CN215983629U - Test tube for nitrogen filling, oxygen isolation and drying - Google Patents
Test tube for nitrogen filling, oxygen isolation and drying Download PDFInfo
- Publication number
- CN215983629U CN215983629U CN202122334354.8U CN202122334354U CN215983629U CN 215983629 U CN215983629 U CN 215983629U CN 202122334354 U CN202122334354 U CN 202122334354U CN 215983629 U CN215983629 U CN 215983629U
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- CN
- China
- Prior art keywords
- test tube
- plug
- nitrogen
- air inlet
- oxygen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 238000001035 drying Methods 0.000 title claims abstract description 23
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 21
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 239000001301 oxygen Substances 0.000 title claims abstract description 20
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 20
- 238000002955 isolation Methods 0.000 title abstract description 8
- 238000007789 sealing Methods 0.000 claims abstract description 41
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 11
- 239000007789 gas Substances 0.000 claims description 9
- 235000015097 nutrients Nutrition 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000000284 extract Substances 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000010981 drying operation Methods 0.000 description 1
- 239000004459 forage Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000643 oven drying Methods 0.000 description 1
- 238000007586 pull-out test Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
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Abstract
The utility model discloses a test tube for nitrogen filling, oxygen isolation and drying, which comprises a test tube body and a test tube plug, wherein the test tube plug is plugged at the opening end of the test tube body, a plurality of sealing rings A are arranged between the periphery of the test tube plug and the inner wall of the test tube body, the test tube plug is provided with an air inlet and an air outlet, the air inlet and the air outlet both penetrate through the test tube plug, a cover body A and a cover body B are respectively arranged on the air inlet and the air outlet, a sealing plug and a stepped hole are arranged in the air outlet, one end of the sealing plug is tightly attached to one end of the stepped hole, the other end of the sealing plug is connected with the cover body B through a spring, and the cover body B is provided with a plurality of air holes. According to the utility model, the air inlet and the air outlet are arranged on the test tube plug, nitrogen is filled into the test tube body before the sample is dried, oxygen is exhausted and then dried, so that the purposes of filling nitrogen and isolating oxygen for drying are achieved, the drying can be carried out in a common oven, the requirement of oxygen isolation for drying on equipment is reduced, the test cost is reduced, the difficulty of sample conveying of workers is reduced, and the use is convenient.
Description
Technical Field
The utility model belongs to the field of laboratory utensils, and particularly relates to a test tube for nitrogen filling, oxygen isolation and drying.
Background
In a livestock related laboratory, when the content of nutrient substances of forage grass and other feeds is measured, in order to prevent the nutrient substances from reacting with oxygen in the air in the drying process, oxygen is often required to be isolated for heating, the current common method comprises two modes of vacuum drying and nitrogen-filled oven drying, the two modes both need to adopt a special oven, the use cost is high, the common laboratory cannot be popularized and can only be equipped in some large laboratories, a pasture is mostly in a remote area, a worker needs to rush back and forth to send samples during the test to influence the test, and therefore a test tube for nitrogen-filled and oxygen-insulated drying is needed, the nitrogen-filled and oxygen-insulated drying operation of the samples can be carried out in the common oven, and the flexibility of the test is improved.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a test tube for nitrogen filling, oxygen isolation and drying, which can solve the problem of inconvenient use in the prior art.
The utility model is realized by the following technical scheme.
The utility model provides a test tube for nitrogen filling, oxygen isolation and drying, which comprises a test tube body and a test tube plug, wherein the test tube plug is plugged at the opening end of the test tube body, a plurality of sealing rings A are arranged between the periphery of the test tube plug and the inner wall of the test tube body, the test tube plug is provided with an air inlet and an air outlet, the air inlet and the air outlet both penetrate through the test tube plug, a cover body A and a cover body B are respectively arranged on the air inlet and the air outlet, a sealing plug and a stepped hole are arranged in the air outlet, one end of the sealing plug is tightly attached to one end of the stepped hole, the other end of the sealing plug is connected with the cover body B through a spring, and the cover body B is provided with a plurality of air holes.
Still include the intake pipe, intake pipe one end is inserted into test tube body from the air inlet to extend to test tube body bottom, the intake pipe other end is connected with the nitrogen gas source.
And a sealing ring B is arranged between the outer wall of the air inlet pipe and the inner wall of the air inlet.
The upper portion of the test tube body is sleeved with a fixing ring, and the fixing ring is connected with the test tube plug through a connecting piece.
One side of the test tube plug is provided with a shifting sheet, and one side of the shifting sheet is fixedly connected with the test tube plug.
The cover body B is connected with the exhaust port through threads.
The lower part of the sealing plug is arc-shaped, the diameter of the sealing plug is larger than the inner diameter of the stepped hole, and the diameter of the sealing plug is smaller than the inner diameter of the exhaust port.
The utility model has the beneficial effects that: through set up air inlet and gas vent on the test tube plug, dry at the sample and go to and fill into nitrogen gas in the test tube body, dry after discharging oxygen, reach and fill nitrogen and separate the purpose that oxygen was dried, can go on in ordinary oven during the stoving, the requirement of the oxygen stoving of separating of reduction to equipment reduces test cost, alleviates the degree of difficulty that the staff sent a kind, facilitates the use.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure of a test tube plug;
in the figure: the test tube comprises a test tube body 1, a test tube plug 2, a sealing ring A3, an air inlet 4, an air outlet 5, a cover body A6, a cover body B7, a sealing plug 8, a stepped hole 9, an air inlet pipe 10, a sealing ring B11, a sealing ring B12, a fixing ring 13, a connecting sheet 14 and a shifting sheet 14.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
As shown in fig. 1 and 2, a test tube for nitrogen filling, oxygen isolation and drying, includes a test tube body 1 and a test tube plug 2, the test tube plug 2 is plugged at the open end of the test tube body 1, a plurality of sealing rings A3 are arranged between the periphery of the test tube plug 2 and the inner wall of the test tube body 1, an air inlet 4 and an air outlet 5 are arranged on the test tube plug 2, the air inlet 4 and the air outlet 5 all run through the test tube plug 2, a cover body a6 and a cover body B7 are respectively arranged on the air inlet 4 and the air outlet 5, a sealing plug 8 and a step hole 9 are arranged in the air outlet 5, one end of the sealing plug 8 is tightly attached to one end of the step hole 9, the other end of the sealing plug 8 is connected with the cover body B7 through a spring, and a plurality of air holes are arranged on the cover body B7.
Before drying, put the sample into test tube body 1, then fill in behind test tube stopper 2, unscrew lid A6, and insert intake pipe 10, unscrew lid B7 simultaneously, reduce the compressive capacity of spring, reduce the elasticity of spring, then let in nitrogen gas through intake pipe 10 in test tube body 1, nitrogen gas gets into test tube body 1 bottom through intake pipe 10, discharge unnecessary air from gas vent 5, thereby prevent oxygen in the air and nutrient substance reaction when drying, improve the test accuracy, after leading in nitrogen gas 5 minutes to test tube body 1, extract intake pipe 10 from air inlet 4, and twist lid A6, simultaneously appropriate screw up lid B7, make lid B7 compression spring, make lid B7 compress on the sealing plug on step hole 9 through elasticity, prevent that external air from getting into test tube body 1, put test tube body 1 into the oven and dry after drying, after the sample moisture in test tube body 1 evaporates, the sealed plug 8 that pushes up on top of opening from lid B7 discharges from the gas pocket on the test tube body B7 And the excessive pressure in the test tube body 1 is avoided. Through drying this test tube, can fill nitrogen in ordinary oven and separate oxygen stoving, the requirement to equipment is dried to the oxygen that separates of reduction, reduces test cost, alleviates the degree of difficulty that the staff sent a kind, facilitates the use.
Still include intake pipe 10, intake pipe 10 one end is inserted into test tube body 1 from air inlet 4 to extend to test tube body 1 bottom, the intake pipe 10 other end is connected with the nitrogen gas source, is convenient for let in nitrogen gas in test tube body 1 before experimental, thereby exhaust oxygen.
And a sealing ring B11 is arranged between the outer wall of the air inlet pipe 10 and the inner wall of the air inlet 4, so that the sealing property of the air inlet pipe 10 and the air inlet 4 is improved.
The cover of 1 upper portion of test tube body has solid fixed ring 12, gu fixed ring 12 is connected with test tube stopper 2 through connection piece 13 for can be connected with test tube body 1 after test tube stopper 2 extracts, avoid test tube stopper 2 to lose.
Test tube stopper 2 one side is equipped with plectrum 14, and plectrum 14 one side and test tube stopper 2 fixed connection are owing to be equipped with multichannel sealing washer A3 between test tube stopper 2 and the test tube body 1, and its damping is great, consequently can be convenient pull out test tube stopper 2 from test tube body 1 through plectrum 14, facilitate the use.
Lid B7 is connected with gas vent 5 through the screw thread, can adjust lid B7's position through rotatory lid B7, the decrement of control spring, and then the pressure between control sealing plug 8 and the step hole 9, reduce elasticity when aerifing, make things convenient for nitrogen gas to discharge, increase the elasticity of spring when drying, utilize sealing plug 8 to form the check valve, prevent that during the outside air from getting into test tube body 1, make the nitrogen gas in test tube body 1 again and can discharge.
The lower part of sealing plug 8 is the arc, and the diameter of sealing plug 8 is greater than the internal diameter of step hole 9, and the diameter of sealing plug 8 is less than the internal diameter of gas vent 5, laminating step hole 9 that curved bottom can be better, it is better to make sealing plug 8 seal, the diameter of sealing plug 8 is less than the internal diameter of gas vent 5, make behind the sealing plug 8 is backed down to nitrogen gas in the test tube body 1, can flow in the gap between sealing plug 8 and the gas vent 5 and discharge test tube body 1 outside.
Claims (7)
1. The utility model provides a test tube for filling nitrogen and separate oxygen stoving which characterized in that: the test tube comprises a test tube body (1) and a test tube plug (2), wherein the test tube plug (2) is plugged at the opening end of the test tube body (1), and a plurality of sealing rings A (3) are arranged between the periphery of the test tube plug (2) and the inner wall of the test tube body (1); the test tube plug (2) is provided with an air inlet (4) and an air outlet (5), the air inlet (4) and the air outlet (5) both penetrate through the test tube plug (2), and the air inlet (4) and the air outlet (5) are respectively provided with a cover body A (6) and a cover body B (7); be equipped with sealing plug (8) and step hole (9) in gas vent (5), sealing plug (8) one end is hugged closely at step hole (9) one end, and the sealing plug (8) other end passes through the spring to be connected with lid B (7), is equipped with a plurality of gas pockets on lid B (7).
2. The test tube for nitrogen-filled oxygen-insulated drying according to claim 1, characterized in that: still include intake pipe (10), during intake pipe (10) one end inserted test tube body (1) from air inlet (4) to extend to test tube body (1) bottom, intake pipe (10) other end is connected with the nitrogen gas source.
3. The test tube for nitrogen-filled oxygen-insulated drying according to claim 2, characterized in that: and a sealing ring B (11) is arranged between the outer wall of the air inlet pipe (10) and the inner wall of the air inlet (4).
4. The test tube for nitrogen-filled oxygen-insulated drying according to claim 1, characterized in that: the upper portion of the test tube body (1) is sleeved with a fixing ring (12), and the fixing ring (12) is connected with the test tube plug (2) through a connecting sheet (13).
5. The test tube for nitrogen-filled oxygen-insulated drying according to claim 1, characterized in that: one side of the test tube plug (2) is provided with a shifting sheet (14), and one side of the shifting sheet (14) is fixedly connected with the test tube plug (2).
6. The test tube for nitrogen-filled oxygen-insulated drying according to claim 1, characterized in that: the cover body B (7) is connected with the exhaust port (5) through threads.
7. The test tube for nitrogen-filled oxygen-insulated drying according to claim 1, characterized in that: the lower part of the sealing plug (8) is arc-shaped, the diameter of the sealing plug (8) is larger than the inner diameter of the stepped hole (9), and the diameter of the sealing plug (8) is smaller than the inner diameter of the exhaust port (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122334354.8U CN215983629U (en) | 2021-09-26 | 2021-09-26 | Test tube for nitrogen filling, oxygen isolation and drying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122334354.8U CN215983629U (en) | 2021-09-26 | 2021-09-26 | Test tube for nitrogen filling, oxygen isolation and drying |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215983629U true CN215983629U (en) | 2022-03-08 |
Family
ID=80509791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122334354.8U Expired - Fee Related CN215983629U (en) | 2021-09-26 | 2021-09-26 | Test tube for nitrogen filling, oxygen isolation and drying |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215983629U (en) |
-
2021
- 2021-09-26 CN CN202122334354.8U patent/CN215983629U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220308 |