A stirring device for plastic product production

Abstract

The utility model relates to the technical field of plastic product production technique discloses a kind of stirring device for plastic product production.The utility model includes stirring box, the accommodating cavity of stirring box is divided into heating portion and cooling portion from top to bottom, heating portion is equipped with hot pot and heating part, and the outer peripheral wall of cooling portion is surrounded with cooling pipe;Stirring box is equipped with driving element, its output end is connected with stirring blade and blade assembly through first rotating shaft, second rotating shaft, spiral conveying element is arranged between two rotating shafts;Discharge part is circular table, and bottom end is equipped with air cooling assembly, the air outlet pipe of high-pressure fan is communicated with hollow second rotating shaft, and mixing rod is provided with ventilation hole;The device realizes heating pretreatment, cooling shaping continuous processing, spiral conveying element prevents blockage, cooling pipe and air cooling assembly form multiple cooling, grading stirring improves mixing uniformity, circular table discharge part guarantees smooth discharge, effectively solve the problems, such as existing device temperature control is not continuous, mixing is uneven, discharge is not smooth, and adapt to plastic product production demand.

Description

Technical Field

[0001] This utility model relates to the field of plastic product manufacturing technology, and in particular to a stirring device for plastic product manufacturing. Background Technology

[0002] In the production of plastic products, plastic raw materials need to be stirred and mixed before entering the subsequent molding process. During the stirring process, the raw materials often need to be pre-treated by heating to promote softening or melting, and then cooled and shaped to avoid material sticking, so as to ensure the mixing quality and compatibility with subsequent processing.

[0003] Chinese patent CN114055656A discloses a stirring device for plastic product manufacturing. This device includes a fixed base, a mixing tank, and a mounting frame. It uses a dual-motor driven shaft in conjunction with a stirring mechanism, which improves the mixing effect and efficiency to some extent. However, this prior art only focuses on improving the mixing effect and efficiency, without optimizing the design for key technical requirements in plastic product manufacturing, such as the continuity of temperature control processes, smooth material conveying, cooling efficiency and uniformity, and convenient discharge. It still has significant technical deficiencies: it lacks suitable heating pretreatment and cooling control mechanisms. The continuous processing structure suffers from a broken temperature control process, making it difficult to meet the temperature control requirements for mixing plastic raw materials. The lack of a stable material conveying connection structure easily leads to material accumulation and blockage during transport after heating, affecting production continuity. The absence of an efficient cooling structure design results in limited cooling contact area, low cooling efficiency, and uneven heat dissipation, easily causing material adhesion and clumping. The simple design of the mixing components makes it difficult to achieve comprehensive mixing of materials at different processing stages, creating mixing dead zones and resulting in insufficient material uniformity. The discharge structure is not adapted to the material flow characteristics, resulting in high discharge resistance and easy accumulation of material residue, affecting smooth discharge.

[0004] In summary, existing mixing devices for plastic product manufacturing suffer from technical problems such as discontinuous temperature control processes, easy blockage of material conveying, low cooling efficiency, poor mixing uniformity, and unsmooth discharge. There is an urgent need for a mixing device that can solve these defects. Utility Model Content

[0005] The purpose of this utility model is to solve the problems existing in the prior art by proposing a stirring device for the production of plastic products.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A mixing device for producing plastic products includes a mixing tank with a feeding end at one end. The mixing tank has an axially extending cavity inside, which is divided into a heating section and a cooling section vertically from top to bottom. The heating section includes a heating hopper, the outer peripheral wall of which is fixedly connected to the upper inner wall of the cavity. A feeding port is located at the bottom of the heating hopper, and the heating section and cooling section are connected through the feeding port. Cooling pipes are uniformly and fixedly arranged circumferentially around the area of ​​the cooling section on the outer wall of the mixing tank. A stirring element is provided at one end of the mixing tank. The stirring element includes a driving element. The driving element is installed on the side of the mixing tank near the feed end. A first rotating shaft is provided at the driving end of the driving element. The first rotating shaft movably passes through the outer wall of the mixing tank and extends inward into the receiving cavity. A plurality of stirring blades are symmetrically arranged on the outer periphery of the first rotating shaft. The stirring blades are rotatably disposed in the receiving cavity. A second rotating shaft is provided at the end of the first rotating shaft away from the driving element. The second rotating shaft is rotatably disposed in the cooling section. A blade assembly is provided extending outward from the second rotating shaft. The blade assembly is integrally formed with the second rotating shaft. The mixing tank has a discharge section at the end away from the drive component. The discharge section is connected to the receiving cavity, and a discharge pipe is provided on one side of the discharge section.

[0007] Preferably, the heating element is provided inside the heating chamber.

[0008] Preferably, a spiral conveyor is coaxially fixed between the first rotating shaft and the second rotating shaft, and the spiral conveyor is rotatably disposed inside the feed inlet and is clearance-fitted with the inner wall of the feed inlet.

[0009] Preferably, the blade assembly includes a first mixing rod and a second mixing rod, which are arranged sequentially along the second rotating shaft.

[0010] Preferably, the first mixing rod is rotatably disposed within the cooling section. The first mixing rod includes a first extension rod, one end of which is connected to a second rotating shaft, and a straight rod is provided at the end of the first extension rod away from the second rotating shaft.

[0011] Preferably, the second mixing rod is rotatably disposed inside the discharge section. The second mixing rod includes a second extension rod, and an arc rod is provided at one end of the second extension rod near the inner wall of the discharge section. The angle of the arc rod is adapted to the angle of the inner wall of the discharge section.

[0012] Preferably, an air-cooling component is provided at the bottom of the discharge section.

[0013] Preferably, the air-cooling component includes a high-pressure blower, which is connected to the outer wall of the discharge section. The output end of the high-pressure blower is provided with an air outlet pipe, which penetrates the outer wall of the discharge section and extends inward into the cooling section.

[0014] Preferably, the second rotating shaft has a hollow structure, and both the first mixing rod and the second mixing rod are provided with ventilation holes. The ventilation holes are connected to the hollow cavity of the second rotating shaft. The second rotating shaft is provided with a sealed bearing at one end near the air outlet pipe. The air outlet pipe is sealed and connected to the hollow cavity of the second rotating shaft by rotation through the sealed bearing.

[0015] Preferably, the air outlet pipe has branch pipes on both sides of the portion between the high-pressure blower and the second rotating shaft, and the air outlet end of the branch pipe is opposite to the bottom of the discharge section.

[0016] Compared with the prior art, the beneficial effects of this utility model are: This invention, by dividing the receiving cavity into a heating section and a cooling section from top to bottom, enables a continuous processing flow of plastic raw materials, which involves preheating and then cooling to set the shape. This adapts to the temperature control requirements of raw material mixing in plastic product manufacturing. The heating hopper is fixedly connected to the upper inner wall of the receiving cavity to ensure heating stability. The material inlet allows for smooth communication between the heating and cooling sections, preventing material transport interruptions. The cooling pipe is evenly and closely arranged around the outer circumference of the cooling section, increasing the cooling contact area and improving cooling efficiency. The driving component drives the first and second rotating shafts to rotate synchronously, causing the stirring blades and blade assembly to stir collaboratively within the receiving cavity and cooling section, ensuring uniform material mixing and avoiding insufficient mixing in certain areas. The frustum-shaped discharge section is connected to the receiving cavity, using its structural characteristics to guide the material to converge towards the discharge pipe, reducing discharge resistance and achieving smooth discharge. Attached Figure Description

[0017] Figure 1 This is a first-view schematic diagram of the overall device of the stirring device for producing plastic products proposed in this utility model. Figure 2 This is a second-view schematic diagram of the overall device of the stirring device for producing plastic products proposed in this utility model. Figure 3 This is a schematic diagram of the internal structure of the receiving cavity of a stirring device for producing plastic products according to this utility model; Figure 4 This is a schematic diagram showing the connection between the air outlet pipe and the second rotating shaft of a stirring device for producing plastic products according to this utility model.

[0018] In the diagram: 1. Mixing tank; 2. Feeding end; 3. Receiving cavity; 4. Heating section; 5. Cooling section; 6. Hot hopper; 7. Feeding port; 8. Cooling pipe; 9. Agitator; 10. Drive component; 11. First rotating shaft; 12. Agitator blade; 13. Second rotating shaft; 14. Blade assembly; 15. Discharge section; 16. Discharge pipe; 17. Heating component; 18. Screw conveyor; 19. First mixing rod; 20. Second mixing rod; 21. First extension rod; 22. Straight rod; 23. Second extension rod; 24. Arc rod; 25. Air-cooled assembly; 26. High-pressure blower; 27. Air outlet pipe; 28. Sealed bearing; 29. ​​Ventilation hole; 30. Branch pipe. Detailed Implementation

[0019] 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.

[0020] Reference Figures 1-4 A mixing device for producing plastic products includes a mixing tank 1. One end of the mixing tank 1 is provided with a feeding end 2. The mixing tank 1 has an axially extending receiving cavity 3 inside. The receiving cavity 3 is divided into a heating section 4 and a cooling section 5 from top to bottom along the vertical direction of the mixing tank 1. The heating section 4 includes a heating hopper 6. The outer peripheral wall of the heating hopper 6 is fixedly connected to the upper inner wall of the receiving cavity 3. The bottom of the heating hopper 6 is provided with a feeding port 7. The heating section 4 and the cooling section 5 are connected through the feeding port 7. Cooling pipes 8 are uniformly fixed around the outer wall of the mixing tank 1 in the circumferential direction in the area corresponding to the cooling section 5. A stirring element 9 is provided at one end of the mixing tank 1. The stirring element 9 includes a driving element 10. The driving element 10 is installed on the side of the mixing tank 1 near the feed end 2. A first rotating shaft 11 is provided at the driving end of the driving element 10. The first rotating shaft 11 movably passes through the outer wall of the mixing tank 1 and extends inward into the receiving cavity 3. A plurality of stirring blades 12 are symmetrically arranged on the outer periphery of the first rotating shaft 11. The stirring blades 12 are rotatably disposed in the receiving cavity 3. A second rotating shaft 13 is provided at the end of the first rotating shaft 11 away from the driving element 10. The second rotating shaft 13 is rotatably disposed in the cooling part 5. A blade assembly 14 is provided extending outward from the second rotating shaft 13. The blade assembly 14 is integrally formed with the second rotating shaft 13. The mixing tank 1 has a discharge section 15 at the end away from the drive component 10. The discharge section 15 is connected to the receiving cavity 3. A discharge pipe 16 is provided on one side of the discharge section 15.

[0021] In the example of this application, by dividing the receiving cavity 3 into a heating section 4 and a cooling section 5 from top to bottom, a continuous processing flow of preheating and then cooling and shaping of plastic raw materials is realized, which is adapted to the temperature control requirements of raw material mixing in the production of plastic products; the heating bucket 6 is fixedly connected to the upper inner wall of the receiving cavity 3 to ensure heating stability; the material conveying port 7 enables smooth communication between the heating section 4 and the cooling section 5 to avoid material conveying interruption; the cooling pipe 8 is uniformly arranged around the outer peripheral wall of the cooling section 5 and fits snugly to increase the cooling contact area and improve cooling efficiency; the driving component 10 drives the first rotating shaft 11 and the second rotating shaft 13 to rotate synchronously, driving the stirring blade 12 and the blade assembly 14 to stir in the receiving cavity 3 and the cooling section 5 to ensure uniform mixing of materials and avoid insufficient mixing in some areas; the frustum-shaped discharge section 15 is connected to the receiving cavity 3 and uses its structural characteristics to guide the material to converge towards the discharge pipe 16, reducing discharge resistance and realizing smooth discharge.

[0022] In the example of this application, the heating element 6 is provided with a plurality of heating elements 17.

[0023] As a preferred example of this utility model, the heating elements 17 provided in the heating bucket 6 can directly heat the raw materials in the heating bucket 6, which increases the heating area and heating intensity, can quickly raise the temperature of the raw materials and ensure heating uniformity, and ensure that the raw materials fully reach the required physical state in the heating bucket 6, providing qualified pre-treated raw materials for the subsequent stirring process, and avoiding poor stirring effect due to insufficient or uneven heating. The heating element 17 is a mica heating element, which is existing technology and will not be described in detail here.

[0024] In the example of this application, a spiral conveyor 18 is coaxially fixedly sleeved between the first rotating shaft 11 and the second rotating shaft 13. The spiral conveyor 18 is rotatably disposed in the feed inlet 7 and is in clearance fit with the inner wall of the feed inlet 7.

[0025] As a preferred example of this utility model, the spiral conveyor 18 between the first rotating shaft 11 and the second rotating shaft 13 is rotatably disposed in the feed inlet 7 and is in clearance fit with the inner wall of the feed inlet 7. This allows the pre-treated material in the heating section 4 to be smoothly and quantitatively conveyed to the cooling section 5, preventing the material from accumulating and blocking in the feed inlet 7. This achieves the connection between the material conveying of the heating section 4 and the cooling section 5, ensuring the continuity and stability of the entire mixing and processing process. The spiral conveyor 18 is an auger, which is existing technology and will not be described in detail here.

[0026] In the example of this application, the blade assembly 14 includes a first mixing rod 19 and a second mixing rod 20, which are arranged sequentially along the second rotating shaft 13.

[0027] As a preferred example of this utility model, the first mixing rod 19 and the second mixing rod 20 are arranged sequentially along the second rotating shaft 13 to form a graded mixing structure. This structure can be used to target the material state in different areas of the cooling section 5 and the discharge section 15, and to perform targeted mixing of the material and the material to be discharged during the cooling process. This improves the overall mixing uniformity of the material, avoids mixing dead zones caused by a single mixing structure, and ensures the consistency of the mixing quality of raw materials for plastic products.

[0028] In the example of this application, the first mixing rod 19 is rotatably disposed in the cooling section 5. The first mixing rod 19 includes a first extension rod 21. One end of the first extension rod 21 is connected to the second rotating shaft 13. A straight rod 22 is provided at the end of the first extension rod 21 away from the second rotating shaft 13.

[0029] As a preferred example of this utility model, the first extension rod 21 and the straight rod 22 of the first mixing rod 19 are structurally adapted to the accommodating space of the cooling section 5. The straight rod 22 can increase the contact range with the material in the cooling section 5, enhance the stirring force, and make the material fully turn over during the cooling process, ensuring uniform heat dissipation of the material and avoiding material sticking or clumping due to uneven local heat dissipation, while improving the mixing effect.

[0030] In the example of this application, the second mixing rod 20 is rotatably disposed inside the discharge section 15. The second mixing rod 20 includes a second extension rod 23. An arc rod 24 is provided at one end of the second extension rod 23 near the inner wall of the discharge section 15. The angle of the arc rod 24 is adapted to the angle of the inner wall of the discharge section 15.

[0031] As a preferred example of this utility model, the angle of the arc rod 24 of the second mixing rod 20 is adapted to the angle of the inner wall of the discharge section 15. During the mixing process, the arc rod 24 can rotate against the inner wall of the discharge section 15 to scrape off the residual material attached to the inner wall of the discharge section 15, thus avoiding material waste. At the same time, it assists the material to move towards the discharge pipe 16, further improving the smoothness and thoroughness of discharge, and preventing the accumulation of residual material from affecting subsequent processing.

[0032] In the example of this application, the bottom end of the discharge section 15 is provided with an air-cooling component 25, the air-cooling component 25 includes a high-pressure blower 26, the high-pressure blower 26 is connected to the outer wall of the discharge section 15, and the output end of the high-pressure blower 26 is provided with an air outlet pipe 27, the air outlet pipe 27 penetrates the outer wall of the discharge section 15 and extends inward into the cooling section 5.

[0033] As a preferred example of this utility model, the high-pressure fan 26 of the air-cooling component 25 sends air into the cooling section through the air outlet 27, forming a direct air-cooling effect. This forms a dual cooling structure of internal air cooling and external water cooling with the cooling pipe 8 on the outer peripheral wall of the cooling section 5, which significantly improves the cooling efficiency and cooling uniformity, quickly reduces the material temperature, and avoids performance changes or adhesion of the material due to excessive residence time during the cooling process.

[0034] In the example of this application, the second rotating shaft 13 is a hollow structure, and both the first mixing rod 19 and the second mixing rod 20 are provided with ventilation holes 29. The ventilation holes 29 are connected to the hollow cavity of the second rotating shaft 13. The second rotating shaft 13 is provided with a sealed bearing 28 at one end near the air outlet pipe 27. The air outlet pipe 27 is sealed and connected to the hollow cavity of the second rotating shaft 13 by rotation through the sealed bearing 28.

[0035] As a preferred example of this utility model, the hollow structure of the second rotating shaft 13 is connected to the ventilation hole 29 of the mixing rod. The air outlet 27 delivers cold air to the hollow cavity of the second rotating shaft 13 through the sealed bearing 28. The cold air is blown directly into the material through the ventilation hole 29, forming a cooling mode of external water cooling pipe 8 and internal air cooling, which makes the cooling more comprehensive and efficient. At the same time, the cold air acts on the material during the stirring process, which not only ensures uniform heat dissipation, but also reduces the adhesion of the material to the mixing rod and the cavity wall, further improving the mixing quality.

[0036] In the example of this application, the air outlet pipe 27 is provided with branch pipes 30 on both sides of the portion between the high-pressure blower 26 and the second rotating shaft 13, and the air outlet end of the branch pipe 30 is opposite to the bottom of the discharge section 15.

[0037] As a preferred example of this utility model, the air outlet end of the branch pipe 30 of the air outlet pipe 27 is opposite to the bottom of the discharge section 15, which can deliver cold air to the bottom of the discharge section 15. On the one hand, it can assist in cooling the material at the bottom of the discharge section 15, and on the other hand, it can use the airflow impact force to clean up the residual material at the bottom of the discharge section 15, avoid material accumulation and blockage of the discharge pipe 16, further improve the thoroughness of discharge, reduce material waste, ensure the cleanliness of the device, and reduce subsequent cleaning and maintenance costs.

[0038] 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 stirring device for producing plastic products, characterized in that: The mixing tank (1) is provided with a feeding end (2) at one end. The mixing tank (1) has an axially extending receiving cavity (3) inside. The receiving cavity (3) is divided into a heating part (4) and a cooling part (5) from top to bottom along the vertical direction of the mixing tank (1). The heating part (4) includes a heating hopper (6). The outer peripheral wall of the heating hopper (6) is fixedly connected to the upper inner wall of the receiving cavity (3). The bottom of the heating hopper (6) is provided with a feeding port (7). The heating part (4) and the cooling part (5) are connected through the feeding port (7). The outer wall of the mixing tank (1) is uniformly and fixedly surrounded by cooling pipes (8) in the circumferential direction in the area corresponding to the cooling part (5). The mixing tank (1) is provided with an agitator (9) at one end. The agitator (9) includes a drive (10). The drive (10) is installed on the side of the mixing tank (1) near the feed end (2). The drive end of the drive (10) is provided with a first rotating shaft (11). The first rotating shaft (11) moves through the outer wall of the mixing tank (1) and extends inward into the receiving cavity (3). A plurality of stirring blades (12) are symmetrically arranged on the outer periphery of the first rotating shaft (11). The stirring blades (12) are rotatably arranged in the receiving cavity (3). A second rotating shaft (13) is provided at the end of the first rotating shaft (11) away from the drive (10). The second rotating shaft (13) is rotatably arranged in the cooling part (5). A blade assembly (14) is provided on the second rotating shaft (13) extending outward. The blade assembly (14) and the second rotating shaft (13) are integrally formed. The mixing tank (1) has a discharge section (15) at one end away from the drive unit (10). The discharge section (15) is connected to the receiving cavity (3). A discharge pipe (16) is provided on one side of the discharge section (15).

2. The stirring device for producing plastic products according to claim 1, characterized in that, The heating element (6) is provided with several heating elements (17).

3. The stirring device for producing plastic products according to claim 1, characterized in that, A spiral conveyor (18) is coaxially fixed between the first rotating shaft (11) and the second rotating shaft (13). The spiral conveyor (18) is rotatably disposed inside the feed inlet (7) and is in clearance fit with the inner wall of the feed inlet (7).

4. The stirring device for producing plastic products according to claim 1, characterized in that, The blade assembly (14) includes a first mixing rod (19) and a second mixing rod (20), which are arranged sequentially along the second rotating shaft (13).

5. A stirring device for producing plastic products according to claim 4, characterized in that, The first mixing rod (19) is rotatably disposed in the cooling section (5). The first mixing rod (19) includes a first extension rod (21). One end of the first extension rod (21) is connected to the second rotating shaft (13). The first extension rod (21) has a straight rod (22) at the end away from the second rotating shaft (13).

6. The stirring device for producing plastic products according to claim 4, characterized in that, The second mixing rod (20) is rotatably disposed inside the discharge section (15). The second mixing rod (20) includes a second extension rod (23). The second extension rod (23) has an arc rod (24) at one end near the inner wall of the discharge section (15). The angle of the arc rod (24) is adapted to the angle of the inner wall of the discharge section (15).

7. The stirring device for producing plastic products according to claim 1, characterized in that, The bottom of the discharge section (15) is provided with an air-cooling component (25).

8. A stirring device for producing plastic products according to claim 7, characterized in that, The air-cooled assembly (25) includes a high-pressure blower (26), which is connected to the outer wall of the discharge section (15). The output end of the high-pressure blower (26) is provided with an air outlet pipe (27), which penetrates the outer wall of the discharge section (15) and extends inward into the cooling section (5).

9. A stirring device for producing plastic products according to claim 5, characterized in that, The second rotating shaft (13) is a hollow structure, and both the first mixing rod (19) and the second mixing rod (20) are provided with ventilation holes (29). The ventilation holes (29) are connected to the hollow cavity of the second rotating shaft (13). The second rotating shaft (13) is provided with a sealed bearing (28) at one end near the air outlet pipe (27). The air outlet pipe (27) is sealed and connected to the hollow cavity of the second rotating shaft (13) by rotation through the sealed bearing (28).

10. A stirring device for producing plastic products according to claim 9, characterized in that, The air outlet pipe (27) has branch pipes (30) on both sides of the portion between the high-pressure blower (26) and the second rotating shaft (13), and the air outlet end of the branch pipe (30) is opposite to the bottom of the discharge section (15).

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