Plastic extrusion raw material mixing equipment

Abstract

This utility model discloses a plastic extrusion raw material mixing equipment, including a mixing extruder and a feeding pipe. A premixing cylinder is installed at the top of the feeding pipe, a connecting pipe is installed on one side of the premixing cylinder, a distribution box is installed at the top of the connecting pipe, several feed pipes are installed at the top of the distribution box, several partition plates are installed inside the distribution box, and several rotating opening and closing plates are arranged inside the distribution box. A weighing device for weighing materials is installed on the rotating opening and closing plates. Through the distribution box and the premixing cylinder, the problem of uneven initial component distribution due to the lack of effective pre-dispersion or uniform distribution means in the raw material feeding stage is solved. Furthermore, the combination of the preliminary mixing in the premixing cylinder and the subsequent processing of the mixing extruder enhances the dispersion effect on high viscosity, high filler content, or micro-nano-level auxiliary raw materials, so that the components of the raw materials can be more fully integrated, avoiding uneven dispersion and insufficient plasticization of the final material components.

Description

Technical Field

[0001] This utility model relates to the field of mixing machine technology, specifically to plastic extrusion raw material mixing equipment. Background Technology

[0002] In the field of plastics processing, plastic extrusion raw material mixing equipment is the core equipment for processing plastic resins and various auxiliary raw materials. However, current mixing equipment still has significant technical shortcomings in practical applications, making it difficult to meet the demands of high-quality plastics processing. Specifically, during the raw material feeding stage, different types of raw materials are usually directly fed into the mixer together. The lack of effective pre-dispersion or uniform distribution methods results in uneven component distribution from the very beginning. Simultaneously, the mixer primarily relies on a single stirring mechanism for mixing, which has limited shear and extrusion forces. This is particularly inadequate for dispersing high-viscosity, high-filling-volume, or micro / nano-scale auxiliary raw materials, failing to achieve sufficient integration of the raw material components. The combination of these two problems results in uneven component dispersion and insufficient plasticization in the final material, leading to quality issues such as appearance defects and unstable physical properties in subsequent extruded products. This severely restricts product quality improvement and technological development in the plastics extrusion processing industry.

[0003] Therefore, this utility model provides a plastic extrusion raw material mixing equipment. Utility Model Content

[0004] In view of the shortcomings of the existing technology, this utility model provides a plastic extrusion raw material mixing equipment to solve the above problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a plastic extrusion raw material mixing equipment, comprising a mixing extruder and a feeding pipe, wherein a premixing cylinder is installed at the top of the feeding pipe, a connecting pipe is installed on one side of the premixing cylinder, a distribution box is installed at the top of the connecting pipe, a plurality of feeding pipes are installed at the top of the distribution box, a plurality of partition plates are installed inside the distribution box, a plurality of rotating opening and closing plates are provided inside the distribution box, and the plurality of rotating opening and closing plates are rotatably connected to the inner wall of the distribution box or the side wall corresponding to the partition plates, and a weighing device for weighing the material is installed on the rotating opening and closing plates.

[0006] Preferably, a first drive motor is installed at the top of the premixing cylinder, and a rotating rod is driven to the output end of the first drive motor. A pusher propeller and several stirring rods are installed on the side wall of the rotating rod. The stirring rods are located inside the premixing cylinder, and the pusher propeller is located inside the feeding pipe.

[0007] Preferably, the premixing cylinder is provided with two scrapers, which are installed at the ends of the corresponding stirring rods, and the scrapers scrape against the inner wall of the premixing cylinder.

[0008] Preferably, a second drive motor is installed on one side of the material distribution box, and a drive rod is connected to the output end of the second drive motor. Several of the rotating opening and closing plates are installed on the side wall of the drive rod.

[0009] Preferably, the bottom of the material distribution box is provided with a conical feeding bottom shell, and the connecting pipe is connected to the bottom opening of the conical feeding bottom shell.

[0010] Preferably, solenoid valves are installed on the feeding pipe, the connecting pipe, and the plurality of feed pipes to control the material delivery.

[0011] Beneficial effects

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] This utility model solves the problem of uneven initial component distribution due to the lack of effective pre-dispersion or uniform distribution methods during the raw material feeding stage by using a material distribution box and a pre-mixing cylinder. Furthermore, the combination of the initial mixing in the pre-mixing cylinder and the subsequent processing in the compounding extruder enhances the dispersion effect on high-viscosity, high-filling-volume, or micro-nano-scale auxiliary raw materials, allowing the components of the raw materials to be more fully integrated. This avoids uneven dispersion and insufficient plasticization of the final material components, thereby reducing quality problems such as appearance defects and unstable physical properties in subsequent extruded products, and promoting the improvement of product quality and technological development in the plastic extrusion processing industry. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0015] Figure 2 This is a three-dimensional structural schematic diagram of the present invention;

[0016] Figure 3 This is an enlarged cross-sectional structural diagram of the material distribution box in this utility model;

[0017] Figure 4 This is a cross-sectional enlarged structural diagram of the premixing cylinder in this utility model;

[0018] Figure 5 This is an enlarged structural schematic diagram of components such as the rotating opening and closing plate in this utility model.

[0019] In the diagram: 1. Mixing extruder; 11. Feeding pipe; 2. Premixing cylinder; 21. Connecting pipe; 22. First drive motor; 23. Rotating rod; 24. Pushing propeller; 25. Stirring rod; 26. Scraper; 3. Distribution box; 31. Feeding pipe; 32. Divider plate; 33. Rotating opening and closing plate; 331. Weighing device; 34. Conical feeding bottom shell; 35. Second drive motor; 351. Drive rod; 4. Solenoid valve. 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] Please see Figure 1-5 Plastic extrusion raw material mixing equipment includes a mixing extruder 1 and a feeding pipe 11. A premixing cylinder 2 is installed at the top of the feeding pipe 11. A connecting pipe 21 is installed on one side of the premixing cylinder 2. A distribution box 3 is installed at the top of the connecting pipe 21. Several feed pipes 31 are installed at the top of the distribution box 3. Several partition plates 32 are installed inside the distribution box 3. Several rotating opening and closing plates 33 are provided inside the distribution box 3. The rotating opening and closing plates 33 are rotatably connected to the inner wall of the distribution box 3 or the side wall of the corresponding partition plate 32. A weighing device 331 for weighing materials is installed on the rotating opening and closing plates 33.

[0022] Specifically, during operation, different types of raw materials enter the distribution box 3 through several feed pipes 31 at the top of the distribution box 3. The partition plate 32 inside the distribution box 3 divides it into several spaces, each corresponding to different materials. A weighing device 331 on each rotating opening and closing plate 33 can accurately weigh the materials in the corresponding space, ensuring that each raw material is prepared according to the formula ratio. Then, the rotating opening and closing plate 33 rotates, allowing different raw materials to simultaneously enter the premixing cylinder 2 through the connecting pipe 21. The premixing cylinder 2 can perform preliminary mixing of the various raw materials. Its internal structure can generate a certain degree of stirring, allowing the raw materials to achieve a certain degree of pre-dispersion and uniform distribution before entering the mixing extruder 1, improving the uneven initial component distribution of the raw materials. Subsequently, the preliminary mixing... The mixed raw materials enter the compounding extruder 1 through the feeding pipe 11. The compounding extruder 1 then further mixes, melts, and plasticizes the raw materials. In this way, on the one hand, the distribution box 3 and the premixing barrel 2 solve the problem of uneven initial component distribution due to the lack of effective pre-dispersion or uniform distribution methods during the raw material feeding stage. On the other hand, the combination of the initial mixing in the premixing barrel 2 and the subsequent processing in the compounding extruder 1 enhances the dispersion effect on high-viscosity, high-filling-volume, or micro-nano-level auxiliary raw materials, allowing the components of the raw materials to be more fully integrated. This avoids uneven dispersion and insufficient plasticization of the final material components, thereby reducing quality problems such as appearance defects and unstable physical properties of subsequent extruded products, and promoting the improvement of product quality and technological development in the plastic extrusion processing industry.

[0023] In one embodiment of this utility model, such as Figures 1-5 As shown, a first drive motor 22 is installed at the top of the premixing cylinder 2. A rotating rod 23 is connected to the output end of the first drive motor 22. A pusher propeller 24 and several stirring rods 25 are installed on the side wall of the rotating rod 23. The stirring rods 25 are located inside the premixing cylinder 2, and the pusher propeller 24 is located inside the feeding pipe 11.

[0024] Specifically, the first drive motor 22 starts, driving the rotating rod 23 to rotate. The pusher propeller 24 on the side wall of the rotating rod 23 is located inside the feeding pipe 11. Its rotation can push the pre-mixed raw materials in the premixing cylinder 2 towards the mixing extruder 1, ensuring that the raw materials enter the subsequent processing stage stably. At the same time, several stirring rods 25 on the rotating rod 23 rotate with the rotating rod inside the premixing cylinder 2, stirring and mixing the various raw materials entering the premixing cylinder 2, further enhancing the premixing effect of the raw materials, so that different raw materials can be more evenly dispersed and integrated before entering the mixing extruder 1.

[0025] In one embodiment of this utility model, such as Figures 1-5 As shown, two scrapers 26 are provided inside the premixing cylinder 2. The scrapers 26 are installed at the ends of the corresponding stirring rods 25 and scrape against the inner wall of the premixing cylinder 2.

[0026] Specifically, as the first drive motor 22 drives the rotating rod 23 to rotate, the stirring rod 25 rotates accordingly, and the scraper 26 installed at the end of the stirring rod 25 also rotates synchronously. The scraper 26 continuously scrapes the inner wall of the premixing cylinder 2. On the one hand, the scraper 26 can scrape off the raw materials adhering to the inner wall of the premixing cylinder 2, avoiding waste caused by raw material residue and affecting the subsequent mixing accuracy; on the other hand, during the scraping process, it can also play an auxiliary stirring role for the raw materials in the cylinder, further promoting the mixing between different raw materials and improving the uniformity of premixing.

[0027] In one embodiment of this utility model, such as Figures 1-5 As shown, a second drive motor 35 is installed on one side of the material distribution box 3. The output end of the second drive motor 35 is connected to a drive rod 351. Several rotating opening and closing plates 33 are installed on the side wall of the drive rod 351.

[0028] Specifically, the second drive motor 35 starts, and its output drives the drive rod 351 to rotate. Since several rotating opening and closing plates 33 are installed on the side wall of the drive rod 351, the rotation of the drive rod 351 will synchronously drive these rotating opening and closing plates 33 to rotate. When the rotating opening and closing plates 33 rotate, the opening and closing of different spaces in the material distribution box 3 can be controlled, thereby realizing the orderly release of different raw materials, allowing different types of raw materials to enter the connecting pipe 21 according to the set time and amount, and then enter the premixing cylinder 2.

[0029] In one embodiment of this utility model, such as Figures 1-5 As shown, the bottom of the material distribution box 3 is provided with a conical feeding bottom shell 34, and the connecting pipe 21 is connected to the bottom opening of the conical feeding bottom shell 34.

[0030] Specifically, different raw materials, which are classified and stored in the partitioned space within the distribution box 3 and released under the control of the rotating opening and closing plate 33, will fall into the conical feeding bottom shell 34 at the bottom of the distribution box 3. Because the conical feeding bottom shell 34 has a conical structure, its inner wall has an inclined guiding function, which can guide the raw materials to converge towards the bottom opening, avoiding the accumulation, stagnation, or bridging of raw materials at the bottom of the distribution box 3. This ensures that different raw materials can be smoothly and stably transported to the premixing cylinder 2 for subsequent premixing treatment through the connecting pipe 21 connected to the bottom opening of the conical feeding bottom shell 34.

[0031] In one embodiment of this utility model, such as Figures 1-5 As shown, solenoid valves 4 are installed on the feeding pipe 11, the connecting pipe 21 and several feed pipes 31 to control the feeding of materials.

[0032] Specifically, during operation, based on the process requirements of plastic extrusion raw material mixing, the on / off states of the solenoid valves 4 installed on the feeding pipe 11, connecting pipe 21, and several feed pipes 31 can be controlled to achieve precise control over the conveying paths of different materials: the solenoid valves 4 on the several feed pipes 31 can control the timing and amount of corresponding types of raw materials entering the distribution box 3, avoiding disorderly influx of multiple raw materials into the distribution box 3; the solenoid valves 4 on the connecting pipe 21 can control the rhythm of the raw materials that have been weighed or temporarily stored in the distribution box 3 entering the premixing cylinder 2, ensuring that the raw materials are conveyed in an orderly manner according to the premixing requirements; the solenoid valves 4 on the feeding pipe 11 can control the rate at which the raw materials that have completed preliminary mixing in the premixing cylinder 2 enter the mixing extruder 1, avoiding the raw materials being conveyed too fast or too slow, which would affect the subsequent mixing effect.

[0033] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0034] Working principle: During operation, different types of raw materials first enter the distribution box 3 through several feed pipes 31 at the top of the distribution box 3. The partition plate 32 divides them into different spaces. The weighing device 331 on the rotating opening and closing plate 33 accurately weighs the raw materials in each space. The second drive motor 35 starts and drives the drive rod 351 to rotate, which synchronously drives the rotating opening and closing plate 33 to rotate. Different raw materials are released according to the set time and amount and fall into the conical feeding bottom shell 34 at the bottom of the distribution box 3. After being guided and gathered by the conical structure, they enter the premixing cylinder 2 through the connecting pipe 21. During this period, the solenoid valves 4 on each feed pipe 31 and connecting pipe 21 accurately control the timing and amount of raw material delivery. After entering the premixing cylinder 2, the first drive motor 22 drives the rotating rod 23 to rotate, and the stirring rod 25 rotates synchronously to stir and mix the raw materials. The end scraper 26 scrapes the cylinder wall to avoid raw material residue and assists in stirring, improving the uniformity of premixing. After premixing, the raw materials are pushed by the pusher propeller 24 in the feeding pipe 11 along with the rotating rod 23. The conveying rate is controlled by the solenoid valve 4 on the feeding pipe 11, and the materials are stably fed into the mixing extruder 1, finally completing further mixing and melting plasticization.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] 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 extrusion raw material mixing apparatus comprising a mixing extruder (1) and a feeding pipe (11), characterized in that, A premixing cylinder (2) is installed at the top of the feeding pipe (11). A connecting pipe (21) is installed on one side of the premixing cylinder (2). A distribution box (3) is installed at the top of the connecting pipe (21). Several feeding pipes (31) are installed at the top of the distribution box (3). Several partition plates (32) are installed inside the distribution box (3). Several rotating opening and closing plates (33) are provided inside the distribution box (3). Several rotating opening and closing plates (33) are rotatably connected to the inner wall of the distribution box (3) or the side wall of the corresponding partition plate (32). A weighing device (331) for weighing materials is installed on the rotating opening and closing plate (33).

2. The plastic extrusion raw material kneading apparatus according to claim 1, wherein The top of the premixing cylinder (2) is equipped with a first drive motor (22), and the output end of the first drive motor (22) is connected to a rotating rod (23). The side wall of the rotating rod (23) is equipped with a pusher propeller (24) and several stirring rods (25). The stirring rods (25) are located inside the premixing cylinder (2), and the pusher propeller (24) is located inside the feeding pipe (11).

3. The plastic extrusion raw material mixing device according to claim 2, characterized in that, The premixing cylinder (2) is provided with two scrapers (26), which are installed at the ends of the stirring rod (25) and scrape against the inner wall of the premixing cylinder (2).

4. The plastic extrusion raw material mixing device according to claim 1, wherein A second drive motor (35) is installed on one side of the material distribution box (3). The output end of the second drive motor (35) is connected to a drive rod (351). Several rotating opening and closing plates (33) are installed on the side wall of the drive rod (351).

5. The plastic extrusion raw material mixing device according to claim 4, wherein The bottom of the material distribution box (3) is provided with a conical feeding bottom shell (34), and the connecting pipe (21) is connected to the bottom opening of the conical feeding bottom shell (34).

6. The plastic extrusion raw material mixing device according to claim 5, wherein Solenoid valves (4) are installed on the feeding pipe (11), the connecting pipe (21) and several feeding pipes (31) to control the feeding of materials.

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