CN216703431U - Solid-phase extraction small column with easily-replaced sealing plug - Google Patents
Solid-phase extraction small column with easily-replaced sealing plug Download PDFInfo
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- CN216703431U CN216703431U CN202220285605.XU CN202220285605U CN216703431U CN 216703431 U CN216703431 U CN 216703431U CN 202220285605 U CN202220285605 U CN 202220285605U CN 216703431 U CN216703431 U CN 216703431U
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- phase extraction
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Abstract
The utility model relates to the technical field of solid-phase extraction columns, and discloses a solid-phase extraction column with an easily-replaced sealing plug, which comprises a tube body, wherein the inner wall of the tube body is provided with the sealing plug, the top of the sealing plug is detachably connected with a vertical rod, the interior of the vertical rod and the interior of the sealing plug are vertically provided with a hard tube in a through manner, the bottom of the vertical rod is fixedly provided with a connecting rod, the top of the sealing plug is provided with a thread groove, and the connecting rod is in threaded connection with the thread groove; connecting rod threaded connection is in the thread groove, dismantlement and equipment that can relax between the two to be convenient for change the sealing plug of different specifications, it is more convenient to use, screws off old sealing plug and can change the sealing plug of renewal. The utility model has the advantages of novel design, simple structure, low cost and easy replacement of the sealing plug.
Description
Technical Field
The utility model relates to the technical field of solid-phase extraction small columns, in particular to a solid-phase extraction small column with a sealing plug easy to replace.
Background
The solid phase extraction column is a sample pretreatment device developed from a chromatographic column and used for extraction, separation and concentration, is mainly applied to sample pretreatment of target compounds in various foods, agricultural and livestock products, environmental samples and biological samples, and at present, the solid phase extraction technology is widely used in a plurality of national standards and industrial analysis standards.
However, in practical use, we have found that the conventional solid phase extraction column still has certain disadvantages, such as:
the traditional solid phase extraction column is inconvenient for replacing the sealing plug, and is troublesome to replace when the sealing plugs with different specifications need to be used;
based on this, we propose a solid phase extraction cartridge with easily replaceable sealing plug.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
Aiming at the defects of the prior art, the utility model provides the solid phase extraction column with the sealing plug easy to replace, and the solid phase extraction column has the advantage of being easy to replace the sealing plug.
(II) technical scheme
In order to realize the purpose of easily replacing the sealing plug, the utility model provides the following technical scheme: the utility model provides a solid-phase extraction pillar of easily changing sealing plug, includes the body, be provided with the sealing plug on the inner wall of body, the top of sealing plug can be dismantled and is connected with the montant, the vertical hard tube that link up in inside of montant and sealing plug is provided with, the bottom fixed mounting of montant has the connecting rod, the top of sealing plug is formed with the thread groove, connecting rod threaded connection is in the thread groove.
As a preferable technical scheme of the utility model, a conical sleeve is sleeved on the outer wall of the hard tube, and a conical groove coupled with the conical sleeve is formed at the bottom of the inner wall of the connecting rod.
As a preferable technical scheme of the utility model, the conical sleeve is made of elastic plastic materials.
As a preferable technical scheme of the utility model, the outer diameter of the conical sleeve is gradually reduced from bottom to top.
(III) advantageous effects
Compared with the prior art, the utility model provides the solid-phase extraction column with the sealing plug easy to replace, and the solid-phase extraction column has the following beneficial effects:
1. this solid phase extraction pillar of easily changing sealing plug, connecting rod threaded connection dismantle and assemble in the thread groove, that can relax between the two to be convenient for change the sealing plug of different specifications, it is more convenient to use, screws off old sealing plug and can change the sealing plug of renewing.
2. According to the solid-phase extraction columella which is easy to replace the sealing plug, when the sealing plug is gradually screwed on the connecting rod, the conical sleeve can be gradually pushed upwards to be clamped into the conical groove, and the conical sleeve is deformed under stress, so that the conical sleeve can be tightly bound on the hard tube and completely fills the conical groove, and the sealing property between the connecting rod and the hard tube is ensured;
after the conical sleeve is damaged after long-time use, the new conical sleeve is replaced.
Drawings
FIG. 1 is a cross-sectional view of the overall structure of the present invention;
FIG. 2 is a perspective view of the overall structure of the present invention;
fig. 3 is an elevational cross-sectional view of a portion of the closure plug of the present invention;
fig. 4 is an enlarged schematic view of a tapered sleeve portion of the present invention.
In the figure: 1. a vertical rod; 2. a connecting rod; 3. a hard tube; 4. a sealing plug; 5. a thread groove; 6. a conical sleeve; 7. a tapered groove; 8. a tube body.
Detailed Description
Example (b):
referring to fig. 1-4, a solid phase extraction column with easily replaced sealing plug comprises a tube body 8, a sealing plug 4 is arranged on the inner wall of the tube body 8, the top of the sealing plug 4 is detachably connected with a vertical rod 1, a hard tube 3 is vertically arranged inside the vertical rod 1 and the sealing plug 4 in a through manner, a connecting rod 2 is fixedly arranged at the bottom of the vertical rod 1, a thread groove 5 is formed at the top of the sealing plug 4, and the connecting rod 2 is in threaded connection with the thread groove 5;
the connecting rod 2 is in threaded connection with the thread groove 5, and the connecting rod and the thread groove can be easily disassembled and assembled, so that sealing plugs 4 with different specifications can be conveniently replaced, the use is more convenient, the old sealing plug 4 can be replaced by a new sealing plug 4 after being unscrewed, and the problem that the overall replacement cost of the sealing plug 4 is high is solved;
as shown in fig. 2, 3 and 4, a tapered sleeve 6 is sleeved on the outer wall of the hard tube 3, a tapered groove 7 coupled with the tapered sleeve 6 is formed at the bottom of the inner wall of the connecting rod 2, in this embodiment, the tapered sleeve 6 is made of elastic plastic, and the outer diameter of the tapered sleeve 6 is gradually reduced from bottom to top;
when the sealing plug 4 is gradually screwed on the connecting rod 2, the conical sleeve 6 can be gradually pushed upwards to be clamped into the conical groove 7, and the conical sleeve 6 deforms under stress, so that the conical sleeve can be tightly bound on the hard tube 3 and completely fills the conical groove 7, and the sealing property between the connecting rod 2 and the hard tube 3 is ensured;
after the conical sleeve 6 is damaged after being used for a long time, the conical sleeve 6 is replaced, and effective sealing between the connecting rod 2 and the hard tube 3 can be realized by using lower cost.
The working principle and the using process of the utility model are as follows:
the connecting rod 2 is in threaded connection with the thread groove 5, and the connecting rod and the thread groove can be easily disassembled and assembled, so that sealing plugs 4 of different specifications can be conveniently replaced, the use is more convenient, and the old sealing plug 4 can be replaced by a new sealing plug 4 after being unscrewed;
when the sealing plug 4 is gradually screwed on the connecting rod 2, the conical sleeve 6 can be gradually pushed upwards to be clamped into the conical groove 7, and the conical sleeve 6 deforms under stress, so that the conical sleeve can be tightly bound on the hard tube 3 and completely fills the conical groove 7, and the sealing property between the connecting rod 2 and the hard tube 3 is ensured;
after the conical sleeve 6 is damaged after long-time use, the conical sleeve 6 is replaced by a new conical sleeve 6.
Claims (4)
1. The utility model provides a solid-phase extraction pillar of be liable to change sealing plug, includes body (8), be provided with sealing plug (4) on the inner wall of body (8), the top of sealing plug (4) can be dismantled and be connected with montant (1), the vertical lining up in inside of montant (1) and sealing plug (4) is provided with hard tube (3), its characterized in that: the bottom fixed mounting of montant (1) has connecting rod (2), the top of sealing plug (4) is formed with thread groove (5), connecting rod (2) threaded connection is in thread groove (5).
2. The solid phase extraction cartridge with an easily replaceable sealing plug of claim 1, wherein: the outer wall cover of hard tube (3) is equipped with taper sleeve (6), the bottom of connecting rod (2) inner wall be formed with taper groove (7) that taper sleeve (6) are coupled mutually.
3. The solid phase extraction cartridge with an easily replaceable sealing plug of claim 2, wherein: the conical sleeve (6) is made of elastic plastic materials.
4. The solid phase extraction cartridge with an easily replaceable sealing plug of claim 2, wherein: the outer diameter of the conical sleeve (6) is gradually reduced from bottom to top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220285605.XU CN216703431U (en) | 2022-02-11 | 2022-02-11 | Solid-phase extraction small column with easily-replaced sealing plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220285605.XU CN216703431U (en) | 2022-02-11 | 2022-02-11 | Solid-phase extraction small column with easily-replaced sealing plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216703431U true CN216703431U (en) | 2022-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220285605.XU Active CN216703431U (en) | 2022-02-11 | 2022-02-11 | Solid-phase extraction small column with easily-replaced sealing plug |
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| CN (1) | CN216703431U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116585752A (en) * | 2023-07-18 | 2023-08-15 | 成都百泉生物医药科技有限公司 | Chromatographic column and oscillating device for chromatographic column |
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2022
- 2022-02-11 CN CN202220285605.XU patent/CN216703431U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116585752A (en) * | 2023-07-18 | 2023-08-15 | 成都百泉生物医药科技有限公司 | Chromatographic column and oscillating device for chromatographic column |
| CN116585752B (en) * | 2023-07-18 | 2023-10-20 | 成都百泉生物医药科技有限公司 | Chromatographic column and oscillating device for chromatographic column |
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