CN215179960U

CN215179960U - High performance liquid chromatography column assembly

Info

Publication number: CN215179960U
Application number: CN202121312215.9U
Authority: CN
Inventors: 魏少勇; 禹飞乐; 刘柏华; 杨薇; 曾义建
Original assignee: Guangzhou Flm Scientific Instrument Co ltd
Current assignee: Guangzhou Flm Scientific Instrument Co ltd
Priority date: 2021-06-11
Filing date: 2021-06-11
Publication date: 2021-12-14
Anticipated expiration: 2031-06-11

Abstract

The utility model discloses a high performance liquid chromatography column assembly, which comprises a column tube, wherein the top of the column tube is provided with a pressing cap, the bottom of the pressing cap is provided with a holding tank, the holding tank is provided with a limiting assembly, the bottom of the pressing cap is close to a feed channel and is provided with a slot, a connecting rod is inserted on the slot, one end of the connecting rod is provided with a supporting column, one side of the top of the connecting rod is provided with a through hole, the tops of the four connecting rods are positioned above the through hole and are sleeved with a first sieve plate, and the bottom of the supporting column is sleeved with a second sieve plate; has the advantages that: the utility model discloses with being equipped with spacing subassembly, cup joint first sieve on the connecting rod, through the cooperation of spacing subassembly and slot, cup joint the second sieve on the support column again, through the cooperation of stopper and dog, realize the spacing fixed of first sieve and second sieve, first sieve and second sieve installation are dismantled conveniently, and the convenience is washd the sieve simultaneously, improves the efficiency of liquid chromatography column separation, and two sieves are favorable to the filtration to impurity.

Description

High performance liquid chromatography column assembly

Technical Field

The utility model relates to a technical field of chromatographic column specifically is a high performance liquid chromatography post subassembly.

Background

The liquid chromatograph consists of a high-pressure infusion pump, an injector, a chromatographic column, a detector and the like, wherein the chromatographic column is called the heart of the chromatograph, and the performance of the chromatographic column directly influences the separation and analysis detection effects of the whole chromatographic system.

Liquid chromatograph on the existing market usually includes the column casing, establishes at the sieve etc. at column casing both ends, but just filters impurity through a sieve, and the filter effect that produces is relatively poor, and in the use, if there is impurity in the testing sample, the sieve is blockked up easily by impurity and is leaded to the column pressure to rise down for a long time, and current liquid chromatographic column is difficult to the dismouting to the sieve, and then leads to wasing the difficulty, finally appears the column effect and reduces, for this reason the utility model provides a high performance liquid chromatographic column subassembly is used for solving above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high performance liquid chromatography column subassembly to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a high performance liquid chromatography column subassembly, includes the column casing, the top of column casing is provided with presses the cap, the top of pressing the cap is provided with feedstock channel, the both sides of pressing the cap all are provided with sweat-absorbing piece, the top of column casing is provided with the spacing ring, press the bottom of cap and seted up the holding tank, be provided with spacing subassembly on the holding tank, the bottom of pressing the cap is close to feedstock channel and has seted up the slot, it has the connecting rod to peg graft on the slot, the one end of connecting rod is provided with the support column, the through-hole has been seted up to top one side of connecting rod, four the top of connecting rod is located the top of through-hole and has cup jointed first sieve, the second sieve has been cup jointed to the bottom of support column.

Preferably, the bottom of the pressing cap is provided with an annular slot, and the limiting ring is in threaded connection with the annular slot.

Preferably, an annular groove is formed in the outer side of the top of the limiting ring, and a sealing ring is sleeved on the annular groove.

Preferably, spacing subassembly includes the guide bar, the sliding block has been cup jointed on the guide bar, be provided with the spring between sliding block and the holding tank, the sliding block runs through the through-hole and pegs graft on the connecting rod.

Preferably, both ends of the guide rod are welded on the pressing cap, the spring is sleeved on the guide rod, and the sliding block is of an L-shaped block structure.

Preferably, the connecting rod is "L" type rod structure, the connecting rod is provided with four, and four connecting rods are the circumference around the support column and distribute, laminate each other between the upper surface of first sieve and the bottom of pressing the cap

Preferably, the bottom of the support column is located above the second sieve plate and is provided with a limiting block, the bottom of the support column is spliced with a stop block, the stop block is of a T-shaped shaft structure, and the stop block is in internal and external threaded connection with the support column.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses with being equipped with spacing subassembly, cup joint first sieve on the connecting rod, cooperation through spacing subassembly and slot, realize the spacing fixed of first sieve, cup joint the second sieve on the support column again, through the cooperation of stopper and dog, realize the spacing fixed of second sieve, first sieve and second sieve installation are dismantled conveniently, the convenience is washd the sieve simultaneously, improve the efficiency of liquid chromatogram post separation, two sieves are favorable to the filtration to impurity, guarantee liquid chromatograph's testing result.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged schematic view of the structure of FIG. 1;

FIG. 3 is an exploded view of the connection between the column tube and the pressing cap of the present invention;

fig. 4 is an exploded view of the second screen deck connection of the present invention.

In the figure: a column tube 1; pressing the cap 2; an annular slot 21; a feed channel 22; a sweat absorbing block 23; a limit ring 3; an annular groove 31; a seal ring 32; a holding tank 4; a limiting component 5; a guide rod 51; a slider 52; a spring 53; a slot 6; a connecting rod 61; a support post 62; a through hole 63; a first screening deck 64; a second screen deck 7; a stopper 71; a stop 72.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 4, the present invention provides a technical solution: a high performance liquid chromatography column assembly comprises a column tube 1, a pressure cap 2 is arranged at the top of the column tube 1, an annular slot 21 is arranged at the bottom of the pressure cap 2, a limit ring 3 is welded at the top of the column tube 1, the limit ring 3 is in internal and external thread connection with the annular slot 21, an annular groove 31 is arranged at the outer side of the top of the limit ring 3, a seal ring 32 is sleeved on the annular groove 31, the seal ring 32 is sleeved on the annular groove 31, make 3 spiro union of spacing ring on annular slot 21 through revolving to press cap 2, realize the double-seal of threaded connection and sealing washer 32, the leakproofness has been improved greatly, do not receive external factor to influence, guarantee the efficiency of liquid chromatography column separation, feedstock channel 22 has been seted up at the top of pressing cap 2, the both sides of pressing cap 2 all bond and have sweat-absorbing piece 23, sweat-absorbing piece 23 reduces the pollution that the hand produced according to pressing cap 2, prevent to roll when pressing cap 2 stores simultaneously at will, thereby protect the subassembly of liquid chromatography column.

The bottom of the pressing cap 2 is provided with a holding tank 4, the holding tank 4 is provided with a limiting component 5, the limiting component 5 comprises a guide rod 51, two ends of the guide rod 51 are welded on the pressing cap 2, a sliding block 52 is sleeved on the guide rod 51, a spring 53 is fixedly connected between the sliding block 52 and the holding tank 4, the spring 53 is sleeved on the guide rod 51, the sliding block 52 is of an L-shaped block structure, the bottom of the pressing cap 2 is close to the feeding channel 22 and is provided with a slot 6, a connecting rod 61 is inserted on the slot 6, the connecting rod 61 is of an L-shaped rod structure, one end of the connecting rod 61 is welded with a supporting column 62, four connecting rods 61 are arranged, the four connecting rods 61 are circumferentially distributed around the supporting column 62, one side of the top of the connecting rod 61 is provided with a through hole 63, the sliding block 52 penetrates through the through hole 63 and is inserted on the connecting rod 61, the tops of the four connecting rods 61 are positioned above the through hole 63 and are sleeved with a first sieve plate 64, laminating each other between the upper surface of first sieve 64 and the bottom of pressing cap 2, second sieve 7 has been cup jointed to the bottom of support column 62, and the top that the bottom of support column 62 is located second sieve 7 and has welded stopper 71, and it has dog 72 to peg graft in the bottom of support column 62, and dog 72 is "T" type axle column structure, and interior external screw thread is connected between dog 72 and the support column 62.

The working principle is as follows: in practical use, the utility model sleeves the first sieve plate 64 on the connecting rod 61, holds the sliding block 52 to move to one side of the guiding rod 51, compresses the spring 53, inserts the top of the connecting rod 61 on the slot 6 to realize the left-right spacing of the connecting rod 61, loosens the sliding block 52 to insert the sliding block 52 on the through hole 63 of the connecting rod 61 under the elastic action of the spring 53 to realize the up-down spacing of the connecting rod 61, so that the first sieve plate 64 is positioned between the sliding block 52 and the bottom of the press cap 2 to realize the spacing fixation of the first sieve plate 64, sleeves the second sieve plate 7 on the supporting column 62, screws the stopper 72 to insert the bottom of the supporting column 62, realizes the fixation of the second sieve plate 7 between the stopper 71 and the stopper 72, sleeves the sealing ring 32 on the annular groove 31, screws the press cap 2 by pressing the sweat absorbing block 23 with fingers, and screws the limiting ring 3 on the column tube 1 in the annular slot 21 of the press cap 2, realize the fixed mounting between column tube 1 and the pressure cap 2, threaded connection and sealing washer 32's dual seal simultaneously, the leakproofness has been improved greatly, do not receive external factor to influence, guarantee the efficiency of liquid chromatogram column separation, when needs wash the sieve, hold sliding block 52 and remove to one side of guide bar 51, and make spring 53 compressed, and then break away from between sliding block 52 and the through-hole 63, take out connecting rod 61 from slot 6, realize the dismantlement of first sieve 64, make it to break away from the bottom of support column 62 through revolving wrong dog 72, realize the dismantlement of second sieve 7, thereby the convenience is washd the sieve, improve the efficiency of liquid chromatogram column separation, two sieves are favorable to the filtration to impurity, guarantee liquid chromatograph's testing result.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A high performance liquid chromatography column assembly comprising a column tube (1), characterized in that: the top of the column tube (1) is provided with a pressure cap (2), the top of the pressure cap (2) is provided with a feeding channel (22), sweat absorbing blocks (23) are arranged on two sides of the pressing cap (2), a limiting ring (3) is arranged at the top of the column tube (1), the bottom of the pressure cap (2) is provided with a holding groove (4), the holding groove (4) is provided with a limiting component (5), the bottom of the pressure cap (2) is close to the feeding channel (22) and is provided with a slot (6), a connecting rod (61) is inserted in the slot (6), one end of the connecting rod (61) is provided with a supporting column (62), through-hole (63) have been seted up to the top one side of connecting rod (61), four the top of connecting rod (61) is located the top of through-hole (63) and has cup jointed first sieve (64), second sieve (7) have been cup jointed to the bottom of support column (62).

2. A high performance liquid chromatography column assembly according to claim 1, wherein: the bottom of the pressing cap (2) is provided with an annular slot (21), and the limiting ring (3) is connected with the annular slot (21) through internal and external threads.

3. A high performance liquid chromatography column assembly according to claim 1, wherein: an annular groove (31) is formed in the outer side of the top of the limiting ring (3), and a sealing ring (32) is sleeved on the annular groove (31).

4. A high performance liquid chromatography column assembly according to claim 1, wherein: spacing subassembly (5) include guide bar (51), sliding block (52) have been cup jointed on guide bar (51), be provided with spring (53) between sliding block (52) and holding tank (4), sliding block (52) run through-hole (63) and peg graft on connecting rod (61).

5. A high performance liquid chromatography column assembly according to claim 4, wherein: the two ends of the guide rod (51) are welded on the pressing cap (2), the spring (53) is sleeved on the guide rod (51), and the sliding block (52) is of an L-shaped block structure.

6. A high performance liquid chromatography column assembly according to claim 1, wherein: connecting rod (61) are "L" type rod structure, connecting rod (61) are provided with four, and four connecting rods (61) are the circumference around support column (62) and distribute, laminate each other between the upper surface of first sieve (64) and the bottom of pressing cap (2).

7. A high performance liquid chromatography column assembly according to claim 1, wherein: the bottom of the support column (62) is located above the second sieve plate (7) and is provided with a limiting block (71), a stop block (72) is inserted into the bottom of the support column (62), the stop block (72) is of a T-shaped shaft-shaped structure, and the stop block (72) is in internal and external threaded connection with the support column (62).