CN214973101U

CN214973101U - Disposable integral injection filter for chromatographic analysis and detection

Info

Publication number: CN214973101U
Application number: CN202121170843.8U
Authority: CN
Inventors: 雷红琴; 牛鸣光; 张旭龙; 李芳�; 粟有志; 李艳美
Original assignee: Yining Customs Technical Center
Current assignee: Yining Customs Technical Center
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2021-12-03
Anticipated expiration: 2031-05-28

Abstract

The utility model belongs to the technical field of chromatographic analysis detection device, in particular to a disposable integrated injection filter for chromatographic analysis detection, an injection push rod and a sealing piston are coaxially arranged in a filter main body, the sealing piston can be drawn out from the upper end of the filter main body, the lower end of the filter main body is opened and is provided with a thread connected with a sample injection small bottle, a filter membrane is arranged above the thread in the filter main body, a funnel is arranged below the filter membrane, the utility model also comprises a support pipe frame which comprises a chassis with a support rod at the center, a fixed disk is arranged on the support rod, a plurality of rows or a plurality of circles of circular through holes capable of allowing the filter main body to pass are evenly arranged on the fixed disk, a support plate at the top of the support rod is connected with a force application plate through a plurality of springs, and a press plug plate connected with the bottom of the force application plate is arranged on the support rod, the utility model discloses compact structure, easy operation, filtration efficiency is high, and is with low costs, labour saving and time saving.

Description

Disposable integral injection filter for chromatographic analysis and detection

Technical Field

The utility model belongs to the technical field of chromatographic analysis detection device, concretely relates to chromatographic analysis detects with disposable integral type injection filter.

Background

Before the sample chromatographic analysis in a laboratory, because of the precision of a chromatographic system and the accuracy requirement on the result analysis, a sample extracting solution must be filtered by a filter membrane to enter a chromatograph for analysis, the filtration can protect the chromatographic system and a chromatographic column, the service life of the column is prolonged, the accuracy of data is improved, in addition, the filtration can eliminate the pressure fluctuation caused by particles generated by friction and the baseline fluctuation caused by irregular impurities, and eliminate the interference of bubbles to a detection system The efficiency is low, the preparation work is tedious, and the alignment completely depends on the manual work, and the stability is poor.

Disclosure of Invention

To above problem, the utility model aims at providing a compact structure, easy operation, filtration efficiency is high, and is with low costs, labour saving and time saving's chromatography detects with disposable integral type filter.

The purpose of the utility model is realized through the following technical scheme: the utility model provides a chromatographic analysis detects with disposable integral type injection filter, includes the cylindric filter main part that the outer wall mark has the capacity scale, coaxial injection push rod and the sealed piston of connection on the injection push rod of being provided with in the filter main part, sealed piston sliding connection be in the filter main part just sealed piston can certainly the filter main part upper end is taken out, the lower extreme opening of filter main part, the lower extreme of filter main part is equipped with and advances kind small bottle threaded connection's screw thread, it is equipped with the filter membrane to be located the screw thread top in the filter main part, the below of filter membrane be equipped with filter membrane outer fringe matched with funnel.

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 recess shape matched with in the recess.

Further, the top of the funnel is integrally connected with the lower surface of the convex ring.

Further, the filter body volume is no greater than the volume of the sample vial.

The utility model also provides a support pipe support for stably supporting the injection filter, which comprises a chassis for placing sample injection vials, wherein a support rod is vertically arranged at the center of the chassis, a fixed disk for fixing the filter main body is horizontally arranged on the support rod, a plurality of rows or a plurality of circles of circular through holes for allowing the filter main body to pass through are uniformly arranged on the fixed disk, the connecting height of the fixed disk and the support rod is adjustable, a support plate is arranged at the top of the support rod, a plurality of springs are uniformly arranged on the upper surface of the support plate, the upper end of each spring is connected with a force application plate, a press plug plate is slidably arranged on the support rod between the fixed disk and the support plate and is connected with the bottom of the force application plate through a support connecting rod, the sample injection vials with more quantity are simultaneously filtered and injected, and the fixed disk is firstly adjusted to a proper height, after putting into the filter main part with the sample and making sealed piston reset, penetrate the filter main part in the circular through-hole in proper order, because filter main part and appearance vial body coupling, during the filtration, appearance vial has the supporting role to the filter main part, and manual pressure application plate, application plate downstream drive the plug board downstream who is connected with it bulldoze the injection push rod, accomplish and filter.

Furthermore, the supporting rod is provided with threads, the fixed disk is sleeved on the supporting rod in a sliding mode through the central through hole, and the supporting rod is located at the bottom of the fixed disk and is in threaded connection with a nut for supporting the fixed disk.

Furthermore, a through hole is formed in the center of the plug 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 plug pressing plate is prevented from moving obliquely.

When the utility model is used for filtering samples, firstly, the injection push rod which is coaxially arranged with the filter main body and the sealing piston which is connected with the injection push rod are drawn out from the upper end of the filter main body, adding a sample extracting solution into the filter main body, installing a sealing piston into the filter main body, fixing the filter main body on a support pipe frame, the lower end of the filter body is connected with the sampling bottle through screw threads due to the lower end opening of the filter body, therefore, the connection between the filter body and the sample injection bottle is stable and reliable, an operator does not need to hold the filter by hands in the filtering process, a filter membrane is arranged above the thread in the filter main body and is stably arranged in the filter main body, the lower surface of the filter membrane is provided with a funnel matched with the outer edge of the filter membrane, and the funnel can ensure that filtrate directly enters the sample injection small bottle to prevent the bottle mouth from being polluted and the side wall close to the top end of the sample injection small bottle from being polluted.

Has the advantages that: the utility model discloses compact structure, easy operation, filtration efficiency is high, and is with low costs, labour saving and time 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 schematic view of the installation structure of the support pipe frame in embodiment 2 of the utility model is shown;

FIG. 3: the utility model discloses the schematic structure of fixed disk in embodiment 2.

In the figure: 1. the device comprises a filter main body, 2 injection push rods, 3 sealing pistons, 4 filter membranes, 5 funnels, 6 sample injection vials, 7 convex rings, 11 threads, 71 grooves, 72 sealing rings, 01 chassis, 02 supporting rods, 03 fixing plates, 04 supporting plates, 05 springs, 06 force applying plates, 07 pressure plug plates, 08 supporting connecting rods, 031 circular through holes, 032 central through holes, 033 nuts, 071 through holes and 072 short pipes.

Detailed Description

The following is a detailed description of the present invention for further explanation. The patent protection scope of the present invention is not limited to the above description, and all the equivalent structures or equivalent processes that are used in the specification and the attached drawings are directly or indirectly applied to other related technical fields.

In the present invention, for convenience of description, the description of the relative position 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 detects with disposable integral type injection filter, including the cylindric filter main part 1 that the outer wall mark has the capacity scale, coaxial injection push rod 2 and the sealed piston 3 of connection on the injection push rod of being provided with in the filter main part 1, sealed piston 3 sliding connection be in the filter main part 1 just sealed piston 3 can certainly 1 upper end of filter main part is taken out, the lower extreme opening of filter main part 1, the lower extreme of filter main part 1 is equipped with the screw thread 11 with advance kind of small bottle threaded connection, it is equipped with filter membrane 4 to lie in the screw thread top in the filter main part 1, the below of filter membrane 4 be equipped with filter membrane 4 outer fringe matched with funnel 5.

The small end of the funnel 5 can extend into the sample injection small bottle 6 from the opening at the lower end of the filter main body 1, so that the sample is ensured to be accurately dropped into the sample injection small bottle 6 without mistake, and the sample can not be infected with the bottle mouth or the side wall of the sample injection small bottle 6.

The inner wall of the filter body 1 is provided with a convex ring 7, the upper surface of the convex ring 7 is provided with an annular groove 71, the edge of the filter membrane 4 is tightly clamped in the groove 71 in a sealing way by a sealing ring 72 matched with the shape of the groove 71, the top of the funnel 5 is integrally connected with the lower surface of the convex ring 7, and the volume of the filter body 1 is not more than that of the sample sending small bottle 6.

When the utility model is used for filtering samples, firstly, the injection push rod 2 which is coaxially arranged with the filter main body 1 and the sealing piston 3 which is connected on the injection push rod 2 are drawn out from the upper end of the filter main body 1, the sample extracting solution is added in the filter main body 1, the sealing piston 3 is arranged in the filter main body 1, then the filter main body 1 is fixed on the supporting pipe frame, because the lower end of the filter main body 1 is opened, the lower end of the filter main body 1 is in threaded connection with the sample injection small bottle 6, the connection between the filter main body 1 and the sample injection small bottle 6 is stable and reliable, an operator does not need to hold by hand in the filtering process, a filter membrane 4 is arranged above the thread in the filter main body 1, the filter membrane 4 is stably arranged in the filter main body 1, the lower surface of the filter membrane 4 is provided with a funnel 5 which is matched with the outer edge of the filter membrane, the funnel 5 ensures that the filtrate enters directly into the vial 6 preventing contamination of the mouth and the side walls near the top.

Embodiment 2, referring to fig. 2 and 3, the present invention further provides a support tube rack for stably supporting an injection filter in embodiment 1, comprising a chassis 01 for placing sample vials, wherein a support rod 02 is vertically installed at the center of the chassis 01, a fixing plate 03 for fixing a filter main body is horizontally arranged on the support rod 02, a plurality of rows or a plurality of circles of circular through holes 031 for allowing the filter main body to pass through are uniformly formed in the fixing plate 03, the connecting height of the fixing plate 03 and the support rod 02 is adjustable, a support plate 04 is arranged on the top of the support rod 02, a plurality of springs 05 are uniformly arranged on the upper surface of the support plate 04, an application plate 06 is connected to the upper end of each spring 05, a press plug plate 07 is slidably arranged on the support rod 02 between the fixing plate 03 and the support plate 04, the press plug plate 07 is connected to the bottom of the application plate 06 by a support link 08, be used for a great number of advance kind of vial to filter simultaneously and advance a kind, at first adjust fixed disk 03 to suitable height, put into filter main part 1 with the sample and make sealed piston 3 reset the back, penetrate the filter in proper order in circular through-hole 031, during the filtration, because filter main part 1 and advance kind vial 6 body coupling, advance kind vial 6 and have a supporting role to filter main part 1, can manually press application of force board 06, application of force board 06 downstream drives the stopper board 07 downstream that is connected with it and bulldozes injection push rod 2, accomplish the filtration, be equipped with the screw thread on the bracing piece 02, fixed disk 03 closes through central through-hole 032 slidable sleeve on the bracing piece 02, lie in on the bracing piece 02 fixed disk 03 bottom position threaded connection has the support the nut 033 of fixed disk.

The center of the pressure plug plate 07 is provided with a through hole 071, a short pipe 072 is arranged in the through hole 071, the short pipe 072 is slidably sleeved on the support rod 02, and the short pipe 072 slides relative to the support rod 02, so that the guide function of the guide rail can be realized, and the pressure plug plate 07 is prevented from tilting.

Claims

1. The utility model provides a chromatographic analysis detects with disposable integral type injection filter, its characterized in that, the cylindric filter main part that has the capacity scale including the outer wall mark, coaxial injection push rod and the sealed piston of connection on the injection push rod of being provided with in the filter main part, sealed piston sliding connection be in the filter main part just sealed piston can certainly the filter main part upper end is taken out, the lower extreme opening of filter main part, the lower extreme of filter main part is equipped with and advances kind small bottle threaded connection's screw thread, it is equipped with the filter membrane to be located the screw thread top in the filter main part, the below of filter membrane be equipped with filter membrane outer fringe matched with funnel.

2. The disposable one-piece syringe filter for chromatography detection of claim 1 wherein the small end of the funnel extends into the vial from the lower opening of the filter body.

3. The disposable integrated syringe filter for chromatography and detection according to claim 1, wherein the inner wall of the filter body is provided with a convex ring, the upper surface of the convex ring is provided with an annular groove, and the edge of the filter membrane is tightly clamped in the groove by a sealing ring matched with the shape of the groove.

4. The disposable one-piece syringe filter for chromatography detection according to claim 3 wherein said funnel top is integrally connected to said collar lower surface.

5. The utility model provides a support pipe support for stable support injection filter, a serial communication port, including placing the chassis of appearance small bottle, the vertical bracing piece of installing in chassis center, the bracing piece is improved level and is provided with the fixed disk of fixed filter main part, evenly be equipped with multirow or many circles circular through-hole that can hold the filter main part and pass on the fixed disk, the fixed disk is adjustable with the height-adjusting of being connected of bracing piece, the bracing piece top is provided with the backup pad, the backup pad upper surface evenly is provided with many springs, the spring upper end is connected with the application of force board, lie in on the bracing piece can slide between fixed disk and the backup pad and be provided with the pressure cock assembly, the pressure cock assembly pass through supporting rod with application of force board bottom is connected.

6. The support tube rack for stably supporting an injection filter according to claim 5, wherein the support rod is provided with threads, the fixed disk is slidably sleeved on the support rod through the central through hole, and a nut for supporting the fixed disk is threadedly connected to the support rod at a position of the bottom of the fixed disk.

7. The support tube rack for stably supporting a syringe filter according to claim 5, wherein the plug plate is centrally provided with a through hole, and a short tube is provided in the through hole and slidably fitted over the support rod.