CN213965270U - Automatic extraction device - Google Patents

Abstract

The utility model relates to an automatic extraction device, which comprises a shell, a controller, an ultrasonic extraction component, a constant volume component and a valve component, wherein the controller, the ultrasonic extraction component, the constant volume component and the valve component are respectively positioned in the shell; the ultrasonic extraction component and the constant volume component are respectively connected with the controller, and the ultrasonic extraction component is connected with the constant volume component. The utility model discloses utilize the work of controller drive valve subassembly, carry out ultrasonic extraction in extracting the ultrasonic extraction subassembly with the help of the solvent of syringe pump and valve member in with the solvent bottle, the air is impressed with the help of air pump and valve member after the extraction is accomplished for liquid after the extraction in the ultrasonic extraction subassembly carries out the constant volume in impressing the constant volume subassembly, realizes the automatic sample extraction preparation process of accomplishing, greatly promotes sample pretreatment work efficiency, save time cost and cost of labor.

Description

Automatic extraction device

Technical Field

The utility model relates to an extraction device, more specifically say and indicate automatic extraction device.

Background

Extraction, also known as solvent extraction or liquid-liquid extraction, also known as extraction, is a unit operation that separates mixtures by utilizing the different solubilities of components in the system in a solvent. That is, the method is a method of transferring a solute substance from one solvent to another solvent by utilizing the difference in solubility or partition coefficient of the substance in two solvents which are not soluble or slightly soluble with each other. The method is widely applied to chemical, metallurgical, food and other industries and is generally applied to petroleum refining industry. Although extraction is often used in chemical experiments, its operation does not cause a change in the chemical composition or a chemical reaction of the extracted substance, so the extraction operation is a physical process.

Extraction is one of the means used in organic chemistry laboratories to purify and purify compounds. The desired material can be extracted from the solid or liquid mixture by extraction. The sample preparation in the traditional gas phase, liquid phase and mass spectrometry is mainly completed manually, the time and labor are consumed, the whole extraction process is completed by manual operation, and the efficiency is low.

Therefore, a new device is needed to be designed to automatically complete the sample extraction and preparation process, greatly improve the sample pretreatment work efficiency and save the time cost and the labor cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide an automatic extraction device.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the automatic extraction device comprises a shell, a controller, an ultrasonic extraction assembly, a constant volume assembly and a valve assembly, wherein the controller, the ultrasonic extraction assembly, the constant volume assembly and the valve assembly are respectively positioned in the shell, the valve assembly is connected with the controller, and the ultrasonic extraction assembly and the constant volume assembly are respectively connected with the valve assembly; the ultrasonic extraction component and the constant volume component are respectively connected with the controller, and the ultrasonic extraction component is connected with the constant volume component.

The further technical scheme is as follows: the upper portion of casing is equipped with the through-hole, the through-hole interpolation is equipped with the solvent bottle, the solvent bottle with the valve member is connected.

The further technical scheme is as follows: the valve assembly comprises a three-way switching valve, a six-way valve and two twelve-way valves, the three-way switching valve is connected with the six-way valve, the six-way valve is respectively connected with the two twelve-way valves, and one of the twelve-way valves is connected with the ultrasonic extraction assembly; and the other twelve-way valve is connected with the constant volume assembly.

The further technical scheme is as follows: the three-way switching valve is further connected with an air pump and an injector pump, and the air pump and the injector pump are respectively connected into the shell.

The further technical scheme is as follows: the ultrasonic extraction assembly comprises a flow distribution plate, an extraction moving structure, an extraction bottle and an ultrasonic extraction tank, wherein an ultrasonic generator is arranged in the ultrasonic extraction tank and connected with the controller, the extraction moving structure is arranged in the shell and connected with the extraction moving structure, the extraction bottle is connected with the flow distribution plate, and the extraction bottle is connected with the twelve-way valve.

The further technical scheme is as follows: the extraction moving structure comprises an extraction screw rod sliding table, and the flow distribution plate is connected with the extraction screw rod sliding table.

The further technical scheme is as follows: the extraction bottle is connected with the twelve-way valve through a plug.

The further technical scheme is as follows: the constant volume subassembly includes constant volume removal structure, constant volume dish, surely hold bottle, level sensor, intermediate lamella and constant volume connecting plate respectively with constant volume removal structural connection, the constant volume dish is located on the casing, the constant volume dish pass through flexible guide bar respectively with intermediate lamella and constant volume connecting plate are connected, the constant volume is coiled and is equipped with a plurality of and be used for placing the standing groove of surely holding the bottle, level sensor connect in on the intermediate lamella, the intermediate lamella respectively with the constant volume connecting plate and the constant volume bottle is connected, the upper end of surely holding the bottle is passed the intermediate lamella, just level sensor locates one side of surely holding the bottle, the upper end of constant volume connecting plate pass through three way connection respectively with twelve way valve connection and the plug is connected.

The further technical scheme is as follows: the outside of casing is connected with the touch-sensitive screen, the touch-sensitive screen with the controller is connected.

The further technical scheme is as follows: the constant volume moving structure comprises a constant volume screw rod sliding table, and the intermediate plate and the constant volume connecting plate are respectively connected with the constant volume screw rod sliding table.

Compared with the prior art, the utility model beneficial effect be: the utility model discloses a set up the controller, the ultrasonic extraction subassembly, the constant volume subassembly, the valve member, utilize the work of controller drive valve assembly, carry out ultrasonic extraction in extracting the ultrasonic extraction subassembly with the help of the solvent of syringe pump and valve member in with the solvent bottle, the air of impressing with the help of air pump and valve member after the extraction is accomplished, make the liquid after the extraction in the ultrasonic extraction subassembly impress the constant volume and carry out the constant volume in the constant volume subassembly, realize the automatic sample extraction preparation process of accomplishing, greatly promote sample pretreatment work efficiency, save time cost and cost of labor.

The invention is further described with reference to the accompanying drawings and specific embodiments.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative effort.

Fig. 1 is a schematic perspective view of an automatic extraction apparatus according to an embodiment of the present invention;

fig. 2 is a schematic perspective view of an automatic extraction apparatus according to an embodiment of the present invention;

fig. 3 is a schematic three-dimensional structure view (door body removed) of the automatic extraction device provided in the embodiment of the present invention;

fig. 4 is a schematic three-dimensional structure diagram (with the rear baffle removed) of the automatic extraction device according to the embodiment of the present invention;

fig. 5 is a schematic view of a three-dimensional structure of an ultrasonic extraction assembly and a constant volume assembly according to an embodiment of the present invention;

fig. 6 is a schematic view of a three-dimensional structure of the ultrasonic extraction assembly and the constant volume assembly according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and the following 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. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "secured" are to be construed broadly and can, for example, be connected or detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above should not be understood to necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by one skilled in the art.

As shown in fig. 1 to 6, the automatic extraction device provided in this embodiment adopts a controller 80, a touch screen 11, a precise liquid level sensor 48, a constant volume bottle 44, and the like. The controller 80 automatically finishes the sample extraction preparation process according to the preset extraction program, and the sample pretreatment working efficiency is greatly improved.

Referring to fig. 1, the automatic extraction apparatus includes a housing 10, a controller 80, an ultrasonic extraction assembly, a constant volume assembly, and a valve assembly, wherein the controller 80, the ultrasonic extraction assembly, the constant volume assembly, and the valve assembly are respectively located in the housing 10, the valve assembly is connected to the controller 80, and the ultrasonic extraction assembly and the constant volume assembly are respectively connected to the valve assembly; the ultrasonic extraction component and the constant volume component are respectively connected with the controller 80, and the ultrasonic extraction component is connected with the constant volume component.

In this embodiment, a longitudinal baffle 16 and a transverse baffle 17 are arranged in the casing 10, the longitudinal baffle 16, the transverse baffle 17 and the casing 10 enclose to form a first space, a second space, a third space and a fourth space, wherein the front side of the casing 10 is provided with the door body 14, the rear side of the casing 10 is provided with the rear baffle 19, the first space and the second space are close to the door body 14, the third space and the fourth space are close to the rear baffle 19, the first space is located above the second space, the third space is located above the fourth space, the ultrasonic extraction assembly is located in the first space, the constant volume assembly is located in the second space, the controller 80 is located in the fourth space, the three-way valve, the air pump 70 and the injector pump 50 are located in the third space, so that the inside of the whole casing 10 is tidier.

Utilize the work of controller 80 control valve subassembly and supersound extraction subassembly, the work of constant volume subassembly, carry out the extraction of solvent by the supersound extraction subassembly, and the solvent siphon after will extracting is impressed the constant volume subassembly and is carried out the constant volume, when the liquid volume in the constant volume subassembly reaches and will go, the constant volume subassembly rises, so that personnel take, realize the automatic sample extraction preparation process that accomplishes, greatly promote sample pretreatment work efficiency, save time cost and cost of labor.

In one embodiment, referring to fig. 1 to 2, a through hole is formed above the housing 10, a solvent bottle 20 is inserted into the through hole, and the solvent bottle 20 is connected to the valve assembly.

The below of through-hole still is equipped with the limiting plate, and the lower extreme butt of solvent bottle 20 is on the limiting plate, and the limiting plate can support solvent bottle 20. The controller 80 operates by controlling the valve assembly to draw solvent from the solvent bottle 20.

Specifically, one or more groups of solvent bottles 20 store a certain amount of extraction solvent, and the extraction solvent such as acetone, n-hexane, toluene, ethyl acetate, etc. is manually filled before extraction.

In an embodiment, referring to fig. 3 and 4, the valve assembly includes a three-way switching valve 61, a six-way valve 60 and two twelve-way valves 62, the three-way switching valve 61 is connected to the six-way valve 60, the six-way valve 60 is respectively connected to the two twelve-way valves 62, and one of the twelve-way valves 62 is connected to the ultrasonic extraction assembly; another twelve-way valve 62 is connected to the volumetric assembly.

Specifically, the three-way switching valve 61 is further connected to an air pump 70 and a syringe pump 50, and the air pump 70 and the syringe pump 50 are respectively connected to the inside of the housing 10.

The three-way switching valve 61 is a 2-position three-way electromagnetic valve, the three-way switching valve 61 is provided with a south interface and a north interface, the south interface is connected with the air pump 70 and the injector pump 50, only one port can be selected at the same time through the south interface, and the north interface is connected with a central public interface of the six-way valve 60.

The six-way valve 60 has a common inlet or outlet that is connected to 6 different ports and is automatically switched by the controller 80 to select up to 6 solvents without having to disconnect and reconnect the lines.

Twelve-way valve 62 is a multi-position twelve-way selector valve having a common inlet connected to 12 different ports, and is automatically switched by controller 80 to select up to 12 solvents without having to disconnect and reconnect the lines. In this embodiment, two twelve-way valves 62 are used, and the twelve-way valves 62 can also be used to expand multiple sets of extraction solution bottles 34 or volumetric bottles 44 in cascade.

The communication bus connects each of the above channel valves to the controller 80, and the controller 80 sends/listens to the programmed channel valve addresses via the bus for program control commands.

In an embodiment, referring to fig. 5, the ultrasonic extraction assembly includes a flow distribution plate 33, an extraction moving structure, an extraction bottle 34 and an ultrasonic extraction tank 35, an ultrasonic generator is disposed in the ultrasonic extraction tank 35, the ultrasonic generator is connected to a controller 80, the extraction moving structure is mounted in the housing 10, the flow distribution plate 33 is connected to the extraction moving structure, the extraction bottle 34 is connected to the flow distribution plate 33, and the extraction bottle 34 is connected to the twelve-way valve 62.

In this embodiment, the extraction flask 34 is composed of 12 or other number of independent glass flasks or borosilicate glass flasks, two flow conduits are inserted into the lid of the extraction flask 34, and the longer flow conduit is inserted into the bottom of the flask and connected to the lower constant volume assembly. The shorter delivery tube is connected to the interface of twelve way valve 62. The covers of the 12 extraction bottles 34 are fixedly screwed on a splitter plate 33, and the splitter plate 33 can move up and down along with the extraction moving structure and is immersed in an ultrasonic extraction tank 35. After each round of extraction, 12 extraction bottles 34 are automatically lifted up and fished out of the ultrasonic extraction tank 35.

An ultrasonic generator is arranged in the ultrasonic extraction tank 35, a certain amount of common tap water is filled into the ultrasonic extraction tank 35, and 12 extraction liquid bottles are soaked in the tank during extraction. The draft tube adopts the teflon hard tube as the extraction liquid transmission pipeline, and the teflon tubular product chemical property is very stable.

In one embodiment, the extraction moving structure includes an extraction screw sliding table 31, and the diversion plate 33 is connected to the extraction screw sliding table 31. The up-and-down movement of the splitter plate 33 is realized through the extraction screw sliding table 31, and the extraction bottles 34 on the splitter plate 33 move up and down along with the splitter plate.

In one embodiment, the extraction flask 34 is connected to the twelve-way valve 62 by a plug 32.

In an embodiment, referring to fig. 6, the constant volume assembly includes a constant volume moving structure, a constant volume disc 45, a constant volume bottle 44, a liquid level sensor 48, a middle plate 47 and a constant volume connecting plate 43, the middle plate 47 and the constant volume connecting plate 43 are respectively connected to the constant volume moving structure, the constant volume disc 45 is located on the housing 10, the constant volume disc 45 is respectively connected to the middle plate 47 and the constant volume connecting plate 43 through a telescopic guide rod 46, a plurality of placing grooves for placing the constant volume bottle 44 are disposed in the constant volume disc 45, the liquid level sensor 48 is connected to the middle plate 47, the middle plate 47 is respectively connected to the constant volume connecting plate 43 and the constant volume bottle 44, the upper end of the constant volume bottle passes through the middle plate 47, and the liquid level sensor 48 is arranged at one side of the constant volume bottle 44, and the upper end of the constant volume connecting plate 43 is respectively connected with the twelve-way valve 62 and the plug 32 through the three-way joint 42.

The constant volume subassembly is the constant volume scheme that makes progress, and the degree line is in the bottleneck top of constant volume bottle 44 immediately, of course, can also adopt the mode of downward constant volume, is about to constant volume dish 45 changes the constant volume basin into, and the hot-water bath can be done in the heating to water, will decide the liquid rapid evaporation who holds in bottle 44, and the nitrogen gas of pump income also can take away the liquid that holds in bottle 44 fast surely, helps deciding the lower scale mark that liquid reduces to constant volume bottle 44 in the bottle 44 certainly.

In the present embodiment, the liquid level sensor 48 is, but not limited to, an infrared liquid level sensor 48 or an air pressure liquid level sensor 48, wherein the infrared liquid level sensor 48 is formed by a pair of infrared transmitter and receiver using infrared refraction principle, and changes the refractive index of light when there is liquid in the pipeline, and outputs a switching signal.

In the present embodiment, the volumetric flasks 44 are upward volumetric flasks and are 12 or other number of glass flasks with volumetric scales and capable of being calibrated by metering, a liquid level sensor 48 is arranged above the mouth of each volumetric flask 44, the three-way joint 42 penetrates through the liquid level sensor 48, one end of the three-way joint 42 is connected with the upper extraction flask 34, and the other end of the three-way joint is connected with the twelve-way valve 62. When the extraction liquid with the programmed volume is collected in the constant volume bottle 44, the extraction liquid level just stays in the error range near the constant volume scale mark, and the extraction constant volume process is ended.

In an embodiment, the constant volume moving structure includes a constant volume screw sliding table 41, and the intermediate plate 47 and the constant volume connecting plate 43 are respectively connected to the constant volume screw sliding table 41. The up-and-down movement of 47 and the constant volume connecting plate 43 is realized through the constant volume screw rod sliding table 41.

In this embodiment, the bottle plug and the gland of the fixed volume bottle 33 are connected to the middle plate, and the buffer spring is disposed in the gland, so that the bottle mouth of the fixed volume bottle 44 is prevented from being squeezed and cracked by the corresponding screw rod sliding table in the working process of the fixed volume screw rod sliding table 41.

The cross baffle 17 is provided with a fluid conduit 18, the fluid conduit 18 is used for the conduit to pass through, and the conduit is connected with the plug 32 and the tee joint 42.

In an embodiment, referring to fig. 1, the touch screen 11 is connected to an outer side of the housing 10, and the touch screen 11 is connected to the controller 80.

In this embodiment, a lifting limit switch 90 is disposed on the longitudinal baffle 16, the lifting limit switch 90 is connected to the controller 80, and the lifting limit switch 90 is respectively disposed at the side edges of the extraction screw rod sliding table 31 and the constant volume screw rod sliding table 41, so as to limit the lifting and lowering of the extraction screw rod sliding table 31 and the constant volume screw rod sliding table 41.

In an embodiment, referring to fig. 1, a door 14 is disposed on a front side of the housing 10, and a door handle 15 is disposed on the door 14, so that an operator can open the door 14.

In an embodiment, referring to fig. 1, the door 14 is provided with an observation window 13 for an operator to observe the internal extraction process.

In one embodiment, referring to fig. 1, a handle 12 is provided on a side of the housing 10 for facilitating carrying the entire device.

The whole automatic extraction device has the working process as follows:

the preparation of the sample and the solvent is ready, firstly, the controller 80 sends a program instruction to the three-way switching valve 61 through the bus, the three-way switching valve 61 is switched to select the injector pump 50, the six-way valve 60 is switched to select the selected solvent bottle 20, the injector pump 50 extracts a certain amount of solvent, the controller 80 drives the six-way valve 60 to select the twelve-way valve 62 for ultrasonic extraction, the program instruction of the twelve-way valve 62 for ultrasonic extraction selects an extraction liquid bottle with a specified number from the 12 extraction bottles 34, and the injector pump 50 injects the solvent with a program set volume to the extraction bottle 34 with the specified number. Repeatedly pumping the programmed volume of solvent if the syringe pump 50 is empty; repeating the step of injecting the solvent with the set volume by the injector pump 50 into the extraction bottles 34 to inject the solvent with the set volume into the remaining extraction bottles 34, and simultaneously placing 12 extraction bottles 34 into the ultrasonic extraction tank 35 by the extraction screw sliding table 31 to perform the first round of ultrasonic extraction, wherein the extraction time is preset by the program of the controller 80; after the first round of extraction is finished, the controller 80 sends a program instruction to the three-way switching valve 61 through the bus, the three-way switching valve 61 is switched to select the air pump 70, the six-way valve 60 program instruction selects the ultrasonic extraction twelve-way valve 62, and the ultrasonic extraction twelve-way valve 62 program instruction selects an extraction liquid bottle with a specified number from 12 extraction liquid bottles; the air pump 70 pumps a gas, typically air or nitrogen, under pressure into the designated extraction flask 34 to force or siphon the liquid in the extraction flask 34 into the lower volumetric flask 44 after ultrasonic extraction. After all the liquid in the extraction bottles 34 is emptied, the extraction screw rod sliding table 31 lifts 12 extraction bottles 34 from the ultrasonic extraction tank 35, the steps of extraction and liquid pressing are repeated, and multiple rounds of ultrasonic extraction are carried out; after multiple rounds of ultrasonic extraction, when the extraction liquid with the capacity set by the program is collected in the constant volume bottle 44, the liquid level of the extraction liquid just stays in the error range near the constant volume scale line, and when the liquid level sensor 48 senses the liquid level of the constant volume scale line, the extraction constant volume process is ended. The tee joint 42 and the liquid level sensor 48 are lifted up by the constant volume screw rod sliding table 41, so that a worker can take out the constant volume bottle 44 below the tee joint conveniently for subsequent experimental analysis work. If the deviation of the liquid level and the preset constant volume capacity is large, the twelve-way valve 62 connected with the constant volume assembly is selected by the program instruction of the six-way valve 60, the constant volume bottle 44 with the large deviation and the specified number is selected from the 12 constant volume bottles 44 by the program instruction of the twelve-way valve 62 of the constant volume assembly, the solvent stock solution with the compensation capacity set by the program is injected into the constant volume bottle 44 with the specified number by the injector pump 50, and the extraction constant volume process is ended until the liquid level sensor 48 senses the liquid level of the constant volume scale line and the liquid level just stays in the error range near the constant volume scale line. The volume fixing screw rod sliding table 41 lifts up 12 three-way joints 42 with liquid level sensors 48, so that workers can take out the volume fixing bottles 44 below to perform subsequent experimental analysis work conveniently.

In one embodiment, the controller 80 communicates with the touch screen 11 via a serial port or an HDMI interface; the controller 80 is communicated with the three-way switching valve 61, the twelve-way valve 62 and the six-way valve 60 by 485 buses; the IO port of the controller 80 is connected with the liquid level sensor 48 and the lifting limit switch 90; the controller 80 is connected with a driver pulse and direction IO port of the screw rod stepping motor; and a driver of the screw rod stepping motor is connected with the extraction screw rod sliding table 31 and the constant volume screw rod sliding table 41.

Controlling the valve assembly to draw the solvent through the controller 80, and shunting the solvent into the ultrasonic extraction assembly through the valve assembly for extraction; the controller 80 controls the valve assembly to extract gas to press the liquid in the ultrasonic extraction assembly into the constant volume assembly, and when the amount of the liquid in the constant volume assembly reaches the requirement, the constant volume assembly rises to allow an operator to take away the liquid in the constant volume assembly.

Foretell automatic extraction device, through setting up controller 80, the ultrasonic extraction subassembly, the constant volume subassembly, the valve member, utilize controller 80 drive valve member's work, take out in the ultrasonic extraction subassembly with the help of the solvent of syringe pump 50 and valve member in with solvent bottle 20 and carry out ultrasonic extraction, the air of impressing with the help of air pump 70 and valve member after the extraction is accomplished, make the liquid after the extraction in the ultrasonic extraction subassembly impress in the constant volume subassembly and carry out the constant volume, realize the automatic sample extraction preparation process that accomplishes, greatly promote sample pretreatment work efficiency, save time cost and cost of labor.

The technical content of the present invention is further described by the embodiments only, so that the reader can understand it more easily, but the embodiments of the present invention are not limited thereto, and any technical extension or re-creation according to the present invention is protected by the present invention. The protection scope of the present invention is subject to the claims.

Claims (10)

1. The automatic extraction device is characterized by comprising a shell, a controller, an ultrasonic extraction assembly, a constant volume assembly and a valve assembly, wherein the controller, the ultrasonic extraction assembly, the constant volume assembly and the valve assembly are respectively positioned in the shell, the valve assembly is connected with the controller, and the ultrasonic extraction assembly and the constant volume assembly are respectively connected with the valve assembly; the ultrasonic extraction component and the constant volume component are respectively connected with the controller, and the ultrasonic extraction component is connected with the constant volume component.

2. The automatic extraction device according to claim 1, wherein a through hole is arranged above the housing, a solvent bottle is inserted into the through hole, and the solvent bottle is connected with the valve assembly.

3. The automatic extraction apparatus of claim 2, wherein the valve assembly comprises a three-way switching valve, a six-way valve, and two twelve-way valves, the three-way switching valve is connected to the six-way valve, the six-way valve is respectively connected to the two twelve-way valves, one of the twelve-way valves is connected to the ultrasonic extraction assembly; and the other twelve-way valve is connected with the constant volume assembly.

4. The automatic extraction device according to claim 3, wherein the three-way switching valve is further connected with an air pump and a syringe pump, and the air pump and the syringe pump are respectively connected with the housing.

5. The automatic extraction device according to claim 3, wherein the ultrasonic extraction assembly comprises a flow distribution plate, an extraction moving structure, an extraction flask and an ultrasonic extraction tank, an ultrasonic generator is arranged in the ultrasonic extraction tank, the ultrasonic generator is connected with the controller, the extraction moving structure is installed in the housing, the flow distribution plate is connected with the extraction moving structure, the extraction flask is connected with the flow distribution plate, and the extraction flask is connected with the twelve-way valve.

6. The automatic extraction device of claim 5, wherein the extraction moving structure comprises an extraction screw sliding table, and the splitter plate is connected with the extraction screw sliding table.

7. The automatic extraction device of claim 6, wherein the extraction flask is connected to the twelve-way valve by a plug.

8. The automatic extraction device according to claim 7, wherein the constant volume component comprises a constant volume moving structure, a constant volume disc, a constant volume bottle, a liquid level sensor, an intermediate plate and a constant volume connecting plate, the intermediate plate and the constant volume connecting plate are respectively connected with the constant volume moving structure, the constant volume disc is positioned on the shell, the constant volume disc is respectively connected with the intermediate plate and the constant volume connecting plate through a telescopic guide rod, a plurality of placing grooves for placing constant volume bottles are arranged in the constant volume disc, the liquid level sensor is connected on the intermediate plate, the intermediate plate is respectively connected with the constant volume connecting plate and the constant volume bottle, the upper end of the constant volume bottle passes through the intermediate plate, and the liquid level sensor is arranged on one side of the constant volume bottle, and the upper end of the constant volume connecting plate is respectively connected with the twelve-way valve and the plug through a three-way joint.

9. The automatic extraction device of claim 1, wherein a touch screen is connected to an outside of the housing, and the touch screen is connected to the controller.

10. The automatic extraction device of claim 8, wherein the constant volume moving structure comprises a constant volume screw rod sliding table, and the intermediate plate and the constant volume connecting plate are respectively connected with the constant volume screw rod sliding table.

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