Double-screw extruder convenient for fully mixing materials

Abstract

The utility model relates to the technical field of material mixing instruments, in particular to a double-screw extruder convenient for fully mixing materials. Comprising a mounting frame, first motors are symmetrically mounted on one side of the mounting frame, first feeding rollers penetrating through the mounting frame are connected to the output ends of the first motors, the two first feeding rollers are located in a feeding barrel, and the tail ends of the two first feeding rollers are rotationally connected with the other side wall of the mounting frame; and material dispersing plates consistent with the two discharging hoppers in layout are obliquely, symmetrically and slidably arranged in a compartment on the right side of the mounting frame, and vibration exciters used for vibrating and dispersing materials are arranged at the bottoms of the material dispersing plates. According to the utility model, through the material dispersing plate and the vibration exciter arranged at the bottom, materials are enabled to be fully vibrated and loosened before reaching a material mixing area, and different types of materials can synchronously and uniformly fall down, so that primary mixing is realized; and then the materials enter the feeding barrel and are heated through the electric heating pipe, so that the viscosity of the materials is reduced, and the materials are ensured to obtain a more sufficient and uniform mixing effect.

Description

Technical Field

[0001] This utility model relates to the field of material mixing equipment technology, and in particular to a twin-screw extruder that facilitates thorough mixing of materials. Background Technology

[0002] Material mixing refers to the process of combining two or more different materials (which can be solid, liquid, or gas) through physical methods to form a relatively homogeneous mixture. This process is widely used in industries such as chemical, pharmaceutical, food, agriculture, and building materials.

[0003] A search revealed a twin-screw extruder for facilitating thorough material mixing, according to patent authorization announcement number CN221953854U. The extrusion tank has disassembly structures on both sides of its right side and a material mixing structure on its top. The disassembly structures include two slots on both sides of the extrusion tank, each slot containing a slidable insert. The slots and inserts are fitted with fixing screws for easy fixation. While this device achieves ease of disassembly and cleaning through its structural design, its relatively simple twin-screw configuration may lead to uneven material mixing during the mixing process. Specifically, when two different materials are added to the spiral roller section simultaneously, they may not enter the mixing area synchronously and evenly, resulting in an imbalance in the material ratio in certain areas.

[0004] Therefore, to address the above problems, a twin-screw extruder is proposed that can coordinate the feeding of different materials and facilitate thorough mixing of the materials. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, the present invention provides a twin-screw extruder that facilitates thorough mixing of materials.

[0006] The technical solution is as follows: A twin-screw extruder for facilitating thorough mixing of materials includes a mounting frame, a cover plate, a feeding hopper, a motor, a feeding roller, a material distribution plate, a vibrator, a feeding cylinder, and electric heating tubes. The mounting frame has two compartments, left and right. A feeding cylinder is located in the left compartment, and electric heating tubes for heating the material are spaced apart on the feeding cylinder. A cover plate is also located on the top of the mounting frame, with a gap between the cover plate and the other side wall of the mounting frame. Two feeding hoppers for discharging material are symmetrically connected at this gap, with the feeding hoppers facing towards the mounting frame. The frame is tilted, and a motor is symmetrically installed on one side of the mounting frame. The output end of each motor is connected to a feeding roller that passes through the mounting frame. Both feeding rollers are located inside the feeding cylinder, and their ends are rotatably connected to the other side wall of the mounting frame. In the right compartment of the mounting frame, a material distribution plate is symmetrically and tilted, which is consistent with the layout of the two hoppers. The bottom of the material distribution plate is equipped with a vibrator for vibrating and dispersing the material. The two material distribution plates are spaced apart by tilting downwards to provide movement space for the falling material.

[0007] Furthermore, it also includes baffles and driving components. The cover plate is symmetrically equipped with driving components with telescopic ends facing the hopper. Both driving components have sliding baffles that pass through the hopper on the same side connected to their telescopic ends for intermittent feeding of falling materials.

[0008] Furthermore, the driving component is an electric actuator.

[0009] Furthermore, it also includes an extrusion cylinder, a second motor, and a second feeding roller. An extrusion cylinder is connected to the left end of the mounting frame, and a second motor is installed on one side of the extrusion cylinder. The output end of the second motor is connected to a second feeding roller located inside the extrusion cylinder for further mixing of materials.

[0010] Furthermore, it also includes valves, with a valve at the end of the extrusion cylinder for controlling material discharge.

[0011] Furthermore, the extrusion cylinder consists of a hollow cylinder equipped with a second feed roller and a hollow cone with a valve installed, with an open partition between them for controlling the mixing and discharge timing of the material.

[0012] The beneficial effects are as follows: This utility model, through the carefully designed material distribution plate and the vibrator equipped at the bottom, ensures that the material is sufficiently vibrated and loosened before reaching the mixing zone. This design not only effectively prevents the problem of material blockage, but also ensures that different types of materials can fall synchronously and evenly, thereby achieving initial mixing. Subsequently, the material enters the feeding cylinder and is heated by the electric heating tube to reduce the viscosity of the material and melt it, ensuring that the feeding roller can transport and mix the materials more smoothly, ultimately ensuring that the material achieves a more thorough and uniform mixing effect. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0014] Figure 2 This is a three-dimensional structural cross-sectional view of the components of this utility model, including the motor, the feeding roller, and the material distribution plate.

[0015] Figure 3 This is a three-dimensional structural cross-sectional view of the electric push rod, baffle, and feeding cylinder of this utility model.

[0016] Figure 4 This is a three-dimensional structural diagram of the extrusion cylinder, motor 2, feeding roller 2, and valve of this utility model.

[0017] Figure 5 This is a three-dimensional structural cross-sectional view of the mounting frame, hopper, material distribution plate, and vibrator of this utility model.

[0018] The parts and their numbers in the diagram are as follows: 1. Mounting frame, 2. Cover plate, 3. Feed hopper, 4. Motor 1, 5. Feed roller 1, 6. Material distribution plate, 7. Vibrator, 8. Electric push rod, 9. Baffle, 10. Feeding cylinder, 11. Heating element, 12. Extrusion cylinder, 13. Motor 2, 14. Feed roller 2, 15. Valve. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the accompanying drawings.

[0020] Example: A twin-screw extruder that facilitates thorough mixing of materials, such as... Figures 1-3 and Figure 5As shown, the device includes a mounting frame 1, a cover plate 2, a hopper 3, a motor 4, a feeding roller 5, a material distribution plate 6, a vibrator 7, a feeding cylinder 10, and an electric heating element 11. The mounting frame 1 is hollow and has two compartments arranged inside, left and right, separated by a longitudinal plate. The lower part of the plate is open to allow the two compartments to communicate. The feeding cylinder 10 is installed in the left compartment and is arranged horizontally to provide an independent mixing space for the conveyed material. Furthermore, electric heating tubes 11 for heating materials are spaced apart at the top of the feeding cylinder 10 to heat the materials, reduce their viscosity, or melt them, making them easier to convey and mix. A cover plate 2 is also provided on the top of the mounting frame 1, with a gap between the cover plate 2 and the right side wall of the mounting frame 1. Two symmetrically connected feeding hoppers 3 are positioned at the gap, tilted towards the mounting frame 1. Motors 4 are symmetrically fixedly installed on the right side of the mounting frame 1. Both motors 4 have a feeding roller 5 connected to their output ends, which passes through the mounting frame 1. Both feeding rollers 5 are located inside the feeding cylinder 10, and their ends are rotatably connected to the other side wall of the mounting frame 1. The motor 4 drives the corresponding feeding roller 5 to rotate, using a spiral rotation to push the material to the left. During the pushing process, the material is stirred and mixed to enhance the mixing effect. In the right compartment of the mounting frame 1, a loose material plate 6 is symmetrically and inclined, which is consistent with the layout of the two hoppers 3. The two loose material plates 6 are inclined relative to each other, so that the loose material plates 6 on both sides are in an inverted octagon shape. The two loose material plates 6 are spaced apart by tilting downwards to provide movement space for the falling material. At the bottom of the loose material plates 6, there are also vibrators 7 for vibrating and dispersing the material. The material can be vibrated before it reaches the mixing zone to loosen the material and prevent clumping. At the same time, it can ensure that different types of materials fall synchronously and evenly to achieve preliminary mixing.

[0021] Specifically, through the coordinated operation of the aforementioned components and the combined operation of the two feeding rollers 5, a double-helix conveying and extrusion of materials is achieved, resulting in more thorough and uniform mixing of the materials. Simultaneously, the material distribution plate 6 and vibrator 7 further optimize the mixing process. After the material falls from the hopper 3 onto the distribution plate 6, the vibrator 7 vibrates and disperses the material, causing the distribution plate 6 to slide and vibrate, allowing the material to fall along its inclined path for initial mixing. In this way, the two materials entering the feeding rollers 5 undergo further consolidation and mixing, optimizing and improving the mixing process.

[0022] In addition, the tilt angle of the bulk material plate 6 and the vibration frequency of the vibrator 7 can be adjusted according to the material characteristics to adapt to the mixing requirements of different materials, further improving the mixing efficiency and uniformity. Thus, through this design, the device not only improves the mixing quality, but also enhances the flexibility and adaptability of operation.

[0023] like Figure 2 and Figure 3 As shown, it also includes baffles 9 and driving components. The cover plate 2 is symmetrically equipped with driving components whose telescopic ends face the hopper 3. In this embodiment, the driving component is an electric push rod 8. The telescopic ends of the two driving components are connected to sliding baffles 9 that pass through the hopper 3 on the same side for intermittent feeding of falling materials. By driving the baffles 9 with the electric push rod 8, the hopper 3 can be opened and closed intermittently to control the flow rate of materials and ensure that materials can enter the mixing zone according to the set ratio and speed.

[0024] like Figure 3 and Figure 4 As shown, it also includes an extrusion cylinder 12, a second motor 13, and a second feeding roller 14. An extrusion cylinder 12 is connected to the left end of the mounting frame 1. A second motor 13 is installed on one side of the extrusion cylinder 12. The output end of the second motor 13 is connected to the second feeding roller 14 located inside the extrusion cylinder 12 to further mix the materials, perform final extrusion and mixing of the materials, and ensure that the materials reach the ideal mixing state.

[0025] like Figure 4 As shown, it also includes a valve 15. The end of the extrusion cylinder 12 is provided with a valve 15 for controlling the material discharge process. The valve 15 can adjust the extrusion timing and amount of the material as needed.

[0026] Specifically, the extrusion cylinder 12 is mainly composed of a hollow cylinder equipped with a second feeding roller 14 and a hollow cone equipped with a valve 15, with an open partition between them. The design of the hollow cylinder allows the material to flow freely within it while maintaining the stability and durability of the structure. The design of the hollow cone at the end helps the material form a uniform flow line during the extrusion process, reducing material accumulation and blockage, optimizing the material discharge path, thereby improving mixing efficiency and extrusion quality.

[0027] When using this device, firstly, the two materials to be mixed are added to the corresponding two feeding hoppers 3. Next, the electric push rod 8 controls the movement of the baffle 9, causing it to slide continuously within each feeding hopper 3, thus intermittently opening and closing the feeding hoppers 3. This precisely controls the flow rate and speed of the materials, ensuring that the materials enter the mounting frame 1 evenly. Immediately afterwards, the materials fall onto the lower distribution plate 6. At this point, the vibrator 7 starts working, applying vibration to the distribution plate 6 to cause it to slide slightly, loosening and evenly distributing the materials. Then, the materials on both sides are guided to gradually fall due to the tilting trend. Due to the frequency vibration provided by the vibrator 7, the materials on both sides can fall synchronously and stably, achieving initial mixing in this process. Afterwards, the motor 4 drives the feeding roller 5 to rotate. The relative movement between the two feeding rollers 5 thoroughly mixes the materials while they are being transported, further improving the mixing effect. Simultaneously, the heating element 11 moderately heats the material during transport to reduce its viscosity or melt it, making it easier to convey, mix, and extrude. After thorough mixing, the material is fed into the extrusion cylinder 12 located at the left end of the mounting frame 1. Here, the motor 13 drives the feeding roller 14 to further extrude and mix the material until it reaches the ideal mixing state. Finally, the thoroughly mixed material can be extruded through the valve 15 at the end of the extrusion cylinder 12, completing the entire mixing process.

[0028] Although the present invention has been described with reference to exemplary embodiments, it should be understood that the present invention is not limited to the disclosed exemplary embodiments. The scope of the following claims should be given the broadest interpretation in order to cover all variations and equivalent structures and functions.

Claims

1. A twin-screw extruder for facilitating thorough mixing of materials, comprising a mounting frame (1), characterized in that: It also includes a cover plate (2), a hopper (3), a motor (4), a feeding roller (5), a material distribution plate (6), a vibrator (7), a feeding cylinder (10), and an electric heating tube (11). The mounting frame (1) has two compartments, left and right. The feeding cylinder (10) is installed in the left compartment. The feeding cylinder (10) is equipped with electric heating tubes (11) for heating the material at intervals. A cover plate (2) is also installed on the top of the mounting frame (1). There is a gap between the cover plate (2) and the other side wall of the mounting frame (1). Two hoppers (3) for discharging material are symmetrically connected at the gap. The hoppers (3) are inclined towards the mounting frame (1). Furthermore, a motor (4) is symmetrically installed on one side of the mounting frame (1). The output end of the motor (4) is connected to a feeding roller (5) that passes through the mounting frame (1). Both feeding rollers (5) are located inside the feeding cylinder (10), and their ends are rotatably connected to the other side wall of the mounting frame (1). In the right compartment of the mounting frame (1), a material distribution plate (6) is symmetrically and inclinedly slidably arranged, which is consistent with the layout of the two hoppers (3). The bottom of the material distribution plate (6) is provided with a vibrator (7) for vibrating and dispersing the material. The two material distribution plates (6) are spaced apart by tilting downwards to provide moving space for the falling material.

2. A twin-screw extruder according to claim 1, which facilitates thorough mixing of materials, characterized in that: It also includes a baffle (9) and a drive component. The cover plate (2) is symmetrically equipped with a drive component with its telescopic end facing the hopper (3). Both of the drive components have a sliding baffle (9) that passes through the hopper (3) on the same side for intermittent feeding of falling materials.

3. A twin-screw extruder according to claim 2, which facilitates thorough mixing of materials, characterized in that: The driving component is an electric push rod (8).

4. A twin-screw extruder according to claim 3, which facilitates thorough mixing of materials, characterized in that: It also includes an extrusion cylinder (12), a second motor (13) and a second feeding roller (14). The left end of the mounting frame (1) is connected to an extrusion cylinder (12). A second motor (13) is installed on one side of the extrusion cylinder (12). The output end of the second motor (13) is connected to a second feeding roller (14) located inside the extrusion cylinder (12) for further mixing of materials.

5. A twin-screw extruder according to claim 4, which facilitates thorough mixing of materials, characterized in that: It also includes a valve (15), and the end of the extrusion cylinder (12) is provided with a valve (15) for controlling the material discharge.

6. A twin-screw extruder according to claim 5, which facilitates thorough mixing of materials, characterized in that: The extrusion cylinder (12) consists of a hollow cylinder equipped with a second feed roller (14) and a hollow cone equipped with a valve (15), with an open partition between them for controlling the mixing and discharge timing of the material.

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