CN202141703U - Liquid phase chromatographic column - Google Patents
Liquid phase chromatographic column Download PDFInfo
- Publication number
- CN202141703U CN202141703U CN201120208516U CN201120208516U CN202141703U CN 202141703 U CN202141703 U CN 202141703U CN 201120208516 U CN201120208516 U CN 201120208516U CN 201120208516 U CN201120208516 U CN 201120208516U CN 202141703 U CN202141703 U CN 202141703U
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- chromatographic column
- pressure cap
- groove
- joint
- column according
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Abstract
The utility model discloses a liquid phase chromatographic column. A ring of concave groove is arranged at the edge of a through hole of one inner side at which pressure caps at two ends are in threaded connection with a column pipe, a sealing gasket is arranged in the concave groove. The pressure caps are in reliably threaded connection with a joint through such structure, the pipe wall of the column pipe can be in close attachment to the sealing gasket in the concave groove, thereby improving the sealing of the liquid phase chromatographic column, and prolonging the service life of the liquid phase chromatographic column.
Description
Technical field
The utility model relates to separation, the analysis technical field of chemicals, relates in particular to a kind of liquid-phase chromatographic column.
Background technology
The phase chromatographic separation technology is to be used for effectively separating the blend sample with various ingredients, and core component is the liquid chromatography separating column.Its separation principle is; The blending ingredients sample is dissolved in a kind of moving phase, and moving phase flows through the chromatograph packing material that is seated in the chromatographic column with certain flow velocity under the condition of bigger pressure; Because chromatograph packing material is to the difference of the absorption affinity of different component; So different component will flow through chromatograph packing material with different flow rate, and detect time and each components contents that different component flows out chromatographic column in the detecting device of liquid chromatograph, thus the purpose that reaches separation, detects.Chromatographic column is general to adopt high-grade stainless steel to process.Sieve plate is sintered stainless steel or titanium alloy, and the aperture is 0.2～20um, in order to prevent the outflow of chromatograph packing material, prevents the Interference Detection effect.
Be that the joint location at two ends adopts bolt and the rigidly connected mode of nut usually in liquid-phase chromatographic column commonly used.This kind connected mode is rigid connection of utilizing between metal covering and the face; Therefore if the wearing and tearing not high or that joint possibly take place when daily replacing solid phase adsorption filler of the machining precision of joint will cause whole chromatographic column gas leakage leakage, thereby cause this chromatographic column to use.Therefore, be necessary existing liquid phase adsorption chromatography column is further improved, with the impermeability that realizes improving the chromatographic column two ends, prolong chromatographic column serviceable life, reduce the purpose of the cost of liquid chromatographic detection.
The utility model content
The purpose of utility model is to provide a kind of liquid-phase chromatographic column, its can realize improving the chromatographic column two ends impermeability, prolong chromatographic column serviceable life, reduce the cost of liquid chromatographic detection.
For realizing above-mentioned purpose, the utility model provides a kind of liquid-phase chromatographic column, comprising: the through hole edge of the medial surface that column jecket, pressure cap, joint, chromatograph packing material, sieve plate, said pressure cap and column jecket join is provided with a circle groove.
As the further improvement of the utility model, be provided with a sieve plate in the middle of the groove of said pressure cap.
As the further improvement of the utility model, the groove width of the groove of said pressure cap is greater than the wall thickness of the arbitrary end of column jecket end column jecket.
Further improvement as the utility model is provided with packing washer in the groove of pressure cap.
As the further improvement of the utility model, be provided with an annular projection portion near the end at said column jecket two ends, the maximum outside diameter of annular projection portion is greater than the aperture of the minimum of joint.
As the further improvement of the utility model, said joint has internal thread, and pressure cap has external thread, and both pitch equate.
As the further improvement of the utility model, the stroke of said joint internal thread is greater than the externally threaded stroke of pressure cap.
As the further improvement of the utility model, the external thread of said pressure cap and the internal thread of joint reliably are spirally connected, and the ring-type post jamb of column jecket closely contacts with packing washer in the pressure cap groove.
As the further improvement of the utility model, said packing washer is processed by teflon.
Compared with prior art, a kind of liquid-phase chromatographic column of the utility model, the through hole edge of the contacted side of pressure cap and column jecket are provided with a circle groove, are provided with a circle packing washer in the groove.After pressure cap and joint were spirally connected, the ring-type post jamb of column jecket closely contacted with packing washer in the pressure cap groove.Thereby improved the sealing of chromatographic column, prolonged chromatographic column serviceable life.
Description of drawings
Accompanying drawing is used to provide the further understanding to the utility model, is used to explain the utility model with each embodiment of the utility model, but does not constitute the restriction to the utility model.In the accompanying drawings:
The medial surface that Fig. 1 joins for a kind of liquid-phase chromatographic column pressure cap and column jecket is provided with one and encloses groove and the A-A cut-open view of packing washer is not installed.
The medial surface that Fig. 2 joins for a kind of liquid-phase chromatographic column pressure cap and column jecket is provided with one and encloses groove and the A-A cut-open view of a packing washer has been installed.
Embodiment
Describe below in conjunction with the preferred embodiment of accompanying drawing, should be appreciated that preferred embodiment described herein only is used for explanation and explains the utility model, and be not used in qualification the utility model the utility model.
A-A cut-open view referring to figs. 1 through a kind of liquid-phase chromatographic column in one embodiment of the utility model shown in 2.The chromatography separation principle is: be dissolved in when each component is through stationary phase in the moving phase (Mobile Phase); Because with the have an effect size, strong and weak different of (absorption, distribution, ion attraction, exclusion, affine) of stationary phase (Stationary Phase); The difference of hold-up time in stationary phase, thus successively from stationary phase, flow out.Liquid chromatography send out the incipient stage be with large diameter glass tube column under normal temperature and normal pressure with the liquid level difference transport flow mutually, claim " classical liquid phase chromatography ", the method inferior separating effect, length consuming time again.People have begun the method for research and utilization drive of high-pressure gas moving phase for this reason, claim again high performance liquid chromatography (High performance Liquid Chromatography, HPLC).Utilize this method carry out separation component efficient, fast, resolution is high, highly sensitive, so be called " MLC " again.Adopt the instrument of this kind technology just to be called " high performance liquid chromatograph ", its most important parts are exactly separating column.Separating column is generally processed by stainless steel; Inner wall smooth; Cavity is wherein filled out and can be filled various fillers (stationary phase); Utilize different fillers that different component is had the absorption of specificity property, distribution, ion attraction, exclusion, affine effect, (mainstream technology adopts suction-operated at present) makes the different component difference of the hold-up time in stationary phase, thereby successively from stationary phase, flows out.And detect various components through detecting device and be cut into branch and the time of flowing out separating column really, thereby reach the purpose of separations, detection.
In the present embodiment, a kind of liquid-phase chromatographic column, it comprises column jecket 3, pressure cap 1, joint 2, solid-phase adsorbent 6, sieve plate 8, two ends pressure cap 1 is provided with a circle groove 10 with through hole 7 edges of a medial surface of column jecket 3 bolts.Be provided with a sieve plate 8 in the middle of the groove 10 of pressure cap 1.The groove width 10a of the groove 10 of pressure cap 1 is greater than the wall thickness 3a of column jecket 3 arbitrary end end column jeckets.Be provided with a packing washer 4 in the groove 10 of pressure cap 1.Be provided with an annular projection portion 9 near the end at column jecket 3 two ends, the diameter of annular projection portion 9 is greater than the aperture of the minimum of joint 2.The stroke of joint 2 internal thread 2a is greater than the stroke of pressure cap 1 external thread 1a.The external thread 1a of pressure cap 1 and the internal thread 2a of joint 2 reliably are spirally connected, and the ring-type post jamb 3a of column jecket 2 and the groove of pressure cap 1 10 are chimeric and closely contact with packing washer 4.Packing washer 4 can (Poly Tetra Fluoro Ethylene PTFE) processes by teflon.Teflon just has good weatherability, can resist the corrosion of most of chemical substance, and have good resistance to ag(e)ing, is the ideal material of making the chromatographic column O-ring seal.
In this embodiment, the through hole edge of the contacted side of pressure cap and column jecket is provided with a circle groove.After pressure cap and joint were spirally connected, a packing washer that is provided with in the ring-type post jamb of column jecket and the pressure cap groove closely contacted, thereby had improved the sealing of liquid-phase chromatographic column, had prolonged the serviceable life of liquid-phase chromatographic column.
Work as understanding; Though this instructions is described according to embodiment; But be not that each embodiment only comprises an independently technical scheme, this narrating mode of instructions only is for clarity sake, and those skilled in the art should make instructions as a whole; Technical scheme among each embodiment also can form other embodiments that it will be appreciated by those skilled in the art that through appropriate combination.
The listed a series of detailed description of preceding text only is specifying to the feasibility embodiment of the utility model; They are not the protection domain in order to restriction the utility model, allly do not break away from equivalent embodiment or the change that the utility model skill spirit done and all should be included within the protection domain of the utility model.
Claims (9)
1. liquid-phase chromatographic column comprises: column jecket, pressure cap, joint, chromatograph packing material, sieve plate,
It is characterized in that the through hole edge of the medial surface that said pressure cap and column jecket join is provided with a circle groove.
2. chromatographic column according to claim 1 is characterized in that: be provided with a sieve plate in the middle of the groove of said pressure cap.
3. chromatographic column according to claim 1 is characterized in that: the groove width of the groove of said pressure cap is greater than the wall thickness of the arbitrary end of column jecket end column jecket.
4. chromatographic column according to claim 1 is characterized in that: be provided with packing washer in the groove of said pressure cap.
5. chromatographic column according to claim 1 is characterized in that: be provided with an annular projection portion near the end at said column jecket two ends, the maximum outside diameter of annular projection portion is greater than the aperture of the minimum of joint.
6. chromatographic column according to claim 1 is characterized in that said joint has internal thread, and pressure cap has external thread, and both pitch equate.
7. chromatographic column according to claim 1 is characterized in that: the stroke of said joint internal thread is greater than the externally threaded stroke of pressure cap.
8. chromatographic column according to claim 1 is characterized in that: the external thread of said pressure cap and the internal thread of joint reliably are spirally connected, and the ring-type post jamb of column jecket closely contacts with packing washer in the pressure cap groove.
9. chromatographic column according to claim 1 is characterized in that: said packing washer is processed by teflon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120208516U CN202141703U (en) | 2011-06-20 | 2011-06-20 | Liquid phase chromatographic column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120208516U CN202141703U (en) | 2011-06-20 | 2011-06-20 | Liquid phase chromatographic column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202141703U true CN202141703U (en) | 2012-02-08 |
Family
ID=45552758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120208516U Expired - Lifetime CN202141703U (en) | 2011-06-20 | 2011-06-20 | Liquid phase chromatographic column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202141703U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102841166A (en) * | 2011-06-20 | 2012-12-26 | 苏州赛分科技有限公司 | Liquid chromatographic column |
| CN103675170A (en) * | 2012-09-13 | 2014-03-26 | 道尼克斯索芙特隆公司 | Fluidic plug unit and connecting device |
-
2011
- 2011-06-20 CN CN201120208516U patent/CN202141703U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102841166A (en) * | 2011-06-20 | 2012-12-26 | 苏州赛分科技有限公司 | Liquid chromatographic column |
| CN103675170A (en) * | 2012-09-13 | 2014-03-26 | 道尼克斯索芙特隆公司 | Fluidic plug unit and connecting device |
| CN103675170B (en) * | 2012-09-13 | 2016-03-02 | 道尼克斯索芙特隆公司 | Liquid plug unit and bindiny mechanism |
| US9982820B2 (en) | 2012-09-13 | 2018-05-29 | Dionex Softron Gmbh | Fluidic plug unit and connecting device for liquid conducting components |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120208 |