CN217016680U - Sample cell connects locking structure soon - Google Patents
Sample cell connects locking structure soon Download PDFInfo
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- CN217016680U CN217016680U CN202122607494.8U CN202122607494U CN217016680U CN 217016680 U CN217016680 U CN 217016680U CN 202122607494 U CN202122607494 U CN 202122607494U CN 217016680 U CN217016680 U CN 217016680U
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Abstract
The utility model discloses a sample tube quick-connection locking structure which comprises a sample tube, an adsorption joint, a sealing sleeve and a nut, wherein an external threaded tube is integrally formed at the bottom of the adsorption joint, the top end of the sample tube penetrates through the external threaded tube and then is positioned in the adsorption joint, the sealing sleeve is sleeved on the sample tube and is positioned in the external threaded tube, the sealing sleeve is in a corrugated tube shape, the nut is in threaded connection with the bottom end of the external threaded tube, the bottom of the nut is fixedly connected with a bottom ring, the top of the bottom ring is abutted against the bottom of the external threaded tube, the top of the bottom ring is fixedly connected with an inner tube, the inner tube is positioned on the outer side of the sample tube, and the top of the inner tube is positioned in the external threaded tube; the utility model can accurately control the ascending distance of the inner pipe by utilizing the matching of the bottom ring and the external thread pipe, thereby ensuring that the sealing sleeve is properly extruded, avoiding the situation of over-tightening or over-loosening, having simple and rapid installation process and convenient use.
Description
Technical Field
The utility model relates to a physical adsorption instrument, in particular to a quick-connection locking structure for a sample tube.
Background
When a physical adsorption instrument is used for installing a sample tube, the sample tube needs to be sealed through soft sealing of a sealing ring, a metal nut is screwed down by using a wrench in the traditional method, and the sealing ring is extruded in the screwing process to realize sealing; in this process, due to the different forces of each operator, two undesirable situations may occur, 1: the excessive tightness can cause the extruded pipe opening of the sample pipe to generate cracks and air leakage; 2: the tightening is not tight enough and the sealing performance is poor, resulting in air leakage.
Therefore, a need exists for a sample tube quick-connection locking structure to achieve a quick sealing connection between a sample tube and an adsorption joint of a physical adsorption instrument.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a quick-connection locking structure for a sample tube, which aims to solve the problems in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme:
the utility model provides a sample cell connects locking structure soon, includes sample cell, adsorption joint, seal cover, nut, the bottom integrated into one piece that adsorbs the joint has external screw thread pipe, the top of sample cell is located adsorption joint behind the external screw thread pipe, the seal cover cup joints on the sample cell, the seal cover is located external screw thread pipe, the seal cover is the bellows form, the bottom threaded connection of nut and external screw thread pipe, the bottom fixedly connected with bottom ring of nut, the top of bottom ring offsets with external screw thread pipe's bottom, the top fixedly connected with inner tube of bottom ring, the inner tube is located the outside of sample cell, the top of inner tube is located external screw thread pipe, the top of inner tube is provided with the packing ring, the packing ring closely laminates with the bottom of seal cover.
As a further scheme of the utility model: the seal cover comprises a plurality of annular rubber sheets, a first connecting ring and a second connecting ring, the first connecting ring is connected with the outer walls of the circumferences of the two corresponding annular rubber sheets, the second connecting ring is connected with the inner walls of the circumferences of the two corresponding annular rubber sheets, and the annular rubber sheets, the first connecting ring and the second connecting ring are of an integrally formed structure.
As a further scheme of the utility model: the thicknesses of the first connecting ring and the second connecting ring are smaller than that of the annular rubber sheet.
As a still further scheme of the utility model: the top end of the inner wall of the outer threaded pipe is provided with a taper opening, a conical sleeve is arranged in the taper opening, the conical sleeve is movably sleeved on the sample tube, and the top of the sealing sleeve is attached to the bottom of the conical sleeve.
Compared with the prior art, the utility model has the beneficial effects that:
1. the utility model can accurately control the ascending distance of the inner pipe by utilizing the matching of the bottom ring and the external thread pipe, thereby ensuring that the sealing sleeve is properly extruded, avoiding the situation of over-tightening or over-loosening, having simple and rapid installation process and convenient use.
2. According to the utility model, after the sealing sleeve is extruded, the first connecting rings and the second connecting rings can generate larger deformation, so that the inner diameter of the sealing sleeve is reduced, the outer diameter of the sealing sleeve is increased, the plurality of first connecting rings on the sealing sleeve are tightly attached to the inner wall of the external thread pipe, and the inner wall of the second connecting ring is tightly attached to the outer wall of the sample pipe, so that multiple sealing is formed between the sample pipe and the external thread pipe, and the sealing effect of the sample pipe installation is effectively improved.
Drawings
Fig. 1 is a schematic structural diagram of a sample tube quick-connection locking structure.
Fig. 2 is a partially enlarged view of fig. 1.
Fig. 3 is an enlarged view of a portion a in fig. 2.
Fig. 4 is a cross-sectional view of a sealing sleeve in a sample tube quick-connection locking structure.
The device comprises a sample tube 1, an adsorption joint 2, an external thread tube 3, a conical opening 4, a conical sleeve 5, a sealing sleeve 6, an annular rubber sheet 7, a first connecting ring 8, a second connecting ring 9, a gasket 10, a nut 11, a bottom ring 12 and an inner tube 13.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects of the present invention more apparent, the present invention will be further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and do not limit the utility model.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It is to be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must be in a particular orientation, constructed or operated in a particular orientation, and is not to be construed as limiting the utility model.
Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
Referring to fig. 1 to 4, in the embodiment of the present invention, a sample tube quick-connection locking structure includes a sample tube 1, an adsorption joint 2, a sealing sleeve 6, and a nut 11, an external threaded tube 3 is integrally formed at the bottom of the adsorption joint 2, the top end of the sample tube 1 passes through the external threaded tube 3 and then is located in the adsorption joint 2, the sealing sleeve 6 is sleeved on the sample tube 1, the sealing sleeve 6 is located in the external threaded tube 3, the sealing sleeve 6 is in a corrugated tube shape, the nut 11 is in threaded connection with the bottom end of the external threaded tube 3, the bottom of the nut 11 is fixedly connected with a bottom ring 12, the top of the bottom ring 12 abuts against the bottom of the external threaded tube 3, the top of the bottom ring 12 is fixedly connected with an inner tube 13, the inner tube 13 is located outside the sample tube 1, the top end of the inner tube 13 is located in the external threaded tube 3, the top of the inner tube 13 is provided with a gasket 10, the gasket 10 is tightly attached to the bottom of the sealing sleeve 6.
The seal cover 6 comprises a plurality of annular rubber sheets 7, a first connecting ring 8 and a second connecting ring 9, the first connecting ring 8 is connected with the outer walls of the circumferences of the two corresponding annular rubber sheets 7, the second connecting ring 9 is connected with the inner walls of the circumferences of the two corresponding annular rubber sheets 7, and the annular rubber sheets 7, the first connecting ring 8 and the second connecting ring 9 are of an integrally formed structure.
The thicknesses of the first connecting ring 8 and the second connecting ring 9 are smaller than that of the annular rubber sheet 7.
When not being extruded, the sealing sleeve 6 consisting of a plurality of first connecting rings 8, second connecting rings 9 and annular rubber sheets 7 is approximately semicircular, the inner diameter of the sealing sleeve 6 is in clearance fit with the outer diameter of the sample tube 1, the outer diameter of the sealing sleeve 6 is in clearance fit with the inner diameter of the external threaded tube 3, so that the sealing sleeve 6 can be conveniently assembled and disassembled on the sample tube 1 and in the external threaded tube 3, after the sealing sleeve 6 is extruded, the first connecting rings 8 and the second connecting rings 9 can generate larger deformation to reduce the inner diameter and increase the outer diameter of the sealing sleeve 6, the first connecting rings 8 on the sealing sleeve 6 can be tightly attached to the inner wall of the external threaded tube 3, the inner wall of the second connecting rings 9 can be tightly attached to the outer wall of the sample tube 1, and multiple seals can be formed between the sample tube 1 and the external threaded tube 3, the sealing effect of the installation of the sample tube 1 is effectively improved.
The top end of the inner wall of the outer threaded pipe 3 is provided with a taper opening 4, a conical sleeve 5 is arranged in the taper opening 4, the conical sleeve 5 is movably sleeved on the sample pipe 1, and the top of the sealing sleeve 6 is attached to the bottom of the conical sleeve 5.
Through the setting of taper mouth 4, be convenient for with leading-in absorption joint 2 in the top of sample cell 1, through the setting of taper sleeve 5, can support the top of seal cover 6 to guarantee the sealed effect of seal cover 6.
The working principle of the utility model is as follows:
when the device is installed, a nut 11, a gasket 10, a sealing sleeve 6 and a conical sleeve 5 are sequentially sleeved on a sample tube 1 from bottom to top, the top end of the sample tube 1 is inserted into an adsorption joint 2, then the nut 11 is pushed upwards on the surface of the sample tube 1, the nut is connected with the bottom end of an external threaded tube 3 until the bottom of a bottom ring 12 abuts against the bottom end of the external threaded tube 3, in the process, an inner tube 13 pushes the gasket 10, the sealing sleeve 6 and the conical sleeve 5 upwards, so that the sealing sleeve 6 is extruded, the sealing sleeve 6 seals between the sample tube 1 and the external threaded tube 3, and the ascending distance of the inner tube 13 can be accurately controlled by matching the bottom ring 12 and the external threaded tube 3, so that the sealing sleeve 6 is properly extruded, the situation of over-tightening or over-loosening is avoided, the installation process is simple and rapid, and the use is convenient.
In the utility model, the sealing sleeve 6 consisting of a plurality of first connecting rings 8, second connecting rings 9 and annular rubber sheets 7 is approximately semicircular when not extruded, the inner diameter of the sealing sleeve 6 is in clearance fit with the outer diameter of the sample tube 1, and the outer diameter of the sealing sleeve 6 is in clearance fit with the inner diameter of the external threaded tube 3, so that the sealing sleeve 6 can be conveniently assembled and disassembled on the sample tube 1 and in the external threaded tube 3, when the sealing sleeve 6 is extruded, the first connecting rings 8 and the second connecting rings 9 can generate larger deformation to reduce the inner diameter and increase the outer diameter of the sealing sleeve 6, the first connecting rings 8 on the sealing sleeve 6 can be tightly attached to the inner wall of the external threaded tube 3, the inner wall of the second connecting rings 9 can be tightly attached to the outer wall of the sample tube 1, and multiple seals can be formed between the sample tube 1 and the external threaded tube 3, the sealing effect of the installation of the sample tube 1 is effectively improved.
Although the present invention 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 in the foregoing embodiments, or equivalents may be substituted for elements thereof.
Claims (4)
1. The utility model provides a sample cell connects locking structure soon which characterized in that: comprises a sample tube (1), an adsorption joint (2), a sealing sleeve (6) and a nut (11), wherein an external threaded tube (3) is integrally formed at the bottom of the adsorption joint (2), the top end of the sample tube (1) penetrates through the external threaded tube (3) and then is positioned in the adsorption joint (2), the sealing sleeve (6) is sleeved on the sample tube (1), the sealing sleeve (6) is positioned in the external threaded tube (3), the sealing sleeve (6) is in a corrugated tube shape, the nut (11) is in threaded connection with the bottom end of the external threaded tube (3), the bottom of the nut (11) is fixedly connected with a bottom ring (12), the top of the bottom ring (12) is abutted against the bottom of the external threaded tube (3), the top of the bottom ring (12) is fixedly connected with an inner tube (13), the inner tube (13) is positioned outside the sample tube (1), and the top end of the inner tube (13) is positioned in the external threaded tube (3), the top of the inner tube (13) is provided with a gasket (10), and the gasket (10) is tightly attached to the bottom of the sealing sleeve (6).
2. The quick-coupling locking structure for sample tubes according to claim 1, wherein: seal cover (6) include a plurality of annular sheet rubbers (7), first go-between (8), second go-between (9), the circumference wall connection of the annular sheet rubbers (7) of first go-between (8) and two correspondences, the circumference wall connection of the annular sheet rubbers (7) of second go-between (9) and two correspondences, annular sheet rubbers (7), first go-between (8), second go-between (9) are the integrated into one piece structure.
3. The quick-connect locking structure for sample tubes according to claim 2, wherein: the thicknesses of the first connecting ring (8) and the second connecting ring (9) are smaller than that of the annular rubber sheet (7).
4. The quick-coupling locking structure for sample tubes according to claim 1, wherein: the outer thread pipe is characterized in that a conical opening (4) is formed in the top end of the inner wall of the outer thread pipe (3), a conical sleeve (5) is arranged in the conical opening (4), the conical sleeve (5) is movably sleeved on the sample pipe (1), and the top of the sealing sleeve (6) is attached to the bottom of the conical sleeve (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122607494.8U CN217016680U (en) | 2021-10-28 | 2021-10-28 | Sample cell connects locking structure soon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122607494.8U CN217016680U (en) | 2021-10-28 | 2021-10-28 | Sample cell connects locking structure soon |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217016680U true CN217016680U (en) | 2022-07-22 |
Family
ID=82440153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122607494.8U Active CN217016680U (en) | 2021-10-28 | 2021-10-28 | Sample cell connects locking structure soon |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217016680U (en) |
-
2021
- 2021-10-28 CN CN202122607494.8U patent/CN217016680U/en active Active
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