CN212932516U

CN212932516U - Automatic sample introduction device for gas chromatography

Info

Publication number: CN212932516U
Application number: CN202021915821.5U
Authority: CN
Inventors: 童吉庆; 张艳; 林江涛
Original assignee: Hangzhou Yixiang Chemical Technology Co Ltd
Current assignee: Hangzhou Yixiang Chemical Technology Co Ltd
Priority date: 2020-09-04
Filing date: 2020-09-04
Publication date: 2021-04-09
Anticipated expiration: 2030-09-04

Abstract

The utility model discloses a gas chromatography autoinjection device belongs to analytical instrument technical field. An automatic sample introduction device for gas chromatography comprises a gas chromatograph and a sample introduction port, wherein a top plate is arranged at the upper end of the gas chromatograph, a support column is fixedly connected to the lower end of the top plate, an electric telescopic rod corresponding to the support column is fixedly mounted at the upper end of the gas chromatograph, the lower end of the support column is fixedly connected to the output end of the electric telescopic rod, a cylinder is rotatably connected to the lower end of the top plate, a disc is fixedly connected to the lower end of the cylinder, a plurality of uniformly-distributed placing grooves are formed in the outer wall of the circumference of the disc, a telescopic cylinder corresponding to one of the placing grooves is fixedly mounted at the lower end of the top plate, buckling devices are arranged in the placing grooves, and an automatic transposition device is; the utility model discloses can place a plurality of syringes simultaneously to change that can be nimble has reduced the change frequency of syringe.

Description

Automatic sample introduction device for gas chromatography

Technical Field

The utility model relates to an analytical instrument technical field especially relates to a gas chromatography autoinjection device.

Background

The gas chromatograph is an instrument for qualitatively and quantitatively analyzing a multi-component complex mixture by utilizing a chromatographic separation technology and a detection technology, and can be generally used for analyzing organic matters which are thermally stable in fine chemical engineering and have a boiling point within 300 ℃, such as volatile organic matters, organic solvents, aromatic ring compounds, heterocyclic ring compounds and the like.

The existing gas chromatograph mostly uses the injector to inject samples through manual work, the operation is not convenient enough, although some gas chromatographs have the automatic sample injection device, the injector can be placed in the sample injection device at each time, when the sample in the injector is used up, the injector needs to be replaced manually, the use is inconvenient, and the analysis efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects in the prior art and providing an automatic sample introduction device for gas chromatography.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a gas chromatography autoinjection device, includes gas chromatograph and introduction port, gas chromatograph's upper end is equipped with the roof, the lower extreme fixedly connected with support column of roof, gas chromatograph's upper end fixed mounting has the electric telescopic handle who corresponds with the support column, and the lower extreme fixed connection of support column is at electric telescopic handle's output, the lower extreme of roof rotates and is connected with the cylinder, columniform lower extreme fixedly connected with disc, the circumference outer wall of disc is equipped with a plurality of evenly distributed's standing groove, the standing groove cooperatees with the shape of syringe, the lower extreme fixed mounting of roof has the telescopic cylinder who corresponds with one of them standing groove position, and is a plurality of all be equipped with buckle device in the standing groove, be equipped with the automatic transposition device between roof and the cylinder.

Preferably, the buckling device comprises two sliding grooves which are arranged on the left side wall of the placing groove and are symmetrical up and down, the sliding grooves are connected with sliding rods in a sliding mode, the sliding rods are elastically connected with the left side wall of the sliding grooves through jacking springs, a clamping groove matched with the sliding rods is formed in the right side wall of the placing groove, and the sliding rods are fixedly connected through push rods.

Preferably, the automatic transposition device comprises a driving motor fixedly installed at the upper end of the top plate, the output end of the driving motor extends to the lower end of the top plate and is fixedly connected with a driving gear, and the outer wall of the upper end of the disc is fixedly connected with a ring gear meshed with the driving gear.

Preferably, the inner wall of the sliding rod is fixedly connected with an arc-shaped convex block.

Preferably, the material of the cambered surface bump is rubber.

Preferably, the driving motor is a servo motor.

Preferably, the outer wall of the driving gear and the outer wall of the ring gear are sleeved with protective covers.

Compared with the prior art, the utility model provides a gas chromatography autoinjection device possesses following beneficial effect:

1. this gas chromatography autoinjection device slides to the left side through the push rod with two slide bars, then with the syringe card advance the standing groove in, then the pine hand push rod, two slide bars can elastic reset under the effect of the tight spring in top to the card advances in the draw-in groove to with the quick standing groove of fixing to of syringe in, then all place other standing grooves through this mode with a plurality of syringes in, the fixed convenient and fast of syringe.

2. This gas chromatography autoinjection device, when there is not the sample in the syringe of telescopic cylinder lower extreme, start driving motor, driving motor can drive driven ring gear through the driving gear and rotate, driven ring gear can drive the disc through the cylinder and rotate, when another syringe of disc outer wall is located telescopic cylinder's lower extreme, stop driving motor and can accomplish the quick replacement of syringe, it is more convenient to make the change of syringe, the time of waste when the syringe is changed has significantly reduced.

Drawings

Fig. 1 is a schematic structural view of an automatic sample introduction device for gas chromatography according to the present invention;

fig. 2 is a schematic diagram of a disc overlooking structure of an automatic sample introduction device for gas chromatography provided by the present invention;

fig. 3 is a schematic structural diagram of a position a in fig. 2 of an automatic sample introduction device for gas chromatography according to the present invention;

fig. 4 is a schematic diagram of a right-side view local structure of a disc of the automatic sample introduction device for gas chromatography provided by the utility model.

In the figure: 1. a gas chromatograph; 2. a sample inlet; 3. a top plate; 4. a support pillar; 5. an electric telescopic rod; 6. a cylinder; 7. a disc; 8. a telescopic cylinder; 9. a placement groove; 10. a chute; 11. a slide bar; 12. the spring is tightly propped; 13. a card slot; 14. a push rod; 15. a drive motor; 16. a driving gear; 17. a ring gear; 18. a protective cover is arranged; 19. and a cambered surface bump.

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.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Example (b):

referring to fig. 1-4, an automatic sample introduction device for gas chromatography comprises a gas chromatograph 1 and a sample introduction port 2, wherein a top plate 3 is arranged at the upper end of the gas chromatograph 1, a support column 4 is fixedly connected at the lower end of the top plate 3, an electric telescopic rod 5 corresponding to the support column 4 is fixedly arranged at the upper end of the gas chromatograph 1, the lower end of the support column 4 is fixedly connected at the output end of the electric telescopic rod 5, a cylinder 6 is rotatably connected at the lower end of the top plate 3, a disc 7 is fixedly connected at the lower end of the cylinder 6, a plurality of uniformly distributed placing grooves 9 are arranged on the circumferential outer wall of the disc 7, the placing grooves 9 are matched with the shape of an injector, a telescopic cylinder 8 corresponding to one of, can be convenient insert the syringe and take out introduction port 2 through electric telescopic handle 5, telescopic cylinder 8 mainly starts the effect of pressing of syringe.

All be equipped with buckle device in a plurality of standing grooves 9, buckle device is including setting up two longitudinal symmetry's at standing groove 9 left side wall spout 10, equal sliding connection has and slide bar 11 in two spout 10, through top tension spring 12 elastic connection between the left side wall of slide bar 11 and spout 10, standing groove 9's right side wall is equipped with draw-in groove 13 with slide bar 11 complex, slide two slide bars 11 to the left side through push rod 14, then with the syringe card enter standing groove 9 in, then pine hand push rod 14, two slide bars 11 can be in the effect of top tension spring 12 elasticity reset, and the card enters draw-in groove 13 in, thereby with the quick standing groove 9 of fixing of syringe, then all place other standing grooves 9 with a plurality of syringes through this mode in, the fixed convenient and fast of syringe.

An automatic transposition device is arranged between the top plate 3 and the column 6 which are fixedly connected between the two slide bars 11 through a push rod 14, the automatic transposition device comprises a driving motor 15 which is fixedly arranged at the upper end of the top plate 3, the output end of the driving motor 15 extends to the lower end of the top plate 3 and is fixedly connected with a driving gear 16, the outer wall of the upper end of the disc 7 is fixedly connected with a ring gear 17 which is meshed with the driving gear 16, when no sample exists in the injector at the lower end of the telescopic cylinder 8, the driving motor 15 is started, the driving motor 15 drives the driven ring gear 17 to rotate through the driving gear 16, the driven ring gear 17 can drive the disc 7 to rotate through the cylinder 6, when another injector on the outer wall of the disc 7 is positioned at the lower end of the telescopic cylinder 8, the driving motor 15 is stopped to finish the quick replacement of the injector, so that the replacement of the injector is more convenient, and the time wasted in replacing the injector is greatly reduced.

The inner wall fixedly connected with cambered surface lug 19 of slide bar 11, cambered surface lug 19's material is rubber, when in putting the groove 9 with the syringe card through slide bar 11, cambered surface lug 19 can be more inseparable and stable the top of syringe in the standing groove 9.

The driving motor 15 is a servo motor, and the rotating speed and the angle of the servo motor are conveniently controlled, so that the syringe is more accurately replaced.

The outer walls of the driving gear 16 and the ring gear 17 are sleeved with a protective cover 18 to play a protective role.

The working principle is as follows: in the utility model, when the color phase chromatograph is needed to be used, the two slide bars 11 slide to the left side through the push bar 14, then the injector is clamped into the placing groove 9, then the push bar 14 is loosened, the two slide bars 11 can elastically reset under the action of the jacking spring 12 and are clamped into the clamping groove 13, thereby the injector is rapidly fixed into the placing groove 9, then a plurality of injectors are placed into other placing grooves 9 through the mode, then the electric telescopic rod 5 drives the top plate 3 to slide downwards, the injector at the lower end of the telescopic cylinder 8 is inserted into the sample inlet 2, then the telescopic cylinder 8 is started to extrude the injector at the lower end, thereby the automatic sample introduction device is realized, when no sample exists in the injector at the lower end of the telescopic cylinder 8, the driving motor 15 is started, the driving motor 15 can drive the driven ring gear 17 to rotate through the driving gear 16, driven ring gear 17 can drive disc 7 through cylinder 6 and rotate, and when another syringe of disc 7 outer wall was located telescopic cylinder 8's lower extreme, stop driving motor 15 and can accomplish the quick replacement of syringe, made the change of syringe more convenient, the time of waste when the syringe that has significantly reduced was changed.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a gas chromatography autoinjection device, includes gas chromatograph (1) and introduction port (2), its characterized in that, the upper end of gas chromatograph (1) is equipped with roof (3), the lower extreme fixedly connected with support column (4) of roof (3), the upper end fixed mounting of gas chromatograph (1) has electric telescopic handle (5) that correspond with support column (4), and the lower extreme fixed connection of support column (4) is at the output of electric telescopic handle (5), the lower extreme of roof (3) rotates and is connected with cylinder (6), the lower extreme fixedly connected with disc (7) of cylinder (6), the circumference outer wall of disc (7) is equipped with a plurality of evenly distributed's standing groove (9), standing groove (9) cooperate with the shape of syringe, the lower extreme fixed mounting of roof (3) has telescopic cylinder (8) that correspond with one of them standing groove (9) position, a plurality of buckle devices are arranged in the placing grooves (9), and an automatic transposition device is arranged between the top plate (3) and the cylinder (6).

2. The automatic sample introduction device for the gas chromatography according to claim 1, wherein the buckling device comprises two sliding grooves (10) which are arranged on the left side wall of the placing groove (9) and are symmetrical up and down, the two sliding grooves (10) are connected with sliding rods (11) in a sliding manner, the sliding rods (11) are elastically connected with the left side wall of the sliding grooves (10) through tightening springs (12), the right side wall of the placing groove (9) is provided with clamping grooves (13) matched with the sliding rods (11), and the two sliding rods (11) are fixedly connected with each other through push rods (14).

3. The automatic sample introduction device for the gas chromatography is characterized in that the automatic transposition device comprises a driving motor (15) fixedly installed at the upper end of the top plate (3), the output end of the driving motor (15) extends to the lower end of the top plate (3) and is fixedly connected with a driving gear (16), and the outer wall of the upper end of the disc (7) is fixedly connected with a ring gear (17) meshed with the driving gear (16).

4. The automatic sample introduction device for gas chromatography according to claim 2, wherein a cambered surface bump (19) is fixedly connected to the inner wall of the slide bar (11).

5. The automatic sample introduction device for gas chromatography according to claim 4, wherein the cambered surface bump (19) is made of rubber.

6. A gas chromatography autosampler device according to claim 3, characterized in that said drive motor (15) is a servo motor.

7. The automatic sample introduction device for gas chromatography according to claim 3, wherein the outer walls of the driving gear (16) and the ring gear (17) are sleeved with a protective cover (18).