Leakage-proof vitamin detection chromatographic column

Abstract

The utility model relates to the technical field of chromatographic columns, and discloses a leak-proof chromatographic column for vitamin detection, which comprises a column tube, nut components are mounted at two ends of the column tube, a threaded hole is formed in one side of each nut component, a sealing bolt component is arranged in each threaded hole, and a sealing bolt is arranged in each sealing bolt component. Each nut assembly is provided with a sealing ring assembly which is convenient to disassemble and replace and can be matched with the adjacent sealing bolt assembly to achieve the sealing effect. By arranging the sealing ring assembly and the fixing assembly, the fixing assembly is used for fixing the sealing ring assembly on the nut assembly, so that the whole chromatographic column has a sealing effect after the sealing bolt assembly is tightened, and leakage is prevented; and the sealing ring assembly can be detached only by releasing the fixing effect of the fixing assembly, so that the chromatographic column has a sealing effect to prevent leakage, and sealing parts can be conveniently replaced.

Description

Technical Field

[0001] This utility model relates to the field of chromatography column technology, and in particular to a leak-proof chromatography column for vitamin detection. Background Technology

[0002] Currently, vitamin detection chromatographic columns can be divided into two main categories: packed columns and open tubular columns. They are mostly made of metal or glass and come in shapes such as straight tubes, coils, and U-shaped tubes. When detecting vitamins, straight tube columns are more commonly used. In vitamin detection, a liquid distributor and receiving vessel are usually connected to the outside of the chromatographic column to achieve better detection results.

[0003] Chinese utility model patent CN209656642U discloses a chromatographic column for vitamin detection with leak-proof function. Although the above-mentioned prior art uses fixed and movable clamps to fix and support the feed tube, thus improving the connection sealing, the chromatographic column needs to be tightened into the nut assembly of the column during use. After tightening, the internal sealing ring will be squeezed to achieve the sealing effect. However, the internal sealing ring is not convenient to replace and maintain. Long-term compression will cause the sealing ring to deform, reducing the sealing effect and making the chromatographic column prone to leakage, affecting its use. Therefore, it is necessary to design a leak-proof chromatographic column that can easily maintain the sealing effect. Utility Model Content

[0004] To address the technical problem of inconvenient replacement of the sealing ring inside the chromatographic column, which easily leads to leakage, this utility model provides a leak-proof chromatographic column for vitamin detection.

[0005] This utility model is achieved using the following technical solution: a leak-proof chromatographic column for vitamin detection, comprising a column tube, with nut assemblies installed at both ends of the column tube. Each nut assembly has a threaded hole on one side, and a sealing bolt assembly is provided inside each threaded hole. Each nut assembly has a sealing ring assembly that is easy to disassemble and replace and can achieve a sealing effect when used with adjacent sealing bolt assemblies. Each sealing ring assembly has a fixing assembly on both sides for quickly fixing the sealing ring assembly to the nut assembly. The sealing ring assembly includes a fixing ring on one side of the nut assembly and a sealing ring fixedly installed on the inner ring surface of the fixing ring. One side of the sealing ring extends into the threaded hole of the adjacent nut assembly.

[0006] Through the above technical solution, the sealing component can be inserted into the threaded hole and cooperate with the sealing bolt component to seal the chromatographic column for use. At the same time, the sealing component can be replaced, and the fixing component will keep the sealing component fixed during use to prevent loosening.

[0007] As a further improvement to the above solution, the sealing ring is adapted to the sealing bolt assembly.

[0008] Using the above technical solution, the sealing bolt assembly, together with the sealing ring, can be tightened inside the threaded hole to achieve a sealing effect.

[0009] As a further improvement to the above solution, the fixing component includes a first fixing plate fixedly installed on one side of the fixing ring and having a shrinkage groove, and a second fixing plate disposed inside the shrinkage groove, the second fixing plate being arranged in an "L" shape.

[0010] Through the above technical solution, the first fixing plate, together with the second fixing plate, can fix the position of the fixing ring and prevent the fixing ring from loosening.

[0011] As a further improvement to the above solution, a first rubber plate is fixedly installed on one side of each of the second fixing plates, and one side of each first rubber plate is in contact with one side of the nut assembly.

[0012] Through the above technical solution, the first rubber plate will prevent the second fixing plate from being unstable due to insufficient friction with the nut assembly.

[0013] As a further improvement to the above solution, each of the first fixing plates is provided with a threaded post on one side, one end of each threaded post penetrates the adjacent first fixing plate and extends into the shrinkage groove to fit against one side of the adjacent second fixing plate, and a rotating block is fixedly installed at the other end of each threaded post.

[0014] Using the above technical solution, the rotation of the threaded column will fix the second fixing plate inside the shrinkage groove.

[0015] As a further improvement to the above solution, a third fixing plate with an arc shape is fixedly installed on one side of each of the second fixing plates, and a second rubber plate is fixedly installed on one side of each of the third fixing plates, with one side of each second rubber plate abutting against one side of the nut assembly.

[0016] Through the above technical solution, the second rubber plate, together with the third fixing plate, can increase the contact area between the fixing component and the nut component, thereby making the fixing of the fixing ring more stable.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] This invention, by setting up a sealing ring assembly and a fixing assembly, uses the fixing assembly to fix the sealing ring assembly to the nut assembly, so that the entire chromatographic column can be sealed after the sealing bolt assembly is tightened, thus preventing leakage. When the sealing ring assembly needs to be replaced, it can be disassembled simply by first releasing the fixing assembly. This design not only ensures that the chromatographic column has a sealing effect to prevent leakage, but also facilitates the replacement of sealing parts. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the present invention with a fixing component;

[0021] Figure 3 This is a schematic diagram of the structure of the sealing ring assembly of this utility model.

[0022] Explanation of key symbols:

[0023] 1. Column tube; 2. Nut assembly; 3. Sealing bolt assembly; 401. Fixing ring; 402. Sealing ring; 501. First fixing plate; 502. Second fixing plate; 6. First rubber plate; 7. Threaded column; 8. Third fixing plate; 9. Second rubber plate. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0025] Please combine Figures 1-3 This embodiment provides a leak-proof chromatographic column for vitamin detection, comprising a column tube 1. Both ends of the column tube 1 are fitted with nut assemblies 2. Each nut assembly 2 has a threaded hole on one side, and a sealing bolt assembly 3 is provided inside each threaded hole. Each nut assembly 2 has a sealing ring assembly that is easy to disassemble and replace and can achieve a sealing effect when used with adjacent sealing bolt assemblies 3. Each sealing ring assembly has a fixing assembly on both sides to quickly fix the sealing ring assembly to the nut assembly 2. The sealing ring assembly includes a fixing ring 401 on one side of the nut assembly 2 and a sealing ring 402 fixedly installed on the inner ring surface of the fixing ring 401. One side of the sealing ring 402 extends into the threaded hole of the adjacent nut assembly 2. The sealing ring 402 is adapted to the sealing bolt assembly 3. When the sealing assembly enters the threaded hole and works with the sealing bolt assembly 3, the chromatographic column can be sealed for use, and the sealing assembly can be replaced. The fixing assembly keeps the sealing assembly fixed during use to prevent loosening. The sealing bolt assembly 3, together with the sealing ring 402, can be tightened inside the threaded hole to achieve a sealing effect.

[0026] Combination Figure 2 and Figure 3The fixing assembly includes a first fixing plate 501 fixedly installed on one side of the fixing ring 401 and having a shrinkage groove, and a second fixing plate 502 disposed inside the shrinkage groove. The second fixing plate 502 is L-shaped. A first rubber plate 6 is fixedly installed on one side of each second fixing plate 502. One side of each first rubber plate 6 is in contact with one side of the nut assembly 2. A threaded post 7 is provided on one side of each first fixing plate 501. One end of each threaded post 7 passes through the adjacent first fixing plate 501 and extends into the shrinkage groove and onto one side of the adjacent second fixing plate 502. The two screws are fitted together, and a rotating block is fixedly installed at the other end of each screw post 7. A third fixing plate 8 with an arc shape is fixedly installed on one side of each second fixing plate 502. A second rubber plate 9 is fixedly installed on one side of each third fixing plate 8. One side of each second rubber plate 9 is fitted with one side of the nut assembly 2. The first fixing plate 501 and the second fixing plate 502 can fix the position of the fixing ring 401 and prevent the fixing ring 401 from loosening. The first rubber plate 6 will prevent the second fixing plate 502 from being unstable due to low friction with the nut assembly 2.

[0027] The implementation principle of a leak-proof chromatographic column for vitamin detection in this embodiment is as follows: One side of the sealing ring 402 is inserted into the threaded hole according to the thread. Then, the second fixing plate 502 is slid to engage with the first rubber plate 6 and the nut assembly 2. Rotating the threaded column 7 fixes the position of the second fixing plate 502. Simultaneously, the first rubber plate 6, in conjunction with the second fixing plate 502, compresses and fixes the nut assembly 2. This fixes the positions of the first fixing plate 501 and the fixing ring 401, preventing the sealing ring 402 from loosening. Finally, the sealing bolt assembly 3 is inserted into the sealing ring 402 and tightened according to the thread. When the sealing ring 402 needs to be replaced, simply follow the above steps to release the sealing ring 402 and replace it with a new one. This design not only provides a sealing effect to prevent leakage but also facilitates the replacement of sealing components.

[0028] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A leak-proof chromatographic column for vitamin detection, comprising a column tube (1), wherein both ends of the column tube (1) are fitted with nut assemblies (2), each nut assembly (2) has a threaded hole on one side, and each threaded hole has a sealing bolt assembly (3) inside, characterized in that, Each of the nut assemblies (2) is provided with a sealing ring assembly that is easy to disassemble and replace and can cooperate with the adjacent sealing bolt assembly (3) to achieve a sealing effect. Each of the sealing ring assemblies is provided with a fixing assembly on both sides to quickly fix the sealing ring assembly to the nut assembly (2). The sealing ring assembly includes a fixing ring (401) disposed on one side of the nut assembly (2) and a sealing ring (402) fixedly installed on the inner ring surface of the fixing ring (401). One side of the sealing ring (402) extends into the threaded hole of the adjacent nut assembly (2).

2. The leak-proof chromatographic column for vitamin detection as described in claim 1, characterized in that, The sealing ring (402) is adapted to the sealing bolt assembly (3).

3. The leak-proof chromatographic column for vitamin detection as described in claim 1, characterized in that, The fixing assembly includes a first fixing plate (501) fixedly installed on one side of the fixing ring (401) and having a shrinkage groove, and a second fixing plate (502) disposed inside the shrinkage groove, the second fixing plate (502) being arranged in an "L" shape.

4. The leak-proof chromatographic column for vitamin detection as described in claim 3, characterized in that, A first rubber plate (6) is fixedly installed on one side of each of the second fixing plates (502), and one side of each of the first rubber plates (6) is in contact with one side of the nut assembly (2).

5. The leak-proof chromatographic column for vitamin detection as described in claim 3, characterized in that, Each of the first fixing plates (501) has a threaded post (7) on one side. One end of each threaded post (7) passes through the adjacent first fixing plate (501) and extends into the shrinkage groove to fit against one side of the adjacent second fixing plate (502). A rotating block is fixedly installed at the other end of each threaded post (7).

6. The leak-proof chromatographic column for vitamin detection as described in claim 3, characterized in that, Each of the second fixing plates (502) has a third fixing plate (8) fixedly installed on one side in an arc shape, and each of the third fixing plates (8) has a second rubber plate (9) fixedly installed on one side, and one side of each of the second rubber plates (9) is in contact with one side of the nut assembly (2).

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