Drive box for fluorination industry

Abstract

The utility model belongs to transmission equipment technical field especially relates to a drive box for fluorine chemical industry field. Including drive box, drive box body inside be equipped with driving shaft and driven shaft, driving shaft and driven shaft use spline connection between driving shaft and driven shaft to make driving shaft and driven shaft realize circumferential clamping, axial sliding connection, driven shaft be equipped with an eccentric drive assembly that can make driven shaft reciprocating motion along driving shaft axial. The utility model discloses the design of two shafts, and adopts eccentric drive assembly to drive driven shaft, thereby realizes the synchronous performance of driven shaft's circumferential motion and axial motion, and provides better equipment and solution method for the equipment such as extraction tower of fluorine chemical industry field.

Description

Technical Field

[0001] This utility model belongs to the field of transmission equipment technology, and in particular relates to a drive box for use in the fluorochemical industry. Background Technology

[0002] Existing drive or transmission structures often only allow for single-directional rotation. For example, the output shaft of a motor rotates circumferentially, while the output shaft of a cylinder mostly moves axially. Even rotary cylinders can only move circumferentially. Transmission structures similar to lead screws and lead sleeves also involve axial movement.

[0003] In the field of fluorochemicals, when extraction is required, if the trays in the extraction tower can move synchronously in both the circumferential and axial directions, strong shear force can be generated, which will cause the dispersed phase to repeatedly disperse and polymerize in the continuous phase, promote solute transfer, thereby improving mass transfer efficiency and achieving efficient separation.

[0004] However, currently, whether it is connected by a motor, a gearbox, or a cylinder, it is impossible to make the stirring shaft rotate circumferentially and move axially synchronously at the same time. 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 drive box for use in the fluorochemical industry includes a drive box body, in which a drive shaft and a driven shaft are provided. The drive shaft and the driven shaft are connected by a spline, thereby enabling the drive shaft and the driven shaft to be circumferentially engaged and axially slidingly connected. An eccentric drive assembly is provided on the driven shaft, which enables the driven shaft to reciprocate along the axial direction of the drive shaft.

[0008] In the aforementioned drive box for use in the fluorochemical industry, the eccentric drive assembly includes an eccentric sleeve sleeved on and rotatably connected to the driven shaft. Each end of the eccentric sleeve is provided with a swashplate. The side of the swashplate near the eccentric sleeve is an inclined surface, and the inclined surface is in close contact with the end of the eccentric sleeve. The swashplate is fixedly connected to the driven shaft, and the inclined surface of the swashplate is rotatably connected to the end of the eccentric sleeve.

[0009] In the aforementioned drive box for use in the fluorochemical industry, the angle between the axis of the eccentric sleeve and the axis of the driven shaft is an acute angle. A swashplate thrust bearing is provided between the end of the eccentric sleeve and the inclined surface of the swashplate. The two ends of the swashplate thrust bearing are respectively engaged with the inclined surface of the swashplate and the end of the eccentric sleeve.

[0010] In the aforementioned drive box for use in the fluorochemical industry, the eccentric sleeve is cylindrical, and the inner wall of the eccentric sleeve is connected to the outer wall of the driven shaft through a sleeve fixed bearing. The inclined surfaces of the two swashplates at both ends of the eccentric sleeve are parallel to each other.

[0011] In the aforementioned drive box for use in the fluorochemical industry, the eccentric sleeve is connected to a rocker arm, and the end of the rocker arm away from the eccentric sleeve is rotatably connected to the drive box body.

[0012] In the aforementioned drive box for use in the fluorochemical industry, a positioning rod is provided on the side of the eccentric sleeve opposite to the position of the swing arm, and the end of the positioning rod away from the eccentric sleeve is movably connected to the drive box body.

[0013] In the aforementioned drive box for use in the fluorochemical industry, a pendulum ball is fixed at the end of the pendulum rod away from the eccentric sleeve, and the pendulum ball is rotatably connected to the drive box body.

[0014] In the aforementioned drive box for use in the fluorochemical industry, a long, narrow positioning groove is provided on the drive box body at a position corresponding to the positioning rod. The positioning groove is parallel to the driven shaft, and the end of the positioning rod away from the eccentric sleeve is inserted into the positioning groove and movably connected to the positioning groove.

[0015] In the aforementioned drive box for use in the fluorochemical industry, the end of the drive shaft near the driven shaft has a sliding space, the end of the driven shaft is inserted into the sliding space, and the outer wall of the driven shaft and the inner wall of the drive shaft are connected by a first spline.

[0016] In the aforementioned drive box for use in the fluorochemical industry, a coupling sleeve is connected to one end of the drive shaft near the driven shaft. A coupling disc is provided at the position corresponding to the driven shaft and the coupling sleeve. The inner wall of the coupling sleeve and the outer wall of the coupling disc are connected by a second spline.

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

[0018] This invention features an ingenious structural design. By using a two-shaft design and an eccentric drive assembly to drive the driven shaft, it achieves synchronous circumferential and axial motion of the driven shaft, providing better equipment and solutions for devices in the fluorochemical field, such as extraction towers. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a structural diagram after removing part of the drive housing;

[0021] Figure 3It is a sectional view of the driving shaft and driven shaft sections;

[0022] Figure 4 This is a cross-sectional view of the eccentrically driven component;

[0023] Figure 5 This is a cross-sectional view of the eccentrically driven component from another direction;

[0024] In the diagram: 1. Drive housing; 2. Drive shaft; 2a. Pulley; 3. Driven shaft; 4. Eccentric drive assembly; 5. Eccentric sleeve; 5a. Sleeve fixed bearing; 6. Swashplate; 7. Swashplate thrust bearing; 8. Rocker arm; 9. Positioning rod; 9a. Rolling bearing; 10. Rocker ball; 11. Positioning groove; 12. Sliding space; 13. First spline; 14. Coupling sleeve; 15. Coupling disc; 16. Second spline. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0026] like Figures 1-2 As shown, a drive box for use in the fluorochemical industry includes a drive box body 1. The drive box body 1 houses a drive shaft 2 and a driven shaft 3. The drive shaft 2, driven shaft 3, and drive box body 1 are connected by ball bearings. The drive shaft 2 and driven shaft 3 extend beyond the drive box body 1. A pulley 2a can also be installed on the drive shaft 2 for driving connections with other drives such as motors. The drive shaft 2 and driven shaft 3 are connected by a spline, enabling circumferential engagement and axial sliding connection. Those skilled in the art should know that a spline is a standard structure used for sliding connections. In this structure, when the drive shaft 2 rotates under external force, it drives the driven shaft 3 to rotate synchronously via the spline. The driven shaft 3 can be connected to components that need to be driven, such as a stirring shaft, which also rotates synchronously.

[0027] Preferably, the driven shaft 3 is provided with an eccentric drive assembly 4 that enables the driven shaft 3 to reciprocate along the axial direction of the drive shaft 2. Since the driven shaft 3 and the drive shaft 2 are connected by a spline, the driven shaft 3 and the drive shaft 2 can slide against each other. The sliding process is the process of moving along the axial direction of the driven shaft 3. Since the driven shaft 3 rotates circumferentially with the drive shaft 2, under the drive of the eccentric drive assembly 4, the driven shaft 3 simultaneously achieves both circumferential rotation and axial movement.

[0028] Specifically, combining Figure 2 and Figure 4As shown, the eccentric drive assembly 4 includes an eccentric sleeve 5 sleeved on and rotatably connected to the driven shaft 3. Each end of the eccentric sleeve 5 is provided with a swashplate 6. The side of the swashplate 6 near the eccentric sleeve 5 is an inclined surface and the inclined surface is tightly fitted with the end of the eccentric sleeve 5. The swashplate 6 is fixedly connected to the driven shaft 3, and the inclined surface of the swashplate 6 is rotatably connected to the end of the eccentric sleeve 5.

[0029] There is an angle between the inclined plane of the swashplate 6 and the vertical line of the driven shaft 3. This angle is equal to the angle between the axis of the eccentric sleeve 5 and the axis of the driven shaft 3.

[0030] More specifically, the angle between the axis of the eccentric sleeve 5 and the axis of the driven shaft 3 is acute. A swashplate thrust bearing 7 is provided between the end of the eccentric sleeve 5 and the inclined surface of the swashplate 6. The two ends of the swashplate thrust bearing 7 are respectively tightly fitted to the inclined surface of the swashplate 6 and the end of the eccentric sleeve 5. The thrust bearing is used to bear the axial load. In this embodiment, two swashplate thrust bearings 7 correspond to one swashplate 6, and the axial force is transmitted through the eccentric sleeve 5. That is to say, since the inclined surfaces of the two swashplates 6 will alternately generate upward and downward thrust on the eccentric sleeve 5 when they rotate, the eccentric sleeve 5 will generate reciprocating upward and downward motion, thereby driving the driven shaft 3 to reciprocate axial motion.

[0031] In this embodiment, combined with Figure 5 As shown, the eccentric sleeve 5 is cylindrical. The inner wall of the eccentric sleeve 5 is connected to the outer wall of the driven shaft 3 through the sleeve fixed bearing 5a. The inclined surfaces of the two swashplates 6 at both ends of the eccentric sleeve 5 are parallel to each other, that is, the distance between the two swashplates 6 is equal. Therefore, no matter how the swashplates 6 rotate, the distance between the inclined surfaces of the two swashplates 6 is always equal.

[0032] Let's look again. Figure 4 and Figure 5 An eccentric sleeve 5 is connected to a pendulum rod 8, which is clamped between two swashplate thrust bearings. Preferably, a bearing can be installed between the pendulum rod 8 and the eccentric sleeve 5 to reduce friction between the pendulum rod and the eccentric sleeve 5 during swinging. The end of the pendulum rod 8 away from the eccentric sleeve 5 is rotatably connected to the drive housing 1. In a preferred embodiment, a pendulum ball 10 is fixed to the end of the pendulum rod 8 away from the eccentric sleeve 5. The pendulum ball 10 is rotatably connected to the drive housing 1, has a spherical surface, and is smoothly connected to the drive housing 1. This connecting end can rotate, serving as the fulcrum of the pendulum rod 8. The other end of the pendulum rod 8 swings up and down with the two swashplates 6. Figure 4As shown, the swing angle β of the pendulum 8 is the same as the angle α between the inclined plane of the swashplate 6 and the vertical plane of the driven shaft. That is, the axial movement of the driven shaft 3 depends on the slope of the inclined plane of the swashplate 6. In this embodiment, the angle α is selected between 10-30°, preferably 15°. The swing within this angle range is relatively smooth.

[0033] like Figure 1 and Figure 2 As shown, a positioning rod 9 is provided on the eccentric sleeve 5 on the side opposite to the position of the rocker arm 8. The end of the positioning rod 9 away from the eccentric sleeve 5 is movably connected to the drive housing 1. A long, narrow positioning groove 11 is provided on the drive housing 1 at the position corresponding to the positioning rod 9. The positioning groove 11 is arranged parallel to the driven shaft 3. The end of the positioning rod 9 away from the eccentric sleeve 5 is inserted into the positioning groove 11 and movably connected to the positioning groove. Preferably, the positioning rod 9 is inserted into the positioning groove 11 and a rolling bearing 9a is provided to provide a rolling connection and reduce the friction between the end of the positioning rod 9 and the positioning groove 11.

[0034] The positioning rod 9 and the swing rod 8 are located on both sides of the eccentric sleeve 5, respectively, and together they provide support, making the swing of the eccentric sleeve 5 stable.

[0035] Combination Figure 3 As shown, the drive shaft 2 has a sliding space 12 at one end near the driven shaft 3. The end of the driven shaft 3 is inserted into the sliding space 12. The length of the sliding space 12 is set according to the maximum swing amplitude of the swing arm 8. Its length must be greater than the distance that the driven shaft 3 can move. If necessary, an air vent can be provided in the section of the drive shaft 2 with the sliding space 12 for exhaust and intake of air during compression or expansion. The outer wall of the driven shaft 3 and the inner wall of the drive shaft 2 are connected by a first spline 13. As mentioned above, the first spline 13 here serves as a sliding connection between the driven shaft 3 and the drive shaft 2, and at the same time fixes the driven shaft 3 and the drive shaft 2 circumferentially to achieve synchronous rotation of the two.

[0036] To enhance the stability of the connection between the drive shaft 2 and the driven shaft 3, a coupling sleeve 14 is connected to one end of the drive shaft 2 near the driven shaft 3. A coupling disc 15 is positioned corresponding to the driven shaft 3 and the coupling sleeve 14. The inner wall of the coupling sleeve 14 and the outer wall of the coupling disc 15 are connected by a second spline 16. The cooperation between the coupling sleeve 14 and the coupling disc 15 provides radial support to the driven shaft 3, ensuring that the driven shaft remains stable during axial reciprocating motion and improving the connection stability between the driven shaft and the drive shaft.

[0037] The working principle of this utility model is as follows:

[0038] The rotation of the drive shaft 2 drives the driven shaft 3 to rotate synchronously via the first spline 13 and the second spline 16. (Refer to...) Figure 4 At this time, the thickest part of the swashplate closest to the drive shaft 2 is closest to the positioning rod 9, and the thickest part of the swashplate furthest from the drive shaft 2 is closest to the swing rod 8. The swing rod 8 is at the lowest swing position, or it can be understood that the eccentric sleeve 5 is at the lowest position as a whole. That is to say, the driven shaft 3 moves the greatest distance away from the drive shaft 2 in axial motion.

[0039] The driven shaft 3 rotates, causing the two swashplates 6 to rotate synchronously. The swashplate 6 away from the drive shaft 2 pushes the eccentric sleeve 5 and the rocker arm 8 towards the drive shaft 2 through the adjacent swashplate thrust bearing 7. The eccentric sleeve 5 drives the driven shaft 3 to move axially towards the drive shaft 2. When the swashplate rotates 180°, the thinnest part of the swashplate closest to the drive shaft 2 is closest to the positioning rod 9, and the thinnest part of the swashplate away from the drive shaft 2 is closest to the rocker arm 8. The rocker arm 8 is at its highest swing position, or it can be understood that the eccentric sleeve 5 is at its highest position. At this time, the distance from the driven shaft 3 into the sliding space 12 of the drive shaft 2 is the longest, that is, the distance from the driven shaft into the drive shaft is the largest.

[0040] When the driven shaft 3 drives the swashplate 6 to rotate another 180°, it returns to the above state. Figure 4 As shown in the diagram, this motion is repeated, causing the driven shaft 3 to reciprocate axially. A fixed flange at the end of the driven shaft 3 allows it to be connected to other components such as a stirring shaft.

[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 replace them, without departing from the spirit of this utility model.

[0042] Although this document frequently uses terms such as drive housing 1, drive shaft 2, pulley 2a, driven shaft 3, eccentric drive assembly 4, eccentric sleeve 5, sleeve fixed bearing 5a, swashplate 6, swashplate thrust bearing 7, rocker arm 8, positioning rod 9, rolling bearing 9a, pendulum ball 10, positioning groove 11, sliding space 12, first spline 13, coupling sleeve 14, coupling disc 15, and second spline 16, 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. A drive box for use in the fluorochemical industry, comprising a drive box body (1), wherein the drive box body (1) is provided with a drive shaft (2) and a driven shaft (3), the drive shaft (2) and the driven shaft (3) are connected by a spline so that the drive shaft (2) and the driven shaft (3) achieve circumferential snap-fit ​​and axial sliding connection, characterized in that, The driven shaft (3) is provided with an eccentric drive assembly (4) that enables the driven shaft (3) to reciprocate along the axial direction of the drive shaft (2). The eccentric drive assembly (4) includes an eccentric sleeve (5) sleeved on the driven shaft (3) and rotatably connected to the driven shaft (3). Each end of the eccentric sleeve (5) is provided with a swashplate (6). The side of the swashplate (6) near the eccentric sleeve (5) is an inclined surface and the inclined surface is tightly fitted with the end of the eccentric sleeve (5). The swashplate (6) is fixedly connected to the driven shaft (3), and the inclined surface of the swashplate (6) is rotatably connected to the end of the eccentric sleeve (5).

2. The drive box for use in the fluorochemical industry as described in claim 1, characterized in that, The angle between the axis of the eccentric sleeve (5) and the axis of the driven shaft (3) is an acute angle. A swash plate thrust bearing (7) is provided between the end of the eccentric sleeve (5) and the inclined surface of the swash plate (6). The two ends of the swash plate thrust bearing (7) are respectively fitted into the inclined surface of the swash plate (6) and the end of the eccentric sleeve (5).

3. The drive box for use in the fluorochemical industry as described in claim 1, characterized in that, The eccentric sleeve (5) is cylindrical. The inner wall of the eccentric sleeve (5) is connected to the outer wall of the driven shaft (3) through the sleeve fixing bearing (5a). The inclined surfaces of the two swashplates (6) at both ends of the eccentric sleeve (5) are parallel to each other.

4. A drive box for use in the fluorochemical industry as described in claim 1, characterized in that, The eccentric sleeve (5) is connected to a rocker arm (8), and the end of the rocker arm (8) away from the eccentric sleeve (5) is rotatably connected to the drive housing (1).

5. A drive box for use in the fluorochemical industry as described in claim 4, characterized in that, A positioning rod (9) is provided on the side of the eccentric sleeve (5) opposite to the position of the swing rod (8). The end of the positioning rod (9) away from the eccentric sleeve (5) is movably connected to the drive housing (1).

6. A drive box for use in the fluorochemical industry as described in claim 4, characterized in that, A pendulum ball (10) is fixed at the end of the pendulum rod (8) away from the eccentric sleeve (5), and the pendulum ball (10) is rotatably connected to the drive housing (1).

7. A drive box for use in the fluorochemical industry as described in claim 5, characterized in that, The drive housing (1) is provided with a long strip-shaped positioning groove (11) at a position corresponding to the positioning rod (9). The positioning groove (11) is arranged parallel to the driven shaft (3). The end of the positioning rod (9) away from the eccentric sleeve (5) is inserted into the positioning groove (11) and is movably connected to the positioning groove.

8. A drive box for use in the fluorochemical industry as described in claim 1, characterized in that, The drive shaft (2) has a sliding space (12) at one end near the driven shaft (3), and the end of the driven shaft (3) is inserted into the sliding space (12). The outer wall of the driven shaft (3) and the inner wall of the drive shaft (2) are connected by a first spline (13).

9. A drive box for use in the fluorochemical industry as described in claim 8, characterized in that, The drive shaft (2) is connected to a coupling sleeve (14) at one end near the driven shaft (3). The driven shaft (3) is provided with a coupling disc (15) at the position corresponding to the coupling sleeve (14). The inner wall of the coupling sleeve (14) and the outer wall of the coupling disc (15) are connected by a second spline (16).

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