Pipeline port of high performance liquid chromatography
By using a sealing base with multiple annular raised structures interposed with inner tubes in the pipeline ports of the liquid chromatography, the liquid leakage problem caused by poor connection is solved, and efficient liquid chromatography analysis and easy-to-maintain port structure are achieved.
Patent Information
- Application Number
- CN202421343371.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-13
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-06-13
AI Technical Summary
In liquid chromatography, poor connection of pipeline ports leads to liquid leakage, affecting the analysis effect and user experience.
The sealing base with a multiple annular projection structure inserted with an inner tube is pressed into the cylindrical press ring structure by mechanical force, so that the annular projection of the sealing base is deformed, and the inner tube is jammed to achieve multiple sealing and fixing.
It effectively avoids liquid leakage, ensures the separation effect of liquid chromatography, and facilitates disconnection and reuse of the port structure.
Smart Images
Figure CN222992451U_ABST
Abstract
Description
Technical Field
[0001] This patent relates to a pipeline port of high performance liquid chromatography. Background Art
[0002] In liquid chromatography, the flow path requires a suitable port structure for mutual connection to transport liquids. To ensure good separation effect, the port structure should be firmly combined, without leakage and without generating additional volume. To cope with maintenance and actual analysis requirements, the port structure of the pipeline should be convenient for pipeline disconnection and can withstand a certain number of repeated uses. In practical applications, if additional dead volume is generated during the connection of pipeline ports, it will cause poor chromatographic separation effect; if there is insufficient contact between the port connection surfaces or the port is deformed due to frequent replacement of components, it will cause liquid leakage, affecting the actual analysis effect and user experience. Summary of the Invention
[0003] In order to better avoid the leakage problem caused by poor connection of the two ports at the connection in high performance liquid chromatography, the present utility model discloses a pipeline port of high performance liquid chromatography.
[0004] The present utility model presses a sealing base with a multi-ring convex structure inserted with an inner tube into a cylindrical pressing ring structure by using mechanical force; wherein, the multi-ring convex sealing base is made of deformable materials, including metal, PEEK material, and polytetrafluoro material, the cylindrical pressing ring is made of corrosion-resistant hard metal or ceramic material, and the inner tube is a plastic inner tube, a metal inner tube or other combined structures. For the sealing base, there is a through hole in the central axis direction, and the shape of the sealing port contact surface is circular or polygonal to achieve communication at the port. Since the diameter of the sealing base is slightly larger than the inner diameter of the cylindrical pressing ring structure, when the multi-ring convex sealing base is pressed into the cylindrical pressing ring, the ring protrusions of the sealing base are deformed, and then bite the inner tube, forming multiple seals between the inner tube and the sealing base on the one hand, and also forming multiple fixations on the other hand. Through the above description, the pipeline port of the high performance liquid chromatography described in this patent is constituted.
[0005] This port can have a ring protrusion or a pre-compressed metal ring at one end. Through the fastening force of a screw or the force of a spring, and other forms of force conduction to the protruding structure, the base of the sealing base is fastened to the connecting piece to be connected. Description of the Drawings
[0006] Figure 1 It is a longitudinal section of each component part of a pipeline port of high performance liquid chromatography provided by the present utility model in an unassembled state. Detailed Embodiment
[0007] The following further describes the present utility model with reference to the drawings.
[0008] Figure 1 The longitudinal section of each part component of the port structure in the unassembled state is shown, including a multi-ring convex sealing base 1, a cylindrical pressing ring 2, and an inner tube 3. The multi-ring convex sealing base is made of deformed materials, including metal, PEEK material, and polytetrafluoro material. The cylindrical pressing ring is made of corrosion-resistant hard metal or ceramic material to ensure sufficient hardness. The inner tube is a plastic inner tube, a metal inner tube, or other combined structures. Before assembling the inner tube, for the sealing base, there is a through hole in the central axis direction, and the shape of the sealing port contact surface is circular or polygonal. During assembly, the inner tube passes through the cylindrical pressing ring and the sealing base in sequence, and the cylindrical pressing ring is moved towards the sealing base by mechanical force, that is, a sealing base with a multi-ring convex structure inserted with an inner tube is pressed into a cylindrical pressing ring by mechanical force. The cylindrical pressing ring squeezes the multi-ring convex part of the sealing base, causing the ring convex to deform, and then biting the inner tube to achieve the effect of sealing and fixing the inner tube and the sealing base. There can be a ring convex or a pre-compressed metal ring at one end of the port. Through the tightening force of a screw or the force of a spring, and other forms of force conduction to the convex structure, the base of the sealing base is tightened with the connecting part to be connected.
[0009] The present utility model is not limited to the above embodiments. Any method similar to the present utility model for realizing the pipeline port of high performance liquid chromatography is within the protection scope of the present utility model.
Claims
1. A pipeline port for high performance liquid chromatography, characterized in that: It includes a sealing base with multiple annular protrusions, a cylindrical pressure ring and an inner tube. The inner tube passes through the cylindrical pressure ring and the sealing base in sequence, and the cylindrical pressure ring squeezes the multiple annular protrusions of the sealing base. The sealing base with multiple annular protrusions and the cylindrical pressure ring are connected and fixed by mechanical pressure, thereby achieving sealing between the sealing base with multiple annular protrusions and the inner tube, and fastening the pipeline port to the end to be connected.
2. The pipeline port of high performance liquid chromatography according to claim 1, characterized in that: The sealing port contact surface of the sealing base is circular or polygonal, with a through hole in the middle to achieve connectivity at the port.
3. The pipeline port of high performance liquid chromatography according to claim 1, characterized in that: The pipeline port is fastened to the end to be connected by screws, springs or other mechanical forces to achieve flow path connectivity, sealing and prevent leakage.
4. The pipeline port of high performance liquid chromatography according to claim 1, characterized in that: The inner diameter of the cylindrical pressure ring is smaller than the diameter of the multiple annular protrusion sealing base.
5. The pipeline port of high performance liquid chromatography according to claim 1, characterized in that: The sealing base is made of a deformable material, including metal, PEEK material, and polytetrafluoroethylene material.
6. The pipeline port of high performance liquid chromatography according to claim 1, characterized in that: The cylindrical pressure ring is made of corrosion-resistant hard metal or ceramic material.
7. The pipeline port of high performance liquid chromatography according to claim 1, characterized in that: The inner tube is a plastic inner tube, a metal inner tube or other combined structures.