A chromatographic column mounting structure for a liquid chromatograph

Abstract

The utility model discloses a column mounting structure for liquid chromatograph, including chromatograph body still includes: installation mechanism: installation mechanism includes the hose of chromatograph body top outer wall, two the one end of hose is away from chromatograph body and is connected with the connecting barrel, the bottom outer wall of connecting barrel is connected with the elastic sheet, the elastic sheet is annular array and has a plurality of, the outer wall of a plurality of elastic sheet is equipped with first thread groove, the outer wall of elastic sheet is connected with the nut, the inner wall of nut is equipped with second thread groove, one side inner wall of a plurality of elastic sheet is connected with same column pipe, the both sides outer wall of column pipe is close to the seal ring of elastic sheet, the inside installation of column pipe has the connecting pipe. The utility model discloses a column mounting structure for liquid chromatograph has improved the versatility of installation mechanism and improved the stability effect of column in the working process.

Description

Technical Field

[0001] This utility model relates to the field of chromatography column technology, and in particular to a chromatography column mounting structure for a liquid chromatograph. Background Technology

[0002] Liquid chromatography (LC), a key instrument in modern chemical analysis, is widely used in numerous industries such as pharmaceutical development, environmental monitoring, and food safety testing. Its core component, the chromatographic column, is responsible for separating complex samples, thereby achieving accurate qualitative and quantitative analysis. With technological advancements, the performance requirements for LCs across various industries continue to rise, making the importance of the column mounting structure increasingly prominent.

[0003] However, traditional column mounting structures for liquid chromatographs can only accommodate columns with specific outer diameters. When it is necessary to replace a column with a different outer diameter, the entire mounting structure often needs to be replaced. This not only increases the cost of use and the difficulty of operation, but may also affect the performance of the column and the accuracy of the analytical results due to improper installation.

[0004] For example, a liquid chromatograph originally comes with a 10mm outer diameter column, and its mounting structure is customized according to this specification. When the experiment requires changing to a 12mm outer diameter column, the existing mounting structure cannot be directly adapted. Replacing the entire mounting structure not only requires additional investment in purchasing new components, but also necessitates professional installation and debugging, consuming a significant amount of time and effort. Utility Model Content

[0005] This utility model discloses a column mounting structure for liquid chromatographs, aiming to solve the technical problem that traditional column mounting structures for liquid chromatographs can only be adapted to columns with specific outer diameters. When it is necessary to replace the column with a different outer diameter, the entire mounting structure often needs to be replaced. This not only increases the cost and difficulty of operation, but may also affect the performance of the column and the accuracy of the analysis results due to improper installation.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A column mounting structure for a liquid chromatograph includes a chromatograph body and further includes: a mounting mechanism: the mounting mechanism includes a flexible tube located on the top outer wall of the chromatograph body, two of the flexible tubes connected to a connecting cylinder at their ends away from the chromatograph body, an elastic plate connected to the bottom outer wall of the connecting cylinder, multiple elastic plates arranged in a ring array, a first threaded groove formed on the outer wall of the multiple elastic plates, a nut connected to the outer wall of the elastic plates, a second threaded groove formed on the inner wall of the nut, a common column tube connected to one side inner wall of the multiple elastic plates, sealing rings installed on the two outer walls of the column tube near the elastic plates, and a connecting tube installed inside the column tube; and an auxiliary fixing mechanism: the auxiliary fixing mechanism is located on one side inner wall of the chromatograph body.

[0008] In this design, multiple elastic plates are installed on the bottom outer wall of the connecting cylinder. These plates work together to form a circumferential support for the column tube from multiple directions, enhancing the stability of the column tube installation. Simultaneously, the outer wall of the elastic plates has a first threaded groove that engages with a second threaded groove on the inner wall of the nut. When the column tube needs to be installed, it is placed inside the elastic plate. By rotating the nut, it moves along the threaded groove of the elastic plate, thereby squeezing the elastic plate inward and fixing the column tube. This allows for adjustment of the tightness of the elastic plates around the column tube to accommodate columns with different outer diameters, improving the versatility of the installation mechanism.

[0009] In a preferred embodiment, the auxiliary fixing mechanism includes a fixing plate fixed to the inner wall of one side of the chromatograph body. The inner wall of the fixing plate has two limiting grooves. The inner wall of the limiting grooves is connected to two support plates. The two support plates are connected to the same screw. The outer wall of the support plate away from the fixing plate is connected to a clamping plate. The outer wall of the two clamping plates away from the support plate is connected to the same bolt.

[0010] The distance between the two support plates is adjusted by rotating the screw, thereby changing the position of the support plates and thus adjusting the position of the connected clamping plates. This allows for the adaptation and fixing of components of different specifications. Driven by the support plates, the two clamping plates can move closer to each other. When it is necessary to fix the column tube, the column tube is placed between the two clamping plates. The screw is adjusted to make the clamping plates fit tightly against the outer wall of the column tube, providing reliable clamping force. After the clamping plates hold the column tube, the bolts are tightened. The bolts can apply additional pressure to the clamping plates, increasing the friction between the clamping plates and the column tube. Even under complex conditions such as vibration during instrument operation, it can ensure that the clamping plates always clamp the column tube tightly.

[0011] As described above, a column mounting structure for a liquid chromatograph includes a chromatograph body and further includes: a mounting mechanism: the mounting mechanism includes a flexible tube located on the top outer wall of the chromatograph body; two of the flexible tubes are connected to a connecting cylinder at their ends away from the chromatograph body; an elastic plate is connected to the bottom outer wall of the connecting cylinder; multiple elastic plates are arranged in a ring array; a first threaded groove is formed on the outer wall of the multiple elastic plates; a nut is connected to the outer wall of the elastic plates; a second threaded groove is formed on the inner wall of the nut; a column tube is connected to one inner wall of the multiple elastic plates; sealing rings are installed on the two outer walls of the column tube near the elastic plates; and a connecting tube is installed inside the column tube; an auxiliary fixing mechanism: the auxiliary fixing mechanism is located on one inner wall of the chromatograph body. The column mounting structure for a liquid chromatograph provided by this utility model has the technical effects of improving the versatility of the mounting mechanism and improving the stability of the chromatograph column during operation. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of a chromatographic column mounting structure for a liquid chromatograph proposed in this utility model.

[0013] Figure 2 This is a schematic diagram of the mounting mechanism for a chromatographic column mounting structure for a liquid chromatograph, as proposed in this utility model.

[0014] Figure 3 This is a schematic diagram of an auxiliary fixing mechanism for the column mounting structure of a liquid chromatograph proposed in this utility model.

[0015] In the attached diagram: 1. Chromatograph body; 2. Tube; 3. Connecting tube; 4. Elastic sheet; 5. Nut; 6. Connecting tube; 7. Sealing ring; 8. Clamping plate; 9. Column tube; 10. Support plate; 11. Screw; 12. Fixing plate; 13. Bolt. Detailed Implementation

[0016] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and marked in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0017] The column mounting structure for liquid chromatographs disclosed in this utility model is mainly applied to traditional column mounting structures for liquid chromatographs that can only be adapted to columns with specific outer diameters. When it is necessary to replace the column with a different outer diameter, the entire mounting structure often needs to be replaced. This not only increases the cost of use and the difficulty of operation, but may also affect the performance of the column and the accuracy of the analysis results due to improper installation.

[0018] Reference Figure 1 and Figure 2 A column mounting structure for a liquid chromatograph includes a chromatograph body 1 and further includes: a mounting mechanism: the mounting mechanism includes a flexible tube 2 located on the top outer wall of the chromatograph body 1, two flexible tubes 2 connected to a connecting cylinder 3 at their ends away from the chromatograph body 1, an elastic plate 4 connected to the bottom outer wall of the connecting cylinder 3, multiple elastic plates 4 arranged in a ring array, a first threaded groove formed on the outer wall of the multiple elastic plates 4, a nut 5 connected to the outer wall of the elastic plates 4, a second threaded groove formed on the inner wall of the nut 5, a single column tube 9 connected to one side inner wall of the multiple elastic plates 4, sealing rings 7 installed on the two outer walls of the column tube 9 near the elastic plates 4, and a connecting tube 6 installed inside the column tube 9; and an auxiliary fixing mechanism: the auxiliary fixing mechanism is located on one side inner wall of the chromatograph body 1.

[0019] In this design, multiple elastic plates 4 are installed on the bottom outer wall of the connecting cylinder 3, so that the multiple elastic plates 4 work together to form a ring-shaped support for the column tube 9 from multiple directions, which enhances the stability of the column tube 9 installation. At the same time, the outer wall of the elastic plate 4 is provided with a first threaded groove, which is used to cooperate with the second threaded groove on the inner wall of the nut 5. When the column tube 9 needs to be installed, the column tube 9 is placed inside the elastic plate 4. By rotating the nut 5, it moves along the threaded groove of the elastic plate 4, thereby squeezing the elastic plate 4 inward to fix the column tube 9. This allows for adjustment of the tightness of the elastic plate 4 on the column tube 9 to accommodate column tubes 9 with different outer diameters, improving the versatility of the installation mechanism.

[0020] Two hoses 2 are connected to the two ends of the connecting tube 6 respectively. By connecting the two hoses 2 to the two ends of the connecting tube 6 inside the connecting cylinder 3, the solvent can flow.

[0021] Specifically, the elastic plate 4 is made of elastic material and has a conical internal structure. The second threaded groove on the inner wall of the nut 5 matches the first threaded groove on the outer wall of the elastic plate 4. By rotating the nut 5, the tightness of the elastic plate 4 on the column tube 9 can be adjusted to accommodate column tubes 9 with different outer diameters.

[0022] Among them, a rubber pad is provided on one inner wall of the elastic sheet 4; the rubber pad inside the elastic sheet 4 cooperates with the sealing ring 7 to improve the sealing performance.

[0023] Reference Figure 1 and Figure 3 In a preferred embodiment, the auxiliary fixing mechanism includes a fixing plate 12 fixed to the inner wall of one side of the chromatograph body 1. The inner wall of the fixing plate 12 has two limiting grooves. The inner wall of the limiting grooves is connected to two support plates 10. The two support plates 10 are connected to the same screw 11. The outer wall of the support plate 10 away from the fixing plate 12 is connected to a clamping plate 8. The outer wall of the two clamping plates 8 away from the support plate 10 is connected to the same bolt 13.

[0024] In this design, the distance between the two support plates 10 is adjusted by rotating the screw 11, thereby changing the position of the support plates 10 and driving the connected clamping plates 8 to adjust their position, thus achieving the adaptation and fixing of components of different specifications. Under the action of the support plates 10, the two clamping plates 8 can move closer to each other. When it is necessary to fix the column tube 9, the column tube 9 is placed between the two clamping plates 8, and the screw 11 is adjusted to make the clamping plates 8 fit tightly against the outer wall of the column tube 9, providing reliable clamping force. After the clamping plates 8 clamp the column tube 9, the bolt 13 is tightened. The bolt 13 can apply additional pressure to the clamping plates 8, increasing the friction between the clamping plates 8 and the column tube 9. Even under complex conditions such as vibration during instrument operation, it can be ensured that the clamping plates 8 always clamp the column tube 9.

[0025] The screw 11 has a bidirectional thread structure; by rotating the screw 11, the two support plates 10 move towards each other, thereby fixing the column tube 9.

[0026] Specifically, the clamp 8 has an elliptical structure, and anti-slip textures are provided on the outer wall of one side of the clamp 8 that is attached to the column tube 9; the clamp 8 can better fit the column tube 9.

[0027] Working principle: In use, first rotate screw 11. Since screw 11 has a bidirectional thread structure, rotating screw 11 will cause the two support plates 10 to move towards each other in the limiting groove on the inner wall of the fixed plate 12, thereby driving the connected clamping plate 8 to adjust its position. At this time, by placing the column tube 9 between the two clamping plates 8, continue to adjust screw 11 to make the clamping plate 8 tightly fit the outer wall of the column tube 9, providing reliable clamping force for the column tube 9. Finally, tighten bolt 13. Bolt 13 applies additional pressure to clamping plate 8, increasing the friction between clamping plate 8 and column tube 9, ensuring that the column tube 9 can always be stably fixed during the operation of the instrument, even in complex situations such as vibration. At this time, by placing the column tube 9 inside the multiple elastic plates 4, by rotating nut 5, since the second thread groove on the inner wall of nut 5 matches the first thread groove on the outer wall of elastic plate 4, nut 5 will move along... As the threaded groove of the elastic plate 4 moves, the nut 5 squeezes the elastic plate 4 during its movement, causing the elastic plate 4 to contract inward and gradually tighten the column tube 9 until a suitable tightness is achieved, thus fixing the column tube 9 on the mounting mechanism. This allows for adjustment of the clamping force on the column tube 9, adapting to column tubes of different outer diameters and improving the versatility of the mounting mechanism. Simultaneously, the rubber gasket on the inner wall of the elastic plate 4 cooperates with the sealing rings 7 installed on the outer walls of the column tube 9 near both sides of the elastic plate 4, thereby improving the sealing of the connection and preventing liquid leakage. At this time, by connecting the two hoses 2 to the two ends of the connecting pipe 6, which is located inside the column tube 9, when the chromatograph is started, the solvent flows out from the chromatograph body 1, enters the connecting pipe 6 through the hoses 2, and then flows into the column tube 9, allowing the solvent to circulate throughout the system and providing the mobile phase for subsequent chromatographic analysis.

[0028] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

Claims

1. A column mounting structure for a liquid chromatograph, comprising a chromatograph body (1), characterized in that, Also includes: Installation mechanism: The installation mechanism includes a flexible tube (2) located on the top outer wall of the chromatograph body (1), and a connecting tube (3) connected to one end of the two flexible tubes (2) away from the chromatograph body (1). An elastic plate (4) is connected to the bottom outer wall of the connecting tube (3). There are multiple elastic plates (4) arranged in a ring array. The outer wall of the multiple elastic plates (4) is provided with a first threaded groove. The outer wall of the elastic plate (4) is connected with a nut (5). The inner wall of the nut (5) is provided with a second threaded groove. The inner wall of one side of the multiple elastic plates (4) is connected with the same column tube (9). The outer walls of the column tube (9) near the two sides of the elastic plate (4) are equipped with sealing rings (7). A connecting tube (6) is installed inside the column tube (9). Auxiliary fixation mechanism: The auxiliary fixation mechanism is located on one inner wall of the chromatograph body (1).

2. The column mounting structure for a liquid chromatograph according to claim 1, characterized in that, The two hoses (2) are respectively connected to the two ends of the connecting pipe (6).

3. The column mounting structure for a liquid chromatograph according to claim 1, characterized in that, The elastic sheet (4) is made of elastic material and has a conical internal structure. The second threaded groove on the inner wall of the nut (5) matches the first threaded groove on the outer wall of the elastic sheet (4).

4. The column mounting structure for a liquid chromatograph according to claim 3, characterized in that, A rubber pad is provided on one side of the inner wall of the elastic sheet (4).

5. The column mounting structure for a liquid chromatograph according to claim 1, characterized in that, The auxiliary fixing mechanism includes a fixing plate (12) fixed to the inner wall of one side of the chromatograph body (1). The inner wall of the fixing plate (12) has two limiting grooves. The inner wall of the limiting grooves is connected to two support plates (10). The two support plates (10) are connected to the same screw (11). The outer wall of the support plate (10) away from the fixing plate (12) is connected to a clamping plate (8). The outer wall of the two clamping plates (8) away from the support plate (10) is connected to the same bolt (13).

6. The column mounting structure for a liquid chromatograph according to claim 5, characterized in that, The screw (11) has a bidirectional thread structure.

7. The column mounting structure for a liquid chromatograph according to claim 5, characterized in that, The clamp (8) has an elliptical structure, and the clamp (8) is attached to the outer wall of one side of the column tube (9) with anti-slip texture.

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