CN216062114U

CN216062114U - Automatic extraction device

Info

Publication number: CN216062114U
Application number: CN202122508814.4U
Authority: CN
Inventors: 肖宏霞
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-10-18
Filing date: 2021-10-18
Publication date: 2022-03-18
Anticipated expiration: 2031-10-18

Abstract

The utility model provides an automatic extraction device. The automatic extraction device comprises a solvent bottle, an extraction mechanism, an injection mechanism, an ultrasonic mechanism, a constant volume mechanism, a transfer mechanism and a controller. The extraction mechanism comprises at least one extraction bottle; the injection mechanism is arranged between the solvent bottle and the extraction mechanism and used for pumping the extraction solvent in the solvent bottle and injecting the extraction solvent into the extraction bottle; the ultrasonic mechanism is provided with a containing space for containing at least part of the extraction bottle and is used for carrying out ultrasonic treatment on the sample and the extraction solvent in the extraction bottle; the constant volume mechanism comprises a constant volume bottle arranged corresponding to the extraction bottle; the transfer mechanism is used for transferring the extraction bottle to the corresponding constant volume bottle so as to pour the extraction liquid into the constant volume bottle; the controller is simultaneously electrically connected with the injection mechanism, the ultrasonic mechanism, the constant volume mechanism and the transfer mechanism.

Description

Automatic extraction device

Technical Field

The utility model relates to the technical field of extraction, in particular to an automatic extraction device.

Background

Extraction refers to the process of redistribution of solute in one phase, or in two phases, after two completely or partially immiscible phases have been brought into contact, by physical or chemical action of the solute in the other phase. Extraction is one of the common methods used to extract or purify organic compounds in organic chemistry experiments. Extraction can be used to extract the desired material from a solid or liquid mixture. Organic chemistry laboratories often employ extraction to purify and purify compounds, extracting desired substances from solid or liquid mixtures. The traditional gas phase, liquid phase and mass spectrometry mainly adopt extraction means for sample preparation, and the traditional extraction process mainly depends on manual work to finish, so that the labor cost is higher.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an automatic extraction device to solve the problem that manual extraction is adopted in the prior art, so that the labor cost is high.

In order to solve the above technical problems, the present invention provides an automatic extraction apparatus, comprising:

a solvent bottle for storing an extraction solvent;

the extraction mechanism comprises at least one extraction bottle, and the extraction bottle is used for storing samples;

the injection mechanism is arranged between the solvent bottle and the extraction mechanism and used for pumping the extraction solvent in the solvent bottle and injecting the extraction solvent into the extraction bottle;

an ultrasonic mechanism having a receiving space to receive at least a portion of the extraction flask for ultrasonically oscillating the sample and the extraction solvent in the extraction flask;

the constant volume mechanism comprises a constant volume bottle arranged corresponding to the extraction bottle, and the constant volume bottle is used for receiving the extraction liquid in the extraction bottle and receiving the extraction solvent for constant volume;

the transfer mechanism is used for transferring the extraction bottles to the corresponding volumetric flasks to pour the extraction liquid into the volumetric flasks;

and the controller is simultaneously electrically connected with the injection mechanism, the ultrasonic mechanism, the constant volume mechanism and the transfer mechanism.

In one embodiment, the injection mechanism comprises:

a syringe pump communicating with the inside of the solvent bottle to pump the extraction solvent outward;

the output pipeline is connected with the outlet of the injection pump;

the injection head is arranged at one end of the output pipeline, which is opposite to the injection pump, so as to add the extraction solvent into the extraction bottle;

the transfer mechanism is used for grasping the injection head and moving the injection head to the extraction bottle, so that the injection head extends into the extraction bottle to inject the extraction solvent.

In one embodiment, the syringe pump is driven by a stepper motor.

In one embodiment, the extraction mechanism comprises an extraction flask holder for supporting the extraction flask, the extraction flask holder is located in the receiving space of the ultrasonic mechanism, and the bottom of the extraction flask is located in the receiving space.

In one embodiment, the constant volume mechanism comprises a constant volume bottle bracket and a constant volume piece, wherein the constant volume bottle bracket is used for supporting the constant volume bottle;

the volume fixing piece is located between the volume fixing bottle support and the ultrasonic mechanism, the volume fixing piece is used for detecting the amount of the extraction liquid in the volume fixing bottle, and the volume fixing piece is electrically connected with the controller.

In one embodiment, the constant volume part comprises a support table and a weighing sensor and/or a liquid level photoelectric sensor which are arranged on the support table and electrically connected with the controller, the support table is used for supporting the constant volume bottle, and the weighing sensor and the liquid level photoelectric sensor are both used for detecting the amount of the extraction liquid in the constant volume bottle on the support table.

In one embodiment, the transfer mechanism includes a multi-axis robot arm that can be opened and closed to perform gripping, and a robot arm provided on the multi-axis robot arm that can move in a plurality of directions.

In one embodiment, the multi-axis robotic arm is movable back and forth between the injection mechanism, the ultrasonic mechanism, and the volumetric mechanism;

the multi-axis mechanical arm can rotate 360 degrees.

In one embodiment, the ultrasonic mechanism is located between the injection mechanism and the volumetric mechanism.

According to the technical scheme, the utility model has the advantages and positive effects that:

the automatic extraction device disclosed by the utility model adopts the transfer mechanism, the matched injection mechanism, the ultrasonic mechanism and the constant volume mechanism to realize full-automatic working processes of injection of an extraction solvent, ultrasonic oscillation, extraction liquid transfer, constant volume and the like, so that the extraction efficiency is greatly improved. And the procedures of injection of the extraction solvent, transfer of the extraction liquid, constant volume of the constant volume bottle and the like are performed, the automation degree is high, and the labor cost is reduced. The controller controls each operation, so that the consistency in the extraction process is higher.

Drawings

FIG. 1 is a schematic structural diagram of an automatic extraction apparatus according to an embodiment of the present invention.

FIG. 2 is a schematic structural view of the container of the present invention.

FIG. 3 is a schematic flow chart of the automatic extraction apparatus of the present invention.

FIG. 4 is a schematic diagram of the automatic extraction apparatus of the present invention during extraction.

The reference numerals are explained below: 1. an automatic extraction device; 11. a solvent bottle; 12. an injection mechanism; 121. an injection pump; 122. an injection head; 13. an extraction mechanism; 131. an extraction bottle; 132. an extraction flask bracket; 14. an ultrasonic mechanism; 15. a constant volume mechanism; 151. a fixed volume bottle; 152. a constant volume bottle holder; 153. a volume-fixing piece; 1531. a support table; 1532. a weighing sensor; 1533. a liquid level photoelectric sensor; 16. a transfer mechanism; 161. a multi-axis robotic arm; 162. a manipulator; 17. and a controller.

Detailed Description

Exemplary embodiments that embody features and advantages of the utility model are described in detail below in the specification. It is to be understood that the utility model is capable of other embodiments and that various changes in form and details may be made therein without departing from the scope of the utility model and the description and drawings are to be regarded as illustrative in nature and not as restrictive.

For further explanation of the principles and construction of the present invention, reference will now be made in detail to the preferred embodiments of the present invention, which are illustrated in the accompanying drawings.

The utility model provides an automatic extraction device which is high in automation degree and low in labor cost. And the automatic extraction device has high efficiency and high consistency.

The automatic extraction device is suitable for solid-liquid extraction and can be used for sample preparation in gas phase, liquid phase and mass spectrometry in an organic chemistry laboratory.

Referring to fig. 1, the automatic extraction apparatus 1 includes a solvent bottle 11, an injection mechanism 12, an extraction mechanism 13, an ultrasonic mechanism 14, a constant volume mechanism 15, a transfer mechanism 16, and a controller 17. Specifically, this automatic extraction device 1 is through solvent bottle 11 splendid attire extraction solvent, and extraction mechanism 13 splendid attire sample to be handled, and through the cooperation of transfer mechanism 16 and injection mechanism 12 with extract solvent injection to extraction mechanism 13 in, ultrasonic mechanism 14 carries out ultrasonic vibration and obtains the extract to extraction mechanism 13, pours the extract in extraction mechanism 13 to constant volume mechanism 15 in through transfer mechanism 16, then through the cooperation of transfer mechanism 16 and injection mechanism 12 with extract solvent injection to constant volume mechanism in order to carry out the constant volume. The above-described structure will be specifically described below.

The solvent bottle 11 is used for storing an extraction solvent. The extraction solvent is, for example, acetone, n-hexane, toluene, ethyl acetate, etc.

The injection mechanism 12 is disposed downstream of the solvent bottle 11 and communicates with the inside of the solvent bottle 11 to pump the extraction solvent in the solvent bottle 11 outward. The injection mechanism 12 may be disposed on any side of the solvent bottle 11, specifically according to actual requirements.

Specifically, the injection mechanism 12 includes an input line, a syringe pump 121, an output line, and an injector head 122.

One end of the input pipe communicates with the inside of the solvent bottle 11, and the other end communicates with the inlet of the syringe pump 121.

The inlet of the syringe pump 121 is connected to the input line and is communicated with the inside of the solvent bottle 11, so as to pump the extraction solvent in the solvent bottle 11 to the outside. In this embodiment, the injection pump 121 is controlled by a stepping motor, so that the precision of pumping the extraction solvent from the solvent bottle 11 into the injection pump 121 and the precision of pumping the extraction solvent out of the injection pump 121 are improved.

One end of the output line is connected to the outlet of the syringe pump 121.

The injection head 122 is disposed at an end of the output line opposite to the injection pump 121 to deliver the extraction solvent to the outside. Wherein, the bore of the injection head 122 is gradually reduced along the self axial direction and the direction far away from the output pipeline.

Specifically, the input pipeline and the output pipeline are both Teflon pipes. The Teflon pipe is a special pipe prepared by extruding and sintering a polytetrafluoroethylene material, and then drying, sintering at high temperature, shaping and the like.

The injection principle of the injection mechanism 12 is: the extraction solvent in the solvent bottle 11 is pumped by the syringe pump 121 and is sent out through the injection head 122.

Wherein, the injection mechanism 12 controls the flow rate and flow rate of the extraction solvent delivered out from the injection head 122 by the injection pump 121.

The extraction mechanism 13 is disposed downstream of the injection mechanism 12, i.e., the injection mechanism 12 is located between the solvent bottle 11 and the extraction mechanism 13.

The extraction mechanism 13 includes at least one extraction flask 131 and an extraction flask holder 132 supporting the extraction flask 131. In this embodiment, the number of the extraction bottles 131 is plural. Specifically, the extraction bottles 131 are eighteen.

The extraction flask 131 is used to hold a sample to be extracted. Wherein the sample is a solid. In this embodiment, the extraction flask 131 is a glass flask or a borosilicate glass flask.

The extraction flask holder 132 is used to support the extraction flask 131. In this embodiment, the extraction flask holder 132 supports a plurality of extraction flasks 131 at the same time, and limits the position of each extraction flask 131. Specifically, when the extraction flask holder 132 supports the extraction flasks 131, the extraction flasks 131 are arranged in a 2 × 9 array.

Further, the extraction flask holder 132 exposes the lower portion of each extraction flask 131 to the outside.

Illustratively, the extraction flask holder 132 includes a bottom plate, side plates standing on both ends of the bottom plate, and a top plate located above the bottom plate. The both ends of roof are connected with both sides board respectively, and have seted up a plurality of via holes on the roof, and each via hole is used for supplying extraction bottle 131 to pass through.

Furthermore, a plurality of positioning grooves are formed in the top of the bottom plate, and the positioning grooves and the through holes are arranged in a one-to-one correspondence mode. The positioning groove is used for accommodating the bottom of the extraction flask 131.

The ultrasonic mechanism 14 has a receiving space for receiving at least a portion of the extraction flask 131 for ultrasonically vibrating the sample and the extraction solvent in the extraction flask 131. Wherein, the liquid in the extraction flask 131 after ultrasonic oscillation is the extraction liquid.

Specifically, the extraction mechanism 13 is placed in the receiving space, and the top of the extraction flask 131 is upward beyond the top of the ultrasonic mechanism 14.

The accommodating space of the ultrasonic mechanism 14 can accommodate a plurality of extraction bottles 131 at the same time, and further perform ultrasonic oscillation on samples in the plurality of extraction bottles 131 at the same time.

In this embodiment, the ultrasonic mechanism 14 is an ultrasonic oscillator. The ultrasonic oscillator is filled with a proper amount of water, and the extraction flask 131 immersed in water can be subjected to ultrasonic oscillation operation.

The constant volume mechanism 15 includes a constant volume bottle 151 corresponding to the extraction bottle 131, a constant volume bottle holder 152 supporting the constant volume bottle 151, and a constant volume member 153.

The volumetric flask 151 is used for containing and storing the extracted liquid. In this embodiment, the number of the fixed volume bottles 151 is plural. The number of the extraction bottles 131 is eighteen, and correspondingly, the number of the volume fixing bottles 151 is eighteen. In this embodiment, the constant volume bottle 151 is a glass bottle or a borosilicate glass bottle.

The volumetric flask holder 152 is used for supporting the volumetric flask 151. In this embodiment, the constant volume bottle holder 152 simultaneously supports a plurality of constant volume bottles 151 and limits the respective constant volume bottles 151. The structure of the constant volume bottle holder 152 may be the same as that of the extraction bottle holder 132, and is not described herein again.

In other embodiments, the specific structure of the volumetric flask holder 152 may be specifically configured according to the shape of the volumetric flask 151.

The containment part 153 includes a support 1531 and a load cell 1532 and/or a level photoelectric sensor 1533. That is, the constant volume part 153 includes a support table 1531 and a load cell 1532, or the constant volume part 153 includes a support table 1531 and a liquid level photoelectric sensor 1533, or the constant volume part 153 includes a support table 1531, a load cell 1532, and a liquid level photoelectric sensor 1533.

Referring to fig. 2, in the present embodiment, the constant volume device 153 includes a support platform 1531, a load cell 1532, and a level photoelectric sensor 1533.

The support table 1531 is used to support the constant volume bottle 151 to be constant volume. The weighing sensor 1532 and the level photoelectric sensor 1533 are provided on the support 1531, and detect the amount of the extraction liquid in the vial 151.

In this embodiment, the supporting platform 1531 includes a supporting base plate and a mounting plate disposed on the supporting base plate. The mounting plate stands on the supporting bottom plate. A load cell 1532 is located on the support base and a level photoelectric sensor 1533 is disposed on the mounting plate.

The volume metering principle of the load cell 1532 is as follows:

an empty volumetric flask 151 is placed on the support 1531, and the weight sensor 1532 detects that the empty volumetric flask 151 and the weighing surface have zero weight and is denoted as M0 (g). Specifically, when the volumetric flask 151 is placed on the support table 1531, the load cell 1532 is located at the bottom of the volumetric flask 151.

The specific gravity of the extract is known as k0 (g/mm). The extract needs to be fixed to V (cubic millimeter), and the weight M is M0+ K0 XV, wherein the unit of M is gram.

That is, when the weight detected by the weight sensor 1532 reaches M, the injection of the extraction solvent is stopped, and the constant volume is completed.

The liquid level photoelectric sensor 1533 is horizontally installed, and when the constant volume bottle 151 is placed on the support table 1531, the detection position of the liquid level photoelectric sensor 1533 coincides with the constant volume capacity liquid level of the constant volume bottle 151.

The volume fixing principle of the liquid level photoelectric sensor 1533 is as follows:

when the liquid level photoelectric sensor 1533 outputs an effective signal, the injection of the extraction solvent is stopped, and the constant volume is completed.

In this embodiment, the weighing sensor 1532 and the liquid level photoelectric sensor 1533 are used for constant volume, so that the accuracy and precision of constant volume are improved.

The transfer mechanism 16 includes a multi-axis robot arm 161 and a robot arm 162. The multi-axis robot arm 161 can move in a plurality of directions, and the robot arm 162 can open and close to grasp.

The motion of the multi-axis robot arm 161 includes movement in multiple directions and rotation. In particular, the transfer mechanism 16 comprises the following movements:

the manipulator 162 grasps the injection head 122, the multi-axis mechanical arm 161 moves to drive the injection head 122 to move, so that the injection head 122 extends into each extraction bottle 131 to inject the extraction solvent, and the injection head 122 extends into each constant volume bottle 151 to inject the extraction solvent to perform constant volume.

The manipulator 162 grasps the extraction flask 131, and the multi-axis robot 161 moves to move the extraction flask 131, so that the extraction flask 131 moves back and forth between the extraction flask support 132 and the support 1531.

The multi-axis robot 161 rotates to rotate the robot 162 and the extraction flask 131 together, so that the extraction flask 131 tilts to pour out the extraction solution. Specifically, the multi-axis robot arm 161 can rotate arbitrarily in 360 degrees.

The manipulator 162 grasps the volumetric flask 151, and the multi-axis manipulator 161 moves to drive the volumetric flask 151 to move, so that the volumetric flask 151 moves back and forth between the volumetric flask support 152 and the support platform 1531.

Therefore, the multi-axis robot arm 161 moves from the injection mechanism 12 to the constant volume mechanism 15, and can move back and forth within this range.

The robot 162 can open and close to hold or place down the syringe 122, the extraction flask 131, and the holding flask 151.

In this embodiment, the solvent bottle 11, the injection mechanism 12, the ultrasonic mechanism 14, the constant volume part 153, and the constant volume bottle holder 152 are sequentially disposed from upstream to downstream. The transfer mechanism 16 is disposed in the middle of the upstream and downstream directions with a certain distance therebetween in the direction perpendicular to the upstream and downstream directions to ensure the movement of the transfer mechanism 16.

The controller 17 is simultaneously electrically connected with the injection mechanism 12, the ultrasonic mechanism 14, the constant volume mechanism 15 and the transfer mechanism 16, and controls the injection amount of the extraction solvent injected by the injection mechanism 12, the ultrasonic parameters of the ultrasonic mechanism 14, the constant volume of the constant volume bottle 15 and the action of the transfer mechanism 16 according to preset data.

Specifically, the controller 17 is electrically connected to the injection pump 121 of the injection mechanism 12, and controls the amount of the extraction solvent pumped out by the injection pump 121, that is, the injection amount injected out by the injection head 122. Further, the controller 17 is electrically connected to the stepping motor of the syringe pump 121.

The controller 17 is electrically connected to the ultrasonic mechanism 14 to control the on/off, ultrasonic frequency and ultrasonic time of the ultrasonic mechanism 14.

The controller 17 is electrically connected to the load cell 1532 and/or the level photoelectric sensor 1533 of the constant volume mechanism 15 to receive data from the sensors.

The controller 17 is electrically connected to the transfer mechanism 16 to control the movement and rotation of the multi-axis robot arm 161 and the opening and closing of the robot 162.

The controller 17 adopts a microcomputer with a display touch screen for setting extraction parameters and starting or stopping extraction. The extraction parameters include the number of extraction processes in the whole extraction process, the addition amount of the extraction solvent in each extraction, the ultrasonic oscillation time in each extraction and the constant volume of the constant volume bottle 151.

Further, the controller 17 has an acousto-optic-electric feedback prompting function to prompt that the extraction has started, ended, etc.

The working principle of the automatic extraction device 1 is as follows:

a sample to be extracted is placed in the extraction flask 131, the extraction flask 131 is placed on the extraction flask holder 132, and a constant volume flask 151 corresponding to the extraction flask 131 is placed on the constant volume flask holder 152.

Extraction parameters are preset by the controller 17, and the whole extraction process is started after the extraction parameters are set.

The controller 17 controls the multi-axis mechanical arm 161 to move, so that the manipulator 162 grasps the injection head 122, then the multi-axis mechanical arm 161 moves and drives the injection head 122 to move, so that the injection head 122 is inserted into the extraction bottle 131, at this time, the controller 17 controls the injection pump 121 to work to inject the extraction solvent into the extraction bottle 131, and when the addition amount of the extraction solvent reaches a preset value, the controller 17 controls the injection pump 121 to stop working.

When there are a plurality of samples, each sample is placed in the extraction flask 131, and the controller 17 is provided with parameters corresponding to the plurality of samples, such as the addition amount of the extraction solvent, the ultrasonic oscillation time, and the constant volume of the constant volume flask 151. The controller 17 controls the multi-axis robot 161 to move in sequence, so as to sequentially insert the injection head 122 into the corresponding extraction flask 131, and the controller 17 controls the injection pump 121 to inject the addition amount of the extraction solvent according to the preset parameters.

After the extraction solvent is added and each extraction flask 131 is placed on the extraction flask bracket 132, the controller 17 controls the ultrasonic mechanism 14 to be turned on and controls the ultrasonic mechanism 14 to perform ultrasonic treatment at a certain ultrasonic frequency for a certain time.

After the ultrasonic mechanism 14 stops working, the multi-axis mechanical arm 161 moves to the ultrasonic mechanism 14, and the manipulator 162 grabs the extraction flask 131 and moves to the constant volume part 153. An empty constant volume bottle 151 transferred from the constant volume bottle holder 152 through the multi-axis mechanical arm 161 is placed on the support table 1531, and the transfer process can be completed in the ultrasonic oscillation process or can be performed after the ultrasonic oscillation is finished.

When the extraction flask 131 is located at the supporting platform 1531 and the volumetric flask 151 is located on the supporting platform 1531, the controller 17 controls the multi-axis mechanical arm 161 to rotate to incline the extraction flask 131, so that the extraction liquid in the extraction flask 131 is poured into the volumetric flask 151.

The load cell 1532 and the level photoelectric sensor 1533 of the holding part 153 start operating and send the detected data to the controller 17.

When the extraction flask 131 is plural, the holding flask 151 is plural in number. Therefore, after pouring an extraction flask 131, the multi-axis mechanical arm 161 first puts the extraction flask 131 to the original position of the extraction flask holder 132, then transfers the volumetric flask 151 on the support platform 1531 to the volumetric flask holder 152, then takes an empty volumetric flask 151 to put on the support platform 1531, and then moves to the extraction flask holder 132 to grab the extraction flask 131 to be poured to the support platform 1531, and continues the process of pouring the extraction liquid.

The above only completes one extraction flow in the whole extraction process. If the extraction process is repeated many times, the above steps are repeated many times.

Finally, the transferring mechanism 16 places the volumetric flask 151 to be metered on the supporting platform 1531, and then the transferring mechanism 16 extends the injection head 122 into the volumetric flask 151 to perform metering.

When a plurality of bottles 151 to be fixed are provided, the above-described fixing process is performed in sequence.

After the whole extraction process is completed, the acoustoelectric of the controller 17 gives out a prompt sound to prompt the completion.

According to the above description, the automatic extraction device 1 in this embodiment adopts the multi-axis mechanical arm 161, the mechanical arm 162, the injection pump 121, the injection head 122, the volume fixing member 153, and other components to realize the fully automatic work flows of sequentially injecting liquid, simultaneously performing ultrasound, respectively transferring extraction liquid, sequentially fixing volume, and the like for a plurality of extraction samples, thereby greatly improving the extraction efficiency of the samples.

In the automatic flow of the automatic extraction device 1, the mechanical arm is adopted to simulate manual operation mode for the processes of injection of the extraction solvent, transfer of the extraction liquid, constant volume of the constant volume bottle 151 and the like, the degree of automation is high, and the labor cost is reduced.

And each process is controlled by the controller 17, and is detected by the sensor during constant volume, so that the consistency in the extraction process is higher.

Meanwhile, the automatic extraction apparatus 1 is sequentially operated by the control of the controller 17, and thus is not exhaustive. And the extract is transferred into the fixed-volume bottle 151 by pouring the extract bottle 131, so that the automatic extraction device 1 has the advantage of no pipeline pollution.

In order to further make those skilled in the art specifically understand how the automatic extraction device provided in the present embodiment implements automatic extraction, a specific process of an automatic extraction method of the automatic extraction device will be described below.

Referring to fig. 3 and 4, the automatic extraction method of the automatic extraction apparatus includes the steps of:

s1, injection: a predetermined amount of extraction solvent is pumped into the extraction flask 131 containing the sample according to predetermined parameters.

When the number of samples is multiple, the multiple samples are placed in the multiple extraction flasks 131 in a one-to-one correspondence. Thus, in the priming step, the extraction solvent is pumped sequentially into the plurality of extraction flasks 131.

Specifically, during liquid injection, the controller 17 controls the multi-axis mechanical arm 161 to move, so that the manipulator 162 grasps the injection head 122, then the multi-axis mechanical arm 161 moves and drives the injection head 122 to move, so that the injection head 122 is inserted into the extraction bottle 131, at this time, the controller 17 controls the injection pump 121 to operate to inject the extraction solvent into the extraction bottle 131, and when the addition amount of the extraction solvent reaches a preset value, the controller 17 controls the injection pump 121 to stop operating.

In the case of a plurality of extraction flasks 131, the injection head 122 is inserted into each extraction flask 131 in sequence to inject the liquid.

S2, ultrasound: an ultrasonic mechanism 14 is provided to make the bottom of the extraction flask 131 located in the ultrasonic mechanism 14, and perform ultrasonic oscillation according to preset parameters.

Specifically, the on, off, ultrasonic time, and ultrasonic frequency of the ultrasonic mechanism 14 are controlled by the controller 17.

The ultrasonic mechanism 14 can perform ultrasonic oscillation on a plurality of extraction bottles 131 at the same time, thereby improving the extraction efficiency.

S3, pouring: a volumetric flask 151 is provided, and the extract in the extraction flask 131 is poured into the volumetric flask 151.

Specifically, the movement of the fixed volume flask 151 and the extraction flask 131 is performed by the transfer mechanism 16, and the transfer mechanism 16 is controlled by the controller 17.

The controller 17 first controls the multi-axis robot 161 to transfer an empty volumetric flask 151 located at the volumetric flask holder 152 to a predetermined position, such as the support platform 1531. The multi-axis robotic arm 161 then moves to the ultrasonic mechanism 14, and grasps an extraction vial 131 and moves to the support 1531. The multi-axis robot 161 rotates to tilt the extraction flask 131, and the extract in the extraction flask 131 is poured into the fixed volume flask 151. After pouring, the multi-axis robot 161 rotates to erect the extraction flask 131, and the extraction flask 131 is placed in the original position of the extraction flask support 132.

The multi-axis robot 161 transfers the volumetric flask 151 on the support platform 1531 to the original position of the volumetric flask holder 152, and continues to grab an empty volumetric flask 151 to the support platform 1531, and then transfers the next extraction flask 131 to the support platform 1531 according to the predetermined sequence to dump the extraction liquid.

That is, when the number of the extraction bottles 131 and the volumetric flasks 151 is plural and the extraction bottles 131 correspond to the volumetric flasks 151 one by one, the extract in the extraction bottles 131 is poured into the corresponding volumetric flasks 151 in sequence.

The above steps are repeated until all the extraction bottles 131 have completed the pouring step.

The extract is transferred into the volumetric flask 151 by pouring the extract bottle 131, so that the pouring step of the automatic extraction method has the advantage of no pipeline pollution.

S4, constant volume: and repeating the steps of injecting liquid, ultrasound and pouring, and injecting an extraction solvent into the constant volume bottle to perform constant volume to finish extraction.

The times of repeating the steps of injecting liquid, ultrasound and pouring can be set according to actual needs.

Specifically, a constant volume part 153 is provided, and the constant volume of the extraction liquid in the constant volume bottle 151 is completed through the constant volume part 153. Wherein, the constant volume piece 153 carries out constant volume through weighing detection and/or liquid level photoelectric detection. In this embodiment, the constant volume 153 is simultaneously detected by weighing and photoelectric detection of the liquid level.

The transfer mechanism 16 moves the syringe 122 to the support 1531, and injects the extraction solvent to a constant volume by inserting the syringe 122 into the constant volume bottle 151.

When a plurality of extraction bottles 131 and constant volume bottles 151 are provided, a constant volume bottle 151 to be subjected to constant volume is transferred to the constant volume part 153, after the constant volume part 153 is subjected to constant volume, the constant volume bottle 151 is transferred from the constant volume part 153, and the next constant volume bottle 151 is transferred to the constant volume part 153.

Step S0, before step S1, is also included to prepare: the sample is placed in the extraction flask 131 and the extraction parameters are set. Specifically, the operator places the samples into the extraction flasks 131 in sequence. Similarly, various extraction parameters, such as the number of extraction processes, the addition amount of the extraction solvent in each extraction, the ultrasonic oscillation time in each extraction, and the constant volume of the constant volume bottle 151, are preset on the controller 17 by an operator.

The number of extraction processes represents the number of repetitions of the priming, sonication, and pouring steps.

In the automatic extraction method in this embodiment, the mechanical arm is used to simulate manual operation mode for the processes of injection of the extraction solvent, transfer of the extraction liquid, constant volume of the constant volume bottle 151 and the like, so that the degree of automation is high, the labor cost is reduced, and the extraction efficiency is improved.

In the pouring step, the extract is poured into the volumetric flask 151 through the extraction flask 131, so that the automatic extraction method has the advantage of no pipeline pollution.

While the present invention has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims

1. An automatic extraction device, comprising:

a solvent bottle for storing an extraction solvent;

2. The automatic extraction device of claim 1, wherein the injection mechanism comprises:

the output pipeline is connected with the outlet of the injection pump;

3. The automatic extraction device of claim 2, wherein the syringe pump is driven by a stepper motor.

4. The automated extraction apparatus of claim 1, wherein the extraction mechanism comprises an extraction vial holder for supporting the extraction vial, the extraction vial holder being located within the receiving space of the ultrasonic mechanism and the bottom of the extraction vial being located within the receiving space.

5. The automatic extraction device according to claim 1, wherein the constant volume mechanism comprises a constant volume bottle bracket and a constant volume piece for supporting the constant volume bottle;

6. The automatic extraction device according to claim 5, wherein the constant volume part comprises a support table and a weighing sensor and/or a liquid level photoelectric sensor which are arranged on the support table and electrically connected with the controller, the support table is used for supporting the constant volume bottle, and the weighing sensor and the liquid level photoelectric sensor are both used for detecting the amount of the extraction liquid in the constant volume bottle on the support table.

7. The automatic extraction apparatus according to claim 1, wherein the transfer mechanism includes a multi-axis robot arm and a robot provided on the multi-axis robot arm, the robot arm being capable of opening and closing to perform gripping, and the multi-axis robot arm being capable of moving in a plurality of directions.

8. The automated extraction apparatus of claim 7, wherein the multi-axis robotic arm is movable back and forth between the injection mechanism, the ultrasonic mechanism, and the volumetric mechanism;

the multi-axis mechanical arm can rotate 360 degrees.

9. The automatic extraction device of claim 1, wherein the ultrasonic mechanism is located between the injection mechanism and the volumetric mechanism.