CN218845443U

CN218845443U - Sampling tube of thermal desorption instrument

Info

Publication number: CN218845443U
Application number: CN202223118063.6U
Authority: CN
Inventors: 王海宇; 王晓伟; 宋权伟
Original assignee: Sanhe Huanyi Technology Co ltd
Current assignee: Sanhe Huanyi Technology Co ltd
Priority date: 2022-11-23
Filing date: 2022-11-23
Publication date: 2023-04-11
Anticipated expiration: 2032-11-23

Abstract

The utility model discloses a thermal desorption appearance sampling tube relates to the sampling equipment field, to two kinds of sealing methods of plug-and-play seal cap and thread seal cap of current thermal desorption appearance sampling tube port, the poor, the loaded down with trivial details problem of the latter complex operation of the former seal reliability, the following scheme of present proposition, it includes the sampling tube, the both ends of sampling tube are provided with seal structure: the device comprises a cover cap, a spring, a conical spring barrel, a sleeve and a silicone tube; first circular slot has been seted up to the one end of block, just the second circular slot has been seted up in the block, the block is located and has seted up the bell jar between first circular slot and the second circular slot, just first circular slot diameter is less than the second circular slot, the spring cup joints with the second circular slot, just the toper spring section of thick bamboo cup joints with the bell jar. The utility model discloses novel structure, the device is effectual has solved two kinds of sealing methods of plug-and-play seal cap and thread seal cap of current thermal desorption appearance sampling tube port, the poor, the loaded down with trivial details problem of the latter of former seal reliability.

Description

Sampling tube of thermal desorption instrument

Technical Field

The utility model relates to a sampling equipment field especially relates to a thermal desorption appearance sampling pipe.

Background

The thermal desorption instrument is a device which heats a substance to a certain temperature to release an adsorbed compound, and a sampling tube is a consumable material used by the thermal desorption instrument and is filled with an adsorbent;

in order to improve the accuracy of the using experimental result of the sampling tube, two ends of the sampling tube are required to be sealed and stored after the sampling tube is produced, so that the inner part is prevented from being polluted and losing efficacy, and the sealing element also belongs to one part of the sampling tube product;

in summary, in order to combine the advantages and solve the disadvantages of the two sealing structures, we propose a sampling tube of a thermal desorption instrument.

SUMMERY OF THE UTILITY MODEL

The utility model provides a pair of thermal desorption appearance sampling pipe has solved two kinds of sealing methods of plug-and-play seal cap and thread seal cap of current thermal desorption appearance sampling pipe port, former sealing reliability poor, the latter complex operation's problem.

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

the utility model provides a thermal desorption appearance sampling tube, includes the sampling tube, the both ends of sampling tube are provided with seal structure: comprises a cover cap, a spring, a conical spring barrel, a sleeve and a silicone tube;

the silicone tube sampling device is characterized in that a first circular groove is formed in one end of the cap, a second circular groove is formed in the cap, the cap is located between the first circular groove and the second circular groove, a conical groove is formed in the second circular groove, the diameter of the first circular groove is smaller than that of the second circular groove, the spring is sleeved with the second circular groove, the conical spring barrel is sleeved with the conical groove, the silicone tube is sleeved in the conical spring barrel, a third circular groove is formed in one end of the sleeve, the other end of the sleeve is communicated with the third circular groove, a fourth circular groove is formed in the other end of the sleeve, the sleeve is sleeved with the first circular groove, the silicone tube is partially sleeved with the fourth circular groove, and one end of the sampling tube is sleeved with the silicone tube after passing through the third circular groove and the fourth circular groove.

Preferably, the outer wall of the conical spring barrel is in a frustum shape, the middle part of the conical spring barrel is penetrated through by a round hole, the outer conical surface of the conical spring barrel is jointed with the conical groove in a sleeved mode, and the round hole in the middle part of the conical spring barrel is jointed with the outer wall of the silicone tube in a sleeved mode.

Preferably, the cutting grooves of the conical spring cylinder are staggered, so that the side wall of the conical spring cylinder is in a wave-shaped superposition shape.

Preferably, the cap is located in the second circular groove and is fixedly connected with the plug, and one end of the silicone tube is fixedly sleeved with the plug in a sealing manner.

Preferably, the spring is a compression spring, and the spring is provided with a pre-pressure: the two ends of the spring respectively support the cap and the conical spring barrel.

Preferably, the cap, the spring, the conical spring barrel, the sleeve, the silicone tube and the sampling tube are coaxially arranged.

The utility model has the advantages that:

1. when the sealing structure of the sampling tube is installed, the sleeve is pressed into the cap to push the conical spring cylinder to push the end with the larger diameter of the conical groove, the silicone tube is relaxed and loosened, the sampling tube is inserted, the sleeve spring is loosened to push the conical spring cylinder to reset and contract, the silicone tube is clamped on the sampling tube, and the plug, the silicone tube and the sampling tube are reliably sealed.

2. The sleeve of the device controls the conical spring barrel to be retracted and retracted, and guides and positions the sampling tube to be inserted into the silica gel tube through the third circular groove and the fourth circular groove, so that the sampling tube is smoothly inserted into the silica gel tube through the sleeve.

In conclusion, the device not only meets the convenience of plug and play, but also meets the requirement of reliable sealing of the sampling tube, and effectively solves the problems of poor sealing reliability of the plug and play sealing cap and complex operation of the screw thread sealing cap of the port of the sampling tube of the existing thermal desorption instrument.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a structural sectional view of the present invention.

Fig. 3 is a further cross-sectional view of the structure of fig. 2 according to the present invention.

Fig. 4 is an enlarged view of a structure in fig. 2 according to the present invention.

Fig. 5 is an enlarged view of the structure B in fig. 3 according to the present invention.

Fig. 6 is a exploded view of the sealing structure of the present invention.

Reference numbers in the figures: 1. a sampling tube; 2. capping; 201. a first circular groove; 202. a second circular groove; 203. a tapered slot; 204. a plug; 3. a spring; 4. a conical spring cartridge; 5. a sleeve; 501. a third circular groove; 502. a fourth circular groove; 6. a silicone tube.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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. 1-5, a thermal desorption appearance sampling pipe, includes sampling pipe 1, and sampling pipe 1's both ends are provided with seal structure: the sampling device comprises a cap 2, a spring 3, a conical spring barrel 4, a sleeve 5 and a silicone tube 6, wherein the cap 2, the spring 3, the conical spring barrel 4, the sleeve 5, the silicone tube 6 and the sampling tube 1 are coaxially arranged.

The sealing structure is summarized as follows: first circular slot 201 has been seted up to the one end of block 2, and set up second circular slot 202 in the block 2, block 2 is located and has seted up conical groove 203 between first circular slot 201 and the second circular slot 202, and first circular slot 201 diameter is less than second circular slot 202, spring 3 cup joints with second circular slot 202, and conical spring section of thick bamboo 4 cup joints with conical groove 203, silicone tube 6 cup joints in conical spring section of thick bamboo 4, and the one end of sleeve 5 has seted up third circular slot 501, the fourth circular slot 502 has been seted up to the sleeve 5 other end intercommunication third circular slot 501, sleeve 5 cup joints with first circular slot 201, and silicone tube 6 local cup joints with fourth circular slot 502, 1 one end of sampling tube is passed third circular slot 501, cup jointed with silicone tube 6 behind the fourth circular slot 502.

Referring to fig. 4 and 6, the outer wall of the conical spring barrel 4 is frustum-shaped, the middle part is penetrated by a round hole, the outer conical surface of the conical spring barrel 4 is jointed with the conical groove 203, the middle part round hole is jointed with the outer wall of the silicone tube 6, and the cutting groove of the conical spring barrel 4 is staggered, so that the side wall of the conical spring barrel 4 is in a wave-shaped superposition shape, the shape can lead the conical sleeve ring sleeve 4 to be jointed with the conical groove 203 for smooth relaxation or contraction, and the release and clamping of the silicone tube are completed.

Referring to fig. 4 and 5, a plug 204 is fixedly connected to the cap 2 in the second circular groove 202, one end of the silicone tube 6 is fixedly sleeved with the plug 204 in a sealing manner, and a sealant can be used between the silicone tube 6 and the plug 204.

With reference to fig. 4 and 5, the spring 3 is a compression spring, and the spring 3 is provided with a pre-pressure: two ends of the spring 3 respectively support the cap 2 and the conical spring barrel 4 tightly.

The device solves two kinds of sealed modes of plug-and-play seal cap and thread seal cap of current thermal desorption appearance sampling pipe port, and former sealing reliability is poor, the latter complex operation's theory of operation:

s1, clamping a sleeve 5 by a forefinger and a middle finger, pressing the outer end face of a cap 2 by a thumb, pressing the sleeve 5 into the cap 2, pushing a conical spring cylinder 4 to one end with a larger diameter of a conical groove 203 by the sleeve 5, compressing a spring 3, not squeezing the conical spring cylinder 4 by the side wall of the conical groove 203 at the moment, expanding the conical spring cylinder, and loosening a silicone tube 6;

s2, after the sleeve 5 is pressed into the cap 2, the silicone tube 6 is completely extruded into the fourth circular groove 502 of the sleeve 5 under the support of the cap 2, and at the moment, under the guiding and positioning actions of the third circular groove 501 and the fourth circular groove 502 of the sleeve 5, the sampling tube 1 is smoothly inserted into the silicone tube 6 through the sleeve 5;

s3, the fingers can be loosened at the moment, the spring 3 pushes the conical spring barrel 4 to one end of the conical groove 203 relative to the cover cap 2, the conical surface of the conical spring barrel 4 is extruded by the conical surface of the conical groove 203, the spring sleeve 4 contracts radially, the silicone tube 6 is clamped on the sampling tube 1, and the plug 204, the silicone tube 6 and the sampling tube 1 are sealed reliably at the moment.

To sum up, the operation process is summarized as that the sleeve 5 is pressed into the cap 2, and then the sampling tube 1 is inserted, so that the convenience of plug and play is met, and the requirement of reliable sealing of the sampling tube 1 is met.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a thermal desorption appearance sampling tube, includes sampling tube (1), its characterized in that, the both ends of sampling tube (1) are provided with seal structure: comprises a cover cap (2), a spring (3), a conical spring barrel (4), a sleeve (5) and a silicone tube (6);

first circular slot (201) have been seted up to the one end of block (2), just second circular slot (202) have been seted up in block (2), block (2) are located and have seted up between first circular slot (201) and second circular slot (202) conical groove (203), just first circular slot (201) diameter is less than second circular slot (202), spring (3) cup joint with second circular slot (202), just conical spring section of thick bamboo (4) cup joint with conical groove (203), silicone tube (6) cup joint in conical spring section of thick bamboo (4), just third circular slot (501) have been seted up to the one end of sleeve pipe (5), sleeve pipe (5) other end intercommunication third circular slot (501) have seted up fourth circular slot (502), sleeve pipe (5) cup joint with first circular slot (201), just silicone tube (6) part and fourth circular slot (502) cup joint, sampling tube (1) one end passes third circular slot (501), cup joints with silicone tube (6) after fourth circular slot (502).

2. The thermal desorption instrument sampling tube according to claim 1, wherein the outer wall of the conical spring tube (4) is frustum-shaped, a circular hole penetrates through the middle part of the conical spring tube, the outer conical surface of the conical spring tube (4) is jointed and sleeved with the conical groove (203), and the circular hole in the middle part is jointed and sleeved with the outer wall of the silicone tube (6).

3. The thermal desorption instrument sampling tube according to the claim 2, wherein the cutting grooves of the conical spring cylinder (4) are staggered, so that the side wall of the conical spring cylinder (4) is in a wave-shaped superposition.

4. The sampling tube of the thermal desorption instrument according to claim 1, wherein a plug (204) is fixedly connected to the cap (2) in the second circular groove (202), and one end of the silicone tube (6) is in sealing and fixed sleeve connection with the plug (204).

5. The thermal desorption instrument sampling tube according to claim 4, wherein the spring (3) is a compression spring, and the spring (3) is provided with a pre-pressure: two ends of the spring (3) respectively prop against the cover cap (2) and the conical spring barrel (4).

6. The thermal desorption instrument sampling tube according to claim 1, wherein the cap (2), the spring (3), the conical spring cylinder (4), the sleeve (5), the silicone tube (6) and the sampling tube (1) are coaxially arranged.