CN213689500U - Connecting device for chromatographic column assembling column - Google Patents
Connecting device for chromatographic column assembling column Download PDFInfo
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- CN213689500U CN213689500U CN202022692494.8U CN202022692494U CN213689500U CN 213689500 U CN213689500 U CN 213689500U CN 202022692494 U CN202022692494 U CN 202022692494U CN 213689500 U CN213689500 U CN 213689500U
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- pressing cap
- connecting pipe
- chromatographic column
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Abstract
A connecting device for chromatographic column is composed of a column connecting pressing cap with a through center, a sealing washer, a pipeline connecting seat, a connecting pipe edge ring and a connecting pipe pressing cap; a groove is arranged at one end of the pipeline connecting seat, which is contacted with the column connecting pressing cap, and a sealing gasket is arranged in the groove; the end of the pipeline connecting seat, which is contacted with the connecting pipe pressing cap, is provided with a chute, and a connecting pipe edge ring is matched in the chute; and the two ends of the pipeline connecting seat are provided with external threads and are respectively in spiral connection with the column connecting pressing cap provided with the internal threads and the connecting pipe pressing cap provided with the internal threads. The beneficial effects of the utility model are that, this connecting device can conveniently not harm the dismantlement, used repeatedly, and especially the seal ring that can protect joint department does not lead to the fact the damage because of frequent dismantlement, and the chromatographic column of the chromatographic column pipe that connecting elements of different pitch sizes can also be changed in order to adapt to different producers produces loads the needs.
Description
Technical Field
The utility model relates to a connecting device for chromatographic column dress post.
Background
The packing of high performance liquid chromatographic column packing with grain size below 10 micron is carried out by pressing the chromatographic packing in homogenizing tube (tank) into the chromatographic column under high pressure (10 MPa) to form compact packing bed layer, so as to ensure excellent chromatographic separation performance of the chromatographic column. The analytical and semi-preparative high performance liquid chromatography column is generally filled by a constant pressure wet method (homogenization method), and the filling device comprises: high pressure pumps, homogenizing tubes (tanks), pre-columns, chromatography columns, pressure gauges, fittings, piping, support frames, control systems, and the like. Different column-mounting device designs have various characteristics, for example, CN200910011820.X discloses a liquid chromatography column-mounting device, which is characterized in that a homogenate tank is fixed on a hollow bedplate, the bedplate is supported by a tripod support frame, and the support frame can be extended and adjusted in height; the chromatographic column is connected under the bedplate, and the chromatographic column and the connecting piece are safely protected by the column-mounting protection frame and the protection plate to prevent falling off under the action of high pressure. The system is simple to operate, safe and reliable, and can adapt to the filling of chromatographic columns with different lengths and specifications. CN201120258207.0 discloses a "column packing device for liquid chromatograph", which is characterized in that three fixing nuts are used to sequentially connect a column joint, a pre-column tube, a column connector and a chromatographic column tube, and the connection can be performed by packing the chromatographic column tube through the pre-column tube or pushing out the packing in the column tube through the pre-column tube. The device is a self-designed accessory of a column mounting machine, and meets the requirement of self-column mounting in a laboratory. CN201320295010.3 discloses "a device for filling liquid chromatography column", which is characterized in that a plurality of chromatographic columns can be filled at one time through a component (provided with a plurality of column tube connecting ports) connected with a pressure cap. CN 201320503871.6 discloses "a pneumatic pump box of a liquid chromatography column packing system and a liquid chromatography column packing system", which is characterized in that the system is installed in a pneumatic booster pump box instead of being fixed on a laboratory table or a laboratory table, and the pneumatic booster pump box can be moved conveniently as required to pack the column. CN 201410258961.2 discloses a method for filling a high-temperature liquid chromatographic column with fine-particle-size filler and a special device thereof, which is characterized in that a solvent heater is additionally arranged on a pipeline in front of a homogenizing tank, the temperature of a poured solvent is increased to reduce the viscosity, and then the filling pressure of the chromatographic column is reduced. CN201420207732.3 discloses a "portable movable chromatogram dress post machine", this dress post machine characteristics adopt the gas to drive the booster pump and replace electric mould press as the power of filling pressure, can realize multiple pressure filling, the device demand of different flow, pressure is adjustable in certain limit, the boost is fast, the back pressure is little, the packed bed height is adjustable, volume weight reduces simultaneously, simple structure is portable. CN201520178361.5 discloses "be used for narrow footpath chromatographic column to pack super high pressure equipment post equipment", this equipment characteristics adopt super high pressure constant pressure pump and high pressure resistant pipeline to carry out the dress post, and the highest pressure reaches 18000psi, and the flow is accurate adjustable, and the liquid stream is more stable, and pressure is adjustable within a certain range, can pack 2 ~ 3 chromatographic columns simultaneously, and the suitability is wider. CN201822136363.4 discloses a "chromatographic column hydraulic pressure mounting column device", which uses hydraulic drive instead of driving a downward pressing piston rod and a communicated screw rod to press a column downward, and can provide a pressure greater than that of original control by using a hydraulic control device column, thereby avoiding the phenomenon of blocking when the air pressure changes. Meanwhile, the column mounting process is relatively uniform, the column mounting work stability is high, and the column mounting method is safe and reliable. CN201920439091.7 discloses "electronic dress post device", the device comprises servo motor, flexible electric jar, frame, pressure sensor, crossbeam, connecting plate, person in charge, flange, change over switch, scram switch, debugging knob etc. and it features uses the PLC controller to control the servo motor action, drives flexible electric jar and carries out the post dress, output constant pressure, and the dress post effect is unanimous, is fit for the dress post demand of various column pipe specifications. CN201922436017.2 discloses "a superhigh pressure chromatographic column dress post device", the device characteristics are that drive the bracing piece with two sets of gears and reciprocate and adjust chromatographic column cylinder and place the board height, can press from both sides the chromatographic column firmly with two fixation clamp cooperations. The position displacement of the column, the column loading and the column removal are controlled electrically. The device main part both ends are equipped with the buffer board, and the protection dress post device avoids the collision impaired. These devices are designed to provide us with a choice of different needs.
The column filling of the small-particle-size chromatographic packing needs high-pressure filling, and the sealing requirement of the whole structure is high. The connection structure design of the high-pressure column filling machine on the market at present has defects, which cause the following problems after the chromatographic column is filled: firstly, the joint is sealed by a gasket, and after the column is installed at high pressure, the gasket is easy to compact and adhere to the inside of the thread of the column joint and is difficult to take out completely; secondly, the digging washer is frequently disassembled, so that the stud connector screw teeth are easily knocked and damaged; and thirdly, the gasket is easy to deform under high pressure to reduce the caliber, so that filler filling at a blocking part of the column cap gasket is not compact when the gasket is repeatedly used, and the chromatographic separation performance is influenced. These problems have not been solved by patent or research reports.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a connecting device for chromatographic column dress post, the device be split type dress post connection structure, both can make dress post connection structure tight real sealed, can conveniently dismantle again, is difficult for causing seal ring and thread part to damage moreover.
The utility model is realized in such a way that the connecting device for the chromatographic column assembling column consists of a column connecting pressing cap with a through center, a sealing washer, a pipeline connecting seat, a connecting pipe edge ring and a connecting pipe pressing cap; a groove is arranged at one end of the pipeline connecting seat, which is contacted with the column connecting pressing cap, and a sealing gasket is arranged in the groove; the end of the pipeline connecting seat, which is contacted with the connecting pipe pressing cap, is provided with a chute, and a connecting pipe edge ring is matched in the chute; and the two ends of the pipeline connecting seat are provided with external threads and are respectively in spiral connection with the column connecting pressing cap provided with the internal threads and the connecting pipe pressing cap provided with the internal threads.
The beneficial effects of the utility model are that, this connecting device can conveniently not harm the dismantlement, used repeatedly, and especially the seal ring that can protect joint department does not lead to the fact the damage because of frequent dismantlement, and the chromatographic column of the chromatographic column pipe that connecting elements of different pitch sizes can also be changed in order to adapt to different producers produces loads the needs.
Drawings
Fig. 1 is a sectional view of the present invention.
In the figure: 1. the column is connected with a pressing cap; 2. a sealing gasket; 3. a pipe connecting seat; 4. connecting the pipe edge ring; 5. connecting the pipe pressing cap; 6. a chromatographic column; 7. and (4) connecting the pipes.
Detailed Description
The utility model relates to a connecting device for chromatographic column, as shown in figure 1, the connecting device is composed of a column connecting pressing cap 1 with a through center, a sealing washer 2, a pipeline connecting seat 3, a connecting pipe edge ring 4 and a connecting pipe pressing cap 5; a groove is arranged at one end of the pipeline connecting seat 3, which is contacted with the column connecting pressing cap 1, and a sealing gasket 2 is arranged in the groove; the end of the pipeline connecting seat 3, which is contacted with the connecting pipe pressing cap 5, is provided with a chute, and a connecting pipe edge ring 4 is matched in the chute; and outer threads are arranged at two ends of the pipeline connecting seat 3 and are respectively in spiral connection with the column connecting pressing cap 1 with the inner threads and the connecting pipe pressing cap 5 with the inner threads. The sealing washer 2 is made of a peek material, and the connecting pipe edge ring 4 is made of stainless steel or the peek material. Also indicated in fig. 1 are a chromatographic column 6, a connecting tube 7; the connecting pipe 7 is connected with the homogenate tank.
The utility model is suitable for a when high performance liquid chromatography column loads for the homogenate jar is connected and sealed with the chromatographic column. The filling joint sealing washer and the connecting screw thread can be protected, damage caused by frequent disassembly is avoided, and connecting components with different sizes can be replaced to adapt to the filling requirements of chromatographic column tubes produced by different manufacturers. The utility model has the characteristics of safety, convenience, reliability.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (1)
1. A connecting device for chromatographic column packing is characterized in that: the connecting device consists of a column connecting pressing cap with a through center, a sealing washer, a pipeline connecting seat, a connecting pipe edge ring and a connecting pipe pressing cap; a groove is arranged at one end of the pipeline connecting seat, which is contacted with the column connecting pressing cap, and a sealing gasket is arranged in the groove; the end of the pipeline connecting seat, which is contacted with the connecting pipe pressing cap, is provided with a chute, and a connecting pipe edge ring is matched in the chute; and the two ends of the pipeline connecting seat are provided with external threads and are respectively in spiral connection with the column connecting pressing cap provided with the internal threads and the connecting pipe pressing cap provided with the internal threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022692494.8U CN213689500U (en) | 2020-11-19 | 2020-11-19 | Connecting device for chromatographic column assembling column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022692494.8U CN213689500U (en) | 2020-11-19 | 2020-11-19 | Connecting device for chromatographic column assembling column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213689500U true CN213689500U (en) | 2021-07-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022692494.8U Active CN213689500U (en) | 2020-11-19 | 2020-11-19 | Connecting device for chromatographic column assembling column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213689500U (en) |
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2020
- 2020-11-19 CN CN202022692494.8U patent/CN213689500U/en active Active
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