A plastic mixer

Abstract

The utility model relates to the technical field of plastic mixing, and specifically discloses a plastic mixing machine, which comprises a machine box, an installation frame fixedly arranged inside the machine box, a mixing frame fixedly arranged through the installation frame, an anti-caking mechanism arranged inside the mixing frame, a lifting assembly fixedly arranged inside the machine box, a ventilation opening formed in the top of the machine box, and a dust screen fixedly arranged inside the ventilation opening, wherein a heat exchange plate and a spiral heat exchange channel are arranged on the inner side wall of the mixing frame, heating or cooling medium can be introduced into the heat exchange channel, the moisture in the material can be effectively evaporated by heating to prevent moisture caking, and the material can be cooled to avoid thermal caking caused by frictional overheating, the caked material can be subjected to powerful mechanical stirring and crushing under the cooperation of the stirring and dispersing assembly and the control assembly, the lifting mechanism is prevented from being blocked during mixing, and the mixing effect is improved.

Description

Technical Field

[0001] This utility model belongs to the field of plastic mixing technology, and specifically relates to a plastic mixing machine. Background Technology

[0002] In the production of plastic products, it is usually necessary to fully and evenly mix plastic granules with various additives such as color masterbatch, fillers, and plasticizers to ensure the stability of the color, performance, and quality of the final product. Vertical mixers are one of the common pieces of equipment to complete this process. Their working principle is to pile granular plastic materials in a mixing drum, and use a spiral lifting rod set in the center of the drum to continuously lift the materials from the bottom to the top, and then use the weight of the materials themselves to throw them down. In this process, the materials are circulated and mixed.

[0003] Plastic raw materials (especially PET, PA nylon, etc.) easily absorb moisture from the environment. When they become damp, the particles stick together and form clumps of varying sizes. Existing vertical mixers usually lack effective drying functions. Relying solely on mechanical mixing is insufficient to effectively break up these clumps formed due to moisture. These clumps not only cannot be mixed evenly with other components, but they can also clog the lifting mechanism, leading to reduced lifting efficiency or even equipment jamming. Ultimately, this results in uneven mixing, color differences, or performance defects in the product, affecting its use. Utility Model Content

[0004] The purpose of this invention is to provide a plastic mixing machine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A plastic mixing machine includes: a machine casing, an installation frame fixedly installed inside the machine casing, a mixing frame passing through and fixedly installed on the installation frame, an anti-caking mechanism inside the mixing frame, a lifting component fixedly installed inside the machine casing, and a ventilation opening on the top of the machine casing, with a dustproof net fixedly installed inside the ventilation opening;

[0007] The anti-caking mechanism includes a heat exchange plate fixedly mounted on the inner side wall of the mixing frame. The heat exchange plate has a spirally arranged heat exchange channel inside. The top and bottom of the heat exchange channel are provided with connecting pipes. The connecting pipes are fixedly mounted on the outer side wall of the heat exchange plate and communicate with the heat exchange channel. The end of the connecting pipe passes through the mixing frame and extends outward. The heat exchange plate is cylindrical and hollow. The mixing frame has a stirring and dispersing component inside. The top of the mixing frame has a mounting plate with a control component.

[0008] Preferably, the mixing and dispersing assembly includes a rotating rod that passes through and is rotatably mounted on a mounting plate. A fixed plate is rotatably mounted at the bottom of the rotating rod. The outer wall of the fixed plate is fixedly mounted on the inner wall of the mixing frame. An installation roller is fixedly mounted on the outer wall of the rotating rod. Multiple mixing rods are fixedly mounted on the outer wall of the installation roller. Multiple vertical rods are fixedly mounted on the outer wall of the mixing rods.

[0009] Preferably, the control component includes a sealed box fixedly mounted on the top of the mounting plate, a first reduction motor fixedly mounted on the top of the mounting plate, a rotating shaft fixedly mounted on the output end of the first reduction motor, and bevel gears fixedly mounted on the top of the rotating rod and the end of the rotating shaft, with the two bevel gears meshing with each other.

[0010] Preferably, the lifting assembly includes a mounting box fixedly installed at the bottom of the chassis, a spiral lifting rod rotatably installed at the bottom of the mounting box, a second reduction motor fixedly installed at the top of the chassis, and one side of the top of the spiral lifting rod penetrating the mounting box and the top of the chassis and fixedly connected to the output end of the second reduction motor.

[0011] Preferably, a feeding frame is fixedly provided at the bottom of the mixing frame, the top of the feeding frame is connected to the bottom of the mixing frame, the bottom of the feeding frame is inclined downward and fixedly connected to the outer wall of the mounting box, and the feeding frame and the mounting box are connected through a feeding port.

[0012] Preferably, the top of the installation box has a discharge port, and a return pipe is provided at the discharge port. The return pipe is inclined downwards, the top of the return pipe is fixedly installed on the outer wall of the installation box, and the bottom of the return pipe is located above the mixing frame.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] Heating or cooling media can be introduced through the heat exchange plates and internal spiral heat exchange channels set on the inner side wall of the mixing frame. Heating can effectively evaporate the moisture in the material to prevent it from becoming damp and clumping, while cooling can prevent hot melting and clumping caused by excessive friction. The mixing and dispersing component, consisting of a rotating rod, mounting roller, stirring rod, and vertical rod, powerfully stirs and crushes the material under the drive of bevel gear transmission and the first reduction motor. This prevents the material from clogging the lifting mechanism during mixing and affecting the mixing effect. The lifting and circulation structure, consisting of a spiral lifting rod, a feeding frame, and an inclined return pipe, continuously circulates and mixes the material longitudinally. Combined with the ventilation openings and dustproof nets at the top of the mixing frame, the effective discharge of moisture during the mixing process is ensured while preventing dust from escaping. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present utility model;

[0016] Figure 2 This is a cross-sectional view of the present invention;

[0017] Figure 3 This is a cross-sectional view of the mixing frame in this utility model;

[0018] Figure 4 for Figure 3 Enlarged view of the structure at point A in the middle;

[0019] In the diagram: 1. Chassis; 2. Mounting frame; 3. Mixing frame; 4. Heat exchange plate; 5. Heat exchange channel; 6. Connecting pipe; 7. Mounting plate; 8. Rotating rod; 9. Mounting roller; 10. Stirring rod; 11. Vertical rod; 12. First geared motor; 13. Rotating shaft; 14. Bevel gear; 15. Mounting box; 16. Spiral lifting rod; 17. Second geared motor; 18. Discharge frame; 19. Return pipe; 20. Dustproof net. Detailed Implementation

[0020] 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.

[0021] Example 1:

[0022] Please see Figure 1 - Figure 4 As shown, a plastic mixing machine includes: a machine housing 1, an installation frame 2 fixedly installed inside the machine housing 1, a mixing frame 3 passing through and fixedly installed on the installation frame 2, an anti-caking mechanism inside the mixing frame 3, a lifting component fixedly installed inside the machine housing 1, and a ventilation opening on the top of the machine housing 1, with a dustproof net 20 fixedly installed inside the ventilation opening.

[0023] The anti-caking mechanism includes a heat exchange plate 4 fixedly installed on the inner wall of the mixing frame 3. The heat exchange plate 4 has a spiral heat exchange channel 5 inside. The top and bottom of the heat exchange channel 5 are provided with connecting pipes 6. The connecting pipes 6 are fixedly installed on the outer wall of the heat exchange plate 4 and connected to the heat exchange channel 5. The end of the connecting pipe 6 passes through the mixing frame 3 and extends outward. The heat exchange plate 4 is cylindrical and hollow. The mixing frame 3 is provided with a stirring and dispersing component. The top of the mixing frame 3 is provided with a mounting plate 7, and the mounting plate 7 is provided with a control component.

[0024] As can be seen from the above, the output and return pipelines of the external temperature control equipment circulation system can be connected to the connecting pipes 6 located at the top and bottom of the heat exchange channel 5, respectively. When a high-temperature medium (such as heat transfer oil) is introduced, the heat is evenly transferred to the material through the wall of the heat exchange plate 4, causing the internal moisture to evaporate. The water vapor is discharged through the vent at the top of the casing 1, thereby effectively solving the problem of material clumping due to moisture. When a low-temperature medium (such as cooling water) is introduced, it can absorb the heat generated by the friction and stirring of the material during the mixing process, preventing the material from softening and sticking due to overheating.

[0025] It should be further explained that the spiral heat exchange channel 5 can be a spiral metal tube directly embedded or welded inside the heat exchange plate 4, or it can be a spiral channel directly machined inside the heat exchange plate 4 during casting. Both forms can achieve medium circulation.

[0026] Specifically, regarding the above-mentioned mixing and dispersing assembly and control assembly, the mixing and dispersing assembly includes a rotating rod 8 that passes through and is rotatably mounted on the mounting plate 7. A fixed plate is rotatably mounted at the bottom of the rotating rod 8. The outer side wall of the fixed plate is fixedly mounted on the inner side wall of the mixing frame 3. An mounting roller 9 is fixedly mounted on the outer side wall of the rotating rod 8. Multiple mixing rods 10 are fixedly mounted on the outer side wall of the mounting roller 9. Multiple vertical rods 11 are fixedly mounted on the outer side wall of the mixing rods 10.

[0027] The control assembly includes a sealed box fixedly mounted on the top of the mounting plate 7. A first reduction motor 12 is fixedly mounted on the top of the mounting plate 7. A rotating shaft 13 is fixedly mounted on the output end of the first reduction motor 12. The top of the rotating rod 8 and the end of the rotating shaft 13 both pass through the sealed box and are fixedly mounted with bevel gears 14. The two bevel gears 14 are meshed and connected.

[0028] As can be seen from the above, by working together with the mixing and dispersing component and the control component, the agglomerated material is broken up. After the first reduction motor 12 is started, it drives a pair of meshing bevel gears 14 to rotate through the output shaft 13, and then transmits the power vertically to the rotating rod 8 below, which drives the mounting roller 9 fixed on it to rotate synchronously. The multiple mixing rods 10 radially distributed on the outside of the mounting roller 9 and the numerous vertical rods 11 fixed on them rotate within the mixing frame 3.

[0029] During rotation, the stirring rod 10 exerts a strong radial shearing and scattering effect on the material, while the vertical rod 11, like comb teeth, penetrates, tears, and refines the material clumps, increasing the contact probability and intensity between the stirring components and the material. This efficiently breaks up clumps that are sticky or caused by moisture or overheating, ensuring that all material particles can participate in subsequent circulation mixing in a single form. At the same time, increased stirring also helps the material to fully contact the surface of the heat exchange plate 4, improving heat exchange efficiency.

[0030] Example 2:

[0031] Specifically, regarding the aforementioned lifting assembly, the lifting assembly includes a mounting box 15 fixedly installed at the bottom of the housing 1, a spiral lifting rod 16 rotatably installed at the bottom of the mounting box 15, a second reduction motor 17 fixedly installed at the top of the housing 1, and the top side of the spiral lifting rod 16 passing through the mounting box 15 and the top of the housing 1 and fixedly connected to the output end of the second reduction motor 17.

[0032] A feeding frame 18 is fixedly installed at the bottom of the mixing frame 3. The top of the feeding frame 18 is connected to the bottom of the mixing frame 3. The bottom of the feeding frame 18 is inclined downward and fixedly connected to the outer wall of the mounting box 15. The feeding frame 18 and the mounting box 15 are connected through the feeding port.

[0033] The top of the mounting box 15 has a discharge port, and a return pipe 19 is provided at the discharge port. The return pipe 19 is inclined downwards, and the top of the return pipe 19 is fixedly installed on the outer wall of the mounting box 15. The bottom of the return pipe 19 is located above the mixing frame 3.

[0034] As can be seen from the above, the material initially mixed and dispersed by the mixing frame 3 is guided by the inclined feeding frame 18 at its bottom, and automatically gathers by gravity and smoothly enters the installation box 15 below through the feed inlet. Inside the installation box 15, the spiral lifting rod 16, driven by the second reduction motor 17, continuously rotates and conveys the incoming material vertically from the bottom upwards. After being lifted by the spiral lifting rod 16 to the discharge port at the top of the installation box 15, the material falls into the inclined return pipe 19. The inclination angle of the return pipe 19 gives it both guiding and buffering functions. The material slides down the pipe wall and is guided back to the space above the mixing frame 3, completing one lifting cycle. Through multiple lifting cycles, the material is mixed evenly, improving the mixing effect.

[0035] 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 plastic mixing machine, characterized in that, include: The chassis (1) has a mounting frame (2) fixedly installed inside. A mixing frame (3) is installed through and fixedly installed on the mounting frame (2). An anti-caking mechanism is provided inside the mixing frame (3). A lifting component is fixedly installed inside the chassis (1). A ventilation opening is provided on the top of the chassis (1). A dustproof net (20) is fixedly installed inside the ventilation opening. The anti-caking mechanism includes a heat exchange plate (4) fixedly installed on the inner side wall of the mixing frame (3). The heat exchange plate (4) has a spiral heat exchange channel (5) inside. The heat exchange channel (5) is provided with connecting pipes (6) at the top and bottom. The connecting pipes (6) are fixedly installed on the outer side wall of the heat exchange plate (4) and connected to the heat exchange channel (5). The end of the connecting pipe (6) passes through the mixing frame (3) and extends outward. The heat exchange plate (4) is cylindrical and hollow. The mixing frame (3) is provided with a stirring and dispersing component inside. The top of the mixing frame (3) is provided with an installation plate (7). The installation plate (7) is provided with a control component.

2. The plastic mixing machine according to claim 1, characterized in that: The mixing and dispersing assembly includes a rotating rod (8) that passes through and is rotatably mounted on the mounting plate (7). A fixed plate is rotatably mounted at the bottom of the rotating rod (8). The outer side wall of the fixed plate is fixedly mounted on the inner side wall of the mixing frame (3). An installation roller (9) is fixedly mounted on the outer side wall of the rotating rod (8). Multiple stirring rods (10) are fixedly mounted on the outer side wall of the installation roller (9). Multiple vertical rods (11) are fixedly mounted on the outer side wall of the stirring rods (10).

3. A plastic mixing machine according to claim 2, characterized in that: The control component includes a sealed box fixedly installed on the top of the mounting plate (7). A first reduction motor (12) is fixedly installed on the top of the mounting plate (7). A rotating shaft (13) is fixedly installed at the output end of the first reduction motor (12). The top of the rotating rod (8) and the end of the rotating shaft (13) both pass through the sealed box and are fixedly installed with bevel gears (14). The two bevel gears (14) are meshed and connected.

4. A plastic mixing machine according to claim 1, characterized in that: The lifting assembly includes a mounting box (15) fixedly installed at the bottom of the chassis (1). A spiral lifting rod (16) is rotatably installed at the bottom of the mounting box (15). A second geared motor (17) is fixedly installed at the top of the chassis (1). One side of the top of the spiral lifting rod (16) passes through the mounting box (15) and the top of the chassis (1) and is fixedly connected to the output end of the second geared motor (17).

5. A plastic mixing machine according to claim 4, characterized in that: The bottom of the mixing frame (3) is fixedly provided with a feeding frame (18). The top of the feeding frame (18) is connected to the bottom of the mixing frame (3). The bottom of the feeding frame (18) is inclined downward and fixedly connected to the outer wall of the mounting box (15). The feeding frame (18) and the mounting box (15) are connected through the feed inlet.

6. A plastic mixing machine according to claim 4, characterized in that: The top of the installation box (15) is provided with a discharge port, and a return pipe (19) is provided at the discharge port. The return pipe (19) is inclined downward. The top of the return pipe (19) is fixedly installed on the outer wall of the installation box (15), and the bottom of the return pipe (19) is located above the mixing frame (3).

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