Chromatographic column of meteorological chromatographic instrument

Abstract

The chromatographic column comprises a main body, separating mechanisms and stabilizing mechanisms, the main body comprises a mounting ring, six groups of mounting columns and six groups of abutting plates, the six groups of mounting columns are fixedly connected with the mounting ring, the six groups of abutting plates are fixedly connected with the six groups of mounting columns respectively, and the six groups of separating mechanisms are matched with the six groups of mounting columns. The fixing mechanism comprises a flat wire spring, an abutting ring and a limiting nut, the flat wire spring is arranged on the outer side of the mounting column in a sleeving mode, the bottom of the flat wire spring abuts against the abutting plate, the abutting ring is slidably connected with the mounting column, the bottom of the abutting ring is fixedly connected with the flat wire spring, and the limiting nut is in threaded connection with the mounting column; the device has the beneficial effects that the problem of scattering of chromatographic columns during winding of the chromatographic columns is avoided by arranging the separation mechanism and utilizing the flat wire spring, the device can adjust the screw pitch of the flat wire spring by rotating the limiting nut so as to adapt to winding of column bodies of the chromatographic columns with different specifications, and the device is mainly composed of conventional structural parts and is low in processing cost.

Description

Technical Field

[0001] The utility model relates to the technical field of chromatographic columns, in particular to a chromatographic column of a gas chromatograph. Background Art

[0002] Gas chromatograph is an instrument widely used in the field of chemical analysis. It is used to separate and quantitatively analyze compounds in complex mixtures. The chromatographic column is one of the components of the gas chromatograph and is mainly used to separate the components in the mixture. The common chromatographic column is mainly composed of a column body and a bracket.

[0003] Announcement No. CN217332317U discloses a bracket for a gas chromatography column, comprising a circular ring, a supporting frame, a limiter and a cutter, wherein the outer wall of the circular ring is provided with a plurality of supporting frames, the inner wall of the supporting frame is provided with a plurality of limiters, the inner wall of the supporting frame is provided with a plurality of cutters, and the cutters are located on one side of the limiters, and the inner wall of the supporting frame is provided with a pusher, and the device can limit the chromatographic column to prevent it from scattering when the chromatographic column is wound by installing the supporting frame and the limiter, and when the chromatographic column is wound, the chromatographic column is placed into the inner wall of the limiting groove, and when the chromatographic column enters the interior of the limiting groove, the chromatographic column applies pressure on the top of the limiting plate to move the limiting plate, and after the limiting plate moves, it no longer has a limiting effect on the chromatographic column, and after the chromatographic column enters the interior of the limiting groove, the spring pushes the limiting plate to move into the interior of the limiting groove to limit the chromatographic column, thereby achieving the purpose of preventing the chromatographic column from scattering when the chromatographic column is wound.

[0004] The above device has the following defects: the overall structure of the device is complex, the processing is difficult, the production cost is high, and a single device cannot meet the winding requirements of chromatographic columns of different specifications, and there is room for improvement. Utility Model Content

[0005] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0006] In view of the above-mentioned problem of the chromatographic column of a gas chromatograph, the present utility model is proposed.

[0007] Therefore, the purpose of the utility model is to provide a chromatographic column for a gas chromatograph, which is used to solve the problems of the existing device having a complex overall structure, great processing difficulty, high manufacturing cost, and inability to meet the winding requirements of chromatographic columns of different specifications.

[0008] In order to solve the above technical problems, the utility model provides the following technical solutions: a chromatographic column of a gas chromatograph, comprising:

[0009] A main body, comprising a mounting ring, six groups of mounting posts and six groups of abutment plates, wherein the six groups of mounting posts are fixedly connected to the mounting ring and are equidistantly arranged around the mounting ring, and the six groups of abutment plates are respectively fixedly connected to the six groups of mounting posts, and the outer sides of the mounting posts are provided with threads;

[0010] A separation mechanism, wherein the separation mechanism is provided with six groups in cooperation with the six groups of mounting posts, and comprises a flat wire spring, a butt ring and a limit nut, wherein the flat wire spring is sleeved on the outside of the mounting post and the bottom thereof abuts against the butt plate, the butt ring is slidably connected to the mounting post and the bottom thereof is fixedly connected to the flat wire spring, the limit nut is threadedly connected to the mounting post and the bottom abuts against the butt ring, and the outside of the six groups of the flat wire springs is wound with a chromatographic column shaft;

[0011] A stabilizing mechanism comprises a stabilizing ring and six groups of locking nuts. The stabilizing ring is provided with openings at positions facing the six groups of mounting columns. The six groups of mounting columns respectively pass through the six groups of openings. The bottom of the stabilizing ring abuts against the six groups of limit nuts. The six groups of locking nuts are respectively threadedly connected to the six groups of mounting columns and the bottoms thereof abut against the stabilizing ring.

[0012] As a preferred solution for the chromatographic column of a gas chromatograph described in the utility model, the six groups of mounting columns are all provided with sliding grooves along the axial direction on the outer sides, the six groups of retaining rings are all fixedly connected with sliders on the inner sides, the six groups of sliders are respectively slidably arranged on the inner sides of the corresponding sliding grooves, and the retaining rings are slidably connected to the mounting columns through the sliders.

[0013] As a preferred solution for the chromatographic column of a gas chromatograph described in the utility model, the mounting ring, mounting column, back plate, back ring, limit nut, slider, stabilizing ring and locking nut are all made of stainless steel, and the back ring and slider are integrally formed by a stamping process.

[0014] As a preferred solution of the chromatographic column of the gas chromatograph described in the utility model, the size of the sliding block matches the sliding groove, and the inner diameter of the retaining ring matches the mounting column.

[0015] As a preferred solution of the chromatographic column of the gas chromatograph described in the utility model, wherein: the axis of the stabilizing ring and the mounting ring are arranged to coincide with each other, and the opening size of the stabilizing ring matches the mounting column.

[0016] As a preferred solution of the chromatographic column of the gas chromatograph described in the utility model, the top of the installation column also has a chamfer.

[0017] The beneficial effects of the utility model are as follows: by setting up a separation mechanism to separate the chromatographic column body by using a flat wire spring, the problem of the chromatographic column being scattered when winding the chromatographic column is avoided, and the finished product is ensured to be clear and orderly; and the device can adjust the pitch of the flat wire spring by rotating the limit nut, thereby adapting to the winding of chromatographic column bodies of different specifications, and has a wide range of applications; the device also supports six groups of mounting columns by setting a stabilizing ring, so that the overall structure of the device is stable; the device is mainly composed of a mounting ring, a mounting column, a flat wire spring, a retaining ring and a limit nut, all of which are conventional structural parts with a simple structure and low processing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0019] Figure 1 The utility model is a schematic diagram of the overall structure of a chromatographic column of a gas chromatograph.

[0020] Figure 2 For this utility model Figure 1 A magnified view of the structure of area A.

[0021] Figure 3 The utility model is a schematic diagram of the disassembled structure of a chromatographic column of a gas chromatograph.

[0022] Figure 4 For this utility model Figure 3 A magnified view of the structure of region B.

[0023] Description of the drawings: 100, main body; 101, mounting ring; 102, mounting column; 102a, slide groove; 103, back plate; 200, partition mechanism; 201, flat wire spring; 202, back ring; 203, limit nut; 204, slider; 300, stabilizing mechanism; 301, stabilizing ring; 302, locking nut. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0025] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0027] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0028] Reference Figure 1-Figure 4 , is an embodiment of the utility model, and provides a chromatographic column of a gas chromatograph, which comprises:

[0029] The main body 100 includes a mounting ring 101, six groups of mounting posts 102 and six groups of abutment plates 103. The six groups of mounting posts 102 are fixedly connected to the mounting ring 101 and are equidistantly arranged around the mounting ring 101. The six groups of abutment plates 103 are fixedly connected to the six groups of mounting posts 102, respectively. The outer sides of the mounting posts 102 have threads.

[0030] Separation mechanism 200, the separation mechanism 200 is provided with six groups in cooperation with the six groups of mounting posts 102, which include flat wire springs 201, butt rings 202 and limiting nuts 203, the flat wire springs 201 are sleeved on the outside of the mounting posts 102 and the bottom thereof abuts against the butt plate 103, the butt ring 202 is slidably connected to the mounting posts 102 and the bottom thereof is fixedly connected to the flat wire spring 201, the limiting nut 203 is threadedly connected to the mounting posts 102 and the bottom abuts against the butt ring 202, and the outside of the six groups of flat wire springs 201 is wound with the column shaft of the chromatographic column;

[0031] The stabilizing mechanism 300 includes a stabilizing ring 301 and six sets of locking nuts 302. The stabilizing ring 301 is provided with openings at positions facing the six sets of mounting columns 102. The six sets of mounting columns 102 pass through the six sets of openings respectively. The bottom of the stabilizing ring 301 abuts against the six sets of limiting nuts 203. The six sets of locking nuts 302 are respectively threadedly connected to the six sets of mounting columns 102 and the bottoms of the six sets of mounting columns abut against the stabilizing ring 301.

[0032] It should be noted that the outer sides of the six groups of mounting columns 102 are all provided with sliding grooves 102a along the axial direction, the inner sides of the six groups of retaining rings 202 are all fixedly connected with sliders 204, the six groups of sliders 204 are respectively slidably arranged on the inner sides of the corresponding sliding grooves 102a, and the retaining rings 202 are slidably connected to the mounting columns 102 through the sliders 204.

[0033] In addition, the mounting ring 101, the mounting column 102, the support plate 103, the support ring 202, the limit nut 203, the slider 204, the stabilizing ring 301 and the locking nut 302 are all made of stainless steel, which is corrosion-resistant. The support ring 202 and the slider 204 are integrally formed by a stamping process. The integral stamping process ensures the structural strength and reduces the processing cost.

[0034] In addition, the size of the slider 204 matches the slide groove 102a, the inner diameter of the support ring 202 matches the mounting column 102, the stabilizing ring 301 and the mounting ring 101 are arranged to coincide with each other in axis, and the opening size of the stabilizing ring 301 matches the mounting column 102, thereby ensuring the stability of the device structure. The top of the mounting column 102 also has a chamfer, which facilitates the insertion of the stabilizing ring 301.

[0035] Working principle: each group of locking nuts 302 can be removed by external rotation, and the stabilizing ring 301 can be removed. After the stabilizing ring 301 is removed, for a group of separation mechanisms 200, the limiting nut 203 is rotated, and the limiting nut 203 will move upward or downward along the corresponding mounting column 102. Under the elastic force of the flat wire spring 201, the counter ring 202 will fit the limiting nut 203 and move synchronously. The expansion and contraction amount of the flat wire spring 201 changes, and its pitch changes, which can be adjusted according to the specifications of the chromatographic column body that needs to be wound. After adjusting the six groups of separation mechanisms 200, reset the stabilizing ring 301 and screw in the six groups of locking nuts 302, fine-tune the six groups of limiting nuts 203 and the six groups of locking nuts 302, so that the limiting nut 203 and the locking nut 302 on the same mounting column 102 clamp the stabilizing ring 301. After the adjustment is completed, it can be as shown in the figure. Figure 1 As shown, the column body of the chromatographic column is wound, and six groups of flat wire springs 201 separate and limit the column body, preventing the chromatographic column from falling apart during winding while making the finished product clear and organized.

[0036] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A chromatographic column for a gas chromatograph, characterized in that: include: A main body (100) comprising a mounting ring (101), six groups of mounting columns (102) and six groups of abutment plates (103), wherein the six groups of mounting columns (102) are fixedly connected to the mounting ring (101) and are equidistantly arranged around the mounting ring (101), and the six groups of abutment plates (103) are respectively fixedly connected to the six groups of mounting columns (102), and the outer sides of the mounting columns (102) are provided with threads; A separation mechanism (200), the separation mechanism (200) being provided in six groups in cooperation with the six groups of mounting posts (102), comprising a flat wire spring (201), a butt ring (202) and a limit nut (203), the flat wire spring (201) being sleeved on the outside of the mounting post (102) and having its bottom abutted against the butt plate (103), the butt ring (202) being slidably connected to the mounting post (102) and having its bottom fixedly connected to the flat wire spring (201), the limit nut (203) being threadedly connected to the mounting post (102) and having its bottom abutted against the butt ring (202), and a chromatographic column shaft being wound around the outside of the six groups of the flat wire springs (201); A stabilizing mechanism (300) comprises a stabilizing ring (301) and six groups of locking nuts (302); the stabilizing ring (301) is provided with openings at positions directly opposite to the six groups of mounting columns (102); the six groups of mounting columns (102) respectively pass through the six groups of openings; the bottom of the stabilizing ring (301) abuts against the six groups of limit nuts (203); the six groups of locking nuts (302) are respectively threadedly connected to the six groups of mounting columns (102) and the bottoms of the six groups of locking nuts (302) abut against the stabilizing ring (301).

2. The chromatographic column of a gas chromatograph according to claim 1, characterized in that: The six groups of mounting columns (102) are all provided with a sliding groove (102a) along the axial direction on the outer side, and the six groups of retaining rings (202) are all fixedly connected with a sliding block (204) on the inner side. The six groups of sliding blocks (204) are respectively slidably arranged on the inner side of the corresponding sliding groove (102a), and the retaining ring (202) is slidably connected to the mounting column (102) via the sliding block (204).

3. A chromatographic column for a gas chromatograph according to claim 2, characterized in that: The mounting ring (101), the mounting column (102), the support plate (103), the support ring (202), the limiting nut (203), the slider (204), the stabilizing ring (301) and the locking nut (302) are all made of stainless steel material, and the support ring (202) and the slider (204) are integrally formed by a stamping process.

4. The chromatographic column of a gas chromatograph according to claim 3, characterized in that: The size of the sliding block (204) matches the sliding groove (102a), and the inner diameter of the retaining ring (202) matches the mounting column (102).

5. The chromatographic column of a gas chromatograph according to claim 1, characterized in that: The stabilizing ring (301) and the mounting ring (101) are arranged so that their axes coincide with each other, and the size of the opening of the stabilizing ring (301) matches that of the mounting column (102).

6. The chromatographic column of a gas chromatograph according to claim 1, characterized in that: The top end of the mounting column (102) also has a chamfer.

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