CN214319402U

CN214319402U - Multifunctional solid-phase extraction column for water sample

Info

Publication number: CN214319402U
Application number: CN202022830509.2U
Authority: CN
Inventors: 李琮
Original assignee: Tianjin Chengzhou Technology Co ltd
Current assignee: Tianjin Chengzhou Technology Co ltd
Priority date: 2020-12-01
Filing date: 2020-12-01
Publication date: 2021-10-01
Anticipated expiration: 2030-12-01

Abstract

The utility model relates to a multifunctional solid phase extraction column for water samples, which comprises a column tube body, wherein the top of the column tube body is provided with a liquid inlet, the bottom of the column tube body is provided with a liquid outlet, and the liquid outlet is provided with a check valve; the column tube body is respectively provided with a first socket, a second socket and a third socket from top to bottom, and the first socket, the second socket and the third socket are internally provided with a first plug box, a second plug box and a third plug box which are matched and movably inserted and embedded in the first plug box, the second plug box and the third plug box respectively; the first box, the second box and the third box are open at the top, and the bottom of the first box, the second box and the third box is provided with a first filter screen, a second filter screen and a third filter screen for containing fillers respectively. Filling the multi-type detection filler layer by layer according to a certain sequence; the method can enrich various substances to be detected to carry out layer-by-layer prefiltering without connecting various solid phase extraction columns in series, thereby reducing the using volume of the solvent and effectively reducing the blocking risk of the solid phase extraction columns.

Description

Multifunctional solid-phase extraction column for water sample

Technical Field

The utility model relates to a solid phase extraction post technical field especially relates to a multi-functional solid phase extraction post for water sample.

Background

A Solid Phase extraction column (SPE column for short) is a sample pretreatment device developed from a chromatographic column and used for extraction, separation and concentration. The method is mainly applied to sample pretreatment of target compounds in various foods, agricultural and livestock products, environmental samples and biological samples. Solid phase extraction techniques have been widely used in many national standards (GB/T) and industry analytical standards.

The solid phase extraction technology is used in water sample detection, and the used mechanism is that the filler of the solid phase extraction absorbs the object to be detected of the water sample, and then the object is eluted by the organic solvent, so that the purpose of enriching the target object is achieved. The water sample has a very small target content and must be enriched before detection.

The problems that arise are: firstly, the nature of the detected substances in a water sample is various, and in practical use, the prior art generally adopts a mode of connecting various solid phase extraction columns in series to ensure that each substance to be detected can be adsorbed; secondly, the content of solid impurities in a common water sample is very high, and the upper sieve plate of the common solid-phase extraction column can have a blocking phenomenon when the water sample is filtered on a large scale, so that targeted pre-filtration is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that overcome exist among the prior art not enough, provide a multi-functional solid-phase extraction post for water sample.

The utility model discloses a realize through following technical scheme: a multifunctional solid phase extraction column for a water sample comprises a column tube body, wherein a liquid inlet is formed in the top of the column tube body, a liquid outlet is formed in the bottom of the column tube body, and a check valve is arranged at the liquid outlet; the column tube body is respectively provided with a first socket, a second socket and a third socket from top to bottom, and the first socket, the second socket and the third socket are internally provided with a first plug box, a second plug box and a third plug box which are matched and movably inserted and embedded in the first plug box, the second plug box and the third plug box respectively; the first box, the second box and the third box are open at the top, and the bottom of the first box, the second box and the third box is provided with a first filter screen, a second filter screen and a third filter screen for containing fillers respectively.

According to the above technical solution, preferably, the filtering precision of the first filter screen is smaller than that of the second filter screen, and the filtering precision of the second filter screen is smaller than that of the third filter screen.

According to the technical scheme, the opening width of the first inserting opening, the opening width of the second inserting opening and the opening width of the third inserting opening are 1/2 of the diameter of the column tube body.

According to the above technical scheme, preferably, a push rod extending into the top of the first insertion box is arranged through the liquid inlet, and the push rod can reciprocate relative to the column tube body.

The utility model has the advantages that: the column tube body is provided with a first socket, a second socket and a third socket from top to bottom in a transverse direction, and is matched with a first insert box, a second insert box and a third insert box which are movably inserted and embedded in the first socket, the second socket and the third insert box, the bottoms of the first insert box, the second insert box and the third insert box are respectively provided with a first filter screen, a second filter screen and a third filter screen which have different filter precisions and play a role in pre-filtering layer by layer, and the filling materials for multi-type detection are filled in a layered mode according to a certain sequence; various substances to be detected can be enriched without connecting various solid phase extraction columns in series, so that the use volume of a solvent is reduced, and the blocking risk of the solid phase extraction columns is effectively reduced.

Drawings

Fig. 1 shows a schematic front view structure diagram of an embodiment of the present invention.

Fig. 2 shows a schematic assembled front view structure according to an embodiment of the present invention.

In the figure: 1. a column tube body; 2. a liquid inlet; 3. a liquid outlet; 4. a flow stop valve; 5. a first socket; 6. a second socket; 7. a third socket; 8. a first cartridge; 9. a second cartridge; 10. a third cartridge; 11. a first filter screen; 12. a second filter screen; 13. a third filter screen; 14. a push rod.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and preferred embodiments.

As shown in fig. 1 and 2, the solid phase extraction column for a multifunctional water sample of the present invention comprises a column tube body 1, wherein a liquid inlet 2 is arranged at the top of the column tube body 1, so as to conveniently put in a water sample to be extracted; a liquid outlet 3 is formed in the bottom of the column tube body 1, and a flow stopping valve 4 is arranged at the liquid outlet 3, so that the discharge of waste liquid can be controlled in a centralized manner; the column tube body 1 is respectively provided with a first socket 5, a second socket 6 and a third socket 7 which are consistent in size and specification and are transverse from top to bottom, the three sockets are not limited, and a fourth socket and more than the fourth socket can be arranged as required; the first jack 5, the second jack 6 and the third jack 7 are respectively provided with a first plug box 8, a second plug box 9 and a third plug box 10 which are matched with the first jack, the second jack and the third jack and can be movably inserted and embedded in the first jack, the second jack and the third jack; the first plug box 8, the second plug box 9 and the third plug box 10 respectively have certain matching precision with the first jack 5, the second jack 6 and the third jack 7 so as to prevent a water sample to be detected from overflowing from a jack gap during use; first box 8, the second of inserting is inserted box 9 and third and is inserted box 10 and be open-top and the bottom is equipped with first filter screen 11, second filter screen 12 and the third filter screen 13 that is used for holding the filler respectively, is convenient for detect with the polymorphic type with pack according to certain filter fineness order layering and load.

According to the above technical solution, preferably, the filtering precision of the first filter screen 11 is smaller than that of the second filter screen 12, and the filtering precision of the second filter screen 12 is smaller than that of the third filter screen 13; the first filter screen 11 is convenient for filtering larger particles, the second filter screen 12 is convenient for filtering medium-sized particles, and the third filter screen 13 is convenient for filtering smaller particles; the filter pore size of the filter screen can be designed in advance according to actual needs.

According to the above technical solution, preferably, the opening width of the first, second and

third insertion openings

5, 6 and 7 is 1/2 of the diameter of the column tube body 1, so as to facilitate the insertion of the cartridge into the column tube body 1.

According to the above technical scheme, preferably, the warp income liquid mouth 2 is equipped with and stretches into to the push rod 14 of 8 top positions of first box of inserting, push rod 14 can make reciprocating motion relative to the column tube body, further provides decurrent extrusion force for the water sample that awaits measuring can be fast through the required material of level enrichment adsorption.

During the use, pack the polymorphic type for the detection filler according to certain filter fineness order layering and insert in box 8 is inserted to the first, the second is inserted in box 9 and the third and is inserted in box 10, then imbed in column pipe body 1 with it, pour into the water sample of taking the extraction through going into liquid mouth 2, after the water sample flows through first filter screen 11, second filter screen 12 and third filter screen 13 respectively and adsorbs required material through the level enrichment, extrude the air in column pipe body 1 through the push rod for the water sample waste liquid opens the discharge through flow stopping valve 4 at liquid outlet 3.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The multifunctional solid-phase extraction column for the water sample is characterized by comprising a column tube body (1), wherein a liquid inlet (2) is formed in the top of the column tube body (1), a liquid outlet (3) is formed in the bottom of the column tube body (1), and a check valve (4) is arranged at the liquid outlet (3); the column tube body (1) is respectively provided with a first socket (5), a second socket (6) and a third socket (7) from top to bottom, and the first socket (5), the second socket (6) and the third socket (7) are internally provided with a first inserting box (8), a second inserting box (9) and a third inserting box (10) which are matched and movably inserted and embedded in the first inserting box, the second inserting box and the third inserting box; the first plug box (8), the second plug box (9) and the third plug box (10) are respectively provided with a top opening and a bottom which is provided with a first filter screen (11), a second filter screen (12) and a third filter screen (13) for containing fillers.

2. The multifunctional solid-phase extraction column for water samples as claimed in claim 1, wherein the filtration precision of the first filter (11) is smaller than that of the second filter (12), and the filtration precision of the second filter (12) is smaller than that of the third filter (13).

3. The multifunctional water sampling solid phase extraction column as claimed in claim 2, wherein the opening width of the first spigot (5), the second spigot (6) and the third spigot (7) is 1/2 of the diameter of the column tube body (1).

4. The multifunctional solid-phase extraction column for water samples as claimed in claim 3, wherein a push rod (14) extending to the top of the first insert box (8) is arranged through the liquid inlet (2), and the push rod (14) can reciprocate relative to the column tube body (1).