Automatic calibration device for thermal cracking chromatograph
By designing a combination device of limit assembly and rubber anti-slip pad in a thermal cracking chromatograph, the problem of fixed base position offset is solved, and the accuracy and stability of calibration results are improved.
Patent Information
- Application Number
- CN202420528706.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-19
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-03-19
AI Technical Summary
During the calibration process of thermal cleavage chromatograph, the position shifting of the fixed base is prone to occur, which affects the accuracy of the calibration results.
An automatic calibration device including a limiting assembly is designed, and the limiting block is driven by the adjustment screw through the combination of the snap ring, the fixing rod, the fixing seat, the connecting plate, the clamping plate, the limiting block, the adjustment screw and the guide block. The clamping plate moves, clamps the fixing seat to ensure its position is stable, and increases friction through the rubber anti-slip pad to prevent position deviation.
It effectively prevents the position of the fixed seat from being offset when rotating the calibrator, and improves the accuracy and stability of the calibration results.
Smart Images
Figure CN222144951U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of chromatographs, in particular to an automatic calibration device for a thermal pyrolysis chromatograph. Background Art
[0002] Pyrolysis-gas chromatography / mass spectrometry, using Curie point pyrolysis system, it is connected with GC / MS, can analyze high molecular polymers, rubber, various fibers, coatings, and perform qualitative analysis in the fields of petrochemicals, food, medicine, public security, etc. Main uses: 1. Can analyze high molecular samples with accurate qualitative analysis 2. Analyze trace organic compounds 3. Optional chemical source analysis of special organic compounds 4. Can analyze paint, rubber and high melting point organic compounds;
[0003] During the placement of the liquid chromatograph, the liquid chromatograph often tilts slightly due to the unevenness of the work surface, resulting in deviations in the measurement results. In order to solve the above problem, a chromatograph calibrator is often used. However, due to the unstable overall structure of the chromatograph calibrator, it cannot calibrate the liquid chromatograph well, causing inconvenience to the user.
[0004] The existing patent (Announcement No.: CN212872330U) is a novel calibration device for liquid chromatograph, which improves the stability of the calibrator by improving the stability of the calibrator support rod, making the overall structure more stable. At the same time, the inclined support frame also supports the calibrator. When using it, you only need to swing the calibrator, which is very convenient to use. The calibration sticker on the inside of the bottle card slot calibrates the liquid chromatograph, effectively preventing the liquid chromatograph from tilting during placement, and improving the accuracy of the liquid chromatograph measurement structure.
[0005] In view of the above problems, the existing patent provides a solution, but the fixed base is placed directly on the table. When the calibrator is rotated, it is easy to cause the position of the fixed base to shift, thereby affecting the calibration result of the chromatograph.
[0006] Therefore, an automatic calibration device for thermal chromatograph is proposed. Utility Model Content
[0007] In view of this, the purpose of the utility model is to propose an automatic calibration device for a thermal pyrolysis chromatograph to solve the problem that when the fixed base is placed directly on the table, the position of the fixed base may be easily shifted when the calibrator is rotated, thereby affecting the calibration result of the chromatograph.
[0008] Based on the above purpose, the utility model provides an automatic calibration device for a thermal pyrolysis chromatograph, comprising a chromatograph body and a calibrator arranged on one side of the chromatograph, a clamp ring is fixedly connected to the end of the calibrator, a fixing rod is fixedly connected to the end of the calibrator, and a limit assembly for limiting the position of the fixing rod is arranged at the end of the fixing rod;
[0009] The limit assembly includes a fixed seat movably connected to the end of the fixed rod, a connecting plate fixedly connected to the side of the fixed seat, a clamping plate movably arranged under the connecting plate, a limit block fixedly connected to the side of the clamping plate, a limit groove matched with the limit block is opened on the inner wall of the connecting plate, and an adjusting screw extending outside the fixed seat is movably connected to the top of the limit block.
[0010] As a further optimization solution of the utility model, a threaded hole matched with the adjusting screw is opened on the inner wall of the limiting groove, and the adjusting screw rotates in the threaded hole.
[0011] As a further optimization solution of the utility model, a guide block is fixedly connected to the side of the limit block, and a guide groove matched with the guide block is opened on the inner wall of the limit groove.
[0012] As a further optimization solution of the utility model, there are two guide blocks, and the two guide blocks are symmetrically distributed along the vertical center axis of the limit block.
[0013] As a further optimization solution of the utility model, the top of the clamping plate and the bottom of the connecting plate are both fixedly connected with a rubber anti-skid pad, and the surface of the rubber anti-skid pad is provided with a plurality of anti-skid protrusions.
[0014] As a further optimization solution of the utility model, the top end of the fixed rod is fixedly connected with a rotating disk for driving the fixed rod to rotate.
[0015] Beneficial effects of the utility model:
[0016] The present application sets a limit assembly, and with the cooperation of the calibrator, the clamping ring, the fixing rod, the fixing seat, the connecting plate, the clamping plate, the limit block, the limit groove and the adjusting screw, the adjusting screw can drive the limit block to move upward, and drive the clamping plate connected to it to move synchronously, until the clamping plate can clamp the fixing surface, so as to ensure the stability of the position of the fixing seat, and prevent the position of the fixing seat from shifting when the calibrator is rotated, so as to affect the calibration result of the calibrator; by setting a guide block, the limit block can be guided to move in the vertical direction, and the limit block can be prevented from rotating due to the rotation of the adjusting screw; the provision of the rubber anti-slip pad can increase the friction between the clamping plate and the connecting plate and the fixing surface, and prevent the position of the fixing seat from shifting. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0018] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;
[0019] Figure 2 This is a three-dimensional diagram of the structure of the ancestral sword of the utility model;
[0020] Figure 3 This is a three-dimensional diagram of the clamping plate and its connection structure of the utility model.
[0021] The markings in the figure are:
[0022] In the figure: 1. Chromatograph body; 2. Calibrator; 3. Clamping ring; 4. Fixing rod; 5. Fixing seat; 6. Connecting plate; 7. Clamping plate; 8. Limiting block; 9. Limiting groove; 10. Adjusting screw; 11. Guide block; 12. Rubber anti-skid pad; 13. Rotating disk. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.
[0024] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0025] See also Figures 1 to 3 , the utility model provides a technical solution:
[0026] A thermal pyrolysis chromatograph automatic calibration device comprises a chromatograph body 1, and a calibrator 2 arranged on one side of the chromatograph, the end of the calibrator 2 is fixedly connected with a clamp ring 3, as disclosed in the publication (announcement) number: CN212872330U, the upper part of the chromatograph body 1 is connected with a liquid storage bottle, the calibrator 2 is arranged on the outside of the liquid storage bottle, the left side of the calibrator 2 has a storage bottle card slot, the storage bottle card slot is adapted to the liquid storage bottle, the outside of the liquid storage bottle is connected to the storage bottle card slot, the liquid storage bottle slides in the storage bottle card slot, the inner side of the storage bottle card slot is connected to a calibration sticker, and the inner side of the calibration sticker is connected to the liquid storage bottle. When in use, only the calibrator 2 needs to be swung, which is very convenient to use, and the calibration sticker inside the storage bottle card slot plays a calibration role on the chromatograph body 1, effectively preventing the chromatograph body 1 from tilting during placement, and improving the accuracy of the measurement structure of the chromatograph body 1, the end of the calibrator 2 is fixedly connected with a fixing rod 4, and the end of the fixing rod 4 is provided with a limiting component for limiting the position of the fixing rod 4;
[0027] The limiting assembly includes a fixing seat 5 movably connected to the end of the fixing rod 4, a connecting plate 6 is fixedly connected to the side of the fixing seat 5, a clamping plate 7 is movably arranged below the connecting plate 6, a limiting block 8 is fixedly connected to the side of the clamping plate 7, a limiting groove 9 matched with the limiting block 8 is opened on the inner wall of the connecting plate 6, and an adjusting screw 10 extending to the outside of the fixing seat 5 is movably connected to the top of the limiting block 8.
[0028] Specifically, a threaded hole matched with the adjusting screw 10 is formed on the inner wall of the limiting groove 9, and the adjusting screw 10 rotates in the threaded hole.
[0029] By adopting the above-mentioned technical solution, the fixed seat 5 is placed on one side of a stable fixed surface, so that the fixed surface can be engaged between the connecting plate 6 and the clamping plate 7. Afterwards, by rotating the adjusting screw 10, the adjusting screw 10 can drive the limit block 8 to move upward, and drive the clamping plate 7 connected to it to move synchronously until the clamping plate 7 can clamp the fixed surface to ensure that the position of the fixed seat 5 is stable, and prevent the position of the fixed seat 5 from being offset when the calibrator 2 is rotated, thereby affecting the calibration result of the calibrator 2.
[0030] Specifically, Figure 3 As shown, a guide block 11 is fixedly connected to the side of the limiting block 8 , and a guide groove matched with the guide block 11 is formed on the inner wall of the limiting groove 9 .
[0031] Specifically, Figure 3 As shown, there are two guide blocks 11 , and the two guide blocks 11 are symmetrically distributed along the vertical center axis of the limiting block 8 .
[0032] By adopting the above technical solution, when the adjusting screw 10 drives the limit block 8 to move, the guide block 11 can move in the guide groove, so as to guide the limit block 8 to move in the vertical direction, thereby preventing the limit block 8 from rotating due to the rotation of the adjusting screw 10.
[0033] Specifically, Figure 3 As shown, the top of the clamping plate 7 and the bottom of the connecting plate 6 are both fixedly connected with a rubber anti-skid pad 12, and the surface of the rubber anti-skid pad 12 is provided with a plurality of anti-skid protrusions.
[0034] By adopting the above technical solution, the provision of the rubber anti-skid pad 12 can increase the friction between the clamping plate 7 and the connecting plate 6 and the fixing surface, thereby preventing the position of the fixing seat 5 from being offset.
[0035] Specifically, Figure 1 As shown, the top end of the fixing rod 4 is fixedly connected with a rotating disk 13 for driving the fixing rod 4 to rotate.
[0036] By adopting the above technical solution, the setting of the rotating disk 13 can conveniently drive the fixing rod 4 to rotate, thereby driving the calibrator 2 to rotate, so as to calibrate the chromatograph body 1.
[0037] Working principle: Place the fixing seat 5 on one side of a stable fixing surface so that the fixing surface can be engaged between the connecting plate 6 and the clamping plate 7. Then, by rotating the adjusting screw 10, the adjusting screw 10 can drive the limit block 8 to move upward, and drive the clamping plate 7 connected to it to move synchronously, until the clamping plate 7 can clamp the fixing surface to ensure that the position of the fixing seat 5 is stable. Then, by rotating the fixing rod 4, the fixing rod 4 can drive the calibrator 2 to rotate, and calibrate the stability of the chromatograph body 1.
[0038] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.
[0039] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. An automatic calibration device for a thermal pyrolysis chromatograph, comprising a chromatograph body (1), and a calibrator (2) arranged on one side of the chromatograph, wherein a clamp ring (3) is fixedly connected to the end of the calibrator (2), and a fixing rod (4) is fixedly connected to the end of the calibrator (2), characterized in that: The end of the fixing rod (4) is provided with a limiting assembly for limiting the position of the fixing rod (4); The limit assembly comprises a fixed seat (5) movably connected to the end of the fixed rod (4); a connecting plate (6) is fixedly connected to the side of the fixed seat (5); a clamping plate (7) is movably arranged below the connecting plate (6); a limit block (8) is fixedly connected to the side of the clamping plate (7); a limit groove (9) adapted to the limit block (8) is provided on the inner wall of the connecting plate (6); and an adjusting screw (10) extending outside the fixed seat (5) is movably connected to the top of the limit block (8).
2. The automatic calibration device for a thermal chromatograph according to claim 1, characterized in that: The inner wall of the limiting groove (9) is provided with a threaded hole matched with the adjusting screw (10), and the adjusting screw (10) rotates in the threaded hole.
3. The automatic calibration device for a thermal chromatograph according to claim 1, characterized in that: A guide block (11) is fixedly connected to the side of the limit block (8), and a guide groove matching the guide block (11) is formed on the inner wall of the limit groove (9).
4. The automatic calibration device for a thermal chromatograph according to claim 3, characterized in that: There are two guide blocks (11), and the two guide blocks (11) are symmetrically distributed along the vertical center axis of the limiting block (8).
5. The automatic calibration device for a thermal chromatograph according to claim 1, characterized in that: The top of the clamping plate (7) and the bottom of the connecting plate (6) are both fixedly connected with a rubber anti-skid pad (12), and the surface of the rubber anti-skid pad (12) is provided with a plurality of anti-skid protrusions.
6. The automatic calibration device for a thermal chromatograph according to claim 1, characterized in that: The top end of the fixing rod (4) is fixedly connected with a rotating disk (13) for driving the fixing rod (4) to rotate.