 6 to move, so that the two cleaning shells 8 drive the cleaning sponge brushes 11 installed therein to move together, and then under the arc-shaped concave surface of the cleaning sponge brush 11, the port and the outer wall of the test tube 14 can be cleaned, so that the cleanliness of the test tube 14 is guaranteed, thereby reducing the impact on subsequent experiments. Through multiple reset Under the elastic force of the spring 9, the cleaning sponge brush 11 can fit the test tube 14, thereby improving the cleaning effect and ensuring work efficiency. By turning multiple threaded knobs 204 through fixed seats 13 of different specifications, the clamp 207 can be disassembled and replaced, and then the electric telescopic rod 202 is started, so that the two fixed plates 203 drive the clamp 207 fixedly installed by the threaded knob 204 to move, thereby completing the fixation of the fixed seat 13 and the test tube 14, reducing the shaking of the test tube 14, and avoiding the failure of extraction caused by the deviation of the test tube 14 during extraction.

[0046] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A solid phase extraction device, comprising a fixed platform (1) and two connecting plates (6), characterized in that: A vertical plate (3) is fixedly connected to the rear side of the top wall of the fixed platform (1); a motor (4) is fixedly connected to the right side of the inner top wall of the vertical plate (3); a threaded rod (5) is fixedly connected to the output end of the motor (4); the outer wall of the threaded rod (5) is threadedly connected to the inner wall of the rear connecting plate (6); an extraction device (7) is fixedly connected between two adjacent connecting plates (6); a cleaning shell (8) is fixedly connected to the bottom walls of the two connecting plates (6); two return springs (9) are fixedly connected to the adjacent sides of the inner walls of the two cleaning shells (8); The adjacent sides of each of the return springs (9) are fixedly connected to a mounting plate (10), and the adjacent sides of the two mounting plates (10) are fixedly installed with a cleaning sponge brush (11). The left side of the inner top wall of the vertical plate (3) is fixedly connected to a sliding column (12), and the middle part of the sliding column (12) passes through the left side of the inner wall of the rear connecting plate (6). A fixing seat (13) is placed on the front side of the fixing platform (1), and a plurality of test tubes (14) are fixedly installed on the inner wall of the fixing seat (13) at equal intervals. Fixing mechanisms (2) are provided on the left and right sides of the fixing platform (1).

2. The solid phase extraction device according to claim 1, characterized in that: The fixing mechanism (2) comprises two L-shaped plates (201), the adjacent sides of the two L-shaped plates (201) being fixedly connected to the left and right sides of the fixing platform (1), respectively; the adjacent sides of the inner walls of the two L-shaped plates (201) are fixedly connected to electric telescopic rods (202); the output ends of the two electric telescopic rods (202) are fixedly connected to fixing plates (203); two threaded knobs (204) are threadedly penetrated on the opposite sides of the two fixing plates (203); and the adjacent sides of the plurality of threaded knobs (204) are threadedly connected to clamps (207).

3. The solid phase extraction device according to claim 1, characterized in that: A control switch (16) is fixedly connected to the left side of the vertical plate (3), and the control switch (16) is electrically connected to the motor (4) and the electric telescopic rod (202) respectively.

4. The solid phase extraction device according to claim 2, characterized in that: Rubber pads (206) are fixedly mounted on the inner walls of the two clamps (207).

5. The solid phase extraction device according to claim 3, characterized in that: A protective shell (17) is provided at the rear end of the left side of the vertical plate (3), and the right side of the protective shell (17) is rotatably connected to the left side of the control switch (16) via a hinge.

6. The solid phase extraction device according to claim 1, characterized in that: The left and right sides of the bottom wall of the fixed platform (1) are both fixedly connected to support frames (18), and the front and rear sides of the bottoms of the two support frames (18) are both fixedly mounted with corner pads (19).

7. The solid phase extraction device according to claim 1, characterized in that: A limiting block (15) is fixedly connected to the middle portion of the inner top wall of the vertical plate (3).

8. The solid phase extraction device according to claim 2, characterized in that: A rubber ring (205) is fixedly mounted at the middle of each of the plurality of threaded knobs (204).

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