CN-224231725-U - Gas chromatograph for gas detection

Abstract

The utility model relates to a gas chromatograph for gas detection, which aims to solve the problems of unstable air flow in the use process of the traditional gas chromatograph, low separation efficiency and low quantitative accuracy, and the stability of the instrument is also influenced, thereby seriously influencing the quantitative analysis accuracy and further influencing the accuracy of detection results, and comprises an air inlet cylinder, an electric push rod is fixedly connected to the center of the bottom of the air inlet cylinder, the utility model is characterized in that the telescopic end of the electric push rod penetrates through the bottom of the air inlet cylinder and is fixedly connected with the push plate on the inner side of the air inlet cylinder, and the push plate is in sliding connection on the inner side of the air inlet cylinder.

Inventors

• WANG YONG
• ZONG HUI

Assignees

• 江苏远方检测技术服务有限公司

Dates

Publication Date

20260512

Application Date

20250530

Claims (6)

1. 1. The utility model provides a gas chromatograph for gas detection, includes intake section of thick bamboo (2), its characterized in that, the bottom central authorities fixedly connected with electricity push rod (4) of intake section of thick bamboo (2), the flexible end of electricity push rod (4) runs through the bottom of intake section of thick bamboo (2) and with inboard push pedal (3) fixed connection of intake section of thick bamboo (2), inboard sliding connection of push pedal (3) in intake section of thick bamboo (2), the lateral wall fixedly connected with sealing washer (302) of intake section of thick bamboo (2), sealing washer (302) are laminated with the inner wall of intake section of thick bamboo (2).
2. 2. The gas chromatograph for gas detection according to claim 1, characterized in that a centrifugal cylinder (6) is communicated with the upper part of the gas inlet cylinder (2), a secondary cylinder (9) is communicated with the upper part of the centrifugal cylinder (6), the secondary cylinder (9) and the filter cylinder (12) are communicated with each other through a gas pipe (11), and the filter cylinder (12) is communicated with the gas inlet of the chromatograph main body (1) through a section of pipeline.
3. 3. The gas chromatograph for gas detection according to claim 2, characterized in that a centrifugal disk (7) is rotatably connected to the inner side of the centrifugal cylinder (6), a threaded sleeve (701) is fixedly connected to the center of the centrifugal disk (7), and a plurality of centrifugal blades (702) are fixedly connected to the outer side wall of the threaded sleeve (701) in a circumferential array.
4. 4. A gas chromatograph for gas detection according to claim 3, characterized in that the top end of the push plate (3) is fixedly connected with a screw rod (5), and the screw rod (5) passes through the thread bush (701) and is in threaded connection with the thread bush (701).
5. 5. The gas chromatograph for gas detection according to claim 1, wherein the inner side wall of the gas inlet cylinder (2) is fixedly connected with two positioning strips (201), the outer side wall of the push plate (3) is provided with a positioning groove (301), and the positioning strips (201) penetrate through the positioning groove (301) and are connected with the positioning groove (301) in a sliding manner.
6. 6. The gas chromatograph for gas detection according to claim 2, wherein the side wall of the air inlet tube (2) is fixedly connected with an air inlet tube (8), the air inlet tube (8) is communicated with the air inlet tube (2), a first check valve (801) is connected to the surface of the air inlet tube (8) in a sealing manner, a joint (802) is fixedly connected to the outer end of the air inlet tube (8), and a second check valve (10) is connected to the surface of the air delivery tube (11) above the auxiliary tube (9) in a sealing manner.

Description

Gas chromatograph for gas detection Technical Field The utility model relates to the technical field of gas chromatographs, in particular to a gas chromatograph for gas detection. Background In the fields of industrial production, environmental monitoring, public safety, medical health and the like, the demand for accurate detection of gas components is growing. For example, in chemical production, the concentration of volatile organic compounds needs to be monitored in real time to prevent explosion risk, and in the medical field, micro-biomarkers in exhaled gas need to be detected to assist disease diagnosis, so that gas chromatograph becomes a core device for gas detection due to its high sensitivity, high resolution and multi-component analysis capability. In the use process of the traditional gas chromatograph, the problem of unstable air flow exists, which leads to low separation efficiency and low quantitative accuracy, and the stability of the instrument is also influenced, so that the quantitative analysis accuracy is seriously influenced, and the accuracy of a detection result is further influenced. Therefore, a new technical scheme is provided for solving the problems. Disclosure of utility model The utility model aims to overcome the defects of the prior art, adapt to the actual needs, and provide a gas chromatograph for gas detection, so as to solve the technical problems that the current traditional gas chromatograph has unstable gas flow in the use process, the separation efficiency is low, the quantitative precision is not high, the stability of the instrument is influenced, the quantitative analysis precision is seriously influenced, and the accuracy of a detection result is further influenced. In order to achieve the purpose of the utility model, the technical scheme includes that the gas chromatograph for gas detection is designed and comprises a gas inlet cylinder, an electric push rod is fixedly connected to the center of the bottom of the gas inlet cylinder, the telescopic end of the electric push rod penetrates through the bottom of the gas inlet cylinder and is fixedly connected with a push plate on the inner side of the gas inlet cylinder, the push plate is slidably connected on the inner side of the gas inlet cylinder, a sealing ring is fixedly connected to the outer side wall of the gas inlet cylinder, and the sealing ring is attached to the inner wall of the gas inlet cylinder. In this scheme, through transporting the inboard of gas feed cylinder and centrifugal cylinder to rise at the uniform velocity by the push pedal, drive inside gaseous at the uniform velocity get into the chromatograph main part in, showing that optimized separation efficiency, improved quantitative accuracy, and strengthened the overall stability of instrument, and then promoted analysis performance. Preferably, the upper part of the air inlet cylinder is communicated with a centrifugal cylinder, the upper part of the centrifugal cylinder is communicated with an auxiliary cylinder, the auxiliary cylinder is communicated with the filter cylinder through an air pipe, and the filter cylinder is communicated with the air inlet of the chromatograph main body through a section of pipeline. In practical application, the auxiliary cylinder is convenient for the rising of the screw rod, and more sample gas can be stored simultaneously, so that the detection efficiency and accuracy are improved. Preferably, the inner side of the centrifugal cylinder is rotationally connected with a centrifugal disc, the center of the centrifugal disc is fixedly connected with a threaded sleeve, and the outer side wall of the threaded sleeve is fixedly connected with a plurality of centrifugal blades in a circumferential array. In practical application, the screw rod moves upwards along with the push plate, and drives the screw sleeve and the centrifugal disc to rotate when the screw rod passes through the screw sleeve, the inner side of the centrifugal disc is divided into a plurality of spiral channels by the centrifugal blades, and the centrifugal force field is utilized to mechanically pre-separate some aerosol particles in the gas. Preferably, the top end of the push plate is fixedly connected with a screw rod, and the screw rod penetrates through the threaded sleeve and is in threaded connection with the threaded sleeve. In practical application, the screw rod drives the thread bush to rotate, a part of gaps exist between the thread bush and the screw rod, and the surface of the screw rod is smeared with lubricating materials, so that the screw rod is prevented from being clamped when the thread bush is driven to rotate. Preferably, the inside wall fixedly connected with two locating strips of an inlet cylinder, the constant head tank has been seted up to the lateral wall of push pedal, the locating strip passes the constant head tank and links to each other with the constant head tank slip. In practical application, the constr