High-toughness polyurethane composite material preparation equipment
By improving the structure and process parameters of the mixing tank, reaction vessel, and molding equipment, the problems of uneven mixing, insufficient temperature control, and insufficient microstructure regulation in the existing equipment were solved, realizing the efficient preparation and large-scale production of high-toughness polyurethane composite materials.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-25
- Publication Date
- 2026-04-21
AI Technical Summary
Existing polyurethane composite material preparation equipment suffers from uneven mixing, insufficient temperature control precision, and a lack of ability to regulate the microstructure of materials in molding equipment. As a result, the toughness of the materials cannot meet expectations, and the degree of automation is low, making it difficult to achieve large-scale continuous production.
The system employs an improved structure for the mixing tank, reaction vessel, and molding equipment. It precisely controls the raw material ratio through a metering pump, enhances mixing uniformity through a mixing component, ensures the cleanliness of the inner wall of the reaction vessel through a scraping mechanism, removes air bubbles through a degassing machine, controls the reaction temperature through heating and water cooling components, and achieves precise molding through a curing component, thereby improving the automation level of the equipment.
It enables precise control of the microstructure of polyurethane composite materials, significantly improves material toughness and molding quality, reduces production costs, and meets the needs of large-scale production of high-toughness polyurethane composite materials.
Smart Images
Figure CN224145051U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of polymer material processing technology, and in particular to a high-toughness polyurethane composite material preparation equipment. Background Technology
[0002] Polyurethane composites are widely used in industrial production and daily life due to their excellent mechanical properties, wear resistance, and corrosion resistance. In recent years, with the continuous improvement of market requirements for material performance, especially the increasing demand for material toughness, traditional polyurethane composite preparation technology can hardly meet the actual needs. At present, domestic and foreign research mainly focuses on improving the toughness of polyurethane composites by adding reinforcing fillers, optimizing formulations, and improving processes. However, these methods have problems such as complex processes, high costs, or insignificant effects. There is an urgent need to develop an efficient and stable preparation equipment to achieve large-scale production of high-toughness polyurethane composites.
[0003] Existing polyurethane composite material preparation equipment mainly includes mixing equipment, reaction vessels, and molding equipment. Mixing equipment typically uses a high-speed stirrer to uniformly mix polyurethane raw materials and fillers; the reaction vessel completes the polymerization reaction; and the molding equipment processes the reacted material into the final product. In addition, some advanced equipment is equipped with temperature control systems and vacuum degassing devices to improve material properties and reduce defects.
[0004] Current equipment suffers from uneven mixing, leading to unstable material properties; insufficient temperature control precision in the reactor affects material toughness; and molding equipment lacks effective control over the microstructure of the material. The main drawback of existing technology is the insufficient control of the material's microstructure by the equipment, resulting in the prepared polyurethane composite material failing to achieve the expected toughness level. In addition, the existing equipment has a low degree of automation, making it difficult to achieve large-scale continuous production, which increases production costs and process complexity. Therefore, a high-toughness polyurethane composite material preparation equipment is proposed to solve the above problems. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a high-toughness polyurethane composite material preparation equipment, aiming to improve the existing technology on how to achieve precise control of the microstructure of polyurethane composite materials by improving equipment structure and process parameters, thereby improving the toughness of the material; and how to improve the automation level and production efficiency of the equipment to meet the needs of large-scale production of high-toughness polyurethane composite materials.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A high-toughness polyurethane composite material preparation device includes a mixing tank, a manufacturing mechanism externally mounted on the mixing tank, a reaction vessel fixedly connected to the rear end of the mixing tank, a scraping mechanism internally mounted on the reaction vessel, and a plurality of conveying pipes. The proximal sides of the conveying pipes are fixedly connected to the outside of the mixing tank, with metering pumps externally mounted on two of the conveying pipes. A main material silo and an auxiliary material silo are fixedly connected to the external sides of these two conveying pipes, respectively. The front end of the last conveying pipe is fixedly connected to the rear end of the reaction vessel. A degassing machine is fixedly connected to the outside of the reaction vessel. A mixing assembly is internally mounted on the mixing tank, a twin-screw extruder is fixedly connected to the bottom of the reaction vessel, and a curing assembly is located at the front end of the reaction vessel.
[0008] Through the above technical solution: the high-toughness polyurethane composite material preparation equipment uses a mixing tank as the starting unit, and the external manufacturing mechanism is connected to it through a conveying pipe. Two of the conveying pipes, with the help of metering pumps, precisely control the amount of raw materials delivered from the main material bin and the auxiliary material bin to the mixing tank, ensuring accurate raw material ratio and laying the foundation for subsequent uniform mixing. The other conveying pipe is responsible for conveying the uniformly mixed material to the downstream reaction vessel, realizing the connection of processes. The external degassing machine connected to the reaction vessel can effectively remove air bubbles from the material and improve product quality.
[0009] As a further description of the above technical solution:
[0010] The mixing assembly includes a motor, the bottom of which is fixedly connected to the top of the mixing tank. The drive end of the motor is fixedly connected to a rotating shaft. An inclined stirring blade and a straight stirring blade are fixedly connected to the outside of the rotating shaft. A spiral guide plate is fixedly connected to the inside of the mixing tank.
[0011] Through the above technical solution: a motor is installed at the top of the mixing tank, driving the rotating shaft to rotate. The inclined stirring blades and straight stirring blades on the shaft operate in opposite directions. Together with the spiral guide plate inside the mixing tank, the material is guided to form a complex vortex, which greatly improves the mixing efficiency and uniformity of the raw materials in the mixing tank, allowing the components to fully blend and optimize the performance of the composite material.
[0012] As a further description of the above technical solution:
[0013] The curing component includes a bottom film, the rear end of which is fixedly connected to the front end of the reactor, and a plurality of fixed columns are fixedly connected to the top end of the bottom film. A sliding plate is slidably connected to the outside of the plurality of fixed columns, a top film is fixedly connected to the bottom end of the sliding plate, and a cylinder is fixedly connected to the top end of the sliding plate.
[0014] The above technical solution involves connecting the bottom membrane to the front end of the reactor. The fixed column at the top of the bottom membrane, together with the sliding plate, the top membrane, and the cylinder, allows the cylinder to control the downward pressure of the top membrane after the material is extruded, applying pressure to the material and causing it to solidify and form a preset shape between the bottom membrane and the top membrane, thus ensuring the accuracy of the product shape.
[0015] As a further description of the above technical solution:
[0016] The reactor is equipped with a heating element on its exterior and a water cooling element on its exterior.
[0017] Through the above technical solution: the heating component provides a suitable temperature for the polymerization reaction in the reactor, promoting the smooth progress of the reaction; the water cooling component cools down the reaction in time when the reaction temperature is too high, accurately controls the reaction temperature, prevents the reaction process and product quality from being affected by temperature fluctuations, and ensures the stable progress of the reaction.
[0018] As a further description of the above technical solution:
[0019] The bottom membrane is fixedly connected to the outside of an air-cooled component, and the bottom membrane and the top membrane are fixedly connected to the outside of a water-cooled component.
[0020] Through the above technical solution, the air-cooled components outside the bottom film and the water-cooled components outside the bottom and top films work together. The air cooling achieves initial rapid cooling, and the water cooling further enhances the cooling effect, greatly accelerating the material cooling and shaping speed, improving production efficiency, while ensuring the stability of the material's microstructure and improving the product's toughness.
[0021] As a further description of the above technical solution:
[0022] The scraping mechanism includes a second motor, the bottom end of which is fixedly connected to the top of the reactor. A second rotating shaft is fixedly connected to the drive end of the second motor. A fixed box is fixedly connected to the outside of the second rotating shaft. A connecting column is slidably connected inside the fixed box. A scraper is fixedly connected to the outside of the connecting column. Two second sliding plates are slidably connected inside the fixed box. A limiting block is fixedly connected to the adjacent side of each of the two second sliding plates. A telescopic column is fixedly connected to the distant side of each of the two second sliding plates. A spring is sleeved on the outside of the telescopic column. The two limiting blocks are slidably connected to the outside of the connecting column. A sealing ring is provided inside the fixed box.
[0023] Through the above technical solution: Motor 2 drives the rotating shaft 2 to rotate, causing the fixed box, internal connecting column and scraper to rotate accordingly. The scraper scrapes against the inner wall of the reactor to remove the attached material in time, avoid local overheating of the material or uneven reaction, improve the heat transfer efficiency of the reactor, and ensure that the reaction proceeds uniformly and efficiently. Its unique internal structure design provides convenience for scraper maintenance and replacement.
[0024] As a further description of the above technical solution:
[0025] The front end of the spring is fixedly connected to the inside of the fixed box, and the other end of the spring is fixedly connected to the end of the sliding plate away from the limiting block.
[0026] Through the above technical solution: the spring is installed between the fixed box and the second sliding plate, with one end fixed inside the fixed box and the other end connected to the second sliding plate. When the connecting column slides, the spring pushes the second sliding plate and the limiting block with the thrust generated by the elastic deformation, so as to realize the automatic locking and unlocking of the position of the connecting column, which facilitates the quick disassembly and assembly of the scraper.
[0027] As a further description of the above technical solution:
[0028] The inside of the sealing ring is in contact with the outside of the connecting column, and the far ends of the two telescopic columns are fixedly connected to the inside of the fixed box.
[0029] Through the above technical solution: the sealing ring surrounds the connecting column and fits tightly to its outside, effectively preventing the leakage of materials or gas in the reactor from the connection between the fixed box and the connecting column, ensuring a stable reaction environment; the two ends of the telescopic column are fixed inside the fixed box, providing stable support and precise guidance for the sliding plate II, ensuring the stable operation of the scraping mechanism.
[0030] This utility model has the following beneficial effects:
[0031] 1. In this utility model, by improving the stirring and mixing system and the reaction system, the microstructure of polyurethane composite material is precisely controlled, which significantly improves the toughness of the material. By optimizing the molding system and adding a microstructure adjustment unit, the molding quality and surface properties of the material are improved. By improving the automation level and production efficiency of the equipment, the large-scale production needs of high-toughness polyurethane composite material are met, and the production cost and process complexity are reduced.
[0032] 2. In this utility model, during the preparation of high-toughness polyurethane composite materials, the motor drives the rotating shaft, which in turn drives the connecting column and scraper to rotate. The scraper continuously scrapes the inner wall of the reactor. On the one hand, it removes the material adhering to the inner wall in a timely manner, effectively avoiding local overheating of the material and uneven reaction, thus ensuring the smooth progress of the polymerization reaction. At the same time, it improves the heat transfer efficiency of the reactor and promotes efficient reaction. On the other hand, when the scraper needs to be maintained or replaced, the operator slides the rotating shaft out of the reactor. At this time, the scraper, which is no longer pressed by the inner wall, can quickly slide its connecting column out of the fixing box. Since the outer part of the limiting block is arc-shaped, when the connecting column slides, the limiting block automatically moves in and out of the hole of the connecting column with the help of the spring pushing the sliding plate, thereby realizing the fixing and cancellation of the position of the connecting column, thus conveniently completing the quick disassembly and assembly of the scraper. Attached Figure Description
[0033] Figure 1 This is a three-dimensional schematic diagram of a high-toughness polyurethane composite material preparation device proposed in this utility model;
[0034] Figure 2 This is a schematic diagram of the scraper structure of a high-toughness polyurethane composite material preparation equipment proposed in this utility model;
[0035] Figure 3 for Figure 2 Enlarged view of point A in the middle;
[0036] Figure 4 for Figure 2 Enlarged view of point B in the middle.
[0037] Legend:
[0038] 1. Mixing tank; 2. Manufacturing mechanism; 21. Main material silo; 22. Auxiliary material silo; 23. Metering pump; 24. Feed pipe; 25. Deaerator; 26. Mixing assembly; 261. Motor 1; 262. Rotating shaft 1; 263. Inclined stirring blade; 264. Straight stirring blade; 265. Spiral guide plate; 27. Curing assembly; 271. Bottom film; 272. Fixed column; 273. Sliding plate 1; 274. Top film; 275. Cylinder; 3. Scraping mechanism; 31. Motor 2; 32. Rotating shaft 2; 33. Fixed box; 34. Connecting column; 35. Scraper; 36. Sliding plate 2; 37. Limiting block; 38. Sealing ring; 39. Spring; 310. Telescopic column; 4. Water-cooled component 1; 5. Water-cooled component 2; 6. Air-cooled component; 7. Heating component; 8. Reactor. Detailed Implementation
[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0040] Reference Figures 1 to 3This utility model provides an embodiment of a high-toughness polyurethane composite material preparation device, including a mixing tank 1. The mixing tank 1 is an important component for mixing the raw materials of the polyurethane composite material, providing a uniform material base for subsequent reactions and molding. A fabrication mechanism 2 is provided on the outside of the mixing tank 1. The fabrication mechanism 2 plays a key role in connecting and conveying the raw materials and guiding the mixed materials into the next process. The fabrication mechanism 2 works in conjunction with the mixing tank 1 and other components to ensure the continuity of the entire preparation process. A reaction vessel 8 is fixedly connected to the rear end of the mixing tank 1. The reaction vessel 8 is the core device for carrying out the polymerization reaction, providing a suitable space and environment for the chemical reaction of the polyurethane composite material. A scraping mechanism 3 is provided inside the reaction vessel 8.
[0041] The manufacturing mechanism 2 includes multiple conveying pipes 24, with adjacent sides of the multiple conveying pipes 24 fixedly connected to the outside of the mixing tank 1. Each of the two conveying pipes 24 is equipped with a metering pump 23. The metering pump 23 can accurately control the flow rate of the main material and auxiliary material entering the mixing tank 1, ensuring that the raw materials are mixed in a precise ratio, thereby improving the stability of product quality. The two conveying pipes 24 are respectively fixedly connected to the main material bin 21 and the auxiliary material bin 22. The multiple conveying pipes 24 form a channel network for conveying raw materials. The multiple conveying pipes 24 connect the main material bin 21, the auxiliary material bin 22, and the reactor 8, ensuring that the raw materials can be accurately conveyed to the corresponding positions. The main material bin 21 is used to store the main raw materials required for the preparation of polyurethane composite materials, while the auxiliary material bin 22 stores auxiliary raw materials. Both are connected to the mixing tank 1 through the conveying pipes 24 and the metering pump 23 to provide raw material support for the mixing process. The front end of the last conveying pipe 24 is fixedly connected to the rear end of the reactor 8.
[0042] The feed pipe 24 transports the uniformly mixed raw materials in the mixing tank 1 to the reactor 8 for the next polymerization reaction. A degassing machine 25 is fixedly connected to the outside of the reactor 8. The degassing machine 25, connected to the reactor 8, can effectively remove the bubbles generated during the reaction, preventing bubbles from remaining in the composite material and affecting its performance, thus improving the quality of the product. The mixing tank 1 is equipped with a mixing component 26, which is the key part to achieve full mixing of raw materials. The mixing component is driven to rotate by a motor 261, and in conjunction with the spiral guide plate 265, the raw materials are mixed into a uniform mixture. A twin-screw extruder is fixedly connected to the bottom of the reactor 8. The twin-screw extruder can extrude the reacted material in the reactor 8, providing a continuous material flow for subsequent molding. At the same time, the material is further plasticized and homogenized during the extrusion process. A curing component 27 is set at the front end of the reactor 8. The function of the curing component 27 is to cure and mold the extruded material into a high-toughness polyurethane composite material product with the required shape and performance. The mixing component 26 includes a motor 261, which provides the power source for the mixing component 26.
[0043] Motor 261 is connected to the stirring component via its drive end, driving the stirring component to rotate within the mixing tank 1 to achieve the mixing operation of raw materials. The bottom end of motor 261 is fixedly connected to the top end of mixing tank 1. A rotating shaft 262 is fixedly connected to the drive end of motor 261. The rotating shaft 262 rotates under the drive of motor 261 and is a key component connecting motor 261 and stirring blades, transmitting the power of the motor. An inclined stirring blade 263 and a straight stirring blade 264 are fixedly connected to the outside of the rotating shaft 262. The inclined stirring blade 263 pushes the raw materials downward, causing the raw materials to flow up and down within the mixing tank 1, increasing the degree of mixing. The straight stirring blade 264 flips the raw materials upward, working in conjunction with the inclined stirring blade 263 to further promote uniform mixing of the raw materials. A spiral guide plate 265 is fixedly connected inside the mixing tank 1. The spiral guide plate 265 guides the raw materials to form vortices, creating a more complex flow trajectory within the mixing tank 1, ensuring uniform mixing and improving mixing effect and efficiency.
[0044] The curing assembly 27 includes a bottom film 271, which is one of the basic components of the curing assembly 27. It provides a supporting and shaping base for the extruded material, while its internal microstructure adjustment unit regulates the material's microstructure. The rear end of the bottom film 271 is fixedly connected to the front end of the reactor 8. Multiple fixing posts 272 are fixedly connected to the top end of the bottom film 271. A sliding plate 273 is slidably connected to the outside of the multiple fixing posts 272. A top film 274 is fixedly connected to the bottom end of the sliding plate 273. The multiple fixing posts 272 are used to fix and support the sliding plate 273, allowing it to slide within a certain range. The sliding plate 273 can... The fixed column 272 slides up and down, and in cooperation with the cylinder 275, it realizes the lifting and lowering action of the top film 274, thereby pressing and curing the extruded material. The top film 274 corresponds to the bottom film 271 and is also equipped with a microstructure adjustment unit inside. Together with the bottom film 271, it precisely controls the microstructure of the material to ensure the high toughness and other properties of the final product. The top of the sliding plate 273 is fixedly connected to the cylinder 275. The cylinder 275 provides power for the lifting and lowering of the sliding plate 273 and the top film 274. By controlling the extension and retraction of the cylinder 275, the position of the top film 274 can be precisely controlled, thereby controlling the pressing and curing process of the material.
[0045] The reactor 8 is externally equipped with a heating element 7, which heats the materials inside the reactor 8, providing the necessary temperature conditions for the polymerization reaction, promoting the reaction, and precisely controlling the temperature as needed to ensure the stability and consistency of the reaction. The reactor 8 is also externally equipped with a water-cooling element 4, which cools the reactor 8. When the reaction temperature is too high, the water-cooling element 4 controls the temperature of the reactor 8 within a suitable range, preventing the reaction from going out of control or affecting product quality. The bottom film 271 is externally fixedly connected to an air-cooling element 6. During the material curing process, the air-cooling element 6 cools the bottom film 271 and the material above it using air cooling, accelerating the cooling rate, improving production efficiency, and helping to ensure the microstructure and properties of the material. The bottom film 271 and the top film 274 are externally fixedly connected to a second water-cooling element 5. The second water-cooling element 5 further enhances the cooling effect on the material. Combined with the air-cooling element 6, the water-cooling element enables the material to cool and solidify quickly, ensuring that the product quality and performance meet requirements.
[0046] Specifically, with the mixing tank 1 as the starting core, the manufacturing mechanism 2 establishes a raw material conveying network using multiple conveying pipes 24. Two of the conveying pipes 24 are connected to metering pumps 23 to precisely control the amount of raw materials conveyed from the main material bin 21 and the auxiliary material bin 22 to the mixing tank 1, ensuring precise mixing according to the specified ratio and improving product quality stability. Inside the mixing tank 1, motor 261 drives rotating shaft 262, causing inclined stirring blades 263 and straight stirring blades 264 to operate in opposite directions. Combined with spiral guide plates 265, this guides the materials to form a complex vortex, efficiently achieving uniform mixing of the raw materials. The uniformly mixed materials enter the reaction vessel 8 through the conveying pipes 24, where a degassing machine 25 outside the vessel promptly removes the reaction-induced bubbles. Bubbles are generated to optimize product quality. The heating component 7 and the water-cooling component 4 outside the reactor 8 work together. The heating component 7 provides a suitable reaction temperature, and the water-cooling component 4 cools down the temperature when it is too high, precisely maintaining the stability and consistency of the reaction. The reacted material is extruded by a twin-screw extruder and pushed to the front curing component 27. The bottom film 271 and the top film 274 of the curing component 27 are equipped with microstructure adjustment units. The cylinder 275 controls the lifting and lowering of the top film 274 to press and cure the material. The air-cooling component 6 outside the bottom film 271 and the water-cooling component 5 outside the bottom film 271 and the top film 274 work together to accelerate the cooling and shaping of the material, ensuring product performance and quality.
[0047] Reference Figure 1 , Figure 2 and Figure 4The scraping mechanism 3 includes a second motor 31, which provides power to the scraping mechanism 3. The bottom end of the second motor 31 is fixedly connected to the top of the reactor 8. A second rotating shaft 32 is fixedly connected to the drive end of the second motor 31. The second rotating shaft 32 rotates under the drive of the second motor 31. A fixed box 33 is fixedly connected to the outside of the second rotating shaft 32. A connecting column 34 is slidably connected inside the fixed box 33. The connecting column 34 is connected to the scraper 35 and rotates with the rotation of the second rotating shaft 32, driving the scraper 35 to scrape the inner wall of the reactor 8. This also helps to improve the heat transfer efficiency of the reactor 8. The fixed box 33 is used for... The fixing box 33 fixes and supports the connecting column 34 and the scraper 35, while providing installation space for components such as the second sliding plate 36, ensuring the structural stability of the scraping mechanism 3. The fixing box 33 has two sliding plates 36 slidably connected inside. The two sliding plates 36 are fixedly connected to the adjacent side of each of the two sliding plates 36, and the two sliding plates 36 are fixedly connected to the distant side of each of the two sliding plates 36. The outside of the telescopic column 310 is fitted with a spring 39. The two sliding plates 36 slide in the fixing box 33. By cooperating with the limiting block 37 and the telescopic column 310, the fixing and release of the connecting column 34 can be realized, thereby facilitating the disassembly and assembly of the scraper 35.
[0048] Two limiting blocks 37 are used to restrict the position of the connecting post 34 within the fixing box 33. When the limiting block 37 is inserted into the hole inside the connecting post 34, the connecting post 34 is fixed, and the scraper 35 can perform scraping work normally. When the limiting block 37 is removed from the hole, the connecting post 34 can slide out of the fixing box 33, facilitating maintenance or replacement of the scraper 35. The telescopic post 310 provides guidance and support for the sliding plate 36, and works with the spring 39 to allow the limiting block 37 to automatically move in and out of the hole inside the connecting post 34, thus fixing and releasing the position of the connecting post 34. The spring 39 provides elastic force to the sliding plate 36. When the connecting post 34 slides within the fixing box 33, the elastic force of the spring 39 pushes the sliding plate. The second 36 allows the limiting block 37 to automatically engage with the hole inside the connecting column 34, thereby fixing and releasing the connecting column 34. The fixing box 33 is equipped with a sealing ring 38 inside. The function of the sealing ring 38 is to ensure the sealing of the inside of the fixing box 33, prevent the material or gas in the reactor 8 from leaking from the connection between the fixing box 33 and the connecting column 34, and ensure the normal operation of the scraping mechanism 3 and the sealing of the reactor 8. The front end of the spring 39 is fixedly connected to the inside of the fixing box 33, and the other end of the spring 39 is fixedly connected to the end of the sliding plate 36 away from the limiting block 37. The inside of the sealing ring 38 is in contact with the outside of the connecting column 34. The far ends of the two telescopic columns 310 are both fixedly connected to the inside of the fixing box 33.
[0049] Specifically, the scraping mechanism 3 is installed inside the reactor 8 and is powered by a motor 31. The motor 31 is fixed at the top of the reactor 8 and drives the rotating shaft 32 to rotate. The rotating shaft 32 drives the fixed box 33. The connecting column 34 inside the box is connected to the scraper 35, so that the scraper 35 continuously scrapes the inner wall of the reactor 8, preventing material adhesion that could cause local overheating or uneven reaction, and effectively improving the heat transfer efficiency of the reactor 8. The two sliding plates 36 inside the fixed box 33 cooperate with the limiting block 37, the telescopic column 310 and the spring 39 to conveniently fix the connecting column 34. When the limiting block 37 is inserted into the hole inside the connecting column 34, the connecting column 34 is stable and the scraper 35 scrapes normally. When maintenance or replacement of the scraper 35 is required, the rotating shaft 2 32 slides out, the connecting column 34 loses the pressure from the inner wall and can slide out from the fixing box 33. The spring 39 pushes the sliding plate 2 36, so that the limiting block 37 is disengaged from the hole of the connecting column 34, realizing the quick disassembly and assembly of the scraper 35. In addition, the sealing ring 38 inside the fixing box 33 fits tightly against the outside of the connecting column 34, effectively preventing the leakage of materials or gas in the reactor 8 and ensuring the stable operation of the scraping mechanism 3 and the reactor 8.
[0050] Working principle: During operation, the main material bin 21 and auxiliary material bin 22 deliver raw materials to the mixing tank 1 via the metering pump 23. The rotating shaft 262 rotates under the drive of the motor 261. The inclined stirring blade 263 pushes the raw materials downward, while the straight stirring blade 264 flips the raw materials upward. The spiral guide plate 265 guides the raw materials to form a vortex, ensuring uniform mixing. The mixed raw materials enter the reactor 8, where the polymerization reaction is completed under the action of the heating component 7, the water cooling component 4, and the degassing machine 25. The reacted material is extruded through the extruder. The microstructure adjustment unit in the bottom film 271 and the top film 274 precisely controls the microstructure of the material. The cooperation of the water cooling component 5 and the air cooling component 6 enables the material to cool and solidify rapidly, ultimately obtaining a high-toughness polyurethane composite material.
[0051] When the stirring blades driven by motor 31 fully react the materials inside the reactor 8, the connecting column 34 rotates with the rotation of the rotating shaft 32, causing the scraper 35 to scrape the inner wall of the reactor 8. The scraper 35 promptly scrapes off the material adhering to the inner wall of the reactor 8, preventing local overheating or uneven reaction due to prolonged material retention, ensuring the smooth progress of the reaction, and also helping to improve the heat transfer efficiency of the reactor 8. When the operator needs to maintain or replace the scraper 35, they can do so by rotating the rotating shaft. Shaft 2 32 slides out of the inside of the reactor 8. At this time, due to the lack of pressure from the inner wall of the reactor 8, scraper 35 can quickly slide connecting column 34 out of the inside of fixed box 33. Because the outside of limiting block 37 is arc-shaped, when connecting column 34 slides inside fixed box 33, it is combined with the spring 39 pushing sliding plate 2 36, so that limiting block 37 automatically moves in and out of the hole inside connecting column 34 to complete the fixing and removal of the position of connecting column 34, and finally complete the quick disassembly and assembly of scraper 35.
[0052] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A high-toughness polyurethane composite material preparation apparatus comprising a stirring tank (1), characterized in that: The mixing tank (1) is provided with a manufacturing mechanism (2) on its exterior. The rear end of the mixing tank (1) is fixedly connected to a reaction vessel (8). The reaction vessel (8) is provided with a scraping mechanism (3) inside. The manufacturing mechanism (2) includes multiple conveying pipes (24). The adjacent sides of the multiple conveying pipes (24) are fixedly connected to the exterior of the mixing tank (1). Two of the conveying pipes (24) are provided with metering pumps (23) on their exteriors. The exteriors of these two conveying pipes (24) are respectively fixedly connected to a main material silo (21) and an auxiliary material silo (22). The front end of the last conveying pipe (24) is fixedly connected to the rear end of the reaction vessel (8). The exterior of the reaction vessel (8) is fixedly connected to a degassing machine (25). The interior of the mixing tank (1) is provided with a mixing component (26). The bottom end of the reaction vessel (8) is fixedly connected to a twin-screw extruder. The front end of the reaction vessel (8) is provided with a curing component (27).
2. The high toughness polyurethane composite material preparation device according to claim 1, characterized in that: The mixing component (26) includes a motor (261), the bottom end of which is fixedly connected to the top of the mixing tank (1), the drive end of which is fixedly connected to a rotating shaft (262), the outside of which is fixedly connected to an inclined stirring blade (263) and a straight stirring blade (264), and the inside of the mixing tank (1) is fixedly connected to a spiral guide plate (265).
3. The high toughness polyurethane composite material preparation device according to claim 2, characterized in that: The curing component (27) includes a bottom film (271), the rear end of which is fixedly connected to the front end of the reactor (8), and a plurality of fixed columns (272) are fixedly connected to the top end of the bottom film (271). A sliding plate (273) is slidably connected to the outside of the plurality of fixed columns (272). A top film (274) is fixedly connected to the bottom end of the sliding plate (273), and a cylinder (275) is fixedly connected to the top end of the sliding plate (273).
4. The high toughness polyurethane composite material preparation device according to claim 3, characterized in that: The reactor (8) is provided with a heating element (7) on the outside and a water cooling element (4) on the outside.
5. The high-toughness polyurethane composite material preparation equipment according to claim 3, characterized in that: The bottom membrane (271) is fixedly connected to the outside of an air-cooled component (6), and the bottom membrane (271) and the top membrane (274) are fixedly connected to the outside of a water-cooled component (5).
6. The high toughness polyurethane composite material preparation apparatus according to claim 1, characterized in that: The scraping mechanism (3) includes a second motor (31), the bottom end of which is fixedly connected to the top of the reactor (8). The driving end of the second motor (31) is fixedly connected to a second rotating shaft (32). A fixed box (33) is fixedly connected to the outside of the second rotating shaft (32). A connecting column (34) is slidably connected inside the fixed box (33). A scraper (35) is fixedly connected to the outside of the connecting column (34). Two sliding plates (36) are slidably connected inside the fixed box (33). A limiting block (37) is fixedly connected to the adjacent side of the two sliding plates (36). A telescopic column (310) is fixedly connected to the distant side of the two sliding plates (36). A spring (39) is sleeved on the outside of the telescopic column (310). The two limiting blocks (37) are slidably connected to the inside of the connecting column (34). A sealing ring (38) is provided inside the fixed box (33).
7. The high-toughness polyurethane composite material preparation equipment according to claim 6, characterized in that: The front end of the spring (39) is fixedly connected to the inside of the fixed box (33), and the other end of the spring (39) is fixedly connected to the end of the sliding plate (36) away from the limiting block (37).
8. The high toughness polyurethane composite material preparation device according to claim 6, characterized in that: The inside of the sealing ring (38) is in contact with the outside of the connecting column (34), and the far ends of the two telescopic columns (310) are fixedly connected to the inside of the fixed box (33).