CN2090988U

CN2090988U - High-efficient liquid-phase chromatographic column

Info

Publication number: CN2090988U
Application number: CN 91210021
Authority: CN
Inventors: 孙思远; 董礼孚; 梁作成
Original assignee: Dalian Institute of Chemical Physics of CAS
Current assignee: Dalian Institute of Chemical Physics of CAS
Priority date: 1991-01-09
Filing date: 1991-01-09
Publication date: 1991-12-18

Abstract

The utility model relates to a high-efficient liquid-phase chromatographic column, composed of a column body, a fixed nut, a column joint, a connecting screw and a column end filter. The column end filter of the chromatographic column is composed of a distributing disk, a filter screen and a filter paper three layers. Due to using the filter of the structure, the chromatographic column can make flowing phases be uniformly distributed on a warp direction, have small resistance for the flowing phases and prevent a column bed from being earlier polluted, and the column has stable performance and long service life. Furthermore, apart from having a simple general structure, reliable connection, small dead volume and beautiful appearance, the chromatographic column has high efficiency, easy dismounting and cleaning and repeated use and is not easy to be blocked.

Description

High-efficient liquid-phase chromatographic column

The utility model relates to a kind of accessory of liquid chromatograph, specifically provides the chromatographic column that a kind of liquid chromatograph uses.

Chromatographic column is a vitals in chromatographic analyzer of liquid phase, imitates for improving post, outside not only should be noted that aspect selecting chromatographic column stuff and column packing technique, designs a chromatographic column rational in infrastructure, and it is reliable that it is connected, and dead volume is little also to be crucial.A kind of liquid-phase chromatographic column preferably is to be proposed by Britain Phase Seperation Co., and the chromatographic column structure of the said firm is simple, connect reliably, and dead volume is little.But because this chromatographic column is used the sintered stainless steel filter disc at styletable, its thickness is generally more than 1 millimeter, not only influenced that post is imitated but also very easily blocked, causes the post voltage rise height can't operate as normal.Chromatographic column also is disposable consumables simultaneously, can not reclaim repeated use.

The purpose of this utility model provides a kind of chromatographic column simple in structure, and it not only connects reliably, and dead volume is little, and has post and imitate highly, is difficult for stopping up, and demolition is cleaned and can be reclaimed use repeatedly easily.

The utility model is that the structure of existing procucts is improved, chromatographic column still comprises cylinder, cylinder two ends hold-down nut, be used to install the column joint of chromatographic column with solid nut binding, being installed in hold-down nut and column joint is built in the styletable filtrator of each column jecket mouth and is used to link several compositions such as chromatographic column pipeline connecting screw, it is characterized in that the styletable filtrator is by distribution plate, three layers of filter screen and filter paper superposition successively constitute, distribution plate places outermost layer, make the moving phase warp-wise distribution quickly and evenly that feeds chromatographic column, prevent that the moving phase lumped scour is to post bed center, cause the post bed to subside too early, be suitable for gradient elution, filter screen and filter paper are formed double filtration, and is little to the resistance of moving phase, and can prevent that the post bed is contaminated too early, prolong the serviceable life of chromatographic column.In addition because filter screen installs easily, blocked after, very easily cleaned with ultrasonic technique, can reclaim filling again after chromatographic column lost efficacy and use repeatedly, reduce cost of use.Further describe below by the structure of accompanying drawing the utility model chromatographic column.

Accompanying drawing 1 is the structural drawing of the utility model performance liquid chromatographic column, and accompanying drawing 2 is overlooked and front elevation for the styletable filtrator.Chromatographic column shown in the accompanying drawing 1,2 can be used as an example of the present utility model.Among the figure: 1, cylinder; 2, hold-down nut; 3, column joint; 4, styletable filtrator; 5, connecting screw; 6, distribution plate; 7, otch; 8, filter screen; 9, filter paper layer.

Form by cylinder 1, hold-down nut 2, column joint 3, styletable filtrator 4 and connecting screw 5 by Fig. 1 the utility model, the two ends of cylinder are connected with hold-down nut 2, column joint 3 and hold-down nut 2 are by being threaded, two post nose ends respectively are added with styletable filtrator 4 in the column joint 3, be screwed into connecting screw 5 then and be assembled into chromatographic column on column joint 3, connecting screw 5 is installed the whole chromatographic column in back and should be kept leakproofness good.Can be illustrated by Fig. 2, the styletable filtrator 4 in the utility model is by distribution plate 6, and filter screen 8 and filter paper layer 9 threes can be with footpath disk (thin layer) formation that overlaps successively, and so-called distribution plate 6 can be a disk that has an otch 7.For example distribution plate can become disk by the thick stainless steel substrates punching out of 0.1～0.3mm, becomes to be with radial otch 7 to make in its surface working with line cutting machine, and filter screen can be made by the stainless steel filtering net of grid＜3 μ, adds filter paper layer (being changed by 3～10 metafiltration paper) at last.

The chromatographic column that is mounted to by accompanying drawing 1,2 compare with existing chromatographic column remove have simple in structure, is connected reliably, dead volume is little, outside the external styling advantage attractive in appearance, the most outstanding is that post is imitated height, difficult obstruction, easy demolition are cleaned, can be reclaimed use repeatedly, and therefore the present product of the easy replacement of this chromatographic column is widely used in liquid phase with spectrometer.

Claims

1, a kind of liquid-phase chromatographic column, form by cylinder, hold-down nut, column joint, connecting screw and styletable filtrator, it is characterized in that the styletable filtrator is to be made of 9 three layers of distribution plate 6, filter screen 8 and filter paper superposition successively, so-called distribution plate can be a disk that has an otch 7.

2, according to the described chromatographic column of claim 1, it is thick to it is characterized in that distribution plate can be 0.1～0.3mm, the stainless steel disk of its surface band radial otch 7.

3,, but it is characterized in that the stainless steel filtering net of filter screen grid＜3 μ according to the described chromatographic column of claim 2.