CN215414678U

CN215414678U - Solid phase extraction device for food detection

Info

Publication number: CN215414678U
Application number: CN202121874530.0U
Authority: CN
Inventors: 闫敏; 李杨; 李永政
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-11
Filing date: 2021-08-11
Publication date: 2022-01-04
Anticipated expiration: 2031-08-11

Abstract

The utility model discloses a solid phase extraction device for food detection, which comprises a sealing glass frame, an upper cover plate, a plurality of extraction columns, a plurality of connecting pipes and a plurality of extraction needles, wherein the bottom end of the sealing glass frame is provided with a lower cover plate, the top end of the lower cover plate is provided with a plurality of collection test tubes, the top end of the lower cover plate is provided with a plurality of placing grooves, two sides of the sealing glass frame are fixedly provided with fixed side plates, the inner sides of the fixed side plates are provided with sliding grooves, sliding blocks are arranged in the sliding grooves, and threaded rods are arranged in the sliding grooves. According to the utility model, the collection test tube is taken out from the bottom end of the sealed glass frame, so that the situation that the upper cover plate, the extraction column and the like are frequently taken off from the top end of the sealed glass frame is avoided, the collection test tube is conveniently and quickly taken out and replaced, the replacement efficiency is high, the situation that the solution in the extraction column is spilled out can be effectively avoided, and the use is safe and convenient.

Description

Solid phase extraction device for food detection

Technical Field

The utility model relates to the technical field of solid-phase extraction, in particular to a solid-phase extraction device for food detection.

Background

The food safety detection is used for detecting harmful substances in food according to national indexes, and is mainly used for detecting some harmful and toxic indexes. The food detection methods are various, wherein the solid phase extraction is widely applied to the fields of medicine, food, environment, commodity inspection, chemical industry and the like because the operation is simple and special equipment is not needed. The solid phase extraction is a sample pretreatment technology developed in recent years, is developed by combining a liquid-solid extraction column and a liquid chromatography technology, is mainly used for separating, purifying and concentrating samples, can improve the recovery rate of analytes compared with the traditional liquid-liquid extraction method, more effectively separates the analytes from interfering components, reduces the sample pretreatment process, and is simple to operate, time-saving and labor-saving.

At present, the solid phase extraction device is when the in-service use, because the test tube of collecting drip washing solution needs frequent change, and present solid phase extraction device is mostly with all take off from sealed glass frame top such as protective cover board and extraction column, will collect the test tube again and take out the change, it is comparatively loaded down with trivial details to change like this, and change alone and cause extraction column etc. to empty easily, cause consequences such as reagent spills, it is comparatively inconvenient to use.

Therefore, it is necessary to provide a solid phase extraction device for food detection to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a solid phase extraction device for food detection, which is characterized in that a collection test tube is taken out from the bottom end of a sealed glass frame, so that the situation that an upper cover plate, an extraction column and the like are frequently taken out from the top end of the sealed glass frame is avoided, the collection test tube is conveniently and quickly taken out and replaced, the replacement efficiency is high, the situation that a solution in the extraction column is spilled can be effectively avoided, the use is safe and convenient, and the defects in the technology are overcome.

In order to achieve the above purpose, the utility model provides the following technical scheme: the solid phase extraction device for food detection comprises a sealing glass frame, an upper cover plate, a plurality of extraction columns, a plurality of connecting pipes and a plurality of extraction needles, wherein the upper cover plate is arranged at the top end of the sealing glass frame, the plurality of extraction columns are arranged at the top of the upper cover plate, the plurality of connecting pipes are arranged at the top end of the upper cover plate, the bottom end of the upper cover plate penetrates through the upper cover plate and extends to the bottom of the upper cover plate, the bottom ends of the extraction columns extend into the top ends of the connecting pipes and are communicated with the insides of the connecting pipes, the plurality of extraction needles are arranged at the bottom ends of the connecting pipes, the top ends of the connecting pipes extend into the top ends of the extraction needles and are communicated with the insides of the extraction needles, a lower cover plate is arranged at the bottom end of the sealing glass frame, a plurality of collection test tubes are arranged in the sealing glass frame, a plurality of placing grooves are arranged at the top ends of the collection test tubes, and fixing side plates are fixedly arranged at two sides of the sealing glass frame, the lower cover plate is characterized in that two sides of the lower cover plate are respectively contacted with the inner sides of the two fixed side plates, a sliding groove is formed in the inner side of each fixed side plate, a sliding block and two sliding blocks are arranged inside the sliding groove, the inner sides of the sliding blocks are respectively fixedly connected with the two sides of the lower cover plate, a threaded rod is arranged inside the sliding groove, one end of the threaded rod penetrates through the top ends of the sliding blocks and the fixed side plates and is connected with the sliding blocks through threads, and two ends of the threaded rod are rotatably connected with the inner wall of the sliding groove through bearings.

Preferably, one end of the threaded rod is fixedly provided with a rotating handle, the rotating handle is arranged at the top of the fixed side plate, and the rotating handle is arranged at the bottom of the upper cover plate.

Preferably, an upper sealing groove is formed in the bottom end of the upper cover plate, an extraction needle is fixedly arranged in the upper sealing groove, and the top end of the sealing glass frame is arranged in the upper sealing gasket.

Preferably, a lower sealing groove is formed in the top end of the lower cover plate, the lower sealing groove is formed in the outer side of the placing groove, a lower sealing gasket is fixedly arranged in the lower sealing groove, and the bottom end of the sealing glass frame is arranged in the lower sealing gasket.

Preferably, a first fixing frame is fixedly arranged at the top end of the upper cover plate, a plurality of first fixing grooves are formed in the top end of the first fixing frame, and the bottom end of the extraction column penetrates through the inside of the first fixing grooves.

Preferably, a second fixing frame is fixedly arranged at the top end of the lower cover plate, the second fixing frame is arranged inside the sealing glass frame, a second fixing groove is formed in the top end of the second fixing frame, and the bottom end of the collecting test tube penetrates through the inside of the second fixing groove.

Preferably, a vacuum tube is fixedly arranged at the rear end of the sealing glass frame, one end of the vacuum tube penetrates through the rear end of the sealing glass frame and is communicated with the inside of the sealing glass frame, and a valve is fixedly arranged on the vacuum tube.

In the technical scheme, the utility model provides the following technical effects and advantages:

through changeing the rotation of driving the threaded rod, the slider is along with the rotation downstream of threaded rod, the slider drives down apron downstream, the apron drives down collects test tube and second mount downstream, after collecting the test tube and moving sealed glass frame bottom, just can take off and change the collection test tube from apron and second mount down, the contra-rotation is changeed the handle, the collection test tube after the change will enter into sealed glass frame inside, take out from the bottom of sealed glass frame through collecting the test tube, the condition of frequently taking off from sealed glass frame top such as upper cover plate and extraction post has been avoided appearing, make the taking out and the change of collecting the test tube all comparatively convenient and fast, change efficiency is higher, and can effectually avoid the condition emergence that solution spills out in the extraction post, it is comparatively safe and convenient to use.

Drawings

In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic overall perspective view of the present invention;

FIG. 3 is a schematic overall perspective cross-sectional structural view of the present invention;

FIG. 4 is a schematic perspective view of an extraction column according to the present invention;

FIG. 5 is a schematic perspective sectional view of a stationary side plate according to the present invention;

FIG. 6 is a schematic perspective view of the upper cover plate and the connecting tube of the present invention;

FIG. 7 is a schematic perspective view of the upper cover plate and the extraction needle of the present invention;

fig. 8 is a schematic perspective view of the lower cover plate, the collection tube and the second holder according to the present invention.

Description of reference numerals:

the device comprises a sealed glass frame 1, an upper cover plate 2, an extraction column 3, a connecting pipe 4, an extraction needle 5, a lower cover plate 6, a collection test tube 7, a placement groove 8, a fixed side plate 9, a sliding groove 10, a sliding block 11, a threaded rod 12, a rotating handle 13, an upper sealing groove 14, an upper sealing gasket 15, a lower sealing groove 16, a lower sealing gasket 17, a first fixing frame 18, a first fixing groove 19, a second fixing frame 20, a second fixing groove 21 and a vacuum pipe 22.

Detailed Description

In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.

The utility model provides a solid phase extraction device for food detection as shown in figures 1-8, which comprises a sealed glass frame 1, an upper cover plate 2, a plurality of extraction columns 3, a plurality of connecting pipes 4 and a plurality of extraction needles 5, wherein the upper cover plate 2 is arranged at the top end of the sealed glass frame 1, the plurality of extraction columns 3 are arranged at the top end of the upper cover plate 2, the plurality of connecting pipes 4 are arranged at the top end of the upper cover plate 2, the bottom end of the upper cover plate 2 penetrates through the upper cover plate 2 and extends to the bottom of the upper cover plate 2, the bottom ends of the extraction columns 3 extend into the top ends of the connecting pipes 4 and are communicated with the inside of the connecting pipes 4, the plurality of extraction needles 5 are arranged at the bottom end of the connecting pipes 4, the top ends of the connecting pipes 4 extend into the top ends of the extraction needles 5 and are communicated with the inside of the extraction needles 5, the bottom end of the sealed glass frame 1 is provided with a lower cover plate 6, the top end of the lower cover plate 6 is provided with a plurality of collection test tubes 7, the collection test tubes 7 are arranged inside the sealed glass frame 1, the top end of the lower cover plate 6 is provided with a plurality of placing grooves 8, the bottom end of the collecting test tube 7 is arranged in the placing grooves 8, both sides of the sealing glass frame 1 are fixedly provided with fixed side plates 9, both sides of the lower cover plate 6 are respectively contacted with the inner sides of the two fixed side plates 9, the inner sides of the fixed side plates 9 are provided with sliding chutes 10, the inner sides of the two sliding chutes 10 are respectively fixedly connected with both sides of the lower cover plate 6, the sliding chutes 10 are internally provided with threaded rods 12, one end of each threaded rod 12 penetrates through the top ends of the sliding blocks 11 and the fixed side plates 9 and is connected with the sliding blocks 11 through threads, both ends of each threaded rod 12 are rotatably connected with the inner wall of the sliding chute 10 through bearings, and the collecting test tube 7 is taken out from the bottom end of the sealing glass frame 1, so that the situation that the upper cover plate 2, the extracting column 3 and the like are frequently taken out from the top end of the sealing glass frame 1 is avoided, make taking out and changing of collecting test tube 7 all comparatively convenient and fast, change efficiency is higher, and can effectually avoid the condition emergence that solution spills in the extraction column 3, it is comparatively safe and convenient to use.

The fixed handle 13 that changes that is equipped with of threaded rod 12 one end, change and establish at fixed curb plate 9 top 13, change and establish 2 bottoms on the upper cover plate 13, be convenient for drive threaded rod 12 and rotate for it is comparatively labour saving and time saving to rotate.

An upper sealing groove 14 is formed in the bottom end of the upper cover plate 2, an extraction needle 5 is fixedly arranged in the upper sealing groove 14, the top end of the sealing glass frame 1 is arranged in the upper sealing gasket 15, air can be prevented from entering the sealing glass frame 1 from the bottom end of the upper cover plate 2 and the top end of the sealing glass frame 1, and the sealing glass frame 1 can be kept well sealed.

Lower apron 6 top has been seted up down seal groove 16, seal groove 16 establishes in the standing groove 8 outside down, seal groove 16 inside fixed being equipped with lower sealed pad 17 down, sealed glass frame 1 bottom is established inside lower sealed pad 17, can prevent that the air from lapping 6 top and sealed glass frame 1 bottom department under and entering into inside sealed glass frame 1, can make inside the better leakproofness of keeping of sealed glass frame 1.

The rear end of the sealing glass frame 1 is fixedly provided with a vacuum tube 22, one end of the vacuum tube 22 penetrates through the rear end of the sealing glass frame 1 and is communicated with the inside of the sealing glass frame 1, and the vacuum tube 22 is fixedly provided with a valve which is convenient to be connected with an external vacuum pump, so that air in the sealing glass frame 1 can be pumped out, a negative pressure environment can be formed conveniently, the extraction speed can be increased, and the extraction efficiency can be improved.

The implementation mode is specifically as follows: the bottom ends of the extraction needles 5 and the connecting pipe 4 are spliced, the upper cover plate 2 is placed at the top end of the sealed glass frame 1, so that the bottom end of the extraction needle 5 extends into the collection test tube 7, the bottom end of the extraction column 3 penetrates through the inside of the first fixing groove 19 and the bottom end of the extraction column is inserted into the top end of the connecting pipe 4, an extracted solution is added into the extraction column 3, the vacuum pipe 22 is connected with an external vacuum pump, so that air in the sealed glass frame 1 can be pumped out through the vacuum pump, the pressure in the sealed glass frame 1 is reduced to form negative pressure, extracted waste liquid in the extraction column 3 flows into the collection test tube 7 through the connecting pipe 4 and the extraction needle 5, when all waste liquid flows into the collection test tube 7, the rotating handle 13 is rotated, the rotating handle 13 drives the threaded rod 12 to rotate, and due to the threaded connection between the threaded rod 12 and the sliding block 11, the sliding block 11 moves downwards along with the rotation of the threaded rod 12, the slide block 11 drives the lower cover plate 6 to move downwards, the lower cover plate 6 drives the collecting test tube 7 and the second fixing frame 20 to move downwards, when the collecting test tube 7 moves to the bottom of the sealing glass frame 1, the collecting test tube 7 can be taken down from the lower cover plate 6 and the second fixing frame 20 and replaced, the rotating handle 13 is rotated reversely, and the replaced collecting test tube 7 can enter the sealing glass frame 1, the collecting test tube 7 is taken out from the bottom end of the sealing glass frame 1, the situation that the upper cover plate 2, the extraction column 3 and the like are frequently taken down from the top end of the sealing glass frame 1 is avoided, so that the collecting test tube 7 is conveniently and quickly taken out and replaced, the replacement efficiency is high, the situation that the solution in the extraction column 3 is spilled can be effectively avoided, the use is safe and convenient, and the solid phase extraction device in the prior art is particularly solved in the implementation mode, because the test tube of collecting the drip washing solution needs frequent change, and present solid phase extraction device will protect all take off from sealed glass frame top such as apron and extraction column most, will collect the test tube again and take out the change, it is comparatively loaded down with trivial details to change like this, and change efficiency lower, and change alone and cause easily that extraction column etc. emptys, causes consequences such as reagent spills, uses comparatively inconvenient problem.

The utility model provides a solid phase extraction device for food detection as shown in fig. 1 and 4, wherein a first fixing frame 18 is fixedly arranged at the top end of an upper cover plate 2, a plurality of first fixing grooves 19 are formed in the top end of the first fixing frame 18, and the bottom end of an extraction column 3 penetrates through the first fixing grooves 19, so that the extraction column 3 can be limited and fixed, and the fixation is firmer in the extraction process.

The implementation mode is specifically as follows: with extraction post 3 from last to down from first fixed slot 19 inside pass and be connected with connecting pipe 4 top, fixed slot 19 can carry out spacing fixed to extraction post 3, and it is fixed comparatively firm at whole extraction in-process like this.

The utility model provides a solid phase extraction device for food detection as shown in figures 2 and 8, wherein a second fixing frame 20 is fixedly arranged at the top end of a lower cover plate 6, the second fixing frame 20 is arranged inside a sealing glass frame 1, a second fixing groove 21 is arranged at the top end of the second fixing frame 20, and the bottom end of a collecting test tube 7 penetrates through the inside of the second fixing groove 21, so that the collecting test tube 7 can be limited and fixed, the fixing is firmer in the waste liquid collecting process and the replacing process, and the waste liquid can be effectively prevented from spilling.

The implementation mode is specifically as follows: the bottom that will collect test tube 7 passes inside second fixed slot 21 and makes its bottom put the inside of standing groove 8, and second fixed slot 21 can carry out spacing fixed to collecting test tube 7, makes it all fixed comparatively firm in collecting waste liquid in-process and change in-process, can effectually prevent that the waste liquid from spilling.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the utility model.

Claims

1. Solid-phase extraction device for food detection, including sealed glass frame (1), upper cover plate (2), a plurality of extraction post (3), a plurality of connecting pipe (4) and a plurality of extraction needle (5), establish on sealed glass frame (1) top upper cover plate (2), and is a plurality of extraction post (3) are established at upper cover plate (2) top, and are a plurality of connecting pipe (4) are established on upper cover plate (2) top, upper cover plate (2) bottom is passed upper cover plate (2) and is extended to upper cover plate (2) bottom, extraction post (3) bottom extends into connecting pipe (4) top and is linked together inside with connecting pipe (4), and is a plurality of extraction needle (5) are established in connecting pipe (4) bottom, connecting pipe (4) top extends into extraction needle (5) top and is linked together its characterized in that with extraction needle (5) inside: the sealing glass frame is characterized in that a lower cover plate (6) is arranged at the bottom end of the sealing glass frame (1), a plurality of collecting test tubes (7) are arranged at the top end of the lower cover plate (6), the collecting test tubes (7) are arranged inside the sealing glass frame (1), a plurality of placing grooves (8) are formed in the top end of the lower cover plate (6), the bottom ends of the collecting test tubes (7) are arranged inside the placing grooves (8), fixed side plates (9) are fixedly arranged on two sides of the sealing glass frame (1), two sides of the lower cover plate (6) are respectively contacted with the inner sides of the two fixed side plates (9), sliding grooves (10) are formed in the inner sides of the fixed side plates (9), sliding blocks (11) are arranged inside the sliding grooves (10), the inner sides of the two sliding blocks (11) are respectively and fixedly connected with two sides of the lower cover plate (6), threaded rods (12) are arranged inside the sliding grooves (10), one end of each threaded rod (12) penetrates through the top ends of the sliding blocks (11) and the fixed side plates (9) and is connected with the sliding blocks (11) through threads, the two ends of the threaded rod (12) are rotatably connected with the inner wall of the sliding chute (10) through bearings.

2. The solid-phase extraction device for food detection according to claim 1, characterized in that: one end of the threaded rod (12) is fixedly provided with a rotating handle (13), the rotating handle (13) is arranged at the top of the fixed side plate (9), and the rotating handle (13) is arranged at the bottom of the upper cover plate (2).

3. The solid-phase extraction device for food detection according to claim 1, characterized in that: an upper sealing groove (14) is formed in the bottom end of the upper cover plate (2), an extraction needle (5) is fixedly arranged inside the upper sealing groove (14), and the top end of the sealing glass frame (1) is arranged inside the upper sealing pad (15).

4. The solid-phase extraction device for food detection according to claim 1, characterized in that: lower seal groove (16) have been seted up on lower apron (6) top, establish in the standing groove (8) outside lower seal groove (16), lower seal groove (16) inside fixed lower sealing pad (17) that is equipped with, establish inside lower sealing pad (17) sealed glass frame (1) bottom.

5. The solid-phase extraction device for food detection according to claim 1, characterized in that: the top end of the upper cover plate (2) is fixedly provided with a first fixing frame (18), the top end of the first fixing frame (18) is provided with a plurality of first fixing grooves (19), and the bottom end of the extraction column (3) penetrates through the inside of the first fixing grooves (19).

6. The solid-phase extraction device for food detection according to claim 1, characterized in that: the fixed second mount (20) that is equipped with in apron (6) top down, second mount (20) are established inside sealed glass frame (1), second fixed slot (21) have been seted up on second mount (20) top, it is inside through second fixed slot (21) to collect test tube (7) bottom.

7. The solid-phase extraction device for food detection according to claim 1, characterized in that: the rear end of the sealing glass frame (1) is fixedly provided with a vacuum tube (22), one end of the vacuum tube (22) penetrates through the rear end of the sealing glass frame (1) and is communicated with the inside of the sealing glass frame (1), and a valve is fixedly arranged on the vacuum tube (22).