CN219462567U - Turbulent flow extraction device - Google Patents
Turbulent flow extraction device Download PDFInfo
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- CN219462567U CN219462567U CN202223080457.7U CN202223080457U CN219462567U CN 219462567 U CN219462567 U CN 219462567U CN 202223080457 U CN202223080457 U CN 202223080457U CN 219462567 U CN219462567 U CN 219462567U
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Abstract
The utility model relates to a turbulent flow extraction device, which comprises a first extraction pipe and a second extraction pipe which is connected with the first extraction pipe in a sealing way, wherein the second extraction pipe is provided with an opening which can be opened and closed; the first extraction tube sequentially comprises an upper turbulence section, a sample section and a lower turbulence section from top to bottom, wherein a sample is stored in the sample section, and a plurality of first sieve holes are formed in the sample section; the sample section is separated from the upper turbulence section and the lower turbulence section through an upper screen plate and a lower screen plate respectively, and a plurality of second screen holes are formed in the upper screen plate and the lower screen plate; the sample section is positioned in the second extraction tube, and the upper turbulence section and the lower turbulence section respectively extend out from the top and the bottom of the second extraction tube; the device further comprises a solvent supply device, wherein the top of the upper turbulence section and the bottom of the lower turbulence section are communicated with the solvent supply device. The utility model can make the sample and the solvent contact with repeated turbulence, and enhance repeated extraction and dissolution of the solute.
Description
Technical Field
The utility model relates to the technical field of rapid sample extraction in the aspects of grains, environment, agriculture and the like, in particular to a turbulent flow extraction device and an extraction method thereof.
Background
In the detection of samples in the aspects of traditional Chinese medicine, grain, environment, agriculture and the like, according to the research requirement, the samples need to be measured along with the functional components, biological or chemical toxins, nutrient substances and the like in the samples so as to analyze and research the accumulation, migration, conversion and the like of the functional components, the nutritional components, the biological or chemical hazardous substances and the like of the samples. In general, in sample testing and detection, generally, through steps of homogenization, extraction, purification, and detection, common extraction and purification includes solvent extraction, soxhlet extraction, solid phase extraction, liquid-liquid extraction, solid-liquid extraction, physical separation, and the like, sample pretreatment is required for sample detection, so that the sample is in a powder, liquid crude extract, semi-fluid state, and the like, and related substances in the sample need to be extracted or prepared so as to measure solutes in the sample. In the above extraction preparation method, there are often problems of low extraction efficiency, poor accuracy of extracting the target substance, more solvent usage, long operation time, subsequent complex purification, and the like, and the detection result also often causes inaccurate test values and larger test errors due to the difference of extraction and purification efficiencies.
In order to solve the above problems, for sample extraction, the contact, distribution, fluid viscosity, shearing state and the like of the sample and the extraction solvent are combined, and the release of solutes in the sample can be promoted and accelerated by adjusting the parameters. At present, the extraction process of the sample is usually carried out unidirectionally, namely, the solvent is used for eluting the sample from a single direction, in this way, the contact time of the sample and the solvent is shorter, the migration and release of the solute of the sample are slower, and the extraction efficiency is lower.
Disclosure of Invention
Aiming at the defects in the prior art, the technical problem to be solved by the utility model is to provide a turbulent flow extraction device which can lead a sample to be in repeated turbulent flow contact with a solvent, thereby enhancing repeated extraction and dissolution of solute.
In order to solve the technical problems, the utility model provides a turbulent flow extraction device, which comprises a first extraction pipe and a second extraction pipe which is connected with the first extraction pipe in a sealing way, wherein the second extraction pipe is provided with an opening which can be opened and closed; the first extraction tube sequentially comprises an upper turbulence section, a sample section and a lower turbulence section from top to bottom, wherein samples are stored in the sample section, and a plurality of first sieve holes are formed in the sample section; the inner periphery of the sample section and the inner periphery of the upper turbulence section are separated by an upper sieve plate, the inner periphery of the sample section and the inner periphery of the lower turbulence section are separated by a lower sieve plate, a plurality of second sieve holes are formed in the upper sieve plate and the lower sieve plate, and the apertures of the first sieve holes and the second sieve holes are smaller than the particle size of the sample; the sample section is positioned in the second extraction tube, and the upper turbulence section and the lower turbulence section respectively extend out from the top and the bottom of the second extraction tube; the device further comprises a solvent supply device, wherein the top of the upper turbulence section and the bottom of the lower turbulence section are communicated with the solvent supply device.
In the utility model, the sample is stored in the sample section positioned in the middle of the first extraction tube, the solvent can enter the sample section from the upper turbulence section and the lower turbulence section respectively, the flow directions of the solvents in the upper turbulence section and the lower turbulence section are opposite, and when two solvents enter the sample section at the same time, the sample and the solvents can be contacted by repeated turbulence, so that the repeated extraction and dissolution of the solute are enhanced; the extracted solution enters the second extraction tube through the first sieve holes so as to be conveniently collected through the openings for subsequent analysis.
Preferably, the top and the bottom of the second extraction tube extend into the second extraction tube to form a first connecting channel and a second connecting channel respectively, the upper turbulence section and the lower turbulence section are respectively arranged in the first connecting channel and the second connecting channel in a penetrating way, and sealing elements are arranged between the upper turbulence section and the first connecting channel and between the lower turbulence section and the second connecting channel. By adopting the design, the sealing between the first extraction pipe and the second extraction pipe can be realized, and the first extraction pipe is convenient to disassemble and assemble.
Preferably, the sealing element is in a T-shaped sleeve shape, and sequentially comprises a first pipe section and a second pipe section along the direction away from the sample section, wherein the outer diameter of the first pipe section is smaller than that of the second pipe section, and a step surface is formed at the end part, close to the first pipe section, of the second pipe section; annular protruding portions are arranged in the first connecting channel and the second connecting channel, an abutting surface is formed at one end, away from the sample section, of each protruding portion, and the step surface abuts against the abutting surface.
Preferably, the upper and lower turbulence sections are in communication with the solvent supply via first and second pump bodies, respectively. The upper turbulence section and the lower turbulence section are respectively controlled by the first pump body and the second pump body, so that the flow velocity of the upper turbulence section and the flow velocity of the lower turbulence section can be respectively regulated, and a better turbulence effect can be obtained.
Preferably, the top and the bottom of the second extraction tube are provided with the openings, and a flow dividing plate is arranged at the upper part and the lower part of the inner periphery of the second extraction tube, the flow dividing plate is arranged around the first extraction tube, a plurality of through holes are arranged on the flow dividing plate, and the sample section is positioned between the two flow dividing plates; the two openings are respectively communicated with the solvent supply device through a third pump body and a fourth pump body. By adopting the structure, the solvent can be injected into the second extraction pipe before extraction, and when the first pump body, the second pump body, the third pump body and the fourth pump body are simultaneously started during extraction, when the extraction is just started, the sample section can form primary turbulence under the action of the reverse solvent of the upper turbulence section and the lower turbulence section, and at the moment, the back pressure inside and outside the sample section is basically consistent. Over time, the extraction solution flows out to the second extraction tube, and at this time, by increasing the flow rate of the second extraction tube connecting pumps (namely the third pump body and the fourth pump body), a counter pressure difference is formed inside and outside the sample section, so that a secondary turbulence is formed inside and outside the sample section, and the dissolution efficiency of the solute is further improved.
Preferably, the top and the bottom of the sample section are detachably and fixedly connected with the upper turbulence section and the lower turbulence section respectively; the upper sieve plate and the lower sieve plate are both positioned in the sample section, and a bearing part for installing the lower sieve plate is arranged at the bottom of the sample section. The upper sieve plate and the lower sieve plate can prevent the samples in the sample section from scattering, so that the extraction process can be smoothly carried out; when in loading, the lower sieve plate is firstly placed on the bearing part, the sample is filled on the lower sieve plate, and the upper sieve plate is placed on the top of the sample after the filling is finished.
Preferably, the top of the upper turbulence section and the bottom of the lower turbulence section are both in sealing connection with a first sealing cover, a first solvent channel communicated with the first extraction pipe is arranged on the first sealing cover, and the upper turbulence section and the lower turbulence section are communicated with the solvent supply device through the corresponding first solvent channels; the two openings are respectively and hermetically connected with a second sealing cover, a second solvent channel communicated with the second extraction tube is arranged on the second sealing cover, and the two openings are communicated with the solvent supply device through the corresponding second solvent channels. The design of the first sealing cover and the second sealing cover can improve the sealing performance of the whole extraction system.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.
FIG. 1 is a schematic diagram of a turbulent extraction apparatus according to an embodiment of the present utility model;
FIG. 2 is a schematic view of a sealed connection structure of an upper turbulence section and a second extraction tube according to an embodiment of the present utility model.
Reference numerals:
1-a first extraction tube; 11-upper turbulence section; 12-sample section; 13-a lower turbulence section; 14-lower sieve plate; 15-upper sieve plate; 2-a second extraction tube; 21-a diverter plate; 22-ring cylindrical side plates; 221-a boss; 3-seals; 4-a container; 5-a first sealing cover; 6-a first pump body; 7-a second pump body; 8-a second sealing cover; 9-a third pump body; 10-fourth pump body.
Detailed Description
Here, it is to be noted that the functions, methods, and the like related to the present utility model are merely conventional adaptive applications of the prior art. The present utility model is therefore an improvement over the prior art in that the connection between hardware is essentially not a function, method itself, i.e. the present utility model, although it relates to a point of function, method, does not involve the improvement proposed for the function, method itself. The description of the function and the method of the utility model is for better explaining the utility model so as to better understand the utility model.
Embodiments of the technical scheme of the present utility model will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and thus are merely examples, and are not intended to limit the scope of the present utility model.
It is noted that unless otherwise indicated, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.
As shown in fig. 1 and 2, the present embodiment discloses a turbulent extraction apparatus including a first extraction tube 1 and a second extraction tube 2 hermetically connected to the first extraction tube 1.
The second extraction tube 2 comprises a cylindrical section in the middle, the top and bottom of which taper to form two conical sections, the end of which remote from the cylindrical section has an opening which can be opened and closed. Further, a flow dividing plate 21 is provided at the top and bottom of the cylindrical section, a plurality of through holes are provided on the flow dividing plate 21, an annular cylindrical side plate 22 is connected between the flow dividing plate 21 and the corresponding conical section, a first connecting channel and a second connecting channel are respectively formed at the inner circumferences of the upper and lower annular cylindrical side plates 22, the first connecting channel and the second connecting channel penetrate through the corresponding conical section and the flow dividing plate respectively, and furthermore, an annular protruding portion 221 is provided protruding inwards in the radial direction at one side of the inner circumference of the annular cylindrical side plate close to the cylindrical section, and an abutting face is formed at one end of the protruding portion 221 away from the cylindrical section. In this embodiment, the boss 221, the annular cylindrical side plate 22, the flow dividing plate 21, the tapered section, and the cylindrical section are integrally formed.
The first extraction tube 1 sequentially comprises an upper turbulence section 11, a sample section 12 and a lower turbulence section 13 from top to bottom, and the upper turbulence section 11, the sample section 12 and the lower turbulence section 13 are sequentially connected in a threaded manner. The sample section 12 stores a sample therein, and a plurality of first sieve holes are provided on the side of the sample section 12. The tapered setting in inner periphery bottom of sample section 12 forms the adapting portion, has placed lower sieve 14 on this adapting portion, when filling the sample, earlier places lower sieve 14 on adapting portion to fill the sample on lower sieve 14, after the sample filling is accomplished, places last sieve 15 at the top of sample, then connects sample section 12 and last turbulence section 11 and lower turbulence section 13 fixedly again, and at this moment, last sieve 15 and lower sieve 14 can separate sample and last turbulence section 11 and lower turbulence section 13 to prevent that the sample from scattering. In this embodiment, the upper screen plate 15 and the lower screen plate 14 are each provided with a plurality of second screen holes, and the diameters of the first screen holes and the second screen holes are smaller than the particle diameter of the sample, typically 5 μm, and the particle diameter of the sample is typically smaller than 100 μm so as to generate back pressure.
After the sample section 12 has been connected to the upper and lower turbulence sections 11, 13, the first extraction tube 1 is placed in the second extraction tube 2 such that the sample section 12 is located between the two flow dividing plates 21, the upper turbulence section 11 is located in the first connecting channel and the lower turbulence section 13 is located in the second connecting channel. In this embodiment, the upper turbulence section 11 and the lower turbulence section 13 are respectively fixed in the first connection channel and the second connection channel by the sealing member 3 in a sealing manner, specifically, the sealing member 3 is in a T-shaped sleeve shape, and sequentially comprises a first pipe section and a second pipe section along a direction far away from the sample section 12, wherein the outer diameter of the first pipe section is smaller than that of the second pipe section, and a step surface is formed at the end of the second pipe section, which is close to the first pipe section, and is abutted against the abutment surface of the corresponding protruding portion 221. After the first extraction tube 1 is installed, the outer circumferences of the upper turbulence section 11 and the lower turbulence section 13 are tightly abutted with the inner circumferences of the corresponding sealing pieces 3 to realize sealing fixation with the second extraction tube 2.
The present embodiment further includes a solvent supply device for injecting the extraction solvent into the first extraction tube 1 and the second extraction tube 2, the solvent supply device includes four containers 4, the containers 4 store the solvent therein, and the four containers 4 are respectively in one-to-one correspondence with the two openings of the upper turbulence section 11, the lower turbulence section 13, and the second extraction tube 2.
The upper turbulence section 11 and the lower turbulence section 13 extend from the top and the bottom of the second extraction tube 2 respectively, and the top of the upper turbulence section 11 and the bottom of the lower turbulence section 13 are connected with a first sealing cover 5 in a sealing way, a first solvent channel communicated with the first extraction tube 1 is arranged on the first sealing cover 5, the first solvent channels of the two first sealing covers 5 are communicated with corresponding containers 4 respectively through two first connecting pipelines, and a first pump body 6 and a second pump body 7 are arranged on the two first connecting pipelines respectively.
The two openings of the second extraction tube 2 are respectively and hermetically connected with a second sealing cover 8, a second solvent channel communicated with the second extraction tube 2 is arranged on the second sealing cover 8, the two second solvent channels are respectively communicated with the corresponding container 4 through two second connecting pipelines, and a third pump body 9 and a fourth pump body 10 are respectively arranged on the two second connecting pipelines.
The inner circumferences of the first sealing cover 5 and the second sealing cover 8 are respectively provided with an O-shaped sealing ring, the two first sealing covers 5 are respectively in threaded connection with the upper turbulence section 11 and the lower turbulence section 13, and the two second sealing covers 8 are respectively in threaded connection with the two openings of the second extraction tube 2. In addition, one end of the first connecting pipeline and the second connecting pipeline extending into the container 4 is connected with a filter head for filtering impurities in the solvent, and the filter head is a mobile phase large-filtering suction filter head filter of a liquid chromatograph commonly used in the field.
In this embodiment, the sample is stored in the sample section 12 located in the middle of the first extraction tube 1, the solvent can enter the sample section 12 from the upper turbulence section 11 and the lower turbulence section 13 respectively, and the flow directions of the solvents in the upper turbulence section 11 and the lower turbulence section 13 are opposite, when two solvents enter the sample section 12 at the same time, the sample and the solvents can be contacted with each other in a repeated turbulence manner, so that the repeated extraction and dissolution of the solute are enhanced; the extracted solution enters the second extraction tube 2 through the first sieve holes so as to be convenient for collecting the extracted solution through the openings for subsequent analysis.
In the actual extraction process, the third pump body 9 and the fourth pump body 10 may not be opened, at this time, the second connecting pipeline is subjected to interception treatment, after the extraction is completed, the fourth pump body 10 is removed, and the collection container is connected to the opening at the bottom of the second extraction pipe 2 to collect the extraction solution.
Of course, in practice, the third pump body 9 and the fourth pump body 10 may be opened, at this time, a certain amount of solvent may be injected into the second extraction tube 2 in advance through the third pump body 9 and the fourth pump body 10, when the extraction is started, the back pressure inside and outside the sample section 12 is consistent, only a primary turbulence is formed in the sample section 12, after the elution solution enters the second extraction tube 2 and is extracted for a certain period of time (about 1-2 min), by increasing the flow rate of the second extraction tube 2 connected with the pumps (i.e., the third pump body 9 and the fourth pump body 10), the back pressure inside the second extraction tube 2 is higher than the back pressure inside the sample section 12, at this time, a secondary turbulence is formed inside and outside the sample section 12 due to the back pressure difference inside and outside the sample section 12, so as to further improve the extraction effect and save the extraction time.
In addition, in the actual extraction process, the second extraction tube 2 can be integrally heated to further improve the extraction effect, and the heating mode can be to place the second extraction tube 2 integrally into a barrel-shaped temperature control sleeve.
The embodiment also provides an extraction method of the turbulent extraction device, which comprises the following steps:
the preparation steps are as follows: the first sealing cover 5 is communicated with the solvent supply device by utilizing a first connecting pipeline, a first pump body 6 and a second pump body 7 are respectively arranged on the two first connecting pipelines, the first pump body 6 and the second pump body 7 are opened, and the first pump body 6 and the second pump body 7 are closed after the solvent flowing out of the first sealing cover 5 is continuous fluid;
and (3) sample loading: the sample section 12 of the first extraction tube 1 is filled with a sample, and the first extraction tube 1 is arranged in the second extraction tube 2;
the extraction step: the two first sealing covers 5 are respectively connected with the upper turbulence section 11 and the lower turbulence section 13 in a sealing way, and the first pump body 6 and the second pump body 7 are opened;
collecting: after the extraction is completed, the extraction solution in the second extraction tube 2 is collected by connecting the collection container to the opening.
Further, in the loading step, the sample may be solid, semi-homogeneous, and liquid; when the sample is solid, the sample is powdered (the particle size of the powdered sample is 10-100 mu m) and then is filled into the sample section 12; when the sample is liquid or semi-homogeneous, the sample is mixed with a 30-100 μm filler to form a dry or semi-dry sample, which is then filled into the sample section 12.
In practice, the extraction method of the turbulent extraction device can also be performed according to the following steps:
the preparation steps are as follows: the first sealing cover 5 is communicated with the solvent supply device by utilizing a first connecting pipeline, a first pump body 6 and a second pump body 7 are respectively arranged on the two first connecting pipelines, the first pump body 6 and the second pump body 7 are opened, and the first pump body 6 and the second pump body 7 are closed after the solvent flowing out of the first sealing cover 5 is continuous fluid; the second sealing cover 8 is communicated with the solvent supply device by utilizing a second connecting pipeline, a third pump body 9 and a fourth pump body 10 are respectively arranged on the two second connecting pipelines, the third pump body 9 and the fourth pump body 10 are opened, and the third pump body 9 and the fourth pump body 10 are closed after the solvent flowing out of the second sealing cover 8 is continuous fluid;
and (3) sample loading: the sample section 12 of the first extraction tube 1 is filled with a sample, and the first extraction tube 1 is arranged in the second extraction tube 2;
and (3) a solvent injection step: the two second sealing covers 8 are respectively connected with the two openings in a sealing way, and the third pump body 9 and the fourth pump body 10 are opened to inject solvent into the second extraction tube 2;
the extraction step: the two first sealing covers 5 are respectively connected with the upper turbulence section 11 and the lower turbulence section 13 in a sealing way, and the first pump body 6 and the second pump body 7 are opened;
collecting: after the extraction is completed, the fourth pump body 10 connected with the bottom opening of the second extraction tube 2 is removed, and the collection container is connected to the bottom opening of the second extraction tube 2.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the spirit of the utility model, and are intended to be included within the scope of the appended claims and description.
Claims (7)
1. A turbulent extraction apparatus comprising:
the device comprises a first extraction pipe and a second extraction pipe, wherein the second extraction pipe is in sealing connection with the first extraction pipe and is provided with an opening which can be opened and closed;
the first extraction tube sequentially comprises an upper turbulence section, a sample section and a lower turbulence section from top to bottom, wherein samples are stored in the sample section, and a plurality of first sieve holes are formed in the sample section; the inner periphery of the sample section and the inner periphery of the upper turbulence section are separated by an upper sieve plate, the inner periphery of the sample section and the inner periphery of the lower turbulence section are separated by a lower sieve plate, a plurality of second sieve holes are formed in the upper sieve plate and the lower sieve plate, and the apertures of the first sieve holes and the second sieve holes are smaller than the particle size of the sample;
the sample section is positioned in the second extraction tube, and the upper turbulence section and the lower turbulence section respectively extend out from the top and the bottom of the second extraction tube;
the device further comprises a solvent supply device, wherein the top of the upper turbulence section and the bottom of the lower turbulence section are communicated with the solvent supply device.
2. The turbulent extraction device according to claim 1, wherein:
the top and the bottom of second extraction pipe respectively to second extraction intraductal extension forms first connecting channel and second connecting channel, go up the torrent section with down the torrent section wears to establish respectively in first connecting channel with the second connecting channel, just go up the torrent section with between the first connecting channel and down the torrent section with all be provided with the sealing member between the second connecting channel.
3. The turbulent extraction device according to claim 2, wherein:
the sealing element is in a T-shaped sleeve shape and sequentially comprises a first pipe section and a second pipe section along the direction far away from the sample section, wherein the outer diameter of the first pipe section is smaller than that of the second pipe section, and a step surface is formed at the end part, close to the first pipe section, of the second pipe section;
annular protruding portions are arranged in the first connecting channel and the second connecting channel, an abutting surface is formed at one end, away from the sample section, of each protruding portion, and the step surface abuts against the abutting surface.
4. The turbulent extraction device according to claim 1, wherein:
the upper turbulence section and the lower turbulence section are respectively communicated with the solvent supply device through a first pump body and a second pump body.
5. The turbulent extraction device according to claim 4, wherein:
the top and the bottom of the second extraction tube are provided with the openings, the upper part and the lower part of the inner periphery of the second extraction tube are provided with flow dividing plates, the flow dividing plates are arranged around the first extraction tube, the flow dividing plates are provided with a plurality of through holes, and the sample section is positioned between the two flow dividing plates;
the two openings are respectively communicated with the solvent supply device through a third pump body and a fourth pump body.
6. The turbulent extraction device according to claim 1, wherein:
the top and the bottom of the sample section are detachably and fixedly connected with the upper turbulence section and the lower turbulence section respectively;
the upper sieve plate and the lower sieve plate are both positioned in the sample section, and a bearing part for installing the lower sieve plate is arranged at the bottom of the sample section.
7. The turbulent extraction device according to claim 5, wherein:
the top of the upper turbulence section and the bottom of the lower turbulence section are respectively and hermetically connected with a first sealing cover, a first solvent channel communicated with the first extraction pipe is arranged on the first sealing cover, and the upper turbulence section and the lower turbulence section are communicated with the solvent supply device through the corresponding first solvent channels;
the two openings are respectively and hermetically connected with a second sealing cover, a second solvent channel communicated with the second extraction tube is arranged on the second sealing cover, and the two openings are communicated with the solvent supply device through the corresponding second solvent channels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202223080457.7U CN219462567U (en) | 2022-11-21 | 2022-11-21 | Turbulent flow extraction device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202223080457.7U CN219462567U (en) | 2022-11-21 | 2022-11-21 | Turbulent flow extraction device |
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| CN219462567U true CN219462567U (en) | 2023-08-04 |
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| CN202223080457.7U Active CN219462567U (en) | 2022-11-21 | 2022-11-21 | Turbulent flow extraction device |
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