A splitter for liquid chromatography system based on pipeline back pressure principle

Abstract

The utility model discloses a kind of shunt for liquid chromatography system based on pipeline back pressure principle, including outer cover;Trunk pipeline, trunk pipeline is arranged in the inside of outer cover;Two-way adapter, two-way adapter is arranged in the inside of outer cover, the two-way adapter is used to connect the trunk pipeline of different inner diameter;Inlet, inlet is arranged at the right side outside outer cover;Flow compensation mouth, flow compensation mouth is arranged at the right side outside outer cover, and flow compensation mouth is located at the right side of inlet.In the above scheme, by adopting the pipeline combination of different inner diameter, relying on pipeline back pressure principle, the stable shunt of liquid is realized, simple structure, easy to manufacture and assemble, reduce manufacturing cost, at the same time, by optimizing pipeline design and material selection, to improve the accuracy and reliability of the analysis result of liquid chromatography systemIn addition, by adopting special sealing design and cleaning process, effectively prevent liquid leakage and blockage, ensure the normal operation of liquid chromatography system.

Description

Technical Field

[0001] This utility model relates to the field of flow splitter technology, and more specifically, to a flow splitter for a liquid chromatography system based on the principle of pipeline back pressure. Background Technology

[0002] Existing liquid chromatography systems typically employ splitters based on the back pressure principle. These splitters are usually composed of tubing of varying inner diameters, relying on back pressure within the tubing to stably separate the liquid. Specifically, when liquid flows into the splitter's inlet, the different resistances exerted by the tubing of varying inner diameters create varying pressures within these tubing sections. These pressure differences cause the liquid to be stably divided into two or more portions at the splitter's outlet.

[0003] While existing back-pressure-based splitters can achieve efficient and stable liquid splitting to some extent, they still have some problems and drawbacks. First, existing splitters are typically complex, requiring multiple pipes of different inner diameters, which increases both manufacturing and assembly difficulty and production costs. Second, the splitting effect of existing splitters can be affected by factors such as liquid flow rate, viscosity, and temperature, leading to unstable splitting ratios and thus affecting the analytical results of the liquid chromatography system. Finally, existing splitters may suffer from problems such as liquid leakage and blockage, which can not only affect the normal operation of the liquid chromatography system but also lead to errors in analytical results. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a splitter for a liquid chromatography system based on the principle of pipeline back pressure, so as to solve the problem that the existing splitter has a complex structure and is easily affected by factors such as liquid flow rate, viscosity and temperature, resulting in unstable split ratio.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a splitter for a liquid chromatography system based on the principle of pipeline back pressure, comprising...

[0006] Outer cover;

[0007] The main pipeline is located inside the outer casing;

[0008] A two-way adapter is installed inside the outer casing and is used to connect main pipelines with different inner diameters.

[0009] An entrance is located on the right side of the exterior of the outer casing;

[0010] A flow compensation port is provided on the right side of the outer casing, and the flow compensation port is located on the right side of the inlet;

[0011] Branch pipes, wherein the branch pipes are located inside the outer casing;

[0012] T-connector;

[0013] The diversion port and the collection port are both located on the left side of the outer cover.

[0014] The main pipeline is made of stainless steel with an inner diameter of 0.04 mm for 10m and an inner diameter of 0.02 mm for 2m.

[0015] The branch pipeline is selected as a polyetheretherketone (PEEK) pipeline with an inner diameter of 0.007 mm and a diameter of 150 mm.

[0016] In the main pipeline, the 0.04mm inner diameter pipe is connected to the inlet pipe and flow compensation port via a tee adapter. One end of the 0.02mm pipe in the main pipeline is connected to the 0.04mm pipe via a two-way adapter, and the other end is connected to the collection port. One end of the branch pipeline is connected to the 0.04mm pipe and inlet pipe in the main pipeline via a tee adapter, and the other end is connected to the flow compensation port and the diversion port via a tee adapter.

[0017] The beneficial effects of the above-mentioned technical solution of this utility model are as follows:

[0018] In the above scheme, by using a combination of pipes with different inner diameters and relying on the principle of pipe back pressure, stable liquid splitting is achieved. The structure is simple, easy to manufacture and assemble, and reduces manufacturing costs. At the same time, by optimizing pipe design and material selection, the splitting ratio is made more stable, thereby improving the accuracy and reliability of the analysis results of the liquid chromatography system. In addition, by adopting special sealing design and cleaning process, liquid leakage and blockage are effectively prevented, ensuring the normal operation of the liquid chromatography system. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the outer casing of this utility model;

[0021] Figure 3 This is a three-dimensional assembly drawing of the overall device of this utility model.

[0022] [Figure Labels]

[0023] 1. Outer casing; 2. Main pipeline; 3. Two-way adapter; 4. Inlet; 5. Flow compensation port; 6. Branch pipeline; 7. Three-way adapter; 8. Diversion port; 9. Collection port. Detailed Implementation

[0024] To make the technical problems, technical solutions and advantages of this utility model clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0025] As attached Figure 1 To be continued Figure 3 An embodiment of this utility model provides a splitter for a liquid chromatography system based on the principle of pipeline back pressure, including...

[0026] Outer cover 1;

[0027] Main pipeline 2 is located inside the outer casing 1;

[0028] Two-way adapter 3 is located inside the outer cover 1 and is located on the right side of the main pipeline 2;

[0029] Entrance 4 is located on the right side outside the outer cover 1;

[0030] Flow compensation port 5 is located on the right side of the outer cover 1, and is located on the right side of the inlet 4.

[0031] Branch pipe 6 is located inside the outer casing 1;

[0032] 7-way adapter;

[0033] Diverting port 8 and collecting port 9 are both located on the left side of the outer cover 1.

[0034] Among them, the main pipeline 2 is made of stainless steel with an inner diameter of 0.04mm for 10m and 0.02mm for 2m. The materials of the outer cover 1 and the main pipeline 2 have good chemical corrosion resistance and high temperature stability.

[0035] Among them, branch pipe 6 is selected as a polyetheretherketone pipe with an inner diameter of 0.007mm and a diameter of 150mm.

[0036] In this system, the 0.04mm inner diameter pipe in main pipeline 2 is connected to the inlet 4 and flow compensation port 5 via a tee adapter 7. One end of the 0.02mm pipe in main pipeline 2 is connected to the 0.04mm pipe via a two-way adapter 3, and the other end is connected to the collection port 9. One end of branch pipeline 6 is connected to the 0.04mm pipe in main pipeline 2 and the inlet 4 via a tee adapter 7, and the other end is connected to the flow compensation port 5 and the branch port 8 via a tee adapter 7. Stable liquid flow is achieved through the principle of pipeline back pressure. That is, when liquid flows through main pipeline 2, the back pressure is low due to the larger inner diameter of main pipeline 2, resulting in a faster liquid flow velocity; when liquid flows through branch pipeline 6, the back pressure is high due to the smaller inner diameter of branch pipeline 6, resulting in a slower liquid flow velocity, thus achieving stable liquid flow.

[0037] By using a 20-degree stainless steel blade ring to seal the joints of the splitter and by strictly controlling the cleaning process during manufacturing, liquid leakage and blockage are effectively prevented, ensuring the normal operation of the liquid chromatography system.

[0038] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0039] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0040] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A splitter for a liquid chromatography system based on the principle of pipeline back pressure, characterized in that, include Outer cover (1); Main pipeline (2), which is located inside the outer casing (1); Two-way adapter (3), the two-way adapter (3) is located inside the outer cover (1), and the two-way adapter (3) is used to connect main pipelines (2) with different inner diameters. The entrance (4) is located on the right side outside the outer cover (1); Flow compensation port (5) is located on the right side outside the outer cover (1) and above the inlet (4); Branch pipe (6), the branch pipe (6) is located inside the outer casing (1); T-connector (7); The diversion port (8) and the collection port (9) are both located on the left side of the outer cover (1).

2. The splitter for a liquid chromatography system based on the pipeline back pressure principle according to claim 1, characterized in that, The main pipeline (2) is selected from stainless steel pipelines with an inner diameter of 0.04 mm for 10 m and an inner diameter of 0.02 mm for 2 m.

3. The splitter for a liquid chromatography system based on the pipeline back pressure principle according to claim 1, characterized in that, The branch pipe (6) is selected as a polyetheretherketone pipe with an inner diameter of 0.007 mm and a diameter of 150 mm.

4. The splitter for a liquid chromatography system based on the pipeline back pressure principle according to claim 1, characterized in that, The main pipeline (2) with an inner diameter of 0.04 mm is connected to the inlet (4) pipeline and the flow compensation port (5) through a three-way adapter (7). One end of the 0.02 mm pipeline in the main pipeline (2) is connected to the 0.04 mm pipeline through a two-way adapter (3), and the other end is connected to the collection port (9). One end of the branch pipeline (6) is connected to the 0.04 mm pipeline and the inlet (4) pipeline in the main pipeline (2) through a three-way adapter (7), and the other end is connected to the flow compensation port (5) and the diversion port (8) through a three-way adapter (7).

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