Gas chromatograph
By introducing a synchronous heating component into the gas chromatograph to preheat the liquid sample, the problem of poor vaporization of the liquid sample was solved, and more efficient liquid sample processing was achieved.
Patent Information
- Application Number
- CN202423176700.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2034-12-23
AI Technical Summary
Existing gas chromatographs have poor vaporization efficiency before liquid samples enter the chromatographic column, resulting in poor processing performance.
A synchronous temperature-raising component was designed, including a linkage downward pressure spring rod, a rotating disk, a matching rod, and a heat insulation plate. When a liquid sample is injected through a syringe, the linkage downward pressure spring rod is driven to move, so that the liquid sample is concentrated and preheated in the liquid flow channel, and the preheating is carried out by a heat conduction source.
It improves the vaporization efficiency of liquid samples before they enter the chromatographic column, thus enhancing the processing effect.
Smart Images
Figure CN223897389U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of chromatograph, concretely relates to a gas chromatograph. BACKGROUND
[0002] The gas chromatograph is a chromatographic analysis instrument using gas as the mobile phase. Its principle is mainly to realize the separation of a mixture by using the differences in boiling point, polarity and adsorption properties of substances. The sample to be analyzed is vaporized in a vaporization chamber and then carried into a chromatographic column by an inert gas. The column contains a liquid or solid stationary phase. Each component in the sample tends to form a distribution or adsorption equilibrium between the mobile phase and the stationary phase. Different sample injectors are used depending on the state of the sample. For liquid samples, a microsyringe is generally used. For gas samples, a push-pull six-way valve or a rotary six-way valve provided with the chromatograph is usually used. Solid samples are generally dissolved in an appropriate reagent and then injected using a microsyringe.
[0003] The liquid or solid sample is instantaneously vaporized before entering the chromatographic column and then quickly and quantitatively transferred into the chromatographic column. The liquid sample is injected into the chromatographic column, and the vaporization chamber requires a large heat capacity to improve the liquid sample processing effect. SUMMARY
[0004] The utility model provides a kind of gas chromatograph, with the characteristics that concentrated liquid sample can be preheated, it is convenient to vaporize before entering chromatographic column by instrument body, improve liquid sample processing effect.
[0005] The utility model provides the following technical scheme: a kind of gas chromatograph, including instrument body, the instrument body is equipped with injection port, the injection port is equipped with syringe, the syringe both sides are equipped with synchronous temperature raising assembly, the synchronous temperature raising assembly includes linkage lower pressure spring rod, rotary disc, cooperation rod and heat insulating plate, the instrument body is internally equipped with with the liquid flow channel being connected with the injection port, the liquid flow channel outer side is equipped with heating conduction source, the heat insulating plate is located at the heating conduction source outer side, the syringe injection liquid then the heat insulating plate is away from the heating conduction source outer side, carries out release heat source.
[0006] Wherein, the liquid flow channel is provided with resistance passage, and the resistance passage is opposite to the heating conduction source.
[0007] Wherein, the rotary disc outer side is fixedly connected with cooperation rod, and the rotary disc is rotationally connected with the linkage lower pressure spring rod.
[0008] Wherein, the cooperation rod is located at the lower part of the syringe push rod, and drives the cooperation rod to move while pushing the syringe.
[0009] The linkage lower pressing elastic rod is slidably connected with the instrument body, and an elastic piece for resetting is connected on the linkage lower pressing elastic rod.
[0010] The instrument body is provided with a sliding groove, and the heat insulation plate is slidably connected in the sliding groove.
[0011] The bottom end of the resistance channel is a narrow opening, and the liquid is compressed into the resistance channel and then passes through the liquid flow channel.
[0012] The utility model discloses beneficial effects are:
[0013] The synchronous temperature raising assembly includes a linkage lower pressing elastic rod, a rotating disc, a matching rod and a heat insulation plate, liquid sample is injected through the injection port by the syringe when the liquid sample is injected, the linkage lower pressing elastic rod is driven to move at the same time when the liquid is pushed in, the liquid is compressed into the liquid flow channel at this time, the liquid is concentrated in the resistance channel, then the heat insulation plate is moved to gradually open the heating conduction source, so that the concentrated liquid sample can be preheated, and the liquid sample is gasified before entering the chromatographic column through the instrument body, and the effect of liquid sample treatment is improved.
[0014] The parts not involved in the device are the same as or can be realized by the prior art. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is a structural schematic diagram of the utility model;
[0016] Figure 2 It is a structural schematic diagram of the liquid flow channel in the utility model;
[0017] Figure 3 It is a structural schematic diagram of the heat insulation plate in the utility model;
[0018] Figure 4 It is a structural schematic diagram of the linkage lower pressing elastic rod in the utility model;
[0019] In the drawing: 1, instrument body; 11, injection port; 12, syringe; 13, liquid flow channel; 14, resistance channel; 15, sliding groove; 16, heating conduction source; 2, synchronous temperature raising assembly; 21, linkage lower pressing elastic rod; 22, rotating disc; 23, matching rod; 24, heat insulation plate. DETAILED DESCRIPTION
[0020] Please refer to Figures 1-4The utility model provides the following technical scheme: including instrument body 1, instrument body 1 is equipped with injection port 11, injection port 11 is equipped with syringe 12, and the both sides of syringe 12 are equipped with synchronous temperature raising assembly 2, and synchronous temperature raising assembly 2 includes linkage lower pressure elastic link 21, rotating disc 22, cooperation link 23 and heat insulating plate 24, and the inside of instrument body 1 is equipped with the liquid flow channel 13 of being linked with injection port 11, and the outside of liquid flow channel 13 is equipped with heating conduction source 16, and heat insulating plate 24 is located the outside of heating conduction source 16, and when syringe 12 injects liquid, heat insulating plate 24 leaves the outside of heating conduction source 16, and releases heat source.
[0021] In the embodiment: through the synchronous temperature raising assembly 2 including linkage lower pressure elastic link 21, rotating disc 22, cooperation link 23 and heat insulating plate 24 that setting, instrument body 1 is equipped with injection port 11, and injection port 11 is equipped with syringe 12, when placing syringe 12, it is located in injection port 11, then through rotating rotating disc 22, cooperation link 23 is located in the bottom of syringe 12 push end, can drive cooperation link 23 to move while pushing syringe 12, after completing sample injection, rotating disc 22 is rotated, and cooperation link 23 can leave the outside of syringe 12, and linkage lower pressure elastic link 21 can reset under the action of elastic member, continues to block heating conduction source 16, makes heating conduction source 16 heat not to lose, when liquid sample is fed, through syringe 12 to injection port 11, can drive linkage lower pressure elastic link 21 to move while pushing liquid, and the inside of instrument body 1 is equipped with the liquid flow channel 13 of being linked with injection port 11, and the outside of liquid flow channel 13 is equipped with heating conduction source 16, and heat insulating plate 24 is located the outside of heating conduction source 16, and when syringe 12 injects liquid, heat insulating plate 24 leaves the outside of heating conduction source 16, and releases heat source, and instrument body 1 is equipped with sliding groove 15, and heat insulating plate 24 is slidingly connected in sliding groove 15, at this time, liquid is compressed into liquid flow channel 13, and then makes heat insulating plate 24 movement gradually open heating conduction source 16, and heating conduction source 16 can be high-temperature liquid conduction heat, which is beneficial to recycling and energy saving, so that the concentrated liquid sample can be preheated, which is convenient for gasification through instrument body 1 before entering the chromatographic column, and improves the effect of liquid sample treatment.
[0022] Liquid flow channel 13 has resistance channel 14, and resistance channel 14 is opposite to heating conduction source 16;Liquid is compressed into liquid flow channel 13, and then makes heat insulating plate 24 movement gradually open heating conduction source 16, and the concentrated liquid sample is preheated.
[0023] The rotary disc 22 is fixedly connected with a matching rod 23 outside, and the rotary disc 22 is rotationally connected with the linkage lower pressing elastic rod 21; when the injector 12 is placed, it is located in the injection port 11, then the matching rod 23 is located at the bottom of the push-in end of the injector 12 by rotating the rotary disc 22, and after the sample injection is completed, the rotary disc 22 is rotated, and the matching rod 23 can be separated from the outside of the injector 12.
[0024] The linkage lower pressing elastic rod 21 is slidably connected with the instrument body 1, and a spring for resetting is connected on the linkage lower pressing elastic rod 21; the spring can be a spring, and the linkage lower pressing elastic rod 21 can be reset under the action of the spring after the linkage lower pressing elastic rod 21 moves.
[0025] The bottom end of the resistance channel 14 is a narrow opening, and the liquid is compressed into the resistance channel 14 through the liquid flow channel 13; the liquid is compressed into the liquid flow channel 13, the liquid is concentrated in the resistance channel 14, and then the heat insulation plate 24 is moved to gradually open the heating conduction source 16; the heating conduction source 16 can be a high-temperature liquid conduction heat source, which is beneficial to recycling and energy saving, so that the concentrated liquid sample can be preheated.
[0026] The working principle and use process of the utility model are as follows: the instrument body 1 is provided with an injection port 11, and the injection port 11 is provided with an injector 12; when the injector 12 is placed, it is located in the injection port 11, then the matching rod 23 is located at the bottom of the push-in end of the injector 12 by rotating the rotary disc 22, and the matching rod 23 can be separated from the outside of the injector 12 by rotating the rotary disc 22 after the sample injection is completed; the linkage lower pressing elastic rod 21 can be reset under the action of the spring, the heating conduction source 16 is continuously blocked, the heat of the heating conduction source 16 is not lost, the liquid sample is injected into the injection port 11 through the injector 12, the linkage lower pressing elastic rod 21 is moved at the same time, the instrument body 1 is provided with a liquid flow channel 13 which is in communication with the injection port 11, the liquid flow channel 13 is provided with a heating conduction source 16 outside, the heat insulation plate 24 is located outside the heating conduction source 16, the injector 12 injects the liquid, and the heat insulation plate 24 is separated from the outside of the heating conduction source 16 to release the heat source; the instrument body 1 is provided with a sliding groove 15, and the heat insulation plate 24 is slidably connected in the sliding groove 15; at this time, the liquid is compressed into the liquid flow channel 13, the liquid is concentrated in the resistance channel 14, and then the heat insulation plate 24 is moved to gradually open the heating conduction source 16; the heating conduction source 16 can be a high-temperature liquid conduction heat source, which is beneficial to recycling and energy saving, so that the concentrated liquid sample can be preheated, and the liquid sample can be gasified before entering the chromatographic column through the instrument body 1, thereby improving the effect of liquid sample treatment.
Claims
1. A gas chromatograph, comprising a body (1), wherein the body (1) has an injection port (11), and an injector (12) is disposed within the injection port (11), characterized in that: Both sides of the syringe (12) are provided with synchronous heating components (2). The synchronous heating components (2) include a linkage downward pressure spring rod (21), a rotating disk (22), a cooperating rod (23) and a heat insulation plate (24). The instrument body (1) has a liquid flow channel (13) connected to the injection port (11) inside. A heating conduction source (16) is provided outside the liquid flow channel (13). The heat insulation plate (24) is located outside the heating conduction source (16). When the syringe (12) injects liquid, the heat insulation plate (24) moves away from the outside of the heating conduction source (16) to release the heat source.
2. A gas chromatograph according to claim 1, characterized in that: The liquid flow channel (13) has a resistance channel (14) which is opposite to the heating conduction source (16).
3. A gas chromatograph according to claim 1, characterized in that: A mating rod (23) is fixedly connected to the outside of the rotating disk (22), and the rotating disk (22) is rotatably connected to the linkage downward pressing elastic rod (21).
4. A gas chromatograph according to claim 3, characterized in that: The connecting rod (23) is located below the plunger of the syringe (12), and moves the connecting rod (23) while pushing the syringe (12).
5. A gas chromatograph according to claim 1, characterized in that: The linkage pressing elastic rod (21) is slidably connected to the instrument body (1), and a spring element for resetting is connected to the linkage pressing elastic rod (21).
6. A gas chromatograph according to claim 1, characterized in that: The instrument body (1) is provided with a sliding groove (15), and the heat insulation plate (24) is slidably connected in the sliding groove (15).
7. A gas chromatograph according to claim 2, characterized in that: The bottom of the resistance channel (14) is narrow, and the liquid is compressed into the resistance channel (14) and then flows through the liquid channel (13).