CN211122906U

CN211122906U - Automatic air bag sample injector

Info

Publication number: CN211122906U
Application number: CN201921428631.8U
Authority: CN
Inventors: 乔雨
Original assignee: Xinxin Instrument Technology Shanghai Co ltd
Current assignee: Xinxin Instrument Technology Shanghai Co ltd
Priority date: 2019-08-30
Filing date: 2019-08-30
Publication date: 2020-07-28
Anticipated expiration: 2029-08-30

Abstract

The utility model provides an air bag automatic sample injector, which comprises a power supply, a control circuit, an analyzer, an air pump, a selector valve, a purging port and a plurality of sample inlets; the selector valve is provided with a first through port, a second through port and a plurality of third through ports; the first through interface is connected with an analyzer, and a suction pump is arranged on a pipeline between the analyzer and the selection valve; the second communication port is connected with the purging port; the number of the sample inlets is consistent with that of the third through ports, and each third through port is connected with each sample inlet in a one-to-one correspondence manner; the power supply supplies power to the control circuit, the control circuit is respectively in control connection with the air suction pump, the selection valve and the purging port, and the control circuit drives the selection valve to enable the first communication interface to be communicated with the second communication interface or the first communication interface to be communicated with any third communication interface. In this application, autoinjection control is carried out through the selector valve of multiposition. The sweeping and blowing function that possesses can in time clear away remaining gas, reduces cross contamination, and simple structure safety advances kind full automatization, can improve analysis efficiency.

Description

Automatic air bag sample injector

Technical Field

The utility model relates to a flash distillation detection area especially relates to an air pocket autosampler.

Background

The existing sampling analysis mode is complex and needs manual auxiliary operation, the traditional method is to manually collect samples for many times in a short time according to actual requirements, then to analyze the samples one by one off-line, the sampling process and the sample storage process are very easy to generate errors, and the sampling analysis method is very complicated and difficult in actual operation. In order to improve the accuracy of the experiment as much as possible. Meanwhile, under the condition that a plurality of samples need to be detected, the single detection mode is not suitable for a large amount of detections in factories and the like.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an air pocket automatic sample injector, with large batch sample automated inspection in proper order, simple structure safety need not the manual work, realizes advancing kind full automatization, improves analysis efficiency, provides the reliability of analysis data.

In order to achieve the purpose, the utility model provides an air bag automatic sample injector, which comprises a power supply, a control circuit, an analyzer, an air pump, a selector valve, a purging port and a plurality of sample inlets;

the selector valve is provided with a first through port, a second through port and a plurality of third through ports; the first communication port is connected with the analyzer, and the air pump is arranged on a pipeline between the analyzer and the selector valve; the second communication port is connected with the purging port; the number of the sample inlets is consistent with that of the third through ports, and the third through ports are correspondingly connected with the sample inlets one by one;

the power supply supplies power to the control circuit, the control circuit is respectively connected with a computer, the air pump, the selector valve and the purging port circuit, and the computer drives the selector valve through the control circuit to connect the first communication interface with the second communication interface or connect the first communication interface with any one of the third communication interfaces.

Further, in the automatic air bag sample injector, a sample air bag is hung outside the sample injection port.

Further, in the air bag auto-injector, the power supply is 24V dc.

Further, in the automatic air bag sample injector, the number of the third through ports on the selector valve is 2-50.

Further, in the air bag automatic sample injector, pipelines between the selection valve and the analyzer, between the purging port and between the selection valve and the sample injection port are glass tubes, plastic tubes, stainless steel tubes or composite material tubes.

Further, in the air bag auto-injector, the outer diameter of the tube line was 1/16 ″.

Further, in the air bag auto-sampler, the outer diameter of the pipeline is a passivated pipeline.

Further, in the air bag autosampler, the sample inlet is a standard 1/4 "card sleeve joint.

Further, in the air bag auto-sampler, the suction pump is a vacuum diaphragm pump.

Compared with the prior art, the beneficial effects of the utility model are mainly embodied in that: the sample injection control is carried out through a multi-position selection valve, and the sample injection of a 2-50-position sample air bag can be carried out. The negative pressure is applied to the pipeline by using the air pump, and the communicated sample is directly pressed into the analyzer from the sample inlet, so that excellent sample introduction repeatability is ensured, and the air pump cannot be polluted or damaged. The sweeping and blowing function that possesses can in time clear away remaining gas, reduces cross contamination, avoids influencing subsequent gas sample and carries out accurate detection. The control circuit can selectively control the sample introduction sequence, the repeated times, the single sample introduction time length, the sweeping and blowing time length, display the current sample introduction state and the like. The whole device has simple and safe structure, can realize full automation of sample introduction, improves the analysis efficiency and provides the reliability of analysis data.

Drawings

FIG. 1 is a schematic diagram of the schematic structure of an automatic air bag sample injector of the present invention;

FIG. 2 is a schematic view of the internal structure of the automatic air bag sample injector of the present invention;

fig. 3 is a schematic diagram of the external structure of the automatic air bag sample injector of the present invention.

The device comprises a power supply 1, a control circuit 2, an analyzer 3, an air pump 4, a selector valve 5, a purging port 6, a sample inlet 7, a first through interface 81, a second through interface 82, a third through interface 83 and a computer 9.

Detailed Description

The air bag autosampler of the present invention will now be described in greater detail in connection with the schematic drawings wherein there is shown a preferred embodiment of the invention, it being understood that those skilled in the art may modify the invention herein described while still achieving the advantageous effects of the invention. Accordingly, the following description should be construed as broadly as possible to those skilled in the art and not as limiting the invention.

In the present invention, unless otherwise expressly specified or limited, the terms "assembled", "connected", and "connected", if any, are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; or may be a mechanical connection; the two elements can be directly connected or connected through an intermediate medium, and the two elements can be communicated with each other. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

The invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.

As shown in fig. 1 to 3, the present invention provides an air bag automatic sample injector, which comprises a power supply, a control circuit 2, an analyzer 3, an air pump 4, a selector valve 5, a purge port 6 and a plurality of sample inlets 7; the selector valve 5 is provided with a first through port 81, a second through port 82 and a plurality of third through ports 83; the first through port 81 is connected with the analyzer 3, and a suction pump 4 is arranged on a pipeline between the analyzer 3 and the selector valve 5; the second communication port 82 is connected with the purge port 6; the number of the sample inlets 7 is consistent with that of the third through ports 83, and each third through port 83 is correspondingly connected with each sample inlet 7 one by one; the power supply supplies power to the control circuit 2, the control circuit 2 is respectively in circuit connection with the computer 9, the air suction pump 4, the selector valve 5 and the purging port 6, and the computer 9 drives the selector valve 5 through the control circuit 2 to connect the first communication interface 81 with the second communication interface 82 or connect the first communication interface 81 with any third communication interface 83.

Further, as shown in fig. 3, the sample injection port 7 is externally provided with a sample air bag, the number of the third through ports 83 on the selector valve 5 is 2-50, that is, the sample injection control is performed through the multi-position selector valve 5, and the sample injection of the 2-50-position sample air bag can be performed. Meanwhile, the surface of the sample injector is provided with a display panel 0, and the current working state of the sample injector is marked on the display panel 0.

Specifically, as shown in fig. 1 to 3, in this embodiment, the pipelines between the selector valve 5 and the analyzer 3, between the purge port 6 and between the selector valve and the injection port 7 are glass tubes, plastic tubes, stainless steel tubes or composite tubes, the outer diameter of the pipeline is 1/16 ″, the outer diameter of the pipeline is a passivated pipeline, corrosion and adsorption can be avoided, and the method is applicable to detection of trace substances such as sulfides and oxides. The sample inlet 7 is a standard 1/4' board-penetrating ferrule connector, and the power supply is 24V direct current. The air pump 4 is a vacuum diaphragm pump, negative pressure is applied to the pipeline by the air pump 4, and the communicated sample is directly pressed into the analyzer 3 from the sample inlet 7, so that excellent sample introduction repeatability is ensured, and the air pump 4 cannot be polluted or damaged. The brand of analyzer 3 selected includes, but is not limited to, Agilent, American thermoelectric, PE, Shimadzu, etc. The automatic sample injection control in the embodiment can be performed by the analyzers 3 of each brand, and the analysis efficiency is improved.

The specific operating conditions are as follows:

1) the selector valve 5 is controlled to connect the first communication port 81 and the second communication port 82, i.e., to connect the purge port 6 and the analyzer 3, and perform purge;

2) after purging is finished, a sample air bag is externally hung on the sample inlet 7, and the air pump 4 is controlled to apply negative pressure to a pipeline between the analyzer 3 and the selection valve 5;

3) the selection valve 5 is controlled to connect the first through interface 81 with any one third through interface 83, and even if the sample inlet 7 is connected with the analyzer 3, the gas in the sample gas bag enters the analysis under the negative pressure;

4) after the sample introduction is finished, controlling the analyzer 3 to analyze, and sending an analysis result to the computer 9;

5) after the analysis is finished, the selection valve 5 is controlled to connect the first through port 81 and the second through port 82, bypass purging is performed again, and residual gas is removed to perform next sample injection inspection.

Wherein, the purging time length, the sample introduction sequence, the repeated sample introduction time length and the balance time can be set and controlled by the computer 9 through the control circuit 2.

In summary, in the air bag automatic sample injector provided in this embodiment, the sample injection control is performed through the multi-position selection valve, and the sample injection of the 2-position to 50-position sample air bag can be performed. The negative pressure is applied to the pipeline by using the air pump, and the communicated sample is directly pressed into the analyzer from the sample inlet, so that excellent sample introduction repeatability is ensured, and the air pump cannot be polluted or damaged. The sweeping and blowing function that possesses can in time clear away remaining gas, reduces cross contamination, avoids influencing subsequent gas sample and carries out accurate detection. The control circuit can selectively control the sample introduction sequence, the repeated times, the single sample introduction time length, the sweeping and blowing time length, display the current sample introduction state and the like. The whole device has simple and safe structure, can realize full automation of sample introduction, improves the analysis efficiency and provides the reliability of analysis data.

The above description is only for the preferred embodiment of the present invention, and does not limit the present invention. Any technical personnel who belongs to the technical field, in the scope that does not deviate from the technical scheme of the utility model, to the technical scheme and the technical content that the utility model discloses expose do the change such as the equivalent replacement of any form or modification, all belong to the content that does not break away from the technical scheme of the utility model, still belong to within the scope of protection of the utility model.

Claims

1. An air bag automatic sample injector is characterized by comprising a power supply, a control circuit, an analyzer, an air pump, a selection valve, a purging port and a plurality of sample inlets;

2. The air bag autosampler of claim 1, wherein the sample inlet is externally hung with a sample air bag.

3. The air bag autosampler of claim 1, wherein said power source is 24 vdc.

4. The air bag autosampler of claim 1, wherein the number of third ports on said selector valve is 2-50.

5. The air bag autosampler of claim 1, wherein the tubing between the selector valve and the analyzer, purge port and sample port is glass tubing, plastic tubing, stainless steel tubing or composite tubing.

6. The air bag autosampler of claim 5, wherein the tubing has an outer diameter of 1/16 ".

7. The air bag autosampler of claim 5, wherein the outer diameter of the tubing is blunt tubing.

8. The air bag autosampler of claim 1, wherein the sample inlet is a standard 1/4 "card-through ferrule fitting.

9. The air bag autosampler of claim 1, wherein said suction pump is a vacuum diaphragm pump.