CN217561424U

CN217561424U - Gas chromatography gas sample introduction system

Info

Publication number: CN217561424U
Application number: CN202221167334.4U
Authority: CN
Inventors: 熊颖
Original assignee: Suzhou Meiczech Electronic Technology Co ltd
Current assignee: Suzhou Meiczech Electronic Technology Co ltd
Priority date: 2022-05-16
Filing date: 2022-05-16
Publication date: 2022-10-11
Anticipated expiration: 2032-05-16

Abstract

The utility model relates to a gaseous sampling system of gas chromatography belongs to gas chromatography technical field. It mainly to some present through electric putter injection advance kind of pipe in, this in-process need utilize electric lift rod to drive the syringe and descend so that the injection head of syringe stretches into and advances kind of pipe in, and all need set up an electric lift rod on every syringe, greatly increased the use of drive structures such as electric lift rod and electric lift rod, increased the problem of cost, propose following technical scheme: the device comprises a fixed table and a rotating disc which is rotatably connected to the upper portion of the fixed table, wherein the rotating disc is annularly provided with a plurality of cylindrical mounting holes, and each cylindrical mounting hole is internally and movably embedded with an injector containing a detection sample. The utility model discloses a single electric putter can be respectively with the sample injection in the syringe advance a liquid section of thick bamboo, and the injection process need not to utilize electric lift device can make the injection nozzle insert into a liquid section of thick bamboo, greatly reduced drive arrangement's use cost.

Description

Gas chromatography gas sample introduction system

Technical Field

The utility model relates to a gas chromatography technical field especially relates to a gas chromatography gas sampling system.

Background

Gas chromatography is a new separation and analysis technology, and is widely applied to industrial, agricultural, national defense, construction and scientific research. Since separate analysis is involved, a sampling and sample introduction system is required. If the publication number is CN 207908446U's Chinese patent, a gas chromatograph gas sampling system is disclosed, including rotatory sampling device and external detection device, detection device includes chromatographic column and detector etc., rotatory sampling device includes rotary disk and a plurality of syringes of annular installation on the rotary disk, the sample of splendid attire passes through electric putter and injects into the sample tube in the syringe, this in-process need utilize electric lifter to drive the syringe and descend so that the injection head of syringe stretches into in the sample tube, and all need set up an electric putter on every syringe, greatly increased the use of drive structure such as electric putter and electric lifter, the cost is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims at some of the current that mention in the background art go into the appearance pipe through electric putter injection, this in-process need utilize electric lifter to drive the syringe and descend so that the injection head of syringe stretches into the appearance pipe, and all need set up an electric putter on every syringe, greatly increased the use of drive structures such as electric putter and electric lifter, increased the problem of cost, provide a gas chromatography gas sampling system.

The technical scheme of the utility model: the utility model provides a gaseous sampling system of gas chromatography, includes the fixed station and rotates the rotary disk of connecting on fixed station upper portion, the rotary disk annular branch is equipped with a plurality of cylindricality mounting holes, every equal activity scarf joint has the syringe that a splendid attire has the testing sample, be provided with the piston to push away the post in the syringe, the last fixed surface of rotary disk is connected with first motor, the output shaft of first motor and the one end fixed connection of connecting plate, the other end fixedly connected with bottom of connecting plate can stretch into the electric putter of the cylindricality mounting hole in order to promote the piston to push away the post downwards.

Preferably, one side of the inside of the top end of the fixed platform is embedded with a liquid inlet cylinder which can be vertically aligned with a single syringe, and the liquid inlet cylinder is externally connected with a detection device through a sample inlet pipe.

Preferably, a stopper capable of preventing the syringe from moving downwards continuously is arranged on the upper surface of the fixed table and positioned outside the liquid inlet cylinder.

Preferably, the bottom end of the injector is provided with an injection nozzle which can be communicated with the inside of the injector, the top end of the injector is provided with an ear block, and the inner wall of the rotating disk is provided with a guide groove for the ear block to move up and down.

Preferably, a guide shaft capable of penetrating through the ear block at the corresponding position is fixedly connected between the upper inner wall and the lower inner wall of the guide groove.

Preferably, the guide shaft is movably sleeved with a return spring and is positioned between the lower inner wall of the guide groove and the lug.

Preferably, the lower surface of connecting plate is connected with the direction slide bar, the upper surface of fixed station is seted up can with the bottom sliding connection's of direction slide bar direction spout.

Preferably, a second motor is arranged inside the fixed table, and an output shaft of the second motor is fixedly connected with the bottom of the rotating disc.

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

this application can be respectively with the sample injection of syringe in advance a liquid section of thick bamboo through single electric putter, and the injection process need not to utilize electric lifting device can make the injection nozzle insert into a liquid section of thick bamboo, greatly reduced drive arrangement's use cost.

Drawings

FIG. 1 is a schematic diagram of a gas chromatography gas sample injection system;

FIG. 2 is a sectional view of the rotary disk and the stationary table of FIG. 1;

fig. 3 is an enlarged schematic view of a point a in fig. 2.

Reference numerals: 1. a fixed table; 2. rotating the disc; 3. a first motor; 4. a connecting plate; 5. an electric push rod; 6. a cylindrical mounting hole; 7. a guide slide bar; 8. a guide chute; 9. a second motor; 10. an injector; 101. a piston push post; 102. an injection nozzle; 103. an ear piece; 104. a guide groove; 105. a guide shaft; 106. a return spring; 11. a liquid inlet cylinder; 12. a stopper.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and specific embodiments.

Example one

As shown in fig. 1-3, the utility model provides a gas chromatography gas sampling system, including fixed station 1 and the rotary disk 2 of rotating the connection on fixed station 1 upper portion, the inside of fixed station 1 is provided with second motor 9, the output shaft of second motor 9 and the bottom fixed connection of rotary disk 2. The rotary disk 2 is annularly provided with a plurality of cylindrical mounting holes 6, a syringe 10 containing a detection sample is movably embedded in each cylindrical mounting hole 6, one side of the inside of the top end of the fixed platform 1 is embedded with a liquid inlet cylinder 11 which can be vertically aligned with the single syringe 10, the liquid inlet cylinder 11 is externally connected with a detection device through a sample inlet pipe, and the detection device comprises a chromatographic column, a detector and the like. A piston plunger 101 is arranged in the syringe 10, and the piston plunger 101 comprises a piston ring at the bottom and a piston plunger fixedly connected to the top of the piston ring, wherein the piston ring can be in friction fit with the inner wall of the syringe 10. The upper surface of the rotating disc 2 is fixedly connected with a first motor 3, an output shaft of the first motor 3 is fixedly connected with the lower surface of one end of a connecting plate 4, the lower surface of the other end of the connecting plate 4 is fixedly connected with an electric push rod 5, the bottom end of the electric push rod can extend into a cylindrical mounting hole 6 to push a piston push column 101 downwards, and a stopper 12 capable of preventing the injector 10 from moving downwards continuously is fixedly connected to the upper surface of the fixed table 1 and positioned on the outer side of the liquid inlet cylinder 11; an injection nozzle 102 capable of being communicated with the inside of the injector 10 is integrally connected to the bottom end of the injector 10, an ear block 103 is integrally connected to the top end of the injector 10, a guide groove 104 capable of allowing the ear block 103 to move up and down is formed in the inner wall of the rotating disc 2, a guide shaft 105 capable of penetrating through the ear block 103 at the corresponding position is fixedly connected between the upper inner wall and the lower inner wall of the guide groove 104, and a reset spring 106 is movably sleeved on the guide shaft 105 between the lower inner wall of the guide groove 104 and the ear block 103.

The working principle of the embodiment is as follows: when sampling, the telescopic rod of the electric push rod 5 extends downwards to push the piston push column 101 downwards, the injector 10 is wholly driven to move downwards for a certain distance by the friction force between the piston ring at the bottom end of the piston push column 101 and the inner wall of the injector 10 until the injector 10 is contacted with the stopper 12 and stops moving downwards, the injection nozzle 102 just extends into the liquid inlet cylinder 11 at the moment, the piston push column 101 continues to move downwards under the thrust action of the electric push rod 5, so that a sample in the injector 10 is injected into the liquid inlet cylinder 11, and the liquid inlet cylinder 11 is poured into a detection device through a sample inlet pipe for detection; after the injection is finished, the telescopic rod of the electric push rod 5 contracts upwards, and the return spring 106 pushes the syringe 10 to move upwards through the upward elastic thrust, so that the injection nozzle 102 is drawn out of the liquid inlet cylinder 11.

Example two

As shown in fig. 1-3, the utility model provides a gas chromatography gas sampling system, compare in embodiment one, this embodiment still includes: the lower surface of the connecting plate 4 is fixedly connected with a guide slide bar 7, and the upper surface of the fixed table 1 is provided with a guide chute 8 which can be in sliding connection with the bottom end of the guide slide bar 7.

The working principle of the embodiment is as follows: after the injection of a single syringe 10 is finished, the output shaft of the first motor 3 drives the connecting plate 4 to rotate, and then drives the electric push rod 5 to rotate, in this embodiment, because 8 syringes 10 are annularly arranged, the first motor 3 is set to drive the electric push rod 5 to rotate by 45 °, so that the electric push rod 5 can be located right above the next syringe 10, and at the same time, the output shaft of the second motor 9 drives the rotating disk 2 to reversely rotate by 45 °, so that the syringe 10 is aligned with the liquid inlet barrel 11, and then the sample of the syringe 10 is injected into the liquid inlet barrel 11 as described in the first embodiment.

The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited thereto, and various changes can be made without departing from the gist of the present invention within the knowledge of those skilled in the art.

Claims

1. The utility model provides a gaseous sampling system of gas chromatography, includes fixed station (1) and rotates rotary disk (2) of connecting on fixed station (1) upper portion, its characterized in that: the rotary disk (2) is divided annularly and is equipped with a plurality of cylindricality mounting holes (6), every equal activity scarf joint has syringe (10) that a splendid attire detected the sample in cylindricality mounting hole (6), be provided with piston pushing column (101) in syringe (10), the last fixed surface of rotary disk (2) is connected with first motor (3), the output shaft of first motor (3) and the one end fixed connection of connecting plate (4), the other end fixedly connected with bottom of connecting plate (4) can stretch into in cylindricality mounting hole (6) with electric putter (5) of pushing column (101) are pushed away downwards in order to promote the piston.

2. The gas chromatography gas sample introduction system according to claim 1, wherein a liquid inlet cylinder (11) capable of being vertically aligned with a single syringe (10) is embedded in one side of the top end of the fixed platform (1), and the liquid inlet cylinder (11) is externally connected with a detection device through a sample introduction pipe.

3. A gas chromatography gas sample introduction system according to claim 1, wherein a stopper (12) capable of preventing the injector (10) from moving downwards continuously is arranged on the upper surface of the fixed table (1) and outside the liquid inlet cylinder (11).

4. The gas chromatography gas sampling system according to claim 1, wherein an injection nozzle (102) capable of communicating with the inside of the injector (10) is arranged at the bottom end of the injector (10), an ear block (103) is arranged at the top end of the injector (10), and a guide groove (104) capable of allowing the ear block (103) to move up and down is formed in the inner wall of the rotating disc (2).

5. The gas chromatography gas sample introduction system according to claim 4, wherein a guide shaft (105) capable of penetrating through the ear block (103) at the corresponding position is fixedly connected between the upper inner wall and the lower inner wall of the guide groove (104).

6. A gas chromatography gas sample introduction system according to claim 5, characterized in that the guide shaft (105) between the lower inner wall of the guide groove (104) and the lug (103) is movably sleeved with a return spring (106).

7. The gas chromatography gas sampling system according to claim 1, wherein a guide slide bar (7) is connected to a lower surface of the connecting plate (4), and a guide chute (8) capable of being slidably connected with a bottom end of the guide slide bar (7) is formed in an upper surface of the fixing table (1).

8. The gas chromatography gas sample introduction system according to claim 1, wherein a second motor (9) is arranged inside the fixed table (1), and an output shaft of the second motor (9) is fixedly connected with the bottom of the rotating disc (2).