CN213337026U - Nitrogen blowpipe and nitrogen blowpipe assembly - Google Patents
Nitrogen blowpipe and nitrogen blowpipe assembly Download PDFInfo
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- CN213337026U CN213337026U CN202022206165.8U CN202022206165U CN213337026U CN 213337026 U CN213337026 U CN 213337026U CN 202022206165 U CN202022206165 U CN 202022206165U CN 213337026 U CN213337026 U CN 213337026U
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Abstract
The utility model relates to a nitrogen blowpipe and nitrogen blowpipe subassembly. The nitrogen blowing pipe assembly comprises an outer pipe and a nitrogen blowing pipe, the outer pipe is sleeved outside the nitrogen blowing pipe, the upper end of the outer pipe is of an open structure, the lower end of the outer pipe is of a closed structure, and the bottom of the outer pipe is used for containing a heat transfer medium for heating the chromatographic bottle; the upper end of the nitrogen blowing pipe is provided with a solution inlet, and the lower end of the nitrogen blowing pipe is provided with a solution outlet; the solution outlet is used for being detachably connected with the bottle mouth of the chromatographic bottle, so that the bottle mouth of the chromatographic bottle is communicated with the solution outlet. Before nitrogen blowing, the nitrogen blowing pipe and the chromatographic bottle are detachably connected together, so that the nitrogen blowing pipe can blow nitrogen to a large-volume solution, and the nitrogen blowing efficiency is improved; after nitrogen blows, directly pull down the chromatogram bottle from the nitrogen blowpipe and carry out follow-up analysis can, need not shift the solution after blowing nitrogen again, not only avoided the solution can not receive the pollution, improved analysis efficiency moreover.
Description
Technical Field
The utility model relates to a nitrogen blowpipe and nitrogen blowpipe subassembly.
Background
A nitrogen blowing instrument is used in the chemical analysis pretreatment, wherein the nitrogen blowing instrument is mainly used for blowing high-purity nitrogen on the surface of a solution to obtain a small-volume concentrated solution; or blowing the solution to near dryness, and then re-dissolving the near-dry substance in the nitrogen blowing pipe by using a small-volume solvent. That is, in either case, a small volume of the solution obtained by blowing nitrogen needs to be transferred from the nitrogen blow tube, and in many cases, the small volume of the solution in the nitrogen blow tube is transferred to a chromatography bottle, and after further dilution, the solution is directly fed into a machine for sample injection.
The nitrogen blowing pipe used in the nitrogen blowing can be a test tube, and also can be a large-volume nitrogen blowing pipe with a contracted bottom, such as a nitrogen blowing pipe disclosed in the Chinese utility model patent with the granted publication number of CN 210638988U. However, to transfer the small volume of solution in the test tube or nitrogen blow tube into the chromatography bottle, a suction tube with a dropper is needed, which will increase the chance of contamination of the small volume of solution, affect the experimental results, and also affect the nitrogen blowing efficiency.
In order to solve the problems, in the prior art, the chromatographic bottle is directly used as a nitrogen blowing pipe, and a nitrogen blowing instrument directly blows nitrogen to the solution in the chromatographic bottle so as to avoid the transfer of the solution. However, in the actual analysis process, the volume of the solution to be subjected to nitrogen purging is generally larger than the capacity of the chromatography bottle, and therefore, the mode of using the chromatography bottle as a nitrogen purging tube is also limited.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a nitrogen blowing pipe to solve the technical problem that the solution in the large-volume nitrogen blowing pipe is easy to be polluted in the transfer process in the prior art; the utility model also aims to provide a nitrogen blows the pipe subassembly to solution bulky nitrogen blows intraductal solution and receives the technical problem that the pollution easily at the transfer process among the prior art.
In order to realize the purpose, the technical proposal of the nitrogen blowing pipe of the utility model is that:
the upper end of the nitrogen blowing pipe is provided with a solution inlet, and the lower end of the nitrogen blowing pipe is provided with a solution outlet;
the solution outlet is used for being detachably connected with the bottle mouth of the chromatographic bottle, so that the bottle mouth of the chromatographic bottle is communicated with the solution outlet.
The beneficial effects are that: before nitrogen blowing, the nitrogen blowing pipe and the chromatographic bottle are detachably connected together, so that the nitrogen blowing pipe can blow nitrogen to a large-volume solution, and the nitrogen blowing efficiency is improved; after nitrogen blows, directly pull down the chromatogram bottle from the nitrogen blowpipe and carry out follow-up analysis can, need not shift the solution after blowing nitrogen again, not only avoided the solution can not receive the pollution, improved analysis efficiency moreover.
Further, the solution outlet is provided with internal threads and is used for being in threaded connection with the bottle opening of the chromatographic bottle so as to realize the detachable connection of the solution outlet and the bottle opening.
The beneficial effects are that: by the design, the nitrogen bottle blowing device is beneficial to the disassembly and assembly of the nitrogen bottle blowing and the chromatographic bottle, and the nitrogen blowing efficiency of the solution is improved.
Furthermore, the lower end of the nitrogen blowing pipe is of a conical structure with a large upper part and a small lower part, and the solution outlet is formed by the downward protrusion of the bottom of the conical structure.
The beneficial effects are that: the design is beneficial to the solution in the nitrogen blow pipe to enter the chromatographic bottle.
Further, the taper of the taper structure is 45-50 degrees.
Furthermore, the upper end of the nitrogen blowing pipe is provided with a flanging which is turned outwards and is used for supporting the pipe edge at the upper end of the outer pipe.
The beneficial effects are that: by the design, the nitrogen blowing pipe is convenient to disassemble and assemble on the outer pipe.
Furthermore, the outer edge of the flanging is also provided with a bending part which is bent downwards, and the inner side of the bending part is used for being in limit fit with the outer peripheral surface of the outer pipe so as to prevent the nitrogen blow pipe from moving along the radial direction of the nitrogen blow pipe.
The beneficial effects are that: by the design, the nitrogen blowing pipe is prevented from moving along the radial direction of the nitrogen blowing pipe, and the stability of supporting the nitrogen blowing pipe on the outer pipe is ensured.
In order to achieve the above purpose, the technical scheme of the nitrogen blowing pipe component of the utility model is that:
the nitrogen blowing pipe assembly comprises an outer pipe and a nitrogen blowing pipe, the outer pipe is sleeved outside the nitrogen blowing pipe, the upper end of the outer pipe is of an open structure, the lower end of the outer pipe is of a closed structure, and the bottom of the outer pipe is used for containing a heat transfer medium for heating the chromatographic bottle;
the upper end of the nitrogen blowing pipe is provided with a solution inlet, and the lower end of the nitrogen blowing pipe is provided with a solution outlet;
the solution outlet is used for being detachably connected with the bottle mouth of the chromatographic bottle, so that the bottle mouth of the chromatographic bottle is communicated with the solution outlet.
The beneficial effects are that: before nitrogen blowing, the nitrogen blowing pipe and the chromatographic bottle are detachably connected together, so that the nitrogen blowing pipe can blow nitrogen to a large-volume solution, and the nitrogen blowing efficiency is improved; after nitrogen blows, directly pull down the chromatogram bottle from the nitrogen blowpipe and carry out follow-up analysis can, need not shift the solution after blowing nitrogen again, not only avoided the solution can not receive the pollution, improved analysis efficiency moreover. In addition, the outer pipe can play a certain protective role to the nitrogen blowpipe arranged in the outer pipe.
Further, the solution outlet is provided with internal threads and is used for being in threaded connection with the bottle opening of the chromatographic bottle so as to realize the detachable connection of the solution outlet and the bottle opening.
The beneficial effects are that: by the design, the nitrogen bottle blowing device is beneficial to the disassembly and assembly of the nitrogen bottle blowing and the chromatographic bottle, and the nitrogen blowing efficiency of the solution is improved.
Furthermore, the lower end of the nitrogen blowing pipe is of a conical structure with a large upper part and a small lower part, and the solution outlet is formed by the downward protrusion of the bottom of the conical structure.
The beneficial effects are that: the design is beneficial to the solution in the nitrogen blow pipe to enter the chromatographic bottle.
Further, the taper of the taper structure is 45-50 degrees.
Furthermore, the upper end of the nitrogen blowing pipe is provided with a flanging which is turned outwards and is used for supporting the pipe edge at the upper end of the outer pipe.
The beneficial effects are that: by the design, the nitrogen blowing pipe is convenient to disassemble and assemble on the outer pipe.
Furthermore, the outer edge of the flanging is also provided with a bending part which is bent downwards, and the inner side of the bending part is used for being in limit fit with the outer peripheral surface of the outer pipe so as to prevent the nitrogen blow pipe from moving along the radial direction of the nitrogen blow pipe.
The beneficial effects are that: by the design, the nitrogen blowing pipe is prevented from moving along the radial direction of the nitrogen blowing pipe, and the stability of supporting the nitrogen blowing pipe on the outer pipe is ensured.
Furthermore, a limiting partition plate is arranged on the inner wall of the outer pipe and is positioned between the outer pipe and the nitrogen blowing pipe so as to limit the nitrogen blowing pipe in the radial direction of the outer pipe; and/or a limiting baffle is positioned between the outer tube and the chromatographic bottle so as to limit the chromatographic bottle in the radial direction of the outer tube.
The beneficial effects are that: the limiting partition plate is used for limiting the nitrogen blow pipe and/or the chromatographic bottle so as to ensure the stability of the nitrogen blow pipe and the chromatographic bottle in the outer pipe.
Furthermore, the limiting partition plate is positioned between the outer tube and the bottle body of the chromatographic bottle, and the limiting partition plate is an annular plate.
The beneficial effects are that: the spacing baffle can stop the heat transfer medium in the upward direction while limiting the chromatographic bottle, so that the heat transfer medium is prevented from moving upward to pollute the bottle mouth of the chromatographic bottle.
Furthermore, the outer pipe and the nitrogen blowing pipe are both glass pipes.
Drawings
FIG. 1 is a schematic structural view of a nitrogen blow pipe assembly according to example 1 of the present invention before nitrogen is blown;
FIG. 2 is a schematic view showing a nitrogen-blown structure according to embodiment 1 of the nitrogen blowing tube assembly of the present invention;
FIG. 3 is a schematic view of the nitrogen lance tube of FIG. 1;
FIG. 4 is a schematic structural view of the tube of FIG. 1;
in the figure: 1-an outer tube; 2-nitrogen blowing pipe; 3-limiting partition board; 4-a heat transfer medium; 5-solution; 6-chromatography bottle; 7-a tapered structure; 8-flanging; 9-bending part; 10-a circular hole; 11-solution inlet; 12-a solution outlet; 13-a hemispherical structure; 14-media containment chamber.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.
It is noted that 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. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. Furthermore, the terms "upper" and "lower" are based on the orientation and positional relationship shown in the drawings and are only for convenience of description of the present invention, and do not indicate that the referred device or component must have a specific orientation, and thus, should not be construed as limiting the present invention.
The features and properties of the present invention are described in further detail below with reference to examples.
The utility model discloses embodiment 1 of nitrogen blow pipe subassembly:
as shown in fig. 1 and 3, the nitrogen blow pipe assembly comprises a nitrogen blow pipe 2 and an outer pipe 1, wherein the outer pipe 1 is sleeved outside the nitrogen blow pipe 2, the upper end of the outer pipe 1 is of an open structure, the lower end of the outer pipe 1 is of a closed structure, and the bottom of the outer pipe 1 is used for containing a heat transfer medium 4 for heating a chromatographic bottle 6, preferably, the heat transfer medium 4 is water; the inner diameter of the outer pipe 1 is larger than the outer diameter of the nitrogen blowing pipe 2, so that an annular cavity is enclosed between the outer pipe 1 and the nitrogen blowing pipe 2.
In this embodiment, the nitrogen lance 2 has a solution inlet 11 and a solution outlet 12, and the solution outlet 12 is detachably connected to the mouth of the chromatography bottle 6, so that the mouth of the chromatography bottle 6 is communicated with the solution outlet 12.
In this embodiment, solution outlet 12 has the internal thread, and the bottleneck of chromatogram bottle 6 has the external screw thread, and solution outlet 12 and the bottleneck threaded connection of chromatogram bottle 6 to realize solution outlet 12 and the bottleneck detachable connection of chromatogram bottle 6, design like this, the dismouting of the nitrogen bottle 2 of being convenient for and chromatogram bottle 6.
As shown in fig. 1 and 3, the nitrogen blowing pipe 2 has a larger inner diameter, so that not only can a large amount of solution 5 be stored for nitrogen blowing, but also the solvent steam generated in the nitrogen blowing process can be favorably overflowed outwards, and the nitrogen blowing efficiency is improved; the lower end of the nitrogen blow pipe 2 is a conical structure 7 with a large upper part and a small lower part, and the solution outlet 12 is formed by the downward protrusion of the bottom of the conical structure 7, so that the solution 5 in the nitrogen blow pipe 2 can enter the chromatographic bottle 6. Wherein the taper of the conical structure 7 is 45-50 degrees.
In the embodiment, the upper end of the nitrogen blowing pipe 2 is provided with a flanging 8 which is turned outwards, and the flanging 8 is supported on the pipe edge at the upper end of the outer pipe 1; wherein, turn-ups 8 are the loop configuration to guarantee the stability of nitrogen blowpipe 2 support on outer tube 1.
As shown in fig. 1 and 3, the outer edge of the flange 8 has a bent portion 9 bent downward, and the inner side of the bent portion 9 is in limit fit with the outer peripheral surface of the outer tube 1 to prevent the nitrogen blowing pipe 2 from moving in the radial direction thereof, so as to further ensure the stability of the support of the nitrogen blowing pipe 2 on the outer tube 1.
As shown in fig. 1 and 4, a limiting baffle 3 is arranged on the inner wall of the outer pipe 1; spacing baffle 3 is the annular plate to form round hole 10 on it, round hole 10 supplies the body of chromatogram bottle 6 to pass, so that spacing baffle 3 is in between the body of outer tube 1 and chromatogram bottle 6, and then realizes that spacing baffle 3 is to the radial ascending spacing of chromatogram bottle 6 in outer tube 1, guarantees the stability of chromatogram bottle 6 in outer tube 1. Wherein, the body lower part of chromatogram bottle 6 contacts with heat transfer medium 4, and the heat in the assurance heat transfer medium 4 can be transmitted the solution in chromatogram bottle 6.
In this embodiment, the sealing structure at the lower end of the outer tube 1 is a hemispherical structure 13, the hemispherical structure 13 and the limiting partition plate 3 enclose a medium accommodating cavity 14, the medium accommodating cavity 14 is used for storing a heat transfer medium 4, and the heat transfer medium 4 is used for heating the solution 5 in the chromatographic bottle 6, so that the nitrogen blowing efficiency is improved; the limiting partition plate 3 can stop the heat transfer medium 4 in the upward direction, so that the phenomenon that the heat transfer medium 4 in the medium accommodating cavity 14 moves upwards to pollute the bottle mouth of the chromatographic bottle 6 due to the shaking of the outer tube 1 is avoided.
In this embodiment, the outer tube 1 and the nitrogen blowing tube 2 are both glass tubes. In other embodiments, the outer tube and nitrogen lance may be made of other materials that do not react with the solution.
In the embodiment, the nitrogen blowing pipe 2 is integrally cylindrical, the inner diameter of the nitrogen blowing pipe is about 2cm, and the length of the nitrogen blowing pipe is 10-12 cm; the whole outer tube 1 is cylindrical, the inner diameter of the outer tube is 4-6cm, the length of the outer tube is 13-15cm, the limiting partition plate 3 is located 2-2.5cm above the bottom of the outer tube 1, the diameter of a circular hole 10 in the limiting partition plate 3 is about 1cm, and the aperture of the circular hole 10 is matched with the outer diameter of the chromatographic bottle 6.
When nitrogen is blown, the nitrogen blowing pipe 2 is taken out of the outer pipe 1, a certain volume of heat transfer medium 4 is added into the medium accommodating cavity 14 of the outer pipe 1, the heat transfer medium 4 does not exceed the limiting partition plate 3, and preferably, the distance between the liquid level of the heat transfer medium 4 and the limiting partition plate 3 is about 0.2 cm; then, firstly, connecting a clean and empty chromatographic bottle 6 to a solution outlet 12 of a nitrogen blowing pipe 2 through a bottle mouth thread, and then transferring a solution 5 needing nitrogen blowing into the nitrogen blowing pipe 2 and the chromatographic bottle 6 through a solution inlet 11, as shown in fig. 1, so that nitrogen blowing can be carried out on the solution 5 with large volume; then, the nitrogen lance 2 is placed on the rim of the outer tube 1 through the flange 8, while the body of the chromatographic flask 6 passes through the circular hole 10, and the lower part of the body of the chromatographic flask 6 is in contact with the heat transfer medium 4, as shown in fig. 1. Finally, the nitrogen blowing pipe 2 and the outer pipe 1 are put into a water bath device of a nitrogen blowing instrument together for nitrogen blowing. Wherein heat in the water bath device is transferred to the solution 5 in the chromatographic bottle 6 through the heat transfer medium 4 to heat the solution 5.
Because the water bath device is internally provided with the bracket, the nitrogen blowing pipe 2 and the outer pipe 1 can be ensured to be in a vertical state in the water bath device. Wherein, water bath device and support are prior art, and no longer repeated here.
After the solution 5 was purged to 0.5-1mL of nitrogen, the solution 5 was already fully within the chromatography vial 6, as shown in figure 2; afterwards, take out outer tube 1 and nitrogen blowpipe 2 from the water bath device together earlier, take out nitrogen blowpipe 2 from outer tube 1 again, take off chromatographic bottle 6 carry out subsequent analysis can, need not shift solution 5 after blowing nitrogen again, not only avoided solution 5 can not receive the pollution, improved analysis efficiency moreover.
The utility model discloses embodiment 2 of nitrogen blow pipe subassembly:
in example 1, the solution outlet 12 has an internal thread, the mouth of the chromatography bottle 6 has an external thread, and the solution outlet 12 is screwed with the mouth of the chromatography bottle 6, so that the solution outlet 12 is detachably connected with the mouth of the chromatography bottle. In this embodiment, the solution outlet and the bottleneck are through hose detachable connection, and specifically, a pot head of hose is established on the solution outlet and is fixed through the staple bolt, and another pot head of hose is established on the bottleneck and is fixed through the staple bolt.
The utility model discloses embodiment 3 of nitrogen blow pipe subassembly:
in embodiment 1, the lower end of the nitrogen blowing pipe 2 is a tapered structure 7 with a large upper part and a small lower part, and the solution outlet 12 is formed by the bottom of the tapered structure 7 protruding downward. In this embodiment, the bottom of the nitrogen blowing pipe is a flat bottom structure, and the solution outlet is formed by downward projection of the flat bottom structure.
The utility model discloses embodiment 4 of nitrogen blow pipe subassembly:
in the embodiment 1, the upper end of the nitrogen blowing pipe 2 is provided with a flange 8 which is turned outwards, and the flange 8 is supported on the pipe edge of the upper end of the outer pipe 1 so that the nitrogen blowing pipe is hung on the outer pipe. In this embodiment, the opening structure of the upper portion of the outer tube is a flaring structure, the upper end of the corresponding nitrogen blowing tube is a flaring structure, and the flaring structure of the outer tube is adapted to the flaring structure of the nitrogen blowing tube so as to be hung on the outer tube after the nitrogen blowing tube is loaded into the outer tube.
The utility model discloses embodiment 5 of nitrogen blow pipe subassembly:
in embodiment 1, the inner wall of the outer tube 1 is provided with a limiting partition plate 3, and the limiting partition plate 3 is located between the outer tube 1 and the chromatographic bottle 6 to limit the chromatographic bottle 6 in the radial direction of the outer tube 1. In this embodiment, on the basis that the inner wall of the outer tube is provided with the limiting partition plate, the limiting partition plate is positioned between the outer tube and the nitrogen blowing tube so as to limit the nitrogen blowing tube in the radial direction of the outer tube.
The utility model discloses embodiment 6 of nitrogen blow pipe subassembly:
in embodiment 1, the limiting partition plate 3 is an annular plate, and the limiting partition plate 3 can limit the chromatographic bottle 6 and block the heat transfer medium 4 in an upward direction, so as to prevent the heat transfer medium 4 from moving upward to contaminate the bottle mouth of the chromatographic bottle 6. In this embodiment, spacing baffle arc, spacing baffle are provided with a plurality ofly along the circumference interval of outer tube, and a plurality of spacing baffles are at the radial spacing chromatogram bottle of footpath of outer tube.
The embodiment of the nitrogen blow pipe of the present invention, the nitrogen blow pipe in this embodiment, is the same as the structure of the nitrogen blow pipe described in any one of embodiments 1 to 4 of the above-mentioned nitrogen blow pipe assembly, and is not described herein again.
It should be noted that, the nitrogen blowing pipe in this embodiment may directly perform nitrogen blowing, for example, a chromatography bottle is installed on the nitrogen blowing pipe, and then the nitrogen blowing pipe and the chromatography bottle are placed into a water bath device of the nitrogen blowing instrument together, so that nitrogen blowing may be performed.
The above description is only for the preferred embodiment of the present invention, and the present invention is not limited thereto, the protection scope of the present invention is defined by the claims, and all structural changes equivalent to the contents of the description and drawings of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A nitrogen blowing pipe, characterized in that,
the upper end of the water tank is provided with a solution inlet, and the lower end of the water tank is provided with a solution outlet;
the solution outlet is used for being detachably connected with the bottle mouth of the chromatographic bottle, so that the bottle mouth of the chromatographic bottle is communicated with the solution outlet.
2. The nitrogen lance defined in claim 1 wherein the solution outlet has internal threads and is adapted to be threadably connected to the mouth of a chromatography bottle to enable the solution outlet to be removably connected to the mouth of the bottle.
3. The nitrogen lance tube as set forth in claim 1 or 2, wherein the lower end of said nitrogen lance tube has a tapered structure with a large upper portion and a small lower portion, and said solution outlet is formed by a bottom portion of the tapered structure protruding downward.
4. The nitrogen lance tube as set forth in claim 3 wherein said conical configuration has a taper of 45 ° to 50 °.
5. The nitrogen blow pipe as set forth in claim 1 or 2, wherein said upper end of said nitrogen blow pipe is provided with a flange turned outward for being supported on a pipe rim at the upper end of the outer pipe.
6. The nitrogen lance tube as set forth in claim 5, wherein the outer periphery of said flange is further provided with a bent portion bent downward, an inner side of the bent portion being adapted to be in a restraining engagement with an outer peripheral surface of the outer tube to prevent the nitrogen lance tube from moving in a radial direction thereof.
7. The nitrogen blow pipe assembly is characterized by comprising an outer pipe and a nitrogen blow pipe, wherein the outer pipe is sleeved outside the nitrogen blow pipe, the upper end of the outer pipe is of an open structure, the lower end of the outer pipe is of a closed structure, the bottom of the outer pipe is used for containing a heat transfer medium for heating a chromatographic bottle, and the nitrogen blow pipe is as defined in any one of claims 1 to 6.
8. The nitrogen lance assembly of claim 7, wherein the inner wall of the outer tube is provided with a limiting baffle plate, the limiting baffle plate being positioned between the outer tube and the nitrogen lance tube to limit the nitrogen lance tube in a radial direction of the outer tube; and/or a limiting baffle is positioned between the outer tube and the chromatographic bottle so as to limit the chromatographic bottle in the radial direction of the outer tube.
9. The nitrogen blow tube assembly of claim 8, wherein the limiting barrier is between the outer tube and the body of the chromatography bottle, the limiting barrier being an annular plate.
10. The nitrogen lance assembly of claim 7, wherein the outer tube and the nitrogen lance tube are glass tubes.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022206165.8U CN213337026U (en) | 2020-09-30 | 2020-09-30 | Nitrogen blowpipe and nitrogen blowpipe assembly |
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| CN202022206165.8U CN213337026U (en) | 2020-09-30 | 2020-09-30 | Nitrogen blowpipe and nitrogen blowpipe assembly |
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| CN213337026U true CN213337026U (en) | 2021-06-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115993284A (en) * | 2023-03-24 | 2023-04-21 | 成都圣恩生物科技股份有限公司 | Nitrogen blowing instrument |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115993284A (en) * | 2023-03-24 | 2023-04-21 | 成都圣恩生物科技股份有限公司 | Nitrogen blowing instrument |
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