CN220671350U

CN220671350U - Gas chromatograph

Info

Publication number: CN220671350U
Application number: CN202321801104.3U
Authority: CN
Inventors: 赵振新; 袁宏伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-07-10
Filing date: 2023-07-10
Publication date: 2024-03-26
Anticipated expiration: 2033-07-10

Abstract

The application relates to the technical field of gas chromatographs, in particular to a gas chromatograph, which comprises a machine body (1) and an injection mechanism (2) connected to the machine body (1), wherein a sample injector is arranged at the top of the machine body (1), the injection mechanism (2) comprises a mixing component (21) for preparing a solution to be detected and an injection component (22) connected to the mixing component (21), one end of the injection component (22) is communicated with the bottom of the mixing component (21), and the other end of the injection component (22) is communicated with the sample injector. The application has the effect of improving detection accuracy.

Description

Gas chromatograph

Technical Field

The application relates to the technical field of gas chromatographs, in particular to a gas chromatograph.

Background

Gas chromatographs are instruments that use chromatographic separation techniques and detection techniques to perform qualitative and quantitative analysis of complex mixtures of multiple components, and are commonly used to analyze thermally stable organic materials in the soil that have boiling points no greater than 500 ℃.

According to different states of samples, the gas chromatograph adopts different injectors, the liquid sample is generally injected by adopting a microinjector, when the microinjector is used for injection, the solid sample is firstly dissolved in a proper reagent, and then the microinjector is used for injection, however, in the process of extracting the sample by using the microinjector and injecting the sample into the injector of the gas chromatograph, the sample needs to be transferred by exposing in the air for many times, and the sample is easily polluted in the process, so that the detection accuracy is affected.

Disclosure of Invention

In order to improve the accuracy of detection, the application provides a gas chromatograph.

The application provides a gas chromatograph adopts following technical scheme:

the gas chromatograph comprises a machine body and an injection mechanism connected with the machine body, wherein a sample injector is arranged at the top of the machine body, the injection mechanism comprises a mixing component for manufacturing a solution to be detected and an injection component connected with the mixing component, one end of the injection component is communicated with the bottom of the mixing component, and the other end of the injection component is communicated with the sample injector.

Through adopting above-mentioned technical scheme, when the user detects solid sample, put into the reagent of mixing element inside with solid sample, mixing element dissolves solid sample, and injection assembly sends the inside solution of waiting to detect of mixing element inside into the inside of organism and detects for wait to detect the solution and flow in injection mechanism's inside all the time, reduced and wait to detect the possibility that liquid exposes in the outside air, reduced and wait to detect the possibility that the solution receives the pollution, improved the accuracy of detecting.

Optionally, the injection assembly includes the injection tube that communicates in the mixing assembly, communicate in the injection pump of injection tube, connect in the protection valve of injection tube and connect in the injection valve of injection tube, the injection pump is located between protection valve and the injection valve, the other end of injection tube communicate in the injector.

Through adopting above-mentioned technical scheme, the user is used to open the injection pump and sends the inside of organism into the inside of waiting to detect solvent of mixing element inside for wait to detect the solution and flow in injection mechanism's inside all the time, reduced the possibility that wait to detect the liquid and expose in the outside air, reduced the possibility that wait to detect the solution and receive the pollution, improved the accuracy that detects.

Optionally, the mixing assembly includes the agitator tank and connect in the stirring piece of agitator tank, the top of agitator tank is provided with the feed gate that is used for the feeding, and the one end of injection tube communicates in the bottom of agitator tank.

Through adopting above-mentioned technical scheme, the user drops into the inside of agitator tank with solid sample and appropriate reagent from the feed gate, fully dissolves solid sample in the reagent through the stirring piece, improves the speed of dissolving, improves work efficiency.

Optionally, a sealing ring is circumferentially arranged on the feeding door.

By adopting the technical scheme, the tightness of the feeding door is improved, the exchange of the air inside the stirring tank and the air outside the stirring tank is reduced, the possibility that the solution to be detected contacts the air outside is reduced, the possibility that the solution to be detected is polluted is reduced, and the detection accuracy is improved.

Optionally, the stirring piece includes fixed connection in the agitator motor of agitator tank, rotate connect in the (mixing) shaft of agitator tank and fixed connection in a plurality of stirring of (mixing) shaft, agitator motor's output fixed connection in the tip of (mixing) shaft.

Through adopting above-mentioned technical scheme, after the agitator motor starts, drive (mixing) shaft and stirring, realize stirring mixed purpose.

Optionally, the axis of the stirring shaft is perpendicular to the bottom surface of the stirring box, and the bottom end of the stirring shaft is rotationally connected to the inner bottom of the stirring box.

Through adopting above-mentioned technical scheme, the both ends of (mixing) shaft all receive the constraint for the rotation of (mixing) shaft is more stable.

Optionally, the plurality of stirring rods are divided into a plurality of layers along the direction perpendicular to the bottom surface of the stirring box.

Through adopting above-mentioned technical scheme, the stirring of stirring to the solution of different degree of depth improves the rate that solid sample dissolved.

Optionally, the injection tube is provided with a weighing tube, the weighing tube is located right above the injector, the weighing tube is a transparent weighing tube, and graduation lines are arranged on the surface of the weighing tube.

By adopting the technical scheme, the accurate sample injection of the user is convenient.

In summary, the present application includes at least one of the following beneficial technical effects:

according to the method and the device, the mixing component and the injection component are arranged, so that the quantity of solvents to be detected in transportation by a user is reduced, the possibility that the liquid to be detected is exposed to the outside air is reduced, the possibility that the solution to be detected is polluted is reduced, and the detection accuracy is improved;

according to the liquid detection device, the mixing assembly and the injection assembly are arranged, so that the solution to be detected is always in the injection mechanism, the possibility that the liquid to be detected is exposed to the outside air is reduced, the possibility that the solution to be detected is polluted is reduced, and the detection accuracy is improved.

Drawings

FIG. 1 is a schematic diagram of a gas chromatograph;

FIG. 2 is a partial cross-sectional view intended to emphasize the construction of the hybrid assembly;

FIG. 3 is a schematic view of the structure of a feed gate;

fig. 4 is a schematic view intended to emphasize the construction of the injection assembly.

Reference numerals illustrate: 1. a body; 2. an injection mechanism; 21. a mixing assembly; 211. a stirring tank; 2111. a feed gate; 21111. a seal ring; 212. a stirring member; 2121. a stirring motor; 2122. a stirring shaft; 2123. a stirrer; 22. an injection assembly; 221. a syringe; 2211. weighing tube; 222. a syringe pump; 223. a protection valve; 224. and a sample injection valve.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-4.

The embodiment of the application discloses a gas chromatograph. Referring to fig. 1, a gas chromatograph includes a body 1 and an injection mechanism 2 connected to the body 1, the injection mechanism 2 includes a mixing assembly 21 for dissolving a solid sample in a reagent and an injection assembly 22 connected to the mixing assembly 21, two ends of the injection assembly 22 connect the mixing assembly 21 to the body 1, when a user wants to detect the solid sample, the solid sample is directly put into the reagent in the mixing assembly 21, after the solid sample is completely dissolved by the mixing assembly 21, a solution to be detected in the mixing assembly 21 is sent into the body 1 by the injection assembly 22 for detection, so that the possibility that the liquid to be detected is exposed to the outside air is reduced, the possibility that the liquid to be detected is polluted is reduced, and the detection accuracy is improved.

Referring to fig. 2 and 3, the mixing assembly 21 includes a stirring tank 211 and a stirring member 212 connected to the stirring tank 211, a feeding door 2111 for feeding is provided at the top of the stirring tank 211, when a user opens the feeding door 2111, a solid sample and a reagent for dissolving the solid sample can be placed into the stirring tank 211 to be stirred and mixed and dissolved, a sealing ring 21111 is circumferentially provided at the feeding door 2111, when the user places the solid sample and a proper reagent into the stirring tank 211, the sealing ring 21111 can reduce gas exchange between the inside of the stirring tank 211 and the outside air, reduce the possibility that the mixed reagent to be detected contacts the outside air of the stirring tank 211, reduce the possibility that the liquid to be detected is polluted, and improve the detection accuracy.

Referring to fig. 2 and 3, the stirring member 212 includes a stirring motor 2121 fixedly connected to the stirring tank 211, a stirring shaft 2122 rotatably connected to the inside of the stirring tank 211, and a plurality of stirring rods 2123 fixedly connected to the circumference of the stirring shaft 2122, wherein the stirring motor 2121 is fixedly connected to the top of the stirring tank 211, the axis of the stirring shaft 2122 is perpendicular to the bottom surface of the stirring tank 211, the output end of the stirring motor 2121 is fixedly connected to the end of the stirring shaft 2122 by means of a coupling, the top of the stirring shaft 2122 is rotatably connected to the inner top of the stirring tank 211, and the bottom end of the stirring shaft 2122 is rotatably connected to the inner bottom of the stirring tank 211, so that the rotation of the stirring shaft 2122 is more stable.

When the stirring motor 2121 is started, the stirring shaft 2122 is driven to rotate inside the stirring tank 211, and the stirring shaft 2122 drives the stirrer 2123 to rotate, so that the liquid inside the stirring tank 211 is stirred, the dissolution speed of the solid sample is accelerated, and the solid sample is dissolved more uniformly in a proper reagent.

Referring to fig. 2 and 3, the number of the stirring bars 2123 is three, the three stirring bars 2123 are divided into three layers along the direction perpendicular to the bottom surface of the stirring tank 211, and the stirring shaft 2122 drives the stirring bars 2123 to stir reagents with different depths when rotating, so that the dissolution speed of the solid sample is faster.

Referring to fig. 1 and 4, the injection assembly 22 includes an injection tube 221 connected to the stirring tank 211, an injection pump 222 connected to the injection tube 221, a protection valve 223 connected to the injection tube 221, and a sample injection valve 224 connected to the injection tube 221, the machine body 1 is provided with a sample injector, one end of the injection tube 221 is connected to the bottom of the stirring tank 211, and the other end of the injection tube 221 is connected to the sample injector, so that the purpose of directly connecting the mixing assembly 21 and the machine body 1 is achieved, the possibility that a solution to be detected is exposed to the outside air is reduced, the possibility that the solution to be detected is polluted is reduced, the detection accuracy is improved, and meanwhile, one end of the injection tube 221 is connected to the inner bottom of the stirring tank 211, so that the solution to be detected in the stirring tank 211 can enter the machine body 1 to be detected as much as possible, and the reagent waste is reduced.

Referring to fig. 1 and 4, injection pump 222 provides power for the flow of the solution to be detected, injection pump 222 is located between protection valve 223 and sample injection valve 224, the end position of injection tube 221 is provided with weighing tube 2211, weighing tube 2211 is located directly above the sample injection device, weighing tube 2211 is located between injection pump 222 and sample injection valve 224, solution is convenient to store in the inside of weighing tube 2211 when sample injection valve 224 is closed, the diameter of weighing tube 2211 is greater than the diameter of injection tube 221, so that weighing tube 2211 can store a large amount of solution to be detected. When the syringe pump 222 is used for working, the protection valve 223 is firstly opened, at this time, the solution to be detected enters the syringe 221 from the inside of the stirring tank 211, then the solution to be detected enters the inside of the weighing tube 2211 for storage, the weighing tube 2211 is a transparent weighing tube 2211, the surface of the weighing tube 2211 is provided with scale marks, the user can observe the volume of the solution to be detected in the weighing tube 2211, the user can open the sample injection valve 224 as required, quantitative sample injection is carried out in the machine body 1, and the detection accuracy is improved.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. The utility model provides a gas chromatograph, includes organism (1), organism (1) top is provided with the injector, its characterized in that: the device is characterized by further comprising an injection mechanism (2) connected to the machine body (1), wherein the injection mechanism (2) comprises a mixing component (21) for preparing a solution to be detected and an injection component (22) connected to the mixing component (21), one end of the injection component (22) is communicated with the bottom of the mixing component (21), and the other end of the injection component (22) is communicated with the injector.

2. A gas chromatograph according to claim 1, characterized in that: the injection assembly (22) comprises an injection tube (221) communicated with the mixing assembly (21), an injection pump (222) communicated with the injection tube (221), a protection valve (223) connected with the injection tube (221) and a sample injection valve (224) connected with the injection tube (221), the injection pump (222) is located between the protection valve (223) and the sample injection valve (224), and the other end of the injection tube (221) is communicated with the sample injector.

3. A gas chromatograph according to claim 2, characterized in that: the mixing assembly (21) comprises a stirring box (211) and a stirring piece (212) connected to the stirring box (211), a feeding door (2111) for feeding is arranged at the top of the stirring box (211), and one end of the injection tube (221) is communicated with the bottom of the stirring box (211).

4. A gas chromatograph according to claim 3, characterized in that: the feed door (2111) is circumferentially provided with a seal ring (21111).

5. A gas chromatograph according to claim 3, characterized in that: the stirring piece (212) comprises a stirring motor (2121) fixedly connected to the stirring box (211), a stirring shaft (2122) rotatably connected to the stirring box (211) and a plurality of stirring rods (2123) fixedly connected to the stirring shaft (2122), and the output end of the stirring motor (2121) is fixedly connected to the end part of the stirring shaft (2122).

6. A gas chromatograph according to claim 5, characterized in that: the axis of the stirring shaft (2122) is perpendicular to the bottom surface of the stirring box (211), and the bottom end of the stirring shaft (2122) is rotatably connected to the inner bottom of the stirring box (211).

7. A gas chromatograph according to claim 5, characterized in that: the plurality of stirring rods (2123) are divided into a plurality of layers in a direction perpendicular to the bottom surface of the stirring tank (211).

8. A gas chromatograph according to claim 2, characterized in that: the syringe (221) is provided with a weighing tube (2211), the weighing tube (2211) is located right above the sample injector, the weighing tube (2211) is a transparent weighing tube (2211), and scale marks are arranged on the surface of the weighing tube (2211).