Rapid purification column for pretreatment of perfluorinated compound

Abstract

The utility model relates to the technical field of purification columns, in particular to a rapid purification column for pretreatment of perfluorinated compounds, which comprises two column frames, a first partition plate and a second partition plate are fixedly connected between the two column frames, the first partition plate is provided with a first through hole, the second partition plate is provided with a second through hole, and the first through hole is communicated with the second through hole. A column pipe is inserted into the second partition plate, the bottom end of the column pipe abuts against the first partition plate, a sieve plate and filler are arranged in the column pipe, a switching adapter is inserted into the top end of the column pipe, an injector is fixedly connected to the column frame through a clamping structure, the bottom end of the injector is inserted into the switching adapter, and the bottom end of the injector is connected with the first partition plate. A piston is slidably connected to the interior of the injector, and a push rod is fixedly connected to the top end of the piston; the column tube and the injector can be quickly fixed, the stability during pressurized injection is improved, and the effect of purifying a sample extracting solution in the column tube is further improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of purification column structure design, specifically relates to a kind of for perfluorinated compound pretreatment rapid purification column. BACKGROUND

[0002] Perfluorinated compound (PFCS) is a kind of new type of persistent organic pollutants that hydrogen atom on organic carbon chain is replaced by fluorine atom, mainly including perfluorocarboxylic acid (PFCAs) and perfluorosulfonic acid (PFSAs);The common detection method of perfluorinated compound is high performance liquid chromatography tandem mass spectrometry, and there is higher requirement to sample liquid.

[0003] Currently perfluorinated compound purification pretreatment process mainly uses solid phase extraction column to purify sample extract, but when injecting pressurization in the inside of traditional extraction purification column, the operator needs to hold the bottom end of column pipe, and the relative sliding between syringe and column pipe is prone to occur, so that injection pressurization operation is unstable, injection pressurization effect is poor, and the purification effect of sample extract in the inside of column pipe is affected. SUMMARY

[0004] The utility model discloses a kind of for perfluorinated compound pretreatment rapid purification column, can quickly fixed column pipe and syringe, improve the stability when pressurizing injection, and then improve the effect of sample extract in the inside of column pipe.

[0005] The utility model discloses the above-mentioned purposes are realized by the following technical solutions:

[0006] A kind of for perfluorinated compound pretreatment rapid purification column, including two column frames, fixed structure is equipped between two column frames, the fixed structure includes first baffle and second baffle, first baffle and second baffle are fixedly connected between two column frames, first baffle is equipped with first through-hole, second baffle is equipped with second through-hole, column pipe is inserted into second baffle, the bottom end of column pipe is in abutment with first baffle, the inside of column pipe is equipped with sieve plate and filler, the top end of column pipe is inserted into adapter, syringe is fixedly connected on column frame by clamping structure.

[0007] As a preferred scheme of the embodiment, the bottom end of the syringe is inserted into the adapter, a piston is slidably connected in the interior of the syringe, and a push rod is fixedly connected to the top end of the piston.

[0008] As a preferred scheme of the embodiment, the diameter of the first through-hole is less than the outer diameter of the column pipe, and the diameter of the second through-hole is greater than the outer diameter of the column pipe.

[0009] As a preferred scheme of the embodiment, the clamping structure comprises a sliding bar, the sliding bar is slidably connected to the column frame, a clamping bar is fixedly connected to the sliding bar, two guide rods in T-shaped section are fixedly connected to the clamping bar, the guide rods are slidably connected to the column frame, the two clamping bars clamp the syringe, and a first spring is fixedly connected between the guide rods and the column frame.

[0010] As a preferred scheme of the embodiment, the clamping bar is in L-shaped section, the bottom end of the clamping bar is in arc-shaped section, and a pull rod in T-shaped section is fixedly connected to the sliding bar.

[0011] As a preferred scheme of the embodiment, the sliding bar is provided with a limiting structure, the limiting structure comprises four limiting grooves, two limiting grooves are arranged on each of the sliding bars, a limiting block in L-shaped section is slidably connected to the column frame, the limiting block is clamped with the limiting groove, a fixed block is fixedly connected to the column frame, and a second spring is fixedly connected between the fixed block and the limiting block.

[0012] As a preferred scheme of the embodiment, a guide shaft is penetrated through the second spring, one end of the guide shaft is fixedly connected to the fixed block, and the other end of the guide shaft is slidably connected to the limiting block.

[0013] As a preferred scheme of the embodiment, the column frame is provided with a positioning structure, the positioning structure comprises a mounting block, the mounting block is fixedly connected to the column frame, a positioning column is fixedly connected to the mounting block, two positioning holes are arranged on the syringe, and the positioning column is inserted into the positioning holes.

[0014] As a preferred scheme of the embodiment, the column frame is provided with an observation structure, the observation structure comprises a pointer, the top end of the push rod is fixedly connected with the pointer, and a scale bar matched with the pointer is fixedly connected to the column frame.

[0015] As a preferred scheme of the embodiment, the bottom end of the first partition plate is fixedly connected with a connecting frame, a connecting pipe is inserted into the bottom end of the column pipe, the top end of the connecting pipe is in T-shaped section, the end of the connecting frame is fixedly connected with an elastic clamping block, and the elastic clamping block is inserted into the connecting pipe.

[0016] Compared with the prior art, the utility model has the advantages of the following:

[0017] The utility model discloses a first partition and second partition are fixedly connected between two column frame, be equipped with first through -hole on the first partition, be equipped with second through -hole on the second partition, the column pipe is inserted to have on the second partition, the bottom of column pipe and first partition resist contact, the inside of column pipe is equipped with sieve plate and filler, the top of column pipe is inserted to have the adapter, the syringe is fixedly connected through the clamping structure on the column frame, the bottom of syringe and adapter are inserted, the inside sliding connection of syringe has the piston, the top fixed connection of piston has the push rod, can quickly fixed column pipe and syringe, improved the stability when pressurizing injection, and then improved the effect that column pipe internal purification sample extraction liquid. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the whole structure schematic diagram of the utility model;

[0019] Figure 2 It is Figure 1 The enlarged structure schematic diagram of A part shown in the figure;

[0020] Figure 3 It is the connecting structure schematic diagram of column pipe and filler of the utility model;

[0021] Figure 4 It is Figure 3 The enlarged structure schematic diagram of B part shown in the figure;

[0022] Figure 5 It is Figure 3 The enlarged structure schematic diagram of C part shown in the figure;

[0023] Figure 6 It is Figure 5 The enlarged structure schematic diagram of D part shown in the figure;

[0024] Figure 7 It is the connecting structure schematic diagram of column frame and mounting hole of the utility model.

[0025] Shown in the figure: 1, column frame; 2, fixed structure; 201, first partition; 202, second partition; 203, first through -hole; 204, second through -hole; 3, column pipe; 4, adapter; 5, syringe; 6, clamping structure; 601, slide; 602, clamping strip; 603, pull rod; 604, guide rod; 605, first spring; 7, limit structure; 701, limit groove; 702, limit block; 703, fixed block; 704, second spring; 705, guide shaft; 8, observation structure; 801, pointer; 802, scale bar; 9, positioning structure; 901, mounting block; 902, positioning column; 903, positioning hole; 10, push rod; 11, piston; 12, sieve plate; 13, filler; 14, connecting pipe; 15, connecting frame; 16, elastic clamping block; 17, mounting hole. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0027] Please refer to Figures 1 to 7 As shown in the figure, the utility model embodiment provides a kind of for perfluorinated compound pretreatment rapid purification column, specifically including two column frames 1, fixed structure 2 is equipped between two column frames 1, fixed structure 2 includes first baffle 201 and second baffle 202, first baffle 201 and second baffle 202 are fixedly connected between two column frames 1, first through-hole 203 is equipped on first baffle 201, second through-hole 204 is equipped on second baffle 202, column tube 3 is inserted in second baffle 202, and the bottom end of column tube 3 is in contact with first baffle 201.The inside of column tube 3 is equipped with sieve plate 12 and filler 13, adapter 4 is inserted in the top end of column tube 3, syringe 5 is fixedly connected on column frame 1 by clamping structure 6, and the bottom end of syringe 5 is inserted into adapter 4.Syringe 5 is slidably connected with piston 11 in the inside, and the top end of piston 11 is fixedly connected with push rod 10, the section of column frame 1 is L-shaped structure, and four mounting holes 17 are arranged on the bottom end of column frame 1.The diameter of first through-hole 203 is less than the outer diameter of column tube 3, and the diameter of second through-hole 204 is greater than the outer diameter of column tube 3, so that column tube 3 and syringe 5 can be quickly fixed, the stability during pressurized injection is improved, and the effect of purifying sample extraction liquid in column tube 3 is improved.

[0028] Please refer to Figures 1 to 7 As shown in the figure, clamping structure 6 includes slide bar 601, and slide bar 601 is slidably connected on column frame 1, clamping strip 602 is fixedly connected on slide bar 601, two guide rods 604 with T-shaped section are fixedly connected on clamping strip 602, and guide rod 604 is slidably connected with column frame 1.Two clamping strips 602 clamp syringe 5, and first spring 605 is fixedly connected between guide rod 604 and column frame 1.In the embodiment, the section of clamping strip 602 is L-shaped structure, the section of the bottom end of clamping strip 602 is arc-shaped structure, and pull rod 603 with T-shaped section is fixedly connected on slide bar 601, so that syringe 5 can be quickly clamped by clamping structure 6, and the stability of syringe 5 is improved.

[0029] Please refer to Figures 1 to 7As shown, the slide 601 is provided with a limiting structure 7, the limiting structure 7 includes four limiting grooves 701, each slide 601 is provided with two limiting grooves 701, the column frame 1 is slidingly connected with the limiting block 702 with L-shaped cross section, the limiting block 702 is clamped with the limiting groove 701. The column frame 1 is fixedly connected with the fixed block 703, the fixed block 703 is fixedly connected with the limiting block 702, the second spring 704 is provided in the inside of the second spring 704, the guide shaft 705 is provided at one end of the fixed block 703, the guide shaft 705 is slidingly connected with the limiting block 702 at the other end. The slide 601 is limited by the limiting structure 7, and the clamping effect of the clamping structure 6 is improved.

[0030] Please refer to Figures 1 to 7 As shown, the column frame 1 is provided with a positioning structure 9, the positioning structure 9 includes a mounting block 901, the column frame 1 is fixedly connected with the mounting block 901, the mounting block 901 is fixedly connected with the positioning column 902, the syringe 5 is provided with two positioning holes 903, and the positioning column 902 is inserted into the positioning hole 903. The syringe 5 is positioned by the positioning structure 9, and the installation efficiency of the syringe 5 is improved.

[0031] Please refer to Figures 1 to 7 As shown, the column frame 1 is provided with an observation structure 8, the observation structure 8 includes a pointer 801, the top end of the push rod 10 is fixedly connected with the pointer 801, and the column frame 1 is fixedly connected with a scale bar 802 used in cooperation with the pointer 801. The injection amount of the injected sample of the syringe 5 is more intuitively observed through the observation structure 8, and the accuracy of the extraction and purification result is improved. The bottom end of the first partition plate 201 is fixedly connected with a connecting frame 15, the bottom end of the column tube 3 is inserted with a connecting pipe 14, the top end of the connecting pipe 14 is provided with a T-shaped structure, the end of the connecting frame 15 is fixedly connected with an elastic clamping block 16, and the elastic clamping block 16 is inserted into the connecting pipe 14. The connecting pipe 14 is clamped by the elastic clamping block 16, and the stability of the connecting pipe 14 is improved by the arrangement of the connecting frame 15 and the elastic clamping block 16, so that the column tube 3 is prevented from slipping off the connecting pipe 14.

[0032] The utility model discloses a column pipe 3 is inserted second baffle 202 on the second through -hole 204, and the bottom end of column pipe 3 and first baffle 201 resist, and the liquid outlet position of column pipe 3 bottom end breaks through first baffle 201 on the first through -hole 203, then the connecting pipe 14 is inserted in the bottom liquid outlet pipe of column pipe 3, and when connecting, can be inserted in the elastic clamping block 16 on the connecting frame 15 of connecting pipe 14, can avoid subsequent connecting pipe 14 to slip, then install syringe 5, and then the injection port of syringe 5 is aimed at the connecting hole on adapter 4 and is inserted, then adapter 4 is inserted on column pipe 3, and when inserting, pay attention to the positioning hole 903 of syringe 5 top end is aimed at the positioning column 902 on mounting block 901, avoids syringe 5 later rotation, improves the stability when syringe 5 injection, then pulls up limiting block 702, and second spring 704 is compressed, and limiting block 702 no longer is clamped with the limiting slot 701 on slide strip 601, and push pull rod 603, make first spring 605 compression, when clamping strip 602 and syringe 5 are tightly embraced, release limiting block 702, and second spring 704 resets and drives limiting block 702 and another limiting slot 701 clamping, and then through two clamping strips 602 tightly embrace and hold syringe 5, and when pushing push rod 10 pressurization, the clamping strip 602 of syringe 5 bottom end portion is stressed, avoids syringe 5 to shake, improves the effect of injection pressurization, and the setting of guide shaft 705 improves the stability of limiting block 702 sliding, simultaneously avoids second spring 704 to deviate, and the setting of guide rod 604 improves the stability of clamping strip 602 sliding, simultaneously avoids first spring 605 to deviate, when needing to inject sample extraction liquid, push push rod 10, and push rod 10 drives piston 11 to slide down, and then pushes out sample extraction liquid, and push rod 10 is provided with pointer 801, and pointer 801 points to scale bar 802 on column frame 1, and it is convenient to more directly observed and control sample extraction liquid injection amount, and sample extraction liquid is injected into column pipe 3, and is filtered and purified through sieve plate 12 and filler 13, and the liquid after purification is discharged from connecting pipe 14.

[0033] It is apparent for a person skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, the scope of the present application being defined by the claims appended hereto rather than by the above description, and all the changes which fall within the meaning and the scope of the equivalent elements of the claims are intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims to the figures in which the reference signs are used.

[0034] Furthermore, it should be understood that although the present specification describes exemplary embodiments, not every embodiment contains only one independent technical solution, and the present specification is described in this way only for the sake of clarity, and a person skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that a person skilled in the art can understand.

Claims

1. A rapid purification column for pretreatment of perfluorinated compounds, comprising two column racks (1), characterized in that: A fixing structure (2) is provided between the two column frames (1). The fixing structure (2) includes a first partition (201) and a second partition (202). The first partition (201) and the second partition (202) are fixedly connected between the two column frames (1). The first partition (201) is provided with a first through hole (203), and the second partition (202) is provided with a second through hole (204). A column tube (3) is inserted into the second partition (202). The bottom end of the column tube (3) abuts against the first partition (201). The inside of the column tube (3) is provided with a sieve plate (12) and a packing material (13). The top end of the column tube (3) is inserted with an adapter (4). A syringe (5) is fixedly connected to the column frame (1) through a clamping structure (6).

2. The rapid purification column for pretreatment of perfluorinated compounds according to claim 1, characterized in that: The bottom of the column frame (1) is provided with four mounting holes (17). The bottom of the syringe (5) is inserted into the adapter (4). The syringe (5) is slidably connected to a piston (11). The top of the piston (11) is fixedly connected to a push rod (10).

3. The rapid purification column for pretreatment of perfluorinated compounds according to claim 1, characterized in that: The diameter of the first through hole (203) is smaller than the outer diameter of the column tube (3), and the diameter of the second through hole (204) is larger than the outer diameter of the column tube (3).

4. The rapid purification column for pretreatment of perfluorinated compounds according to claim 1, characterized in that: The clamping structure (6) includes a slide bar (601), which is slidably connected to the column frame (1). A clamping bar (602) is fixedly connected to the slide bar (601). Two guide rods (604) with T-shaped cross sections are fixedly connected to the clamping bar (602). The guide rods (604) are slidably connected to the column frame (1). The two clamping bars (602) clamp the syringe (5). A first spring (605) is fixedly connected between the guide rods (604) and the column frame (1).

5. The rapid purification column for pretreatment of perfluorinated compounds according to claim 4, characterized in that: The clamping bar (602) has an L-shaped cross-section, and the bottom end of the clamping bar (602) has an arc-shaped cross-section. A pull rod (603) with a T-shaped cross-section is fixedly connected to the slide bar (601).

6. The rapid purification column for pretreatment of perfluorinated compounds according to claim 4, characterized in that: The slide bar (601) is provided with a limiting structure (7), the limiting structure (7) includes four limiting grooves (701), each slide bar (601) is provided with two limiting grooves (701), the column frame (1) is slidably connected with a limiting block (702) with an L-shaped cross section, the limiting block (702) engages with the limiting groove (701), the column frame (1) is fixedly connected with a fixing block (703), and a second spring (704) is fixedly connected between the fixing block (703) and the limiting block (702).

7. The rapid purification column for pretreatment of perfluorinated compounds according to claim 6, characterized in that: The second spring (704) has a guide shaft (705) running through its interior. One end of the guide shaft (705) is fixedly connected to the fixing block (703), and the other end of the guide shaft (705) is slidably connected to the limiting block (702).

8. The rapid purification column for pretreatment of perfluorinated compounds according to claim 1, characterized in that: The column frame (1) is provided with a positioning structure (9), the positioning structure (9) includes a mounting block (901), the mounting block (901) is fixedly connected to the column frame (1), the mounting block (901) is fixedly connected with a positioning post (902), the syringe (5) is provided with two positioning holes (903), and the positioning post (902) is inserted into the positioning hole (903).

9. The rapid purification column for pretreatment of perfluorinated compounds according to claim 2, characterized in that: The column frame (1) is provided with an observation structure (8), the observation structure (8) includes a pointer (801), the top of the push rod (10) is fixedly connected to the pointer (801), and the column frame (1) is fixedly connected to a scale bar (802) that works in conjunction with the pointer (801).

10. The rapid purification column for pretreatment of perfluorinated compounds according to claim 1, characterized in that: The bottom end of the first partition (201) is fixedly connected to a connecting frame (15), the bottom end of the column tube (3) is inserted with a connecting pipe (14), the top end of the connecting pipe (14) has a T-shaped structure, the end of the connecting frame (15) is fixedly connected with an elastic clamp (16), and the elastic clamp (16) is inserted into the connecting pipe (14).

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