Continuous microwave drying equipment for regenerated plastic particles

Abstract

The continuous microwave drying equipment comprises a base, a conveying frame and microwave dryers, the conveying frame is arranged at the top of the base, a plurality of sets of microwave dryers are installed at the top of the conveying frame, supports are fixedly installed on the two sides of the top of the conveying frame and located on the inner sides of the microwave dryers, and sliding grooves are formed in the supports. A driving wheel is movably mounted below the inner side of the sliding block through a rotating shaft, a driven wheel is arranged above the inner side of the sliding block, a roller is movably mounted on the inner side of the driven wheel, and a plurality of groups of shifting rods are mounted on the outer wall of the roller in a surrounding manner. The roller and the deflector rod can be driven by the driving wheel and the driven wheel to turn over particles, so that all-directional uniform heating of materials is ensured, efficient, continuous and uniform drying of regenerated plastic particles is realized, and the energy consumption and the labor intensity of workers are reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of recycled plastic processing equipment, and in particular to a continuous microwave drying equipment for recycled plastic granules. Background Technology

[0002] With environmental awareness growing and the demand for resource recycling becoming increasingly urgent, the recycled plastic pellet industry is developing rapidly. As a crucial product of plastic recycling, the processing quality of recycled plastic pellets directly affects the performance and applications of subsequent plastic products. In the production process of recycled plastic pellets, drying is an essential and critical step; the effectiveness of drying significantly impacts the quality, shelf life, and subsequent processing and molding of the pellets.

[0003] With the development of microwave technology, microwave drying has been gradually applied in many fields due to its advantages such as fast heating speed, high energy utilization rate, and uniform drying. However, there is still room for improvement in its application in the drying of recycled plastic granules. Existing microwave drying equipment lacks an effective combination of granule turning and conveying in its structural design, resulting in the material not receiving sufficient microwave radiation during the drying process, thus affecting the drying effect.

[0004] Therefore, how to provide a continuous microwave drying equipment for recycled plastic granules is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] One objective of this invention is to provide a continuous microwave drying device for recycled plastic granules. This invention can use a drive wheel and a driven wheel to drive a drum and a lever to turn the granules, ensuring that the material is heated evenly from all directions, thereby achieving efficient, continuous and uniform drying of recycled plastic granules, reducing energy consumption and manual labor intensity.

[0006] According to an embodiment of the present invention, a continuous microwave drying device for recycled plastic granules includes a base, a conveyor frame, and microwave dryers. The base is provided with a conveyor frame on top, and several sets of microwave dryers are installed on top of the conveyor frame. Supports are fixedly installed on both sides of the top of the conveyor frame and inside the microwave dryers. A sliding groove is opened in the support, and a slider is slidably installed in the sliding groove. A drive wheel is movably installed on the lower inner side of the slider via a rotating shaft. A driven wheel is provided on the upper inner side of the slider, and a roller is movably installed on the inner side of the driven wheel. Several sets of levers are installed around the outer wall of the roller.

[0007] Furthermore, a conveyor belt is provided inside the conveyor frame, and the drive wheel is positioned above the conveyor belt and is in contact with the conveyor belt.

[0008] Furthermore, the driven wheel is positioned above the drive wheel, and the driven wheel is in contact with the drive wheel.

[0009] Furthermore, a spring is fixedly installed on the top of the slider, and the top of the spring is fixedly connected to the top of the inner side of the slide groove.

[0010] Furthermore, the microwave dryer has an inspection port on its side wall, and the inspection port is hinged to the outer shell of the microwave dryer.

[0011] Furthermore, the microwave dryer is provided with an air outlet at the top, and the air outlet is connected to the internal air duct of the microwave dryer.

[0012] Furthermore, a control box is provided on the top of the conveyor rack and in front of the microwave dryer, and an operation panel is provided on the side wall of the control box.

[0013] Furthermore, several sets of microwave dryers are distributed sequentially along the conveying direction of the conveyor frame to ensure the uniformity of drying of recycled plastic particles.

[0014] Furthermore, the conveyor belt is made of Teflon and has an anti-slip texture on its surface to enhance friction with the drive wheel.

[0015] Furthermore, the control box is equipped with a PLC controller and a touch screen on the operation panel, which can display and adjust the running speed of the conveyor belt, the power of the microwave dryer, and the operating status of each component in real time. The control box is also equipped with temperature and humidity sensors, which can automatically adjust the drying parameters based on the detection data.

[0016] The beneficial effects of this utility model are:

[0017] 1. In this utility model, the drive wheel and driven wheel drive the drum and lever to rotate, which can continuously turn the plastic granules during the drying process, ensuring that each plastic granule can receive microwave radiation fully and evenly, avoiding the phenomenon of insufficient or excessive drying in some areas, significantly improving the uniformity and consistency of drying, and ensuring the drying quality of recycled plastic granules.

[0018] 2. The design of the spring and slider in this utility model enables the drive wheel to adapt to slight swaying or tension changes of the conveyor belt, always maintaining good contact with the conveyor belt, ensuring stable material turning by the lever, maintaining the stability of equipment operation, and reducing the probability of failure caused by poor contact of components. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0020] Figure 1This is a schematic diagram of the overall structure of the continuous microwave drying equipment for recycled plastic granules proposed in this utility model.

[0021] Figure 2 This is a schematic diagram of the dismantling structure of the microwave dryer in the continuous microwave drying equipment for recycled plastic granules proposed in this utility model.

[0022] Figure 3 This is a schematic diagram of the overall structure of the turning structure of the continuous microwave drying equipment for recycled plastic granules proposed in this utility model.

[0023] Figure 4 This is a schematic diagram showing the disassembled structure of the turning mechanism in the continuous microwave drying equipment for recycled plastic granules proposed in this utility model.

[0024] In the diagram: 1. Base; 2. Conveyor frame; 3. Conveyor belt; 4. Microwave dryer; 5. Control box; 6. Support; 7. Slide rail; 8. Slider; 9. Rotary shaft; 10. Roller; 11. Spring; 12. Drive wheel; 13. Driven wheel; 14. Lever; 15. Inspection port; 16. Air outlet. Detailed Implementation

[0025] To make the technical means and objectives and effects of this utility model easier to understand, the embodiments of this utility model will be described in detail below with reference to specific figures.

[0026] It should be noted that all directional and positional terms used in this utility model, such as "upper," "lower," "front," "rear," "inner," and "outer," are only used to explain the relative positional relationships and connection arrangements between components in a specific state (as shown in the accompanying drawings). They are merely for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, descriptions involving "first," "second," etc., in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.

[0027] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0029] like Figure 1-4 As shown, this utility model discloses a continuous microwave drying device for recycled plastic granules, including a base 1, a conveyor frame 2, and microwave dryers 4. The base 1 provides stable support for the entire device, and the conveyor frame 2 is installed on its top. A conveyor belt 3 is installed inside the conveyor frame 2. The conveyor belt 3 is made of Teflon material, which has high temperature resistance and corrosion resistance, and its surface is textured with anti-slip material to enhance friction with the drive wheel 12. Several sets of microwave dryers 4 are installed on the top of the conveyor frame 2. These microwave dryers 4 are distributed sequentially along the conveying direction of the conveyor frame 2 to ensure that the recycled plastic granules are dried uniformly during the conveying process.

[0030] Among them, the microwave dryer 4 is a tunnel-type microwave dryer, which is tunnel-shaped and composed of multiple microwave cavities connected together. It is equipped with a conveyor belt 3, so that the material can continuously pass through the cavity and receive microwave radiation during the movement to achieve continuous drying.

[0031] Support brackets 6 are fixedly installed on both sides of the top of the conveyor frame 2 and inside the microwave dryer 4. A sliding groove 7 is provided within the support bracket 6, and a slider 8 is slidably installed within the groove 7. A spring 11 is fixedly installed on the top of the slider 8, and the top of the spring 11 is fixedly connected to the top of the inner side of the groove 7. The spring 11 allows the slider 8 to slide elastically within the groove 7. A drive wheel 12 is movably installed on the lower inner side of the slider 8 via a rotating shaft 9. The drive wheel 12 is positioned above and in contact with the conveyor belt 3. When the conveyor belt 3 runs, it drives the drive wheel 12 to rotate synchronously. A driven wheel 13 is positioned above the inner side of the slider 8, above the drive wheel 12, and in contact with it. Thus, when the drive wheel 12 rotates, it drives the driven wheel 13 to rotate. A roller 10 is movably installed inside the driven wheel 13. Several sets of levers 14 are installed around the outer wall of the roller 10. When the driven wheel 13 rotates, it will drive the roller 10 and the levers 14 to rotate together, thereby turning the plastic granules.

[0032] The microwave dryer 4 has an inspection port 15 on its side wall. The inspection port 15 is hinged to the outer shell of the microwave dryer 4, allowing for easy inspection and maintenance of the internal components. The microwave dryer 4 also has an air outlet 16 on its top, which connects to the internal air duct. During the drying process, water vapor and other moisture generated can be discharged through the air outlet 16.

[0033] A control box 5 is located on top of the conveyor frame 2 and in front of the microwave dryer 4. An operation panel is mounted on the side wall of the control box 5. The control box 5 houses a PLC controller, and the operation panel features a touchscreen display. Operators can use the touchscreen to view and adjust the real-time speed of the conveyor belt 3, the power of the microwave dryer 4, and the operating status of each component. Furthermore, the control box 5 also contains temperature and humidity sensors. These sensors monitor temperature and humidity data in real-time during the drying process, and the PLC controller automatically adjusts the drying parameters based on the detected data to ensure the stability and consistency of the drying effect.

[0034] During installation, first, place the base 1 stably on the work site, then install the conveyor frame 2 on top of the base 1, ensuring the conveyor frame 2 is securely installed. Next, install the conveyor belt 3 inside the conveyor frame 2 and adjust the tension of the conveyor belt 3 to ensure smooth operation. Then, install the microwave dryer 4 on top of the conveyor frame 2, arranging several sets of microwave dryers 4 sequentially along the conveying direction. Next, install brackets 6 on both sides of the top of the conveyor frame 2, inside the microwave dryers 4. Install sliders 8 in the grooves 7 of the brackets 6, and connect springs 11 between the top of the slider 8 and the top of the inner side of the groove 7. Install the drive wheel 12 below the inner side of the slider 8 via a rotating shaft 9, ensuring good contact with the conveyor belt 3; install the driven wheel 13 above the inner side of the slider 8, ensuring good contact with the drive wheel 12, and install a roller 10 and a lever 14 inside the driven wheel 13. Finally, install the control box 5 and connect the electrical wiring of each component.

[0035] When drying recycled plastic granules is required, first start the equipment via the control panel of the control box 5, and set parameters such as the running speed of the conveyor belt 3 and the power of the microwave dryer 4. Place the recycled plastic granules to be dried on the conveyor belt 3, and the conveyor belt 3 starts running, moving the recycled plastic granules towards the microwave dryer 4. During the operation of the conveyor belt 3, the drive wheel 12 in contact with the conveyor belt 3 will rotate, which in turn drives the driven wheel 13 in contact with it to rotate, and the driven wheel 13 in turn drives the roller 10 and the lever 14 to rotate. The rotation of the lever 14 can turn the recycled plastic granules on the conveyor belt, so that the plastic granules can receive microwave radiation emitted by the microwave dryer 4 more evenly, improving the drying effect.

[0036] After recycled plastic granules enter the microwave dryer 4, the microwave energy generated by the dryer penetrates the granules, causing the water molecules inside to vibrate and generate heat, thus drying the granules. During the drying process, the generated water vapor and other moisture are discharged from the equipment through the air outlet 16. Temperature and humidity sensors monitor the temperature and humidity data in real time during the drying process and transmit the data to the PLC controller. The PLC controller automatically adjusts parameters such as the power of the microwave dryer 4 and the running speed of the conveyor belt 3 based on this data to ensure the stability and consistency of the drying effect.

[0037] When microwave dryer 4 needs inspection or maintenance, the internal components can be inspected and repaired by opening the inspection port 15. After the equipment has finished operating, the equipment can be stopped via the operation panel of the control box 5.

[0038] As a preferred example of this application, the spring 11 is configured to ensure that the drive wheel 12 always maintains good contact with the conveyor belt 3, and even if the conveyor belt 3 experiences slight shaking or changes in tension, the drive wheel 12 can still rotate normally, thereby ensuring that the lever 14 can stably turn the recycled plastic granules.

[0039] As a preferred example of this application, the arrangement of several groups of microwave dryers 4 along the conveying direction of the conveyor frame 2 enables the recycled plastic particles to be continuously and uniformly dried during the conveying process, avoiding the occurrence of localized insufficient drying.

[0040] As a preferred example of this application, the conveyor belt 3 is made of Teflon material and has an anti-slip texture, which not only ensures the high temperature resistance and corrosion resistance of the conveyor belt 3, but also enhances the friction between the conveyor belt 3 and the drive wheel 12, ensuring that the drive wheel 12 can rotate stably as the conveyor belt 3 runs.

[0041] As a preferred example of this application, the PLC controller installed in the control box 5 and the touch display screen on the operation panel, along with the temperature sensor and humidity sensor, enable automated control of the equipment and real-time adjustment of drying parameters, improving the stability and consistency of the drying effect, while also reducing the labor intensity of the operators.

[0042] As a preferred example of this application, the access port 15 is hinged and movably connected to the outer shell of the microwave dryer 4, which makes it easier to open and close the access port 15, facilitates the inspection and maintenance of the internal components of the microwave dryer 4, and improves the maintainability of the equipment.

[0043] 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 continuous microwave drying equipment for recycled plastic granules, characterized in that, The device includes a base (1), a conveyor frame (2), and a microwave dryer (4). The base (1) is provided with a conveyor frame (2) on top. Several sets of microwave dryers (4) are installed on the top of the conveyor frame (2). Supports (6) are fixedly installed on both sides of the top of the conveyor frame (2) and inside the microwave dryer (4). A sliding groove (7) is provided in the support (6). A slider (8) is slidably installed in the sliding groove (7). A drive wheel (12) is movably installed on the lower inner side of the slider (8) through a rotating shaft (9). A driven wheel (13) is provided on the upper inner side of the slider (8). A roller (10) is movably installed on the inner side of the driven wheel (13). Several sets of levers (14) are installed around the outer wall of the roller (10).

2. The continuous microwave drying equipment for recycled plastic granules according to claim 1, characterized in that, The conveyor frame (2) is provided with a conveyor belt (3), and the drive wheel (12) is located above the conveyor belt (3) and is in contact with the conveyor belt (3).

3. The continuous microwave drying equipment for recycled plastic granules according to claim 1, characterized in that, The driven wheel (13) is positioned above the drive wheel (12), and the driven wheel (13) is in contact with the drive wheel (12).

4. The continuous microwave drying equipment for recycled plastic granules according to claim 1, characterized in that, A spring (11) is fixedly installed on the top of the slider (8), and the top of the spring (11) is fixedly connected to the top of the inner side of the slide groove (7).

5. The continuous microwave drying equipment for recycled plastic granules according to claim 1, characterized in that, The microwave dryer (4) has an inspection port (15) on its side wall, and the inspection port (15) is movably connected to the outer shell of the microwave dryer (4) by a hinge.

6. The continuous microwave drying equipment for recycled plastic granules according to claim 1, characterized in that, The microwave dryer (4) is provided with an air outlet (16) at the top, and the air outlet (16) is connected to the internal air duct of the microwave dryer (4).

7. The continuous microwave drying equipment for recycled plastic granules according to claim 1, characterized in that, A control box (5) is provided on the top of the conveyor (2) and in front of the microwave dryer (4), and an operation panel is provided on the side wall of the control box (5).

8. The continuous microwave drying equipment for recycled plastic granules according to claim 1, characterized in that, Several sets of microwave dryers (4) are distributed sequentially along the conveying direction of the conveyor frame (2) to ensure the uniformity of drying of recycled plastic particles.

9. The continuous microwave drying equipment for recycled plastic granules according to claim 2, characterized in that, The conveyor belt (3) is made of Teflon and has anti-slip texture on its surface to enhance friction with the drive wheel (12).

10. The continuous microwave drying equipment for recycled plastic granules according to claim 7, characterized in that, The control box (5) is equipped with a PLC controller and a touch screen on the operation panel. The PLC controller can display and adjust the running speed of the conveyor belt (3), the power of the microwave dryer (4), and the operating status of each component in real time. The control box (5) is also equipped with a temperature sensor and a humidity sensor, which can automatically adjust the drying parameters according to the detection data.

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