CN209911309U

CN209911309U - Sample feeding disc of gas chromatography-mass spectrometer

Info

Publication number: CN209911309U
Application number: CN201920369100.XU
Authority: CN
Inventors: 陈强
Original assignee: Suzhou City Hundred Believes Environment Measuring Engineering Co Ltd
Current assignee: Suzhou City Hundred Believes Environment Measuring Engineering Co Ltd
Priority date: 2019-03-22
Filing date: 2019-03-22
Publication date: 2020-01-07
Anticipated expiration: 2029-03-22

Abstract

The utility model discloses a gas chromatography-mass spectrometer's sample inlet dish, including advancing kind seat and clamping device, advance kind seat and set up circular recess, be equipped with the arc spacing groove on the lateral wall of circular recess, clamping device is located circular recess, and clamping device is equipped with holder and actuating mechanism, and the holder articulates in circular recess's bottom, and actuating mechanism drives the holder swing. The test tube of gas chromatography-mass spectrometer is placed in the arc spacing groove, and actuating mechanism drive holder with the test tube centre gripping between arc spacing groove and holder. This design is placed back in the arc spacing groove at the test tube, and the holder is by interior and outer centre gripping test tube again, so, the test tube is stably in between arc spacing groove and the holder.

Description

Sample feeding disc of gas chromatography-mass spectrometer

Technical Field

The utility model relates to an environmental protection technology field, concretely relates to sampling equipment.

Background

The patent document with the publication number of CN 208155953U discloses a gas chromatography-mass spectrometry combination instrument, including the frame, be equipped with sample injector and sample injection dish on the frame, be equipped with the sample storage rack on the frame, sample injection dish includes the appearance seat and installs in the test tube installation area of appearance seat, and the test tube installation area includes a plurality of confession test tube male installation covers, is equipped with the flexible band between the adjacent installation cover, is equipped with the locating part of locking test tube installation area on the appearance seat.

SUMMERY OF THE UTILITY MODEL

The utility model solves the technical problem that: stably holding a test tube of a gas chromatograph-mass spectrometer.

In order to solve the technical problem, the utility model provides a following technical scheme: a sample feeding disc of a gas chromatography-mass spectrometer comprises a sample feeding seat and a clamping device, wherein the sample feeding seat is provided with a circular groove, the side wall of the circular groove is provided with an arc-shaped limiting groove, the clamping device is positioned in the circular groove, the clamping device is provided with a clamping piece and a driving mechanism, the clamping piece is hinged to the bottom of the circular groove, the driving mechanism drives the clamping piece to swing, and the clamping piece swings to be away from or close to the arc-shaped limiting groove.

According to the technical scheme, firstly, a test tube of the gas chromatography-mass spectrometer is placed in an arc-shaped limiting groove; secondly, actuating mechanism drive holder swings from inside to outside, with the test tube centre gripping between arc spacing groove and holder. When taking out the test tube, actuating mechanism drive holder is by outer and swing in, and the holder no longer the centre gripping test tube, and the test tube can be followed and taken out in the arc spacing groove. The driving mechanism drives the clamping piece to swing from inside to outside, namely, the clamping piece is close to the arc limiting groove, and the top end of the clamping piece is far away from the center of the circular groove. The bottom end of the clamping piece is hinged with the bottom of the circular groove.

The setting is erect in the arc spacing groove, highly is less than the test tube, and the test tube is placed in the arc spacing groove, and the test tube makes progress outstanding arc spacing groove. Highly being less than the test tube when the holder erects, also being less than the arc spacing groove, so design, the test tube is put into the arc spacing groove and is taken out the arc spacing groove convenience.

The utility model discloses make the test tube be located circular recess, rather than make the test tube enclose in the periphery of advancing the sample dish, can avoid the test tube to drop, fall on ground, this is the stable embodiment of test tube. After the test tube was placed in the arc spacing groove, the holder is by interior outside centre gripping test tube again, so, the test tube further steadily is located between arc spacing groove and holder.

Drawings

The invention will be further explained with reference to the drawings:

FIG. 1 is a schematic diagram of a gas chromatograph-mass spectrometer;

FIG. 2 is a schematic view of a sample tray containing test tubes;

FIG. 3 is an exploded view of FIG. 2;

FIG. 4 is an enlarged view taken at A in FIG. 3;

FIG. 5 is a schematic view of a sample tray;

fig. 6 is an enlarged view of fig. 5 at B.

The symbols in the drawings illustrate that:

01. a sample feeding disc; 02. a machine base; 03. a sample storage rack; 031. a test tube hole; 04. a sample injector;

10. a circular groove; 11. an arc-shaped limiting groove; 12. a hinged seat; 13. the hinge seat faces the end face of the arc-shaped limiting groove;

20. a clamping member; 21. a lifting plate; 22. a lift pin; 23. a lifting screw; 24. branching; 25. an inclined groove; 26. a clamping portion;

30. a test tube; 31. a flexible cord; 32. a circular ring.

Detailed Description

Referring to fig. 1, the gas chromatograph-mass spectrometer is provided with a base 02, a sample tray 01, a sample holder 03, and a sample injector 04. The sample feeding disc 01, the sample storage rack 03 and the sample injector 04 are all mounted on the base 02, the sample injector storage rack is located beside the sample feeding disc, and the sample injector is located above the sample feeding disc.

With reference to fig. 2 to 6, the sample feeding tray 01 of the gas chromatography-mass spectrometer comprises a sample feeding seat and a clamping device, wherein the sample feeding seat is provided with a circular groove 10, the side wall of the circular groove is provided with an arc-shaped limiting groove 11, the clamping device is positioned in the circular groove, the clamping device is provided with a clamping piece 20 and a driving mechanism, the clamping piece is hinged to the bottom of the circular groove, the driving mechanism drives the clamping piece to swing, and the clamping piece swings to be far away from or close to the arc-shaped limiting groove.

The bottom of circular recess 10 is equipped with articulated seat 12, and the bottom of holder 20 is articulated with articulated seat through the hinge pin, and articulated seat is the arc towards the terminal surface of arc spacing groove 11. The space between arc spacing groove and the articulated seat, radial distance promptly can hold a test tube. Articulated seat is the arc towards the terminal surface of arc spacing groove, so, places the test tube between arc spacing groove and articulated seat and can be fixed a position by the arcwall face of arc spacing groove and the arcwall face of articulated seat accurately. However, since the hinge base is short compared to the arc-shaped stopper groove, it is difficult to stably position the test tube without the clamping of the clamping member. And the part of the clamping piece for clamping the test tube is the middle part or the upper part of the test tube.

As an improvement, the hinge seat 12 faces the end surface of the arc-shaped limiting groove 11, and the radius thereof gradually decreases from top to bottom. Namely, the arc end surface of the hinging seat facing the arc limiting groove is in a flaring shape or in a conical shape with a big top and a small bottom. Make things convenient for the test tube from the top to insert between the arc terminal surface of arc spacing groove and articulated seat.

The bottom of the circular recess 10 is provided with a hinge seat 12, i.e. the hinge seat is mounted on the bottom surface of the circular recess. The bottom of the sample introduction seat is provided with a rotating shaft which is arranged on a base of the gas chromatography-mass spectrometer.

The driving mechanism comprises a lifting disc 21, a lifting pin 22 and a lifting screw 23; the lifting disc is provided with a branch 24, a lifting pin is arranged on the branch, the clamping piece is provided with an inclined groove 25, and the lifting pin is matched in the inclined groove; the lifting disc is pivoted with the lifting screw rod, the lifting screw rod is vertically arranged, and the bottom end of the lifting screw rod is in threaded connection with the bottom of the circular groove 10. The number of the arc-shaped limiting grooves 11 is the same as that of the clamping pieces 20, the number of the clamping pieces is the same as that of the branches 24 on the lifting disc, all the branches are uniformly distributed along the circumferential direction of the lifting disc 21, and all the arc-shaped limiting grooves are uniformly distributed along the circumferential direction of the circular groove 10. The inclined groove 25 is inclined with respect to the longitudinal direction of the holder, and the inclined groove is an inclined strip-shaped groove. The lifting disc is horizontally arranged, the lifting screw is rotated in the forward direction, the bottom end of the lifting screw penetrates into the bottom of the circular groove, the lifting screw descends, the lifting screw is pivoted with the lifting disc, the lifting disc cannot rotate due to the limitation of the clamping piece, the descending lifting screw drives the lifting disc to descend, branches on the lifting disc naturally descend, and the lifting pin also descends. The lifter pin that descends perpendicularly removes in the inclined groove, and drive holder 20 swings to arc spacing groove direction, and the holder presss from both sides tight test tube. The center of the lifting disc is provided with a pivot hole, the lifting screw rod is inserted in the pivot hole, and the lifting screw rod is pivoted in the pivot hole through a bearing.

The clamping member 20 is provided with a clamping portion 26, and one surface of the clamping portion facing the arc-shaped limiting groove 11 is arc-shaped. The clamping part is located the upper portion of holder, and when the centre gripping test tube, curved clamping part and test tube direct contact to accurately fix a position the test tube.

The top of lifting screw 23 is equipped with the knob, and when the test tube was loosened to the needs, the antiport the knob, lifting screw antiport, lifting screw came out from the screw of circular recess bottom, and lifting screw has risen, drives lifting disk 21 and rises, and lift pin 22 removes in the inclined groove 25, and drive holder 20 swings to the central direction of lifting disk, promptly, and arc spacing groove 11 is kept away from to the clamping part of holder, and the test tube can be followed and taken out in the arc spacing groove.

As an option, the number of the arc-shaped limiting grooves 11 is sixteen, and accordingly, the sample feeding tray can simultaneously hold sixteen test tubes 30, as shown in fig. 3, the sixteen test tubes are connected by a soft rope 31, the soft rope is provided with sixteen circular rings 32, and each circular ring is sleeved with one test tube. A plurality of rows of test tube holes 031 are seted up to sample storage rack 03, and a row of test tube hole is sixteen, and sixteen test tubes connected by the flexible cord can be put into a row of test tube hole.

Claims

1. The sample feeding disk of the gas chromatography-mass spectrometer comprises a sample feeding seat and a clamping device, and is characterized in that: circular recess (10) are seted up to the appearance seat, are equipped with arc spacing groove (11) on the lateral wall of circular recess, clamping device is located circular recess, and clamping device is equipped with holder (20) and actuating mechanism, and the holder articulates in the bottom of circular recess, and actuating mechanism drives the holder swing, and the holder swing is kept away from or is close the arc spacing groove.

2. The sample tray of a gas chromatograph-mass spectrometer of claim 1, wherein: the driving mechanism comprises a lifting disc (21), a lifting pin (22) and a lifting screw (23);

the lifting disc is provided with a branch (24), a lifting pin is arranged on the branch, the clamping piece is provided with an inclined groove (25), and the lifting pin is matched in the inclined groove;

the lifting disc is pivoted with the lifting screw rod, the lifting screw rod is vertically arranged, and the bottom end of the lifting screw rod is in threaded connection with the bottom of the circular groove (10).

3. The sample tray of a gas chromatograph-mass spectrometer of claim 1, wherein: the bottom of circular recess (10) is equipped with articulated seat (12), and the bottom of holder (20) is articulated through articulated round pin and articulated seat, and articulated seat is the arc towards the terminal surface of arc spacing groove (11).

4. The sample tray of a gas chromatograph-mass spectrometer of claim 3, wherein: the hinged seat (12) faces the end face of the arc-shaped limiting groove (11), and the radius of the hinged seat gradually decreases from top to bottom.

5. The sample tray of a gas chromatograph-mass spectrometer of claim 1, wherein: the clamping piece (20) is provided with a clamping part (26), and one surface of the clamping part facing the arc-shaped limiting groove (11) is arc-shaped.

6. The gas chromatography-mass spectrometer plate of claim 2, wherein: the number of the arc-shaped limiting grooves (11) is the same as that of the clamping pieces (20), the number of the clamping pieces is the same as that of the branches (24) on the lifting disc, all the branches are uniformly distributed along the circumferential direction of the lifting disc (21), and all the arc-shaped limiting grooves are uniformly distributed along the circumferential direction of the circular groove (10).