Shaft radial dynamic extraction column

Abstract

The utility model belongs to the technical field of separation equipment, especially, relate to a shaft radial dynamic extraction tower. The utility model discloses in view of the problem that the tray can only make single direction movement in prior art, provide a kind of shaft radial dynamic extraction tower, including the tower body with extraction chamber in inside, extraction chamber is equipped with main shaft, one end of main shaft is drivenly connected with driving motor, main shaft is also fixedly connected with tray, driving motor and main shaft between still be equipped with the drive box for power transmission, drive box is also equipped with eccentric swash plate assembly, rotating eccentric swash plate assembly can drive main shaft reciprocating motion along axial direction. The utility model is equipped with the eccentric swash plate assembly that can drive main shaft reciprocating motion along axial direction when rotating in drive box, so that during extraction process, tray can rotate simultaneously and axial movement, give full play to extraction tower inner space, the strong shear force generated promotes dispersed phase in continuous phase repeatedly dispersed polymerization, promotes solute transfer, to improve mass transfer efficiency, realize efficient separation.

Description

Technical Field

[0001] This utility model belongs to the field of separation equipment technology, and in particular relates to an axial-radial dynamic extraction tower. Background Technology

[0002] An extraction tower is a commonly used liquid-liquid mass transfer device in the chemical industry, petroleum refining, fine chemicals, pharmaceuticals, and pesticide intermediates. It extracts one or more compounds from a mixed solution using a solvent that is immiscible with the solution. The extraction tower separates, enriches, and purifies these compounds through its internal components, trays, or packing. Currently, commonly used types include packed extraction towers, sieve plate extraction towers, rotary disc extraction towers, and vibrating disc extraction towers. While existing technologies like rotary disc extraction towers increase axial shear force through rotation, and vibrating disc extraction towers increase radial shear force through reciprocating motion, both only allow for unidirectional movement and cannot effectively utilize the internal space of the extraction tower. Therefore, extraction efficiency and effectiveness still need further improvement.

[0003] For example, a Chinese utility model patent discloses a rotary disc extraction tower [application number: 200910035622.7]. This utility model patent includes a tower body, a rotating shaft, a rotator, a power mechanism, an upper settling tank with a heavy phase inlet and a light phase outlet, a lower settling tank with a light phase inlet and a heavy phase outlet, and diaphragms with through holes distributed on the disc surface. The rotating shaft is located inside the tower body and is connected to the power mechanism. The power mechanism is located at the top of the upper settling tank, which is connected to the upper part of the tower body, while the lower settling tank is connected to the lower part of the tower body. The unit comprises a rotating device fixed at intervals on a rotating shaft, with partitions spaced at intervals along the height direction of the rotating shaft. The center of each partition is fitted onto the rotating shaft, while the perimeter is fixed to the inner wall of the tower body. A rotating device is provided between every two adjacent partitions. The rotating device is characterized by comprising a blade seat and a first blade and a second blade. The blade seat is fixed on the rotating shaft, and the first blade and the second blade are formed on the blade seat. Furthermore, the first blade and the second blade are distributed alternately, and the orientations of the first inclination angle on the first blade and the second inclination angle on the second blade are opposite to each other.

[0004] The utility model patent provides a traditional rotary extraction tower structure, which can only increase the axial shear force by rotation, and still has the above-mentioned problems. Utility Model Content

[0005] The purpose of this invention is to address the above-mentioned problems by providing an axial-radial dynamic extraction tower.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A radial dynamic extraction tower includes a tower body with an extraction chamber inside. A main shaft is provided in the extraction chamber. One end of the main shaft is driven and connected to a drive motor. A tray is also fixedly connected to the main shaft. A drive box for power transmission is provided between the drive motor and the main shaft. An eccentric swashplate assembly is provided in the drive box. Rotating the eccentric swashplate assembly can drive the main shaft to reciprocate along the axial direction.

[0008] In the aforementioned axial-radial dynamic extraction tower, the drive box includes an outer shell with an internal installation space. A drive shaft and a driven shaft are mounted on the outer shell and are circumferentially fixed and axially slidably connected. The drive shaft is driven and connected to a drive motor, and the driven shaft is driven and connected to a main shaft. The eccentric swashplate assembly is located within the installation space and connected to the driven shaft.

[0009] In the aforementioned axial-radial dynamic extraction tower, the end of the drive shaft near the driven shaft has an inwardly recessed groove, one end of the driven shaft extends into the groove, and there is a telescoping space between the end of the driven shaft and the bottom of the groove.

[0010] In the aforementioned axial-radial dynamic extraction tower, the eccentric swashplate assembly includes two eccentric disks fixedly connected to the outer surface of the driven shaft and a rocker arm assembly sleeved on the outside of the driven shaft. The two sides of the rocker arm assembly are respectively connected to the eccentric disks through thrust bearings.

[0011] In the aforementioned axial-radial dynamic extraction tower, the swing arm assembly includes a collar and a swing arm fixedly connected to the collar. The collar is connected to a driven shaft or eccentric disk via a needle roller bearing. One end of the swing arm is a free end, and the other end is provided with a swing ball, which is rotatably connected to the outer shell.

[0012] In the aforementioned axial-radial dynamic extraction tower, the swing arm assembly further includes a long guide groove formed on the side of the outer shell, and a bearing is connected to the free end, which is located in the guide groove and is slidably connected to the guide groove through the bearing.

[0013] In the aforementioned axial-radial dynamic extraction tower, the eccentric disk includes an integrally formed connecting part and a deflecting part. The driven shaft passes through the connecting part, and the deflecting part is inclined along the axis of the driven shaft. The phase angles of the two eccentric disks differ by 180 degrees.

[0014] In the aforementioned axial-radial dynamic extraction tower, the tower body is further provided with a light liquid inlet, a heavy liquid inlet, a light liquid outlet, and a heavy liquid outlet that are connected to the extraction chamber. The light liquid inlet and the heavy liquid outlet are located in the lower half of the tower body, and the heavy liquid inlet and the light liquid outlet are located in the upper half of the tower body.

[0015] In the aforementioned axial-radial dynamic extraction column, several trays are arranged parallel to each other and sequentially along the axis of the main shaft, with equal distances between adjacent trays.

[0016] In the aforementioned axial-radial dynamic extraction column, the tray includes a tray body, a shaft hole penetrating the tray body is provided at the center of the tray body, the main shaft is connected to the shaft hole, and the tray body is also provided with a plurality of convection holes, the convection holes penetrating the tray body and the diameters of the convection holes being different.

[0017] Compared with existing technologies, the advantages of this utility model are:

[0018] 1. This invention features an eccentric swashplate assembly within the drive housing, which, when rotated, drives the main shaft to reciprocate axially. This allows the tray to simultaneously rotate and move axially during the extraction process. This enables movement in both axial and radial directions, fully utilizing the space within the extraction column. The resulting strong shear force promotes repeated dispersion and polymerization of the dispersed phase within the continuous phase, facilitating solute transfer and thus improving mass transfer efficiency for highly efficient separation. Furthermore, it eliminates eddies caused by a single motion trajectory.

[0019] 2. This utility model has convection holes of different diameters on the disc body to enhance the vortex and dispersion effect of the two liquids flowing in opposite directions in the tower, thereby achieving higher mass transfer efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of the drive box;

[0022] Figure 3 It is a cross-sectional view of the drive box and eccentric swashplate assembly;

[0023] Figure 4 This is a cross-sectional view of the eccentric swashplate assembly from another angle;

[0024] Figure 5 It is a 3D view of the drive box;

[0025] Figure 6 This is a partial structural diagram of the tower tray;

[0026] In the diagram: Extraction chamber 1, Tower body 2, Main shaft 3, Drive motor 4, Tray 5, Drive box 6, Eccentric slant plate assembly 7, Light liquid inlet 8, Heavy liquid inlet 9, Light liquid outlet 10, Heavy liquid outlet 11, Plate body 51, Shaft hole 52, Convection hole 53, Installation space 61, Outer shell 62, Drive shaft 63, Driven shaft 64, Groove 65, Telescopic space 66, Eccentric plate 71, Swing rod assembly 72, Thrust bearing 73, Connecting part 711, Deflection part 712, Collar 721, Swing rod 722, Free end 723, Swing ball 724, Guide groove 725, Bearing 726, Needle roller bearing 727. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0028] Combination Figure 1 and Figure 2 As shown, an axial-radial dynamic extraction tower includes a tower body 2 with an extraction chamber 1 inside. A main shaft 3 is provided inside the extraction chamber 1. One end of the main shaft 3 is driven and connected to a drive motor 4. A tray 5 is also fixedly connected to the main shaft 3. A drive box 6 for power transmission is also provided between the drive motor 4 and the main shaft 3. An eccentric swashplate assembly 7 is also provided inside the drive box 6. Rotating the eccentric swashplate assembly 7 can drive the main shaft 3 to reciprocate along the axial direction.

[0029] In this invention, during use, the drive motor 4 drives the main shaft 3 to rotate via the drive housing 6, thereby causing the tray 5, which is fixedly connected to the main shaft 3, to also rotate. Simultaneously, since the drive housing 6 also contains an eccentric swashplate assembly 7, when the eccentric swashplate assembly 7 rotates synchronously, it drives the main shaft 3 to reciprocate axially, thus causing the tray 5 to repeatedly move along the axis of the main shaft 3. Therefore, this invention, by including an eccentric swashplate assembly 7 within the drive housing 6 that drives the main shaft 3 to reciprocate axially during rotation, allows the tray 5 to simultaneously rotate and move axially during the extraction process. This achieves movement in both axial and radial directions, fully utilizing the space within the extraction tower. The resulting strong shear force promotes repeated dispersion and polymerization of the dispersed phase within the continuous phase, facilitating solute transfer and improving mass transfer efficiency for highly efficient separation. Furthermore, it eliminates eddies caused by a single motion trajectory.

[0030] Preferably, several trays 5 are arranged parallel to each other and sequentially along the axis of the main shaft 3, with equal distances between adjacent trays 5. This allows the radial or axial shear forces generated by the rotation or movement of the trays 5 to be distributed relatively evenly throughout the extraction chamber 1.

[0031] like Figure 6As shown, the tray 5 includes a tray body 51, with a shaft hole 52 penetrating the center of the tray body 51. The main shaft 3 is connected within the shaft hole 52. The tray body 51 also has several convection holes 53, which penetrate the tray body 51 and have different diameters. That is, the diameter of the convection holes 53 is not uniform. This invention uses convection holes 53 of varying diameters on the tray body 51 to enhance the vortex and dispersion effect of the two countercurrent liquids within the column, thereby achieving higher mass transfer efficiency.

[0032] Combination Figure 2 and Figure 3 As shown, the drive housing 6 includes an outer shell 62 with an internal installation space 61. A drive shaft 63 and a driven shaft 64, circumferentially fixed and axially slidingly connected, are mounted on the outer shell 62. The drive shaft 63 is driven by a drive motor 4, and the driven shaft 64 is driven by a main shaft 3. The eccentric swashplate assembly 7 is located within the installation space 61 and connected to the driven shaft 64. This invention does not limit the specific implementation of the circumferentially fixed and axially sliding connection; commonly used connection structures in the prior art can be adopted, such as spline connections. The key is to ensure that the drive shaft 63 and driven shaft 64 are relatively fixed during circumferential rotation for synchronized rotation, while simultaneously allowing relative sliding motion in the axial direction, so that the drive shaft 63 does not move synchronously when the driven shaft 64 moves axially.

[0033] Specifically, the drive shaft 63 has an inwardly recessed groove 65 at one end near the driven shaft 64, and one end of the driven shaft 64 extends into the groove 65, with a telescopic space 66 between the end of the driven shaft 64 and the bottom of the groove 65. The groove 65, in conjunction with the end of the driven shaft 64, provides a guiding function when the driven shaft 64 slides. The telescopic space 66 ensures that the driven shaft 64 has space to slide relative to the drive shaft 63.

[0034] Combination Figure 2-5 As shown, the eccentric swashplate assembly 7 includes two eccentric disks 71 fixedly connected to the outer surface of the driven shaft 64 and a rocker arm assembly 72 sleeved on the outside of the driven shaft 64. The two sides of the rocker arm assembly 72 are respectively connected to the eccentric disks 71 through thrust bearings 73.

[0035] Specifically, the rocker arm assembly 72 includes a collar 721 and a rocker arm 722 fixedly connected to the collar 721. The collar 721 is connected to the driven shaft 64 or the eccentric disk 71 through a needle roller bearing 727. One end of the rocker arm 722 is a free end 723, and the other end is provided with a pendulum ball 724, which is rotatably connected to the outer shell 62.

[0036] Preferably, the rocker arm assembly 72 further includes a long, narrow guide groove 725 formed on the side of the outer casing 62, and a bearing 726 is connected to the free end 723. The free end 723 is located within the guide groove 725 and is slidably connected to the guide groove 725 via the bearing 726. This reduces the friction between the free end 723 and the guide groove 725.

[0037] like Figure 2 As shown, the eccentric disk 71 includes an integrally formed connecting part 711 and a deflecting part 712. The driven shaft 64 passes through the connecting part 711. The deflecting part 712 is inclined along the axis of the driven shaft 64. The phase angles of the two eccentric disks 71 differ by 180 degrees.

[0038] In use, the driven shaft 64 rotates, causing the eccentric disk 71 to rotate synchronously. Since the driven shaft 64 is eccentrically mounted on the connecting part 711, and the deflecting part 712 is an inclined structure along the axis of the driven shaft 64, the projections of one end and the other end of the deflecting part 712 onto the driven shaft 64 have a positional difference along the axis. Thus, when the deflecting part 712 rotates, it can push the collar 721 to swing via the thrust bearing 73, thereby causing the driven shaft 64 to move along the axis. The two eccentric disks 71 have a 180-degree phase angle difference, allowing the thrust generated by the two deflecting parts 712 on both sides of the collar 721 to alternate, thus enabling the collar 721 to reciprocate. At this time, the pendulum ball 724 rotates relative to the outer shell 62, and the free end 723 moves repeatedly along the guide groove 725, which guides its movement.

[0039] like Figure 1 As shown, the tower body 2 is also equipped with a light liquid inlet 8, a heavy liquid inlet 9, a light liquid outlet 10, and a heavy liquid outlet 11, which are connected to the extraction chamber 1. The light liquid inlet 8 and the heavy liquid outlet 11 are located in the lower half of the tower body 2, while the heavy liquid inlet 9 and the light liquid outlet 10 are located in the upper half of the tower body 2. This allows for more thorough contact between the heavy and light liquids, thereby ensuring the extraction effect.

[0040] The working principle of this invention is as follows: The raw material liquid to be extracted and separated is added into the extraction chamber 1 through the light liquid inlet 8 and the heavy liquid inlet 9, respectively. The drive motor 4 is started, and the drive motor 4 drives the drive shaft 63 to rotate. The drive shaft 63 further drives the driven shaft 64 to rotate. After the driven shaft 64 rotates, it drives the eccentric disk 71 to rotate synchronously. Since the driven shaft 64 is eccentrically set on the connecting part 711, and the deflection part 712 is an inclined structure that is inclined along the axis of the driven shaft 64, that is, the deflection part 712 is inclined to the connecting part 711. The projections of one end of the rotating part 712 and the other end of the deflecting part 712 onto the driven shaft 64 have a positional difference along the axis. When the deflecting part 712 rotates, it can push the collar 721 to swing via the thrust bearing 73, thereby causing the driven shaft 64 to move along the axis. The two eccentric disks 71 have a 180-degree phase angle difference, allowing the thrust generated by the two deflecting parts 712 on both sides of the collar 721 to alternate, thus enabling the collar 721 to reciprocate. At this time, the pendulum ball 724 rotates relative to the outer casing 62, and the free end 723 moves repeatedly along the guide groove 725, which guides its movement. The driven shaft 64 synchronously transmits this rotation and thrust to the main shaft 3, causing the main shaft 3 to drive the tray 5 to also repeatedly push along the axis of the main shaft 3 and rotate radially along the main shaft 3. Therefore, this invention includes an eccentric swashplate assembly 7 within the drive housing 6, which, when rotated, drives the main shaft 3 to reciprocate axially. This allows the tray 5 to simultaneously rotate and move axially during the extraction process. This enables movement in both axial and radial directions, fully utilizing the space within the extraction column. The resulting strong shear force promotes repeated dispersion and polymerization of the dispersed phase within the continuous phase, facilitating solute transfer and thus improving mass transfer efficiency for highly efficient separation. Furthermore, it eliminates eddies caused by a single motion trajectory.

[0041] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0042] Although this document frequently uses terms such as extraction chamber 1, tower body 2, main shaft 3, drive motor 4, tray 5, drive box 6, eccentric slant plate assembly 7, light liquid inlet 8, heavy liquid inlet 9, light liquid outlet 10, heavy liquid outlet 11, plate body 51, shaft hole 52, convection hole 53, installation space 61, outer shell 62, drive shaft 63, driven shaft 64, groove 65, telescopic space 66, eccentric plate 71, rocker arm assembly 72, thrust bearing 73, connecting part 711, deflection part 712, collar 721, rocker arm 722, free end 723, rocker ball 724, guide groove 725, bearing 726, needle roller bearing 727, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. An axial-radial dynamic extraction tower, comprising a tower body (2) having an internal extraction chamber (1), wherein a main shaft (3) is provided inside the extraction chamber (1), one end of the main shaft (3) is driven and connected to a drive motor (4), and a tower tray (5) is fixedly connected to the main shaft (3), characterized in that: A drive box (6) for power transmission is provided between the drive motor (4) and the main shaft (3). An eccentric swashplate assembly (7) is also provided inside the drive box (6). Rotating the eccentric swashplate assembly (7) can drive the main shaft (3) to reciprocate along the axial direction.

2. The axial-radial dynamic extraction tower as described in claim 1, characterized in that: The drive box (6) includes an outer shell (62) with an internal installation space (61). A drive shaft (63) and a driven shaft (64) are mounted on the outer shell (62) and are circumferentially fixed and axially slidably connected. The drive shaft (63) is driven by a drive motor (4), and the driven shaft (64) is driven by a main shaft (3). The eccentric swashplate assembly (7) is located in the installation space (61) and connected to the driven shaft (64).

3. The axial-radial dynamic extraction tower as described in claim 2, characterized in that: The drive shaft (63) has an inwardly recessed groove (65) at one end near the driven shaft (64), one end of the driven shaft (64) extends into the groove (65), and there is a telescopic space (66) between the end of the driven shaft (64) and the bottom of the groove (65).

4. The axial-radial dynamic extraction tower as described in claim 2, characterized in that: The eccentric swashplate assembly (7) includes two eccentric disks (71) fixedly connected to the outer surface of the driven shaft (64) and a rocker arm assembly (72) sleeved on the outside of the driven shaft (64). The two sides of the rocker arm assembly (72) are connected to the eccentric disks (71) through thrust bearings (73).

5. The axial-radial dynamic extraction tower as described in claim 4, characterized in that: The rocker arm assembly (72) includes a collar (721) and a rocker arm (722) fixedly connected to the collar (721). The collar (721) is connected to the driven shaft (64) or the eccentric disk (71) via a needle roller bearing (727). One end of the rocker arm (722) is a free end (723), and the other end is provided with a pendulum ball (724). The pendulum ball (724) is rotatably connected to the outer shell (62).

6. The axial-radial dynamic extraction tower as described in claim 5, characterized in that: The swing arm assembly (72) also includes a guide groove (725) that is elongated and opened on the side of the outer shell (62). A bearing (726) is connected to the free end (723). The free end (723) is located in the guide groove (725) and is slidably connected to the guide groove (725) through the bearing (726).

7. The axial-radial dynamic extraction tower as described in claim 4, characterized in that: The eccentric disk (71) includes an integrally formed connecting part (711) and a deflecting part (712). The driven shaft (64) passes through the connecting part (711). The deflecting part (712) is inclined along the axis of the driven shaft (64). The phase angles of the two eccentric disks (71) differ by 180 degrees.

8. The axial-radial dynamic extraction tower as described in claim 1, characterized in that: The tower body (2) is also provided with a light liquid inlet (8), a heavy liquid inlet (9), a light liquid outlet (10), and a heavy liquid outlet (11) that are connected to the extraction chamber (1). The light liquid inlet (8) and the heavy liquid outlet (11) are located in the lower half of the tower body (2), and the heavy liquid inlet (9) and the light liquid outlet (10) are located in the upper half of the tower body (2).

9. The axial-radial dynamic extraction tower as described in claim 1, characterized in that: The trays (5) are arranged in parallel to each other and are arranged sequentially along the axis of the main shaft (3), with the distance between two adjacent trays (5) being equal.

10. The axial-radial dynamic extraction tower as described in claim 1, characterized in that: The tray (5) includes a tray body (51), and a shaft hole (52) penetrating the tray body (51) is provided at the center of the tray body (51). The main shaft (3) is connected in the shaft hole (52). The tray body (51) is also provided with a number of convection holes (53), which penetrate the tray body (51) and have different diameters.

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