CN213790079U - Green solid phase extraction device - Google Patents
Green solid phase extraction device Download PDFInfo
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- CN213790079U CN213790079U CN202022885296.3U CN202022885296U CN213790079U CN 213790079 U CN213790079 U CN 213790079U CN 202022885296 U CN202022885296 U CN 202022885296U CN 213790079 U CN213790079 U CN 213790079U
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- solid phase
- fixedly connected
- phase extraction
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- control valve
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- 230000000694 effects Effects 0.000 claims abstract description 14
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- 238000002203 pretreatment Methods 0.000 description 6
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- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
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Abstract
The utility model discloses a green solid phase extraction device relates to extraction equipment technical field, specifically is a green solid phase extraction device, the power distribution box comprises a box body, the top of box is provided with the apron, sealed lasso has been cup jointed in the inside activity of apron, the inside activity of sealed lasso has cup jointed the control valve, the general post of bottom fixedly connected with of control valve connects, the fixed sample cell that has cup jointed in bottom that general post connects, the receiving flask has been placed to the bottom of sample cell, the fixed cylinder that has cup jointed in top of control valve, the top fixedly connected with support frame of box. This green solid phase extraction device through setting up sealed lasso in the inside of apron, when will extracting new material, is carrying out the in-process of changing to the control valve, can avoid taking place to contact between control valve and the apron, prevents that the material on the control valve from being stained with on the apron, only need take off the apron wash can, need not dismantle whole apron and wash.
Description
Technical Field
The utility model relates to an extraction equipment technical field specifically is a green solid phase extraction device.
Background
The pre-treatment process generally comprises: collecting and preparing a sample, extracting a target object, purifying, concentrating and the like. The most common extraction solvents reported in the literature are acetonitrile, methanol, ethyl acetate, and other organic solvents, and the most common purification steps are liquid-liquid partition followed by column chromatography or solid phase extraction column purification. According to the national standard gas chromatography-mass spectrometry for measuring the residual quantity of 475 pesticides and related chemicals in cereals (GB 23200.9-2016), a pretreatment method for samples such as barley, wheat, oat, rice and the like is also specified, and the pretreatment method mainly adopts the pretreatment methods of organic solvent circulation extraction, repeated purification of various solid phase extraction columns and concentration. Although the method is widely applied in most high-precision laboratories, the method is relatively complicated to operate, and a solid-phase extraction column needs to be continuously used in the purification step, which may bring certain negative effects on the accurate detection of the target analyte in the sample; the solid phase extraction column adopted in the method is a commodity column, and products provided by different manufacturers have certain difference in performance and lack of uniformity, so that the difference between detection results is caused; in addition, toxic and harmful organic reagents such as toluene, acetone, dichloromethane and the like are required to be used for extracting and purifying samples in the experimental process, and the method has serious threats to the health and environmental safety of operators. The defects possibly have certain limitation on the quality monitoring and risk monitoring of grain products of common production enterprises; meanwhile, for complex products such as corn extract, millet extract, beans and the like, the effect of the solid phase extraction column pretreatment method is still insufficient; interference components in the sample are very complex, the types of fillers adopted by the commercial column are limited, the function is single, the pretreatment requirement on the complex sample is difficult to meet, the sample purification effect can be improved only by passively adopting a mode of serially connecting a plurality of solid-phase extraction columns, and the problems of poor repeatability, low recovery rate and high detection cost are caused. In addition to the methods, the current domestic and foreign researches on food sample pretreatment methods also include various methods such as liquid-liquid extraction (LLE), solid-phase extraction (SPE), solid-phase microextraction (SPME), Accelerated Solvent Extraction (ASE), microwave-assisted extraction (MAE), matrix dispersion and solid-phase extraction, and the like. The matrix dispersion solid phase extraction (MSPD) technology is a novel sample pretreatment technology developed based on the Solid Phase Extraction (SPE) technology, and the method can meet the requirement of completing the sample extraction and purification steps in one step and simplify the sample pretreatment process. At present, the method is widely applied to analytical chemistry, materials such as C18 and PSA are commonly used as adsorbents, but in the face of a wide variety of samples, the types of the adsorbents applied to the MSPD are still quite limited, the functions are single, the cost of the materials is still high, and the practical application of the MSPD method is limited.
Low co-solvents (DESs) are a new class of green solvents, which are generally composed of a stoichiometric ratio of Hydrogen Bond Acceptor (HBA) and Hydrogen Bond Donor (HBD). The method is mainly characterized in that the preparation of the DESs is simple and the types are rich as follows 1. HBA is usually composed of choline compounds and quaternary ammonium salt compounds, HBD is usually composed of alcohols, organic acid and alkali and certain inorganic compounds, different kinds of DESs can be obtained according to different synthetic schemes, and different DESs have different physical and chemical properties, so that the application of the DESs in various fields is more flexible. 2. The DESs are environment-friendly and low in cost. Compared with other organic reagents for extraction, the DESS reagent is not easy to volatilize and does not harm the environment and human bodies. 3. The DESS has the characteristics of low toxicity, degradability, no volatility, high viscosity, good conductivity, excellent solubility, low price and the like, is considered as a green solvent, is small in dosage in an experiment, simple to operate, free of too many transfer purification processes and low in target loss, and therefore research on the DESS is widely regarded by various fields. At present, related researches utilize the unique properties of DESS to realize enrichment detection of heavy metals, pesticide residues and toxin substances in a complex matrix, Khezeli and the like establish a detection method for determining the contents of ferulic acid, caffeine and cinnamic acid in an oil sample by an ultrasonic-assisted liquid-liquid microextraction (LLME) method based on DESS technology, and also provide a detection method for extracting benzene, toluene, ethylbenzene and seven polycyclic aromatic hydrocarbons in water by an emulsion-liquid microextraction method based on DESS technology. Habibi et al used DESs as solvents to digest biological samples and successfully determined the content of metallic elements in the biological samples using Flame Atomic Absorption Spectroscopy (FAAS). The research shows that the DESs are used as extraction media, so that the toxic organic solvent is avoided, and the target components in the complex matrix are effectively extracted. Since the research of the DESS is just started, the application of the DESS in a sample pretreatment technology is yet to be researched, and the detection method of pesticide residues in cereal grains by the MSPD technology based on the DESS is not yet reported.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art, the utility model provides a green solid phase extraction device has solved the problem of proposing in the above-mentioned background art.
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a green solid phase extraction device, includes the box, the top of box is provided with the apron, the inside activity of apron has cup jointed sealed lasso, the inside activity of sealed lasso has cup jointed the control valve, the bottom fixedly connected with general post of control valve connects, the fixed sample cell that has cup jointed in bottom that connects of general post, the receiving flask has been placed to the bottom of sample cell, the fixed cylinder that has cup jointed in top of control valve, the top fixedly connected with support frame of box, the top fixed mounting of support frame has servo motor, servo motor's bottom fixedly connected with electric telescopic handle, electric telescopic handle's bottom fixedly connected with push pedal.
Optionally, the left side fixedly connected with negative pressure bottle of box, the left side fixedly connected with negative pressure aspiration pump of negative pressure bottle, the side fixedly connected with manometer of box through setting up negative pressure aspiration pump, conveniently takes the inside air of box out, makes the inside vacuum state that is in of box, avoids causing the pollution to the extract.
Optionally, a supporting plate is arranged inside the box body, the supporting plate is divided into an upper layer and a lower layer, a placing hole is formed in the supporting plate, the sample tube and the collecting bottle are placed inside the supporting plate, the supporting plate is arranged inside the box body, and the sample tube and the collecting bottle are fixed by the supporting plate, so that the stability of the sample tube and the collecting bottle is kept, and the sample tube and the collecting bottle are prevented from moving in the extraction process.
Optionally, a piston rod is movably sleeved inside the needle cylinder, the top of the piston rod extends to the bottom of the push plate, and the number of the needle cylinders is five and the needle cylinders are distributed side by side.
Optionally, electric telescopic handle is including the casing, the lead screw has been cup jointed in the inside activity of casing, the movable rod has been cup jointed to the bottom screw thread of lead screw, the movable rod activity is cup jointed in the bottom of casing, drives the lead screw through servo motor and rotates, makes the movable rod reciprocate along the lead screw, and the push pedal that promotes that can the uniform velocity extrudees the piston rod.
Optionally, a limiting groove is formed in the outer portion of the movable rod, a limiting block is fixedly connected to the bottom of the shell, the limiting block is clamped inside the limiting groove, the limiting groove and the limiting block are matched for use, the limiting block is used for limiting the limiting groove, and the movable rod can be prevented from rotating along with the lead screw.
The utility model provides a green solid phase extraction device possesses following beneficial effect:
1. this green solid phase extraction device, through setting up sealed lasso in the inside of apron, when extracting new material, in-process changing the control valve, can avoid taking place the contact between control valve and the apron, prevent that the material on the control valve is stained with and attaches on the apron, only need take off the apron wash can, need not dismantle whole apron and wash, it rotates to drive the lead screw through servo motor, make the movable rod reciprocate along the lead screw, the promotion push pedal that can the uniform velocity extrudees the piston rod, the speed of convenient control extraction, the quality of extraction has been guaranteed.
2. This green solid phase extraction device, outside through at the movable rod sets up the spacing groove, it is spacing to utilize the stopper to carry out the spacing groove, can avoid the movable rod to rotate along with the lead screw, make the movable rod only can reciprocate, the stability of movable rod operation has been guaranteed, bottom through at electric telescopic handle sets up the push pedal, the push pedal can extrude a plurality of piston rods simultaneously, guarantee that multiunit extraction component goes on in step, the efficiency of extraction has been improved, the rate and the time of extraction are the same between each component simultaneously, can reduce the error between each component.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic sectional view of the present invention;
fig. 3 is a schematic structural view of the electric telescopic rod of the present invention.
In the figure: 1. a box body; 2. a negative pressure bottle; 3. a negative pressure air pump; 4. a pressure gauge; 5. a cover plate; 6. sealing the ferrule; 7. a control valve; 8. a universal column joint; 9. a sample tube; 10. a collection bottle; 11. a support plate; 12. a needle cylinder; 13. a piston rod; 14. a support frame; 15. a servo motor; 16. an electric telescopic rod; 161. a housing; 162. a lead screw; 163. a movable rod; 164. a limiting groove; 165. a limiting block; 17. a push plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1 to 3, the present invention provides a technical solution: a green solid phase extraction device comprises a box body 1, a negative pressure bottle 2 is fixedly connected to the left side of the box body 1, a negative pressure air pump 3 is fixedly connected to the left side of the negative pressure bottle 2, the type of the negative pressure air pump 3 is OVP-30, a pressure gauge 4 is fixedly connected to the side of the box body 1, a cover plate 5 is arranged at the top of the box body 1, a sealing ring 6 is movably sleeved inside the cover plate 5, the sealing ring 6 is arranged inside the cover plate 5, when a new substance is to be extracted, in the process of replacing a control valve 7, the contact between the control valve 7 and the cover plate 5 can be avoided, the substance on the control valve 7 is prevented from being attached to the cover plate 5, only the cover plate 5 needs to be taken down for cleaning, the whole cover plate 5 does not need to be detached for cleaning, the control valve 7 is movably sleeved inside the sealing ring 6, a universal column joint 8 is fixedly connected to the bottom of the control valve 7, the bottom of the universal column joint 8 is fixedly sleeved with a sample tube 9, the bottom of the sample tube 9 is provided with a collecting bottle 10, the interior of the box body 1 is provided with a supporting plate 11, the supporting plate 11 has an upper layer and a lower layer, the interior of the supporting plate 11 is provided with a placing hole, the sample tube 9 and the collecting bottle 10 are both placed in the interior of the supporting plate 11, the sample tube 9 and the collecting bottle 10 are fixed by utilizing the bottom of the supporting plate 11 through the supporting plate 11 arranged in the interior of the box body 1, which is beneficial to maintaining the stability of the sample tube 9 and the collecting bottle 10 and avoiding the movement of the sample tube 9 and the collecting bottle 10 in the extraction process, the top of the control valve 7 is fixedly sleeved with a needle cylinder 12, the interior of the needle cylinder 12 is movably sleeved with a piston rod 13, the top of the piston rod 13 extends to the bottom of the push plate 17, the number of the needle cylinders 12 is five and is distributed side by side, the top of the box body 1 is fixedly connected with a supporting frame 14, the top of the supporting frame 14 is fixedly installed with a servo motor 15, the model of the servo motor 15 is D110M-060030C-E, the bottom of the servo motor 15 is fixedly connected with an electric telescopic rod 16, the screw 162 is driven to rotate by the servo motor 15, the movable rod 163 moves up and down along the screw 162, the push plate 17 can be pushed at a constant speed to extrude the piston rod 13, the extraction speed is conveniently controlled, and the extraction quality is ensured, the electric telescopic rod 16 comprises a shell 161, the screw 162 is movably sleeved in the shell 161, the movable rod 163 is sleeved on the bottom of the screw 162 in a threaded manner, the movable rod 163 is movably sleeved at the bottom of the shell 161, the limiting groove 164 is arranged outside the movable rod 163, the limiting groove 164 is limited by the limiting block 165, the movable rod 163 can be prevented from rotating along with the screw 162, the movable rod 163 can only move up and down, the operation stability of the movable rod 163 is ensured, the limiting groove 164 is arranged outside the movable rod 163, the bottom fixedly connected with stopper 165 of casing 161, stopper 165 joint is in the inside of spacing groove 164, set up push pedal 17 through the bottom at electric telescopic handle 16, push pedal 17 can extrude a plurality of piston rods 13 simultaneously, guarantee that the multiunit extraction component goes on in step, improved the efficiency of extraction, the rate and the time of extraction are the same between each component simultaneously, can reduce the error between each component, electric telescopic handle 16's bottom fixedly connected with push pedal 17.
In summary, when the green solid phase extraction apparatus is used, a sample to be extracted is placed in the sample tube 9, then the universal column connector 8, the control valve 7 and the syringe 12 are connected, air inside the box body 1 is pumped out through the negative pressure air pump 3, so that the inside of the box body 1 is in a vacuum state, and then the servo motor 15 drives the screw rod 162 to rotate, so that the movable rod 163 moves downward. And the movable rod 163 pushes the push plate 17 to move downwards to extrude the piston rod 13, so as to extract the sample in the sample tube 9.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. The utility model provides a green solid phase extraction device, includes box (1), its characterized in that: the top of box (1) is provided with apron (5), the inside activity of apron (5) has cup jointed sealed lasso (6), the inside activity of sealed lasso (6) has cup jointed control valve (7), the bottom fixedly connected with general post of control valve (7) connects (8), the bottom of general post connects (8) is fixed to have cup jointed sample cell (9), receiving flask (10) have been placed to the bottom of sample cell (9), the top of control valve (7) is fixed to have cup jointed cylinder (12), the top fixedly connected with support frame (14) of box (1), the top fixed mounting of support frame (14) has servo motor (15), the bottom fixedly connected with electric telescopic handle (16) of servo motor (15), the bottom fixedly connected with push pedal (17) of electric telescopic handle (16).
2. The green solid phase extraction apparatus of claim 1, wherein: the left side fixedly connected with negative pressure bottle (2) of box (1), the left side fixedly connected with negative pressure aspiration pump (3) of negative pressure bottle (2), there is side fixedly connected with manometer (4) of box (1).
3. The green solid phase extraction apparatus of claim 1, wherein: the novel sample collection box is characterized in that a supporting plate (11) is arranged inside the box body (1), the supporting plate (11) is provided with an upper layer and a lower layer, a placing hole is formed in the supporting plate (11), and the sample tube (9) and the collection bottle (10) are both placed in the supporting plate (11).
4. The green solid phase extraction apparatus of claim 1, wherein: piston rod (13) have been cup jointed in the inside activity of cylinder (12), the top of piston rod (13) extends to the bottom of push pedal (17), the quantity of cylinder (12) has five and distributes side by side.
5. The green solid phase extraction apparatus of claim 1, wherein: electric telescopic handle (16) including casing (161), lead screw (162) have been cup jointed in the inside activity of casing (161), the bottom screw thread of lead screw (162) has cup jointed movable rod (163), movable rod (163) activity cup joints the bottom at casing (161).
6. A green solid phase extraction apparatus according to claim 5, wherein: spacing groove (164) have been seted up to the outside of movable rod (163), the bottom fixedly connected with stopper (165) of casing (161), stopper (165) joint is in the inside of spacing groove (164).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022885296.3U CN213790079U (en) | 2020-12-04 | 2020-12-04 | Green solid phase extraction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022885296.3U CN213790079U (en) | 2020-12-04 | 2020-12-04 | Green solid phase extraction device |
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| Publication Number | Publication Date |
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| CN213790079U true CN213790079U (en) | 2021-07-27 |
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| CN202022885296.3U Expired - Fee Related CN213790079U (en) | 2020-12-04 | 2020-12-04 | Green solid phase extraction device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114377427A (en) * | 2021-12-16 | 2022-04-22 | 重庆中烟工业有限责任公司 | A extraction device for cigarette detects |
| WO2023115930A1 (en) * | 2021-12-23 | 2023-06-29 | 深圳市易瑞生物技术股份有限公司 | Automated column chromatography device for solid-phase extraction |
-
2020
- 2020-12-04 CN CN202022885296.3U patent/CN213790079U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114377427A (en) * | 2021-12-16 | 2022-04-22 | 重庆中烟工业有限责任公司 | A extraction device for cigarette detects |
| CN114377427B (en) * | 2021-12-16 | 2024-04-19 | 重庆中烟工业有限责任公司 | Extraction device for cigarette detection |
| WO2023115930A1 (en) * | 2021-12-23 | 2023-06-29 | 深圳市易瑞生物技术股份有限公司 | Automated column chromatography device for solid-phase extraction |
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