High performance liquid phase mobile phase inlet filter protection device

Abstract

The utility model belongs to the technical field of high performance liquid chromatographs, and discloses a high performance liquid mobile phase inlet filter protection device which comprises a solvent bottle cap, a straight triangular prism protection sleeve arranged below the solvent bottle cap, and an upper cover arranged outside the straight triangular prism protection sleeve through a hinge, the straight triangular prism protective sleeve and the upper cover are both made of transparent acrylic materials, through the design of the straight triangular prism protective sleeve and the upper cover, when a mobile phase needs to be added or replaced, an operator opens the upper cover and holds the solvent bottle cover by hand to enable the inlet filter to be aligned with the opening and stably insert the solvent bottle cover, and in the process, the solvent bottle cover is opened. The high-performance liquid phase inlet pipe and the inlet filter are always located in a closed space of the straight triangular prism protective sleeve, the protective sleeve effectively isolates dust, particles and other pollutants in the external environment, a physical barrier is formed, the risk that the filter is polluted is greatly reduced, and therefore the cleanliness of the filter is guaranteed, and the service life of the filter is prolonged. The stability of an instrument sampling system and the accuracy of an analysis result are maintained.

Description

Technical Field

[0001] This utility model relates to the field of high performance liquid chromatography (HPLC) technology, and in particular to a protection device for the inlet filter of a high performance liquid mobile phase. Background Technology

[0002] The inlet filter of the high-performance liquid chromatograph is connected to the solvent bottle. Under the action of the high-pressure pump of the chromatograph, the mobile phase is delivered to the inside of the chromatograph through the inlet filter and the inlet pipe. The inlet filter and the inlet pipe should be kept clean throughout the process to avoid damage from violent force.

[0003] In the process of realizing this invention, the inventors discovered that the prior art has at least the following problems: if it is necessary to add or replace the mobile phase in the solvent bottle, the bottle cap needs to be opened to remove the inlet tube and the inlet filter. While waiting to reinstall the solvent bottle, the operator can only hold the accessible part of the inlet tube to avoid the inlet filter from coming into contact with any objects. However, the inlet filter can only be exposed to the air, and there is also a risk of being contaminated by dust and other impurities.

[0004] Therefore, the aforementioned technical problems need to be solved. Utility Model Content

[0005] To overcome the shortcomings of the existing technology, the basic technical solution proposed by this utility model is as follows: a high-efficiency liquid mobile phase inlet filter protection device, including a solvent bottle cap, a straight triangular prism protective sleeve provided below the solvent bottle cap, and an upper cover installed on the outside of the straight triangular prism protective sleeve by a hinge, wherein the straight triangular prism protective sleeve and the upper cover are both made of transparent acrylic material.

[0006] Preferably, the right triangular prism protective sleeve is a right triangular prism, with the top and bottom of the right triangular prism protective sleeve being equilateral triangles, and the three outer sides being isosceles trapezoids.

[0007] Preferably, the top surface of the right triangular prism protective sleeve has an opening that matches the top cover, and the bottom surface of the right triangular prism protective sleeve is sealed.

[0008] Preferably, a circular hole is provided at the center of the solvent bottle cap, and a high-efficiency liquid phase inlet pipe is installed at the circular hole.

[0009] Preferably, an inlet filter is installed at the bottom of the high-efficiency liquid phase inlet pipe.

[0010] Preferably, the top cover can be closed by a hinge to prevent dust and other impurities from entering the protective sleeve of the straight triangular prism.

[0011] The beneficial effects of this utility model are:

[0012] With the design of the straight triangular prism protective sleeve and top cover, when the mobile phase needs to be added or replaced, the operator opens the top cover, holds the solvent bottle cap, aligns the inlet filter with the opening, and inserts it smoothly. During this process, the high-performance liquid chromatography inlet tube and the inlet filter are always within the closed space of the straight triangular prism protective sleeve. This protective sleeve effectively isolates dust, particles and other contaminants from the external environment, forming a physical barrier, which greatly reduces the risk of filter contamination, thereby ensuring its cleanliness and maintaining the stability of the instrument's sample introduction system and the accuracy of the analysis results.

[0013] Furthermore, this device is easy to use, can be operated by a single person, has a simple structure, low cost, is easy to clean, and can be reused. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the straight triangular prism protective sleeve and the top cover of this utility model;

[0016] Figure 3 This is a front view schematic diagram of the present utility model;

[0017] Figure 4 This is a schematic diagram of the overall cross-sectional structure of this utility model;

[0018] Explanation of reference numerals in the attached figures:

[0019] 1. Solvent bottle cap; 2. Straight triangular prism protective sleeve; 3. Top cap; 4. High-performance liquid chromatography (HPLC) inlet pipe; 5. Inlet filter. Detailed Implementation

[0020] The following will be combined with the appendix Figure 1 To be continued Figure 4 The technical solutions in the embodiments of this utility model are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0021] It should be noted that, in the embodiments of this utility model, the directions shown in the accompanying drawings shall prevail, such as front and back. Figure 1 For the sake of accuracy, the specific details should be as follows: Figure 1 The left side is the front. Figure 1 The right side is the rear; at the same time, as Figure 2 As shown, the horizontal direction is roughly defined as left and right, and the vertical direction is defined as up and down. If a specific orientation changes, the directional indication will also change accordingly.

[0022] Example 1: Please refer to Figure 1 - Figure 4 As shown, this embodiment provides a high-efficiency liquid chromatography (HPLC) mobile phase inlet filter protection device, including a solvent bottle cap 1, a straight triangular prism protective sleeve 2 disposed below the solvent bottle cap 1, and an upper cover 3 installed on the outside of the straight triangular prism protective sleeve 2 by a hinge. The hinge is a small hinge and is also made of acrylic material. Its two sides are respectively pasted to the outer walls of the straight triangular prism protective sleeve 2 and the upper cover 3. Both the straight triangular prism protective sleeve 2 and the upper cover 3 are made of transparent acrylic material. The solvent bottle cap 1, HPLC inlet pipe 4 and inlet filter 5 mentioned in this article are all prior art, and this utility model will not be described in detail.

[0023] This invention addresses the issue that in existing high-performance liquid chromatographs (HPLC) systems, when adding or changing the mobile phase in the solvent bottle, the solvent bottle cap 1 must be opened to remove the HPLC inlet tube 4 and the inlet filter 5. During this process, the operator holds the accessible portion of the HPLC inlet tube 4 while waiting for reinstallation, exposing the inlet filter 5 to air and posing a risk of contamination by dust and other impurities. Therefore, the design of the straight triangular prism protective sleeve 2 and the top cover 3 allows the operator to open the top cover 3 and hold the solvent bottle cap 1 to align the inlet filter 5 with the opening for smooth insertion when adding or changing the mobile phase. Throughout this process, the HPLC inlet tube 4 and the inlet filter 5 remain within the enclosed space of the straight triangular prism protective sleeve 2. This protective sleeve effectively isolates dust, particles, and other contaminants from the external environment, forming a physical barrier that significantly reduces the risk of filter contamination, thereby ensuring its cleanliness and maintaining the stability of the instrument's sample introduction system and the accuracy of the analytical results.

[0024] Example 2: As Figure 2 - Figure 4 As shown, the right triangular prism protective sleeve 2 is a right triangular prism with a triangular structure that is narrower at the top and wider at the bottom. This structure is stable and prevents the equipment from tipping over during use. The acrylic material also facilitates observation of the interior. The top and bottom of the right triangular prism protective sleeve 2 are both equilateral triangles, and the three outer sides are isosceles trapezoids. The top surface of the right triangular prism protective sleeve 2 has an opening that matches the top cover 3, and the bottom surface is sealed. A circular hole is provided at the center of the solvent bottle cap 1, and a high-efficiency liquid chromatography (HPLC) inlet pipe 4 is installed at this hole. An inlet filter 5 is installed at the bottom of the HPLC inlet pipe 4. The top cover 3 can be closed with a hinge to prevent dust and other impurities from entering the right triangular prism protective sleeve 2. When the equipment is not in use, the top cover 3 can be closed to prevent dust and other impurities from entering the right triangular prism protective sleeve 2 and maintain internal cleanliness.

[0025] It is worth noting that the internal height of the straight triangular prism protective sleeve 2 is greater than the length of the high-efficiency liquid phase inlet pipe 4. This ensures that the inlet filter 5 and the high-efficiency liquid phase inlet pipe 4 remain suspended and do not come into contact with any objects, while also isolating them from the outside air. The width of the top opening is smaller than the diameter of the solvent bottle cap 1 but larger than the diameter of the inlet filter 5. This ensures that the inlet filter 5 can enter smoothly without contacting any objects, while also allowing the solvent bottle cap 1 to be naturally supported. The solvent bottle cap 1 is close to the size of the top opening, which can partially isolate it from the outside air.

[0026] Work steps:

[0027] First, open the top cover 3. Holding the solvent bottle cap 1, align the inlet filter 5 with the opening and slowly insert it into the straight triangular prism protective sleeve 2. After the lower edge of the solvent bottle cap 1 is in contact with the upper edge of the straight triangular prism protective sleeve 2, the inlet filter 5 and the high-performance liquid chromatography inlet tube 4 will be naturally suspended inside the straight triangular prism protective sleeve 2. This completes the mobile phase addition or replacement operation. After use, holding the solvent bottle cap 1, slowly pull it out of the straight triangular prism protective sleeve 2. Finally, rinse the inside of the straight triangular prism protective sleeve 2 with running water. After drying, close the top cover 3 and store it properly for future use. When not in use, closing the top cover 3 can reduce the entry of dust and other contaminants into the straight triangular prism protective sleeve 2.

[0028] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A high-efficiency liquid mobile phase inlet filter protection device, comprising a solvent bottle cap (1), characterized in that: The solvent bottle cap (1) is provided with a straight triangular prism protective sleeve (2) below it, and an upper cover (3) is installed on the outside of the straight triangular prism protective sleeve (2) by a hinge. Both the straight triangular prism protective sleeve (2) and the upper cover (3) are made of transparent acrylic material.

2. The high-efficiency liquid mobile phase inlet filter protection device according to claim 1, characterized in that: The right triangular prism protective sleeve (2) is a right triangular prism. The top and bottom of the right triangular prism protective sleeve (2) are both equilateral triangles, and the three outer sides are isosceles trapezoids.

3. The high-efficiency liquid mobile phase inlet filter protection device according to claim 2, characterized in that: The top surface of the right triangular prism protective sleeve (2) is provided with an opening that matches the top cover (3), and the bottom surface of the right triangular prism protective sleeve (2) is sealed.

4. The high-efficiency liquid mobile phase inlet filter protection device according to claim 3, characterized in that: The solvent bottle cap (1) has a circular hole at its center, and a high-efficiency liquid phase inlet pipe (4) is installed at the circular hole.

5. The high-efficiency liquid mobile phase inlet filter protection device according to claim 4, characterized in that: An inlet filter (5) is installed at the bottom of the high-efficiency liquid inlet pipe (4).

6. The high-efficiency liquid mobile phase inlet filter protection device according to claim 1, characterized in that: The top cover (3) can be closed by a hinge, thereby preventing dust and impurities from entering the straight triangular prism protective sleeve (2).

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