Colloidal particle forming device for condensation production unit of chain-end functionalized solution polymerized styrene-butadiene rubber
By using a dynamic mixer and granulator in the solution-polymerized styrene-butadiene rubber manufacturing process, the problem of clogging in the mixing solution was solved, flow rate control and efficient solvent removal were achieved, and production stability and safety were improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHONGZHE (ZHEJIANG) POLYMER NEW MATERIALS CO LTD
- Filing Date
- 2025-02-10
- Publication Date
- 2026-04-21
AI Technical Summary
In the existing technology for manufacturing solution-polymerized styrene-butadiene rubber, viscous rubber particles in the mixed solution output from the dynamic mixer can easily clog pipelines and coagulation reactors.
The device includes a dynamic mixer and a granule forming device. The dynamic mixer is equipped with an agitator for uniform mixing, and the granule forming device is equipped with a control component and an anti-backflow component. The agitator and control component accelerate the flow rate and, combined with high-temperature steam mass and heat transfer, prevent clogging.
It effectively prevents viscous particles in the mixed solution from clogging the outlet, improves the stability and safety of the production process, and enhances the solvent removal effect.
Smart Images
Figure CN224145073U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rubber preparation technology, and more specifically, to a pellet forming device for a chain-end functionalized solution-polymerized styrene-butadiene rubber (SBR) agglomeration production unit. Background Technology
[0002] Styrene-butadiene rubber (SBR), an important synthetic rubber, possesses excellent mechanical strength, low-temperature performance, and abrasion resistance, and is widely used in tires, finished products, and adhesives. Traditional SBR is mainly prepared through polymerization, but its simple molecular structure makes it difficult to directly meet the demands of many high-performance applications. To improve the functionality and application range of SBR, researchers have focused on developing new functionalized SBRs in recent years, introducing specific functional groups to enhance its properties. Solution-polymerized SBR has become a research hotspot due to its higher controllability during polymerization and easier post-reaction functionalization.
[0003] However, at least one of the following problems exists in the related technology: in the manufacturing process of solution-polymerized styrene-butadiene rubber in the prior art, there is a situation where viscous rubber particles in the mixed solution output from the dynamic mixer clog the pipeline, the granule forming device and the coagulation vessel. Utility Model Content
[0004] The technical problem solved by this utility model is that in the manufacturing process of solution-polymerized styrene-butadiene rubber in the prior art, there is a situation where viscous rubber particles in the mixed solution output from the dynamic mixer block the pipeline, the rubber particle forming device and the coagulation vessel.
[0005] To address the aforementioned problems, this invention provides a pellet forming apparatus for producing chain-end functionalized solution-polymerized styrene-butadiene rubber (SBR), comprising: a dynamic mixer with a discharge port at its top and an agitator inside the dynamic mixer for dispersing and mixing the rubber solution and dispersant aqueous solution within the dynamic mixer to form a mixed solution; and a pellet forming device connected to the discharge port for removing and recovering the solvent from the mixed solution, and a control component inside the pellet forming device for accelerating the flow rate of the mixed solution from the discharge port into the pellet forming device.
[0006] Compared with existing technologies, the technical effects achieved by this technical solution are as follows: the agitator in the dynamic mixer mixes the adhesive solution and the dispersant aqueous solution evenly, reducing the occurrence of viscous particles clogging the pipeline and coagulation vessel; at the same time, by setting control components in the granule forming device, the flow rate of the mixed solution into the granule forming device is accelerated, thereby avoiding the situation where viscous particles in the mixed solution clog the discharge port.
[0007] In one embodiment of this utility model, the granule forming device includes: a first pipeline, which is connected to the discharge port and has a first steam inlet on its side wall; and a second pipeline, which is nested inside the first pipeline and is connected to the first pipeline, through which the mixed solution is discharged from the granule forming device.
[0008] Compared with existing technologies, the technical effects achieved by this technical solution are as follows: the nested structure of the first and second pipelines enables a smooth transition and discharge of the mixed solution from the dynamic mixer to the granule molder; high-temperature steam is introduced through the first steam inlet on the side wall of the first pipeline, thereby providing the necessary heat to achieve full mass and heat transfer between the adhesive and the high-temperature steam, thus promoting granule molding and improving the solvent removal effect.
[0009] In one embodiment of this utility model, the granule forming device further includes: a third pipeline, which is nested inside the second pipeline, and the first pipeline, the second pipeline and the third pipeline are connected. The end of the third pipeline away from the discharge port is provided with a second steam inlet; wherein, the third pipeline and the second pipeline form an outlet channel for the mixed solution to be discharged.
[0010] Compared with existing technologies, the technical effects achieved by this technical solution are as follows: by embedding a third pipeline inside the second pipeline and introducing high-temperature steam from the second steam inlet, the speed of granule molding and the solvent removal effect are further improved.
[0011] In one embodiment of this utility model, the granule forming device further includes: an anti-backflow component, which is embedded between the second pipeline and the third pipeline to prevent the mixed solution in the outlet channel from flowing back; wherein, when the anti-backflow component is in the first position relative to the third pipeline, the outlet channel is closed; when the anti-backflow component changes from the first position to the second position relative to the third pipeline, the outlet channel is opened.
[0012] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: by setting up anti-backflow components, the backflow of mixed solution in the outlet channel is prevented, thus ensuring the safety and stability of the production process.
[0013] In one embodiment of this utility model, the anti-backflow component is magnetically attracted to the first position.
[0014] In one embodiment of this utility model, the granule forming device further includes: an outlet pipe, which is connected to a second pipe, and the outlet pipe has an inlet on its wall.
[0015] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: by setting an inlet on the outlet pipeline, hot water is introduced through the inlet to drive the mixed solution out, thereby accelerating the production efficiency and preventing viscous particles in the mixed solution from adhering to the inner wall of the pipeline.
[0016] In one embodiment of this utility model, a limiting plate is provided at the connection between the outlet pipe and the second pipe, and the limiting plate is used to limit the anti-backflow component.
[0017] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: by limiting the anti-backflow component with a limiting plate, the accidental movement of the anti-backflow component is prevented, thus ensuring the stability and reliability of the anti-backflow component.
[0018] In one embodiment of this utility model, a locking device is provided between the dynamic mixer and the granule forming device.
[0019] Compared with existing technologies, the technical effect achieved by adopting this technical solution is that the dynamic mixer and the granule forming device are locked together by a locking device, thereby improving the stability of the connection between the two.
[0020] In one embodiment of this utility model, a first stop is provided at the connection between the granule forming device and the discharge port; the control component includes a second stop and a control rod connected to each other, the second stop is located at the discharge port and cooperates with the first stop; wherein, when the control rod is pushed to move the second stop closer to the first stop, the flow rate increases; when the control rod is pushed to move the second stop away from the first stop, the flow rate decreases.
[0021] Compared with the existing technology, the technical effects achieved by adopting this technical solution are as follows: The first stop and the control component are set at the connection between the granule forming machine and the discharge port. By pushing the control rod, the distance between the second stop and the first stop can be adjusted, thereby changing the flow rate and achieving precise control of the flow rate of the mixed solution.
[0022] In one embodiment of this utility model, a handwheel is provided at the end of the control lever away from the second stop.
[0023] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: the handwheel design allows operators to easily adjust the position of the control lever, thereby changing the flow rate and improving the convenience of operation.
[0024] By adopting the technical solution of this utility model, the following technical effects can be achieved:
[0025] (1) The agitator in the dynamic mixer mixes the adhesive and dispersant aqueous solution evenly, reducing the occurrence of sticky particles clogging the pipeline and coagulation vessel; at the same time, by setting control components in the granule forming device, the flow rate of the mixed solution into the granule forming device is accelerated, thereby avoiding the situation of sticky particles in the mixed solution clogging the outlet.
[0026] (2) Through the nested structure of the first pipeline and the second pipeline, the mixed solution is smoothly transitioned and discharged from the dynamic mixer to the granule forming device; high-temperature steam is introduced through the first steam inlet on the side wall of the first pipeline, thereby providing the necessary heat to achieve full mass and heat transfer between the colloid and the high-temperature steam, thereby promoting granule forming and improving the solvent removal effect.
[0027] (3) By setting up anti-backflow components, the backflow of mixed solution in the outlet channel is prevented, thus ensuring the safety and stability of the production process. Attached Figure Description
[0028] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0029] Figure 1 This invention provides a schematic diagram of the structure of a pellet forming device for a chain-end functionalized solution polystyrene-butadiene rubber agglomeration production unit.
[0030] Figure 2 for Figure 1 The schematic diagram of the granule molding machine shown is as follows.
[0031] Figure 3 for Figure 2 A schematic diagram of the granule molding machine shown in the image from another perspective;
[0032] Figure 4 for Figure 3 A partial cross-sectional view of the pellet forming device shown in the figure;
[0033] Figure 5 for Figure 4 A magnified view of a portion of point A in the middle.
[0034] Explanation of reference numerals in the attached figures:
[0035] 100. Granule molding device; 10. Control assembly; 11. Second stop; 12. Control lever; 13. Handwheel; 20. First pipeline; 21. First steam inlet; 30. Second pipeline; 40. Third pipeline; 41. Second steam inlet; 42. First diameter section; 43. Diameter changing section; 44. Second diameter section; 50. Anti-backflow assembly; 60. Outlet pipeline; 61. Liquid inlet; 70. Limiting plate; 80. Locking device; 90. First stop; 200. Dynamic mixer. Detailed Implementation
[0036] The embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
[0037] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a link, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0038] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0039] See Figure 1 This is a schematic diagram of the structure of a pellet forming device for a chain-end functionalized solution-polymerized styrene-butadiene rubber agglomeration production unit provided by an embodiment of this utility model; combined with Figures 2 to 5 The granule forming device includes a dynamic mixer 200 and a granule forming device 100. The dynamic mixer 200 has a discharge port at its top and a stirrer inside. The stirrer is used to disperse and mix the colloid liquid and the dispersant aqueous solution in the dynamic mixer to form a mixed solution. The granule forming device 100 is connected to the discharge port and is used to remove and recover the solvent in the mixed solution. The granule forming device 10 is also equipped with a control component 10, which is used to accelerate the flow rate of the mixed solution from the discharge port into the granule forming device 100.
[0040] Specifically, through the cooperation of the dynamic mixer 200 and the granule forming device 100, the agitator and control components 10 can be adjusted according to the actual pipeline conditions, so that the viscous granules in the mixed solution do not stick together, while achieving a relatively high discharge efficiency.
[0041] Furthermore, the mixer includes a frameless double ribbon mixer, which, compared to ordinary mixers, provides higher uniformity of mixing, effectively avoids problems such as dead zones and blockages, and improves mixing efficiency while shortening mixing time.
[0042] Preferably, the granule forming device 100 includes a first pipe 20 and a second pipe 30. The first pipe 20 is connected to the discharge port, and a first steam inlet 21 is provided on the side wall of the first pipe 20. The second pipe 30 is nested inside the first pipe 20 and is connected to the first pipe 20. The mixed solution is discharged from the granule forming device 100 through the second pipe 30.
[0043] Furthermore, a steam-containing space is formed between the first pipe 20 and the second pipe 30. Before opening the discharge port, high-temperature steam can be introduced from the first steam inlet 21 to preheat the inner walls of the first pipe 20 and the second pipe 30, preventing the granules from sticking together after precipitation due to cold.
[0044] Preferably, the granule forming device 100 further includes a third pipe 40, which is nested inside the second pipe 30, and the first pipe 20, the second pipe 30 and the third pipe 40 are connected. The end of the third pipe 40 away from the discharge port is provided with a second steam inlet 41. The third pipe 40 and the second pipe 30 form an outlet channel for the mixed solution to be discharged.
[0045] Furthermore, based on actual working conditions, high-temperature steam is introduced into the third pipeline 40. The high-temperature steam on both sides of the second outlet channel transfers heat to the mixed solution, thereby avoiding the problem of uneven heating. At the same time, the high-temperature steam accompanies the mixed solution out of the outlet channel to achieve full mass and heat transfer between the adhesive and the steam flow, thereby promoting the formation of adhesive particles and improving the solvent removal effect.
[0046] Preferably, the granule molding machine 100 further includes an anti-backflow component 50, which is embedded between the second pipe 30 and the third pipe 40 to prevent the mixed solution in the outlet channel from flowing back; wherein, when the anti-backflow component 50 is in a first position relative to the third pipe 40, the outlet channel is closed; when the anti-backflow component 50 changes from the first position to the second position relative to the third pipe 40, the outlet channel is opened.
[0047] Preferably, the anti-backflow component 50 is magnetically attracted to the first position;
[0048] Furthermore, in the direction of the discharge port toward the granule forming machine 100, the third pipeline 40 includes a first diameter section 42, a diameter changing section 43, and a second diameter section 44 connected in sequence; wherein, the diameter of the first diameter section 42 is larger than the diameter of the second diameter section 44, and the diameter of the diameter changing section 43 gradually decreases along the direction of the discharge port toward the granule forming machine 100.
[0049] Specifically, based on actual working conditions, when the discharge port is closed, the anti-backflow component 50 is in the first position relative to the third pipeline 40. At this time, one side of the anti-backflow component 50 abuts against the inner wall of the second pipeline 30, and the other side abuts against the outer wall of the first diameter section 42. When the discharge port is opened, the mixed solution impacts the anti-backflow component 50, causing it to move away from the discharge port and separate from the first diameter section 42. This creates a flow gap between the anti-backflow component 50 and the diameter change section 43 and / or the second diameter section 44, allowing the mixed solution to flow at a relatively fast speed. When the discharge port changes from open to closed, the anti-backflow component 50 is magnetically pulled back from the second position to the first position to achieve the anti-backflow function.
[0050] Preferably, the granule forming machine 100 further includes an outlet pipe 60, which is connected to the second pipe 30, and the outlet pipe 60 has an inlet 61 on its wall.
[0051] Specifically, hot water is introduced through the inlet 61, thereby driving the mixed solution after being subjected to high-temperature steam to be discharged, increasing the flow rate of the mixed solution in the discharge pipe 60, while maintaining the temperature of the mixed solution.
[0052] Preferably, a limiting plate 70 is provided at the connection between the outlet pipe 60 and the second pipe 30, and the limiting plate 70 is used to limit the anti-backflow component 50.
[0053] Preferably, a locking device 80 is provided between the dynamic mixer 200 and the granule forming device 100.
[0054] Furthermore, the control component 10 is located within the third conduit 40.
[0055] Preferably, the granule forming machine 100 is provided with a first stop 90 at the connection between the granule forming machine and the discharge port; the control component 10 includes a second stop 11 and a control rod 12 connected to each other; the second stop 11 is located at the discharge port and cooperates with the first stop 90; wherein, when the control rod 12 is pushed to move the second stop 11 closer to the first stop 90, the flow rate of the mixed solution entering the granule forming machine 100 from the discharge port increases; when the control rod 12 is pushed to move the second stop 11 away from the first stop 90, the flow rate of the mixed solution entering the granule forming machine 100 from the discharge port decreases.
[0056] Furthermore, when the first stop 90 abuts against the second stop 11, the discharge port is closed.
[0057] Preferably, a handwheel 13 is provided at the end of the control lever 12 away from the second stop portion 11.
[0058] Furthermore, a stuffing box is provided at the end of the third pipeline 40 away from the outlet. The stuffing box is located at the connection between the control rod 12 and the third pipeline 40, so that the connection between the third pipeline 40 and the control rod 12 is sealed. By setting the stuffing box, a sealing structure is provided to prevent leakage of the mixed solution and entry of external impurities, thus ensuring cleanliness and safety in the production process.
[0059] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.
Claims
1. A pellet forming apparatus for a chain-end functionalized solution-polymerized styrene-butadiene rubber (SBR) agglomeration production unit, characterized in that, The granule forming device includes: A dynamic mixer (200) is provided with a discharge port at the top of the dynamic mixer (200) and a stirrer is provided inside the dynamic mixer (200). The stirrer is used to disperse and mix the adhesive liquid and the dispersant aqueous solution in the dynamic mixer (200) to form a mixed solution. A granule forming device (100) is connected to the discharge port for removing and recovering solvent from the mixed solution. The granule forming device (100) is provided with a control component (10) for accelerating the flow rate of the mixed solution from the discharge port into the granule forming device (100).
2. The granule forming apparatus according to claim 1, characterized in that, The granule molding machine (100) includes: The first pipeline (20) is connected to the discharge port, and the first steam inlet (21) is provided on the side wall of the first pipeline (20). The second pipe (30) is nested inside the first pipe (20) and is connected to the first pipe (20). The mixed solution is discharged from the granule molder (100) through the second pipe (30).
3. The granule forming apparatus according to claim 2, characterized in that, The granule molding machine (100) also includes: The third pipeline (40) is nested inside the second pipeline (30), and the first pipeline (20), the second pipeline (30) and the third pipeline (40) are connected. The third pipeline (40) has a second steam inlet (41) at the end away from the discharge port. The third pipe (40) and the second pipe (30) form an outlet channel for the mixed solution to be discharged.
4. The granule forming apparatus according to claim 3, characterized in that, The granule molding machine (100) also includes: An anti-backflow component (50) is embedded between the second pipeline (30) and the third pipeline (40) to prevent the mixed solution in the outlet channel from flowing back. When the anti-backflow component (50) is in the first position relative to the third pipeline (40), the outlet channel is closed; When the anti-backflow component (50) changes from the first position to the second position relative to the third pipeline (40), the outlet channel is opened.
5. The granule forming apparatus according to claim 4, characterized in that, The anti-backflow component (50) is magnetically attached to the first position.
6. The granule forming apparatus according to claim 5, characterized in that, The granule molding machine (100) also includes: An outlet pipe (60) is provided on the wall of the outlet pipe (60) and the outlet pipe (60) is connected to the second pipe (30).
7. The granule forming apparatus according to claim 6, characterized in that, A limiting plate (70) is provided at the connection between the outlet pipe (60) and the second pipe (30), and the limiting plate (70) is used to limit the anti-backflow component (50).
8. The granule forming apparatus according to any one of claims 1 to 7, characterized in that, A locking device (80) is provided between the dynamic mixer (200) and the granule forming machine (100).
9. The granule forming apparatus according to any one of claims 1 to 7, characterized in that, The granule molding machine (100) is provided with a first stop (90) at the connection between the discharge port and the granule molding machine (100). The control assembly (10) includes a second stop (11) and a control lever (12) that are interconnected. The second stop (11) is provided at the discharge port and cooperates with the first stop (90); When the control lever (12) is pushed to move the second stop (11) closer to the first stop (90), the flow rate increases; when the control lever (12) is pushed to move the second stop (11) away from the first stop (90), the flow rate decreases.
10. The granule forming apparatus according to claim 9, characterized in that, A handwheel (13) is provided at the end of the control lever (12) away from the second stop (11).