Direct connection solvent effect eliminator

Abstract

The utility model relates to the technical field of chromatographic analysis, in particular to a direct connection solvent effect eliminator which comprises an upper connecting column, a lower connecting column arranged on the upper connecting column and a tail pipe arranged in the lower connecting column, a sliding cavity is formed in the upper connecting column, a connecting pipe is movably arranged in the sliding cavity, and the tail pipe is arranged in the sliding cavity. According to the direct-connection solvent effect eliminator, the sliding cavity is formed in the upper connecting column, so that the connecting pipe on the threaded part can slide in the sliding cavity under the action of the moving assembly, and the connecting pipe can slide in the sliding cavity more easily and stably. The connecting pipe moves in the sliding cavity, so that when the leakage length of the pipeline needs to be adjusted, free adjustment can be conducted, the use limitation is greatly reduced, the arranged balls can replace the connecting pipe to make contact with the sliding cavity, sliding of the connecting pipe can be facilitated, the wetting blocks are arranged at the balls, and therefore the leakage length of the pipeline can be adjusted conveniently. And the balls can keep a lubricating effect for a long time, and the service life of the whole device can be prolonged.

Description

Technical Field

[0001] This utility model relates to the field of chromatographic analysis technology, specifically to a direct-coupled solvent effect eliminator. Background Technology

[0002] In chromatographic analysis, such as high-performance liquid chromatography, solvent effects may cause problems such as peak shape distortion and retention time changes. Therefore, a direct-connected solvent effect eliminator is needed. Its main purpose is to reduce or eliminate solvent effects. Through special design, the difference between the injection solvent and the mobile phase is adjusted so that the sample can be more evenly distributed when entering the chromatographic column, avoiding adverse effects caused by differences in solvent composition and properties.

[0003] However, in practical use, most of the existing direct-connect solvent effect eliminators have fixed threaded connections. This requires replacement when adjusting the pipeline leakage length to accommodate the connection joints. This results in the threaded connections being too limited in variety, thus increasing the limitations of their use. Therefore, we propose a direct-connect solvent effect eliminator. Utility Model Content

[0004] One of the technical problems to be solved in this application is: how to design a direct-drive solvent effect eliminator for a threaded component that can freely expand and contract.

[0005] To address the aforementioned technical problems, embodiments of this application provide a direct-connected solvent effect eliminator, comprising an upper connecting column, a lower connecting column disposed on the upper connecting column, and a tail tube disposed inside the lower connecting column, and further comprising:

[0006] A sliding cavity, wherein the sliding cavity is formed inside the upper connecting column;

[0007] A connecting pipe is movably disposed inside the sliding cavity for free extension and retraction adjustment;

[0008] A movable component is provided on the connecting tube to make the sliding of the connecting tube easier and more stable inside the sliding cavity.

[0009] In some embodiments, a circular groove is formed on the outer surface of the connecting pipe, and the moving component includes a wetting block movably disposed on the inner wall of the circular groove. A ball is movably disposed on the side of the wetting block, and the outer surface of the ball is movably disposed on the inner wall of the sliding cavity.

[0010] In some embodiments, a spring is provided on the inner wall of the circular groove, with the two ends of the spring respectively disposed on the side of the wetted block and the end face of the inner wall of the circular groove.

[0011] In some embodiments, an adhesion ring is sleeved on the outer surface of the connecting tube, a contact ring is provided on the inner wall of the sliding cavity, and the end face of the adhesion ring is movably disposed on the outer surface of the contact ring.

[0012] In some embodiments, a mixing chamber is provided inside the upper connecting column near the end face of the connecting pipe, and a separation chamber communicating with the mixing chamber is provided inside the lower connecting column near the end face of the tail pipe. Both the mixing chamber and the separation chamber are provided with multiple filter plates.

[0013] In some embodiments, a cutting ring is movably provided on the end face of the connecting tube away from the upper connecting post, and a threaded tube is provided on the end face of the lower connecting post near the upper connecting post. The inner wall of the upper connecting post is threaded and the inner wall of the upper connecting post is threaded to the outer surface of the threaded tube.

[0014] In some embodiments, the connecting pipe has an annular groove on its end face near the blade ring, and the end face of the blade ring is provided with a protective ring, which is movably disposed on the inner wall of the annular groove.

[0015] This utility model has at least the following beneficial effects:

[0016] 1. By opening a sliding cavity inside the upper connecting column, the connecting pipe on the threaded part can move inside the sliding cavity under the action of the moving component, so that it can be freely adjusted when the exposed length of the pipeline needs to be adjusted, greatly reducing the limitations of use;

[0017] 2. The ball bearings can replace the contact between the connecting pipe and the sliding cavity, which facilitates the sliding of the connecting pipe. Furthermore, a lubricating block is provided at the ball bearings, which can maintain the lubrication effect for a long time and increase the service life of the entire device. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic cross-sectional view of the overall structure of this utility model;

[0020] Figure 3 for Figure 2 A magnified structural diagram at point A;

[0021] Figure 4 This is an exploded structural diagram of the connecting column, connecting pipe and ball bearings in this practical application;

[0022] Figure 5 This is an exploded structural diagram of the connecting pipe and moving component of this utility model;

[0023] Figure 6 This is a schematic diagram of the exploded structure of the connecting pipe, cutting ring, and protective ring of this utility model.

[0024] In the diagram: 1. Tailpipe; 2. Upper connecting post; 3. Lower connecting post; 4. Blade ring; 5. Connecting pipe; 6. Separation chamber; 7. Mixing chamber; 8. Filter plate; 9. Threaded pipe; 10. Sliding cavity; 11. Moving assembly; 111. Circular groove; 112. Ball bearing; 113. Wetting block; 114. Spring; 12. Contact ring; 13. Adhesion ring; 14. Ring groove; 15. Protective ring. Detailed Implementation

[0025] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] Example 1

[0027] Please see Figure 1-5 This utility model provides a technical solution:

[0028] A direct-connected solvent effect eliminator includes an upper connecting column 2, a lower connecting column 3 disposed on the upper connecting column 2, and a tail tube 1 disposed inside the lower connecting column 3. The upper connecting column 2 and the lower connecting column 3 can form a complete eliminator, and the eliminator also includes:

[0029] Sliding cavity 10 is formed inside the upper connecting column 2;

[0030] The connecting pipe 5 is movably disposed inside the sliding cavity 10 for free extension and retraction adjustment;

[0031] The movable component 11 is disposed on the connecting pipe 5, so that the connecting pipe 5 can slide more easily and stably inside the sliding cavity 10.

[0032] A circular groove 111 is formed on the outer surface of the connecting pipe 5. The moving component 11 includes a wetting block 113 movably disposed on the inner wall of the circular groove 111. A ball bearing 112 is movably disposed on the side of the wetting block 113. The outer surface of the ball bearing 112 is movably disposed on the inner wall of the sliding cavity 10. The arrangement of the ball bearing 112 can reduce the contact area between the connecting pipe 5 and the sliding cavity 10, thereby facilitating the movement of the connecting pipe 5. Furthermore, the wetting block 113 is filled with lubricant, which can automatically lubricate the ball bearing 112 as it rotates.

[0033] A spring 114 is provided on the inner wall of the circular groove 111. The two ends of the spring 114 are respectively provided on the side of the wet block 113 and the end face of the inner wall of the circular groove 111. The spring 114 can squeeze the ball 112, making it more stable and having a certain bending resistance. Under the action of the spring 114, the ball 112 and the connecting tube 5 are reset.

[0034] An adhesive ring 13 is fitted on the outer surface of the connecting pipe 5, and a contact ring 12 is provided on the inner wall of the sliding cavity 10. The end face of the adhesive ring 13 is movably disposed on the outer surface of the contact ring 12. The adhesive ring 13 can connect with the contact ring 12 when the connecting pipe 5 reaches its maximum elongation distance, thus having an adhesive effect and reducing the wear of the connecting pipe 5 and the sliding cavity 10.

[0035] A mixing chamber 7 is provided inside the upper connecting column 2 near the end face of the connecting pipe 5, and a separation chamber 6 connected to the mixing chamber 7 is provided inside the lower connecting column 3 near the end face of the tail pipe 1. Both the mixing chamber 7 and the separation chamber 6 are provided with multiple filter plates 8.

[0036] A blade ring 4 is movably provided on the end face of the connecting pipe 5 away from the upper connecting post 2. A threaded pipe 9 is provided on the end face of the lower connecting post 3 near the upper connecting post 2. The inner wall of the upper connecting post 2 is threaded and threaded to the outer surface of the threaded pipe 9. The threaded pipe 9 on the lower connecting post 3 can be threaded to the inner wall of the upper connecting post 2, so that the upper connecting post 2 and the lower connecting post 3 can be freely disassembled, and the connection between the two through the thread is very firm.

[0037] When using this device, the internal pipeline of the connecting pipe 5 must first be connected, and the threaded parts must also be connected. After completion, when the exposed part of the pipeline needs to be adjusted, pull the threaded parts to move the connecting pipe. The connecting pipe will move inside the sliding cavity, and at the same time, the ball bearings on the outer surface will contact the inner wall of the sliding cavity. Therefore, the movement of the connecting pipe 5 can be adjusted freely. It also requires a certain amount of force to move due to the compression of the spring.

[0038] Example 2

[0039] Please see Figure 6 This utility model provides a technical solution:

[0040] Unlike Embodiment 1, the end face of the connecting pipe 5 near the blade ring 4 is provided with an annular groove 14, and the end face of the blade ring 4 is provided with a protective ring 15. The protective ring 15 is movably disposed on the inner wall of the annular groove 14. When the blade ring 4 contacts the end face of the connecting pipe 5, it can drive the protective ring 15 into the interior of the annular groove 14. When the pipeline is folded at the end face of the connecting pipe 5, the protective ring 15 can block the dust or dirt from entering the interior of the connecting pipe 5.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] Although embodiments of the present utility 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 utility, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A direct-connect solvent effect eliminator, comprising an upper connecting column (2), a lower connecting column (3) disposed on the upper connecting column (2), and a tail tube (1) disposed inside the lower connecting column (3), characterized in that: It also includes: A sliding cavity (10) is formed inside the upper connecting column (2); A connecting pipe (5) is movably disposed inside the sliding cavity (10) for free extension and retraction adjustment; The movable component (11) is disposed on the connecting tube (5) so that the connecting tube (5) can slide more easily and stably inside the sliding cavity (10).

2. The direct-drive solvent effect eliminator according to claim 1, characterized in that: The outer surface of the connecting pipe (5) is provided with a circular groove (111). The moving component (11) includes a wetting block (113) movably disposed on the inner wall of the circular groove (111). A ball bearing (112) is movably disposed on the side of the wetting block (113). The outer surface of the ball bearing (112) is movably disposed on the inner wall of the sliding cavity (10).

3. The direct-drive solvent effect eliminator according to claim 2, characterized in that: The inner wall of the circular groove (111) is provided with a spring (114), and the two ends of the spring (114) are respectively provided on the side of the wet block (113) and the end face of the inner wall of the circular groove (111).

4. The direct-drive solvent effect eliminator according to claim 3, characterized in that: An adhesive ring (13) is sleeved on the outer surface of the connecting pipe (5), and a contact ring (12) is provided on the inner wall of the sliding cavity (10). The end face of the adhesive ring (13) is movably disposed on the outer surface of the contact ring (12).

5. The direct-drive solvent effect eliminator according to claim 4, characterized in that: A mixing chamber (7) is provided inside the upper connecting column (2) near the end face of the connecting pipe (5), and a separation chamber (6) connected to the mixing chamber (7) is provided inside the lower connecting column (3) near the end face of the tail pipe (1). Both the mixing chamber (7) and the separation chamber (6) are provided with multiple filter plates (8).

6. The direct-drive solvent effect eliminator according to claim 5, characterized in that: The end face of the connecting pipe (5) away from the upper connecting column (2) is provided with a cutting ring (4), and the end face of the lower connecting column (3) near the upper connecting column (2) is provided with a threaded pipe (9). The inner wall of the upper connecting column (2) is threaded, and the inner wall of the upper connecting column (2) is threaded to the outer surface of the threaded pipe (9).

7. The direct-drive solvent effect eliminator according to claim 6, characterized in that: The connecting pipe (5) has an annular groove (14) on its end face near the blade ring (4), and a protective ring (15) is provided on the end face of the blade ring (4). The protective ring (15) is movably disposed on the inner wall of the annular groove (14).

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