CN218646914U

CN218646914U - Ion chromatography suppressor with regeneration liquid channel capable of being switched in series-parallel connection mode

Info

Publication number: CN218646914U
Application number: CN202223033458.6U
Authority: CN
Inventors: 丁春铖; 赵言科; 李佳佳; 高鸿旭; 孙阳阳
Original assignee: QINGDAO SHENGHAN CHROMATOGRAPHY TECHNOLOGY CO LTD
Current assignee: QINGDAO SHENGHAN CHROMATOGRAPHY TECHNOLOGY CO LTD
Priority date: 2022-11-14
Filing date: 2022-11-14
Publication date: 2023-03-17
Anticipated expiration: 2032-11-14

Abstract

The utility model relates to an ion chromatography analysis technical field, concretely relates to but regeneration liquid passageway series-parallel connection switches's ion chromatography inhibitor, including first splint, intermediate lamella, second splint, first ion exchange membrane, second ion exchange membrane, first electrode and second electrode. In the utility model, the first parallel pipeline is arranged between the first inlet and the second inlet, and the second parallel pipeline is arranged between the third inlet and the fourth outlet, so that the switching between the parallel regeneration liquid channel and the serial regeneration liquid channel can be realized, the selection can be carried out according to different working conditions of actual use, and the applicability is strong; the situation that the internal pressure is large when the serial regeneration liquid channel is used can be conveniently switched and timely found and adjusted in the using process, the normal using process is not influenced, the potential damage to equipment is reduced, and the service life is long.

Description

Ion chromatography suppressor with regeneration liquid channel capable of being switched in series-parallel connection mode

Technical Field

The utility model relates to an ion chromatography analysis technical field, concretely relates to but regeneration liquid passageway series-parallel connection switches's ion chromatography inhibitor.

Background

In the technical field of ion chromatographic analysis, the suppressor plays a main role in reducing background conductivity of a mobile phase such as leacheate, increasing the conductivity value of detected ions, improving the signal-to-noise ratio and the like, and is one of key components in an ion chromatographic analysis instrument. The prior packed column suppressors, fiber suppressors and micro-membrane suppressors are experienced, and the suppressors combining membrane technology and electrochemical technology are more used at present. In the prior art, a regeneration liquid channel arranged on the suppressor is in a series connection mode or a parallel connection mode, and the series connection mode or the parallel connection mode has certain advantages and disadvantages in the actual use process. The regeneration liquid is respectively introduced into the two electrolysis chambers of the parallel regeneration liquid channel, and the parallel regeneration liquid channel has the advantages that the path of the parallel flow path is short, and the pressure is easy to control; however, the flow rate of the regeneration liquid in the electrolysis chambers on both sides is related to the pressure in each chamber, and the pressure difference between the electrolysis chambers on both sides is likely to cause the difference in the flow rate and flow rate of the regeneration liquid, thereby affecting the suppression efficiency. The tandem type regeneration liquid channel has the advantages that the consistency of the flow velocity and the flow of the regeneration liquid in the electrolysis chambers at two sides is better, and the inhibition efficiency is good; however, since the path of the regeneration liquid flow path is long, the gas in the flow path is likely to accumulate when the gas is not discharged in time, which causes a large internal pressure and a risk of liquid leakage. Therefore, the prior art needs further improvement based on the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a regeneration liquid passageway can be in series-parallel connection switching's ion chromatogram suppressor to solve the prior art problem that exists among the above-mentioned background art.

For solving the above technical problem, the utility model provides a technical scheme does: the ion chromatography suppressor with the regeneration liquid channel capable of being switched in series and parallel comprises a first clamping plate, a middle plate, a second clamping plate, a first ion exchange membrane, a second ion exchange membrane, a first electrode and a second electrode; the first clamping plate, the middle plate and the second clamping plate are tightly buckled in sequence, the first ion exchange membrane is tightly pressed between the first clamping plate and the middle plate, and the second ion exchange membrane is tightly pressed between the middle plate and the second clamping plate; a suppression chamber is formed between the first ion exchange membrane and the second ion exchange membrane, a first electrolysis chamber is formed between the inner side of the first clamping plate and the first ion exchange membrane, the first electrode is arranged in the first electrolysis chamber, a second electrolysis chamber is formed between the inner side of the second clamping plate and the second ion exchange membrane, and the second electrode is arranged in the second electrolysis chamber; the both ends of intermediate lamella are provided with the leacheate import and the leacheate export, be provided with first exit and exit with the second on the lateral wall on the first splint, it imports and exports and the fourth is imported and exported to be provided with the third on the lateral wall on the second splint, first import and export and the third import and export between through the first pipeline intercommunication that connects in parallel, the second is imported and exported and is imported and exported between through the second pipeline intercommunication in parallel, all be provided with control flap on first pipeline in parallel and the second pipeline in parallel.

On the basis of the technical scheme, a first pressing plate is arranged on the outer side of the first clamping plate, a second pressing plate is arranged on the outer side of the second clamping plate, and the first pressing plate, the first clamping plate, the middle plate, the second clamping plate and the second pressing plate are sequentially pressed through bolts.

On the basis of the technical scheme, a first groove is formed in the inner side of the first clamping plate, and a first electrolysis chamber is formed between the first groove and the first ion exchange membrane; the second splint inboard is provided with the flange, the inside second recess that is formed with of flange, form the second electrolysis chamber between second recess and the second ion exchange membrane.

On the basis of the technical scheme, one side of the middle plate, which is close to the second clamping plate, is provided with a third groove for positioning the second ion exchange membrane, and the flange is matched with the third groove.

On the basis of the technical scheme, the top end faces of the first groove and the second groove are provided with sealing lips for sealing and isolating.

On the basis of the technical scheme, the suppression chamber, the first electrolysis chamber and the second electrolysis chamber are filled with resin particles.

On the basis of the technical scheme, sieve plates are arranged at the first inlet, the second inlet and the second outlet of the first clamping plate, the eluent inlet and the eluent outlet of the middle plate, and the third inlet, the third outlet and the fourth inlet and the fourth outlet of the second clamping plate.

On the basis of the technical scheme, the outer sides of the eluent inlet and the eluent outlet are both provided with joint through pipes.

The utility model provides a beneficial effect that technical scheme produced lies in:

1. in the utility model, the first parallel pipeline is arranged between the first inlet and the first outlet, the third inlet and the third outlet, and the second parallel pipeline is arranged between the third inlet and the fourth outlet, so that the switching between the parallel regeneration liquid channel and the serial regeneration liquid channel can be realized, the selection can be carried out according to different working conditions of actual use, and the applicability is strong; the situation that the internal pressure is large when the serial regeneration liquid channel is used can be conveniently switched and timely found and adjusted in the using process, the normal using process is not influenced, the potential damage to equipment is reduced, and the service life is long.

2. Through setting up the seal lip, mainly play the sealing action to first ion exchange membrane and second ion exchange membrane, avoid appearing the problem influence suppression efficiency of string liquid or weeping between first electrolysis room, suppression room and the second electrolysis room.

3. By filling the resin particles, the two layers of ion exchange membranes can be supported, and the phenomena of collapse and swelling which influence incomplete inhibition reaction and further influence the peak appearance effect of a chromatogram are avoided; ion exchange can be carried out, so that the reaction is more sufficient and the inhibition is more complete.

4. The sieve plates are arranged on the liquid phase inlet and the liquid phase outlet, namely the inflow end and the outflow end of the liquid phase, so that resin particles can be effectively reserved in corresponding cavities, the function of the resin particles is better played, and the blocking of a liquid phase flow channel is avoided; meanwhile, the processing difficulty of the passage of the eluent inlet and the eluent outlet and the passage of the regeneration liquid inlet and the regeneration liquid outlet can be reduced.

Drawings

Fig. 1 is a perspective view of the present invention;

fig. 2 is an exploded view of the present invention;

fig. 3 is an internal cross-sectional view of the present invention;

fig. 4 is a schematic structural view of a first clamping plate of the present invention;

FIG. 5 is a schematic structural view of a middle plate of the present invention;

fig. 6 is a schematic structural view of a second splint according to the present invention;

Detailed Description

The invention will be further explained with reference to the following figures and examples:

in the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the description of the present invention, it is to be understood that the terms "left", "right", "front", "back", "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Example 1

As shown in fig. 1 to 6, the present invention provides an ion chromatography suppressor with a regenerant channel capable of being switched in series and parallel, comprising a first clamp plate 1, a middle plate 2, a second clamp plate 3, a first ion exchange membrane 4, a second ion exchange membrane 5, a first electrode 6 and a second electrode 7; the first clamping plate 1, the middle plate 2 and the second clamping plate 3 are tightly buckled in sequence, a first ion exchange membrane 4 is tightly pressed between the first clamping plate 1 and the middle plate 2, and a second ion exchange membrane 5 is tightly pressed between the middle plate 2 and the second clamping plate 3; a suppression chamber 8 is formed between the first ion exchange membrane 4 and the second ion exchange membrane 5, a first electrolysis chamber 9 is formed between the inner side of the first clamping plate 1 and the first ion exchange membrane 4, the first electrode 6 is arranged in the first electrolysis chamber 9, a second electrolysis chamber 10 is formed between the inner side of the second clamping plate 3 and the second ion exchange membrane 5, and the second electrode 7 is arranged in the second electrolysis chamber 10; the both ends of intermediate lamella 2 are provided with leacheate import 21 and leacheate export 22, be provided with first import and export 11 and second import and export 12 on the lateral wall on the first splint 1, be provided with third import and export 31 and fourth import and export 32 on the lateral wall on the second splint 3, first import and export 11 and third import and export 31 between through first parallel pipeline 13 intercommunication, the second import and export 12 and fourth import and export 32 between through the parallel pipeline 14 intercommunication of second, all be provided with control flap 15 on the parallel pipeline 14 of first parallel pipeline 13 and second. Preferably, titanium electrodes are used for the first electrode 6 and the second electrode 7.

It should be noted that the above-mentioned inner side of the first clamping plate 1 and the inner side of the second clamping plate 3 refer to the side of the first clamping plate 1 and the second clamping plate 3 close to the middle plate 2. Specifically, the first ion exchange membrane 4 and the second ion exchange membrane 5 divide the suppression chamber 8, the first electrolysis chamber 9 and the second electrolysis chamber 10 into three independent chambers; the first inlet and outlet 11 and the second inlet and outlet 12 arranged on the first clamping plate 1 are communicated with the first electrolysis chamber 9, and the third inlet and outlet 31 and the fourth inlet and outlet 32 arranged on the second clamping plate 3 are communicated with the second electrolysis chamber 10, i.e. a flow channel is provided for the regeneration liquid.

In the utility model, the first parallel pipeline 13 is arranged between the first inlet and outlet 11 and the third inlet and outlet 31, and the second parallel pipeline 14 is arranged between the third inlet and outlet 12 and the fourth inlet and outlet 32, so that the switching between the parallel and serial regenerated liquid channels can be realized, the regenerated liquid channels can be selected according to different working conditions of actual use, and the applicability is strong; the situation that the internal pressure is large when the serial regeneration liquid channel is used can be conveniently switched and timely found and adjusted in the using process, the normal using process is not influenced, the potential damage to equipment is reduced, and the service life is long.

On the basis of the technical scheme, a first pressing plate 16 is arranged on the outer side of the first clamping plate 1, a second pressing plate 17 is arranged on the outer side of the second clamping plate 3, and the first pressing plate 16, the first clamping plate 1, the middle plate 2, the second clamping plate 3 and the second pressing plate 17 are sequentially pressed through bolts. By providing the first pressing plate 16 and the second pressing plate 17 on the outer sides, the suppressor structure formed by the first clamping plate 1, the middle plate 2 and the second clamping plate 3 in a buckled manner can be more compact, and the sealing performance is better.

On the basis of the above technical solution, as shown in fig. 4 and 6, a first groove 18 is arranged on the inner side of the first clamping plate 1, and a first electrolysis chamber 9 is formed between the first groove 18 and the first ion exchange membrane 4; a flange 33 is arranged on the inner side of the second clamping plate 3, a second groove 34 is formed inside the flange 33, and a second electrolysis chamber 10 is formed between the second groove 34 and the second ion exchange membrane 5.

On the basis of the above technical solution, as shown in fig. 5, a third groove 23 for positioning the second ion exchange membrane 5 is provided at one side of the middle plate 2 close to the second clamping plate 3, and the flange 33 is adapted to the third groove 23. Through being provided with third recess 23 on intermediate lamella 2, conveniently fix a position and install second ion exchange membrane 5, simultaneously with the flange 33 looks adaptation that the 3 inboard of second splint set up, second splint 3 compresses tightly the back with intermediate lamella 2, flange 33 butt is fixed it on second ion exchange membrane 5, makes things convenient for the inside assembling process of inhibitor, reduces the assembly degree of difficulty.

On the basis of the technical scheme, the outer sides of the leacheate inlet 21 and the leacheate outlet 22 are both provided with joint penetrating pipes 24. Through the arrangement of the connector penetrating pipe 24, other different pipelines can be conveniently connected externally, the use is more convenient, and the applicability is strong; the connector penetrating pipe 24 is made of PEEK material, which generally refers to polyetheretherketone and can be obtained from the prior art.

When the device works, serial or parallel regenerated liquid channels can be selected according to different working conditions; specifically, when the parallel type regeneration liquid channel is selected, regeneration liquid can selectively enter from the first inlet/outlet 11, at this time, the second inlet/outlet 12 and the third inlet/outlet 31 are closed, the first parallel pipeline 14 and the second parallel pipeline 15 are both opened, the regeneration liquid enters through the first inlet/outlet 11, then enters the first electrolysis chamber 9 and the second electrolysis chamber 10 respectively, and finally flows out from the fourth inlet/outlet 32; or the regeneration liquid can selectively enter from the third inlet/outlet 31, the first inlet/outlet 11 and the fourth inlet/outlet 32 are closed, the first parallel pipeline 14 and the second parallel pipeline 15 are both opened, and the regeneration liquid enters the second electrolysis chamber 10 and the first electrolysis chamber 9 through the third inlet/outlet 31, and finally flows out from the second inlet/outlet 12.

When the series regeneration channel is selected, two situations also exist; specifically, the regeneration liquid can selectively enter from the first inlet/outlet 11, at this time, the first parallel pipeline 14 is opened, the second parallel pipeline 15, the second inlet/outlet 12 and the fourth inlet/outlet 32 are closed, the regeneration liquid enters through the first inlet/outlet 11, then sequentially passes through the first electrolytic chamber 9, then enters the second electrolytic chamber 10 through the first parallel pipeline 14, and finally flows out from the third inlet/outlet 31; or the regeneration liquid can selectively enter from the third inlet and outlet 31, at this time, the first parallel pipeline 14 is opened, the second parallel pipeline 15, the second inlet and outlet 12 and the fourth inlet and outlet 32 are closed, the regeneration liquid enters through the third inlet and outlet 31, then sequentially passes through the second electrolytic chamber 10, then enters the first electrolytic chamber 9 through the first parallel pipeline 14, and finally flows out from the first inlet and outlet 11.

Example 2

On the basis of the first technical solution of the above embodiment, the top end surfaces of the first groove 18 and the second groove 34 are both provided with a sealing lip 19 for sealing and isolating. The top end surfaces of the first groove 18 and the second groove 34 are both end surfaces of the first clamping plate 1 and the second clamping plate 3 close to one side of the middle plate 2. More preferably, the first ion exchange membrane 4 and the second ion exchange membrane 5 are fitted with the seal lip 19. Through setting up seal lip 19, mainly play the sealing action to first ion exchange membrane 4 and second ion exchange membrane 5, avoid the problem influence suppression efficiency that appears string liquid or weeping between first electrolysis chamber 9, suppression room 8 and the second electrolysis chamber 10.

Example 3

In addition to the first embodiment, the suppression chamber 8, the first electrolysis chamber 9 and the second electrolysis chamber 10 are filled with resin particles. The resin particles mentioned above are conductive. Specifically, the resin particles in the suppression chamber can support the space between the first ion exchange membrane 4 and the second ion exchange membrane 5, and are beneficial to the ion exchange process; resin particles filled in the first electrolytic chamber 9 and the second electrolytic chamber 10 are mainly used for supporting and guiding flow; the device can effectively avoid the increase of dead volume caused by serious deformation and other conditions of the ion exchange membrane in the using process and influence the inhibition efficiency, and meanwhile, the resin particles can also play a role in guiding the regenerated liquid and accelerate the electrolytic reaction process.

On the basis of the technical scheme, the sieve plates 20 are arranged at the first inlet, the second inlet and the second outlet of the first clamping plate, the eluent inlet and the eluent outlet of the middle plate, and the third inlet and the fourth inlet 31 and the fourth outlet 32 of the second clamping plate. Specifically, the sieve plate 20 is made of polyethylene. The sieve plates 20 are arranged at the inflow end and the outflow end of the liquid phase including the leacheate and the regeneration liquid, so that resin particles can be effectively reserved in corresponding chambers, the function of the resin particles is better played, and the blocking of a liquid phase flow channel is avoided; meanwhile, the processing difficulty of an eluent inlet and an eluent outlet and a regeneration liquid inlet and an eluent outlet can be reduced, namely, the particle size of resin particles is smaller and is usually between 50 and 150 mu m, so that the method can be suitable for the condition that the aperture of a liquid phase inlet and outlet is larger, and the processing difficulty of a liquid phase inlet and outlet channel is effectively reduced.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. An ion chromatography suppressor with a regenerant channel capable of being switched in series and parallel is characterized by comprising a first clamping plate (1), a middle plate (2), a second clamping plate (3), a first ion exchange membrane (4), a second ion exchange membrane (5), a first electrode (6) and a second electrode (7); the first clamping plate (1), the middle plate (2) and the second clamping plate (3) are tightly buckled in sequence, the first ion exchange membrane (4) is tightly pressed between the first clamping plate (1) and the middle plate (2), and the second ion exchange membrane (5) is tightly pressed between the middle plate (2) and the second clamping plate (3); a suppression chamber (8) is formed between the first ion exchange membrane (4) and the second ion exchange membrane (5), a first electrolysis chamber (9) is formed between the inner side of the first clamping plate (1) and the first ion exchange membrane (4), the first electrode (6) is arranged in the first electrolysis chamber (9), a second electrolysis chamber (10) is formed between the inner side of the second clamping plate (3) and the second ion exchange membrane (5), and the second electrode (7) is arranged in the second electrolysis chamber (10); the utility model discloses a novel multi-functional washing machine, including intermediate lamella (2), lateral plate (3), first splint (1) and second splint, the both ends of intermediate lamella (2) are provided with leacheate import (21) and leacheate export (22), be provided with first import and export (11) and second import and export (12) on the lateral wall on the first splint (1), be provided with third import and export (31) and fourth import and export (32) on the lateral wall on the second splint (3), first import and export (11) and third import and export (31) between through first parallel pipeline (13) intercommunication, the second is imported and exported (12) and fourth between import and export (32) through second parallel pipeline (14) intercommunication, all be provided with control flap (15) on first parallel pipeline (13) and the parallel pipeline (14) of second.

2. The ion chromatography suppressor with regeneration liquid channels capable of being switched in series and parallel according to claim 1, wherein a first pressing plate (16) is arranged on the outer side of the first clamping plate (1), a second pressing plate (17) is arranged on the outer side of the second clamping plate (3), and the first pressing plate (16), the first clamping plate (1), the middle plate (2), the second clamping plate (3) and the second pressing plate (17) are sequentially pressed through bolts.

3. The ion chromatography suppressor with regenerant liquid channels capable of being switched in series-parallel connection according to claim 1, wherein a first groove (18) is formed inside the first clamping plate (1), and a first electrolytic chamber (9) is formed between the first groove (18) and the first ion exchange membrane (4); a flange (33) is arranged on the inner side of the second clamping plate (3), a second groove (34) is formed in the flange (33), and a second electrolysis chamber (10) is formed between the second groove (34) and the second ion exchange membrane (5).

4. A regenerant flow channel series-parallel switchable ion chromatography suppressor according to claim 3, wherein the side of said intermediate plate (2) near the second clamping plate (3) is provided with a third groove (23) for positioning the second ion exchange membrane (5), and said flange (33) is adapted to the third groove (23).

5. The ion chromatography suppressor with regeneration liquid channels capable of being switched in series and parallel as claimed in claim 3, wherein the top end faces of the first groove (18) and the second groove (34) are provided with sealing lips (19) for sealing and isolating.

6. The ion chromatography suppressor with regenerant flow channels capable of being switched in series-parallel connection according to claim 1, wherein the interior of the suppression chamber (8), the interior of the first electrolysis chamber (9) and the interior of the second electrolysis chamber (10) are filled with resin particles.

7. The ion chromatography suppressor with regenerant liquid channels capable of being switched in series-parallel connection according to claim 6, wherein the first inlet/outlet and the second inlet/outlet of the first clamping plate, the eluent inlet and the eluent outlet of the intermediate plate, and the third inlet/outlet (31) and the fourth inlet/outlet (32) of the second clamping plate are provided with sieve plates (20).

8. The ion chromatography suppressor with regenerant flow channels capable of being switched in series-parallel connection as claimed in claim 1, wherein the outer sides of said eluent inlet (21) and eluent outlet (22) are provided with connector pipes (24).