A dynamic mixer for a spinning melt
By designing the rotation, reciprocating and tumbling motions of the spinning melt dynamic mixer, the problem of uneven melt flow in traditional mixers was solved, achieving efficient and uniform mixing of the melt and improving the performance consistency of fiber products.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI JUXIN TECH CO LTD
- Filing Date
- 2025-07-17
- Publication Date
- 2026-07-10
AI Technical Summary
Traditional spinning melt mixers have difficulty effectively controlling the flow direction and path of the melt, resulting in melt stagnation, poor flow or flow stratification during the mixing process, which affects melt quality and the performance consistency of fiber products.
A dynamic mixer for spinning melt is used, which creates a strong turbulent flow field through the rotation, reciprocating and tumbling motion of the stirring blades, ensuring that the melt achieves uniform mixing in a short time.
It significantly improves the convective mixing intensity between the upper and lower layers of the melt, shortens the mixing time, adapts to the continuous production requirements of high-speed spinning, and improves the consistency of melt quality.
Smart Images
Figure CN224478182U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a spinning melt mixer, specifically a dynamic mixer for spinning melt. Background Technology
[0002] Melt spinning is one of the main processes in the production of chemical fibers. Solid polymers are heated to above their melting point, which transforms them into a molten state with certain fluidity and viscosity. The molten polymer is then extruded through the tiny channels of a spinneret. The fine stream of melt is rapidly cooled and solidified in the air, eventually forming fibers.
[0003] A spinning melt mixer is a device used to uniformly mix different types of melts or additives with different properties, so that the melt reaches a state of uniform composition and consistent properties before entering the spinning assembly.
[0004] Spinning melt mixers are divided into static mixers and dynamic mixers. Static mixers utilize the flow characteristics of the melt and the geometry of the mixing elements to achieve uniform dispersion of the melt components through multiple splitting and mixing processes. The mixing elements inside the static mixer are a set of blades with specific shapes. The melt is continuously divided and rotated as it passes through, thereby achieving mixing.
[0005] Dynamic mixers achieve intense mixing of melts through mechanical stirring. They offer superior mixing performance, rapidly and uniformly mixing melts of different components. The intense shearing and stirring of the melt ensures rapid and homogeneous mixing.
[0006] Dynamic mixers, with their rotating stirring components, provide stronger shear and stirring forces, making them more suitable for high-viscosity or difficult-to-mix melts and ensuring more uniform mixing. Therefore, dynamic mixers have a significant advantage in mixing.
[0007] Traditional spinning melt mixers struggle to effectively control the flow direction and path of the melt, failing to create effective vertical turbulence. This can easily lead to localized stagnation, poor flow, or stratification of the melt during mixing. Consequently, the temperature, viscosity, and other physical properties of the melt become unevenly distributed. Furthermore, the design and movement of the stirring blades cannot cover all areas within the mixer, resulting in the existence of mixing dead zones. When the melt remains in these dead zones for an extended period, it is not only prone to degradation reactions, affecting melt quality, but also impacting the overall mixing effect and reducing the performance consistency of the fiber products. Utility Model Content
[0008] The purpose of this invention is to provide a dynamic mixer for spinning melt to solve the problems mentioned in the background art.
[0009] To achieve the above objectives, this utility model provides the following technical solution:
[0010] A dynamic mixer for spinning melt includes a mixing cylinder and a drive motor. A transmission shaft is fixedly sleeved on the output shaft of the drive motor. A first transmission mechanism is fixedly sleeved on the bottom of the transmission shaft. An installation plate is fixedly connected to the inside of the mixing cylinder. A rotating sleeve and two limiting grooves formed on one side of the rotating sleeve are rotatably mounted on the bottom of the installation plate. Two sliding sleeves and the first transmission mechanism fixed inside the sliding sleeves are slidably mounted on the rotating sleeve. A limiting reciprocating mechanism is fixedly connected to the bottom of the mixing cylinder.
[0011] The dynamic mixer for the spinning melt as described above: the first transmission mechanism includes a first gear fixedly sleeved on the bottom of the transmission shaft and a second gear meshing with the first gear, the second gear being rotatably mounted below the mounting plate.
[0012] The dynamic mixer for the spinning melt as described above: the first transmission mechanism further includes an internal gear meshing on one side of the second gear, the outer wall of the internal gear being fixed to the top of the rotating sleeve.
[0013] As described above, the dynamic mixer for the spinning melt has a protrusion on the inner side of the sliding sleeve. The sliding sleeve is slidably mounted on a limiting groove on one side of the rotating sleeve via the protrusion on the inner side. Baffles for blocking the limiting groove are fixedly installed at both the upper and lower ends of the sliding sleeve.
[0014] The dynamic mixer for the spinning melt as described above: The second transmission mechanism includes four rotating shafts rotatably mounted in the sliding sleeve and a spiral agitator fixed at one end of the rotating shaft. A third gear is provided in the sliding sleeve. The third gear is fixedly sleeved on one of the rotating shafts. The third gear meshes with an intermittent gear, which is fixed on the inner wall of the rotating sleeve.
[0015] The dynamic mixer for the spinning melt as described above: the second transmission mechanism further includes a fourth gear fixedly sleeved on the rotating shaft, the bottoms of the four fourth gears meshing with the same toothed disc, the toothed disc being rotatably mounted inside the sliding sleeve.
[0016] The dynamic mixer for the spinning melt as described above: the limiting reciprocating mechanism includes a column fixed to the bottom of the mixing cylinder and two limiting cylinders fixedly sleeved on the column. The limiting cylinders are provided with reciprocating spiral grooves, and sliding blocks are slidably installed on the reciprocating spiral grooves. The sliding blocks are fixed inside the sliding sleeves.
[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: the stirring blade is slidably assembled on the transmission shaft, and the transmission shaft and the blade are driven by the drive motor to rotate synchronously. At the same time, the blade slides up and down, and completes a flipping action synchronously in each up and down stroke of the blade; the blade adopts an arc edge structure, and after flipping, it can act on the melt in the opposite direction through the arc edge to change the axial flow direction. This design can form a strong turbulent flow field in the melt through the synergistic effect of rotational shearing, reciprocating disturbance and periodic flipping and reversal, which can greatly improve the convective mixing intensity of the upper and lower layers of the melt.
[0018] This invention also features multi-dimensional composite motion, employing rotation, reciprocating and tumbling motion modes, which can significantly increase the melt disturbance frequency and mixing path complexity, and shorten the mixing time to meet the continuous production needs of high-speed spinning. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of a dynamic mixer for spinning melt.
[0020] Figure 2 This is a schematic diagram of the internal structure of a dynamic mixer for spinning melt.
[0021] Figure 3 This is a schematic diagram of the overall internal structure and the cross-sectional structure of the rotating sleeve in a dynamic mixer for spinning melt.
[0022] Figure 4 This is a schematic diagram of the spiral agitator in the dynamic mixer of the spinning melt in the raised state.
[0023] Figure 5 This is a schematic diagram of the internal structure of a dynamic mixer for spinning melt from another angle.
[0024] Figure 6 This is a schematic diagram of the drive motor, rotating sleeve, and spiral agitator in a dynamic mixer for spinning melt.
[0025] Figure 7 This is a schematic diagram of the first transmission mechanism and the internal structure of the rotating sleeve in a dynamic mixer for spinning melt.
[0026] Figure 8 This is a schematic diagram of the first transmission mechanism in a dynamic mixer for spinning melt.
[0027] Figure 9 This is a schematic diagram of the internal structure of the first transmission mechanism, the second transmission mechanism, and the rotating sleeve in a dynamic mixer for spinning melt.
[0028] Figure 10 This is a schematic diagram of the sliding sleeve, sliding block, and spiral agitator in a dynamic mixer for spinning melt.
[0029] Figure 11 This is a schematic diagram of the second transmission mechanism in a dynamic mixer for spinning melt.
[0030] Figure 12 This is a schematic diagram showing the positional relationship between the intermittent gear, the third gear, the rotating shaft, and the spiral agitator in a dynamic mixer for spinning melt.
[0031] Figure 13 This is a schematic diagram of the sliding sleeve and limiting reciprocating mechanism in a dynamic mixer for spinning melt.
[0032] Figure 14 This is a schematic diagram of the limiting reciprocating mechanism in a dynamic mixer for spinning melt.
[0033] In the diagram: 1. Mixing cylinder; 2. Drive motor; 3. Transmission shaft; 4. First gear; 5. Second gear; 6. Internal gear; 7. Mounting plate; 8. Rotating sleeve; 9. Limiting groove; 10. Sliding sleeve; 11. Baffle; 12. Rotating shaft; 13. Spiral agitator; 14. Intermittent gear; 15. Third gear; 16. Fourth gear; 17. Gear disc; 18. Limiting cylinder; 19. Reciprocating spiral groove; 20. Sliding block. Detailed Implementation
[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0035] Please see Figures 1-14 As an embodiment of this utility model, the dynamic mixer of the spinning melt includes a mixing cylinder 1 and a drive motor 2. A transmission shaft 3 is fixedly sleeved on the output shaft of the drive motor 2. A first transmission mechanism is fixedly sleeved on the bottom of the transmission shaft 3. An installation plate 7 is fixedly connected inside the mixing cylinder 1. A rotating sleeve 8 and two limiting grooves 9 opened on one side of the rotating sleeve 8 are rotatably installed on the bottom of the installation plate 7. Two sliding sleeves 10 and a first transmission mechanism fixed inside the sliding sleeves 10 are slidably installed on the rotating sleeve 8. A limiting reciprocating mechanism is fixedly connected to the bottom of the mixing cylinder 1.
[0036] In this embodiment, in the initial state, the spinning melt is introduced into the mixing cylinder 1, and then the drive motor 2 is started. The output shaft of the drive motor 2 drives the transmission shaft 3 to rotate. The rotation of the transmission shaft 3 will drive the rotating sleeve 8 to rotate continuously through the first transmission mechanism, which will drive the internal mixing blades to rotate continuously. At this time, both sliding sleeves 10 are in cooperation with the limiting reciprocating mechanism, so that the upper and lower sets of blades slide up and down. During the up and down movement of the sliding sleeves 10, the blades will synchronously complete a flipping action. Due to the arc edge design of the blades, after flipping, the arc edge can act on the melt in the opposite direction to change the axial flow direction. This design can form a strong turbulent flow field in the melt through the synergistic effect of rotational shearing, reciprocating disturbance and periodic flipping and reversal, which can greatly improve the convective mixing intensity of the upper and lower layers of the melt.
[0037] As a further embodiment of this utility model, the first transmission mechanism includes a first gear 4 fixedly sleeved on the bottom of the transmission shaft 3 and a second gear 5 meshing with the first gear 4, the second gear 5 being rotatably mounted below the mounting plate 7.
[0038] In this embodiment, the first gear 4 meshes with the second gear 5, and the second gear 5 is rotatably mounted under the mounting plate 7 for support.
[0039] As a further embodiment of this utility model, the first transmission mechanism also includes an internal gear 6 that meshes with the second gear 5 on one side, and the outer wall of the internal gear 6 is fixed to the top of the rotating sleeve 8.
[0040] In this embodiment, the drive motor 2 is started, and the drive motor 2 drives the transmission shaft 3 to rotate. The transmission shaft 3 drives the first gear 4 to rotate. The first gear 4 drives the inner gear 6 to rotate through the second gear 5. The inner gear 6 then drives the rotating sleeve 8 to rotate. The mounting plate 7 supports the rotation of the rotating sleeve 8.
[0041] As a further embodiment of this utility model, the inner side of the sliding sleeve 10 is provided with a protrusion, and the sliding sleeve 10 is slidably mounted on the limiting groove 9 on one side of the rotating sleeve 8 through the inner protrusion. The upper and lower ends of the sliding sleeve 10 are both fixedly installed with baffles 11 for blocking the limiting groove 9.
[0042] In this embodiment, the inner side of the sliding sleeve 10 is designed with a protrusion. The protrusion extends through the limiting groove 9 into the interior of the rotating sleeve 8, so that the sliding sleeve 10 can slide stably on the rotating sleeve 8. At the same time, the baffles 11 on the upper and lower sides of the sliding sleeve 10 can always block the limiting groove 9 to prevent the spinning melt from entering the interior of the rotating sleeve 8 through the limiting groove 9.
[0043] As a further embodiment of this utility model, the second transmission mechanism includes four rotating shafts 12 rotatably mounted in the sliding sleeve 10 and a spiral stirring plate 13 fixed at one end of the rotating shaft 12. A third gear 15 is provided in the sliding sleeve 10. The third gear 15 is fixedly sleeved on one of the rotating shafts 12. The third gear 15 meshes with an intermittent gear 14. The intermittent gear 14 is fixed on the inner wall of the rotating sleeve 8.
[0044] In this embodiment, four rotating shafts 12 and four spiral agitators 13 are rotatably installed inside the sliding sleeve 10. The spiral agitators 13 have an arc edge design. A third gear 15 is fixed on one of the rotating shafts 12. The upper and lower ends of the intermittent gear 14 are provided with teeth, but the middle is not provided with teeth. When the third gear 15 moves up and down from the intermittent gear 14, it can drive the spiral agitators 13 to descend and continuously rotate.
[0045] As a further embodiment of this utility model, the second transmission mechanism also includes a fourth gear 16 fixedly sleeved on the rotating shaft 12, and the bottoms of the four fourth gears 16 mesh with the same toothed disc 17, which is rotatably mounted inside the sliding sleeve 10.
[0046] In this embodiment, the bottom of the four fourth gears 16 meshes with the same toothed disk 17, and when one of the fourth gears 16 rotates, it drives the remaining three fourth gears 16 to rotate synchronously through the toothed disk 17 at the bottom.
[0047] As a further embodiment of this utility model, the limiting reciprocating mechanism includes a column fixed to the bottom of the mixing cylinder 1 and two limiting cylinders 18 fixedly sleeved on the column. The limiting cylinder 18 is provided with a reciprocating spiral groove 19, and a sliding block 20 is slidably installed on the reciprocating spiral groove 19. The sliding block 20 is fixed to the inner side of the sliding sleeve 10.
[0048] In this embodiment, when the sliding sleeve 10 rotates with the rotating sleeve 8, the sliding block 20 on one side of the sliding sleeve 10 slides towards the reciprocating spiral groove 19. As the rotating sleeve 8 rotates, the position of the sliding block 20 changes, thereby driving the sliding sleeve 10 to move up and down. At the same time, during the up and down movement of the sliding sleeve 10, the third gear 15 intermittently meshes with the intermittent gear 14. After the third gear 15 rotates, it drives one of the rotating shafts 12 to rotate. At this time, when one of the fourth gears 16 rotates, it drives the remaining three fourth gears 16 to rotate synchronously through the bottom gear disk 17, thereby making the spiral stirring blade 13 rotate synchronously. This allows the spiral stirring blade 13 to complete a flipping action in each up and down reciprocating stroke. At the same time, the arc edge structure of the spiral stirring blade 13 can act on the melt in the opposite direction after flipping to change the axial flow direction. This design, through the synergistic effect of rotational shearing, reciprocating disturbance and periodic flipping and reversal, can form a strong turbulent flow field in the melt, greatly improving the convective mixing intensity of the upper and lower layers of the melt.
[0049] The above embodiments are exemplary and not restrictive. Therefore, without departing from the spirit or basic characteristics of this utility model, any technical solutions that can be implemented in other specific forms are included in this utility model.
Claims
1. A dynamic mixer for spinning melt, comprising a mixing cylinder (1) and a drive motor (2), characterized in that, A transmission shaft (3) is fixedly sleeved on the output shaft of the drive motor (2). A first transmission mechanism is fixedly sleeved on the bottom of the transmission shaft (3). An installation plate (7) is fixedly connected inside the mixing cylinder (1). A rotating sleeve (8) and two limiting grooves (9) are rotatably installed on the bottom of the installation plate (7). Two sliding sleeves (10) and a first transmission mechanism fixed inside the sliding sleeves (10) are slidably installed on the rotating sleeve (8). A limiting reciprocating mechanism is fixedly connected to the bottom of the mixing cylinder (1).
2. The dynamic mixer for spinning melt according to claim 1, characterized in that, The first transmission mechanism includes a first gear (4) fixedly sleeved on the bottom of the transmission shaft (3) and a second gear (5) meshing with the first gear (4), the second gear (5) being rotatably mounted below the mounting plate (7).
3. The dynamic mixer for spinning melt according to claim 2, characterized in that, The first transmission mechanism also includes an internal gear (6) that meshes with the second gear (5) on one side, and the outer wall of the internal gear (6) is fixed to the top of the rotating sleeve (8).
4. The dynamic mixer for spinning melt according to claim 3, characterized in that, The inner side of the sliding sleeve (10) is provided with a protrusion. The sliding sleeve (10) is slidably mounted on the limiting groove (9) on one side of the rotating sleeve (8) through the protrusion on the inner side. The upper and lower ends of the sliding sleeve (10) are fixedly installed with baffles (11) for blocking the limiting groove (9).
5. A dynamic mixer for spinning melt according to claim 4, characterized in that, The second transmission mechanism includes four rotating shafts (12) rotatably mounted in the sliding sleeve (10) and a spiral agitator (13) fixed at one end of the rotating shaft (12). A third gear (15) is provided in the sliding sleeve (10). The third gear (15) is fixedly sleeved on one of the rotating shafts (12). The third gear (15) meshes with an intermittent gear (14). The intermittent gear (14) is fixed on the inner wall of the rotating sleeve (8).
6. A dynamic mixer for spinning melt according to claim 5, characterized in that, The second transmission mechanism also includes a fourth gear (16) fixedly sleeved on the rotating shaft (12), and the bottom of the four fourth gears (16) meshes with the same toothed disc (17), which is rotatably installed inside the sliding sleeve (10).
7. A dynamic mixer for spinning melt according to claim 6, characterized in that, The limiting reciprocating mechanism includes a column fixed to the bottom of the mixing cylinder (1) and two limiting cylinders (18) fixedly sleeved on the column. The limiting cylinder (18) has a reciprocating spiral groove (19), and a sliding block (20) is slidably installed on the reciprocating spiral groove (19). The sliding block (20) is fixed to the inner side of the sliding sleeve (10).