Extrusion structure of eraser color master batch granulation equipment and granulation equipment

Abstract

The invention discloses an extrusion structure of eraser color master batch granulation equipment and the granulation equipment. Comprising an extrusion machine frame, a material inlet is formed in the feeding end of the extrusion machine frame, materials enter the extrusion machine frame from the material inlet, a crushing tool bit is arranged at the material inlet and connected with a crushing driving part, a material outlet is further formed in the feeding end of the extrusion machine frame, and the crushing driving part is connected with the material outlet. The material outlet is provided with a first extrusion screw rod and a second extrusion screw rod, the first extrusion screw rod is connected with a first driving part, the first driving part is arranged at the discharging end of the extrusion rack, the second extrusion screw rod is connected with a second driving part, and the second driving part is arranged at the discharging end of the extrusion rack. The second driving part is arranged at the discharging end of the extruding machine frame, a pelleting outlet is formed in the discharging end of the extruding machine frame, and extruded particles are discharged out of the machine frame through the pelleting outlet. The double-screw extrusion granulator can solve the problem that the double-screw extrusion granulator lacks an effective crushing function.

Description

Technical Field

[0001] This application relates to the field of granulator technology, specifically to an extrusion structure and granulation equipment for an eraser masterbatch granulation device. Background Technology

[0002] Twin-screw extrusion granulation technology originated in Italy in the 1930s and achieved technological breakthroughs and widespread application in the late 1960s and early 1970s. Based on the characteristics of solid-liquid mixing and dispersion systems, this technology uses two meshing screws rotating within a barrel to melt, mix, and convey solid powder and a small amount of liquid additives under high temperature and pressure. Its core function lies in utilizing the inherent adhesive properties of the materials, using mechanical force to bind micron-sized solid powder together, increasing particle size, and ultimately forming uniformly sized, regularly shaped spherical or cylindrical particles. This granulation method has significant advantages such as high heat transfer efficiency, uniform mixing, and continuous production, and is currently widely used in plastic modification, food processing, pharmaceutical preparations, and chemical raw materials.

[0003] With the increasing demands of modern industry on granulation processes, traditional twin-screw extruders are gradually revealing their technical limitations when processing special materials. Existing equipment is primarily designed for powdery or small granular materials with a particle size less than 3mm. When encountering large granular materials with a particle size exceeding 5mm, the following technical defects are common: First, large-sized materials are prone to bridging when entering the screw meshing zone, leading to poor feeding or even blockage; second, existing screw components lack effective crushing capabilities, making it difficult for large particles to undergo the necessary size reduction before the melting zone, directly affecting the uniformity of subsequent mixing; third, uncrushed hard particles exacerbate wear on the screw and barrel, significantly reducing the equipment's service life.

[0004] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present invention, and therefore may include information that does not constitute prior art. Application content

[0005] To address the shortcomings of existing technologies, this application discloses an extrusion structure and granulation equipment for an eraser masterbatch granulation device, which can solve the problem of the lack of effective crushing function in twin-screw extruders.

[0006] To achieve the above objectives, this application provides the following technical solution: The extrusion structure of the eraser masterbatch granulation equipment includes an extruder frame. A material inlet is provided at the feed end of the extruder frame, through which material enters the extruder frame. A crushing cutter head is provided at the material inlet, connected to a crushing drive unit. A material outlet is also provided at the feed end of the extruder frame, through which crushed material is discharged. A first extrusion screw and a second extrusion screw are provided at the material outlet. The first extrusion screw is connected to a first drive unit, which is located at the discharge end of the extruder frame. The second extrusion screw is connected to a second drive unit, which is also located at the discharge end of the extruder frame. A granulation outlet is provided at the discharge end of the extruder frame, through which extruded granules are discharged from the frame.

[0007] In a preferred embodiment, a mounting base is provided at the discharge end of the extruder frame, the distance between the mounting base and the material outlet is adjustable, the axial lengths of the first extrusion screw and the second extrusion screw are adjustable, and a guide hole is provided on the mounting base.

[0008] In a preferred embodiment, the material inlet is located on the upper surface of the extruder frame, the material outlet is located on the side of the extruder frame facing the discharge end, and the opening area of ​​the material inlet is set to be larger than the opening area of ​​the material outlet.

[0009] In a preferred embodiment, the crushing drive component is disposed on the side of the extruder frame facing the feed end, the crushing drive component is configured as a servo motor, and the crushing drive component is connected to the crushing cutter head via a transmission.

[0010] In a preferred embodiment, one end of the first extrusion screw is rotatably connected to the material outlet, the first drive unit is configured as a servo motor, and the other end of the first drive unit is connected to the first drive unit via a transmission.

[0011] In a preferred embodiment, one end of the second extrusion screw is rotatably connected to the material outlet, the second drive component is configured as a servo motor, and the other end of the second drive component is connected to the second drive component via a transmission connection.

[0012] In addition, this application also discloses granulation equipment, including an extrusion structure for an eraser masterbatch granulation equipment, wherein the extrusion structure of the eraser masterbatch granulation equipment is the extrusion structure of the eraser masterbatch granulation equipment described in any of the above technical solutions.

[0013] This application discloses an extrusion structure and granulation equipment for an eraser masterbatch granulation device, which has the following advantages: Adding a dedicated crusher unit to the front end of a twin-screw extruder can directly process large-particle raw materials without affecting existing mixing performance, significantly broadening the application scope of twin-screw extrusion granulation technology. It is particularly suitable for emerging fields such as recycled material processing and biomass treatment, and has important industrial application value.

[0014] By integrating a crushing cutter head and a crushing drive unit at the material inlet, this invention innovatively introduces a highly efficient mechanical crushing step at the front end of the extrusion granulation process. This structure can instantly crush large chunks or coarse particles of raw material into small, uniformly sized fragments, fundamentally solving the technical bottleneck of existing twin-screw extruders that cannot directly process large particles due to inlet blockage and bridging, and greatly expanding the range of applicable raw materials for the equipment.

[0015] By setting the mounting base to be distance adjustable and designing the extrusion screw to have an adjustable axial length, this invention endows the equipment with excellent structural adaptability. Users can flexibly adjust the effective working length and length-to-diameter ratio of the screw according to the characteristics of different materials or product specifications, thereby precisely controlling the material residence time, shear history, and plasticizing effect, achieving multi-purpose functionality and meeting the diverse, small-batch flexible production needs. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0017] Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without any creative effort.

[0018] Figure 1 This is a schematic diagram of an embodiment of this application; Figure 2 This is a schematic diagram of the feed end in an embodiment of this application; Figure 3 This is a schematic diagram of the discharge end in an embodiment of this application. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0020] Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] Example 1 like Figures 1 to 3 As shown, this application describes the extrusion structure of the eraser masterbatch granulation equipment. This structure mainly includes an extruder frame 1, a crushing mechanism, and a twin-screw extrusion mechanism.

[0022] The extruder frame 1 is generally cylindrical, with its axial direction defined as the feed end and discharge end. The material inlet 2 is located on the top surface of the extruder frame 1. The opening area of ​​the material inlet 2 is designed to be relatively large to ensure that large-volume block or granular raw materials can be smoothly fed in.

[0023] The crushing mechanism is integrated below the material inlet 2. This mechanism consists of a crushing cutter head 31 and a crushing drive component 32. The crushing drive component 32 is preferably a servo motor, which is bolted to the end of the extruder frame 1 facing the feed end. The output shaft of the crushing drive component 32 is connected to the crushing cutter head 31 via a coupling, thereby efficiently transmitting power to the cutter head. During operation, large particles are fed into the material inlet 2 and immediately cut, impacted, and crushed by the high-speed rotating crushing cutter head 31, pre-processing them into smaller material fragments, laying the foundation for subsequent extrusion granulation.

[0024] The material, pre-treated by the crushing mechanism, is collected at the material outlet 4 and enters the internal cavity of the extruder frame 1. In this embodiment, the material outlet 4 is located on the side wall of the cavity of the extruder frame 1 and faces its discharge end. The opening area of ​​the material outlet 4 is set to be smaller than the opening area of ​​the material inlet 2 to achieve a certain degree of material compression and guidance.

[0025] The twin-screw extrusion mechanism is located at the material outlet 4, and its core includes a first extrusion screw 51, a second extrusion screw 53, and their respective drive units. One end of the first extrusion screw 51 is rotatably connected to one side of the material outlet 4 via a bearing, and its axial extension extends to the discharge end of the extruder frame 1. Similarly, the second extrusion screw 53 is arranged parallel to the first extrusion screw 51, and the two mesh with each other to form a standard co-rotating or anti-rotating twin-screw system.

[0026] At the discharge end of the extruder frame 1, the first drive component 52 and the second drive component 54 are fixedly installed. They are preferably servo motors, connected to the ends of the first extrusion screw 51 and the second extrusion screw 53 via independent transmission systems. By independently controlling the two drive components, the speed and direction of the two screws can be precisely adjusted to meet the mixing, compression, and conveying requirements of materials with different properties. During rotation, the two screws melt, mix, and homogenize the crushed material from the material outlet 4, and then convey it forward.

[0027] At the end of the discharge end of the extruder frame 1, the granulation outlet 7 is provided. The fully plasticized and homogenized melt is discharged through the granulation outlet 7 under the thrust of the screw, and is cut into uniformly sized granules by the matching pelletizing device.

[0028] A mounting base 6 is provided at the discharge end of the extruder frame 1. This mounting base 6 is connected to the frame 1 by bolts and has elongated guide holes 61. By loosening the bolts, the entire mounting base 6 can slide towards or away from the material outlet 4; after adjustment, the bolts can be tightened. This adjustable design allows for fine-tuning of the positions of the first drive component 52 and the second drive component 54.

[0029] Accordingly, the first extrusion screw 51 and the second extrusion screw 53 are designed with adjustable axial lengths. For example, different lengths of the first extrusion screw 51 and the second extrusion screw 53 can be used to adapt to changes in the position of the mounting base 6. This design allows the equipment to flexibly adapt to process requirements with different length-to-diameter ratios, enhancing the equipment's versatility and process adaptability.

[0030] The crushing drive component 32, the first drive component 52, and the second drive component 54 are all preferably servo motors, which provides a foundation for realizing automated control of the entire machine. Operators can independently set the rotation speed of the crushing head, the rotation speed and direction of the twin screws through the central controller, thereby achieving precise control over the crushed particle size, melt residence time, shear strength, and extrusion output. This is particularly suitable for the production of products such as eraser masterbatch, which have extremely high requirements for dispersion uniformity and color consistency.

[0031] Example 2 The granulation equipment described in this application includes an extrusion structure for an eraser masterbatch granulation equipment, wherein the extrusion structure for the eraser masterbatch granulation equipment is the same as the extrusion structure for the eraser masterbatch granulation equipment described in the above embodiments.

[0032] It should be noted that, in this article, relational terms 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.

[0033] Moreover, 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.

[0034] In the absence of further restrictions, an element defined by the phrase "comprising a..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0035] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. An extrusion structure of a rubber eraser color master batch granulation apparatus, comprising an extruder frame, a material inlet is provided at a feeding end of the extruder frame, and material enters the extruder frame from the material inlet, wherein, The material inlet is provided with a crushing cutter head, the crushing cutter head is connected with a crushing driving element, the extruder frame is further provided with a material outlet at the feeding end, the crushed material is discharged from the material outlet, a first extrusion screw and a second extrusion screw are arranged at the material outlet, the first extrusion screw is connected with a first driving element, the first driving element is arranged at the discharging end of the extruder frame, the second extrusion screw is connected with a second driving element, the second driving element is arranged at the discharging end of the extruder frame, a granulating outlet is arranged at the discharging end of the extruder frame, and the extruded particles are discharged from the granulating outlet.

2. The extrusion structure of the eraser color master granulation apparatus according to claim 1, wherein, A mounting base is arranged at the discharging end of the extruder frame, the mounting base is adjustably arranged relative to the distance from the material outlet, and the axial length of the first extrusion screw and the second extrusion screw is adjustably arranged, and a guide hole is arranged at the mounting base.

3. The extrusion structure of the eraser color master granulation apparatus according to claim 1, wherein, The material inlet is arranged on the upper surface of the extruder frame, the material outlet is arranged on the side of the extruder frame facing the discharging end, and the opening area of the material inlet is arranged to be larger than the opening area of the material outlet.

4. The extrusion structure of the eraser color master granulation apparatus according to claim 1, wherein, The crushing driving element is arranged on the side of the extruder frame facing the feeding end, the crushing driving element is arranged as a servo motor, and the crushing driving element and the crushing cutter head are in transmission connection.

5. The extrusion structure of the eraser color master granulation apparatus according to claim 1, wherein, One end of the first extrusion screw is rotationally connected with the material outlet, the first driving element is arranged as a servo motor, and the other end of the first driving element is in transmission connection with the first driving element.

6. The extrusion structure of the eraser color master granulation apparatus according to claim 1, wherein, One end of the second extrusion screw is rotationally connected with the material outlet, the second driving element is arranged as a servo motor, and the other end of the second driving element is in transmission connection with the second driving element.

7. A pelletizing apparatus comprising an extrusion structure of an eraser color masterbatch pelletizing apparatus, wherein, The extrusion structure of the rubber eraser color master batch granulating device is the extrusion structure of the rubber eraser color master batch granulating device according to any one of claims 1 to 6.

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