Liquid-liquid extraction device

Abstract

The utility model provides a liquid-liquid extraction device and belongs to the technical field of extraction. The upper-layer liquid transfer pipeline and the lower-layer liquid transfer pipeline are directly arranged in the extraction bottle, the optical sensing device is used for determining the connecting interface of the upper-layer liquid and the lower-layer liquid after extraction is completed, and the driving device is used for moving the end part of the upper-layer liquid transfer pipeline to the connecting interface of the upper-layer liquid and the lower-layer liquid; the nitrogen pressure is utilized to drive the upper liquid and the lower liquid to transfer from the corresponding pipelines, so that the automatic extraction and separation process is realized, the extraction efficiency can be improved, and the dependence on manpower is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to extraction technical field, concretely relates to a liquid-liquid extraction device. BACKGROUND

[0002] Extraction is a method that makes solute substances transfer from one solvent to another by using the difference of solubility or distribution coefficient in two mutually insoluble (or slightly soluble) solvents. After extraction, the upper liquid and the lower liquid after layering need to be separated and transferred. In the related technology, the layered liquid is usually transferred to a separatory funnel, the lower liquid is first discharged from the separatory funnel, and then the upper liquid is discharged. This method is highly dependent on manual operation, and the connection interface of the upper liquid and the lower liquid needs to be visually inspected by manual operation, and the opening and closing of the separatory funnel also need to be controlled by manual operation, which is low in efficiency and difficult to realize automatic operation.

[0003] Therefore, it is necessary to provide a liquid-liquid extraction device to solve the above problems. UTILITY MODEL CONTENT

[0004] The utility model provides a liquid-liquid extraction device, directly sets up upper liquid transfer pipeline and lower liquid transfer pipeline in the extraction bottle, determines the connection interface of the upper liquid and the lower liquid by using optical sensing device after extraction, moves the end of the upper liquid transfer pipeline to the connection interface of the upper liquid and the lower liquid by using driving device, and then transfers the upper liquid and the lower liquid from the corresponding pipeline outward, realizes the automatic operation of the extraction and separation process, and effectively solves at least one technical problem mentioned in the background art.

[0005] In order to solve the above technical problems, the utility model is realized as follows:

[0006] A liquid-liquid extraction device comprises:

[0007] An extraction bottle contains extraction liquid and liquid to be extracted, and the liquid in the extraction bottle is layered into upper liquid and lower liquid after extraction;

[0008] An upper liquid transfer pipeline has one end on the connection interface of the upper liquid and the lower liquid and the other end outside the extraction bottle, and is used for transferring the upper liquid outward;

[0009] A lower liquid transfer pipeline has one end at the bottom of the extraction bottle and the other end outside the extraction bottle, and is used for transferring the lower liquid outward;

[0010] The adjusting assembly comprises an optical sensing device and a driving device, the optical sensing device is arranged at the top of the extraction bottle for emitting detection light to the liquid in the extraction bottle, and the connection interface between the upper liquid and the lower liquid is determined by the different refraction indexes of the detection light in the upper liquid and the lower liquid; the driving device is used for driving the end of the upper liquid transfer pipeline to move to the connection interface between the upper liquid and the lower liquid.

[0011] As a preferred improvement, the bottom of the extraction bottle is closed, and the top is provided with an opening which is blocked by a sealing plug, and the optical sensing device is fixed on the sealing plug.

[0012] As a preferred improvement, the driving device is a double-output-shaft hydraulic oil cylinder, comprising a cylinder body, a piston and an output shaft, the cylinder body is fixed with the sealing plug of the extraction bottle, and a hollow chamber is formed in the inside, the middle position of the output shaft is accommodated in the chamber, and both ends thereof are exposed outside the chamber, the piston is sleeved on the periphery of the output shaft, and the side wall of the piston abuts against the side wall of the cylinder body, the piston divides the chamber into first and second chambers which are independent of each other, the first and second chambers are filled with hydraulic oil, a pressure difference is generated between the first and second chambers, the piston is driven to move along the axis of the cylinder body by the pressure difference, and the output shaft is synchronously driven to move, the output shaft is a hollow structure with both ends being open, the upper liquid transfer pipeline passes through the hollow area of the output shaft and is fixed with the output shaft.

[0013] As a preferred improvement, a gas pipeline is further arranged, which communicates with the extraction bottle and is used for conveying nitrogen into the extraction bottle, and the nitrogen pressure is used to drive the upper liquid to transfer out from the upper liquid transfer pipeline and to drive the lower liquid to transfer out from the lower liquid transfer pipeline.

[0014] As a preferred improvement, a third valve is arranged on the gas pipeline, which is used for controlling the conduction and cut-off of the gas pipeline.

[0015] As a preferred improvement, a magnetic stirring device is further arranged, which is arranged at the bottom of the extraction bottle and is used for stirring the liquid in the extraction bottle to make the extraction liquid and the liquid to be extracted fully mixed.

[0016] As a preferred improvement, an upper liquid receiving bottle and a lower liquid receiving bottle are further arranged, the upper liquid transfer pipeline is arranged in communication with the upper liquid receiving bottle at one end outside the extraction bottle, and is used for transferring the upper liquid in the extraction bottle into the upper liquid receiving bottle; the lower liquid transfer pipeline is arranged in communication with the lower liquid receiving bottle at one end outside the extraction bottle, and is used for transferring the lower liquid in the extraction bottle into the lower liquid receiving bottle.

[0017] As a preferred improvement, the upper liquid transfer pipeline is provided with a first valve for controlling the on-off of the upper liquid transfer pipeline; the lower liquid transfer pipeline is provided with a second valve for controlling the on-off of the lower liquid transfer pipeline.

[0018] As a preferred improvement, a controller is further included, the first valve, the second valve and the third valve are all solenoid valves, and the magnetic stirring device, the first valve, the second valve, the third valve, the optical sensing device and the driving device are all electrically connected with the controller and controlled by the controller.

[0019] The liquid-liquid extraction device has the advantages that:

[0020] (1) The upper liquid transfer pipeline and the lower liquid transfer pipeline are directly arranged in the extraction bottle, the connection interface of the upper liquid and the lower liquid is determined by the optical sensing device after the extraction is completed, the end of the upper liquid transfer pipeline is moved to the connection interface of the upper liquid and the lower liquid by the driving device, and then the upper liquid and the lower liquid are transferred out from the corresponding pipelines, so that the automation of the extraction and separation process is realized, the efficiency of the extraction is improved, and the dependence on manual operation is reduced.

[0021] (2) The transfer of the upper liquid and the lower liquid is driven by the gas pressure, the transfer rate of the upper liquid and the lower liquid can be well controlled, and the nitrogen gas can be introduced to discharge the air in the system and avoid the oxidation of the liquid in the system. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 FIG. 1 shows a structural diagram of a liquid-liquid extraction device according to the present application;

[0023] Figure 2 FIG. 2 shows a structural diagram of a driving device according to the present application. Figure 1 DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0025] Please refer to Figures 1-2 ​The embodiment provides a liquid-liquid extraction device which comprises an extraction bottle 10, a magnetic stirring device 20, an upper layer liquid transfer pipeline 30, a lower layer liquid transfer pipeline 40, an adjusting assembly 50 and a gas pipeline 60.

[0026] The extraction bottle 10 contains extraction liquid and liquid to be extracted, the bottom of the extraction bottle 10 is closed, and the top is provided with an opening which is sealed by a sealing plug, so that a closed environment is formed in the extraction bottle 10.

[0027] The magnetic stirring device 20 is arranged at the bottom of the extraction bottle 10 and is used for stirring the liquid in the extraction bottle 10, so that the extraction liquid and the liquid to be extracted are fully mixed to complete the extraction. The magnetic stirring device 20 can adopt a conventional structure in the art, and the embodiment will not be described here. After the extraction is completed, the liquid in the extraction bottle 10 is stratified into upper layer liquid and lower layer liquid.

[0028] One end of the upper layer liquid transfer pipeline 30 is located on the connection interface between the upper layer liquid and the lower layer liquid, and the other end is arranged outside the extraction bottle 10 and is used for transferring the upper layer liquid outside. Specifically, the one end of the upper layer liquid transfer pipeline 30 arranged outside the extraction bottle 10 is in communication with an upper layer liquid receiving bottle 70, and is used for transferring the upper layer liquid in the extraction bottle 10 into the upper layer liquid receiving bottle 70, so as to collect and store the upper layer liquid.

[0029] The upper layer liquid transfer pipeline 30 is provided with a first valve 31, and the first valve 31 is used for controlling the conduction and cut-off of the upper layer liquid transfer pipeline 30.

[0030] One end of the lower layer liquid transfer pipeline 40 is arranged at the bottom of the extraction bottle 10, and the other end is arranged outside the extraction bottle 10 and is used for transferring the lower layer liquid outside. Specifically, the one end of the lower layer liquid transfer pipeline 40 arranged outside the extraction bottle 10 is in communication with a lower layer liquid receiving bottle 80, and is used for transferring the lower layer liquid in the extraction bottle 10 into the lower layer liquid receiving bottle 80, so as to collect and store the lower layer liquid.

[0031] The lower layer liquid transfer pipeline 40 is provided with a second valve 41, and the second valve 41 is used for controlling the conduction and cut-off of the lower layer liquid transfer pipeline 40.

[0032] The adjusting assembly 50 comprises an optical sensing device 51 and a driving device 52. The optical sensing device 51 is arranged at the top of the extraction bottle 10 and fixed with the sealing plug. The optical sensing device 51 is used to emit detection light to the liquid in the extraction bottle 10, and the connection interface between the upper liquid and the lower liquid is determined by the different refraction indexes of the detection light in the upper liquid and the lower liquid. The optical sensing device 51 can adopt the conventional structure in the art, and thus will not be described here.

[0033] The driving device 52 is a double-output hydraulic cylinder, which specifically comprises a cylinder body 521, a piston 522 and an output shaft 523.

[0034] The cylinder body 521 is fixed with the sealing plug of the extraction bottle 10 and surrounds a hollow chamber 5210 inside. The output shaft 523 penetrates the cylinder body 521 along the axial direction of the cylinder body 521, that is, the middle part of the output shaft 523 is accommodated in the chamber 5210, and the two ends thereof are exposed outside the chamber 5210. The piston 522 is sleeved on the periphery of the output shaft 523, and the side wall of the piston 522 abuts against the side wall of the cylinder body 521. The piston 522 divides the chamber 5210 into a first chamber 5211 and a second chamber 5212 which are independent of each other. The first chamber 5211 and the second chamber 5212 are filled with hydraulic oil. By adjusting the pressure of the hydraulic oil in the first chamber 5211 and the second chamber 5212, a pressure difference between the first chamber 5211 and the second chamber 5212 can be generated, and the piston 522 can be driven to move along the axial direction of the cylinder body 521 by the pressure difference, so as to drive the output shaft 523 to move synchronously.

[0035] It can be understood that, in order to adjust the pressure of the hydraulic oil in the first chamber 5211 and the second chamber 5212, the first chamber 5211 and the second chamber 5212 also need to be communicated with the adjusting pipeline outside, and the first chamber 5211 and the second chamber 5212 also need to be provided with corresponding adjusting interfaces, which can adopt the conventional technology in the art, and thus will not be described here.

[0036] In addition, the driving device 52 also needs to have good sealing performance to avoid leakage of the hydraulic oil in the chamber 5210. The sealing manner can also adopt the conventional manner in the art, and thus will not be limited in the embodiment.

[0037] The output shaft 523 has a hollow structure with open ends. The upper liquid transfer pipeline 30 penetrates the hollow region of the output shaft 523 and is fixed with the output shaft 523. The movement of the output shaft 523 drives the movement of the upper liquid transfer pipeline 30.

[0038] The utility model discloses on the basis of prior art double output shaft hydraulic cylinder, the output shaft is adjusted to the hollow structure of both ends opening, and the upper liquid transfer pipeline 30 is passed through the hollow area of output shaft and is fixed with it, and the smooth driving of upper liquid transfer pipeline 30 is realized through the tiny improvement.

[0039] The gas pipeline 60 is communicated with the extraction bottle 10, is used for conveying nitrogen to the extraction bottle 10, utilizes nitrogen pressure to drive the outward transfer of upper liquid from the upper liquid transfer pipeline 30, drives the outward transfer of lower liquid from the lower liquid transfer pipeline 40, and the input of nitrogen can also exhaust the air in the system, avoids the oxidation of liquid in the system, the third valve 61 is arranged on the gas pipeline 60, and the third valve 61 is used for controlling the conduction and cut-off of the gas pipeline 60.

[0040] Further, the liquid-liquid extraction device further includes a controller, the first valve 31, the second valve 41 and the third valve 61 are all solenoid valves, the magnetic stirring device 20, the first valve 31, the second valve 41, the third valve 61, the optical sensing device 51 and the driving device 52 are all electrically connected with the controller, and the controller is used for controlling operation, so that the automatic execution of the extraction process can be realized.

[0041] The operation process of the liquid-liquid extraction device provided by the utility model is as follows:

[0042] (1) adding extraction liquid and liquid to be extracted into the extraction bottle 10, and sealing the bottle opening of the extraction bottle 10 with a sealing plug;

[0043] (2) opening the third valve 61, the first valve 31 and the second valve 41, so that the system is filled with nitrogen, and then closing all valves;

[0044] (3) starting the magnetic stirring device 20, so that the extraction liquid and the liquid to be extracted are fully mixed, then closing the magnetic stirring device 20, and standing until the liquid is stratified to form upper liquid and lower liquid;

[0045] (4) starting the optical sensing device 51, sensing the connection interface of the upper liquid and the lower liquid, starting the driving device 52, driving the upper liquid transfer pipeline 30 to move, so that the bottom end of the upper liquid transfer pipeline 30 is located on the connection interface of the upper liquid and the lower liquid;

[0046] (4) opening the first valve 31, slowly opening the third valve 61, increasing the pressure in the extraction bottle 10 by using gas, so that the upper liquid is transferred to the upper liquid receiving bottle 70 through the upper liquid transfer pipeline 30, until the upper liquid is completely transferred, then closing the third valve 61 and the first valve 31;

[0047] (5) open the second valve 41, slowly open the third valve, increase the pressure in the extraction bottle 10 by gas, transfer the lower liquid into the lower liquid receiving bottle 80 through the lower liquid transfer pipeline 40 until the transfer of the lower liquid is completed, then close the third valve 61 and the second valve 41, and the extraction is completed.

[0048] The embodiments of the utility model are described above in combination with the drawings, but the utility model is not limited to the specific embodiments described above, and the specific embodiments described above are only illustrative but not restrictive, and a person of ordinary skill in the art can make many forms without departing from the purpose of the utility model and the scope protected by the claims under the inspiration of the utility model, which all belong to the protection of the utility model.

Claims

1. A liquid-liquid extraction device, characterized by, The utility model relates to an extraction device, comprising: an extraction bottle containing extraction liquid and liquid to be extracted, after extraction, the liquid in the extraction bottle is divided into upper liquid and lower liquid; an upper liquid transfer pipeline, one end of which is located at the connection interface between the upper liquid and the lower liquid, and the other end of which is arranged outside the extraction bottle, for transferring the upper liquid outside; a lower liquid transfer pipeline, one end of which is located at the bottom of the extraction bottle, and the other end of which is arranged outside the extraction bottle, for transferring the lower liquid outside; an adjusting assembly, comprising an optical sensing device and a driving device, the optical sensing device is arranged at the top of the extraction bottle, for emitting detection light to the liquid in the extraction bottle, and determining the connection interface between the upper liquid and the lower liquid by the different refractive indexes of the detection light in the upper liquid and the lower liquid; the driving device is used for driving the end of the upper liquid transfer pipeline to move to the connection interface between the upper liquid and the lower liquid.

2. The liquid-liquid extraction device of claim 1, wherein, The bottom of the extraction bottle is closed, and the top is provided with an opening, which is blocked by a sealing plug, and the optical sensing device is fixed on the sealing plug.

3. The liquid-liquid extraction device of claim 1, wherein, The driving device is a double-output hydraulic cylinder, comprising a cylinder body, a piston and an output shaft, the cylinder body is fixed with the sealing plug of the extraction bottle, and a hollow chamber is formed in the inside, the output shaft is accommodated in the chamber at the middle position, and the two ends are exposed outside the chamber, the piston is sleeved on the periphery of the output shaft, and the side wall of the piston abuts against the side wall of the cylinder body, the piston divides the chamber into first and second chambers which are independent of each other, the first and second chambers are filled with hydraulic oil, a pressure difference is generated between the first and second chambers, the piston is driven to move along the axis of the cylinder body by the pressure difference, and the output shaft is driven to move synchronously, the output shaft is a hollow structure with open ends, the upper liquid transfer pipeline passes through the hollow area of the output shaft and is fixed with the output shaft.

4. The liquid-liquid extraction device of claim 1, wherein, It also comprises a gas pipeline, which communicates with the extraction bottle, for conveying nitrogen into the extraction bottle, and uses the nitrogen pressure to drive the upper liquid to transfer outside from the upper liquid transfer pipeline and drive the lower liquid to transfer outside from the lower liquid transfer pipeline.

5. The liquid-liquid extraction device of claim 4, wherein, A third valve is arranged on the gas pipeline, which is used to control the conduction and cut-off of the gas pipeline.

6. The liquid-liquid extraction device of claim 5, wherein, It also comprises a magnetic stirring device, which is arranged at the bottom of the extraction bottle, for stirring the liquid in the extraction bottle, so that the extraction liquid and the liquid to be extracted are fully mixed.

7. The liquid-liquid extraction device of claim 6, wherein It also comprises an upper liquid receiving bottle and a lower liquid receiving bottle, one end of the upper liquid transfer pipeline arranged outside the extraction bottle communicates with the upper liquid receiving bottle, for transferring the upper liquid in the extraction bottle into the upper liquid receiving bottle; one end of the lower liquid transfer pipeline arranged outside the extraction bottle communicates with the lower liquid receiving bottle, for transferring the lower liquid in the extraction bottle into the lower liquid receiving bottle.

8. The liquid-liquid extraction device of claim 6, wherein, The upper liquid transfer pipeline is provided with a first valve for controlling the conduction and cut-off of the upper liquid transfer pipeline; the lower liquid transfer pipeline is provided with a second valve for controlling the conduction and cut-off of the lower liquid transfer pipeline.

9. The liquid-liquid extraction device of claim 8, wherein, Further comprising a controller, the first valve, the second valve and the third valve are all electromagnetic valves, the magnetic stirring device, the first valve, the second valve, the third valve, the optical sensing device and the driving device are all electrically connected with the controller and are controlled to operate by the controller.

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