CN217717638U

CN217717638U - Sampling device for gas chromatograph

Info

Publication number: CN217717638U
Application number: CN202221465580.8U
Authority: CN
Inventors: 霍俊锋
Original assignee: Henan Xuyong Biotechnology Co ltd
Current assignee: Henan Xuyong Biotechnology Co ltd
Priority date: 2022-06-13
Filing date: 2022-06-13
Publication date: 2022-11-01
Anticipated expiration: 2032-06-13

Abstract

The utility model discloses a sampling device for gas chromatograph belongs to gas chromatograph technical field, specifically includes the base, and the top of base is equipped with the sampling box, is equipped with the aspiration pump on the sampling box, is equipped with the suction nozzle on the aspiration pump, and the end of giving vent to anger of aspiration pump is connected with the three-way valve, and the last intercommunication of three-way valve has the intake pipe, is equipped with the air supply pipe in the sampling box, and the below of air supply pipe still is equipped with the outlet duct, and the below of outlet duct still is equipped with the storage appearance jar, is equipped with the sealing plug in the storage appearance jar; the utility model discloses an aspiration pump, the intake pipe, air supply pipe and blast pipe can clear up the inside residual gas before to the device earlier, and the gas storage of gathering on the different positions is put different storage appearance jars inside again, stores up the gaseous intermixture of avoiding gathering in addition, reduces the degree of accuracy of sample, through the sealing plug, drive assembly and elastic component, are convenient for make the gas of sample enter into in the storage appearance jar to and be convenient for seal up storage appearance jar.

Description

Sampling device for gas chromatograph

Technical Field

The utility model belongs to the technical field of gas chromatograph, concretely relates to sampling device that gas chromatograph used.

Background

The chromatograph, in order to carry out chromatographic separation analysis device, including sample introduction system, detecting system, record and data processing system, temperature control system and mobile phase control system etc. modern chromatograph has characteristics such as stability, sensitivity, versatility and degree of automation etc. and has gas chromatograph, liquid chromatograph and gel chromatograph etc. these chromatographies are widely used in the analysis of chemical product, certain content of macromolecular material, gel chromatograph can also survey the molecular weight and the distribution of macromolecular material.

Need take a sample to pollutant concentration's in the atmosphere before the analysis, and current sampling device, the gas of the sample of different positions of being not convenient for distinguishes and stores, causes mixed pollution easily to reduce the analysis result.

SUMMERY OF THE UTILITY MODEL

To solve the problems set forth in the background art described above. The utility model provides a sampling device that gas chromatograph used has the gaseous characteristics that the gaseous intermix that are convenient for to different positions sample is polluted that store and avoid the sample is distinguished to the gas.

In order to achieve the above object, the utility model provides a following technical scheme: a sampling device for a gas chromatograph comprises a base, wherein travelling wheels are arranged below the base, a sampling box is arranged above the base, an air suction pump is arranged at the top of one side of the sampling box, an air suction nozzle is arranged at the air inlet end of the air suction pump, the air outlet end of the air suction pump extends into the sampling box and is communicated with a three-way valve, the other two ends of the three-way valve are communicated with air inlet pipes, a first valve is arranged on each air inlet pipe, the other end of each air inlet pipe is communicated with an air supply pipe through a first telescopic pipe, the air outlet end of each air supply pipe is communicated with an exhaust pipe through a second telescopic pipe, the air outlet end of each exhaust pipe extends to the outer side of the sampling box, a second valve is arranged on each exhaust pipe, a movable plate fixedly connected with the sampling box is arranged below the air supply pipe, a plurality of air outlet pipes penetrating below the movable plates are arranged below the air supply pipes, and a third valve is arranged on each air outlet pipe, the lower part of the gas outlet pipe is also provided with a sample storage tank, the top part of the sample storage tank is provided with a sample inlet pipe, a sealing plug is arranged below the sample inlet pipe in the sample storage tank, the bottom part of the moving plate is also provided with a driving component for driving the sealing plug to move, the driving component comprises a first sealing plate and a second sealing plate, the first fixing plate is fixedly connected with the moving plate, a dead slot for the gas outlet pipe to pass through is arranged on the first sealing plate, the second sealing plate is arranged below the first sealing plate and is parallel to and just opposite to the first sealing plate, the second sealing plate is fixedly connected with the first sealing plate through a plurality of fixing rods, an elastic component for resetting the sealing plug is also arranged in the sample storage tank, the elastic component comprises two connecting plates which are respectively arranged at the two sides of the sealing plug, a sealing cylinder is fixedly arranged above the two connecting plates on the sample storage tank, and a movable plate is movably connected inside the sealing cylinder, the bottom of fly leaf sets firmly the movable rod, and the low side of movable rod runs through to the below of sealed section of thick bamboo and with connecting plate fixed connection, is located the inside spring that still overlaps of sealed section of thick bamboo on the movable rod, the both ends of spring respectively with sealed section of thick bamboo and fly leaf fixed connection, one side bottom of storage appearance jar still is equipped with the sample tube.

Preferably, a filter screen is arranged inside the air suction nozzle.

Preferably, both ends of the two moving plates are fixedly connected through supporting plates, mounting plates are fixedly arranged below the two supporting plates on the sampling box, air cylinders are fixedly arranged above the mounting plates, and telescopic ends of the air cylinders are fixedly connected with the supporting plates.

Preferably, still be equipped with in the sampling case and be used for carrying out the fixed subassembly fixed to every sample storage tank, fixed subassembly includes first cardboard and second cardboard, first cardboard sets up between the sample storage tank of both sides, and bracing piece and sampling case fixed connection are passed through to the bottom of first cardboard, and the second splint are located the opposite side of sample storage tank, and just right one side of first cardboard and second cardboard has all seted up the arc wall, and the second splint pass through the bolt and are connected with first splint.

Preferably, the both sides of sampling case still all are equipped with sealing door, have seted up transparent observation window on the sealing door, still are equipped with the handle on the sealing door.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses an aspiration pump, the intake pipe, air supply pipe and blast pipe can clear up remaining gas earlier the device is inside, and the gas storage of gathering on the different positions is put inside the different sample storage jar again, stores up the gaseous intermixture of avoiding gathering in addition, reduces the degree of accuracy of sample, through the sealing plug, drive assembly and elastic component, be convenient for make the gas of sample enter into in the sample storage jar to and be convenient for seal the sample storage jar.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the principles of the invention. In the drawings:

FIG. 1 is a schematic structural view of a cross-sectional view of a perspective view of the present invention;

FIG. 2 is a schematic view of a partially enlarged view of the point A in FIG. 1 according to the present invention;

FIG. 3 is a schematic structural view of a top view cross-sectional view of the present invention;

in the figure: 1. a sampling box; 2. an air pump; 3. an air inlet pipe; 4. a first telescopic tube; 5. a gas supply pipe; 6. a second telescopic tube; 7. an exhaust pipe; 8. moving the plate; 9. an air outlet pipe; 10. a sample storage tank; 11. a sample inlet pipe; 12. a sealing plug; 13. a first sealing plate; 14. a second sealing plate; 15. fixing the rod; 16. a sealing cylinder; 17. a movable plate; 18. a movable rod; 19. a spring; 20. a sample discharge pipe; 21. a cylinder; 22. a first clamping plate; 23. a support bar; 24. a second card; 25. and (4) sealing the door.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Examples

Referring to fig. 1-3, the present embodiment provides the following technical solutions: the utility model provides a sampling device that gas chromatograph used, includes the base, and the below of base is equipped with the walking wheel, and the top of base is equipped with sampling box 1, through the walking wheel, can promote sampling box 1 transform sampling position, can sample the storage to the air of different positions, and the follow-up gas chromatograph that is convenient for detects through, has increased the accuracy that detects.

Sampling box 1's left side top is equipped with aspiration pump 2, the inlet end of aspiration pump 2 is equipped with the air exhaust mouth, the end of giving vent to anger of aspiration pump 2 extends to sampling box 1 inside and communicates there is the three-way valve, the other both ends of three-way valve all communicate there is intake pipe 3, be equipped with first valve in the intake pipe 3, the other end of intake pipe 3 communicates through first flexible pipe 4 has air supply pipe 5, the end of giving vent to anger of air supply pipe 5 has blast pipe 7 through the flexible pipe 6 intercommunication of second, the end of giving vent to anger of blast pipe 7 extends to the outside of sampling box 1, and be equipped with the second valve on blast pipe 7, through aspiration pump 2, intake pipe 3, air supply pipe 5 and blast pipe 7, can clear up the remaining gas before the device is inside earlier, the gas storage that gathers on the different positions is put inside different storage sample jar 10, and the gas that the storage was avoided gathering mixes each other, reduce the degree of accuracy of sample.

The inside filter screen that is equipped with of air extraction mouth through the filter screen, avoids outside dust to enter into inside aspiration pump 2 to influence later stage gas chromatograph's testing result.

The below that lies in air supply pipe 5 in sampling box 1 still is equipped with the movable plate 8 with sampling box 1 fixed connection, the below of air supply pipe 5 still is equipped with a plurality of outlet ducts 9 that run through to the 8 below of movable plate, all be equipped with the third valve on every outlet duct 9, the below of outlet duct 9 still is equipped with stores up appearance jar 10, the top of storing up appearance jar 10 is equipped with into appearance pipe 11, through controlling the third valve on the different outlet ducts 9, can make the sampling gas on the different positions enter into different inside the storage appearance jar 10.

All through backup pad fixed connection between the both ends of two movable plates 8, the below that lies in two backup pads on the sampling box 1 all has set firmly the mounting panel, and the top of mounting panel has set firmly cylinder 21, and cylinder 21's flexible end and backup pad fixed connection control cylinder 21 make movable plate 8 drive outlet duct 9 and are close to or keep away from sample introduction pipe 11.

A sealing plug 12 is arranged below the sample inlet pipe 11 in the sample storage tank 10, a driving assembly for driving the sealing plug 12 to move is further arranged at the bottom of the moving plate 8, the driving assembly comprises a first sealing plate 13 and a second sealing plate 14, the first fixing plate is fixedly connected with the moving plate 8, a hollow groove for the gas outlet pipe 9 to pass through is formed in the first sealing plate 13, the second sealing plate 14 is arranged below the first sealing plate 13 and is arranged opposite to the first sealing plate 13 in parallel, the second sealing plate 14 is fixedly connected with the first sealing plate 13 through a plurality of fixing rods 15, the fixing rods 15 are arranged along the outer edge of the gas outlet pipe 9 at uniform intervals, gas in the gas outlet pipe 9 enters the sample storage tank 10 through gaps between every two adjacent fixing rods 15, the second sealing plate 14 and the fixing rods 15 move along with the moving plate 8 through the first sealing plate 13, the second sealing plate 14 can extrude the sealing plug 12, the sealing plug 12 is close to or far away from the sample inlet pipe 11, the sample inlet pipe 11 is in an open state or a sealed state, and the gas outlet pipe 9 can conveniently feed the gas into the sample storage tank 10.

Still be equipped with the elastic component who is used for reseing to sealing plug 12 in the storage sample jar 10, elastic component includes two connecting plates, two connecting plates are located the both sides of sealing plug 12 respectively, the top that lies in two connecting plates on the storage sample jar 10 all has set firmly sealed barrel 16, the inside swing joint of sealed barrel 16 has fly leaf 17, the bottom of fly leaf 17 has set firmly movable rod 18, the low side of movable rod 18 runs through to the below of sealed barrel 16 and with connecting plate fixed connection, it still overlaps and is equipped with spring 19 still to lie in sealed barrel 16 inside on the movable rod 18, spring 19's both ends respectively with sealed barrel 16 and fly leaf 17 fixed connection, through the connecting plate, sealed barrel 16, fly leaf 17, movable rod 18 and spring 19, can drive first movable plate 13 and second closing plate 14 upward movement at 8, second closing plate 14 has disappeared to the extrusion that sealing plug 12 formed, can make sealing plug 12 reset, advance appearance pipe 11 and seal.

The bottom of one side of the sample storage tank 10 is also provided with a sample discharge pipe 20, and the gas chromatograph can detect the gas in the sample storage tank 10 through the sample discharge pipe 20.

Still be equipped with in sampling box 1 and be used for carrying out the fixed subassembly fixed to every sample storage tank 10, fixed subassembly includes first cardboard 22 and second cardboard 24, first cardboard 22 sets up between the sample storage tank 10 of both sides, bracing piece 23 and 1 fixed connection of sampling box are passed through to the bottom of first cardboard 22, the second splint are located the opposite side that stores up sample storage tank 10, and first cardboard 22 and the just right one side of second cardboard 24 have all seted up the arc wall, the second splint pass through the bolt and are connected with first splint, through first cardboard 22 and second cardboard 24, be convenient for carry out spacing fixed to sample storage tank 10, and be convenient for dismantle or install sample storage tank 10.

The both sides of sample box 1 all still are equipped with sealing door 25, have seted up transparent observation window on the sealing door 25, still are equipped with the handle on the sealing door 25, open sealing door 25, can take out or place storage sample jar 10, through transparent observation window, the workman of being convenient for observes sample box 1 inside.

The utility model discloses a theory of operation: a sealing door 25 is punched, one side of the sample storage tank 10 is placed in an arc-shaped groove of a first clamping plate 22, then a second clamping plate 24 is matched with the first clamping plate 22 through a bolt to fix the sample storage tank 10, the sealing door 25 is closed, then an air cylinder 21 is controlled, a moving plate 8 drives a first sealing plate 13 to move downwards, meanwhile, an air supply pipe 5 is driven to move along with the moving plate 8 through a first telescopic pipe 4 and a second telescopic pipe 6 until the first sealing plate 13 enters the sample inlet pipe 11, meanwhile, a sealing plug 12 is driven by a second sealing plate 14 to move downwards, the sealing plug 12 is far away from the sample inlet pipe 11, the sample inlet pipe 11 is in an open state, then an air suction pump 2 is controlled to suck outside air, a first valve on a corresponding air inlet pipe 3 is controlled, air enters the air supply pipe 5, then a third valve on a first air outlet pipe 9 on the left side is controlled, air enters the left sample storage tank 10, the air pump 2 is closed, the device is moved, similarly, outside air enters the air supply pipe 5, then the second valve on the corresponding exhaust pipe 7 is controlled, new air washes residual air when the device extracts air last time, the residual air is discharged out of the sampling box 1, after one end of time of extraction, the second valve is closed, the third valve on the new air outlet pipe 9 is opened, new air enters the new sample storage tank 10, after the sampling is finished, the air pump is closed, meanwhile, the control cylinder 21 is reset, the moving plate 8 drives the first sealing plate 13 and the second sealing plate 14 to move upwards, meanwhile, under the elastic action of the spring 19, the sealing plug 12 is reset along with the moving rod 18 and the moving plate 17 until the second sealing plate 14 is separated from the sample storage tank, the sealing plug 12 seals the sample storage tank 10, when the sealing door 25 is opened and the gas in the sample storage tank 10 is detected, the sample introduction end of the gas chromatograph is connected with the sample discharge pipe 20 of the sample storage tank 10 to detect the gas.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A sampling device for a gas chromatograph, characterized in that: comprises a base, wherein a travelling wheel is arranged below the base, a sampling box (1) is arranged above the base, an air suction pump (2) is arranged at the top of one side of the sampling box (1), an air suction nozzle is arranged at the air inlet end of the air suction pump (2), the air outlet end of the air suction pump (2) extends into the sampling box (1) and is communicated with a three-way valve, the other two ends of the three-way valve are communicated with an air inlet pipe (3), a first valve is arranged on the air inlet pipe (3), the other end of the air inlet pipe (3) is communicated with an air supply pipe (5) through a first telescopic pipe (4), the air outlet end of the air supply pipe (5) is communicated with an exhaust pipe (7) through a second telescopic pipe (6), and the air outlet end of the exhaust pipe (7) extends to the outer side of the sampling box (1), and be equipped with the second valve on blast pipe (7), the below that is located air supply pipe (5) in sampling box (1) still is equipped with movable plate (8) with sampling box (1) fixed connection, the below of air supply pipe (5) still is equipped with a plurality of outlet ducts (9) that run through to movable plate (8) below, all be equipped with the third valve on every outlet duct (9), the below of outlet duct (9) still is equipped with stores up appearance jar (10), the top of storing up appearance jar (10) is equipped with into appearance pipe (11), it is equipped with sealing plug (12) to be located into appearance pipe (11) below in storage appearance jar (10), the bottom of movable plate (8) still is equipped with the drive group who is used for driving sealing plug (12) to remove The piece, drive assembly includes first closing plate (13) and second closing plate (14), first fixed plate and movable plate (8) fixed connection, and set up the dead slot that supplies trachea (9) to pass on first closing plate (13), second closing plate (14) are located the below of first closing plate (13) and are just to setting up with first closing plate (13) parallel, through a plurality of dead lever (15) fixed connection between second closing plate (14) and first closing plate (13), still be equipped with in storage appearance jar (10) and be used for carrying out the elastic component that resets to sealing plug (12), elastic component includes two connecting plates, and two connecting plates are located the both sides of sealing plug (12) respectively, and the top that lies in two connecting plates on storage appearance jar (10) all sets firmly sealing barrel (16), and sealing barrel (16) inside activity is connected with movable plate (17), and the bottom of movable rod (18) has set firmly, and the low side of movable rod (18) runs through to the below of sealing barrel (16) and with connecting plate fixed connection, and the lower part of movable rod (18) is located sealing barrel (16) still, and the bottom of sealing barrel (19) is equipped with spring and still is equipped with storage appearance jar (10) one side, and still the spring tube (19) is equipped with the bottom of storage appearance jar (16) and still is equipped with the spring (19) and is equipped with the bottom of movable plate (16) fixed connection.

2. A sampling device for a gas chromatograph according to claim 1, wherein: and a filter screen is arranged in the air suction nozzle.

3. A sampling device for a gas chromatograph according to claim 1, wherein: all through backup pad fixed connection between the both ends of two movable plates (8), the below that lies in two backup pads on sampling box (1) all has set firmly the mounting panel, and the top of mounting panel has set firmly cylinder (21), the flexible end and the backup pad fixed connection of cylinder (21).

4. A sampling device for a gas chromatograph according to claim 1, wherein: still be equipped with in sampling box (1) and be used for carrying out the fixed subassembly fixed to every sample storage jar (10), fixed subassembly includes first cardboard (22) and second cardboard (24), first cardboard (22) set up between sample storage jar (10) of both sides, and bracing piece (23) and sampling box (1) fixed connection are passed through to the bottom of first cardboard (22), and the second splint are located the opposite side of sample storage jar (10), and just right one side of first cardboard (22) and second cardboard (24) has all seted up the arc wall, and the second splint pass through the bolt and are connected with first splint.

5. A sampling device for a gas chromatograph according to claim 1, wherein: the both sides of sample box (1) still all are equipped with sealing door (25), have seted up transparent observation window on sealing door (25), still are equipped with the handle on sealing door (25).