Gas-phase pre-column connecting kit for chromatographic column

Abstract

The utility model discloses a gas-phase pre-column connecting suite for a chromatographic column, which relates to the technical field of chromatographic columns, and comprises a fixed sheet and an adjusting box arranged on the top surface of the fixed sheet, and further comprises a rotating assembly arranged in the adjusting box, and the rotating assembly comprises a rotating ball and a connecting column; a limiting hole is formed in one side of the adjusting box, and a limiting assembly is arranged in the limiting hole. By arranging the adjusting box, the rotating assembly, the limiting assembly and the buffering assembly, the pre-column after being installed can be fixed and finely adjusted, the impact of external force on the pre-column is relieved, when the pre-column is used, the pre-column is impacted by the external force, inner padding is prone to shaking, and the pre-column is fixed and buffered, so that the service life of the pre-column is prolonged. Shaking during separation and purification of a sample mixture is avoided, and the accuracy of an analysis result and the stability of pre-column connection are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of chromatographic columns, in particular to a gas phase pre-column connection kit for a chromatographic column. Background Art

[0002] A chromatograph is a device used for chromatographic separation and analysis. It includes an injection system, a detection system, a recording and data processing system, a temperature control system, and a mobile phase control system. Modern chromatographs are characterized by stability, sensitivity, versatility, and a high degree of automation. There are gas chromatographs, liquid chromatographs, and gel chromatographs. The chromatographic column consists of a column tube, a pressure cap, a ferrule (sealing ring), a sieve plate (filter disc), connectors, and screws. The gas phase precolumn in a gas chromatograph column requires a connection kit to connect to the corresponding components.

[0003] However, the existing gas phase pre-column connection kit for chromatographic columns only connects the corresponding parts when in use, and the pre-column lacks support and fixation, which makes it difficult to ensure that the gas phase pre-column remains stable during operation and reduce the impact on analytical data. Utility Model Content

[0004] The utility model provides a gas phase pre-column connection kit for a chromatographic column, which has the advantage of facilitating support for the pre-column, thereby solving the existing problem of being unable to ensure that the gas phase pre-column remains stable during operation and reducing the impact on analytical data.

[0005] In order to ensure that the gas phase pre-column remains stable during operation and reduce the impact on analytical data, the utility model provides the following technical solution: a gas phase pre-column connection kit for a chromatographic column, comprising a fixing plate and an adjustment box arranged on the top surface of the fixing plate, and further comprising:

[0006] A rotating assembly is arranged inside the adjustment box, and the rotating assembly includes a rotating ball and a connecting column;

[0007] A limiting hole is provided on one side of the adjustment box, and a limiting component is provided inside the limiting hole, and the limiting component includes a limiting column and a limiting piece;

[0008] A support snap ring is provided on the top surface of the rotating assembly, wherein a plurality of buffer assemblies are provided inside the support snap ring, and the buffer assemblies include a buffer spring, a rubber block A, a clamping block and a rubber block B;

[0009] An elastic clamping ring is provided at one end of the buffer assembly, wherein a clamping column is clamped inside the elastic clamping ring, wherein a column core is provided inside the clamping column, and connection holes are provided at both ends of the clamping column, wherein a connection tube A is provided inside one of the connection holes, and a threaded hole is provided at one end of the connection tube A, wherein a connection assembly is provided inside the threaded hole, and the connection assembly includes a threaded column, a connection tube, a connection sleeve, a connection pipe, and a sealing gasket A;

[0010] A connection B tube is arranged inside the other connection hole, and a transition assembly is arranged at one end of the connection B tube. The transition assembly includes a transition tube, a transition outer tube and a sealing gasket B.

[0011] As a preferred technical solution of the present invention, the rotating assembly includes a rotating ball that is clamped inside the adjustment box, and the top end of the rotating ball is fixedly connected to a connecting column.

[0012] As a preferred technical solution of the present invention, the limiting assembly includes a limiting column threadedly connected to the inner portion of the limiting hole, and one end of the limiting column is fixedly connected to the limiting plate.

[0013] As an optimal technical solution of the present invention, the buffer assembly includes a buffer spring and a rubber block A fixedly connected to the inside of the support clamp, one end of the rubber block A is fixedly connected to a clamping block, and one end of the clamping block is fixedly connected to a rubber block B.

[0014] As an optimal technical solution of the present invention, the connecting assembly includes a threaded column threadedly connected to the inside of the threaded hole, one end of the threaded column is fixedly connected to a connecting pipe, the surface of the connecting pipe is sleeved with a connecting sleeve, one end of the connecting pipe is fixedly connected to a connecting pipe, and a sealing gasket A is clamped inside the connecting pipe.

[0015] As a preferred technical solution of the present invention, a groove is provided in the middle of the connecting tube A and one end of the threaded column, and a fluororubber sealing ring A is clamped inside the groove.

[0016] As an optimal technical solution of the present invention, the adapter assembly includes a adapter tube threadedly connected to one end of the connecting tube B, one end of the adapter tube is fixedly connected to the adapter outer tube, and a sealing gasket B is clamped inside the adapter outer tube.

[0017] As a preferred technical solution of the present invention, sealing grooves are provided in the middle of both ends of the clamping column, and a fluororubber sealing ring B is clamped inside the sealing groove.

[0018] Compared with the prior art, the present invention provides a gas phase pre-column connection kit for a chromatographic column, which has the following beneficial effects:

[0019] 1. The gas phase pre-column connection kit for chromatographic columns can achieve fine-tuning of the installed pre-column and reduce the impact of external forces on the pre-column by providing an adjustment box, a rotating assembly, a limit assembly and a buffer assembly. When the pre-column is in use, it will be impacted by external forces, which may easily cause the internal packing to shake. By fixing and buffering the pre-column, shaking is avoided during separation and purification of sample mixtures, thereby improving the accuracy of analysis results and the stability of the pre-column connection.

[0020] 2. The gas phase pre-column connection kit for the chromatographic column can realize the sealed connection of each corresponding component by arranging the connection A tube, the connection assembly, the connection B tube, the adapter assembly, the fluororubber sealing ring A and the fluororubber sealing ring B. When in use, in order to reduce the time that the gas stays on the sealed connection and the leakage, the addition of the fluororubber sealing ring A and the fluororubber sealing ring B can better improve the sealing effect, avoid leakage when analyzing the test object, and cause detection errors, thereby improving the sealing performance and service life of the connection kit. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the connection assembly of the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the adapter assembly of the utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the rotating assembly of the utility model.

[0025] In the figure: 1. Fixed plate; 2. Adjustment box; 3. Rotating assembly; 301. Rotating ball; 302. Connecting column; 4. Limiting assembly; 401. Limiting column; 402. Limiting plate; 5. Supporting clamp; 6. Buffering assembly; 601. Buffering spring; 602. Rubber block A; 603. Clamping block; 604. Rubber block B; 7. Elastic clamping ring; 8. Clamping column; 9. Column core; 10. Connecting tube A; 11. Connecting assembly; 1101. Threaded column; 1102. Connecting tube; 1103. Connecting sleeve; 1104. Connecting tube; 1105. Sealing gasket A; 12. Connecting tube B; 13. Adapter assembly; 1301. Adapter tube; 1302. Adapter outer tube; 1303. Sealing gasket B; 14. Fluororubber sealing ring A; 15. Fluororubber sealing ring B. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] See also Figure 1-Figure 4 The utility model discloses a gas phase pre-column connection kit for a chromatographic column, comprising a fixing plate 1 and an adjustment box 2 arranged on the top surface of the fixing plate 1, and further comprising: a rotating assembly 3 arranged inside the adjustment box 2, the rotating assembly 3 comprising a rotating ball 301 and a connecting column 302; a limiting hole is provided on one side of the adjustment box 2, a limiting assembly 4 is provided inside the limiting hole, the limiting assembly 4 comprises a limiting column 401 and a limiting plate 402; a supporting clamp 5 is provided on the top surface of the rotating assembly 3, a plurality of buffer assemblies 6 are provided inside the supporting clamp 5, the buffer assemblies 6 comprise a buffer spring 601, a rubber block A602, a clamping block 603 and a rubber block B604; a support ring 5 is provided on one end of the buffer assembly 6 An elastic clamping ring 7 is provided, and a clamping column 8 is clamped inside the elastic clamping ring 7. A column core 9 is provided inside the clamping column 8. Connecting holes are provided at both ends of the clamping column 8. A connecting tube A 10 is provided inside one of the connecting holes. A threaded hole is provided at one end of the connecting tube A 10. A connecting component 11 is provided inside the threaded hole. The connecting component 11 includes a threaded column 1101, a connecting tube 1102, a connecting sleeve 1103, a connecting pipe 1104, and a sealing gasket A 1105. A connecting tube B 12 is provided inside the other connecting hole, and an adapter component 13 is provided at one end of the connecting tube B 12. The adapter component 13 includes a adapter pipe 1301, an adapter outer pipe 1302 and a sealing gasket B 1303.

[0028] Specifically, the rotating assembly 3 includes a rotating ball 301 that is clamped inside the adjustment box 2 , and a connecting post 302 is fixedly connected to the top of the rotating ball 301 .

[0029] In this embodiment, the rotating ball 301 rotates, driving the connecting column 302 to rotate, thereby adjusting the fixed angle of the clamping column 8.

[0030] Specifically, the limiting assembly 4 includes a limiting column 401 threadedly connected to the inner portion of the limiting hole, and one end of the limiting column 401 is fixedly connected to the limiting plate 402 .

[0031] In this embodiment, according to the connection position of the clamping column 8, the limiting column 401 is turned to move the limiting plate 402 away from the surface of the rotating ball 301, and the angle of the supporting clamping ring 5 is adjusted. After the adjustment is completed, the limiting column 401 is tightened to fix the rotating ball 301 inside the adjustment box 2.

[0032] Specifically, the buffer assembly 6 includes a buffer spring 601 and a rubber block A602 fixedly connected to the inside of the supporting clamp ring 5. One end of the rubber block A602 is fixedly connected to a clamping block 603, and one end of the clamping block 603 is fixedly connected to a rubber block B604.

[0033] In this embodiment, the buffer spring 601 , the rubber block A 602 and the rubber block B 604 are elastic, and absorb and disperse the impact force, thereby reducing the vibration of the clamping column 8 .

[0034] Specifically, the connecting component 11 includes a threaded column 1101 threadedly connected to the inside of the threaded hole, one end of the threaded column 1101 is fixedly connected to a connecting tube 1102, a connecting sleeve 1103 is sleeved on the surface of the connecting tube 1102, one end of the connecting tube 1102 is fixedly connected to a connecting pipe 1104, and a sealing gasket A1105 is clamped inside the connecting pipe 1104.

[0035] In this embodiment, when the various components are connected, the threaded column 1101 is sealed and connected to the connecting tube A 10, and the connecting pipe 1104 is sealed and connected to the injection port.

[0036] Specifically, the adapter assembly 13 includes a adapter tube 1301 threadedly connected to one end of the connection B tube 12, one end of the adapter tube 1301 is fixedly connected to the adapter outer tube 1302, and the interior of the adapter outer tube 1302 is clamped with a sealing gasket B1303.

[0037] In this embodiment, during installation and use, the connecting tube B 12 is sealed to the clamping column 8, and the adapter outer tube 1302 is sealed to the connection port of the chromatographic column.

[0038] Specifically, a groove is provided in the middle of the connection tube A 10 and one end of the threaded column 1101 , and a fluororubber sealing ring A14 is clamped inside the groove.

[0039] In this embodiment, when installing and using, the fluororubber sealing ring A14 is placed inside the groove, the threaded column 1101 and the connecting A tube 10 are screwed for sealing and fixing, and the connecting sleeve 1103 on the threaded column 1101 is tightened for further sealing and fixing.

[0040] Specifically, sealing grooves are provided in the middle of both ends of the clamping column 8, and a fluororubber sealing ring B15 is clamped inside the sealing groove.

[0041] In this embodiment, the fluororubber sealing ring B15 is corrosive and performs sealing to increase the sealing performance and the service life of the connection sleeve.

[0042] The working principle and use process of the utility model are as follows: when in use, fix the fixing plate 1, rotate the rotating ball 301, drive the connecting column 302 to rotate, and then adjust the fixed angle of the clamping column 8. According to the connection position of the clamping column 8, screw the limiting column 401 to make the limiting plate 402 away from the surface of the rotating ball 301, and adjust the angle of the supporting clamp ring 5. After the adjustment is completed, tighten the limiting column 401 so that the rotating ball 301 is fixed inside the adjustment box 2. When the various components are connected, the threaded column 1101 is sealed and connected to the connecting tube A 10. The connecting tube 1104 is sealed and connected to the injection port, the connecting tube B 12 is sealed and connected to the card column 8, the adapter outer tube 1302 is sealed and connected to the connection port of the chromatographic column, the fluororubber sealing ring A14 is placed into the inside of the groove, the threaded column 1101 and the connecting tube A 10 are screwed for sealing and fixing, and the connecting sleeve 1103 on the threaded column 1101 is tightened for further sealing and fixing. The buffer spring 601, rubber block A602 and rubber block B604 are elastic, which absorb and disperse the impact force and reduce the vibration of the card column 8.

[0043] In summary, the gas phase pre-column connection kit for the chromatographic column can achieve fine-tuning of the installed pre-column and reduce the impact of external forces on the pre-column by setting the adjustment box 2, the rotating component 3, the limit component 4 and the buffer component 6. When the pre-column is in use, it will be impacted by external forces, which may easily cause the internal filler to shake. By fixing and buffering the pre-column, shaking is avoided during separation and purification of sample mixtures, thereby improving the accuracy of the analysis results and the stability of the pre-column connection; by setting the connection A tube 10, the connection component 11, the connection B tube 12, the adapter component 13, the fluororubber sealing ring A14 and the fluororubber sealing ring B15, the corresponding components can be sealed and connected. During use, in order to reduce the time that the gas stays on the sealed connector and leaks out, the addition of the fluororubber sealing ring A14 and the fluororubber sealing ring B15 can better improve the sealing effect, avoid leakage when analyzing the test object, cause detection errors, and improve the sealing and service life of the connection kit.

[0044] It should be noted that, in this document, terms such as "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0045] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gas phase pre-column connection kit for a chromatographic column, comprising a fixing plate (1) and an adjustment box (2) arranged on the top surface of the fixing plate (1), characterized in that: Also includes: A rotating assembly (3) is arranged inside the adjustment box (2), wherein the rotating assembly (3) comprises a rotating ball (301) and a connecting column (302); A limiting hole is provided on one side of the adjustment box (2), a limiting assembly (4) is provided inside the limiting hole, and the limiting assembly (4) comprises a limiting column (401) and a limiting piece (402); A supporting snap ring (5) is provided on the top surface of the rotating assembly (3), wherein a plurality of buffer assemblies (6) are provided inside the supporting snap ring (5), and the buffer assemblies (6) include a buffer spring (601), a rubber block A (602), a clamping block (603) and a rubber block B (604); An elastic clamping ring (7) is provided at one end of the buffer assembly (6), a clamping column (8) is clamped inside the elastic clamping ring (7), a column core (9) is provided inside the clamping column (8), connecting holes are provided at both ends of the clamping column (8), a connecting tube A (10) is provided inside one of the connecting holes, a threaded hole is provided at one end of the connecting tube A (10), a connecting assembly (11) is provided inside the threaded hole, and the connecting assembly (11) comprises a threaded column (1101), a connecting tube (1102), a connecting sleeve (1103), a connecting pipe (1104), and a sealing gasket A (1105); A connection B tube (12) is provided inside the other connection hole, and a transition assembly (13) is provided at one end of the connection B tube (12). The transition assembly (13) comprises a transition tube (1301), a transition outer tube (1302), and a sealing gasket B (1303).

2. A gas phase pre-column connection kit for a chromatographic column according to claim 1, characterized in that: The rotating assembly (3) comprises a rotating ball (301) that is clamped inside the adjustment box (2), and the top end of the rotating ball (301) is fixedly connected to a connecting column (302).

3. A gas phase pre-column connection kit for a chromatographic column according to claim 2, characterized in that: The limiting assembly (4) comprises a limiting column (401) threadedly connected to the interior of the limiting hole, and one end of the limiting column (401) is fixedly connected to the limiting plate (402).

4. A gas phase pre-column connection kit for a chromatographic column according to claim 1, characterized in that: The buffer assembly (6) comprises a buffer spring (601) and a rubber block A (602) fixedly connected to the interior of the supporting clamp ring (5); one end of the rubber block A (602) is fixedly connected to a clamping block (603); and one end of the clamping block (603) is fixedly connected to a rubber block B (604).

5. The gas phase pre-column connection kit for a chromatographic column according to claim 1, characterized in that: The connection assembly (11) comprises a threaded column (1101) threadedly connected to the inside of the threaded hole, one end of the threaded column (1101) is fixedly connected to a connection pipe (1102), a connection sleeve (1103) is sleeved on the surface of the connection pipe (1102), one end of the connection pipe (1102) is fixedly connected to a connection pipe (1104), and a sealing gasket A (1105) is clamped inside the connection pipe (1104).

6. A gas phase pre-column connection kit for a chromatographic column according to claim 1, characterized in that: The adapter assembly (13) comprises an adapter tube (1301) threadedly connected to one end of the connection B tube (12); one end of the adapter tube (1301) is fixedly connected to an adapter outer tube (1302); and a sealing gasket B (1303) is clamped inside the adapter outer tube (1302).

7. A gas phase pre-column connection kit for a chromatographic column according to claim 1, characterized in that: A groove is provided in the middle of the connecting tube A (10) and one end of the threaded column (1101), and a fluororubber sealing ring A (14) is clamped inside the groove.

8. A gas phase pre-column connection kit for a chromatographic column according to claim 1, characterized in that: A sealing groove is provided in the middle of both ends of the clamping column (8), and a fluororubber sealing ring B (15) is clamped inside the sealing groove.

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