CN216498608U

CN216498608U - Membrane device for chromatographic analysis

Info

Publication number: CN216498608U
Application number: CN202122833425.9U
Authority: CN
Inventors: 李芳�; 李艳美; 粟有志; 王兴磊; 冯新忠; 徐颖洁; 雷红琴
Original assignee: Ili Normal University; Yining Customs Technical Center
Current assignee: Ili Normal University; Yining Customs Technical Center
Priority date: 2021-11-18
Filing date: 2021-11-18
Publication date: 2022-05-13
Anticipated expiration: 2031-11-18

Abstract

The utility model belongs to the technical field of chromatographic analysis detection devices, and particularly relates to a membrane passing device for chromatographic analysis, which comprises a filter main body and a filter main body bracket, wherein an injection push rod is coaxially arranged in the filter main body, the lower end of the filter main body is provided with an opening and is in threaded connection with a sample injection small bottle, a filter membrane is arranged close to the lower end of the filter main body, a liquid inlet structure is arranged on the side wall of the filter main body above the filter membrane, a funnel is arranged below the filter membrane, and a return spring is slidably sleeved on the injection push rod and positioned at the top of the filter main body; the filter main body support comprises a strip-shaped chassis, a fixing transverse plate is arranged on a supporting rod at the center of the strip-shaped chassis in a height-adjustable mode, circular through holes are formed in the fixing transverse plate in a uniform clearance mode, and a second reset spring and a strip-shaped pressing plate are arranged above the fixing transverse plate in a sliding mode.

Description

Membrane device for chromatographic analysis

Technical Field

The utility model belongs to the technical field of chromatographic analysis detection devices, and particularly relates to a membrane passing device for chromatographic analysis.

Background

In the prior art, the sample extracting solution is mostly filtered by matching an injector with a needle head removed and a filter membrane, a small box with the filter membrane is required to be placed between the injector and a small sample inlet and a small liquid outlet and is stably aligned when in operation, because the connection is unstable, one hand is required to hold the injection rod all the time, the other hand is required to inject the injection rod, single intermittent operation is carried out, time and labor are consumed, the efficiency is low, the preparation work is complicated, the alignment completely depends on manual work, and the stability is poor.

Disclosure of Invention

In view of the above problems, the utility model aims to provide a membrane-passing device for chromatographic analysis, which has the advantages of compact structure, simple operation, high filtration efficiency, convenient addition of a sample extracting solution, low cost, time saving and labor saving.

The purpose of the utility model is realized by the following technical scheme: the utility model provides a chromatography is with crossing membrane device, includes filter main part, advances kind of vial and filter main part support, coaxial injection push rod and the sealed piston of connection on the injection push rod of being provided with in the filter main part, the lower extreme opening of filter main part and with advance kind of vial threaded connection, the filter main part is close to the lower tip and is equipped with the filter membrane, filter main part lateral wall is located the filter membrane top is provided with the inlet structure, the below of filter membrane be equipped with filter membrane outer fringe matched with funnel, be located on the injection push rod filter main part top slidable sleeve has reset spring.

The filter main part support is including placing the bar chassis of advancing a kind of vial, the vertical bracing piece of installing in bar chassis center, correspond to on the bracing piece bar chassis position level is provided with the fixed diaphragm of fixed filter main part, even clearance is equipped with a plurality of circular through-holes that can hold the filter main part and pass on the fixed diaphragm, the height-adjustable of being connected of fixed diaphragm and bracing piece, it can bulldoze to lie in the slip of fixed diaphragm top on the bracing piece the bar clamp plate of injection push rod, lie in on the bracing piece be provided with reset spring two between fixed diaphragm and the bar clamp plate, set up on the bar clamp plate and prevent pivoted guide structure and be convenient for the manual pressing according to the clamp plate of pressing.

Further, the feed liquor structure is including setting up inlet in the filter main part, the inlet is connected with the liquid feeding funnel through the feed liquor hose, the connection can be dismantled on fixed diaphragm to the liquid feeding funnel.

Furthermore, the guide structure includes that vertical setting is in guide bar on the fixed diaphragm, be equipped with the through-hole that can hold the guide bar to slide and wear out on the bar clamp plate corresponding to the guide bar position, thereby the guide bar certainly wear out in the through-hole and can slide in the through-hole and prevent the bar clamp plate rotates at the in-process that pushes down.

Furthermore, the pressing plate comprises a supporting tube and a pressing plate, the supporting tube is sleeved on the supporting rod in a sliding mode, the lower end of the supporting tube is fixedly connected with the strip-shaped pressing plate, and the top of the supporting tube is fixedly connected with the lower surface of the pressing plate.

Furthermore, the small end of the funnel can extend into the sample injection small bottle from the opening at the lower end of the filter main body, so that the sample is ensured to be accurately and unmistakably dropped into the sample injection small bottle, and the sample cannot be stained with the bottle mouth or the side wall of the sample injection small bottle.

Further, be equipped with the bulge loop on the filter main part inner wall, the bulge loop upper surface is equipped with the annular groove, the filter membrane edge is sealed the chucking by the sealing washer with annular groove shape matched with in the annular groove.

Furthermore, a through hole is formed in the center of the strip-shaped pressing plate, a short pipe is arranged in the through hole, the short pipe is sleeved on the supporting rod in a sliding mode, the short pipe slides relative to the supporting rod, the guide effect of the guide rail can be achieved, and the strip-shaped pressing plate is prevented from moving obliquely.

Furthermore, a groove for placing a sample injection vial is arranged on the strip-shaped chassis opposite to the filter main body, so that the sample injection vial can be conveniently and rapidly placed in place.

Further, rubber pads for preventing vibration are arranged on the upper surface of the strip-shaped chassis and the bottom surface of the strip-shaped pressing plate.

Further, the strip-shaped pressing plate can be detached from the top of the supporting rod, so that the filter main body can be conveniently taken out for cleaning.

When the utility model is used for filtering samples, firstly, a filter main body is penetrated into a circular through hole on a fixed transverse plate, a sample injection small bottle is placed on a strip-shaped base plate and is in threaded connection with the filter main body, a sample extracting solution with a preset volume is added into the filter main body from a liquid inlet structure, a pressing plate is manually pressed to enable the strip-shaped pressing plate to be pressed downwards to be pressed against the top of an injection push rod, the injection push rod is continuously pressed downwards until the sample extracting solution in the filter main body is completely filtered and enters the sample injection small bottle, a second return spring is arranged on a support rod between the fixed transverse plate and the strip-shaped pressing plate, the pressing speed and the pressing force are conveniently controlled, the strip-shaped pressing plate is convenient to reset after the filtering is finished, the return spring is slidably sleeved on the top of the filter main body on the injection push rod, the injection push rod is convenient to reset and the pressing speed is prevented from being too high, and because the lower end of the filter main body is opened, and with the appearance vial threaded connection, therefore the connection of filter main part and appearance vial is reliable and stable, does not need the operator to use hand in the filtration process, the filter main part is close to the lower tip and is equipped with the filter membrane, and the filter membrane is stable to be set up in the filter main part, the lower surface of filter membrane be equipped with filter membrane outer fringe matched with funnel, the funnel can guarantee that the filtrating directly gets into appearance vial and prevents to pollute the bottleneck and lean on the lateral wall on top.

Has the advantages that: the utility model has the advantages of compact structure, simple operation, high filtration efficiency, convenient addition of the sample extracting solution, low cost, time saving and labor saving.

Drawings

The specific structure of the application is given by the following figures and examples:

FIG. 1: the structure of embodiment 1 of the utility model is schematically shown;

FIG. 2: the structure schematic diagram of the fixed transverse plate in the embodiment 1 of the utility model;

FIG. 3: the structure of the filter body in embodiment 1 of the utility model is schematically illustrated;

FIG. 4: the installation structure of the filter membrane in the filter body in embodiment 2 of the utility model is schematically shown;

FIG. 5: the structural schematic diagram of the strip-shaped chassis in embodiment 3 of the utility model.

In the figure: 1. the device comprises a filter main body, 2 sample injection small bottles, 3 filter main body supports, 11 injection push rods, 12 filter membranes, 13 liquid inlet structures, 14 funnels, 15 reset springs, 16 convex rings, 17 annular grooves, 31 strip-shaped base plates, 32 support rods, 33 fixing transverse plates, 34 circular through holes, 35 strip-shaped pressing plates, 36 reset springs, 37 guide structures, 38 pressing plates, 131 liquid inlets, 132 liquid inlet hoses, 133 liquid adding funnels, 311 grooves, 312 rubber pads, 371 guide rods, 372 through holes, 381 support tubes, 382 pressing plates and 351 short tubes.

Detailed Description

The following is a detailed description of the present invention for further explanation. The utility model is not limited to the claims, and all equivalent structures or equivalent processes that can be directly or indirectly applied to other related technical fields using the contents of the specification and the drawings are included in the scope of the utility model.

In the present invention, for convenience of description, the description of the relative positional relationship of the components is described according to the layout of the drawings in the specification, such as: the positional relationship of up, down, left, right, etc. is determined in accordance with the layout direction in the drawings of the specification.

Embodiment 1, refer to fig. 1, a chromatography is with crossing membrane device, including filter main part 1, advance kind of vial 2 and filter main part support 3, coaxial injection push rod 11 and the sealed piston of connection on injection push rod 11 of being provided with in the filter main part 1, the lower extreme opening of filter main part 1 and with advance kind of vial 2 threaded connection, filter main part 1 is close to the lower tip and is equipped with filter membrane 12, filter main part 1 lateral wall is located the filter membrane 12 top is provided with inlet structure 13, the below of filter membrane 12 be equipped with filter membrane 12 outer fringe matched with funnel 14, lie in on the injection push rod 11 filter main part 1 top slidable sleeve has reset spring 15.

3 supports of filter main part are including placing the bar chassis 31 of appearance small bottle 2, the vertical bracing piece 32 of installing in bar chassis 31 center, be corresponding to on the bracing piece 32 bar chassis 31 position level is provided with the fixed diaphragm 33 of fixed filter main part, even clearance is equipped with a plurality of circular through-holes 34 that can hold filter main part 1 and pass on the fixed diaphragm 33, fixed diaphragm 33 and bracing piece 32 be connected height-adjustable, it can bulldoze to lie in the slip of fixed diaphragm 33 top on the bracing piece 32 the bar clamp plate 35 of injection push rod 11, lie in on the bracing piece 32 be provided with reset spring two 36 between fixed diaphragm 33 and the bar clamp plate 35, set up on the bar clamp plate 35 and prevent pivoted guide structure 37 and be convenient for the manual pressure clamp plate 38 who presses.

Liquid inlet structure 13 is including setting up inlet 131 on filter main part 1, inlet 131 is connected with liquid feeding funnel 133 through feed liquor hose 132, liquid feeding funnel 133 can be dismantled and connect on fixed diaphragm 33.

The guide structure 37 includes a guide rod 371 vertically disposed on the fixed transverse plate 33, a through hole 372 corresponding to the guide rod 371 is disposed on the strip-shaped pressing plate 35 and allowing the guide rod 371 to slide out, and the guide rod 371 passes out of the through hole 372 and can slide in the through hole 372 to prevent the strip-shaped pressing plate 35 from rotating in the pressing process.

Further, the pressing plate 38 includes a supporting tube 381 and a pressing plate 382, the supporting tube 381 is slidably sleeved on the supporting rod 32, the lower end of the supporting tube 381 is fixedly connected to the strip-shaped pressing plate 35, the top of the supporting tube 381 is fixedly connected to the lower surface of the pressing plate 382, a through hole is formed in the center of the strip-shaped pressing plate 35, a short tube 351 is arranged in the through hole, the short tube 351 is slidably sleeved on the supporting rod 32, the short tube 351 relatively slides on the supporting rod 32, a guide effect of a guide rail can be achieved, the strip-shaped pressing plate 35 is prevented from moving obliquely, a thread is arranged on the lower half portion of the supporting rod 32, and the supporting rod 32 is located on the upper surface and the lower surface of the fixed horizontal plate 33 and is provided with fastening nuts for adjusting the positioning height.

When the utility model is used for filtering samples, firstly, the filter main body 1 is penetrated into the circular through hole 34 on the fixed transverse plate 33, the sample injection small bottle 2 is placed on the strip-shaped base plate 31 and is in threaded connection with the filter main body 1, a sample extracting solution with a preset volume is added into the filter main body 1 from the liquid inlet structure 13, the pressing plate 38 is manually pressed, the strip-shaped pressing plate 35 is pressed downwards to be pressed against the top of the injection push rod 11, the injection push rod 11 is pressed downwards continuously until the sample extracting solution in the filter main body 1 is filtered and enters the sample injection small bottle 2, the support rod 32 is provided with a second return spring 36 between the fixed transverse plate 33 and the strip-shaped pressing plate 35, the pressing speed and the pressing force are convenient to control, the strip-shaped pressing plate 35 is convenient to reset after the filtering is finished, the return spring 15 is slidably sleeved on the top of the filter main body 1 on the injection push rod 11, be convenient for injection push rod 11 to reset and prevent that the speed of pushing down is too violent, because the lower extreme opening of filter main part 1, and with advance kind of a kind of vial 2 threaded connection, consequently filter main part 1 is reliable and stable with advancing kind of vial 2's connection, does not need the operator to hand in filtering process, the filter main part is close to the lower tip and is equipped with filter membrane 12, and filter membrane 12 stably sets up in filter main part 1, the lower surface of filter membrane 12 be equipped with filter membrane 12 outer fringe matched with funnel 14, funnel 14 can guarantee that the filtrating directly gets into advance kind of vial 2 and prevent to pollute the bottleneck and lean on the lateral wall on top.

Embodiment 2, refer to fig. 2, as the further optimization design of embodiment 1, the small end of the funnel 14 can extend into the sample vial 2 from the opening at the lower end of the filter main body 1, so as to ensure that the sample can be accurately dropped into the sample vial, and the sample can not contaminate the bottle mouth or the side wall of the sample vial 2, the inner wall of the filter main body 1 is provided with a convex ring 16, the upper surface of the convex ring 16 is provided with an annular groove 17, and the edge of the filter membrane 12 is tightly clamped in the annular groove 17 by a sealing ring matched with the annular groove 17 in shape in a sealing manner.

Embodiment 3, referring to fig. 3, as a further optimized design of embodiment 1, a groove 311 for placing the vial 2 is provided on the strip-shaped bottom plate 31 facing the filter body, so as to facilitate rapid placement of the vial 2 in place, and rubber pads 312 for preventing vibration are provided on the upper surface of the strip-shaped bottom plate 31 and the bottom surface of the strip-shaped pressing plate 35.

Claims

1. The membrane passing device for chromatographic analysis is characterized by comprising a filter main body, a sample injection small bottle and a filter main body support, wherein an injection push rod and a sealing piston connected to the injection push rod are coaxially arranged in the filter main body, the lower end of the filter main body is provided with an opening and is in threaded connection with the sample injection small bottle, a filter membrane is arranged close to the lower end of the filter main body, a liquid inlet structure is arranged on the side wall of the filter main body above the filter membrane, a funnel matched with the outer edge of the filter membrane is arranged below the filter membrane, and a reset spring is slidably sleeved on the top of the filter main body on the injection push rod;

2. The apparatus according to claim 1, wherein the liquid inlet structure comprises a liquid inlet disposed on the filter body, the liquid inlet is connected to a liquid feeding funnel through a liquid inlet hose, and the liquid feeding funnel is detachably connected to the fixed transverse plate.

3. The chromatography membrane-passing device according to claim 1 or 2, wherein the guide structure comprises a guide rod vertically arranged on the fixed transverse plate, a through hole through which the guide rod can slide is arranged on the strip-shaped pressing plate corresponding to the position of the guide rod, and the guide rod penetrates out of the through hole and can slide in the through hole.

4. The membrane-passing device for chromatographic analysis according to claim 1, wherein the pressing plate comprises a supporting tube and a pressing plate, the supporting tube is slidably sleeved on the supporting rod, the lower end of the supporting tube is fixedly connected with the strip-shaped pressing plate, and the top of the supporting tube is fixedly connected with the lower surface of the pressing plate.

5. The chromatography membrane device of claim 1, wherein the funnel tip extends into the sample vial from the lower opening of the filter body.

6. A membrane-passing device for chromatographic analysis according to claim 5 wherein the filter body is provided with a raised ring on the inner wall thereof, the raised ring having an annular groove on the upper surface thereof, and the edge of the filter membrane is sealingly retained in the annular groove by a sealing ring which is fitted in the shape of the annular groove.

7. The chromatographic membrane-passing device according to claim 3, wherein the strip-shaped pressing plate has a through hole at the center, and a short tube is disposed in the through hole and slidably fitted over the supporting rod.

8. The chromatography membrane device of claim 7, wherein the strip-shaped bottom plate is provided with a groove for placing the sample vial at a position opposite to the filter body.