CN211652723U - Gas chromatograph - Google Patents
Gas chromatograph Download PDFInfo
- Publication number
- CN211652723U CN211652723U CN201921626988.7U CN201921626988U CN211652723U CN 211652723 U CN211652723 U CN 211652723U CN 201921626988 U CN201921626988 U CN 201921626988U CN 211652723 U CN211652723 U CN 211652723U
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- sliding sleeve
- rod
- measuring cylinder
- sliding
- threaded rod
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Abstract
The utility model discloses a gas chromatograph, including sampling air pocket, miniature air pump, quantitative measurement get device and chromatograph body, the end of bleeding of miniature air pump is connected with sampling air pocket through the exhaust tube, and graduated flask bottom is connected with intake pipe and outlet duct respectively, and the intake pipe is connected with miniature air pump exhaust end, is equipped with the solenoid valve in the intake pipe, and the outlet duct is connected with chromatograph body, is equipped with the air outlet valve on the outlet duct; sliding sleeve is equipped with first sliding sleeve on the threaded rod, sliding connection has the second sliding sleeve on the slide bar, the second sliding sleeve passes through the connecting rod rigid coupling with first sliding sleeve and is in the same place, the second sliding sleeve is kept away from connecting rod one side level and is equipped with the pointer corresponding with the scale mark, the horizontal rigid coupling in one side that the connecting rod was kept away from to first sliding sleeve has the last contact piece with the pointer co-altitude, it is equipped with the contact switch of control solenoid valve switch to go up the contact piece downside, swing joint has the piston in the graduated cylinder, the side rigid coupling has C type pole on the piston, the one end that the piston was kept away from to C type.
Description
Technical Field
The utility model belongs to the technical field of the experimental facilities, particularly, be a gas chromatograph.
Background
The chromatographic analysis method is a separation and analysis method, and has a wide application in the fields of analytical chemistry, organic chemistry, biochemistry and the like, wherein the chromatographic analysis method is divided into a gas chromatography, a liquid chromatography, a gas-solid chromatography, a gas-liquid chromatography, a liquid-solid chromatography and a liquid-liquid chromatography according to the states of two phases, namely a mobile phase and a stationary phase, in the chromatographic analysis process, wherein the gas chromatography is generally adopted for analysis when the composition of gases such as natural gas is analyzed, and the adopted instrument is the gas chromatograph.
At present, when a gas chromatograph is used for analyzing a gas sample, the adopted sampling method is generally a method for manually extruding a sampling air bag, and the manual extrusion of the sampling air bag cannot be accurately controlled due to the extrusion force of an operator, so that the analysis result of data can be influenced due to different gas amounts sent each time.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a solve the not enough gas chromatograph among the prior art. In order to realize the technical purpose, the utility model discloses a technical scheme as follows:
a gas chromatograph comprises a sampling air bag, a miniature air pump, a quantitative measuring device and a chromatograph body, wherein the air exhaust end of the miniature air pump is connected with the sampling air bag through an air exhaust pipe, and the quantitative measuring device comprises a measuring cylinder, a threaded rod and a sliding rod which are positioned on one side of the measuring cylinder and arranged in parallel; the measuring cylinder is provided with scale marks on the circumferential surface, the bottom end of the measuring cylinder is respectively connected with an air inlet pipe and an air outlet pipe, the air inlet pipe is connected with the exhaust end of the miniature air pump, the air inlet pipe is provided with an electromagnetic valve, the air outlet pipe is connected with the chromatograph body, and the air outlet pipe is provided with an air outlet valve; the device comprises a threaded rod, a measuring cylinder, a sliding rod, a first sliding sleeve, a second sliding sleeve, a pointer, an upper contact piece and a contact switch, wherein the threaded rod and the measuring cylinder are arranged in parallel, the sliding rod is positioned between the threaded rod and the measuring cylinder, the threaded rod is sleeved with the first sliding sleeve in a sliding manner, the threaded rod is further connected with two positioning nuts positioned on the lower side of the first sliding sleeve in a threaded manner, the sliding rod is connected with the second sliding sleeve in a sliding manner, the second sliding sleeve and the first sliding sleeve are fixedly connected together through a connecting rod, one side, away from the connecting rod, of the second sliding sleeve is horizontally provided with the pointer corresponding to; swing joint has the piston in the graduated flask, the side rigid coupling has C type pole on the piston, the one end that the piston was kept away from to C type pole is located the graduated flask outside and the rigid coupling has lower contact, lower contact is located under the contact switch.
Further inject, the sampling air pocket bottom is equipped with the connector, be equipped with the air feed valve on the connector, the connector is dismantled with the exhaust tube and is connected.
Further limited, the air outlet valve is a manual valve.
Further defined, the supply air valve is a manual valve.
Further, the measuring cylinder is made of transparent materials.
Further limiting, a support plate is fixedly connected to the bottom ends of the threaded rod and the slide rod together, and the support plate is fixedly connected to the bottom side face of the measuring cylinder.
Further, a hydraulic rod is vertically arranged above the measuring cylinder, and the length of the hydraulic rod is not less than the depth inside the measuring cylinder.
Has the advantages that:
remove first sliding sleeve, make the pointer indicate on the scale mark of required volume, and with the position of the fixed first sliding sleeve of set nut locking on the threaded rod, later open the solenoid valve, close the air outlet valve, open the air feed valve, start miniature air pump, the gas appearance in the sample gas pocket is sent into the graduated flask and is driven the piston and rise, lower contact rises with the piston is synchronous, after the contact switch is contacted to lower contact piece (also be exactly after the position that lower contact piece and piston rose the pointer), the solenoid valve is closed, the gas appearance ration of volume in the graduated flask this moment, open the air outlet valve at last, bottom in the piston is pushed down to the graduated flask to extension through the hydraulic stem, send quantitative gas appearance into the analysis in the chromatograph body.
Drawings
The present invention can be further illustrated by the non-limiting examples given in the accompanying drawings;
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a partial structure of the present invention;
the main element symbols are as follows:
the device comprises a sampling air bag 1, a micro air pump 2, a chromatograph body 3, a connecting port 4, an air supply valve 5, an exhaust tube 6, a measuring cylinder 7, an air inlet tube 8, an electromagnetic valve 9, an air outlet tube 10, an air outlet valve 11, a threaded rod 12, a first sliding sleeve 13, a positioning nut 14, a sliding rod 15, a second sliding sleeve 16, a connecting rod 17, a pointer 18, an upper contact piece 19, a contact switch 20, a lower contact piece 21, a support plate 22, a piston 23, a C-shaped rod 24 and a hydraulic rod 25.
Detailed Description
In order to make the present invention better understood by those skilled in the art, the technical solutions of the present invention are further described below with reference to the accompanying drawings and examples.
As shown in fig. 1 and 2, a gas chromatograph comprises a sampling air bag 1, a micro air pump 2, a quantitative measuring device and a chromatograph body 3, wherein the air exhaust end of the micro air pump 2 is connected with the sampling air bag 1 through an air exhaust tube 6, and the quantitative measuring device comprises a measuring cylinder 7, a threaded rod 12 and a sliding rod 15 which are positioned on one side of the measuring cylinder 7 and are arranged in parallel; the circumference of the measuring cylinder 7 is provided with scale marks (not shown in the figure), the bottom end of the measuring cylinder 7 is respectively connected with an air inlet pipe 8 and an air outlet pipe 10, the air inlet pipe 8 is connected with the exhaust end of the micro air pump 2, the air inlet pipe 8 is provided with an electromagnetic valve 9, the air outlet pipe 10 is connected with the chromatograph body 3, and the air outlet pipe 10 is provided with an air outlet valve 11; the threaded rod 12 and the measuring cylinder 7 are arranged in parallel, the sliding rod 15 is positioned between the threaded rod 12 and the measuring cylinder 7, the threaded rod 12 is sleeved with a first sliding sleeve 13 in a sliding manner, the threaded rod 12 is further connected with two positioning nuts 14 positioned on the upper side and the lower side of the first sliding sleeve 13 in a threaded manner, the sliding rod 15 is connected with a second sliding sleeve 16 in a sliding manner, the second sliding sleeve 16 is fixedly connected with the first sliding sleeve 13 through a connecting rod 17, one side, away from the connecting rod 17, of the second sliding sleeve 16 is horizontally provided with a pointer 18 corresponding to a scale mark, one side, away from the connecting rod 17, of the first sliding sleeve 13 is horizontally and fixedly connected with an upper contact piece 19 with the same height as the; piston 23 is movably connected in graduated flask 7, and the side is fixed with C type pole 24 on piston 23, and the one end that C type pole 24 kept away from piston 23 is located graduated flask 7 outside and fixed with lower contact 21, and lower contact 21 is located under contact switch 20.
Specifically, the bottom end of the sampling air bag 1 is provided with a connecting port 4, the connecting port 4 is provided with an air supply valve 5, and the connecting port 4 is detachably connected with an exhaust tube 6.
Specifically, the air outlet valve 11 is a manual valve, the air supply valve 5 is a manual valve, the measuring cylinder 7 is made of transparent materials, the bottom ends of the threaded rod 12 and the sliding rod 15 are fixedly connected with a support plate 22, and the support plate 22 is fixedly connected with the bottom side face of the measuring cylinder 7.
Specifically, a hydraulic rod 25 is vertically arranged above the measuring cylinder 7, and the length of the hydraulic rod 25 is not less than the depth inside the measuring cylinder 7.
The working principle is as follows: the first sliding sleeve 13 is moved to enable the pointer 18 to point on a scale mark which needs to be measured, the position of the first sliding sleeve 13 on the threaded rod 12 is locked and fixed through the positioning nut 14, then the electromagnetic valve 9 is opened, the air outlet valve 11 is closed, the air supply valve 5 is opened, the micro air pump 2 is started, the air sample in the sampling air bag 1 is sent into the measuring cylinder 7 and drives the piston 23 to ascend, the lower contact piece 21 and the piston 23 ascend synchronously, after the lower contact piece 21 contacts the contact switch 20 (namely, after the lower contact piece 21 and the piston 23 ascend to the position of the pointer 18), the electromagnetic valve 9 is closed, the amount of the air sample measured in the measuring cylinder 7 is determined at the moment, then the micro air pump 2 is closed, finally the air outlet valve 11 is opened, the piston 23 is pressed to the inner bottom of the measuring cylinder 7 through the extension of the hydraulic rod 25, and the.
The above is to the gas chromatograph provided by the utility model has been introduced in detail. The description of the specific embodiments is only intended to facilitate an understanding of the method of the invention and its core ideas. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (7)
1. A gas chromatograph comprises a sampling air bag, a miniature air pump, a quantitative measuring device and a chromatograph body, and is characterized in that the air exhaust end of the miniature air pump is connected with the sampling air bag through an air exhaust pipe, and the quantitative measuring device comprises a measuring cylinder, a threaded rod and a sliding rod, wherein the threaded rod and the sliding rod are positioned on one side of the measuring cylinder and are arranged in parallel;
the measuring cylinder is provided with scale marks on the circumferential surface, the bottom end of the measuring cylinder is respectively connected with an air inlet pipe and an air outlet pipe, the air inlet pipe is connected with the exhaust end of the miniature air pump, the air inlet pipe is provided with an electromagnetic valve, the air outlet pipe is connected with the chromatograph body, and the air outlet pipe is provided with an air outlet valve;
the device comprises a threaded rod, a measuring cylinder, a sliding rod, a first sliding sleeve, a second sliding sleeve, a pointer, an upper contact piece and a contact switch, wherein the threaded rod and the measuring cylinder are arranged in parallel, the sliding rod is positioned between the threaded rod and the measuring cylinder, the threaded rod is sleeved with the first sliding sleeve in a sliding manner, the threaded rod is further connected with two positioning nuts positioned on the lower side of the first sliding sleeve in a threaded manner, the sliding rod is connected with the second sliding sleeve in a sliding manner, the second sliding sleeve and the first sliding sleeve are fixedly connected together through a connecting rod, one side, away from the connecting rod, of the second sliding sleeve is horizontally provided with the pointer corresponding to;
swing joint has the piston in the graduated flask, the side rigid coupling has C type pole on the piston, the one end that the piston was kept away from to C type pole is located the graduated flask outside and the rigid coupling has lower contact, lower contact is located under the contact switch.
2. A gas chromatograph according to claim 1, wherein the sampling gas bag has a connection port at a bottom end thereof, the connection port being provided with a gas supply valve, the connection port being detachably connected to the gas extraction tube.
3. A gas chromatograph according to claim 1, wherein said gas outlet valve is a manual valve.
4. A gas chromatograph according to claim 2, wherein said gas supply valve is a manual valve.
5. A gas chromatograph according to claim 1, wherein said graduated cylinder is made of a transparent material.
6. The gas chromatograph of claim 1, wherein the threaded rod and the bottom end of the slide rod are fixedly connected to a support plate, and the support plate is fixedly connected to the bottom side surface of the measuring cylinder.
7. The gas chromatograph of claim 1, wherein a hydraulic rod is vertically disposed above the measuring cylinder, and the hydraulic rod extends for a length no less than an inner depth of the measuring cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921626988.7U CN211652723U (en) | 2019-09-27 | 2019-09-27 | Gas chromatograph |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921626988.7U CN211652723U (en) | 2019-09-27 | 2019-09-27 | Gas chromatograph |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211652723U true CN211652723U (en) | 2020-10-09 |
Family
ID=72681660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921626988.7U Expired - Fee Related CN211652723U (en) | 2019-09-27 | 2019-09-27 | Gas chromatograph |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211652723U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112747977A (en) * | 2020-12-22 | 2021-05-04 | 河南日兆勘测规划设计有限公司 | Gas sampling device for environment detection |
-
2019
- 2019-09-27 CN CN201921626988.7U patent/CN211652723U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112747977A (en) * | 2020-12-22 | 2021-05-04 | 河南日兆勘测规划设计有限公司 | Gas sampling device for environment detection |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201009 Termination date: 20210927 |