Experimental device for extraction

Abstract

The utility model provides an experimental device for extraction, which relates to the technical field of fluid phase equilibrium and comprises an outer circulation bottle, a phase equilibrium bottle, a first sampling pipeline, a second sampling pipeline, a liquid inlet pipeline and a liquid outlet pipeline. According to the device, the liquid inlet pipeline and the liquid outlet pipeline are located on the two opposite sides of the outer circulation bottle and communicate with the outer circulation cavity. On the basis, the circulating liquid can be fully circulated in the whole outer circulating cavity, so that the chemical actual temperature in the phase balance cavity is correspondingly ensured to be uniformly changed. Moreover, on the basis that the first sampling pipeline and the second sampling pipeline both penetrate through the outer circulation bottle and are communicated with the phase balance cavity, the first sampling pipeline and the second sampling pipeline are arranged at an interval in the vertical direction, and the first sampling pipeline is higher than the second sampling pipeline. That is to say, the first sampling pipeline and the second sampling pipeline which are independent are correspondingly arranged, so that the upper-layer liquid and the lower-layer liquid which are independently obtained are representative liquid.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid phase equilibrium, and particularly to an experimental device for extraction. Background Art

[0002] At present, the commonly used liquid-liquid extraction glass reaction flask in chemical laboratories is often a traditional single-inlet type. When staff take samples of the upper-layer liquid, they often take samples from the feed inlet. Moreover, the inlet and outlet of the circulating liquid for the reaction are arranged on the same side.

[0003] However, through research by the inventor, it is found that since the sampling port for the upper-layer liquid and the feed inlet are the same, it is impossible to accurately obtain a representative sample of the upper-layer liquid. And the above-mentioned circulating liquid inlet and outlet on the same side easily lead to insufficient circulation of the circulating liquid and unstable experimental conditions. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an experimental device for extraction, which can make the circulating liquid circulate fully to maintain experimental conditions; and can also be provided with an independent sampling pipeline on the reaction flask to facilitate accurately obtaining representative samples of each layer of liquid and ensuring experimental accuracy.

[0005] The embodiments of the utility model are implemented as follows:

[0006] In a first aspect, the utility model provides an experimental device for extraction, including an outer circulation flask, a phase equilibrium flask, a first sampling pipeline, a second sampling pipeline, a liquid inlet pipeline, and a liquid outlet pipeline;

[0007] The phase equilibrium flask is located inside the outer circulation flask, and the inner cavity of the phase equilibrium flask is a phase equilibrium cavity. An outer circulation cavity is formed between the phase equilibrium flask and the outer circulation flask. The liquid inlet pipeline and the liquid outlet pipeline are located on opposite sides of the outer circulation flask and are both communicated with the outer circulation cavity;

[0008] Both the first sampling pipeline and the second sampling pipeline pass through the outer circulation flask and are communicated with the phase equilibrium cavity. The first sampling pipeline and the second sampling pipeline are arranged at intervals along the vertical direction, and the first sampling pipeline is higher than the second sampling pipeline.

[0009] In an optional embodiment, the outer walls of the liquid inlet pipeline and the liquid outlet pipeline are both provided with insertion parts for inserting into the circulating liquid pipeline.

[0010] In an optional embodiment, the insertion part includes a plurality of annular protrusions, and the plurality of annular protrusions are arranged at intervals along the axial direction of the liquid inlet pipeline or the liquid outlet pipeline.

[0011] In an optional embodiment, the liquid inlet pipeline and the liquid outlet pipeline are arranged at intervals along the vertical direction, and the liquid outlet pipeline is higher than the liquid inlet pipeline.

[0012] In an alternative embodiment, one end of the first sampling pipe away from the outer circulation bottle is arranged to slope upward.

[0013] In an alternative embodiment, the outer wall of the first sampling pipe is provided with threads for mating with a plastic nut.

[0014] In an alternative embodiment, the second sampling pipe is arranged horizontally, and a switch is provided on the second sampling pipe, and the switch is used to control the on-off of the second sampling pipe and the phase equilibrium chamber.

[0015] In an alternative embodiment, the phase equilibrium bottle is a wide-mouth bottle, and the experimental device for extraction further includes a sealing plug for mating with the wide-mouth bottle.

[0016] In an alternative embodiment, the experimental device for extraction further includes a thermometer, and the thermometer is connected to the sealing plug and one end thereof passes through the sealing plug.

[0017] In an alternative embodiment, the experimental device for extraction is made by an integral molding process.

[0018] The beneficial effects of the embodiments of the present utility model include:

[0019] The present application provides an experimental device for extraction, which includes an outer circulation bottle, a phase equilibrium bottle, a first sampling pipe, a second sampling pipe, a liquid inlet pipe and a liquid outlet pipe. In the present application, the liquid inlet pipe and the liquid outlet pipe are located on opposite sides of the outer circulation bottle and are both communicated with the outer circulation chamber. Based on this, the circulating liquid can fully circulate in the entire outer circulation chamber, thereby correspondingly ensuring uniform temperature change of the chemical substance in the phase equilibrium chamber, and then correspondingly avoiding the problem of uneven chemical reaction caused by local overheating or overcooling of the phase equilibrium chamber. And, on the basis that both the first sampling pipe and the second sampling pipe pass through the outer circulation bottle and are communicated with the phase equilibrium chamber, the first sampling pipe and the second sampling pipe are arranged at intervals along the vertical direction, and the first sampling pipe is higher than the second sampling pipe. That is to say, the present application is correspondingly provided with independent first and second sampling pipes to ensure that the upper liquid and the lower liquid separately and independently obtained are representative liquids. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 Schematic diagram of the experimental device for extraction provided by the embodiments of the present utility model.

[0022] Icons: 10 - Experimental device for extraction; 100 - Outer circulation bottle; 110 - Outer circulation chamber; 200 - Phase equilibrium bottle; 210 - Phase equilibrium chamber; 310 - First sampling pipeline; 330 - Second sampling pipeline; 331 - Switch; 410 - Liquid inlet pipeline; 430 - Liquid outlet pipeline; 450 - Insertion part; 451 - Ring-shaped protrusion; 500 - Sealing plug; 600 - Thermometer. Detailed implementation manners

[0023] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. The components of the embodiments of the present utility model usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model claimed, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0025] It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0026] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0027] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0028] In the description of the present utility model, it should also be noted that, unless otherwise clearly defined and limited, the terms "set", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0029] As described in the background art, in the existing liquid-liquid extraction reaction flask, there is a problem that the upper liquid sampling port and the feeding port are the same, and it is impossible to accurately obtain a representative sample of the upper liquid. At the same time, there is also a problem that the circulating liquid inlet and the outlet are located on the same side, which easily leads to insufficient circulation of the circulating liquid and unstable experimental conditions.

[0030] To improve the above problems, the present application provides an experimental device 10 for extraction, which can make the circulating liquid circulate sufficiently to maintain experimental conditions; and, it can also set up an independent sampling pipeline on the reaction flask to facilitate accurately obtaining representative samples of each layer of liquid and ensuring experimental accuracy.

[0031] Please refer to Figure 1 , Figure 1 which is a schematic diagram of the experimental device 10 for extraction provided by the embodiment of the present utility model. The present application provides an experimental device 10 for extraction, which includes an outer circulation flask 100, a phase equilibrium flask 200, a first sampling pipeline 310, a second sampling pipeline 330, a liquid inlet pipeline 410, and a liquid outlet pipeline 430.

[0032] Among them, the phase equilibrium flask 200 is located inside the outer circulation flask 100. The inner cavity of the phase equilibrium flask 200 is a phase equilibrium cavity 210, which is used to provide a physical space for two experimental reagents for extraction, so that they can contact each other and achieve separation. And an outer circulation cavity 110 is formed between the phase equilibrium flask 200 and the outer circulation flask 100, which is used to maintain a constant temperature in the experiment, that is, to maintain the phase equilibrium cavity 210 always at the required temperature by circulating and heating or cooling the liquid.

[0033] In the present application, the liquid inlet pipeline 410 and the liquid outlet pipeline 430 are located on opposite sides of the outer circulation flask 100 and are both communicated with the outer circulation cavity 110. Based on this, the circulating liquid can circulate sufficiently in the entire outer circulation cavity 110, thereby correspondingly ensuring a uniform change in the temperature of the chemical in the phase equilibrium cavity 210, and then correspondingly avoiding the problem of non-uniform chemical reaction caused by local overheating or overcooling of the phase equilibrium cavity 210.

[0034] Based on the above, since the experimental device 10 for extraction provided in this application is specifically applied to liquid-liquid extraction experiments and it is necessary to obtain the upper liquid and the lower liquid. Therefore, on the basis that both the first sampling pipe 310 and the second sampling pipe 330 pass through the outer circulation bottle 100 and communicate with the phase equilibrium chamber 210, the first sampling pipe 310 and the second sampling pipe 330 are arranged at intervals along the vertical direction, and the first sampling pipe 310 is higher than the second sampling pipe 330. That is to say, this application is correspondingly provided with independent first sampling pipe 310 and second sampling pipe 330 to ensure that the obtained upper liquid and lower liquid are representative liquids respectively.

[0035] In addition, it should be noted that the experimental device 10 for extraction used in this application is made by an integral molding process, thus correspondingly omitting the assembly process of two separate outer circulation bottles 100 and phase equilibrium bottles 200, and greatly simplifying the preparatory work in the early stage of the experiment. Specifically, the experimental device 10 for extraction can be made of glass and can be made by blowing the molten glass into shape or pressing it into shape or casting it into shape, which will not be elaborated here.

[0036] Among them, for the convenience of adding reagents, the phase equilibrium bottle 200 is a wide-mouth bottle, and its opening is the feed port of the experimental device 10 for extraction provided in this application, and the experimental reagents for the reaction are added to the reaction chamber from here. It can be understood that the inner and outer peripheral walls at the feed port here are both smooth glass surfaces. On this basis, considering that sealing is very important during the liquid-liquid extraction reaction, the experimental device 10 for extraction also includes a sealing plug 500 that cooperates with the wide-mouth bottle. Specifically, after the staff adds the experimental reagents, a sealing plug 500 such as a glass plug or a rubber plug can be used for sealing.

[0037] Furthermore, to achieve the beneficial effect of accurate temperature measurement, the experimental device 10 for extraction also includes a thermometer 600, and the thermometer 600 is connected to the sealing plug 500 and one end passes through the sealing plug 500. When applied to a specific scenario, the end of the thermometer 600 passing through the sealing plug 500 will be inserted into the phase equilibrium chamber 210 to play a role in detecting the reaction temperature of the reaction reagents in the phase equilibrium chamber 210. On this basis, the staff can compare the measurement data of the thermometer 600 with the temperature of the circulating liquid, thereby correspondingly improving the experimental accuracy. It should be noted that the thermometer 600 here can be an electronic thermometer 600 or a mercury thermometer 600, which will not be elaborated in this application.

[0038] Please refer to again Figure 1, the first sampling pipe 310 and the second sampling pipe 330 will be described in detail below. In an actual application scenario, the staff selects the method of syringe sampling to sample the upper liquid. On this basis, considering that the syringe does not have the bending characteristic, one end of the first sampling pipe 310 away from the external circulation bottle 100 is arranged to incline upward. And, to prevent the syringe from swaying during application and hitting the wall of the first sampling pipe 310, a thread for cooperating with a plastic nut is arranged around the outer wall of the first sampling pipe 310. The syringe passes through the gasket inserted into the plastic nut and penetrates into the first sampling pipe 310. During the sampling process, the syringe is always limited by the plastic nut, avoiding experimental errors caused by liquid spilling.

[0039] In some embodiments, to facilitate obtaining the lower liquid, the second sampling pipe 330 is arranged horizontally, and a switch 331 is arranged on the second sampling pipe 330. The switch 331 is used to control the on-off between the second sampling pipe 330 and the phase equilibrium chamber 210. Specifically, when the switch 331 is parallel to the horizontal plane, the second sampling pipe 330 is connected to the phase equilibrium chamber 210, and the lower liquid flows out; when the switch 331 is perpendicular to the horizontal plane, the connection between the second sampling pipe 330 and the phase equilibrium chamber 210 is disconnected, and the lower liquid stops flowing out. It should be noted that the diameter of the second sampling pipe 330 is relatively small to prevent the upper liquid and the lower liquid from flowing out together when the diameter is too large. And, one end of the second sampling pipe 330 away from the phase equilibrium chamber 210 can be set as an inclined section, and the inclination angle is 45°. In addition, to ensure the stability of the first sampling pipe 310 and the second sampling pipe 330 during application, both of them are welded to the external circulation bottle 100.

[0040] Please refer to again Figure 1 , the liquid inlet pipe 410 and the liquid outlet pipe 430 for introducing and discharging the circulating liquid will be described in detail below. In some embodiments, plug-in portions 450 are arranged on the outer walls of the liquid inlet pipe 410 and the liquid outlet pipe 430 for plugging into the circulating liquid pipe, thereby correspondingly improving the simplicity of installation with the circulating liquid pipe. On this basis, the plug-in portion 450 includes a plurality of annular protrusions 451, and the plurality of annular protrusions 451 are arranged at intervals along the axial direction of the liquid inlet pipe 410 or the liquid outlet pipe 430. On the one hand, the above-mentioned annular protrusions 451 can increase the friction force and correspondingly increase the connection stability; on the other hand, its shape characteristics also have a certain sealing property, which can prevent the circulating liquid from leaking.

[0041] In addition, to further improve the utility of the circulating liquid, the liquid inlet pipe 410 and the liquid outlet pipe 430 are arranged at intervals along the vertical direction, and the liquid outlet pipe 430 is higher than the liquid inlet pipe 410. Based on the above position setting, the circulating liquid can be evenly filled in the outer circulation chamber 110 from bottom to top, achieving uniform temperature distribution, thereby correspondingly reducing temperature extremes, avoiding inconsistent chemical reaction rates caused by uneven temperature, and avoiding problems of local overheating or overcooling, so that the experimental data is easier and more accurate.

[0042] In summary, the present application provides an experimental device 10 for extraction, which includes an outer circulation bottle 100, a phase equilibrium bottle 200, a first sampling pipe 310, a second sampling pipe 330, a liquid inlet pipe 410, and a liquid outlet pipe 430. In the present application, the liquid inlet pipe 410 and the liquid outlet pipe 430 are located on opposite sides of the outer circulation bottle 100 and are both communicated with the outer circulation chamber 110. Based on this, the circulating liquid can fully circulate in the entire outer circulation chamber 110, thereby correspondingly ensuring uniform temperature change of the chemical substance in the phase equilibrium chamber 210, and then correspondingly avoiding the problem of uneven chemical reaction caused by local overheating or overcooling in the phase equilibrium chamber 210. Moreover, on the basis that both the first sampling pipe 310 and the second sampling pipe 330 pass through the outer circulation bottle 100 and are communicated with the phase equilibrium chamber 210, the first sampling pipe 310 and the second sampling pipe 330 are arranged at intervals along the vertical direction, and the first sampling pipe 310 is higher than the second sampling pipe 330. That is to say, the present application is correspondingly provided with independent first sampling pipe 310 and second sampling pipe 330 to ensure that the upper liquid and the lower liquid obtained independently are representative liquids.

[0043] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An experimental device for extraction, characterized in that: It comprises an external circulation bottle (100), a phase balance bottle (200), a first sampling pipeline (310), a second sampling pipeline (330), a liquid inlet pipeline (410) and a liquid outlet pipeline (430); The phase balance bottle (200) is located in the external circulation bottle (100), and the inner cavity of the phase balance bottle (200) is a phase balance cavity (210), an external circulation cavity (110) is formed between the phase balance bottle (200) and the external circulation bottle (100), and the liquid inlet pipe (410) and the liquid outlet pipe (430) are located on two opposite sides of the external circulation bottle (100), and are both in communication with the external circulation cavity (110); The first sampling pipe (310) and the second sampling pipe (330) are both connected to the phase equilibrium chamber (210) through the external circulation bottle (100), and the first sampling pipe (310) and the second sampling pipe (330) are arranged at intervals along the vertical direction, and the first sampling pipe (310) is higher than the second sampling pipe (330).

2. The extraction experimental device according to claim 1, characterized in that: The outer walls of the liquid inlet pipe (410) and the liquid outlet pipe (430) are both provided with plug-in parts (450) for plugging with the circulating liquid pipe.

3. The extraction experimental device according to claim 2, characterized in that: The plug-in portion (450) comprises a plurality of annular protrusions (451), and the plurality of annular protrusions (451) are arranged at intervals along the axial direction of the liquid inlet pipe (410) or the liquid outlet pipe (430).

4. The extraction experimental device according to claim 1, characterized in that: The liquid inlet pipe (410) and the liquid outlet pipe (430) are arranged at intervals along the vertical direction, and the liquid outlet pipe (430) is higher than the liquid inlet pipe (410).

5. The extraction experimental device according to claim 1, characterized in that: The end of the first sampling pipe (310) away from the external circulation bottle (100) is arranged to be inclined upward.

6. The extraction experimental device according to claim 5, characterized in that: The outer wall of the first sampling pipe (310) is surrounded by a thread for matching with a plastic nut.

7. The extraction experimental device according to claim 1, characterized in that: The second sampling pipe (330) is arranged horizontally, and a switch (331) is arranged on the second sampling pipe (330), and the switch (331) is used to control the connection and disconnection between the second sampling pipe (330) and the phase balance chamber (210).

8. The extraction experimental device according to any one of claims 1 to 7, characterized in that: The phase balance bottle (200) is a wide-mouth bottle, and the extraction experimental device (10) further comprises a sealing plug (500) matched with the wide-mouth bottle.

9. The extraction experimental device according to claim 8, characterized in that: The extraction experimental device (10) further comprises a thermometer (600), and the thermometer (600) is connected to the sealing plug (500), and one end of the thermometer (600) passes through the sealing plug (500).

10. The extraction experimental device according to any one of claims 1 to 7, characterized in that: The extraction experimental device (10) is manufactured by an integrated molding process.

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