A stirring assembly for an epoxy resin reactor

Abstract

This utility model relates to the field of stirring structure technology, specifically to a stirring assembly for an epoxy resin reactor. The assembly includes a reactor body, with a rotating rod inclinedly arranged inside the reactor body. Stirring rods are located at the middle and lower ends of the rotating rod, with the lower end of the rotating rod situated at a corner of the reactor body's bottom surface. A driving assembly is located at the upper part of the reactor body's interior, driving the rotating rod to perform large-scale stirring within the reactor body. A grinding assembly is located near the upper part of the reactor body's interior, used to grind the added coarse particles. Compared to existing technologies, this application solves the problems of difficulty in achieving sufficient stirring in the dead-angle area at the bottom of the reactor body and the reduction in overall preparation uniformity caused by directly adding solid coarse particles.

Description

Technical Field

[0001] This utility model relates to the field of stirring structure technology, and in particular to a stirring assembly for an epoxy resin reactor. Background Technology

[0002] Epoxy resin, a high-performance thermosetting material characterized by epoxy groups, occupies a core position in high-end fields such as aerospace, electronic packaging, and composite materials due to its excellent mechanical strength, chemical stability, and adhesive properties. Its molecules form a three-dimensional cross-linked network through the ring-opening reaction of epoxy groups and curing agents, giving the material irreversible thermosetting properties. However, the successful realization of this process is highly dependent on a key link in industrial production—the stirring structure of the reaction vessel. The stirring structure plays the role of the "process heart" in epoxy resin preparation. It achieves microscopic uniform mixing of epoxy resin and curing agent through shear force and convection diffusion, significantly shortening the reaction induction period and avoiding incomplete curing caused by uneven local concentration. By coordinating forced convection and heat exchange systems to control the reaction temperature field, the temperature difference is controlled within a very small range, preventing explosive polymerization or thermal stress cracking caused by exothermic runaway.

[0003] In current industrial practice, the design of stirring structures in epoxy resin reactors generally suffers from the dual bottlenecks of insufficient three-dimensional mixing efficiency and lack of raw material pretreatment. Although the mainstream vertical axial stirring paddle can achieve basic rotational motion, its fluid action area is highly dependent on the radial coverage of the paddle blades, forming a significant "stirring blind zone" in the geometrically constrained area at the bottom of the reactor. Due to the interference of the complex flow field at the junction of the reactor wall and the bottom surface, the fluid shear force decreases sharply, making it difficult for epoxy resin and curing agent to form effective molecular-level contact in the dead zone, thus reducing the mixing effect. In addition, the existing process system has significant shortcomings in the particle size control of the added materials: solid additives are directly added without pre-dispersion treatment, and their particle size distribution often spans more than two orders of magnitude. Coarse particles are prone to forming stress concentration points in the resin matrix, resulting in poor overall uniformity of the preparation.

[0004] Furthermore, we disclose a stirring assembly for an epoxy resin reactor to meet the practical needs of achieving sufficient stirring in the dead corner area at the bottom of the reactor, which is difficult to achieve in the prior art, and the reduction of overall preparation uniformity caused by the direct addition of solid coarse particles. Utility Model Content

[0005] In view of this, the purpose of this utility model is to propose a stirring component for an epoxy resin reactor, so as to solve the problems in the prior art that it is difficult to achieve sufficient stirring in the dead corner area at the bottom of the reactor and that the direct addition of solid coarse particles will reduce the overall uniformity of the preparation.

[0006] To achieve the above objectives, this utility model provides a stirring assembly for an epoxy resin reactor, comprising a reactor body, a rotating rod inclinedly arranged inside the reactor body, and stirring rods provided at the middle and lower ends of the rotating rod. The lower end of the rotating rod is located at the corner of the bottom surface of the reactor body. A driving assembly is provided at the upper end of the reactor body, which is used to drive the rotating rod to perform large-scale stirring inside the reactor body. A grinding assembly is provided near the upper end of the reactor body, which is used to grind the added coarse particles.

[0007] Preferably, the drive assembly includes a drive motor installed in the middle of the top surface of the vessel body. The output end of the drive motor extends into the interior of the vessel body and is fixedly connected to a spline shaft. The lower end of the spline shaft is fixedly connected to a lower plate. The lower end of the lower plate is fixedly connected to a connecting rod. One side of the connecting rod is fixedly connected to a rotating rod.

[0008] Preferably, the drive assembly further includes a fixed bevel gear fixedly connected to the middle of the top surface of the vessel body, the output end of the drive motor passes through the fixed bevel gear, and there is a gap between the output end of the drive motor and the fixed bevel gear, a movable bevel gear is fixedly connected to the upper end of the rotating rod, the movable bevel gear meshes with the fixed bevel gear, a cross is fixedly connected to the upper part of the inner middle of the vessel body, a ball head is fixedly connected to the middle of the outer wall of the rotating rod, and the middle of the rotating rod is rotatably connected to the cross through the ball head.

[0009] Preferably, an abutment plate is fixedly connected to the upper end of the inner wall of the vessel body, and the outer wall of the rotating rod is in contact with the inner wall of the abutment plate.

[0010] Preferably, the grinding assembly includes a fixed cylinder fixedly connected to the lower end of the fixed bevel gear, and a grinding disc is disposed inside the fixed cylinder. The inner wall shape of the fixed cylinder and the outer wall shape of the grinding disc are both conical. The spline shaft passes through the middle of the grinding disc and is engaged and slidably connected with the grinding disc.

[0011] Preferably, the outer wall of the grinding disc is fixedly connected with a plurality of convex balls at uniform intervals, the inner wall of the fixing cylinder is provided with a plurality of grooves that are adapted to the convex balls at uniform intervals, the corners of the grooves and the convex balls are provided with rounded corners, and the upper end of the grinding disc is arc-shaped.

[0012] Preferably, a return spring is fixedly connected to the outer side of the upper end face of the lower plate. The return spring is located outside the spline shaft. An upper plate is fixedly connected to the upper end of the return spring. A plurality of rollers are evenly spaced on the upper end face of the upper plate. The outer wall of the rollers is in contact with the lower end of the grinding disc.

[0013] Preferably, a feeding port is fixedly connected to one side of the upper middle part of the vessel body, and a discharge pipe is fixedly connected to the lower end of the feeding port, with the lower end of the discharge pipe extending into the upper part of the interior of the fixed cylinder.

[0014] The beneficial effects of this utility model are:

[0015] 1. The stirring assembly of this epoxy resin reactor features a rotor that combines revolution and rotation within the reactor body. This allows the stirring rod to cover a wider stirring range, particularly enabling the lower end of the rotor to reach into the dead-angle areas at the bottom of the reactor for stirring. This composite stirring method, achieved through the drive assembly, effectively solves the problem of insufficient three-dimensional mixing efficiency in traditional epoxy resin reactor stirring structures. The combined revolution and rotation stirring mode overcomes the "stirring blind zone" formed by the geometric constraints at the bottom of the reactor, allowing the stirring rod to penetrate into dead-angle areas such as the bottom corners of the reactor body. This enhances fluid shear force, promotes full contact and mixing of epoxy resin and curing agent at various locations within the reactor body, achieves uniform molecular-level dispersion, significantly improves mixing effect, ensures product quality and reaction efficiency, and lays a good foundation for subsequent reaction stages.

[0016] 2. The stirring assembly of this epoxy resin reactor, with its unique composite motion of the grinding disc and conical grinding space, can perform efficient and fine grinding of added coarse particles, effectively compensating for the deficiencies in the raw material pretreatment stage. This provides uniformly sized and reliable raw materials for the subsequent thorough mixing and reaction of epoxy resin and curing agent, ensuring the reaction effect from the source. The rounded corners at the corners of the convex balls and grooves greatly reduce friction and wear between them, significantly extending the service life of the equipment and reducing maintenance costs and downtime caused by equipment wear and tear. Furthermore, the arc-shaped design at the top of the grinding disc helps the material slide smoothly during the grinding process, preventing material accumulation on top of the grinding disc and effectively improving grinding efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the internal three-dimensional structure of the present invention;

[0020] Figure 3 This is a partial three-dimensional structural diagram of the present invention;

[0021] Figure 4 This is a partial three-dimensional explosion diagram of the present invention;

[0022] Figure 5 This is a three-dimensional structural diagram of the upper plate of this utility model.

[0023] The diagram is marked as follows:

[0024] 1. Kettle body; 2. Drive motor; 3. Feed port; 4. Contact plate; 5. Fixed cylinder; 6. Ball head; 7. Stirring rod; 8. Cross; 9. Connecting rod; 10. Rotating rod; 11. Movable bevel gear; 12. Fixed bevel gear; 13. Discharge pipe; 14. Groove; 15. Convex ball; 16. Grinding disc; 17. Return spring; 18. Lower plate; 19. Splined shaft; 20. Upper plate; 21. Roller. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0026] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0027] like Figures 1 to 5 As shown, a stirring assembly for an epoxy resin reactor includes a reactor body 1. A rotating rod 10 is inclinedly arranged inside the reactor body 1. Stirring rods 7 are arranged at the middle and lower ends of the rotating rod 10. The lower end of the rotating rod 10 is located in the dead corner area at the corner of the bottom surface inside the reactor body 1. A driving assembly is arranged at the upper end of the interior of the reactor body 1. The driving assembly is used to drive the rotating rod 10 to perform large-scale stirring inside the reactor body 1. A grinding assembly is arranged near the upper end of the interior of the reactor body 1. The grinding assembly is used to grind the added coarse particles.

[0028] This epoxy resin reactor's stirring assembly integrates high-efficiency stirring and raw material pretreatment functions, innovatively solving the problems of insufficient mixing efficiency and lack of raw material pretreatment in traditional stirring structures. Its core drive component consists of a drive motor 2, a bevel gear set, and a crossbeam 8. The motor drives the rotating rod 10 to revolve via a splined shaft 19, while simultaneously causing the rotating rod 10 to rotate on its own axis through bevel gear engagement. Combined with the support of the ball head 6 and the crossbeam 8, and the guidance of the contact plate 4, the stirring rod 7 forms a large-scale composite motion trajectory within the reactor, effectively eliminating dead zones at the bottom of the reactor body 1, enhancing fluid shear force, improving three-dimensional mixing effects, and simultaneously integrating... The grinding assembly is linked by a drive shaft. The grinding disc 16 rotates under the drive of the spline shaft 19. The outer wall convex ball 15 periodically meshes with the inner wall groove 14 of the fixed cylinder 5. With the elastic support of the return spring 17, a compound motion mode of "rotation + up and down reciprocating" is formed to efficiently grind the coarse particles that enter through the feed port 3 and the discharge pipe 13. The conical grinding surface and arc-shaped disc design further optimize the grinding efficiency and discharge smoothness. The two components work together to form a closed-loop process from raw material pretreatment to mixing and stirring, which significantly improves the reaction efficiency and product quality of epoxy resin production.

[0029] Furthermore, such as Figures 1 to 3 As shown, the drive assembly includes a drive motor 2 installed in the middle of the top surface of the vessel body 1. The output end of the drive motor 2 extends into the interior of the vessel body 1 and is fixedly connected to a spline shaft 19. The lower end of the spline shaft 19 is fixedly connected to a lower plate 18. The lower end of the lower plate 18 is fixedly connected to a connecting rod 9. One side of the connecting rod 9 is fixedly connected to a rotating rod 10. The drive assembly also includes a fixed bevel gear 12 fixedly connected in the middle of the inner top surface of the vessel body 1. The output end of the drive motor 2 passes through the fixed bevel gear 12, and there is a gap between the output end of the drive motor 2 and the fixed bevel gear 12. The upper end of the rotating rod 10 is fixedly connected to a movable bevel gear 11, which meshes with the fixed bevel gear 12. A cross 8 is fixedly connected to the upper part of the inner middle of the vessel body 1. A ball head 6 is fixedly connected to the middle of the outer wall of the rotating rod 10. The middle part of the rotating rod 10 is rotatably connected to the cross 8 through the ball head 6. A contact plate 4 is fixedly connected to the upper part of the inner wall of the vessel body 1. The outer wall of the rotating rod 10 contacts the inner wall of the contact plate 4.

[0030] The drive assembly mainly consists of a drive motor 2, a splined shaft 19, a lower plate 18, a connecting rod 9, a fixed bevel gear 12, a movable bevel gear 11, a cross 8, a ball head 6, and a contact plate 4. These components work together to achieve large-scale stirring of the rotating rod 10 within the vessel body 1. The drive motor 2 is installed in the middle of the top surface of the vessel body 1, with its output end extending into the vessel body 1 to provide power for the entire stirring process. The output end of the drive motor 2 is fixedly connected to the splined shaft 19, the lower end of the splined shaft 19 is fixedly connected to the lower plate 18, and the lower end of the lower plate 18 is fixedly connected to the connecting rod 9. The connecting rod 9 has one side... Fixedly connected to the rotating rod 10, when the drive motor 2 starts, its output end drives the spline shaft 19 to rotate. The spline shaft 19 transmits the rotational power sequentially to the lower plate 18 and the connecting rod 9, thereby driving the rotating rod 10 to start rotating. This is the power transmission path for the basic rotational motion of the stirring assembly. A fixed bevel gear 12 is fixedly connected to the middle of the top surface inside the vessel body 1. The output end of the drive motor 2 passes through the fixed bevel gear 12 with a gap between them. A movable bevel gear 11 is fixedly connected to the upper end of the rotating rod 10. The movable bevel gear 11 meshes with the fixed bevel gear 12. As the rotating rod 10 rotates with the connecting rod 9... During operation, due to the meshing of the movable bevel gear 11 and the fixed bevel gear 12, the movable bevel gear 11 revolves around the fixed bevel gear 12 while also rotating on its own axis. The rotation of the movable bevel gear 11 drives the rotating rod 10 to rotate, thus causing the rotating rod 10 to revolve around the axis of the output end of the drive motor 2 while also rotating on its own axis. This compound motion greatly expands the stirring range. The cross 8 is fixedly connected to the upper part of the middle of the inner part of the vessel body 1, and the ball head 6 is fixedly connected to the middle of the outer wall of the rotating rod 10. The middle part of the rotating rod 10 is rotatably connected to the cross 8 through the ball head 6. Next, the cooperation between the cross 8 and the ball head 6 provides stable rotational support for the rotating rod 10, ensuring that the rotating rod 10 can run smoothly during revolution and rotation, reducing the impact of vibration and deviation on the stirring effect. The upper end of the inner wall of the vessel body 1 is fixedly connected to the contact plate 4, and the outer wall of the rotating rod 10 contacts the inner wall of the contact plate 4. The contact plate 4 plays the role of guiding and restricting the movement trajectory of the rotating rod 10, so that the rotating rod 10 can revolve and rotate on the predetermined track, ensuring the stability and accuracy of the stirring motion, and avoiding the rotating rod 10 from shaking or deviating from the expected stirring range during the movement.

[0031] Furthermore, such as Figures 1 to 5As shown, the grinding assembly includes a fixed cylinder 5 fixedly connected to the lower end of the fixed bevel gear 12. A grinding disc 16 is disposed inside the fixed cylinder 5. Both the inner wall of the fixed cylinder 5 and the outer wall of the grinding disc 16 are conical. A spline shaft 19 passes through the middle of the grinding disc 16 and is engaged and slidably connected with it. Multiple convex balls 15 are evenly spaced and fixedly connected to the outer wall of the grinding disc 16. Multiple grooves 14, which are adapted to the convex balls 15, are evenly spaced on the inner wall of the fixed cylinder 5. Rounded corners are provided at the corners of the grooves 14 and the convex balls 15. The upper end of the grinding disc 16 is arc-shaped. A return spring 17 is fixedly connected to the outer side of the upper end face of the lower plate 18. The return spring 17 is located outside the spline shaft 19. An upper plate 20 is fixedly connected to the upper end of the return spring 17. Multiple rollers 21 are evenly spaced on the upper end face of the upper plate 20. The outer wall of the rollers 21 is in contact with the lower end of the grinding disc 16. A feeding port 3 is fixedly connected to one side of the upper middle part of the vessel body 1. A discharge pipe 13 is fixedly connected to the lower end of the feeding port 3. The lower end of the discharge pipe 13 extends into the upper end of the fixed cylinder 5.

[0032] The drive motor 2 drives the spline shaft 19 to rotate. Because the spline shaft 19 is engaged and slidably connected with the grinding disc 16, it drives the grinding disc 16 to rotate synchronously. When the grinding disc 16 rotates, the multiple protruding balls 15 on its outer wall interact with the multiple grooves 14 evenly spaced on the inner wall of the fixed cylinder 5. As the protruding balls 15 gradually enter the grooves 14, the grooves 14 provide upward support and guidance for the protruding balls 15, and under the initial elastic support of the return spring 17, the grinding disc 16 will move upward. When the protruding balls 15 gradually disengage from the grooves 14, the grinding disc 16 loses the support of the grooves 14 and, under its own weight and subsequent... Under the combined effects of factors such as the downward compression of materials, the material overcomes the elastic force of the return spring 17 and begins to move downward. At the same time, the upper end of the return spring 17 contacts the lower end of the grinding disc 16 through the upper plate 20 and the roller 21. The roller 21 can reduce the friction between the two and ensure the smooth up-and-down movement of the grinding disc 16. The coarse particles added from the feed port 3 at the upper end of the vessel body 1 enter the upper end of the fixed cylinder 5 through the discharge pipe 13. In the grinding space formed by the conical inner wall of the fixed cylinder 5 and the conical outer wall of the grinding disc 16, the material is subjected to the dual forces of the up-and-down reciprocating motion and the rotational motion of the grinding disc 16 and is fully ground and refined.

[0033] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0034] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An epoxy resin reactor stirring assembly, characterized by: The vessel includes a vessel body (1), inside which a rotating rod (10) is inclinedly arranged. Stirring rods (7) are provided at the middle and lower ends of the rotating rod (10). The lower end of the rotating rod (10) is located at the corner of the inner bottom surface of the vessel body (1). A driving assembly is provided at the upper end of the vessel body (1) to drive the rotating rod (10) to stir inside the vessel body (1). A grinding assembly is provided at the upper end of the vessel body (1) to grind the added coarse particles. The driving assembly includes a driving motor (2) installed in the middle of the top surface of the vessel body (1). The output end of the driving motor (2) extends into the interior of the vessel body (1) and is fixedly connected to a splined shaft (19). A lower plate (18) is fixedly connected to the lower end of the splined shaft (19), and a connecting rod (9) is fixedly connected to the lower end of the lower plate (18). One side of the connecting rod (9) is fixedly connected to the rotating rod (10). The driving assembly also includes a fixed bevel gear (12) fixedly connected to the middle of the inner top surface of the vessel body (1). The output end of the driving motor (2) passes through the fixed bevel gear (12), and there is a gap between the output end of the driving motor (2) and the fixed bevel gear (12). The upper end of the rotating rod (10) is fixedly connected to a movable bevel gear (11), which meshes with the fixed bevel gear (12). The upper part of the inner middle of the vessel body (1) is fixedly connected to a cross (8). The middle of the outer wall of the rotating rod (10) is fixedly connected to a ball head (6). The middle of the rotating rod (10) is rotatably connected to the cross (8) through the ball head (6). The upper end of the inner wall of the vessel body (1) is fixedly connected to a contact plate (4), and the outer wall of the rotating rod (10) contacts the inner wall of the contact plate (4).

2. The stirring assembly for an epoxy resin reactor according to claim 1, characterized in that: The grinding assembly includes a fixed cylinder (5) fixedly connected to the lower end of the fixed bevel gear (12). A grinding disc (16) is provided inside the fixed cylinder (5). The inner wall shape of the fixed cylinder (5) and the outer wall shape of the grinding disc (16) are both conical. The spline shaft (19) passes through the middle of the grinding disc (16) and is engaged and slidably connected with the grinding disc (16).

3. The stirring assembly for an epoxy resin reactor according to claim 2, characterized in that: The outer wall of the grinding disc (16) is fixedly connected with a plurality of convex balls (15) at uniform intervals. The inner wall of the fixing cylinder (5) is provided with a plurality of grooves (14) that are adapted to the convex balls (15) at uniform intervals. The corners of the grooves (14) and the convex balls (15) are rounded. The upper end of the grinding disc (16) is arc-shaped.

4. The stirring assembly for an epoxy resin reactor according to claim 3, characterized in that: A return spring (17) is fixedly connected to the outer side of the upper end face of the lower plate (18). The return spring (17) is located outside the spline shaft (19). An upper plate (20) is fixedly connected to the upper end of the return spring (17). A plurality of rollers (21) are evenly spaced on the upper end face of the upper plate (20). The outer wall of the rollers (21) is in contact with the lower end of the grinding disc (16).

5. The stirring assembly for an epoxy reactor according to claim 4, wherein: A feeding port (3) is fixedly connected to one side of the upper middle part of the vessel body (1), and a discharge pipe (13) is fixedly connected to the lower end of the feeding port (3). The lower end of the discharge pipe (13) extends into the upper part of the fixed cylinder (5).

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