High-pressure sample introduction assembly of micro-chromatographic column

Abstract

The utility model relates to the technical field of chromatography, and discloses a micro-chromatographic column high-pressure sample injection assembly which comprises a shell, an input pipe is movably connected to the output end of one side of the shell, a connecting pipe is movably connected to one end of the inner wall of the shell, the output end of one side of the connecting pipe is movably connected to the output end of one side of the input pipe, and an embedded pipe is fixedly connected to one end of the inner wall of the connecting pipe. According to the device, through mutual cooperation of the structures, efficient pressurization in the sample injection process is achieved, sample homogenization is facilitated, the accuracy and efficiency of subsequent analysis are improved, meanwhile, the structural design is stable, safety in the use process is guaranteed, and the device is more practical.

Description

Technical Field

[0001] This utility model relates to the field of chromatography technology, specifically a high-pressure injection component for a microchromatographic column. Background Technology

[0002] In the field of chromatographic analysis, microcolumns are widely used in various fields such as drug analysis, environmental monitoring, and food safety due to their high separation efficiency, low sample consumption, and rapid response. However, the high efficiency of microcolumns often depends on precise and stable injection techniques to ensure that samples can enter the column uniformly and without loss for separation and analysis.

[0003] For example, Chinese patent CN219201481U discloses an injection device for liquid chromatography-tandem mass spectrometry, which aims to improve the stability and accuracy of injection. However, while this device can meet the needs of routine injection to a certain extent, its performance is still limited under high-pressure injection conditions. This patent may not have been optimized for high-pressure injection environments, leading to decreased injection stability under high pressure and thus affecting the accuracy of analytical results. Therefore, we propose a micro-chromatographic column high-pressure injection component. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a high-pressure injection assembly for a microchromatographic column, which solves the aforementioned problems.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solution: a high-pressure injection assembly for a microchromatographic column, comprising a housing, an input tube movably connected to one output end of the housing, a connecting tube movably connected to one end of the inner wall of the housing, and an output end of one side of the connecting tube movably connected to the output end of one side of the input tube, an embedded tube fixedly connected to one end of the inner wall of the connecting tube, and a plurality of spiral grooves formed on one end of the inner wall of the embedded tube.

[0006] Preferably, a gear is fixedly connected to the outer wall of one end of the connecting pipe, and the output end of the gear passes through the top of the housing. A power supply module is fixedly connected to one side of the top of the housing. A motor is fixedly connected to the output end of the power supply module away from the housing, and the bottom of the motor is fixedly connected to the top of the housing near the power supply module.

[0007] Preferably, the output end of the motor is fixedly connected to a second gear, and the second gear is meshed with the gear.

[0008] Preferably, a pressurizing pipe is fixedly connected to the output end of the inner wall of the housing near the connecting pipe, and the output end of the pressurizing pipe is movably connected to the output end of the connecting pipe away from the input pipe. A support frame is fixedly connected to the inner wall of the pressurizing pipe near the connecting pipe, and a turbofan is movably connected to the output end of the support frame away from the connecting pipe, with the turbofan output direction away from the input pipe.

[0009] Preferably, the inner wall of the pressurizing tube near the turbofan end has a fan-shaped pressurizing cavity, and the output direction of the fan-shaped pressurizing cavity is consistent with that of the turbofan.

[0010] Preferably, a fixing ring is fixedly connected to the outer wall of the end of the pressurizing tube away from the connecting tube, and several fixing brackets are fixedly connected to the inner wall of the end of the housing near the pressurizing tube. The output end of the fixing bracket is engaged with the outer wall of the fixing ring. An output head is fixedly connected to the output end of the end of the pressurizing tube away from the connecting tube, and the output end of the output head extends through the output end of the housing away from the input tube.

[0011] Preferably, a plurality of mounting bases are fixedly connected to the outer wall of one end of the housing.

[0012] Compared with the prior art, this utility model provides a high-pressure injection assembly for a microchromatographic column, which has the following beneficial effects:

[0013] 1. This high-pressure injection assembly for microchromatographic columns, driven by a motor, rotates the connecting tube and its inner tube, utilizing a spiral groove design to achieve effective mixing and pretreatment of the sample during injection. This rotational motion helps homogenize the sample, improving the accuracy and efficiency of subsequent analyses.

[0014] 2. The high-pressure injection assembly of this microchromatographic column utilizes a turbine fan and a fan-shaped pressurization chamber to generate a powerful airflow or pressure, effectively pressurizing the sample within the pressurization tube and outputting it at high pressure through the output head. This design ensures that the sample enters the microchromatographic column under stable and high pressure, providing reliable injection conditions for analysis and contributing to improved analytical sensitivity and accuracy.

[0015] 3. The high-pressure injection assembly of this microchromatographic column, with its locking ring and the fixing bracket on the inner wall of the housing, along with the convenient installation design of the entire housing via the mounting base, collectively ensures the stability and safety of the pressurized tubing under high pressure. This robust structural design effectively prevents leakage or damage that may occur during high-pressure injection, guaranteeing the safety and reliability of the experiment. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of this utility model;

[0018] Figure 3 This is a side view of the present invention.

[0019] In the diagram: 1. Housing; 2. Input pipe; 3. Connecting pipe; 4. Embedded pipe; 5. Spiral groove; 6. Gear; 7. Power supply module; 8. Motor; 9. Second gear; 10. Pressurizing pipe; 11. Support frame; 12. Turbine fan; 13. Fan-shaped pressurizing chamber; 14. Fixing ring; 15. Fixing bracket; 16. Output head; 17. Mounting base. Detailed Implementation

[0020] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-3 A high-pressure injection assembly for a microchromatographic column includes a housing 1, an input tube 2 movably connected to one output end of the housing 1, a connecting tube 3 movably connected to one end of the inner wall of the housing 1, and an output end of one side of the connecting tube 3 movably connected to the output end of one side of the input tube 2. An embedded tube 4 is fixedly connected to one end of the inner wall of the connecting tube 3, and a plurality of spiral grooves 5 are provided on one end of the inner wall of the embedded tube 4.

[0022] Furthermore, a gear 6 is fixedly connected to the outer wall of one end of the connecting pipe 3, and the top output end of the gear 6 passes through the top of the housing 1. A power supply module 7 is fixedly connected to one side of the top of the housing 1. A motor 8 is fixedly connected to the output end of the power supply module 7 away from the housing 1, and the bottom of the motor 8 is fixedly connected to the top of the housing 1 near the side of the power supply module 7.

[0023] Furthermore, a second gear 9 is fixedly connected to the output end of the motor 8, and the second gear 9 is meshed with the gear 6. The second gear 9 meshes with the gear 6 connected to the outer wall of the connecting pipe 3, thereby driving the connecting pipe 3 and the inner tube 4 to rotate together.

[0024] Furthermore, a pressurizing pipe 10 is fixedly connected to the output end of the inner wall of the housing 1 near the connecting pipe 3, and the output end of the pressurizing pipe 10 is movably connected to the output end of the connecting pipe 3 away from the input pipe 2. A support frame 11 is fixedly connected to the inner wall of the pressurizing pipe 10 near the connecting pipe 3, and a turbofan 12 is movably connected to the output end of the support frame 11 away from the connecting pipe 3, and the output direction of the turbofan 12 is away from the input pipe 2.

[0025] Furthermore, a fan-shaped pressurizing cavity 13 is provided on the inner wall of the pressurizing tube 10 near the turbofan 12, and the output direction of the fan-shaped pressurizing cavity 13 is consistent with that of the turbofan 12. The fan-shaped pressurizing cavity 13 cooperates with the turbofan 12 to further enhance the pressure in this direction, so that the sample is pressurized in the pressurizing tube 10.

[0026] Furthermore, a fixing ring 14 is fixedly connected to the outer wall of the end of the pressurizing pipe 10 away from the connecting pipe 3, and several fixing brackets 15 are fixedly connected to the inner wall of the end of the housing 1 near the pressurizing pipe 10. The output end of the fixing bracket 15 is snapped into the outer wall of the fixing ring 14. An output head 16 is fixedly connected to the output end of the end of the pressurizing pipe 10 away from the connecting pipe 3, and the output end of the output head 16 extends through the output end of the housing 1 away from the input pipe 2.

[0027] Furthermore, a number of mounting bases 17 are fixedly connected to the outer wall of one end of the housing 1, which facilitates the installation of the device in the required position.

[0028] Working principle: First, one side of the component's housing 1 is connected to an external sample source via the input tube 2, ready to receive the sample. The connecting tube 3 connects the input tube 2 to the pressurization tube 10. Simultaneously, the embedded tube 4 and its internal spiral groove 5 provide a preliminary guiding and pre-processing channel for the sample. The power supply module 7 provides power to the motor 8. After the motor 8 starts, its output drives the second gear 9 to rotate. The second gear 9 meshes with the gear 6 connected to the outer wall of the connecting tube 3, thereby driving the connecting tube 3 (including the embedded tube 4) to rotate together. This rotation helps the sample to accelerate its flow within the spiral groove 5. While the sample is fed into the pressurization tube 10, the turbine fan 12 rotates on the support frame 11, generating airflow or pressure in the direction away from the input tube 2. The fan-shaped pressurization chamber 13 cooperates with the turbine fan 12 to further enhance the pressure in this direction, so that the sample is pressurized in the pressurization tube 10. The pressurized sample is output under high pressure through the output head 16, ready to enter the microchromatographic column for subsequent analysis. The fixing ring 14 is engaged with the fixing bracket 15 on the inner wall of the housing 1 to ensure the stability and safety of the pressurization tube 10 under high pressure. The entire housing 1 can be easily installed in the required position through the mounting base 17.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-pressure injection assembly for a microchromatographic column, comprising a housing (1), characterized in that: The output end of the housing (1) is movably connected to the input pipe (2), and the inner wall of the housing (1) is movably connected to the connecting pipe (3). The output end of the connecting pipe (3) is movably connected to the output end of the input pipe (2). The inner wall of the connecting pipe (3) is fixedly connected to the embedded pipe (4), and the inner wall of the embedded pipe (4) is provided with several spiral grooves (5).

2. The high-pressure injection assembly for a microchromatographic column according to claim 1, characterized in that: A gear (6) is fixedly connected to the outer wall of one end of the connecting pipe (3), and the top output end of the gear (6) passes through the top of the housing (1). A power supply module (7) is fixedly connected to one side of the top of the housing (1). A motor (8) is fixedly connected to the output end of the power supply module (7) away from the housing (1), and the bottom of the motor (8) is fixedly connected to the top of the housing (1) near the power supply module (7).

3. The high-pressure injection assembly for a microchromatographic column according to claim 2, characterized in that: The output end of the motor (8) is fixedly connected to a second gear (9), and the second gear (9) is meshed with the gear (6).

4. The high-pressure injection assembly for a microchromatographic column according to claim 1, characterized in that: A pressurizing pipe (10) is fixedly connected to the output end of the inner wall of the housing (1) near the connecting pipe (3), and the output end of the pressurizing pipe (10) is movably connected to the output end of the connecting pipe (3) away from the input pipe (2). A support frame (11) is fixedly connected to the inner wall of the pressurizing pipe (10) near the connecting pipe (3), and a turbofan (12) is movably connected to the output end of the support frame (11) away from the connecting pipe (3), and the output direction of the turbofan (12) is away from the input pipe (2).

5. The high-pressure injection assembly for a microchromatographic column according to claim 4, characterized in that: The pressurizing tube (10) has a fan-shaped pressurizing cavity (13) on the inner wall of the end near the turbofan (12), and the output direction of the fan-shaped pressurizing cavity (13) is consistent with that of the turbofan (12).

6. The high-pressure injection assembly for a microchromatographic column according to claim 4, characterized in that: A fixing ring (14) is fixedly connected to the outer wall of the end of the pressurizing tube (10) away from the connecting tube (3). Several fixing brackets (15) are fixedly connected to the inner wall of the end of the housing (1) near the pressurizing tube (10). The output end of the fixing bracket (15) is snap-fitted to the outer wall of the end of the fixing ring (14). An output head (16) is fixedly connected to the output end of the end of the pressurizing tube (10) away from the connecting tube (3). The output end of the output head (16) extends through the output end of the housing (1) away from the input tube (2).

7. The high-pressure injection assembly for a microchromatographic column according to claim 1, characterized in that: Several mounting bases (17) are fixedly connected to the outer wall of one end of the housing (1).

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