CN211825877U

CN211825877U - Sample introduction device for gas chromatograph

Info

Publication number: CN211825877U
Application number: CN202020165557.1U
Authority: CN
Inventors: 许天军
Original assignee: Eastern Liaoning University
Current assignee: Eastern Liaoning University
Priority date: 2020-02-13
Filing date: 2020-02-13
Publication date: 2020-10-30
Anticipated expiration: 2030-02-13

Abstract

The utility model relates to a gas chromatography technical field especially relates to a sampling device that gas chromatograph used, including the injector body, the perisporium middle part of injector body is provided with nylon cloth, and nylon cloth's one end is provided with the hasp, has seted up a plurality of evenly distributed on the nylon cloth and has used with the hasp cooperation. The nylon cloth is arranged outside the sample injector body, the supporting rods are arranged on the nylon cloth and connected with the supporting plate with the vacuum chuck, and the supporting plate with the vacuum chuck is fixed on the chromatograph, so that the sample injector body is fixed; simultaneously we have set up the sucking disc that has elastic telescopic rod, adsorb on the chromatograph, under elastic telescopic rod's effect, the injector body extrudees towards the chromatograph, has improved the steadiness of injector body. The utility model discloses, through setting up vacuum chuck to fix the injector body on the chromatograph through vacuum chuck, and set up firm mechanism, improve the stability of injector body, the beneficial effect is obvious, is fit for promoting.

Description

Sample introduction device for gas chromatograph

Technical Field

The utility model relates to a gas chromatography technical field especially relates to a sampling device that gas chromatograph used.

Background

The gas chromatograph is an instrument for qualitatively and quantitatively analyzing a multi-component complex mixture by using a chromatographic separation technology and a detection technology. Can be used for analyzing heat-stable organic matters with the boiling point not more than 500 ℃ in soil, such as volatile organic matters, organic chlorine, organic phosphorus, polycyclic aromatic hydrocarbons, phthalate ester and the like. The existing gas chromatograph needs a sample introduction device to introduce a sample to the gas chromatograph when introducing a sample, but the existing sample introduction device leads to poor stability of the sample introduction device due to lack of a stabilizing device, is easy to shake, and can cause the problem of gas leakage when introducing a sample. Therefore, a sample injection device for a gas chromatograph is designed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the feeding device in the prior art lacks a stabilizing device, and the gas leakage can occur during feeding, and providing a sample introduction device for a gas chromatograph.

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

a sample injection device for a gas chromatograph is designed, which comprises a sample injector body, wherein nylon cloth is arranged in the middle of the peripheral wall of the sample injector body, one end of the nylon cloth is provided with a lock catch, the nylon cloth is provided with a plurality of holes which are uniformly distributed and matched with the lock catch for use, a supporting rod is fixedly arranged on the nylon cloth, a supporting plate is fixedly welded at one end of the supporting rod away from the nylon cloth, vacuum chucks are fixedly arranged at four corners of the supporting plate, stabilizing mechanisms are arranged at the upper end and the lower end of the sample injector body, the stabilizing mechanism comprises a rotating ring fixedly sleeved on the outer wall of the sample injector body, a positioning mechanism is arranged between the rotating ring and the sample injector body, the fixed welding has elastic telescopic rod on the lateral wall of rotation ring, elastic telescopic rod's normal length is less than the length of bracing piece, the one end fixed mounting that elastic telescopic rod kept away from the rotation ring has the sucking disc.

Preferably, the nylon cloth is sleeved with a square frame clamping piece, and the square frame clamping piece is fixedly welded with the supporting rod.

Preferably, the positioning mechanism comprises a right-angle folding rod fixedly welded on the rotating ring, the top end of the right-angle folding rod is in threaded connection with a threaded rod, a wheel disc is fixedly welded at the top end of the threaded rod, a rotary disc is fixedly mounted at the bottom end of the threaded rod, an extrusion plate is fixedly mounted at the bottom end of the rotary disc, and an anti-slip pad is fixedly adhered to the bottom surface of the extrusion plate.

Preferably, a protective rubber pad is clamped between the sample injector body and the nylon cloth.

Preferably, the elastic telescopic rod comprises a sliding sleeve and a sliding rod, the sliding rod is arranged in the sliding sleeve in a sliding mode, a tension spring is arranged inside the sliding sleeve, and two ends of the tension spring are connected with the sliding rod and the sliding sleeve respectively.

The utility model provides a pair of sampling device that gas chromatograph used, beneficial effect lies in: according to the sample feeding device for the gas chromatograph, nylon cloth is arranged outside a sample feeding device body, a supporting rod is arranged on the nylon cloth and connected with a supporting plate with a vacuum sucker, and the supporting plate with the vacuum sucker is fixed on the chromatograph, so that the sample feeding device body is fixed; simultaneously we have set up the sucking disc that has elastic telescopic rod, adsorb on the chromatograph, under elastic telescopic rod's effect, the injector body extrudees towards the chromatograph, has improved the steadiness of injector body. The utility model discloses, through setting up vacuum chuck to fix the injector body on the chromatograph through vacuum chuck, and set up firm mechanism, improve the stability of injector body, the beneficial effect is obvious, is fit for promoting.

Drawings

Fig. 1 is a schematic front view of a sample injection device for a gas chromatograph according to the present invention;

fig. 2 is a schematic top view of a sample injection device for a gas chromatograph according to the present invention;

FIG. 3 is an enlarged view of the part A of FIG. 1;

fig. 4 is the utility model provides a sample injection device's that gas chromatograph used elasticity telescopic link section structure sketch map.

In the figure: 1 sample injector body, 2 nylon cloth, 3 latches, 4 holes, 5 support rods, 6 support plates, 7 vacuum suction cups, 8 rotating rings, 9 elastic telescopic rods, 10 suction cups, 11 square clamping pieces, 12 right-angle folding rods, 13 threaded rods, 14 wheel discs, 15 rotating discs, 16 extrusion plates, 17 non-slip mats, 18 protective rubber mats, 19 sliding sleeves, 20 sliding rods and 21 tension springs.

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.

Example 1

Referring to fig. 1-4, a sample injection device for a gas chromatograph comprises a sample injector body 1, a nylon cloth 2 is arranged in the middle of the peripheral wall of the sample injector body 1, a protective rubber pad 18 is clamped between the sample injector body 1 and the nylon cloth 2, a lock catch 3 is arranged at one end of the nylon cloth 2, a plurality of holes 4 which are uniformly distributed and matched with the lock catch 3 for use are arranged on the nylon cloth 2, a support rod 5 is fixedly arranged on the nylon cloth 2, a support plate 6 is fixedly welded at one end of the support rod 5 far away from the nylon cloth 2, vacuum suckers 7 are fixedly arranged at four corners of the support plate 6, the nylon cloth 2 is arranged outside the sample injector body 1, the nylon cloth 2 is fixed on the sample injector body 1 through the lock catch 3, so that the nylon cloth 2 is conveniently installed and disassembled above the sample injector body 1, the support rod 5 is arranged on the nylon cloth 2, the support rod 5, the supporting plate 6 with the vacuum chuck 7 is fixed to the chromatograph so that the injector body 1 is fixed.

Injector body 1's upper end and lower extreme are provided with stabilizing mean, stabilizing mean includes that fixed cover establishes the rotation ring 8 on injector body 1 outer wall, be provided with positioning mechanism between rotation ring 8 and the injector body 1, fixed welding has elastic telescopic rod 9 on the lateral wall of rotation ring 8, elastic telescopic rod 9's normal length is less than the length of bracing piece 5, elastic telescopic rod 9 keeps away from the one end fixed mounting who rotates ring 8 has sucking disc 10, adsorb sucking disc 10 on the chromatograph, injector body 1 is under elastic telescopic rod 9's effect this moment, towards the chromatograph extrusion, thereby the stability of injector body 1 has been improved.

Example 2

Referring to fig. 1, as another preferred embodiment of the present invention, the difference from embodiment 1 is that a square frame fastener 11 is sleeved on a nylon cloth 2, the square frame fastener 11 is fixedly welded to a support rod 5, and the support rod 5 is connected to the nylon cloth 2 in various ways, and a specific embodiment is provided herein.

Example 3

Referring to fig. 1 and 3, as another preferred embodiment of the present invention, the difference with embodiment 1 lies in, positioning mechanism includes the right angle folding rod 12 of fixed welding on rotating ring 8, the top threaded connection of right angle folding rod 12 has threaded rod 13, the fixed welding in top of threaded rod 13 has rim plate 14, the bottom fixed mounting of threaded rod 13 has carousel 15, the bottom fixed mounting of carousel 15 has stripper plate 16, the fixed adhesion in bottom surface of stripper plate 16 has slipmat 17, rotatory rim plate 15, make threaded rod 13 move down, extrude injector body 1, thereby make the rigidity of rotating ring 8, and slipmat 17 can be effectual the frictional force between improvement stripper plate 16 and the injector body 1.

Example 4

Referring to fig. 4, as another preferred embodiment of the present invention, the difference from embodiment 1 lies in that the elastic telescopic rod 9 includes a sliding sleeve 19 and a sliding rod 20, the sliding rod 20 is slidably disposed in the sliding sleeve 19, a tension spring 21 is disposed inside the sliding sleeve 19, two ends of the tension spring 21 are respectively connected to the sliding rod 20 and the sliding sleeve 19, under the action of the tension spring 21, the sliding rod 20 moves toward the sliding sleeve 19, and because the sliding rod 20 is fixed on the chromatograph, the sliding sleeve 19 drives the sample injector body 1 to extrude toward the chromatograph, so as to improve the stability of the sample injector body 1 when being fixed.

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. A sample introduction device for a gas chromatograph comprises a sample introduction device body (1) and is characterized in that nylon cloth (2) is arranged in the middle of the peripheral wall of the sample introduction device body (1), a lock catch (3) is arranged at one end of the nylon cloth (2), a plurality of holes (4) which are uniformly distributed and matched with the lock catch (3) for use are formed in the nylon cloth (2), a support rod (5) is fixedly arranged on the nylon cloth (2), a support plate (6) is fixedly welded at one end, far away from the nylon cloth (2), of the support rod (5), vacuum suckers (7) are fixedly installed at four corners of the support plate (6), stabilizing mechanisms are arranged at the upper end and the lower end of the sample introduction device body (1) and comprise a rotating ring (8) fixedly sleeved on the outer wall of the sample introduction device body (1), and a positioning mechanism is arranged between the rotating ring (8) and the sample introduction device body (1), the utility model discloses a support rod, including rotation ring (8), fixed welding has elastic telescopic rod (9) on the lateral wall of rotation ring (8), the normal length of elastic telescopic rod (9) is less than the length of bracing piece (5), the one end fixed mounting that rotation ring (8) were kept away from in elastic telescopic rod (9) has sucking disc (10).

2. The sample introduction device for the gas chromatograph according to claim 1, wherein a square clamping piece (11) is sleeved on the nylon cloth (2), and the square clamping piece (11) is fixedly welded with the support rod (5).

3. The sampling device of claim 1, wherein the positioning mechanism comprises a right-angle folding rod (12) fixedly welded on a rotating ring (8), a threaded rod (13) is connected to the top end of the right-angle folding rod (12) in a threaded manner, a wheel disc (14) is fixedly welded to the top end of the threaded rod (13), a rotary disc (15) is fixedly mounted at the bottom end of the threaded rod (13), an extrusion plate (16) is fixedly mounted at the bottom end of the rotary disc (15), and an anti-skid pad (17) is fixedly adhered to the bottom surface of the extrusion plate (16).

4. The sample injection device for gas chromatograph according to claim 1, wherein a protective rubber pad (18) is clamped between the sample injector body (1) and the nylon cloth (2).

5. The sample introduction device for the gas chromatograph according to claim 1, wherein the elastic telescopic rod (9) comprises a sliding sleeve (19) and a sliding rod (20), the sliding rod (20) is slidably disposed in the sliding sleeve (19), a tension spring (21) is disposed inside the sliding sleeve (19), and two ends of the tension spring (21) are respectively connected to the sliding rod (20) and the sliding sleeve (19).