CN212159705U

CN212159705U - Chromatograph quantitative injector

Info

Publication number: CN212159705U
Application number: CN202020443984.1U
Authority: CN
Inventors: 尧建兰
Original assignee: Individual
Current assignee: Harbin Xuli Technology Co ltd
Priority date: 2020-03-31
Filing date: 2020-03-31
Publication date: 2020-12-15
Anticipated expiration: 2030-03-31

Abstract

The utility model belongs to the chromatograph field, especially, chromatograph quantitative injector can not accurate control injection measurement to current syringe, leads to causing the analytical result to go wrong, and the relatively poor problem of syringe stability, presents the following scheme, and it includes the syringe, and slidable mounting has the piston in the syringe, and one side fixedly connected with of piston removes the post, the equal fixed mounting in both sides of syringe has the guard plate, and two guard plates are close to the same curb plate of one side fixedly connected with each other, and the rotation hole has been seted up to one side of curb plate, rotates downthehole rotation and installs the lead screw, the one end fixedly connected with of lead screw rotates the seat, rotates the seat and rotates and install one side at the curb plate, and the thread groove has been seted up to the one end. The utility model discloses rational in infrastructure, convenient operation, this syringe can accurate control injection measurement, can not cause the analysis result deviation to appear, and syringe stability in use is better.

Description

Chromatograph quantitative injector

Technical Field

The utility model relates to a chromatograph technical field especially relates to a chromatograph quantitative injector.

Background

The insulating oil gas chromatography requires that the injector has good sealing performance, and simultaneously requires accurate sample injection amount, three-fast and three-prevention are required during experiment operation, the injector used in the gas chromatography generally adopts a medical glass injector, and during the experiment process, the injector is injected into the chromatographic analyzer by pressing, the sample injection amount can fluctuate due to the influence of pressure, the sample injection speed can be limited, so that the analysis result is deviated, if the control is not good, the inner core of the injector glass can be lifted by the pressure, and the potential safety hazard exists;

however, the existing injector cannot accurately control the injection metering, so that the analysis result is deviated, and the stability of the injector is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the injector in the prior art can not accurately control the injection metering, resulting in the deviation of the analysis result, and the relatively poor stability of the injector, and providing a chromatograph quantitative injector.

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

the utility model provides a chromatograph quantitative injector, includes the syringe, and slidable mounting has the piston in the syringe, and one side fixedly connected with of piston removes the post, the equal fixed mounting in both sides of syringe has the guard plate, and the same curb plate of one side fixedly connected with that two guard plates are close to each other has seted up the rotation hole in one side of curb plate, rotates downthehole rotation and installs the lead screw, the one end fixedly connected with of lead screw rotates the seat, rotates the seat and rotates and install in one side of curb plate, and the thread groove has been seted up to the one end of removal post, and the other end screw thread of lead screw is installed in the thread groove, the slip cap is equipped with the limiting plate on the removal post, and two fixed slots have been seted up to one side of syringe.

Preferably, a plurality of draw-in grooves have all been seted up to one side that two gag lever posts kept away from each other, have all seted up the compression spring groove on the inner wall of one side of two fixed slots, and equal slidable mounting has the fixture block in two compression spring inslots, fixture block and the draw-in groove looks adaptation that corresponds, the fixture block roll-off corresponds the draw-in groove, and the fixture block extrudees the pressure spring that corresponds, and elastic deformation takes place for the pressure spring, can cancel the fixed restriction of gag lever post.

Preferably, the slide holes are formed in the inner wall of one side of each of the two compression spring grooves, the control rods are slidably mounted in the slide holes, one ends, close to each other, of the two control rods are fixedly connected to the corresponding two clamping blocks, one ends, far away from each other, of the two control rods are fixedly connected with pull rings, the pull rings drive the corresponding control rods to move, and the control rods drive the corresponding clamping blocks to move.

Preferably, all the cover is equipped with the pressure spring on two control levers, and the one end welding of pressure spring is in one side of the fixture block that corresponds, and the other end welding of pressure spring is on one side inner wall in the pressure spring groove that corresponds, because the elastic action of pressure spring drives in another draw-in groove of fixture block slip, can fix the position of limiting plate.

Preferably, the mounting groove has all been seted up to one side that two guard plates are close to each other, removes the equal fixedly connected with connecting rod in both sides of post, and the one end slidable mounting of connecting rod is in the mounting groove that corresponds, and the movable column drives the connecting rod and slides in the mounting groove that corresponds when removing, can stabilize the position when connecting rod removes.

Preferably, a through hole is formed in one side of the connecting rod, a fixing rod is slidably mounted in the through hole, two ends of the fixing rod are welded to inner walls of two sides of the mounting groove respectively, and when the connecting rod slides in the mounting groove, the fixing rod passively slides in the through hole, so that the position of the connecting rod during movement can be stabilized.

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

(1) according to the scheme, the two pull rings are pulled, the pull rings drive the corresponding control rods to move, the control rods drive the corresponding clamping blocks to move, the fixed limit of the limiting rod can be cancelled, the limiting plate is moved, the limiting plate drives the limiting rod to passively slide in the fixed groove, and the position of the limiting plate can be adjusted;

(2) according to the scheme, the spacing between the limiting plate and the connecting rod can be adjusted by moving the limiting plate, so that the injection metering can be adjusted, the pull ring is loosened, the position of the limiting plate can be fixed, the rotating seat is rotated, the rotating seat drives the screw rod to rotate, the injection tube performs injection, the moving column drives the connecting rod to slide in the mounting groove, and the injection can be stopped;

the utility model discloses rational in infrastructure, convenient operation, this syringe can accurate control injection measurement, can not cause the analysis result deviation to appear, and syringe stability in use is better.

Drawings

Fig. 1 is a schematic view of a front view structure of a quantitative injector of a chromatograph according to the present invention;

fig. 2 is a schematic structural view of a portion a of a chromatograph quantitative injector according to the present invention;

fig. 3 is a schematic structural diagram of a part B of a chromatograph quantitative injector according to the present invention.

In the figure: 1. an injection tube; 2. a piston; 3. moving the column; 4. a protection plate; 5. a side plate; 6. a screw rod; 7. a thread groove; 8. fixing grooves; 9. a limiting rod; 10. a limiting plate; 11. a card slot; 12. a clamping block; 13. a control lever; 14. a pressure spring; 15. mounting grooves; 16. a connecting rod; 17. and (6) rotating the seat.

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.

Referring to fig. 1-3, a chromatograph quantitative injector, including injection syringe 1, slidable mounting has piston 2 in injection syringe 1, one side fixedly connected with of piston 2 removes post 3, the equal fixed mounting in both sides of injection syringe 1 has guard plate 4, the same curb plate 5 of one side fixedly connected with that two guard plates 4 are close to each other, the rotation hole has been seted up to one side of curb plate 5, rotate downthehole rotation and install lead screw 6, seat 17 is rotated to the one end fixedly connected with of lead screw 6, rotate seat 17 and rotate and install in one side of curb plate 5, thread groove 7 has been seted up to the one end of removing post 3, the other end screw thread of lead screw 6 is installed in thread groove 7, sliding sleeve is equipped with limiting plate 10 on removing post 3, two fixed slots 8 have been seted up to one side of injection syringe 1, equal slidable mounting has gag lever 9 in two fixed slots 8, the equal fixed.

In this embodiment, a plurality of draw-in grooves 11 have all been seted up to one side that two gag lever posts 9 kept away from each other, have all seted up the compression spring groove on one side inner wall of two fixed slots 8, and equal slidable mounting has fixture block 12 in two compression spring inslots, fixture block 12 and the draw-in groove 11 looks adaptation that corresponds, the draw-in groove 11 that fixture block 12 roll-off corresponds, the compression spring 14 that fixture block 12 extrudees the correspondence, elastic deformation takes place for compression spring 14, can cancel gag lever post 9's fixed restriction.

In this embodiment, all seted up the slide opening on one side inner wall in two pressure spring grooves, equal slidable mounting has control lever 13 in two slide openings, and the equal fixed connection of one end that two control lever 13 are close to each other is on two fixture blocks 12 that correspond, and the equal fixedly connected with pull ring of one end that two control lever 13 kept away from each other, pull ring drive corresponding control lever 13 and remove, and control lever 13 drives corresponding fixture block 12 and removes.

In this embodiment, all the cover is equipped with pressure spring 14 on two control levers 13, and the one end welding of pressure spring 14 is in one side of the fixture block 12 that corresponds, and the other end welding of pressure spring 14 is on the one side inner wall in the pressure spring groove that corresponds, because the elastic action of pressure spring 14 drives fixture block 12 and slides into in another draw-in groove 11, can fix the position of limiting plate 10.

In this embodiment, mounting groove 15 has all been seted up to one side that two guard plates 4 are close to each other, removes the equal fixedly connected with connecting rod 16 in both sides of post 3, and the one end slidable mounting of connecting rod 16 drives connecting rod 16 and slides in the mounting groove 15 that corresponds when removing post 3 and removing, can stabilize the position when connecting rod 16 removes in the mounting groove 15 that corresponds.

In this embodiment, the through-hole has been seted up to one side of connecting rod 16, and slidable mounting has the dead lever in the through-hole, and the both ends of dead lever weld respectively on the both sides inner wall of mounting groove 15, and when connecting rod 16 slided in mounting groove 15, the dead lever slided in the through-hole passively, can stabilize the position when connecting rod 16 removed.

In the embodiment, the worker checks each component to ensure that the component can be used after no error, the two pull rings are pulled, the pull rings drive the corresponding control rod 13 to move, the control rod 13 drives the corresponding clamping block 12 to move, the clamping block 12 slides out of the corresponding clamping groove 11, the clamping block 12 extrudes the corresponding pressure spring 14, the pressure spring 14 generates elastic deformation, the fixed limit of the limiting rod 9 can be cancelled, the limiting plate 10 is moved, the limiting plate 10 slides on the moving column 3, the limiting plate 10 drives the limiting rod 9 to passively slide in the fixed groove 8, the position of the limiting plate 10 can be adjusted, the distance between the limiting plate 10 and the connecting rod 16 can be adjusted by moving the limiting plate 10, the injection metering can be adjusted, the pull rings are loosened, the clamping block 12 is driven to slide into another clamping groove 11 due to the elastic action of the pressure spring 14, the position of the limiting plate 10 can be fixed, the rotating seat, the lead screw 6 drives and removes post 3 and removes, removes post 3 and drives piston 2 and impel forward, and injection tube 1 injects, removes post 3 and drives connecting rod 16 and slide in mounting groove 15, and connecting rod 16 removes and stops moving after contacting with limiting plate 10, can stop the injection, the utility model discloses rational in infrastructure, convenient operation, this syringe can accurate control injection measurement, can not cause the analysis result deviation to appear, and syringe stability in use is better.

The utility model discloses the standard part that uses all can purchase from the market, and dysmorphism piece all can be customized according to the description with the record of drawing of description, and the concrete connection mode of each part all adopts conventional means such as ripe bolt, rivet, welding among the prior art, and machinery, part and equipment all adopt prior art, and conventional model, including circuit connection adopts conventional connection mode among the prior art, does not detailed here again.

Claims

1. The utility model provides a chromatograph quantitative injector, includes injection syringe (1), and slidable mounting has piston (2) in injection syringe (1), and one side fixedly connected with of piston (2) removes post (3), its characterized in that, the equal fixed mounting in both sides of injection syringe (1) has guard plate (4), and one side fixedly connected with same curb plate (5) that two guard plates (4) are close to each other, and the rotation hole has been seted up to one side of curb plate (5), and rotation downthehole rotation installs lead screw (6), the one end fixedly connected with of lead screw (6) rotates seat (17), rotates seat (17) and rotates and install in one side of curb plate (5), and thread groove (7) have been seted up to the one end of removing post (3), and the other end screw thread of lead screw (6) is installed in thread groove (7), sliding sleeve has limiting plate (10) on removing post (3), and two fixed slots (8) have been seted, limiting rods (9) are installed in the two fixing grooves (8) in a sliding mode, and one ends of the two limiting rods (9) are fixedly connected to one side of the limiting plate (10) in a fixed mode.

2. The chromatograph quantitative injector according to claim 1, wherein a plurality of clamping grooves (11) are formed in the sides of the two limiting rods (9) away from each other, compression spring grooves are formed in the inner walls of the two fixing grooves (8), clamping blocks (12) are slidably mounted in the two compression spring grooves, and the clamping blocks (12) are matched with the corresponding clamping grooves (11).

3. The chromatograph quantitative injector of claim 2, wherein sliding holes are formed in one inner wall of each of the two compression spring grooves, control rods (13) are slidably mounted in the sliding holes, ends of the two control rods (13) close to each other are fixedly connected to the corresponding two clamping blocks (12), and ends of the two control rods (13) far from each other are fixedly connected to pull rings.

4. The chromatograph quantitative injector according to claim 3, wherein the two control rods (13) are sleeved with compression springs (14), one ends of the compression springs (14) are welded to one side of the corresponding clamping blocks (12), and the other ends of the compression springs (14) are welded to the inner wall of one side of the corresponding compression spring grooves.

5. The chromatograph quantitative injector according to claim 1, wherein the two protection plates (4) are provided with mounting grooves (15) on the sides close to each other, the two sides of the movable column (3) are fixedly connected with connecting rods (16), and one end of each connecting rod (16) is slidably mounted in the corresponding mounting groove (15).

6. The chromatograph quantitative injector of claim 5, wherein the connecting rod (16) has a through hole at one side, and a fixing rod is slidably installed in the through hole, and both ends of the fixing rod are respectively welded to the inner walls of the two sides of the installation groove (15).