Rubber manufacturing internal mixer
Patent Information
- Application Number
- CN202522241540.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-23
- Publication Date
- 2026-09-15
- Estimated Expiration
- 2035-10-23
AI Technical Summary
[0003]现有的密炼机的供料结构为设置斜向的供料通道经过上压栓下压的通道送入密闭混合仓内，由于加工原料的存放等外部因素造成原料结块，存在在供料通道内堆积堵塞的情况发生，需要人工进行清理，使用不便，此外当供料结构发生故障需要维护时，需要进行停机维护，拆卸不便，降低了工作效率
1、本实用新型中，通过在加压仓的顶部延长设置有上连接板，密闭混合仓的两侧水平焊接有支撑翼板，支撑翼板与上连接板之间通过螺栓连接有连接杆，对加压仓进行支撑固定，当进料仓需要进行拆除维护时，直接拆除进料仓与密闭混合仓和进料仓的螺栓连接，不需要拆除加压仓，便于维护，当进料仓因维修拆除后，提升上压栓之后直接向密闭混合仓内加注原料，作为临时措施进行持续生产，保证工作效率。
Smart Images
Figure CN224751632U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of internal mixers, specifically a mixing mechanism for rubber manufacturing. Background Technology
[0002] An internal mixer, short for a closed-loop rubber mixing mill, is primarily used for the plasticizing and mixing of rubber. It is a high-intensity, intermittent mixing device developed from the open mill. An internal mixer is a machine equipped with a pair of rotors of specific shapes that rotate relative to each other, intermittently plasticizing and mixing polymer materials under adjustable temperature and pressure in a closed environment. The advent of the internal mixer was a significant achievement in rubber machinery, and it remains a typical and important piece of equipment for plasticizing and mixing, continuing to be developed and improved.
[0003] Existing internal mixers use an inclined feeding channel that delivers material into a closed mixing chamber via an upper pressure bolt and a lower pressure channel. However, due to external factors such as raw material storage, material agglomeration can occur, leading to blockages in the feeding channel. This requires manual cleaning, which is inconvenient. Furthermore, when the feeding structure malfunctions and requires maintenance, the machine must be shut down, which is inconvenient and reduces work efficiency. Therefore, those skilled in the art have provided a mixing mechanism for rubber manufacturing to solve the problems mentioned in the background. Utility Model Content
[0004] The purpose of this invention is to provide a mixing mechanism for rubber manufacturing to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: A rubber manufacturing internal mixing mechanism includes a closed mixing chamber, a feeding chamber, a pressure chamber, and a discharging chamber. A pair of rhomboid rotors are symmetrically arranged inside the closed mixing chamber. The edges of the rhomboid rotors are helical ridges, and the two rhomboid rotors rotate in opposite directions. A feeding chamber is bolted to the top of the closed mixing chamber. A screw feeder is bolted horizontally to one side of the feeding chamber. A pressure chamber is bolted to the top of the feeding chamber. A first hydraulic cylinder is bolted to the top of the pressure chamber. An upper pressure bolt is fixedly connected to the output end of the first hydraulic cylinder, and the upper pressure bolt slides against the feeding inlet of the closed mixing chamber. The pressurized chamber is connected by an upper connecting plate extending from its top. Supporting wing plates are horizontally welded to both sides of the sealed mixing chamber. A connecting rod is bolted between the supporting wing plates and the upper connecting plate. A discharge chamber is bolted to the bottom of the sealed mixing chamber. A base is welded below the discharge chamber. A discharge channel is welded diagonally downwards to one side of the discharge chamber. The middle of the discharge channel is bolted to the base. A second hydraulic cylinder is bolted to the bottom center of the base. A lower top bolt is fixedly connected to the output end of the second hydraulic cylinder. The apexes of both the upper and lower top bolts are triangular.
[0006] As a further embodiment of this utility model: a telescopic chamber is welded to the other side of the discharge chamber, and a discharge guide bolt is slidably connected inside the telescopic chamber. The top of the discharge guide bolt and the top of the lower top bolt can be combined to form an inclined surface, and the inclined surface coincides with the bottom of the discharge channel. A telescopic rod is threadedly connected to the tail of the discharge guide bolt. The telescopic rod is slidably connected to the telescopic chamber. A spring is provided around the telescopic rod between the discharge guide bolt and the telescopic chamber. A limit plate is welded to the tail of the telescopic rod.
[0007] As a further improvement of this utility model, guide rounded corners are provided on both sides of the bottom of the lower top bolt.
[0008] As a further improvement of this utility model, two triangular reinforcing plates are symmetrically welded between each of the supporting wing plates and the sealed mixing chamber.
[0009] As a further embodiment of this utility model: the tail end of the screw feeder is provided with an extension section, and an extension screw plate is provided on the shaft of the extension section and extends into the connecting pipe of the feed hopper. A funnel-shaped feed hopper is welded to the top of the screw feeder on the side near the motor.
[0010] As a further improvement of this utility model: the bottom of the screw feeder is provided with an inclined support frame, the bottom of the support frame is welded with an mounting plate, the mounting plate is connected to the top side of the sealed mixing chamber by bolts, and the top of the support frame is welded with an arc-shaped support plate, which fits against the bottom of the screw feeder.
[0011] As a further improvement of this utility model: arc-shaped electric heating plates are provided on the two arc-shaped sides of the sealed mixing chamber, and an arc-shaped cover plate is bolted to the outside of the heating plates.
[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. In this utility model, an upper connecting plate is extended from the top of the pressurizing chamber, and support wing plates are horizontally welded to both sides of the sealed mixing chamber. The support wing plates and the upper connecting plate are connected by bolts to a connecting rod, which supports and fixes the pressurizing chamber. When the feeding hopper needs to be dismantled for maintenance, the bolt connection between the feeding hopper and the sealed mixing chamber and the feeding hopper can be directly removed without dismantling the pressurizing chamber, which is convenient for maintenance. When the feeding hopper is dismantled for maintenance, the upper pressure bolt is lifted and raw materials are directly added to the sealed mixing chamber as a temporary measure to continue production and ensure work efficiency.
[0013] 2. In this utility model, a telescopic chamber is welded to the other side of the discharge chamber. A discharge guide bolt is slidably connected inside the telescopic chamber. The tail of the discharge guide bolt is connected to a telescopic rod by a thread. A spring is arranged around the telescopic rod between the discharge guide bolt and the telescopic chamber. When discharging, the lower top bolt moves down to the bottom of the discharge chamber under the action of the second hydraulic cylinder. During this process, the guide rounded corner of the lower top bolt fits against the top of the discharge guide bolt, pushing the discharge guide bolt into the telescopic chamber. When the lower top bolt moves to the bottom of the discharge chamber, the discharge guide bolt resets again under the action of the spring. The top of the discharge guide bolt and the top of the lower top bolt can be combined to form an inclined surface, and the inclined surface coincides with the bottom of the discharge channel, which facilitates the feeding of the material discharged from the sealed mixing chamber into the discharge channel and avoids accumulation. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a top view of the structure of this utility model; Figure 3 This is a structural schematic diagram of cross-section AA in this utility model; Figure 4 This is a cross-sectional schematic diagram of the discharge hopper during material discharge in this utility model; Figure 5 This is a schematic diagram of the support frame in this utility model.
[0015] In the diagram: 1. Sealed mixing chamber; 2. Feeding hopper; 3. Screw feeder; 4. Pressure chamber; 5. Discharge hopper; 6. Base; 7. Discharge channel; 8. First hydraulic cylinder; 9. Upper connecting plate; 10. Support wing plate; 11. Connecting rod; 12. Reinforcing plate; 13. Telescopic chamber; 14. Feed hopper; 15. Extended spiral plate; 16. Upper pressure bolt; 17. Rhomboid rotor; 18. Electric heating plate; 19. Cover plate; 20. Lower top bolt; 21. Second hydraulic cylinder; 22. Guide rounded corner; 23. Discharge guide bolt; 24. Telescopic rod; 25. Limiting plate; 26. Spring; 27. Support frame; 28. Support plate; 29. Mounting plate. Detailed Implementation
[0016] 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.
[0017] Please see Figures 1-5 In this embodiment of the invention, a rubber manufacturing internal mixing mechanism includes a sealed mixing chamber 1, a feeding chamber 2, a pressure chamber 4, and a discharging chamber 5. A pair of rhomboid rotors 17 are symmetrically arranged inside the sealed mixing chamber 1. The edges of the rhomboid rotors 17 are helical ridges, allowing the raw material to move axially along the rhomboid rotors 17 within the sealed mixing chamber 1. The two rhomboid rotors 17 rotate in opposite directions. The top of the sealed mixing chamber 1 is bolted to the feeding chamber 2. A screw feeder 3 is horizontally bolted to one side of the feeding chamber 2 to prevent material jamming during feeding. The top of the feeding chamber 2 is bolted to the pressure chamber 4. The top of the pressure chamber 4 is bolted to a first hydraulic cylinder 8. An upper pressure bolt 16 is fixedly connected to the output end of the first hydraulic cylinder 8. The upper pressure bolt 16 is slidably connected to the feed inlet of the sealed mixing chamber 1. The top of the 4 is extended with an upper connecting plate 9. Support wing plates 10 are horizontally welded to both sides of the sealed mixing chamber 1. The support wing plates 10 and the upper connecting plate 9 are connected by a connecting rod 11 with bolts. The feeding chamber 2 can be removed separately, which is convenient for maintenance of the feeding chamber 2. It is not necessary to remove the pressure chamber 4, which is convenient to use. The bottom of the sealed mixing chamber 1 is connected to the discharge chamber 5 with bolts. The bottom of the discharge chamber 5 is welded with a base 6. One side of the discharge chamber 5 is welded with a discharge channel 7 diagonally downward. The middle of the discharge channel 7 is fixedly connected to the base 6 with bolts. The bottom center of the base 6 is connected to the second hydraulic cylinder 21 with bolts. The output end of the second hydraulic cylinder 21 is fixedly connected to the lower top bolt 20. The top of the upper pressure bolt 16 and the lower top bolt 20 are both triangular, which increases the area of raw material processing and extrusion in the sealed mixing chamber 1 and improves processing efficiency.
[0018] Among them, a telescopic chamber 13 is welded to the other side of the discharge chamber 5. A discharge guide bolt 23 is slidably connected inside the telescopic chamber 13. The top of the discharge guide bolt 23 and the top of the bottom bolt 20 can be combined to form an inclined surface, and the inclined surface coincides with the bottom of the discharge channel 7, so that the processed raw materials can smoothly enter the discharge channel 7 along the inclined surface to prevent jamming and accumulation. The tail of the discharge guide bolt 23 is connected to a telescopic rod 24 by a thread. The telescopic rod 24 is slidably connected to the telescopic chamber 13. A spring 26 is provided around the telescopic rod 24 between the discharge guide bolt 23 and the telescopic chamber 13. A limit plate 25 is welded to the tail of the telescopic rod 24. Among them, the bottom sides of the bottom of the top bolt 20 are provided with guide rounded corners 22, which can allow the material guide bolt 23 to smoothly retract and avoid when the bottom bolt 20 descends. Among them, two triangular reinforcing plates 12 are symmetrically welded between each support wing plate 10 and the sealed mixing chamber 1 to improve the structural strength of the support wing plate 10; Among them, the screw feeder 3 has an extension section at the tail end of the rotating shaft, and an extension screw plate 15 is provided on the rotating shaft of the extension section and extends into the connecting pipe of the feeding hopper 2, which can ensure that the raw material is completely fed into the feeding hopper 2 by the screw plate and prevent accumulation. The screw feeder 3 has a funnel-shaped feeding hopper 14 welded to the top of the side near the motor. The bottom of the screw feeder 3 is provided with an inclined support frame 27 to support the screw feeder 3 and prevent the screw feeder 3 from tilting due to the weight of the raw materials. The bottom of the support frame 27 is welded with a mounting plate 29, which is connected to the top side of the sealed mixing chamber 1 by bolts for easy disassembly and installation. The top of the support frame 27 is welded with an arc-shaped support plate 28, which fits against the bottom of the screw feeder. Among them, the two arc-shaped electric heating plates 18 are provided on the two arc-shaped sides of the sealed mixing chamber 1 to provide auxiliary heating to the inside of the sealed mixing chamber 1 and improve processing efficiency. The outer side of the heating plate is connected to the arc-shaped cover plate 19 by bolts.
[0019] The working principle of this utility model is as follows: Before feeding, the second hydraulic cylinder 21 drives the lower top bolt 20 to move upward, so that the tip of the lower top bolt 20 completely enters the sealed mixing chamber 1 to seal the bottom of the sealed mixing chamber 1. During this process, the tip of the lower top bolt 20 is in contact with the tip of the feeding guide bolt 23, and the feeding guide bolt 23 is pushed into the telescopic chamber 13, and then fed into the feeding hopper 14. The raw material is fed into the feeding chamber 2 and into the sealed mixing chamber 1 through the spiral plate and the extended spiral plate 15 of the screw feeder 3. After feeding is completed, the first hydraulic cylinder 8 located at the top of the pressure chamber 4 drives the upper pressure bolt 16 to move downward, so that the tip of the upper pressure bolt 16 completely enters the sealed mixing chamber 1. During this process, the upper pressure bolt 16 presses all the raw material into the sealed mixing chamber 1 and pressurizes it. The motor power of the two rhomboid rotors 17 is started. The two rhomboid rotors 17 rotate in opposite directions. Through the shearing and squeezing of the rhomboid rotors 17 with the inner wall of the sealed mixing chamber 1 and the kneading between the two rhomboid rotors 17, the material is compressed. To achieve rapid mixing, the electric heating plates 18 located on both sides of the sealed mixing chamber 1 can seal the temperature inside the mixing chamber 1, improving processing efficiency. When the processing is completed and the material is discharged, the lower top bolt 20 moves down under the action of the second hydraulic cylinder 21. The guide rounded corner 22 at the bottom of the lower top bolt 20 fits against the top of the discharge guide bolt 23, pushing the discharge guide bolt 23 into the telescopic chamber 13. When the lower top bolt 20 moves to the bottom of the discharge chamber 5, the discharge guide bolt 23 resets again under the action of the spring 26. The top of the discharge guide bolt 23 and the top of the lower top bolt 20 can form an inclined surface, and the inclined surface coincides with the bottom of the discharge channel 7. The processed raw material is discharged from the discharge chamber 5 along the discharge channel 7, preventing accumulation and making it convenient to use. When the feeding chamber 2 needs to be maintained, the feeding chamber 2 can be quickly removed by directly removing the connecting bolts of the feeding chamber 2 without removing the upper pressure bolt 16. Material can be directly added through the upper inlet of the sealed mixing chamber 1, avoiding machine downtime and making it convenient to use.
[0020] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A rubber manufacturing internal mixing mechanism, comprising a closed mixing chamber (1), a feeding chamber (2), a pressurizing chamber (4), and a discharging chamber (5), characterized in that: The sealed mixing chamber (1) is symmetrically equipped with a pair of rhomboid rotors (17). The edges of the rhomboid rotors (17) are spiral ridges. The two rhomboid rotors (17) rotate in opposite directions. The top of the sealed mixing chamber (1) is bolted to a feeding chamber (2). A screw feeder (3) is bolted horizontally to one side of the feeding chamber (2). The top of the feeding chamber (2) is bolted to a pressure chamber (4). The top of the pressure chamber (4) is bolted to a first hydraulic cylinder (8). The output end of the first hydraulic cylinder (8) is fixedly connected to an upper pressure bolt (16). The upper pressure bolt (16) is slidably connected to the feed inlet of the sealed mixing chamber (1). The top of the pressure chamber (4) is extended to provide an upper connecting plate (…). 9) Support wing plates (10) are horizontally welded on both sides of the sealed mixing chamber (1). The support wing plates (10) and the upper connecting plate (9) are connected by a connecting rod (11) by bolts. The bottom of the sealed mixing chamber (1) is connected by bolts to a discharge chamber (5). A base (6) is welded below the discharge chamber (5). A discharge channel (7) is welded obliquely downward on one side of the discharge chamber (5). The middle part of the discharge channel (7) is fixedly connected to the base (6) by bolts. A second hydraulic cylinder (21) is bolted to the bottom center of the base (6). A lower top bolt (20) is fixedly connected to the output end of the second hydraulic cylinder (21). The top of the upper pressure bolt (16) and the lower top bolt (20) are both triangular.
2. The internal mixing mechanism for rubber manufacturing according to claim 1, characterized in that: A telescopic chamber (13) is welded to the other side of the discharge chamber (5). A discharge guide bolt (23) is slidably connected inside the telescopic chamber (13). The top of the discharge guide bolt (23) contacts the top of the lower top bolt (20) and can be combined to form an inclined surface, which coincides with the bottom of the discharge channel (7). A telescopic rod (24) is threadedly connected to the tail of the discharge guide bolt (23). The telescopic rod (24) is slidably connected to the telescopic chamber (13). A spring (26) is provided around the telescopic rod (24) between the discharge guide bolt (23) and the telescopic chamber (13). A limit plate (25) is welded to the tail of the telescopic rod (24).
3. The internal mixing mechanism for rubber manufacturing according to claim 1, characterized in that: The bottom of the lower top bolt (20) is provided with guide rounded corners (22) on both sides.
4. The internal mixing mechanism for rubber manufacturing according to claim 1, characterized in that: Each of the supporting wing plates (10) is symmetrically welded with two triangular reinforcing plates (12) between it and the sealed mixing chamber (1).
5. The internal mixing mechanism for rubber manufacturing according to claim 1, characterized in that: The screw feeder (3) has an extension section at the tail end of the shaft, and an extension screw plate (15) is provided on the shaft of the extension section and extends into the connecting pipe of the feed hopper (2). The screw feeder (3) has a funnel-shaped feed hopper (14) welded to the top of the side near the motor.
6. The internal mixing mechanism for rubber manufacturing according to claim 1, characterized in that: The bottom of the screw feeder (3) is provided with an inclined support frame (27), and the bottom of the support frame (27) is welded with an mounting plate (29). The mounting plate (29) is connected to the top side of the sealed mixing chamber (1) by bolts. The top of the support frame (27) is welded with an arc-shaped support plate (28), and the support plate (28) is in contact with the bottom of the screw feeder.
7. The internal mixing mechanism for rubber manufacturing according to claim 1, characterized in that: The sealed mixing chamber (1) is provided with arc-shaped electric heating plates (18) on the two arc-shaped sides, and an arc-shaped cover plate (19) is bolted to the outside of the heating plates.