A screw stirring paddle structure for dynamic mixing of regenerated rubber resistant to oxidation

Abstract

The utility model discloses a kind of spiral stirring paddle structures of regenerative rubber oxidation-resistant dynamic mixing, including fixing frame, obliquely arranged main shaft, paddle, lifting cylinder and stirring motor;Lifting cylinder is rotatably installed on the upper end of main shaft, and stirring motor is built-in, connected with the top end of main shaft by first universal joint, and paddle is rotated and stirred in two directions by motor power through multi-stage gear transmission;Paddle can be lifted below fixing frame by hydraulic cylinder, and lifting is stable by guide cylinder and guide rod;The structure is mixed more evenly by oblique main shaft and special paddle design;Multi-stage gear transmission is matched with motor speed control, and the demand of different mixing stages is satisfied;Paddle lifting design operation is flexible;Universal joint and stable support prolong the service life of equipment;Overall improve stirring effect and equipment performance, reduce raw material waste and pollutant generation, reduce environmental protection cost, enhance enterprise market competitiveness.

Description

Technical Field

[0001] This utility model relates to the field of spiral mixing technology, and in particular to a spiral mixing structure for dynamic mixing of reclaimed rubber with oxidation resistance. Background Technology

[0002] The recycled rubber industry occupies an important position in the field of resource recycling. Through the reprocessing of waste rubber, it not only achieves efficient recycling of resources and alleviates the supply pressure of rubber raw materials, but also reduces the environmental impact of rubber product production. In the production process of recycled rubber, the mixing process is crucial, as it directly affects the quality and performance of the product. As the core component of the mixing equipment, the rationality of the structural design of the spiral agitator plays a decisive role in the mixing effect. From the perspective of the overall development of the industry, as the market's requirements for the quality and performance of recycled rubber continue to increase, the traditional spiral agitator structure is gradually revealing some limitations.

[0003] Regarding the uniformity of mixing, conventional mixing paddles are difficult to fully and uniformly mix rubber with various additives during the mixing process. Due to the significant differences in physical and chemical properties of the raw materials used in the production of reclaimed rubber, such as waste tire rubber powder, bio-oil, calcium powder, and activators, the single mixing mode of traditional mixing paddles cannot meet the complex requirements of different raw materials during the mixing process. This results in unstable rubber quality and large fluctuations in performance indicators after mixing, making it difficult to meet the production requirements of high-end rubber products. In view of this, this paper proposes a spiral mixing paddle structure for the dynamic mixing of reclaimed rubber with oxidation resistance. Utility Model Content

[0004] The purpose of this invention is to solve the problem that the single stirring mode of traditional stirring paddles in the prior art cannot meet the complex requirements of different raw materials in the mixing process, and to propose a spiral stirring paddle structure for dynamic mixing of reclaimed rubber with oxidation resistance.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A spiral mixing paddle structure for dynamic mixing of reclaimed rubber with oxidation resistance includes a main shaft and blades. The blades are coaxially fixedly installed at the end of the main shaft. The main shaft is inclined. A lifting cylinder is rotatably installed at the upper end of the main shaft. A stirring motor is fixedly installed inside the lifting cylinder. A first universal joint is connected between the output end of the rotor of the stirring motor and the top end of the main shaft.

[0007] A first gear is fixedly connected between the output end of the rotor and the first universal joint in the stirring motor. A second gear is meshed with one side of the first gear. A third gear is connected below the second gear. A fourth gear is meshed with one side of the third gear. The first gear, second gear, third gear, and fourth gear are all rotatably connected to the lifting cylinder.

[0008] Preferably, a bearing is fixedly installed at the upper end of the main shaft, and the bearing is tilted and rotatably installed in the fourth gear and the turntable. The turntable is located below the fourth gear and is rotatably connected to the lifting cylinder.

[0009] Preferably, a fixed frame is provided above the lifting cylinder, and a hydraulic cylinder is vertically connected between the lifting cylinder and the fixed frame. The lifting cylinder is installed below the fixed frame by the hydraulic cylinder.

[0010] Preferably, two guide cylinders are fixedly installed below the fixed frame, and each guide cylinder is telescopically connected with a guide rod, the lower end of which is fixedly connected to the lifting cylinder.

[0011] Preferably, a turntable is fixedly connected below the fourth gear, and the turntable is rotatably mounted on the lower bottom surface of the lifting cylinder.

[0012] Preferably, a second universal joint is connected between the second gear and the third gear.

[0013] Compared with the prior art, this utility model provides a spiral stirring paddle structure for dynamic mixing of recycled rubber with oxidation resistance, which has the following beneficial effects:

[0014] 1. The spiral stirring paddle structure for dynamic mixing of recycled rubber with oxidation resistance, through the inclined main shaft and specially designed blades, enables the material to form a complex flow trajectory during mixing, reducing material accumulation on the tank wall and bottom, and greatly improving the mixing uniformity; the multi-stage gear transmission system, combined with motor speed control, can flexibly adjust the blade speed and direction at different stages of mixing to meet different mixing and reaction requirements of the material, promote the full integration of additives and rubber, and improve the quality of recycled rubber.

[0015] 2. The spiral stirring paddle structure for the dynamic mixing of recycled rubber with oxidation resistance is raised and lowered by a hydraulic cylinder, which makes it easy to adjust the stirring height according to the amount of material and the reaction stage, making the operation more flexible. The cooperation of the guide cylinder and guide rod ensures a smooth lifting process and enhances the stability of the equipment.

[0016] 3. The spiral mixing impeller structure for dynamic mixing of recycled rubber with oxidation resistance effectively buffers vibration and displacement deviation between the motor and the main shaft through the first universal joint, protecting both the motor and the main shaft. The rational transmission structure and stable support design reduce wear on various components and extend the overall service life of the equipment.

[0017] 4. The spiral mixing paddle structure for dynamic mixing of recycled rubber with oxidation resistance provides excellent mixing effect, reduces raw material waste, lowers pollutant generation, reduces the load on waste gas treatment equipment, lowers environmental protection costs, meets the environmental protection requirements for recycled rubber production, and enhances the company's economic benefits and market competitiveness. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the spiral stirring paddle structure for dynamic mixing of reclaimed rubber against oxidation, as proposed in this utility model.

[0019] Figure 2 This is a partial structural diagram of the spiral stirring paddle structure for dynamic mixing of reclaimed rubber against oxidation, as proposed in this utility model.

[0020] Figure 3 This is a schematic diagram of the stirring motor and its connection structure in the spiral stirring impeller structure for dynamic mixing of reclaimed rubber against oxidation proposed in this utility model.

[0021] Figure 4 This utility model Figure 3 A magnified view of circle a in the middle.

[0022] In the diagram: 1. Fixed frame; 2. Main shaft; 3. Paddle; 4. Lifting cylinder; 5. Hydraulic cylinder; 6. Agitator motor; 7. First universal joint; 8. First gear; 9. Second gear; 10. Second universal joint; 11. Third gear; 12. Fourth gear; 13. Turntable; 14. Bearing; 15. Guide cylinder; 16. Guide rod. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] Reference Figures 1-4A spiral mixing paddle structure for dynamic mixing of reclaimed rubber with oxidation resistance includes a fixed frame 1, a main shaft 2, paddles 3, a lifting cylinder 4, and a mixing motor 6. The paddles 3 are coaxially and securely installed at the end of the main shaft 2, and the main shaft 2 is inclined. This inclined design helps to form a more complex flow trajectory of materials during the mixing process, enhancing the mixing effect. Compared with traditional vertically set mixing paddles, it can reduce the accumulation of materials on the tank wall and bottom, and improve the mixing uniformity.

[0026] refer to Figure 4 A stirring motor 6 is fixedly installed inside the lifting cylinder 4. The rotor output end of the stirring motor 6 is connected to the top of the main shaft 2 through the first universal joint 7. This design makes the power transmission of the stirring motor 6 more flexible, effectively buffers the vibration and displacement deviation between the stirring motor 6 and the main shaft 2, protects the stirring motor 6 and the main shaft 2, and extends the service life of the equipment.

[0027] refer to Figure 4 A first gear 8 is connected between the rotor output end of the stirring motor 6 and the first universal joint 7. The first gear 8 meshes with the second gear 9. The second gear 9 is connected to the third gear 11 via the second universal joint 10. The third gear 11 meshes with the fourth gear 12. The first gear 8, the second gear 9, the third gear 11 and the fourth gear 12 are all rotatably connected to the lifting cylinder 4. This multi-stage gear transmission structure can realize flexible adjustment of the stirring paddle speed and direction.

[0028] It should be noted that, at different stages of the recycled rubber compounding process, the speed of the stirring motor 6 and the gear transmission ratio can be controlled according to the process requirements to make the blades 3 rotate in two directions to meet the mixing and reaction needs of different materials. For example, in the early stage of compounding, the blades 3 can be made to stir at a lower speed and a higher torque to promote the initial uniform mixing of materials. In the later stage of compounding, the speed can be increased to enhance the shearing action and make the additives and rubber more fully integrated.

[0029] refer to Figure 1 A hydraulic cylinder 5 is vertically installed between the lifting cylinder 4 and the fixed frame 1. Through the extension and retraction of the hydraulic cylinder 5, the lifting cylinder 4 can move up and down below the fixed frame 1. This design effectively solves the problem of the laboriousness of traditional stirring paddles when fully inserted into the mixing at one time. At the same time, the height of the stirring paddle can be flexibly adjusted according to the amount of material and the reaction stage. At the beginning of the feeding stage, the stirring paddle is raised to facilitate the feeding of materials. As the materials are gradually mixed, the height of the stirring paddle is lowered to ensure that it can fully act on the materials. Two guide cylinders 15 are also set below the fixed frame 1. The guide cylinders 15 are telescopically connected to the guide rods 16. The lower end of the guide rods 16 is fixed to the lifting cylinder 4. The cooperation of the guide cylinders 15 and the guide rods 16 provides a stable guiding effect for the lifting movement of the lifting cylinder 4, ensuring the stability of the stirring paddle during the lifting process, avoiding shaking or deviation, and ensuring the consistency of the mixing effect.

[0030] refer to Figure 4 A bearing 14 is installed on the upper end of the main shaft 2. The bearing 14 is installed at an angle inside the fourth gear 12 and the turntable 13. This installation method ensures the rotational flexibility of the main shaft 2 and enhances its stability in the tilted state. The turntable 13 is connected below the fourth gear 12. The turntable 13 is rotatably mounted on the lower surface of the lifting cylinder 4, which further optimizes the stability and coordination of the entire transmission system.

[0031] In this utility model, the installation and debugging of the spiral stirring paddle structure for dynamic mixing of recycled rubber against oxidation are as follows:

[0032] When installing the spiral agitator structure, first, the fixing frame 1 is securely installed in a suitable position on the recycled rubber production equipment to ensure it can withstand various forces during the agitation process. Then, the guide cylinder 15 is fixed below the fixing frame 1, and the guide rod 16 is accurately inserted into the guide cylinder 15 to ensure smooth extension and retraction of the guide rod 16. Next, the lifting cylinder 4 is installed and fixedly connected to the lower end of the guide rod 16, ensuring the perpendicularity between the lifting cylinder 4 and the fixing frame 1. The agitator motor 6 is installed inside the lifting cylinder 4, and the first universal joint 7, the first gear 8, and other transmission components are connected. Attention is paid to the meshing accuracy between the gears to ensure smooth transmission. The main shaft 2 is installed, and the bearing 14 at its upper end is installed in the fourth gear 12 and the turntable 13. The blade 3 is installed at the lower end. Finally, the hydraulic cylinder 5 is connected to ensure it can normally drive the lifting cylinder 4 to move the agitator up and down. After installation, a comprehensive test is conducted to check whether the connections of each component are firm, whether the operation of the agitator motor 6 is normal, whether the gear transmission is smooth, and whether the lifting and lowering of the blade 3 is stable.

[0033] The production application of this reclaimed rubber oxidation-resistant dynamic mixing spiral impeller structure:

[0034] During desulfurization operations in the dynamic desulfurization tank, the mixing paddle is first raised to a suitable height using hydraulic cylinder 5 according to the input amounts of raw materials such as waste tire rubber powder, bio-oil, calcium powder, and 480 activator, facilitating material feeding. After feeding, the mixing motor 6 is started. The mixing motor 6 drives the main shaft 2 and paddle 3 to rotate via the first universal joint 7. The speed of the mixing motor 6 is adjusted according to different stages of the desulfurization process. The speed and direction of the paddle 3 are changed through a multi-stage gear transmission system. In the initial stage of desulfurization, a lower speed and higher torque are used for mixing to ensure initial uniformity of the materials. As the reaction progresses... During the mixing process, the rotation speed is appropriately increased to enhance the shear force and promote a more complete desulfurization reaction of the rubber. The height of the mixing paddle can be adjusted in a timely manner via hydraulic cylinder 5 according to the reaction of the materials, ensuring that it always effectively acts on the materials. Similarly, in the rubber mixing process, the rotation speed, direction, and height of the mixing paddle are flexibly adjusted according to the mixing process requirements to ensure that the additives and rubber are fully integrated, thereby improving the physical properties of the reclaimed rubber, such as tensile strength and elongation at break, to meet the quality standards of the "General Specification for Reclaimed Rubber" (GB / T13460-2016).

[0035] 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 spiral mixing paddle structure for dynamic mixing of reclaimed rubber with oxidation resistance, comprising a main shaft (2) and blades (3), wherein the blades (3) are coaxially fixedly installed at the end of the main shaft (2), characterized in that, The main shaft (2) is inclined, and a lifting cylinder (4) is rotatably installed on the upper end of the main shaft (2). A stirring motor (6) is fixedly installed inside the lifting cylinder (4). A first universal joint (7) is connected between the output end of the rotor of the stirring motor (6) and the top end of the main shaft (2). A first gear (8) is fixedly connected between the output end of the rotor of the stirring motor (6) and the first universal joint (7). A second gear (9) is meshed with one side of the first gear (8). A third gear (11) is connected below the second gear (9). A fourth gear (12) is meshed with one side of the third gear (11). The first gear (8), the second gear (9), the third gear (11), and the fourth gear (12) are all rotatably connected to the lifting cylinder (4).

2. The spiral stirring paddle structure for dynamic mixing of reclaimed rubber against oxidation as described in claim 1, characterized in that, The upper end of the main shaft (2) is fixedly installed with a bearing (14), which is tilted and rotated inside the fourth gear (12) and the turntable (13). The turntable (13) is located below the fourth gear (12) and is rotatably connected to the lifting cylinder (4).

3. The spiral stirring paddle structure for dynamic mixing of reclaimed rubber against oxidation as described in claim 1, characterized in that, A fixed frame (1) is provided above the lifting cylinder (4), and a hydraulic cylinder (5) is vertically connected between the lifting cylinder (4) and the fixed frame (1). The lifting cylinder (4) is lifted and installed below the fixed frame (1) by the hydraulic cylinder (5).

4. The spiral stirring paddle structure for dynamic mixing of reclaimed rubber against oxidation as described in claim 3, characterized in that, Two guide cylinders (15) are fixedly installed below the fixed frame (1). Each guide cylinder (15) is connected to a guide rod (16) that can be telescopically extended. The lower end of the guide rod (16) is fixedly connected to the lifting cylinder (4).

5. The spiral stirring paddle structure for dynamic mixing of reclaimed rubber against oxidation as described in claim 1, characterized in that, A turntable (13) is fixedly connected below the fourth gear (12), and the turntable (13) is rotatably mounted on the bottom surface of the lifting cylinder (4).

6. The spiral stirring paddle structure for dynamic mixing of reclaimed rubber against oxidation as described in claim 1, characterized in that, A second universal joint (10) is connected between the second gear (9) and the third gear (11).

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