CN210604526U - Gas chromatograph convenient to advance appearance - Google Patents

Abstract

The utility model discloses a gas chromatograph convenient to advance appearance relates to gas chromatograph technical field, the power distribution box comprises a box body, the inside of box is provided with the recess, one side of recess bottom is provided with first fixed block, one side that first fixed block was kept away from to the recess bottom is provided with the second fixed block, the intermediate position department that first fixed block one side was kept away from to the second fixed block is provided with the threaded rod. The utility model discloses a to have the needle tubing of syringe needle to put into the recess, the lug carries on spacingly to the needle tubing, rotate the threaded rod, through threaded rod and stopper threaded connection, promote the removal of second fixed block looks recess direction, can prevent through the gag lever post that the second fixed block from following the threaded rod and rotating together, fix the syringe needle through the inside draw-in groove of first fixed block and second fixed block, make the pinhole separation of syringe needle and needle tubing bottom, avoid causing the discount of syringe needle, crooked or damage, make the sample effect of needle tubing better.

Description

Gas chromatograph convenient to advance appearance

Technical Field

The utility model relates to a gas chromatograph technical field specifically is a gas chromatograph convenient to advance kind.

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 soil and have a boiling point of not more than 500 ℃, such as volatile organic matters, organic chlorine, organic phosphorus, polycyclic aromatic hydrocarbons, phthalate esters and the like.

Common chromatograph is at the in-process of advancing the appearance, because the introduction port is fixed unstable, causes the discount, the bending or the damage of syringe needle easily, influences and advances the appearance to can not control the volume that solution got into gas chromatograph during advancing the appearance, cause the waste of solution easily, increase the cost, the result of use is relatively poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: in order to solve the problems that a sample inlet is fixed and unstable, a needle head is easily folded, bent or damaged, the quantity of a solution entering a gas chromatograph cannot be controlled when sample introduction and sample introduction are influenced, the waste of the solution is easily caused, and the cost is increased, the gas chromatograph convenient for sample introduction is provided.

In order to achieve the above object, the utility model provides a following technical scheme: a gas chromatograph convenient for sample introduction comprises a box body, a groove is arranged in the box body, a first fixed block is arranged on one side of the bottom of the groove, a second fixed block is arranged on one side of the bottom of the groove far away from the first fixed block, a threaded rod is arranged at the middle position of one side of the second fixed block, which is far away from the first fixed block, two ends of one side of the second fixed block, which is far away from the first fixed block, are both provided with limit rods, a needle tube is arranged inside the groove, a leather plug is arranged inside the needle tube, a limit hole is arranged at the top end inside the needle tube, a push rod penetrating to the limiting hole is arranged at the top of the leather plug, a convex block is arranged at the outer side of the groove, the bottom of needle tubing is provided with the pinhole, the outside of pinhole is provided with the syringe needle, the bottom of recess is provided with the stopper, the below that the needle tubing outside is located the lug is provided with the scale mark.

Preferably, the inside of first fixed block and second fixed block all is provided with the draw-in groove, the inside of draw-in groove all is provided with the rubber pad, the syringe needle passes through the draw-in groove and can dismantle with first fixed block and second fixed block and be connected.

Preferably, the inside of stopper is provided with threaded rod assorted screw hole, the threaded rod passes through screw hole and stopper threaded connection, the one end that the threaded rod is close to the second fixed block is provided with the bearing.

Preferably, the inside both ends of stopper all are provided with the slide opening, the gag lever post passes through slide opening and stopper sliding connection, gag lever post and second fixed block fixed connection.

Preferably, the outside of push rod sets up the external screw thread, the inside in spacing hole be provided with push rod assorted internal thread, the push rod passes through internal thread and external screw thread and spacing hole threaded connection.

Preferably, the top of leather plug is provided with the bearing, the push rod passes through the bearing and is connected with the leather plug rotation, the syringe needle passes through the pinhole and can dismantle with the needle tubing and be connected.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a put into the recess with the needle tubing of syringe needle, the lug is spacing to the needle tubing, rotate the threaded rod, through threaded rod and stopper threaded connection, promote the second fixed block to move towards the recess, can prevent through the gag lever post that the second fixed block from following the threaded rod and rotating together, fix the syringe needle through the draw-in groove inside first fixed block and the second fixed block, make the syringe needle separate with the pinhole of needle tubing bottom, avoid causing the discount of syringe needle, crooked or damage, make the sample effect of needle tubing better, put into solution with the pinhole again, rotate the push rod, through push rod and spacing hole threaded connection, make the push rod reciprocate in the inside of needle tubing, thereby drive the leather plug to reciprocate in the needle tubing, inhale solution into the needle tubing through the effect of pressure, through push rod and spacing hole threaded connection, make the push rod reciprocate more stable in the inside of needle tubing, therefore, the amount of the solution entering the gas chromatograph can be controlled more accurately, the waste of the solution is avoided, the cost is reduced, and the using effect is better.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the needle tube of the present invention;

fig. 3 is an enlarged view of the present invention a.

In the figure: 1. a box body; 2. a groove; 3. a first fixed block; 4. a second fixed block; 5. a threaded rod; 6. a limiting rod; 7. a needle head; 8. a needle tube; 9. a plug of leather; 10. a limiting hole; 11. a bump; 12. a push rod; 13. a pinhole; 14. a limiting block; 15. scale lines are marked.

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 work belong to the protection scope of the present invention.

Referring to fig. 1-3, a gas chromatograph convenient for sample injection comprises a case 1, a groove 2 is arranged in the case 1, a first fixing block 3 is arranged on one side of the bottom of the groove 2, a second fixing block 4 is arranged on one side of the bottom of the groove 2 away from the first fixing block 3, a threaded rod 5 is arranged at the middle position of one side of the second fixing block 4 away from the first fixing block 3 to play a role of limiting, a needle 7 is firmly fixed, a limiting rod 6 is arranged at both ends of one side of the second fixing block 4 away from the first fixing block 3, a needle tube 8 is arranged in the groove 2, a leather plug 9 is arranged in the needle tube 8 to facilitate sampling of the needle tube 8, a limiting hole 10 is arranged at the top end of the inner part of the needle tube 8, a push rod 12 penetrating through the limiting hole 10 is arranged at the top of the leather plug 9, a bump 11 is arranged, the outer side of the needle hole 13 is provided with a needle head 7, the bottom of the groove 2 is provided with a limiting block 14, and the outer side of the needle tube 8 is provided with scale marks 15 below the projection 11.

Please refer to fig. 1 and 3, the first fixing block 3 and the second fixing block 4 are provided with a slot inside, and the slot is provided with a rubber pad inside to protect the needle 7, so as to prevent the needle 7 from being damaged, and the needle 7 is detachably connected with the first fixing block 3 and the second fixing block 4 through the slot to fix the needle 7.

Please refer to fig. 1 and fig. 3, a threaded hole matched with the threaded rod 5 is arranged inside the limiting block 14, the threaded rod 5 is in threaded connection with the limiting block 14 through the threaded hole to play a limiting role, and a bearing is arranged at one end of the threaded rod 5 close to the second fixing block 4 to fix the needle head 7 conveniently.

Please refer to fig. 3, the two ends inside the limiting block 14 are both provided with a sliding hole, the limiting rod 6 is connected with the limiting block 14 in a sliding manner through the sliding hole to reduce the friction force, so as to facilitate the movement of the limiting rod 6, and the limiting rod 6 is fixedly connected with the second fixing block 4, so that the limiting rod 6 and the second fixing block 4 are fixed firmly.

Please refer to fig. 1 and fig. 2, an external thread is disposed on the outer side of the push rod 12, an internal thread matched with the push rod 12 is disposed inside the limit hole 10, the push rod 12 is in threaded connection with the limit hole 10 through the internal thread and the external thread, and a limit thread is formed, so that the movement of the leather plug 9 is more stable.

Please refer to fig. 2, the top of the leather plug 9 is provided with a bearing, the push rod 12 is rotatably connected with the leather plug 9 through the bearing, so as to reduce friction force, and the push rod 12 is more labor-saving to rotate, and the needle 7 is detachably connected with the needle tube 8 through the needle hole 13, so as to facilitate the disassembly and assembly of the needle 7.

The working principle is as follows: before use, the needle tube 8 with the needle head 7 is placed into the groove 2, the convex block 11 limits the needle tube 8, the threaded rod 5 is rotated, the threaded rod 5 is in threaded connection with the limiting block 14 through the threaded rod 5, the second fixing block 4 is pushed to move towards the groove 2, the limiting rod 6 can prevent the second fixing block 4 from rotating along with the threaded rod 5, the needle head 7 is fixed through the clamping grooves in the first fixing block 3 and the second fixing block 4, the needle tube 8 is drawn out of the groove 2, the needle head 7 is separated from the needle hole 13 at the bottom of the needle tube 8, the needle head is prevented from being folded, bent or damaged, the sampling effect of the needle tube 8 is better, when the needle tube is used, the needle hole 13 is placed into a solution, the push rod 12 is rotated, the push rod 12 is in threaded connection with the limiting hole 10 through the push rod 12, the push rod 12 moves up and down in the needle, solution is sucked into the needle tube 8 under the action of pressure intensity, the push rod 12 is connected with the limiting hole 10 in a threaded mode through the push rod 12, the push rod 12 is enabled to move up and down more stably in the needle tube 8, accordingly, the solution can be controlled more accurately to enter a gas chromatograph, the waste of the solution is avoided, the cost is reduced, and the using effect is good.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (6)

1. The utility model provides a gas chromatograph convenient to advance appearance, includes box (1), its characterized in that: the box body (1) is internally provided with a groove (2), one side of the bottom of the groove (2) is provided with a first fixed block (3), one side of the bottom of the groove (2) far away from the first fixed block (3) is provided with a second fixed block (4), the middle position of the second fixed block (4) far away from one side of the first fixed block (3) is provided with a threaded rod (5), two ends of the second fixed block (4) far away from one side of the first fixed block (3) are both provided with limit rods (6), the inside of the groove (2) is provided with a needle tube (8), the inside of the needle tube (8) is provided with a leather plug (9), the top end of the inside of the needle tube (8) is provided with a limit hole (10), the top of the leather plug (9) is provided with a push rod (12) penetrating through the limit hole (10), the outside of the groove (, the bottom of needle tubing (8) is provided with pinhole (13), the outside of pinhole (13) is provided with syringe needle (7), the bottom of recess (2) is provided with stopper (14), the below that needle tubing (8) outside is located lug (11) is provided with scale mark (15).

2. The gas chromatograph for facilitating sample injection of claim 1, wherein: the inside of first fixed block (3) and second fixed block (4) all is provided with the draw-in groove, the inside of draw-in groove all is provided with the rubber pad, syringe needle (7) can be dismantled with first fixed block (3) and second fixed block (4) through the draw-in groove and be connected.

3. The gas chromatograph for facilitating sample injection of claim 1, wherein: the inside of stopper (14) is provided with threaded rod (5) assorted screw hole, threaded rod (5) pass through screw hole and stopper (14) threaded connection, the one end that threaded rod (5) are close to second fixed block (4) is provided with the bearing.

4. The gas chromatograph for facilitating sample injection of claim 1, wherein: the inside both ends of stopper (14) all are provided with the slide opening, gag lever post (6) pass through slide opening and stopper (14) sliding connection, gag lever post (6) and second fixed block (4) fixed connection.

5. The gas chromatograph for facilitating sample injection of claim 1, wherein: the outer side of the push rod (12) is provided with an external thread, the inner part of the limiting hole (10) is provided with an internal thread matched with the push rod (12), and the push rod (12) is in threaded connection with the limiting hole (10) through the internal thread and the external thread.

6. The gas chromatograph for facilitating sample injection of claim 1, wherein: the top of leather plug (9) is provided with the bearing, push rod (12) are connected through bearing and leather plug (9) rotation, syringe needle (7) are connected through pinhole (13) and needle tubing (8) can be dismantled.

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