CN220104957U

CN220104957U - Gas chromatograph-mass spectrometer sampling port sealing device

Info

Publication number: CN220104957U
Application number: CN202321519582.5U
Authority: CN
Inventors: 赵启华; 王文毅; 魏涛; 颜咏坤; 贺蓉; 陈玉昌
Original assignee: Jiangxi Youer Testing And Certification Co ltd
Current assignee: Jiangxi Youer Testing And Certification Co ltd
Priority date: 2023-06-14
Filing date: 2023-06-14
Publication date: 2023-11-28
Anticipated expiration: 2033-06-14

Abstract

The utility model relates to the technical field of gas chromatography-mass spectrometer combined instruments, in particular to a gas chromatography-mass spectrometer combined instrument sample inlet sealing device. The utility model provides a gas chromatograph-mass spectrometer sample inlet sealing device which can prevent part of samples remained on a pipe wall from flowing back and improve tightness. The gas chromatograph-mass spectrometer sampling port sealing device comprises a base, a fixing frame, a sampling assembly and the like, wherein the fixing frame is connected to the rear side of the middle part of the base, the sampling assembly is connected to the fixing frame in a sliding mode, and the sampling assembly comprises a storage pipe, a one-way valve, a connecting pipe and a needle. According to the utility model, the needle is moved downwards to be inserted into the sample tube, and the sample is extracted through the one-way valve under the action of the extraction equipment, so that the effects of preventing the part of the sample remained on the tube wall from flowing back and improving the tightness can be achieved.

Description

Gas chromatograph-mass spectrometer sampling port sealing device

Technical Field

The utility model relates to the technical field of gas chromatography-mass spectrometer combined instruments, in particular to a gas chromatography-mass spectrometer combined instrument sample inlet sealing device.

Background

The gas chromatograph-mass spectrometer can effectively separate and accurately qualify and quantify components of all vaporizable mixtures, is widely applied to the fields of environmental protection industry, electronic industry, textile industry, petrochemical industry, essence and spice industry, medicine industry, agriculture, food safety and the like, and when the gas chromatograph-mass spectrometer is used for extracting samples, a sample inlet needs to be sealed in order to avoid leakage of the samples, and an existing sample inlet sealing device is usually provided with a sample inlet valve port, so that the samples are conveniently and rapidly guided into the device through a conveying pipeline, the feeding stability of the device is improved, however, the existing device easily causes backflow of partial samples remained on a pipe wall after extraction, and thus the leakage of the samples is caused.

Therefore, in order to solve the above problems, a sealing device for a sample inlet of a gas chromatograph-mass spectrometer, which can prevent the backflow of a part of the sample remained on the tube wall and improve the tightness, has been developed.

Disclosure of Invention

In order to overcome the defect that the existing device easily causes backflow of partial samples remained on the tube wall after extraction so as to cause leakage of the samples, the utility model provides the gas chromatograph-mass spectrometer sample inlet sealing device capable of preventing backflow of partial samples remained on the tube wall and improving tightness.

The technical scheme of the utility model is as follows:

the utility model provides a gas chromatography-mass spectrometer sampling port sealing device, the on-line screen storage device comprises a base, the mount, advance the appearance subassembly, the storage tube, the check valve, the connecting pipe, syringe needle and sealing mechanism, the mount is connected with at the middle part rear side, slide-type on the mount is connected with advance the appearance subassembly, advance the appearance subassembly including the storage tube, the check valve, connecting pipe and syringe needle on the mount, it has the sampling port to open at the storage tube bottom, the lower part is connected with the check valve in the storage tube, the storage tube top is connected with the connecting pipe, the connecting pipe is connected with extraction equipment, mount lower part slide-type is connected with the syringe needle, the storage tube moves down and drives the syringe needle and move down, make the syringe needle can insert the sample tube, carry out the extraction through the check valve to the sample under the effect of extraction equipment, carry out detection analysis to the sample in the gas chromatography-mass spectrometer again, be equipped with on the mount and be used for carrying out sealed sealing mechanism to the sampling port.

In a preferred embodiment of the utility model, the airtight mechanism comprises a cylinder, a connecting frame, a first spring, a rotating column, a sealing gasket, a connecting bracket, a second spring and a lifting rod, wherein the top of the fixing frame is connected with the cylinder, the connecting frame is connected to the telescopic end of the cylinder, the front part of the connecting frame is connected with a sample injection assembly, the lifting rod is connected to the upper part of the fixing frame in a sliding mode, the first spring is connected between the lifting rod and the fixing frame, the rotating column is connected to the lower part of the fixing frame in a rotating mode, the lower part of the lifting rod is connected with the rotating column in a sliding mode and is connected with the rotating manner, the sealing gasket is connected to the top of the rotating column, the connecting bracket is connected with the fixing frame in a sliding mode, the connecting bracket is connected with the fixing frame in a connecting mode, the telescopic end of the cylinder drives the storage tube to move through the connecting frame, the lifting rod is driven to slide downwards when the connecting frame moves downwards, the lifting rod is driven by the rotating column to rotate and separate from the sample injection port, the connecting tube is driven to move downwards when the lifting rod moves downwards, the connecting tube drives the connecting bracket to slide downwards, the second spring drives the connecting bracket to slide downwards, the needle head is driven by the second spring to rebound after the lifting rod is completed, the connecting bracket drives the elastic rod to move upwards through the reset spring to rebound through the reset spring to drive the sealing gasket to slide upwards, and the reset spring to slide upwards through the reset connection to the sealing rod.

In a preferred embodiment of the utility model, the device further comprises a placement mechanism, the placement mechanism comprises a supporting bottom plate, a placement frame and an adjusting component, at least two guide sliding grooves are formed in the base, the supporting bottom plate is connected to the guide sliding grooves in a sliding mode, the placement frame is connected to the supporting bottom plate in a sliding mode, the adjusting component is connected to the supporting bottom plate in a sliding mode, and the adjusting component slides on the supporting bottom plate to drive the placement frame to slide up and down, so that the height of a sample tube on the placement frame can be adjusted.

In a preferred embodiment of the utility model, a limiting frame is arranged in the middle of the base, so that the needle head can be limited.

In a preferred embodiment of the utility model, the adjusting assembly comprises a movable frame, a push rod and an elastic piece, wherein the left part and the right part of the supporting bottom plate are both connected with the movable frame in a sliding mode, the movable frames are both connected with the push rod in a sliding mode, the elastic piece is connected between the push rod and the adjacent movable frame, and the push rod slides to the adjacent side to clamp the placing frame, so that the elastic piece is stressed and compressed to push the movable frame to move on the supporting bottom plate to drive the placing frame to move.

In a preferred embodiment of the present utility model, the elastic member is a return spring.

The utility model has the beneficial effects that:

1. according to the utility model, the needle is moved downwards to be inserted into the sample tube, and the sample is extracted through the one-way valve under the action of the extraction equipment, so that the effects of preventing the part of the sample remained on the tube wall from flowing back and improving the tightness can be achieved.

2. According to the utility model, the supporting bottom plate slides left and right on the guide chute, the adjusting component slides on the supporting bottom plate to drive the placing rack to slide up and down, so that the position of the sample tube can be quickly adjusted, and the sample can be conveniently extracted.

Drawings

Fig. 1 is a schematic perspective view of the present utility model.

Fig. 2 is a schematic structural view of the present utility model.

Fig. 3 is a partial perspective view of the present utility model.

Fig. 4 is a schematic perspective view of the sealing mechanism of the present utility model.

Fig. 5 is a schematic perspective view of the placement mechanism of the present utility model.

Wherein the above figures include the following reference numerals: 1_base, 2_mount, 3_sample injection assembly, 30_reservoir, 31_check valve, 32_connection tube, 33_needle, 4_closure mechanism, 40_cylinder, 41_connection frame, 42_first spring, 43_spin column, 44_gasket, 45_connection bracket, 46_second spring, 47_lifter, 5_placement mechanism, 50_guide chute, 51_support floor, 52_placement frame, 53_adjustment assembly.

Detailed Description

Although the utility model may be described with respect to a particular application or industry, those skilled in the art will recognize the broader applicability of the utility model. Those of ordinary skill in the art will recognize such things as: terms such as above, below, upward, downward, etc. are used for describing the drawings, and do not represent limitations upon the scope of the present utility model defined by the appended claims. Such as: any numerical designation of the first or second, etc. is merely exemplary and is not intended to limit the scope of the present utility model in any way.

The utility model provides a gas chromatograph-mass spectrometer sampling port sealing device, as shown in fig. 1-3, including base 1, mount 2, advance the appearance subassembly 3, storage tube 30, check valve 31, connecting pipe 32, syringe needle 33 and closing mechanism 4, mount 1 middle part rear side is connected with mount 2, it is connected with advance the appearance subassembly 3 to slide on the mount 2, it is connected with storage tube 30 to advance the appearance subassembly 3 including storage tube 31, check valve 31, connecting pipe 32 and syringe needle 33 to advance the appearance subassembly 3, it has the sampling port to open at storage tube 30 bottom on the mount 2, the lower part is connected with check valve 31 in the storage tube 30, the storage tube 30 top is connected with connecting pipe 32, connecting pipe 32 is connected with extracting equipment, mount 2 lower part sliding connection has syringe needle 33, the base 1 middle part is equipped with the spacing, can carry out spacingly to syringe needle 33, be equipped with closing mechanism 4 on the mount 2.

As shown in fig. 1, 2 and 4, the sealing mechanism 4 comprises an air cylinder 40, a connecting frame 41, a first spring 42, a rotating column 43, a sealing gasket 44, a connecting bracket 45, a second spring 46 and a lifting rod 47, wherein the top of the fixing frame 2 is connected with the air cylinder 40, the connecting frame 41 is connected to the telescopic end of the air cylinder 40, the front part of the connecting frame 41 is connected with the sample injection assembly 3, the upper part of the fixing frame 2 is slidably connected with the lifting rod 47, the first spring 42 is connected between the lifting rod 47 and the fixing frame 2, the rotating column 43 is rotatably connected to the lower part of the fixing frame 2, the lower part of the lifting rod 47 is slidably and rotatably connected with the rotating column 43, the sealing gasket 44 is connected to the top of the rotating column 43, the upper part of the needle 33 is connected with the connecting bracket 45, the connecting bracket 45 is slidably connected with the fixing frame 2, and the second spring 46 is connected between the connecting bracket 45 and the fixing frame 2.

When the gas chromatograph-mass spectrometer sample inlet needs to be sealed, the device can be used for operation, firstly, the device is installed on the gas chromatograph-mass spectrometer through the base 1, then the connecting pipe 32 is connected with the extracting equipment, then a sample needing to be detected and analyzed is placed on the base 1, then the cylinder 40 is started, the telescopic end of the cylinder 40 drives the storage pipe 30 to move through the connecting frame 41, the connecting frame 41 contacts with the lifting rod 47 when moving downwards, the lifting rod 47 is driven to slide downwards, the first spring 42 is stressed and compressed, the lifting rod 47 moves downwards to drive the sealing pad 44 to rotate through the rotating column 43 and separate from the sample inlet, and when the storage pipe 30 moves downwards to contact with the needle 33, the needle 33 is driven to move downwards to insert the sample tube, the sample is extracted through the one-way valve 31 under the action of the extracting equipment, the extracted sample is conveyed into the gas chromatograph-mass spectrometer for detection and analysis, the needle 33 moves to drive the connecting support 45 to slide downwards, the second spring 46 is stressed and compressed, after the extraction is finished, the telescopic end of the air cylinder 40 drives the storage tube 30 to move upwards for reset through the connecting support 41, the first spring 42 rebounds to drive the lifting rod 47 to slide upwards for reset, the lifting rod 47 slides to drive the sealing gasket 44 to rotate for reset through the rotating column 43 to seal the sample inlet, the second spring 46 rebounds to drive the needle 33 to move upwards for reset through the connecting support 45, and the air cylinder 40 is closed after detection and analysis work is finished.

As shown in fig. 1, fig. 2 and fig. 5, the device further comprises a placement mechanism 5, the placement mechanism 5 comprises a supporting bottom plate 51, a placement frame 52 and an adjusting component 53, at least two guide sliding grooves 50 are formed in the base 1, the supporting bottom plate 51 is connected to the guide sliding grooves 50 in a sliding mode, the placement frame 52 is connected to the supporting bottom plate 51 in a sliding mode, the adjusting component 53 comprises a movable frame, a pushing rod and a reset spring, the left portion and the right portion of the supporting bottom plate 51 are connected to the movable frame in a sliding mode, the pushing rod is connected with the pushing rod in a sliding mode, the reset spring is connected between the pushing rod and the adjacent movable frame, the pushing rod slides to the adjacent side to clamp the placement frame 52, so that the reset spring is compressed under stress, and the movable frame is pushed to move on the supporting bottom plate 5l to drive the placement frame 52 to move.

By using the placing mechanism 5 of the device, a sample tube can be placed on the placing frame 52, the supporting bottom plate 51 slides left and right on the guide chute 50 to drive the sample tube to move, the adjusting component 53 slides on the supporting bottom plate 51 to drive the placing frame 52 to slide up and down, and the height of the sample tube on the placing frame 52 can be adjusted, so that the sample can be conveniently extracted.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. A gas chromatography-mass spectrometer sampling port sealing device is characterized in that: including base (1), mount (2), advance kind subassembly (3), storage tube (30), check valve (31), connecting pipe (32), syringe needle (33) and sealing mechanism (4), base (1) middle part rear side is connected with mount (2), slide-type connection has advance kind subassembly (3) on mount (2), advance kind subassembly (3) including storage tube (30), check valve (31), connecting pipe (32) and syringe needle (33), slide-type connection has storage tube (30) on mount (2), open the sample inlet in storage tube (30) bottom is connected with check valve (31), storage tube (30) top is connected with connecting pipe (32), connecting pipe (32) are connected with extraction equipment, mount (2) lower part slide-type connection has syringe needle (33), storage tube (30) downwardly moving drives syringe needle (33) and moves for syringe needle (33) can insert the sample tube, carry out the extraction to the sample through check valve (31) under the effect of extraction equipment, carry out sealed sample inlet (4) to sample analysis to the mount (2) in carrying out the gas chromatograph-mass spectrometer that will extract again.

2. The gas chromatograph-mass spectrometer sample inlet sealing device according to claim 1, wherein: the sealing mechanism (4) comprises an air cylinder (40), a connecting frame (41), a first spring (42), a rotating column (43), a sealing gasket (44), a connecting bracket (45), a second spring (46) and a lifting rod (47), wherein the top of the fixing frame (2) is connected with the air cylinder (40), the connecting frame (41) is connected to the telescopic end of the air cylinder (40), the front part of the connecting frame (41) is connected with the sample injection assembly (3), the upper part of the fixing frame (2) is connected with the lifting rod (47) in a sliding manner, the first spring (42) is connected between the lifting rod (47) and the fixing frame (2), the lower part of the fixing frame (2) is rotationally connected with the rotating column (43), the lower part of the lifting rod (47) is slidingly and rotationally connected with the rotating column (43), the upper part of the needle head (33) is connected with the connecting bracket (45), the telescopic end of the connecting bracket (45) is slidingly connected with the fixing frame (2), the second spring (46) is connected between the connecting bracket (45) and the telescopic end of the air cylinder (40) drives the connecting frame (30) to move downwards through the connecting frame (41) to drive the lifting rod (47) to move downwards when contacting the lifting rod (47), the first spring (42) is compressed under force, the lifting rod (47) moves downwards, the sealing gasket (44) is driven to rotate through the rotating column (43) to be separated from the sample inlet, the needle (33) is driven to move downwards when the storage tube (30) moves downwards to be contacted with the needle (33), the needle (33) moves to drive the connecting support (45) to slide downwards, the second spring (46) is compressed under force, after extraction is completed, the telescopic end of the air cylinder (40) drives the storage tube (30) to move upwards to reset through the connecting support (41), the lifting rod (47) is driven to slide upwards to reset through resilience of the first spring (42), the sealing gasket (44) is driven to rotate to reset through the rotating column (43) to seal the sample inlet, and resilience of the second spring (46) drives the needle (33) to move upwards to reset through the connecting support (45).

3. The gas chromatograph-mass spectrometer sample inlet sealing device according to claim 2, wherein: still including placing mechanism (5), placing mechanism (5) are including supporting baseplate (51), rack (52) and adjusting part (53), it has two at least direction spouts (50) to open on base (1), it is connected with supporting baseplate (51) to slide on direction spout (50), it is connected with rack (52) to slide on supporting baseplate (51), it is connected with adjusting part (53) to slide on supporting baseplate (51), adjusting part (53) slide on supporting baseplate (51) and drive rack (52) and slide from top to bottom, can adjust the height of sample tube on rack (52).

4. The gas chromatograph-mass spectrometer sample inlet sealing device according to claim 1, wherein: the middle part of the base (1) is provided with a limit frame.

5. A gas chromatograph-mass spectrometer inlet seal as in claim 3, wherein: the adjusting component (53) comprises a movable frame, a pushing rod and an elastic piece, wherein the left part and the right part of the supporting bottom plate (51) are connected with the movable frame in a sliding mode, the movable frame is connected with the pushing rod in a sliding mode, and the elastic piece is connected between the pushing rod and the adjacent movable frame.

6. A gas chromatograph-mass spectrometer inlet seal as in claim 3, wherein: the elastic piece is a return spring.