Banbury mixer for producing foamed material
By improving the structural design of the internal mixer, including the sealing plate, clamping plate, and heating/cooling system, the problems of easy material adhesion and poor sealing were solved, improving the sealing performance and mixing efficiency of the internal mixer and ensuring the stability of product quality and performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEFEI HUAJU WEIKE NEW MATERIALS CO LTD
- Filing Date
- 2025-06-23
- Publication Date
- 2026-05-29
AI Technical Summary
Existing internal mixers used in foam material production tend to cause materials to stick together and clump after processing. The high temperature makes it difficult to remove the materials, resulting in poor sealing and leakage of the foaming agent, which affects product quality and performance.
A mixing mill was designed, comprising a mixing chamber, a sealing plate, a pressing plate, a slide bar, a sealing groove, and a cylinder. The sealing plate and the baffle are fitted together by pushing and pulling the handle to move the components, and a sealing gasket is used to prevent leakage. A drive motor is used to drive the gears and shaft to rotate to enhance the shearing effect. The water inlet pipe is connected to a water pump to achieve uniform heating or cooling, and the cylinder seals the feed inlet.
It improves the sealing performance and temperature control of the internal mixer, prevents material leakage, enhances mixing efficiency, and ensures the stability of product quality and performance.
Smart Images

Figure CN224296224U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of internal mixer technology, specifically to an internal mixer for producing foamed materials. Background Technology
[0002] Foamed materials are functional materials that introduce gas into a substrate through physical or chemical methods to form a porous structure. Their core characteristic is the presence of numerous internal air bubbles, which endow the material with unique properties such as lightweight, heat insulation, cushioning, and sound insulation. An internal mixer is a highly efficient material mixing device. Its core function is to uniformly mix and plasticize raw materials such as polymers, foaming agents, and additives in a closed environment, ensuring thorough mixing under high temperature and pressure to form a homogeneous melt or compound. Since the performance of foamed materials depends on the uniformity of the bubble structure, the internal mixer, through efficient mixing, precise temperature control, and strong shearing action, ensures uniform mixing of raw materials and stable decomposition of the foaming agent. It is an indispensable key piece of equipment in the production of foamed materials, directly affecting the quality and performance of the final product. This utility model proposes an internal mixer for the production of foamed materials.
[0003] According to a search, Chinese patent document CN218476954U discloses a mixing machine for producing foamed materials. By starting a stepper motor, a rotating shaft is driven to rotate, causing the openings of two loading hoppers to tilt upwards. Material to be processed is loaded into one hopper, and then the rotating shaft continues to rotate, causing the opening of the processed hopper to rotate to a horizontal position, facilitating material removal. The other hopper simultaneously processes material, improving processing efficiency and thus worker productivity. However, in actual use, the material is at a high temperature after processing, making it prone to agglomeration and adhesion, hindering easy removal. Furthermore, since the cover plate is only connected to the hopper via magnets, the seal is prone to failure during processing, leading to leakage of small foaming agent molecules, causing a formula imbalance, and reducing product quality and performance. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] To address the shortcomings of existing technologies, this utility model provides a mixing machine for producing foamed materials, which has the advantages of efficient temperature control, good sealing effect, and significantly improved product quality and performance, thus solving the aforementioned technical problems.
[0006] (II) Technical Solution
[0007] To achieve the above objectives, this utility model provides the following technical solution: a mixing mill for producing foamed materials, comprising a processing table, a base, a baffle, a work box, and a support fixedly installed on the top surface of the processing table, a drive motor fixedly installed on the right side of the work box, a rotating shaft installed inside the work box, a gear and a shearing rotor fixedly installed on the outer side of the rotating shaft, a sliding rod fixedly installed on the right side of the base, a mixing chamber, a sealing plate, and a pressing plate slidably installed on the outer side of the sliding rod, a feed inlet installed on the top surface of the mixing chamber, an annular fluid groove opened inside the mixing chamber, a support fixedly installed on the outer side of the baffle, a threaded rod fixedly installed on the left side of the support, and a pressing block and a nut installed on the outer side of the threaded rod.
[0008] Preferably, there are two of each of the rotating shafts and the gears, and four of the shearing rotors. The output shaft of the drive motor is fixedly connected to the right end of one of the rotating shafts, and the two gears are meshed together.
[0009] With the above technical solution, when the drive motor is started, the output shaft of the drive motor can drive one of the rotating shafts and gears to rotate. This gear can then mesh with and drive another gear and rotating shaft to rotate together. Therefore, the four shearing rotors can rotate synchronously inside the mixing chamber, which effectively enhances the friction and shearing of the material and improves the overall mixing efficiency of the device.
[0010] Preferably, there are two bases and two slide bars, and handles are installed on both sides of the mixing chamber, the sealing plate, and the pressing plate.
[0011] With the above technical solution, the mixing chamber, sealing plate and pressing plate can be moved on the outside of the two slide rods by pushing and pulling the handles, so that the device can be easily disassembled and assembled, thereby facilitating the removal of materials and subsequent maintenance, and optimizing the operation convenience and maintenance efficiency of the equipment.
[0012] Preferably, sealing grooves are provided on both sides of the mixing chamber, and sealing gaskets are provided on the left side of the baffle and the right side of the sealing plate, with the two sealing gaskets installed inside the two sealing grooves respectively.
[0013] With the above technical solution, when the sealing plate, the mixing chamber and the baffle are in contact with each other, the two sealing gaskets can be installed inside the two sealing grooves. The sealing grooves and sealing gaskets can not only effectively prevent material leakage, dust overflow or external impurities from entering, but also maintain the pressure and temperature stability in the mixing chamber, ensuring the normal operation of the whole device.
[0014] Preferably, there are two annular fluid channels, and the rear side of the mixing chamber is fixedly connected with an inlet pipe and an outlet pipe.
[0015] The above technical solution connects the inlet pipe to external water pumps and other equipment, and the outlet pipe to collection or circulation equipment. The water pump can transport high-temperature or low-temperature fluids to the interior of the annular fluid tank, thereby heating or cooling the materials inside the mixing chamber. This not only ensures uniform heating and cooling but also guarantees the stability of the mixing process and the properties of the materials.
[0016] Preferably, there are four of each of the support, the threaded rod, the clamping block, and the nut, and the four nuts are respectively threaded onto the outer surface of the four threaded rods.
[0017] With the above technical solution, after installing the mixing chamber, sealing plate and pressing plate in sequence, the pressing block is installed on the outer side of the threaded rod. Then, the pressing block and pressing plate are pressed and fixed by threaded installation of nuts. This not only improves the overall sealing performance of the device, but also enhances the shearing, squeezing and kneading effect of the material during the mixing process, thereby improving the mixing quality and production efficiency.
[0018] Preferably, a cylinder is fixedly installed at the top of the bracket, and a sealing cover is fixedly connected to the output shaft of the cylinder, and the sealing cover is installed inside the feed inlet.
[0019] The above technical solution allows materials to be fed into the mixing chamber through the feed inlet. Then, the cylinder is activated, and the output shaft of the cylinder can drive the sealing cover to move downward, thereby sealing the feed inlet. This not only effectively prevents material from overflowing and isolates external impurities, but also maintains stable pressure and temperature inside the mixing chamber, ensuring accurate process parameters and improving production efficiency.
[0020] Compared with the prior art, this utility model provides a mixing machine for producing foamed materials, which has the following beneficial effects:
[0021] 1. This utility model allows the mixing chamber, sealing plate, and pressing plate to move independently on the outside of two sliding rods via push-pull handles. When the sealing plate, mixing chamber, and baffle are in contact with each other, two sealing gaskets can be installed inside the two sealing grooves. The sealing grooves and sealing gaskets can not only effectively prevent material leakage, dust overflow, or intrusion of external impurities, but also maintain the pressure and temperature stability inside the mixing chamber, ensuring the normal operation of the entire device. Then, the pressing block is installed on the outer surface of the threaded rod, and then the threaded nut is installed to press and fix the pressing block and pressing plate and other parts. This not only improves the overall sealing performance of the device, but also enhances the shearing, squeezing, and kneading effect of the material during the mixing process.
[0022] 2. This utility model feeds material into the mixing chamber through the inlet, then activates the cylinder. The cylinder's output shaft moves the sealing cover downwards, sealing the inlet and effectively preventing material spillage and isolating external impurities. It also maintains stable pressure and temperature within the mixing chamber. Activating the drive motor causes one of the rotating shafts and gears to rotate. This gear then meshes with another gear and rotating shaft, allowing all four shearing rotors to rotate synchronously within the mixing chamber. This enhances friction and shearing of the material, improving the overall mixing efficiency. Connecting the inlet pipe to an external pump and the outlet pipe to a collection or circulation system allows the pump to deliver high-temperature or low-temperature fluid to the annular fluid tank, heating or cooling the material inside the mixing chamber. This ensures uniform heating and cooling while maintaining the stability of the mixing process and the properties of the material. Attached Figure Description
[0023] Figure 1 This is a three-dimensional structural schematic diagram of the present utility model;
[0024] Figure 2 This is a three-dimensional exploded view of the clamping plate and other parts of the present invention.
[0025] Figure 3 This is a three-dimensional cross-sectional view of the structural work box and other parts of this utility model;
[0026] Figure 4 This is a three-dimensional cross-sectional schematic diagram of the mixing chamber and other parts of the present invention.
[0027] The components are as follows: 1. Processing table; 2. Base; 3. Baffle; 4. Work box; 5. Support; 6. Drive motor; 7. Rotary shaft; 8. Gear; 9. Shearing rotor; 10. Slide rod; 11. Mixing chamber; 12. Sealing plate; 13. Pressing plate; 14. Feed inlet; 15. Annular fluid groove; 16. Support; 17. Threaded rod; 18. Pressing block; 19. Nut; 20. Handle; 21. Sealing groove; 22. Sealing gasket; 23. Water inlet pipe; 24. Water outlet pipe; 25. Cylinder; 26. Sealing cover. Detailed Implementation
[0028] 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.
[0029] Please see Figure 1-4 A mixing mill for producing foamed materials includes a processing table 1. A base 2, a baffle 3, a working box 4, and a support 5 are fixedly installed on the top surface of the processing table 1. A drive motor 6 is fixedly installed on the right side of the working box 4. A rotating shaft 7 is installed inside the working box 4. A gear 8 and a shearing rotor 9 are fixedly installed on the outer side of the rotating shaft 7. A slide rod 10 is fixedly installed on the right side of the base 2. A mixing chamber 11, a sealing plate 12, and a pressing plate 13 are slidably installed on the outer side of the slide rod 10. A feed inlet 14 is installed on the top surface of the mixing chamber 11. An annular fluid groove 15 is opened inside the mixing chamber 11. A support 16 is fixedly installed on the outer side of the baffle 3. A threaded rod 17 is fixedly installed on the left side of the support 16. A pressing block 18 and a nut 19 are installed on the outer side of the threaded rod 17.
[0030] Specifically, there are two rotating shafts 7 and two gears 8, and four shearing rotors 9. The output shaft of the drive motor 6 is fixedly connected to the right end of one of the rotating shafts 7, and the two gears 8 are meshed together. The advantage is that, with this structure, when the drive motor 6 is started, the output shaft of the drive motor 6 can drive one of the rotating shafts 7 and gears 8 to rotate. This gear 8 can then mesh and drive another gear 8 and rotating shaft 7 to rotate together. Therefore, the four shearing rotors 9 can rotate synchronously inside the mixing chamber 11, effectively enhancing the friction and shearing of the material and improving the overall mixing efficiency of the device.
[0031] Specifically, there are two bases 2 and two slide bars 10, and handles 20 are installed on both sides of the mixing chamber 11, the sealing plate 12, and the pressing plate 13. The advantage is that by pushing or pulling the handles 20, the mixing chamber 11, the sealing plate 12, and the pressing plate 13 can be moved on the outside of the two slide bars 10 respectively. Therefore, the device can be easily disassembled and assembled, which facilitates the removal of materials and subsequent maintenance, and optimizes the ease of operation and maintenance efficiency of the equipment.
[0032] Specifically, sealing grooves 21 are provided on both sides of the mixing chamber 11, and sealing gaskets 22 are provided on the left side of the baffle 3 and the right side of the sealing plate 12. The two sealing gaskets 22 are installed inside the two sealing grooves 21 respectively. The advantage is that, with this structure, when the sealing plate 12, the mixing chamber 11 and the baffle 3 are in contact with each other, the two sealing gaskets 22 can be installed inside the two sealing grooves 21 respectively. The sealing grooves 21 and sealing gaskets 22 can not only effectively prevent material leakage, dust overflow or intrusion of external impurities, but also maintain the pressure and temperature stability inside the mixing chamber 11, ensuring the normal operation of the entire device.
[0033] Specifically, two annular fluid tanks 15 are provided, and an inlet pipe 23 and an outlet pipe 24 are fixedly connected to the rear side of the mixing chamber 11. The advantage is that this structure allows the inlet pipe 23 to be connected to external equipment such as a water pump, and the outlet pipe 24 to be connected to a collection or circulation device. The water pump can deliver high-temperature or low-temperature fluids to the interior of the annular fluid tanks 15, thereby heating or cooling the materials inside the mixing chamber 11. This not only ensures uniform heating and cooling but also guarantees the stability of the mixing process and the properties of the materials.
[0034] Specifically, four supports 16, four threaded rods 17, four clamping blocks 18, and four nuts 19 are provided, with each nut 19 threadedly connected to the outer surface of one of the four threaded rods 17. The advantage is that, with this structure, after sequentially installing the mixing chamber 11, the sealing plate 12, and the clamping plate 13, the clamping block 18 is installed on the outer surface of the threaded rod 17, and then the nuts 19 are threaded in to clamp and fix the clamping block 18 and the clamping plate 13. This not only improves the overall sealing performance of the device but also enhances the shearing, squeezing, and kneading effects of the material during the mixing process, thereby improving the mixing quality and production efficiency.
[0035] Specifically, a cylinder 25 is fixedly installed at the top of the support 5, and a sealing cover 26 is fixedly connected to the output shaft of the cylinder 25. The sealing cover 26 is installed inside the feed inlet 14. The advantage is that this structure allows material to be fed from the feed inlet 14 into the mixing chamber 11. Then, the cylinder 25 is activated, and its output shaft moves the sealing cover 26 downwards, thereby sealing the feed inlet 14. This not only effectively prevents material overflow and isolates external impurities, but also maintains stable pressure and temperature inside the mixing chamber 11, ensuring accurate process parameters and improving production efficiency.
[0036] In use, the mixing chamber 11, sealing plate 12, and pressing plate 13 can be moved on the outside of the two sliding rods 10 by pushing and pulling the handle 20. When the sealing plate 12, mixing chamber 11, and baffle 3 are in contact with each other, the two sealing gaskets 22 can be installed inside the two sealing grooves 21. The sealing grooves 21 and sealing gaskets 22 can not only effectively prevent material leakage, dust overflow, or intrusion of external impurities, but also maintain the pressure and temperature stability inside the mixing chamber 11, ensuring the normal operation of the entire device. Then, the pressing block 18 is installed on the outer surface of the threaded rod 17, and then the threaded nut 19 can be used to press and fix the pressing block 18 and pressing plate 13, which not only improves the overall sealing performance of the device, but also enhances the shearing, squeezing and kneading effect of the material during the mixing process. By feeding the material into the mixing chamber 11 from the feed inlet 14, the cylinder 25 is started, and the output shaft of the cylinder 25... The sealing cover 26 can be moved downwards to seal the feed inlet 14, effectively preventing material overflow and isolating external impurities, while also maintaining stable pressure and temperature inside the mixing chamber 11. By starting the drive motor 6, the output shaft of the drive motor 6 can drive one of the rotating shafts 7 and gear 8 to rotate. This gear 8 can then mesh with another gear 8 and rotating shaft 7 to rotate together. Therefore, the four shearing rotors 9 can rotate synchronously inside the mixing chamber 11, effectively enhancing the friction and shearing of the material and improving the overall mixing efficiency of the device. By connecting the water inlet pipe 23 to external water pumps and other equipment, and the water outlet pipe 24 to collection or circulation equipment, the water pump can deliver high-temperature or low-temperature fluid to the interior of the annular fluid tank 15, thereby heating or cooling the material inside the mixing chamber 11. This not only ensures uniform heating and cooling but also guarantees the stability of the mixing process and the material properties.
[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A mixing mill for producing foamed materials, comprising a processing table (1), characterized in that: The processing table (1) is fixedly mounted with a base (2), a baffle (3), a work box (4) and a bracket (5). The right side of the work box (4) is fixedly mounted with a drive motor (6). The inside of the work box (4) is mounted with a rotating shaft (7). The outer side of the rotating shaft (7) is fixedly mounted with a gear (8) and a shearing rotor (9). The right side of the base (2) is fixedly mounted with a slide rod (10). The outer side of the slide rod (10) is slidably mounted with a mixing chamber (11), a sealing plate (12) and a pressing plate (13). The top surface of the mixing chamber (11) is mounted with a feed inlet (14). The inside of the mixing chamber (11) is provided with an annular fluid groove (15). The outer side of the baffle (3) is fixedly mounted with a support (16). The left side of the support (16) is fixedly mounted with a threaded rod (17). The outer side of the threaded rod (17) is mounted with a pressing block (18) and a nut (19).
2. The internal mixer for producing foamed materials according to claim 1, characterized in that: The number of the rotating shaft (7) and the gear (8) are both two, the number of the shearing rotor (9) is four, and the output shaft of the drive motor (6) is fixedly connected to the right end of one of the rotating shafts (7), and the two gears (8) are meshed with each other.
3. The internal mixer for producing foamed materials according to claim 1, characterized in that: The base (2) and the slide bar (10) are each provided in twos, and handles (20) are installed on both sides of the mixing chamber (11), the sealing plate (12) and the pressing plate (13).
4. The internal mixer for producing foamed materials according to claim 1, characterized in that: Both sides of the mixing chamber (11) are provided with sealing grooves (21), and the left side of the baffle (3) and the right side of the sealing plate (12) are provided with sealing gaskets (22). The two sealing gaskets (22) are installed inside the two sealing grooves (21).
5. The internal mixer for producing foamed materials according to claim 1, characterized in that: The number of the annular fluid tanks (15) is two, and the rear side of the mixing chamber (11) is fixedly connected with a water inlet pipe (23) and a water outlet pipe (24).
6. The internal mixer for producing foamed materials according to claim 1, characterized in that: The number of the support (16), the threaded rod (17), the clamping block (18) and the nut (19) are all four, and the four nuts (19) are respectively threaded to the outer surface of the four threaded rods (17).
7. The internal mixer for producing foamed materials according to claim 1, characterized in that: A cylinder (25) is fixedly installed at the top of the bracket (5), and a sealing cover (26) is fixedly connected to the output shaft of the cylinder (25), and the sealing cover (26) is installed inside the feed inlet (14).