CN211061487U

CN211061487U - Automatic sample introduction device for gas chromatograph

Info

Publication number: CN211061487U
Application number: CN201921934036.1U
Authority: CN
Inventors: 李林; 秦立新; 赵书举
Original assignee: Shandong Qimei Instrument Co ltd
Current assignee: Shandong Qimei Instrument Co ltd
Priority date: 2019-11-11
Filing date: 2019-11-11
Publication date: 2020-07-21
Anticipated expiration: 2029-11-11

Abstract

The utility model discloses an automatic sample feeding device for a gas chromatograph, which comprises a main body frame, a fixing device, an extrusion device and a clamping device, wherein one end inside the main body frame is connected with a rotating rod through a rotating shaft in a rotating way, the bottom of the rotating rod is fixedly connected with a gear, the middle part of the rotating rod is fixedly provided with a supporting block, one side of the supporting block is fixedly provided with the clamping device, the clamping device is internally provided with an injector, one end at the bottom of the main body frame is fixedly provided with a motor bracket, the motor bracket is internally fixedly provided with a rotating motor, the output end of the rotating motor is fixedly provided with a gear, the gear on the rotating rod is mutually connected with the gear on the rotating motor, one end of the main body frame, which is far away from the rotating rod, is symmetrically and fixedly provided with a supporting rod, the automatic sampling device for the gas chromatograph is convenient to operate and replace, simple in structure and high in practicability.

Description

Automatic sample introduction device for gas chromatograph

Technical Field

The utility model relates to a gas chromatograph measures technical field, specifically is an autoinjection device for gas chromatograph.

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. The method can be generally used for analyzing heat-stable organic matters with the boiling point not more than 500 ℃, such as volatile organic matters, organic chlorine, organic phosphorus, polycyclic aromatic hydrocarbons, phthalate ester and the like in soil, and the prior sample injection of a liquid sample generally adopts a microinjector which needs manual injection; the length of the injector needle inserted into the sample inlet of the gas chromatograph is not easy to master in the manual injection process, and errors are avoided, so that the measured data have deviation and inaccuracy. Therefore, an automatic sample injection device for a gas chromatograph is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an autoinjection device for gas chromatograph to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an automatic sample introduction device for a gas chromatograph comprises a main body frame, a fixing device, a squeezing device and a clamping device, one end of the inner part of the main body frame is rotationally connected with a rotating rod through a rotating shaft, the bottom of the rotating rod is fixedly connected with a gear, a supporting block is fixedly arranged in the middle of the rotating rod, a clamping device is fixedly arranged on one side of the supporting block, a motor bracket is fixedly arranged at one end of the bottom of the main body frame, which is provided with the injector in the clamping device, a rotating motor is fixedly arranged in the motor bracket, a gear is fixedly arranged at the output end of the rotating motor, the gear on the rotating rod is mutually matched with the gear on the rotating motor, the supporting rods are symmetrically and fixedly arranged at one end of the main body frame far away from the rotating rod, the supporting rod is provided with an extrusion device, the bottom end of the back of the main body frame is fixedly provided with a fixing device, and a sample vessel is fixed in the fixing device.

Preferably, fixing device includes base, spacing landing leg and spacing spring, base fixed mounting is in the inside bottom of main part frame, four recesses have been seted up to the top symmetry of base, four spacing landing legs are installed to the symmetry in the recess of base, four spacing landing leg's one end is passed through spacing spring interconnect.

Preferably, the extrusion device includes cylinder support, propelling movement cylinder, stripper plate and extrusion piece, two fixed mounting has cylinder support between the bracing piece, fixed mounting has the propelling movement cylinder in the cylinder support, the output of propelling movement cylinder and the one end fixed mounting stripper plate of stripper plate, the through-hole has been seted up to the one end symmetry of stripper plate, the stripper plate cup joints on two bracing pieces, the other end bottom surface fixed mounting of stripper plate has the extrusion piece, the extrusion piece is the rubber material.

Preferably, the clamping device comprises an installation ring, clamping blocks, clamping springs and L-type limiting clamps, the installation ring is fixedly installed on one side of the supporting block, grooves are symmetrically formed in the inner wall of the installation ring, the grooves of the installation ring are fixedly connected with one ends of the clamping springs, the clamping blocks are fixedly connected to the other ends of the clamping springs, L-type limiting clamps are fixedly installed on the bottom face of one end, far away from the rotating rod, of the supporting block, and through holes are formed in one end of the L-type limiting clamps.

Preferably, a rubber strip is fixedly mounted on the inner side of one end of each limiting supporting leg.

Compared with the prior art, the beneficial effects of the utility model are that if need the during operation, the motor work rotates, the rotation that drives the bull stick changes clamping device out, install the syringe in the installation circle again, grip block and clamping spring in the installation circle are fixed the syringe, L type spacing clamp cooperation grip block carries out spacing fixed to the syringe together with clamping spring in addition, the motor rotates afterwards and changes clamping device back, lay the sample ware inside equipment through fixing device, spacing landing leg of symmetry installation carries on spacingly through dragging of spacing spring to the sample ware in the fixing device, extrusion device begins work afterwards and extrudes into the sample ware with the reagent in the syringe, this autoinjection device for gas chromatograph simple operation, convenient change, moreover, the steam generator is simple in structure, the practicality is higher.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a fixture;

FIG. 3 is a schematic view of a squeezing apparatus;

FIG. 4 is a schematic view of a clamping device;

fig. 5 is a top view of the fixture.

In the figure, the sample container comprises a main body frame 1, a fixing device 2, a squeezing device 3, a clamping device 4, a rotating rod 5, a supporting block 6, a motor support 7, a motor support 8, a rotating motor 9, a supporting rod 10, a base 11, a limiting support leg 12, a limiting spring 13, a cylinder support 14, a pushing cylinder 15, a squeezing plate 16, a squeezing block 17, a mounting ring 18, a clamping block 19, a clamping spring 19, a limiting clamp 20 and L, a syringe 21, a sample container 22.

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. 1-5, the present invention provides a technical solution: an automatic sample introduction device for a gas chromatograph comprises a main body frame 1, a fixing device 2, an extrusion device 3 and a clamping device 4, wherein one end of the inside of the main body frame 1 is rotatably connected with a rotating rod 5 through a rotating shaft, the bottom of the rotating rod 5 is fixedly connected with a gear, the middle of the rotating rod 5 is fixedly provided with a supporting block 6, one side of the supporting block 6 is fixedly provided with the clamping device 4, an injector 21 is arranged in the clamping device 4, one end of the bottom of the main body frame 1 is fixedly provided with a motor bracket 7, a rotating motor 8 is fixedly arranged in the motor bracket 7, the output end of the rotating motor 8 is fixedly provided with a gear, the gear on the rotating rod 5 and the gear on the rotating motor 8 are mutually arranged, one end of the main body frame 1, which is far away from the rotating rod 5, is symmetrically and fixedly provided with, the fixing device 2 is fixedly installed at the bottom end of the back of the main body frame 1, and a sample vessel 22 is fixed in the fixing device 2.

Fixing device 2 includes base 10, spacing landing leg 11 and spacing spring 12, base 10 fixed mounting is in the inside bottom of main part frame 1, four recesses have been seted up to the top symmetry of base 10, four spacing landing legs 11, four are installed to the symmetry in the recess of base 10 the one end of spacing landing leg 11 is passed through spacing spring 12 interconnect, to sample ware 22's fixed, prevents its removal.

The squeezing device 3 comprises a cylinder support 13, a pushing cylinder 14, a squeezing plate 15 and a squeezing block 16, wherein the cylinder support 13 is fixedly mounted between the support rods 9, the pushing cylinder 14 is fixedly mounted in the cylinder support 13, the output end of the pushing cylinder 14 and one end of the squeezing plate 15 are fixedly mounted on the squeezing plate 15, through holes are symmetrically formed in one end of the squeezing plate 15, the squeezing plate 15 is sleeved on the two support rods 9, the squeezing block 16 is fixedly mounted on the bottom surface of the other end of the squeezing plate 15, and the squeezing block 16 is made of rubber and is convenient for squeezing out reagents in the injector 21.

The clamping device 4 comprises an installation ring 17, a clamping block 18, a clamping spring 19 and an L-type limiting clamp 20, the installation ring 17 is fixedly installed on one side of the supporting block 6, grooves are symmetrically formed in the inner wall of the installation ring 17, the grooves of the installation ring 17 are fixedly connected with one end of the clamping spring 19, the clamping block 18 is fixedly connected with the other end of the clamping spring 19, the L-type limiting clamp 20 is fixedly installed on the bottom surface of one end, far away from the rotating rod 5, of the supporting block 6, one end of the L-type limiting clamp 20 is provided with a through hole, and the injector 21 is limited and clamped.

The rubber strip is fixedly mounted on the inner side of one end of the limiting supporting leg 11, the sample vessel 22 is protected, and resistance is increased to better complete limiting work.

The working principle is that when the device needs to work, the rotating motor 8 rotates to drive the rotating rod 5 to rotate, the clamping device 4 is rotated out, the injector 21 is installed on the installation ring 17, the injector 21 is limited through the matching of the clamping block 18 and the clamping spring 19, the L-type limiting clamp 20 simultaneously limits the injector 21, then the rotating motor 8 rotates the clamping device 4 back, the sample dish 22 is placed inside the device through the fixing device 2, the sample dish 22 is limited through the matching of the limiting supporting legs 11 and the limiting springs 12, then the extruding device 3 starts to work, the pushing air cylinder 14 drives the extruding plate 15 to press downwards, the extruding block 16 installed on the extruding plate 15 extrudes the injector 21, and reagents in the injector 21 are extruded into the sample dish 22.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an autoinjection device for gas chromatograph, includes main part frame (1), fixing device (2), extrusion device (3) and clamping device (4), its characterized in that: the device comprises a main body frame (1), a rotating rod (5) is rotatably connected to one end of the inside of the main body frame (1) through a rotating shaft, a gear is fixedly connected to the bottom of the rotating rod (5), a supporting block (6) is fixedly installed at the middle of the rotating rod (5), a clamping device (4) is fixedly installed on one side of the supporting block (6), an injector (21) is installed in the clamping device (4), a motor support (7) is fixedly installed at one end of the bottom of the main body frame (1), a rotating motor (8) is fixedly installed in the motor support (7), a gear is fixedly installed at the output end of the rotating motor (8), the gear on the rotating rod (5) and the gear on the rotating motor (8) are mutually arranged, a supporting rod (9) is symmetrically and fixedly installed at one end, far away from the rotating rod (5), of the main body frame (1, the back bottom fixed mounting of main part frame (1) has fixing device (2), fixing device (2) internal fixation has sample ware (22).

2. The autoinjection device for gas chromatograph of claim 1, wherein: fixing device (2) are including base (10), spacing landing leg (11) and spacing spring (12), base (10) fixed mounting is in the inside bottom of main part frame (1), four recesses have been seted up to the top symmetry of base (10), four spacing landing legs (11), four are installed to the symmetry in the recess of base (10) the one end of spacing landing leg (11) is through spacing spring (12) interconnect.

3. The autoinjection device for gas chromatograph of claim 1, wherein: extrusion device (3) include cylinder support (13), propelling movement cylinder (14), stripper plate (15) and extrusion piece (16), two fixed mounting has cylinder support (13) between bracing piece (9), fixed mounting has propelling movement cylinder (14) in cylinder support (13), the output of propelling movement cylinder (14) and one end fixed mounting stripper plate (15) of stripper plate (15), the through-hole has been seted up to the one end symmetry of stripper plate (15), stripper plate (15) cup joint on two bracing pieces (9), the other end bottom surface fixed mounting of stripper plate (15) has extrusion piece (16), extrusion piece (16) are the rubber material.

4. The automatic sample introduction device for the gas chromatograph according to claim 1, wherein the clamping device (4) comprises a mounting ring (17), a clamping block (18), a clamping spring (19) and an L-type limiting clamp (20), the mounting ring (17) is fixedly mounted on one side of the supporting block (6), grooves are symmetrically formed in the inner wall of the mounting ring (17), the grooves of the mounting ring (17) are fixedly connected with one end of the clamping spring (19), the other end of the clamping spring (19) is fixedly connected with the clamping block (18), a L-type limiting clamp (20) is fixedly mounted on the bottom surface of one end, far away from the rotating rod (5), of the supporting block (6), and a through hole is formed in one end of the L-type limiting clamp (20).

5. The autoinjection device for gas chromatograph of claim 2, wherein: and a rubber strip is fixedly arranged on the inner side of one end of the limiting supporting leg (11).