Extraction device

Abstract

The utility model relates to an extraction device. Specifically, the utility model provides an extraction device which comprises a liquid tank, a thin pipe and a liquid pipe, the extraction device disclosed by the utility model is convenient for judging the separation of two immiscible phases, so that the separation of the two immiscible phases is effectively realized.

Description

Technical Field

[0001] The utility model relates to the field of chemical medicine, and in particular to an extraction device. Background Art

[0002] Liquid-liquid extraction is a common operation in the chemical and pharmaceutical fields. Liquid-liquid extraction, also known as solvent extraction or extraction, is the process of separating and extracting components in a liquid mixture using a liquid solvent. An immiscible solvent is added to the liquid mixture, and the different solubilities of its components in the solvent are utilized to achieve the purpose of separation or extraction. For example, n-butanol is used to extract the active ingredients of a drug from an aqueous extract of traditional Chinese medicine.

[0003] The separation of two immiscible phases in existing extraction devices mainly relies on manual visual observation. However, manual visual observation is affected by factors such as personnel operating experience, and large errors are prone to occur in the judgment of the separation point of the two immiscible phases. In particular, large errors are more likely to occur in the judgment of the separation point of the two immiscible phases with a small color difference, which can easily lead to problems such as the upper liquid phase flowing into the collected lower liquid phase, making it difficult to effectively achieve the separation of the two immiscible phases.

[0004] Therefore, there is a need in the art to develop an extraction device that is convenient for determining the separation of immiscible two phases. Utility Model Content

[0005] The utility model aims to provide an extraction device, which is convenient for determining the separation of two immiscible phases.

[0006] In a first aspect, the present invention provides an extraction device, comprising a liquid tank 1, a capillary tube 2, and a liquid tube 3;

[0007] One end of the capillary tube is an open end, and the other end of the capillary tube is a closed end. The open end of the capillary tube is connected to the bottom of the liquid tank and communicates with the tank cavity of the liquid tank. A through hole 4 is provided on the side wall of the capillary tube.

[0008] One end of the liquid tube is connected to the bottom of the liquid tank, and the other end of the liquid tube is connected to the through hole on the side wall of the capillary tube. A sliding plate 5 is provided in the lumen of the capillary tube, and the sliding plate is sealed to the inner wall of the lumen of the capillary tube. The lower surface of the sliding plate is connected to the inner wall of the closed end of the capillary tube via a return spring 6.

[0009] The lower plate surface of the sliding plate is located above the through hole on the side wall of the capillary tube, and the lower plate surface of the sliding plate is in contact with the through hole on the side wall of the capillary tube;

[0010] A first liquid outlet pipe 7 is provided on the closed end of the capillary tube, and a first valve 8 is provided on the first liquid outlet pipe. A second liquid outlet pipe 9 is provided on the bottom of the liquid tank, and a second valve 10 is provided on the second liquid outlet pipe.

[0011] Preferably, the extraction device comprises a liquid-liquid extraction device.

[0012] Preferably, the bottom wall of the liquid tank is a plane wall.

[0013] Preferably, the bottom wall of the liquid tank is parallel to the horizontal plane.

[0014] Preferably, the connection point between the open end of the capillary tube and the bottom of the liquid tank and the connection point between one end of the liquid tube and the bottom of the liquid tank are located on the same horizontal plane.

[0015] Preferably, the open end of the thin tube is vertically connected to the bottom of the liquid tank.

[0016] Preferably, one end of the liquid pipe is vertically connected to the bottom of the liquid tank.

[0017] Preferably, the lower surface of the sliding plate is vertically connected to the inner wall of the closed end of the capillary tube via a return spring.

[0018] Preferably, the lower surface of the sliding plate is vertically connected to the return spring.

[0019] Preferably, the thin tube includes a cylindrical tube or a square tube.

[0020] Preferably, the lumen of the capillary tube is a cylindrical lumen or a cubic lumen.

[0021] Preferably, the thin tube is a transparent thin tube.

[0022] Preferably, scale lines are provided on the side wall of the capillary tube.

[0023] Preferably, the scale lines are arranged vertically along the side wall of the capillary tube.

[0024] Preferably, the scale lines can facilitate display of the sliding of the sliding plate in the thin tube.

[0025] Preferably, the sliding plate comprises a sliding plug.

[0026] Preferably, the sliding plate is a cylindrical plate or a cubic plate.

[0027] Preferably, the upper and lower surfaces of the sliding plate are flat plates.

[0028] Preferably, the upper and lower surfaces of the sliding plate are parallel to the horizontal plane.

[0029] Preferably, the sliding plate can slide along the inner wall of the lumen of the thin tube.

[0030] Preferably, the sliding plate can slide freely along the inner wall of the lumen of the thin tube.

[0031] Preferably, the closed end of the capillary tube is located below the through hole.

[0032] Preferably, when no liquid is added to the liquid tank, the lower surface of the sliding plate is located above the through hole on the side wall of the capillary tube, and the lower surface of the sliding plate is in contact with the through hole on the side wall of the capillary tube.

[0033] Preferably, the other end of the liquid tube is communicated with a through hole on the side wall of the capillary tube.

[0034] Preferably, the tube opening at the other end of the liquid tube is communicated with the through hole on the tube side wall of the capillary tube.

[0035] Preferably, the lumen of the liquid tube is a cylindrical cavity or a cubic cavity.

[0036] Preferably, the liquid tube is a transparent tube.

[0037] Preferably, the liquid pipe is an "L"-shaped pipe.

[0038] Preferably, the narrow tube has the same lumen as that of the liquid tube.

[0039] Preferably, the lower surface of the sliding plate contacts the top of the through hole on the side wall of the capillary tube.

[0040] Preferably, the through hole is a circular hole or a square hole.

[0041] Preferably, one end of the liquid tube is communicated with the tank cavity of the liquid tank.

[0042] Preferably, a pipe opening at one end of the liquid pipe is connected to the tank bottom of the liquid tank.

[0043] Preferably, a pipe opening at one end of the liquid pipe is communicated with the tank cavity of the liquid tank.

[0044] Preferably, the tube opening at the other end of the liquid tube is connected to the through hole on the tube side wall of the capillary tube.

[0045] Preferably, the other end of the liquid tube is communicated with the lumen of the capillary tube.

[0046] Preferably, during the liquid-liquid extraction process in the liquid tank, the sliding plate is located in the lumen of the capillary tube.

[0047] Preferably, the sliding plate is located in the lumen of the capillary tube and below the bottom of the material tank.

[0048] Preferably, the height between the sliding plate and the bottom of the material tank is 1 / 3-3 / 4 of the height of the capillary tube.

[0049] Preferably, during the liquid-liquid extraction process in the liquid tank, the sliding plate is located in the lumen of the capillary tube and below the bottom of the material tank.

[0050] Preferably, during the liquid-liquid extraction process in the liquid tank, the height between the sliding plate and the bottom of the material tank is 1 / 3-3 / 4 of the height of the capillary tube.

[0051] Preferably, the liquid tank is a cubic tank or a cylindrical tank.

[0052] Preferably, the liquid tank is further provided with a liquid inlet pipe.

[0053] Preferably, the liquid inlet pipe is located above the liquid tank.

[0054] Preferably, a third valve is further provided on the liquid inlet pipe.

[0055] Preferably, the liquid tank further comprises a heater.

[0056] Preferably, the heater is capable of heating the tank cavity of the liquid tank.

[0057] Preferably, the liquid tank further comprises a stirrer.

[0058] Preferably, the stirrer is capable of stirring the tank cavity of the liquid tank.

[0059] Preferably, the first valve comprises a liquid control valve.

[0060] Preferably, the connection or connection includes communication.

[0061] Preferably, the connection or connection is a fixed connection or a detachable connection.

[0062] It should be understood that within the scope of the present invention, the above-mentioned technical features of the present invention and the technical features specifically described below (such as embodiments) can be combined with each other to form new or preferred technical solutions. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] It should be understood that the drawings are for illustrative purposes only and should not be construed as limitations on this patent; in order to better illustrate this embodiment, certain components of the drawings may be omitted, enlarged, or reduced in size and do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that certain well-known structures and their descriptions may be omitted in the drawings; identical or similar reference numerals correspond to identical or similar components; and the terms describing positional relationships in the drawings are for illustrative purposes only and should not be construed as limitations on this patent.

[0064] Figure 1 This is a schematic structural diagram of an extraction device according to a preferred embodiment of the present invention.

[0065] Wherein, each number in the accompanying drawings represents:

[0066] 1 is a liquid tank, 2 is a capillary tube, 3 is a liquid tube, 4 is a through hole, 5 is a sliding plate, 6 is a return spring, 7 is a first liquid outlet pipe, 8 is a first valve, 9 is a second liquid outlet pipe and 10 is a second valve. DETAILED DESCRIPTION

[0067] After extensive and in-depth research, the inventors have developed an extraction device comprising a liquid tank, a capillary tube, and a liquid tube. The extraction device of the utility model facilitates the determination of the separation of two immiscible phases, thereby effectively achieving the separation of the two immiscible phases.

[0068] the term

[0069] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0070] As used herein, the terms "include," "comprise," and "contain" are used interchangeably to encompass not only open definitions but also semi-closed and closed definitions. In other words, the terms encompass "consisting of," "consisting essentially of."

[0071] As used herein, the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are merely for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0072] As used herein, the terms "first," "second," etc., are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly specifying the quantity of the technical features indicated. Thus, the terms "first," "second," etc., may explicitly or implicitly include one or more of the features.

[0073] As used herein, the terms "connect" and "connected" should be understood in a broad sense, and may refer to fixed connection or connection, detachable connection or connection, or integral connection or connection.

[0074] For the sake of convenience, the following Figure 1 To further describe the present invention, it should be understood that the accompanying drawings do not limit the scope of the present invention.

[0075] The utility model provides an extraction device, which includes a liquid tank 1, a capillary tube 2 and a liquid tube 3;

[0076] One end of the capillary tube is an open end, and the other end of the capillary tube is a closed end. The open end of the capillary tube is connected to the bottom of the liquid tank and communicates with the tank cavity of the liquid tank. A through hole 4 is provided on the side wall of the capillary tube.

[0077] One end of the liquid tube is connected to the bottom of the liquid tank, and the other end of the liquid tube is connected to the through hole on the side wall of the capillary tube. A sliding plate 5 is provided in the lumen of the capillary tube, and the sliding plate is sealed to the inner wall of the lumen of the capillary tube. The lower surface of the sliding plate is connected to the inner wall of the closed end of the capillary tube via a return spring 6.

[0078] The lower plate surface of the sliding plate is located above the through hole on the side wall of the capillary tube, and the lower plate surface of the sliding plate is in contact with the through hole on the side wall of the capillary tube;

[0079] A first liquid outlet pipe 7 is provided on the closed end of the capillary tube, and a first valve 8 is provided on the first liquid outlet pipe. A second liquid outlet pipe 9 is provided on the bottom of the liquid tank, and a second valve 10 is provided on the second liquid outlet pipe.

[0080] The extraction device of the present invention can facilitate the determination of the separation of two immiscible phases, thereby effectively achieving the separation of the two immiscible phases. A typical working principle is as follows:

[0081] (1) After liquid-liquid extraction is performed in the liquid tank, two immiscible liquids (such as aqueous liquid and organic liquid) are separated into upper and lower layers in the liquid tank, the upper layer being a liquid phase with low density, and the lower layer being a liquid phase with high density, and the liquid tube, the tube cavity between the lower plate surface of the sliding plate and the closed end of the capillary tube, and the tube cavity between the upper plate surface of the sliding plate and the open end of the capillary tube are filled with the lower layer phase with high density. At this time, compared with the case where no liquid is added to the liquid tank, the sliding plate in the tube cavity of the capillary tube will move a distance toward the tank cavity of the liquid tank due to buoyancy;

[0082] (2) Then, after opening the first valve on the first liquid outlet pipe, the lower phase flows out from the first liquid outlet pipe for collection. When the liquid tank contains the lower phase, the buoyancy of the sliding plate in the tube cavity of the capillary tube remains unchanged during the lower phase flowing out from the first liquid outlet pipe. Therefore, the position of the sliding plate in the tube cavity of the capillary tube remains unchanged. When the lower phase in the liquid tank is separated in the liquid tank (that is, when the liquid tank begins to no longer contain the lower phase), the upper phase with low density begins to flow into the liquid tube. At this time, due to the liquid phase with low density flowing into the liquid tube, the capillary tube The buoyancy of the sliding plate within the lumen begins to decrease, and the sliding plate begins to move in the direction of the return spring. Therefore, the movement of the sliding plate in the direction of the return spring indicates that the lower phase in the liquid tank has been completely separated. At this time, the first valve on the first liquid outlet pipe is closed to prevent the upper phase from entering the collected lower phase, thereby achieving effective and accurate separation of the lower phase. Therefore, after liquid-liquid extraction, simply observing the sliding plate begin to move in the direction of the return spring can be used to accurately determine that the lower phase in the liquid tank has been completely separated. After the lower phase is separated from the liquid tank, only the upper phase remains in the liquid tank. The second valve on the second liquid outlet pipe is opened to collect the upper phase in the liquid tank.

[0083] It should be understood in the present invention that, compared with the tank cavity volume of the liquid tank, the lumen volumes of the thin tube and the liquid tube can be set to be negligible.

[0084] The tank bottom wall of the liquid tank of the utility model can be a plane wall, and the liquid tank can be a cubic tank or a cylindrical tank.

[0085] In a preferred example of the present invention, the connection between the open end of the capillary tube and the bottom of the liquid tank and the connection between one end of the liquid tube and the bottom of the liquid tank are located on the same horizontal plane.

[0086] The tube lumens of the capillary tube and the liquid tube of the present invention can be cylindrical or cubical. Preferably, the capillary tube is a transparent capillary tube, through which the sliding of the sliding plate on the inner wall of the tube lumen of the capillary tube can be easily observed.

[0087] In a preferred example of the present invention, scale lines are provided on the side wall of the capillary tube, and the scale lines can be arranged up and down along the side wall of the capillary tube, and the scale lines can easily display the sliding of the sliding plate in the capillary tube.

[0088] The liquid tank of the present invention may further include an agitator capable of stirring the tank cavity. When two immiscible liquids are added to the tank, the agitator may be used to thoroughly stir the liquid before allowing the liquid to stand and separate, thereby improving extraction efficiency. The components of the agitator of the present invention are not particularly limited and include (but are not limited to) a stirring blade, etc.

[0089] The main excellent technical effects of this utility model include:

[0090] 1. The utility model develops an extraction device, which facilitates the separation of two immiscible phases, thereby effectively achieving the separation of the two immiscible phases.

[0091] 2. The structure and operation of the extraction device of the utility model are simple, which is conducive to industrial production.

[0092] The present invention will be further described below with reference to specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0093] Example 1

[0094] This embodiment 1 provides an extraction device, which includes a liquid tank 1, a capillary tube 2 and a liquid tube 3;

[0095] One end of the capillary tube is an open end, and the other end of the capillary tube is a closed end. The open end of the capillary tube is connected to the bottom of the liquid tank and communicates with the tank cavity of the liquid tank. A through hole 4 is provided on the side wall of the capillary tube.

[0096] One end of the liquid tube is connected to the bottom of the liquid tank, and the other end of the liquid tube is connected to the through hole on the side wall of the capillary tube. A sliding plate 5 is provided in the lumen of the capillary tube, and the sliding plate is sealed to the inner wall of the lumen of the capillary tube. The lower surface of the sliding plate is connected to the inner wall of the closed end of the capillary tube via a return spring 6.

[0097] The lower plate surface of the sliding plate is located above the through hole on the side wall of the capillary tube, and the lower plate surface of the sliding plate is in contact with the through hole on the side wall of the capillary tube;

[0098] A first liquid outlet pipe 7 is provided on the closed end of the capillary tube, and a first valve 8 is provided on the first liquid outlet pipe. A second liquid outlet pipe 9 is provided on the bottom of the liquid tank, and a second valve 10 is provided on the second liquid outlet pipe.

[0099] The tank bottom wall of the liquid tank is a plane wall.

[0100] The extraction device described in Example 1 facilitates the determination of the separation of two immiscible phases, thereby effectively achieving the separation of the two immiscible phases. The specific working principle is as follows:

[0101] After liquid-liquid extraction is performed in the liquid tank, the two immiscible liquids are separated into upper and lower layers in the liquid tank. After the first valve on the first liquid outlet pipe is opened, the lower phase with a larger density flows out from the first liquid outlet pipe for collection. When the liquid tank contains the lower phase, the position of the sliding plate in the lumen of the capillary tube remains unchanged during the process of the lower phase flowing out of the first liquid outlet pipe. When the lower phase in the liquid tank is separated in the liquid tank (that is, when the liquid tank begins to no longer contain the lower phase), the upper phase with a smaller density begins to flow into the liquid tube. At this time, due to the inflow of the density phase into the liquid tube, the upper phase with a smaller density begins to flow into the liquid tube. When the liquid phase is small, the buoyancy of the sliding plate in the lumen of the capillary tube begins to decrease, and the sliding plate begins to move in the direction of the return spring. The movement of the sliding plate in the direction of the return spring indicates that the lower phase in the liquid tank has been separated. Therefore, simply by observing that the sliding plate begins to move in the direction of the return spring, it can be used to accurately determine that the lower phase in the liquid tank has been separated. At this time, the first valve on the first liquid outlet pipe is closed to prevent the upper phase from entering the collected lower phase, thereby achieving effective and accurate separation of the lower phase. After the lower phase is separated from the liquid tank, the liquid tank only contains the upper phase. The second valve on the second liquid outlet pipe is opened to collect the upper phase in the liquid tank.

[0102] Therefore, the extraction device described in this embodiment 1 can facilitate the separation of two immiscible phases, thereby effectively achieving the separation of the two immiscible phases.

[0103] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. An extraction device, characterized in that: The device comprises a liquid tank (1), a thin tube (2) and a liquid tube (3); One end of the capillary tube is an open end, and the other end of the capillary tube is a closed end. The open end of the capillary tube is connected to the bottom of the liquid tank and communicates with the tank cavity of the liquid tank. A through hole (4) is provided on the side wall of the capillary tube. One end of the liquid tube is connected to the bottom of the liquid tank, and the other end of the liquid tube is connected to the through hole on the side wall of the capillary tube. A sliding plate (5) is provided in the lumen of the capillary tube, and the sliding plate is sealed to the inner wall of the lumen of the capillary tube. The lower surface of the sliding plate is connected to the inner wall of the closed end of the capillary tube via a return spring (6). The lower plate surface of the sliding plate is located above the through hole on the side wall of the capillary tube, and the lower plate surface of the sliding plate is in contact with the through hole on the side wall of the capillary tube; A first liquid outlet pipe (7) is provided on the closed end of the capillary tube, a first valve (8) is provided on the first liquid outlet pipe, a second liquid outlet pipe (9) is provided on the bottom of the liquid tank, and a second valve (10) is provided on the second liquid outlet pipe; The capillary tube is a transparent capillary tube, and scale lines are arranged on the side wall of the capillary tube.

2. The extraction device according to claim 1, characterized in that The tank bottom wall of the liquid tank is a plane wall.

3. The extraction device according to claim 1, wherein The lumen of the capillary tube is a cylindrical lumen or a cubic lumen.

4. The extraction device according to claim 1, characterized in that The sliding plate can slide freely along the inner wall of the lumen of the thin tube.

5. The extraction device according to claim 1, wherein The liquid tube is a transparent tube.

6. The extraction device according to claim 1, wherein The narrow tube has the same lumen as that of the liquid tube.

7. The extraction device according to claim 1, characterized in that The lower plate surface of the sliding plate contacts the top of the through hole on the tube side wall of the capillary tube.

8. The extraction device according to claim 1, wherein The liquid tank is a cubic tank or a cylindrical tank.

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