A small laboratory extraction column

Abstract

The application discloses a small laboratory extraction column, comprising: a support frame; a light phase tank fixedly connected to the upper middle part of the support frame, a heavy phase tank fixedly connected to the lower middle part of the support frame, an extraction column with one end communicated with the light phase tank and the other end communicated with the heavy phase tank, a paddle assembly slidingly connected to the inner wall of the extraction column, the paddle assembly is used for uniformly dispersing the mixture to better carry out mass transfer extraction; a driving assembly installed on the top of the support frame and driving the paddle assembly to reciprocate up and down along the inner wall of the extraction column. The utility model patent solves the problem of low efficiency of using a separatory funnel, limited contact time and contact area of two phases, and poor extraction effect in the prior art.

Description

Technical Field

[0001] This application relates to a small-scale laboratory extraction tower, belonging to the technical field of chemical experimental equipment. Background Technology

[0002] In laboratory research in fields such as chemistry, chemical engineering, materials science, and biomedicine, it is often necessary to separate and purify complex mixtures to obtain high-purity target products. For example, in organic synthesis experiments, reaction products are often mixed with byproducts and unreacted raw materials, requiring effective separation methods to separate them. Extraction, as an important separation technique, can achieve separation based on the differences in solubility of substances in different solvents.

[0003] However, the commonly used extraction device in laboratories is the separatory funnel. While relatively simple to operate, separatory funnels are inefficient for experiments requiring multiple extractions or continuous operations. Furthermore, the limited contact time and area between the two phases result in poor extraction outcomes. In addition, separatory funnels are prone to emulsification when dealing with easily emulsified systems, making rapid separation of the two phases difficult.

[0004] Therefore, the applicant invented a small laboratory extraction tower to solve the above problems. Summary of the Invention

[0005] The purpose of this application is to provide a small laboratory extraction tower that solves the problems mentioned in the prior art, such as the low efficiency of using a separatory funnel and the limited contact time and contact area between the two phases, which leads to poor extraction results.

[0006] The technical problem to be solved in this application is achieved by the following technical solution: A small laboratory extraction column includes: Support frame; The light phase tank is fixedly connected to the upper middle part of the support frame. The heavy phase tank is fixedly connected to the lower middle part of the support frame. The extraction column is connected at one end to the light phase tank and at the other end to the heavy phase tank. A tactile plate assembly is slidably connected to the inner wall of the extraction column. The tactile plate assembly is used to evenly disperse the mixture to facilitate mass transfer extraction. A drive assembly, mounted on the top of the support frame, drives the clapper assembly to reciprocate up and down along the inner wall of the extraction column.

[0007] Preferably, a heavy phase collection tank and a light phase collection tank are also fixedly connected to the support frame. The heavy phase collection tank is connected to the heavy phase tank through a hose and is used to collect the target heavy phase material after extraction. The light phase collection tank is connected to the light phase tank through a hose and is used to collect the target light phase material after extraction.

[0008] Preferably, the clapper assembly includes: A PTFE shaft passes through the light phase tank and connects to the drive assembly; Multiple clappers are arranged at equal intervals along the axial direction of the PTFE shaft.

[0009] Preferably, the clapper is provided with multiple through holes and multiple semi-circular through holes.

[0010] Preferably, the driving component includes: The motor is mounted on the top of the support frame; The drive shaft is connected to the output shaft of the motor via a coupling; A crank drive mechanism is installed between the drive shaft and the PTFE shaft. The crank drive mechanism is used to convert the rotational motion of the drive shaft into the reciprocating linear motion of the PTFE shaft.

[0011] Preferably, the crank transmission mechanism includes: An eccentric shaft seat is fixedly connected to the drive shaft; An eccentric shaft slider is slidably connected to the eccentric shaft seat, and the center line of the eccentric shaft seat is parallel to and spaced apart from the center line of the eccentric shaft slider, forming a gap; The crank is rotatably connected to the eccentric shaft slider. A coupling is fixedly connected to the PTFE shaft, and the coupling is hinged to the crank. Two adjusting screws are screwed onto the eccentric shaft seat and abut against the eccentric shaft slider. The two adjusting screws together adjust the size of the gap.

[0012] Preferably, two limiting blocks are symmetrically and detachably fixedly connected to the eccentric shaft seat, and two sliding parts are symmetrically arranged on the eccentric shaft slider; the eccentric shaft slider is slidably connected to the two limiting blocks through the two sliding parts.

[0013] Preferably, a first annular liquid distributor is provided inside the light phase tank. The bottom of the first annular liquid distributor is uniformly provided with a plurality of small holes, and the first annular liquid distributor is connected to the heavy phase material inlet provided on the light phase tank.

[0014] Preferably, a second annular liquid distributor is provided inside the heavy phase tank. The top of the second annular liquid distributor is uniformly provided with a plurality of small holes, and the second annular liquid distributor is connected to the light phase material inlet provided on the heavy phase tank.

[0015] The beneficial effects of this application are: 1. Compared with the prior art, this application provides a support frame; a light phase tank fixedly connected to the upper middle part of the support frame; a heavy phase tank fixedly connected to the lower middle part of the support frame; an extraction column with one end connected to the light phase tank and the other end connected to the heavy phase tank; a tapping assembly slidably connected to the inner wall of the extraction column, the tapping assembly being used to uniformly disperse the mixture for better mass transfer extraction; and a drive assembly installed on the top of the support frame, driving the tapping assembly to reciprocate up and down along the inner wall of the extraction column, thus replacing the separatory funnel mentioned in the prior art to achieve better extraction results. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present application; Figure 2 for Figure 1 A magnified structural diagram of A in the middle; Figure 3 This is a structural diagram of the clapper assembly; Figure 4 This is a schematic diagram of the internal structure of a light phase tank; Figure 5 This is a three-dimensional structural diagram of the coupling. Figure 6 This is a schematic diagram showing the positional structure of the eccentric shaft seat and the eccentric shaft slider. Figure 7 This is a schematic diagram of the eccentric shaft slider mechanism.

[0017] In the diagram: 1. Support frame; 2. Light phase tank; 201. Heavy phase material inlet; 202. First annular liquid distributor; 203. Light phase material outlet; 3. First steel pipe support; 4. Extraction column; 401. PTFE shaft; 402. Paddle plate; 403. Through hole; 404. Semi-circular through hole; 5. Heavy phase tank; 501. Light phase material inlet; 502. Heavy phase material outlet; 6. Second steel pipe support; 7. Heavy phase collection tank; 8. Third steel pipe support; 9. Light phase collection tank; 10. Fourth steel pipe support; 11. Motor; 12. Mounting plate; 13. Bearing seat; 14. Drive shaft; 15. Eccentric shaft seat; 16. Eccentric shaft slider; 1601. Sliding joint; 17. Limiting pressure block; 18. Coupling; 19. Crank. Detailed Implementation

[0018] To facilitate a clear understanding of the technical means, creative features, objectives, and effects of this application, the following description, in conjunction with specific illustrations, further elaborates on this application.

[0019] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the equipment or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0020] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0021] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] The following disclosure provides numerous different embodiments or examples for implementing various structures of the embodiments of this application. To simplify the disclosure of the embodiments of this application, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of this application; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in the embodiments of this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0023] like Figure 1-7 As shown, a small laboratory extraction column includes a support frame 1, a light phase tank 2, a heavy phase tank 5, an extraction column 4, a tamper assembly, and a drive assembly.

[0024] Specifically, the support frame 1 is a common steel pipe support frame commonly found in the market, composed of multiple steel pipes connected together. The light phase tank 2 is fixedly connected to the upper middle part of the support frame 1 via a first steel pipe support 3. The first steel pipe support 3 can be fixedly connected to the support frame 1 by welding or screwing. A clamp is welded to the other end of the first steel pipe support 3. The light phase tank 2 is fixedly connected to the first steel pipe support 3 via the clamp. A first annular liquid distributor is provided inside the light phase tank 2. Multiple small holes are evenly provided at the bottom of the distributor 202. The first annular liquid distributor is connected to the heavy phase material inlet 201 provided on the light phase tank 2. The heavy phase tank 5 is fixedly connected to the lower middle part of the support frame 1 via a second steel pipe support 6. A second annular liquid distributor is provided inside the heavy phase tank 5. Multiple small holes are evenly provided at the top of the second annular liquid distributor. The second annular liquid distributor is connected to the light phase material inlet 501 provided on the heavy phase tank 5. One end of the extraction column 4 is connected to the light phase tank 2, and the other end is connected to the heavy phase tank 5. The tamper assembly is slidably connected to the inner wall of the extraction column 4. The tamper assembly 402 is used to evenly disperse the mixture to facilitate mass transfer extraction. The drive assembly is installed on the top of the support frame 1 and drives the tamper assembly 402 to move up and down along the inner wall of the extraction column 4. The support frame 1 is further fixedly connected to a heavy phase collection tank 7 and a light phase collection tank 9 via a third steel pipe support 8 and a fourth steel pipe support 10, respectively. The bottom of the heavy phase collection tank 7 is provided with a heavy phase material outlet 502, which is connected to the heavy phase tank 5 via a flexible hose (not shown in the figure). A switch valve for opening or closing the channel is installed in the flexible hose as needed. The heavy phase collection tank 7 is used to collect the target heavy phase material after extraction. The light phase collection tank 9 is provided with a light phase material outlet 203, which is connected to the light phase tank 2 via a flexible hose (not shown in the figure). A switch valve for opening or closing the channel is installed in the flexible hose as needed. The light phase collection tank 9 is used to collect the target light phase material after extraction. It should be noted that the second, third, and fourth steel pipe supports have the same structure as the first steel pipe support, and will not be described in detail here.

[0025] In a preferred embodiment, the clapper assembly includes: a PTFE shaft 401, which is composed of a 316L stainless steel shaft outer layer and multiple PTFE bushings. The PTFE shaft 401 passes through the light phase tank 2 and is connected to the drive assembly. The PTFE shaft 401 is slidably connected to the light phase tank 2. A sliding seal is provided at the sliding point between the PTFE shaft 401 and the light phase tank 2. The sliding seal is a common sliding seal on the market and is existing technology, so it will not be described in detail here. A clapper 402, in which there are multiple clappers 402. The clappers 402 are made of polytetrafluoroethylene. The multiple clappers 402 are arranged at equal intervals along the axial direction of the PTFE shaft 401 through PTFE shaft 401 bushings of the same specifications. The clapper 402 is provided with multiple through holes 403 and multiple semi-circular through holes 404, so that after the clapper 402 evenly disperses the mixture, it quickly passes through the through holes 403 and semi-circular through holes 404, so as to better carry out mass transfer extraction.

[0026] In a preferred embodiment, the drive assembly includes: a motor 11, which is a common type of motor on the market and is existing technology. Its specific structure and principle will not be elaborated upon. This application uses a precision-engineered variable frequency motor as an example, model 100YS200GY22, with an output power of 200W; 220V 50 / 60HZ, 3P; and a reduction ratio of 1:3H. The motor 11 is fixedly connected to a mounting plate 12, which is fixedly connected to the top of the support frame 1; a transmission shaft 14, which is connected to the output shaft of the motor 11 via a coupling, and is rotatably connected to a bearing seat 13 fixedly connected to the mounting plate 12; and a crank 19 transmission mechanism, installed between the transmission shaft 14 and the PTFE shaft 401. The crank 19 transmission mechanism is used to convert the rotational motion of the transmission shaft 14 into the reciprocating linear motion of the PTFE shaft 401. Specifically, the crank 19 transmission mechanism includes: an eccentric bearing seat 15, which is fixedly connected to the transmission shaft 14, and the rotation axis of the eccentric bearing seat 15 is the same as the axis of the transmission shaft 14; and an eccentric shaft slider 16, which is slidably connected to the eccentric bearing seat 15, with the center line of the eccentric bearing seat 15 and the center line of the eccentric shaft slider 16 being parallel and spaced apart, forming a gap. Specifically, two limiting blocks 17 are symmetrically arranged and detachably fixedly connected on the eccentric bearing seat 15, and two sliding parts 1601 are symmetrically arranged on the eccentric shaft slider 16, and the eccentric shaft slider 16 is slidably connected to the two limiting blocks 17 through the two sliding parts 1601. The limiting pressure block 17; crank 19, with a bearing embedded in the crank 19, the crank 19 being rotatably connected to the eccentric shaft slider 16 via the bearing; connecting shaft 18, the connecting shaft 18 having an external thread structure, the PTFE shaft 401 having an internal thread structure, the connecting shaft 18 being screwed and fixedly connected to the PTFE shaft 401, and the connecting shaft 18 and the crank 19 being hinged via a locating pin; adjusting screws, numbering two and symmetrically arranged; the two adjusting screws are screwed to the eccentric shaft seat 15 and abut against the eccentric shaft slider 16, the size of the gap is adjusted by the two common adjusting screws to adjust the up-and-down oscillation amplitude of the beater 402 assembly.

[0027] Principle: During operation, the heavy phase material is continuously fed from the heavy phase material inlet 201 of the light phase tank 2 and evenly distributed in the tank body by the first annular liquid distributor. Under the action of gravity, the heavy phase material enters the extraction column 4. At the same time, the light phase material is continuously fed from the light phase material inlet 501 of the heavy phase tank 5 and evenly distributed in the tank body by the second annular liquid distributor. Due to the low density of the light phase material, it floats to the extraction column 4 and mixes with the heavy phase material there. During this process, the flapper 402 component slides up and down along the inner wall of the extraction column 4 under the action of the motor 11, evenly dispersing the mixture and improving mass transfer extraction. The extracted heavy phase target material sinks into the heavy phase tank 5 under the action of gravity through the through hole 403 and the semi-circular through hole 404, and then flows from the heavy phase tank 5 into the heavy phase collection tank 7 through the pipeline. The extracted light phase target material floats to the light phase tank 2 and then flows from the light phase tank 2 into the light phase collection tank 9 through the pipeline.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this application. Those skilled in the art should understand that this application is not limited to the above embodiments, and various changes and modifications can be made without departing from the spirit and scope of this application; all such changes and modifications fall within the scope of the claims. The scope of protection of this application is defined by the appended claims and their equivalents.

Claims

1. A small-scale laboratory extraction tower, characterized in that, include: Support frame; The light phase tank is fixedly connected to the upper middle part of the support frame. The heavy phase tank is fixedly connected to the lower middle part of the support frame. The extraction column is connected at one end to the light phase tank and at the other end to the heavy phase tank. A tactile plate assembly is slidably connected to the inner wall of the extraction column. The tactile plate assembly is used to evenly disperse the mixture to facilitate mass transfer extraction. A drive assembly, mounted on the top of the support frame, drives the clapper assembly to reciprocate up and down along the inner wall of the extraction column.

2. The small-scale laboratory extraction tower according to claim 1, characterized in that: The support frame is also fixedly connected to a heavy phase collection tank and a light phase collection tank. The heavy phase collection tank is connected to the heavy phase tank through a hose and is used to collect the target heavy phase material after extraction. The light phase collection tank is connected to the light phase tank through a hose and is used to collect the target light phase material after extraction.

3. A small-scale laboratory extraction tower according to claim 2, characterized in that: The clapper assembly includes: A PTFE shaft passes through the light phase tank and connects to the drive assembly; Multiple clappers are arranged at equal intervals along the axial direction of the PTFE shaft.

4. A small-scale laboratory extraction tower according to claim 3, characterized in that: The clapper is provided with multiple through holes and multiple semi-circular through holes.

5. A small-scale laboratory extraction tower according to claim 3 or 4, characterized in that, The driving component includes: The motor is mounted on the top of the support frame; The drive shaft is connected to the output shaft of the motor via a coupling; A crank drive mechanism is installed between the drive shaft and the PTFE shaft. The crank drive mechanism is used to convert the rotational motion of the drive shaft into the reciprocating linear motion of the PTFE shaft.

6. A small-scale laboratory extraction tower according to claim 5, characterized in that, The crank transmission mechanism includes: An eccentric shaft seat is fixedly connected to the drive shaft; An eccentric shaft slider is slidably connected to the eccentric shaft seat, and the center line of the eccentric shaft seat is parallel to and spaced apart from the center line of the eccentric shaft slider, forming a gap; The crank is rotatably connected to the eccentric shaft slider. A coupling is fixedly connected to the PTFE shaft, and the coupling is hinged to the crank. Two adjusting screws are screwed onto the eccentric shaft seat and abut against the eccentric shaft slider. The two adjusting screws together adjust the size of the gap.

7. A small-scale laboratory extraction tower according to claim 6, characterized in that: The eccentric shaft seat has two symmetrically detachable and fixedly connected limit blocks, and the eccentric shaft slider has two symmetrically arranged sliding joints; the eccentric shaft slider is slidably connected to the two limit blocks through the two sliding joints.

8. A small-scale laboratory extraction tower according to claim 7, characterized in that: The light phase tank is equipped with a first annular liquid distributor. The bottom of the first annular liquid distributor is uniformly provided with a plurality of small holes. The first annular liquid distributor is connected to the heavy phase material inlet provided on the light phase tank.

9. A small-scale laboratory extraction tower according to claim 8, characterized in that: The heavy phase tank is equipped with a second annular liquid distributor. The top of the second annular liquid distributor is uniformly provided with a plurality of small holes. The second annular liquid distributor is connected to the light phase material inlet provided on the heavy phase tank.

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