A dewatering drying device for plastic recycling

Abstract

The utility model discloses a dehydration drying device for plastic recycling, including the box, the box upper end's right side established feed inlet inside hinged has the box door, the box outer arc surface's downside established discharge gate inside hinged has the sealing door, the upper end of box is provided with the protective cover, the downside of box inside is equipped with electric heating wire still includes mixing mechanism, mixing mechanism: it includes output rod, drive gear, gear no.

Description

Technical Field

[0001] This utility model relates to the field of plastic recycling technology, specifically a dehydration and drying device for plastic reuse. Background Technology

[0002] Dehydration and drying equipment for plastic recycling is a crucial piece of equipment in the plastic recycling and reprocessing process. It primarily removes moisture from plastic granules or fragments, ensuring the plastic reaches an ideal dry state during subsequent processing, thereby improving product quality and production efficiency. The existing technology is authorized by publication number CN 213860162. U's patent discloses a drying device for plastic particle production, including a drying chamber and a reflux device. The reflux device is welded to the outer wall of one side of the drying chamber. The top of the drying chamber has a connection hole, and a feed hopper is welded to the connection hole. A stirring shaft is installed inside the drying chamber, and stirring rods are welded at equal intervals along the circumference of the stirring shaft. A leak-proof mesh is welded to the inner wall of the drying chamber, and the leak-proof mesh is located below the stirring shaft. A heating tube is welded to the inner wall of the drying chamber. During use, the device dries the plastic particles by supplying hot air from below and also stirs them with the stirring rods. However, at the beginning of the drying process, the plastic particles carry a relatively high amount of moisture. During the stirring process, some plastic particles adhere to the inner wall of the container. The plastic particles adhering to the inner wall cannot fully contact the hot air, which leads to uneven drying and affects the quality of subsequent products. Therefore, we propose a dehydration and drying device for plastic recycling. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a dehydration and drying device for plastic recycling. Through the cooperation of the drive gear and the gear-adjustment gear, the scraper and the stirring fan blade can be driven to rotate simultaneously. The scraper can scrape off the plastic stuck to the inner wall of the box, and the rapid rotation of the scraper can also assist the stirring work of the stirring fan blade. This ensures the cleanliness of the inner wall of the box and improves the dehydration effect, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a dehydration and drying device for plastic recycling, comprising a box body, a door hinged to the inlet on the right side of the upper end of the box body, a sealing door hinged to the discharge outlet on the lower side of the outer arc surface of the box body, a protective cover provided at the upper end of the box body, an electric heating wire provided on the lower side of the inner part of the box body, and a mixing mechanism.

[0005] The mixing mechanism includes an output rod, a drive gear, a first gear, a scraper, and a stirring assembly. The output rod is rotatably connected to the left side of the top wall of the protective cover. Drive gears are respectively provided on the upper and lower sides of the outer arc surface of the output rod. A first gear is provided on the right side inside the protective cover, and the first gear meshes with the lower drive gear. A scraper is provided inside the box, and the stirring assembly is located inside the box. Through the cooperation of the drive gear, the first gear, and the adjusting gear, the scraper and the stirring fan blade can be driven to rotate simultaneously. The scraper can scrape off the plastic stuck to the inner wall of the box, and the rapid rotation of the scraper can also assist the stirring fan blade in stirring, ensuring the cleanliness of the inner wall of the box while improving the dehydration effect.

[0006] Furthermore, it also includes a controller, which is located outside the enclosure. The controller's input terminal is electrically connected to an external power source and can regulate the electrical components inside the device.

[0007] Furthermore, the mixing mechanism also includes a rotating cylinder and fixed plates. The rotating cylinder is rotatably connected to the middle of the top wall of the box. A gear is provided on the upper side of the outer arc surface of the rotating cylinder, and fixed plates are provided on the lower side of the outer arc surface of the rotating cylinder. Scrapers are provided at the lower ends of the four fixed plates. The ends of the four scrapers away from the center of the box are in contact with the inner wall of the box, which can drive the scrapers to rotate.

[0008] Furthermore, the stirring assembly also includes a mounting rod, stirring blades, gear two, an adjusting rod, and an adjusting gear. The mounting rod is rotatably connected to the inside of the rotating cylinder. Stirring blades are respectively provided on the lower side of the outer arc surface of the mounting rod, and gear two is provided on the upper side of the outer arc surface of the mounting rod. The adjusting rod is rotatably connected to the middle of the top wall of the protective cover. The adjusting rod is located between the right side of the output rod and the left side of the mounting rod. An adjusting gear is provided on the lower side of the outer arc surface of the adjusting rod. The driving gear and gear two on the upper side are both meshed with the adjusting gear, which can stir the plastic.

[0009] Furthermore, a servo motor is provided in the middle of the upper end of the protective cover. The lower end of the output shaft of the servo motor is fixedly connected to the upper end of the output rod. The input end of the servo motor is electrically connected to the output end of the controller, which can drive the output rod to rotate.

[0010] Furthermore, temperature detectors are respectively installed on the upper and lower sides of the outer arc surface of the enclosure. The probes at the rear ends of the two sets of temperature detectors are located inside the enclosure. The temperature detectors are bidirectionally electrically connected to the controller, enabling them to detect the temperature inside the enclosure.

[0011] Furthermore, a cavity is provided on the lower side of the box body, which is located below the sealed door and the temperature detector on the lower side. A fan is provided in the middle of the bottom wall of the cavity, and an electric heating wire is provided on the upper side of the cavity. An air outlet is provided at the upper end of the fan. Evenly distributed ventilation holes are provided in the middle of the top wall of the cavity. The input end of the fan is electrically connected to the output end of the controller, which can increase the air flow inside the box.

[0012] Furthermore, filters are installed in the air inlet at the lower end of the fan and the air outlet at the upper end of the housing to prevent external debris from entering the cavity and to prevent plastic from flying out of the housing.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This dehydration and drying device for plastic recycling has the following advantages:

[0014] By coordinating the drive gear and the adjustment gear, the scraper and the stirring fan blades can be rotated simultaneously. The scraper can scrape off the plastic stuck to the inner wall of the chamber, and the rapid rotation of the scraper can also assist the stirring work of the stirring fan blades, ensuring the cleanliness of the inner wall of the chamber while improving the dehydration effect. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the front sectional structure of the present invention;

[0017] Figure 3 This is a schematic diagram of the upper sectional structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the internal structure of the cavity in this utility model;

[0019] Figure 5 This is a schematic diagram of the internal structure of the protective cover of this utility model;

[0020] Figure 6 This is a schematic diagram of the internal structure of the rotating cylinder of this utility model;

[0021] Figure 7 This is an enlarged structural diagram of point A in this utility model.

[0022] In the diagram: 1. Box body, 2. Controller, 3. Box door, 4. Sealed door, 5. Protective cover, 6. Mixing mechanism, 61. Output rod, 62. Drive gear, 63. Rotating cylinder, 64. Gear one, 65. Fixing plate, 66. Scraper, 67. Stirring assembly, 671. Mounting rod, 672. Stirring fan blade, 673. Gear two, 674. Adjusting rod, 675. Adjusting gear, 7. Servo motor, 8. Cavity, 9. Fan, 10. Electric heating wire, 11. Filter screen, 12. Temperature detector, 13. Vent hole. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1-7 This embodiment provides a technical solution: a dehydration and drying device for plastic recycling, including a box body 1, a box door 3 hinged to the feed inlet on the right side of the upper end of the box body 1, a sealing door 4 hinged to the discharge outlet on the lower side of the outer arc surface of the box body 1, a protective cover 5 provided at the upper end of the box body 1, and an electric heating wire 10 provided on the lower side inside the box body 1. The operator first opens the box door 3, and then pours the plastic to be dehydrated into the interior of the box body 1 (the size of the plastic fragments is larger than the pore size of the vent 13 and the filter screen 11 on the upper side). Since the capacity of the box body 1 is fixed, the operator needs to record the amount of plastic added during the process of adding plastic. The operator judges the remaining space inside the box body 1 by recording. After adding enough plastic, the operator closes the box door 3 again (the locking method when the box door 3 is closed is the commonly used technology of door lock and box connection in the prior art). The electric heating wire 10 is a nickel-chromium alloy heating wire with high resistivity, which can heat up quickly after being energized. It also includes a mixing mechanism 6.

[0025] Mixing mechanism 6 includes an output rod 61, a drive gear 62, a first gear 64, a scraper 66, and a stirring assembly 67. The output rod 61 is rotatably connected to the left side of the top wall of the protective cover 5. Drive gears 62 are respectively provided on the upper and lower sides of the outer arc surface of the output rod 61. A first gear 64 is provided on the right side inside the protective cover 5, and the first gear 64 meshes with the lower drive gear 62. A scraper 66 is provided inside the housing 1. The stirring assembly 67 is located inside the housing 1. The mixing mechanism 6 also includes a rotating cylinder 63 and fixed plates 65. The rotating cylinder 63 is rotatably connected to the middle of the top wall of the housing 1. A first gear 64 is provided on the upper side of the outer arc surface of the rotating cylinder 63, and fixed plates 65 are respectively provided on the lower side of the outer arc surface of the rotating cylinder 63. The four fixed plates 65 The lower end of each of the four scrapers 66 is provided with a scraper 66. The end of each scraper 66 away from the center of the box 1 is in contact with the inner wall of the box 1. The stirring assembly 67 also includes a mounting rod 671, a stirring blade 672, a gear 673, an adjusting rod 674, and an adjusting gear 675. The mounting rod 671 is rotatably connected to the inside of the rotating cylinder 63. The stirring blade 672 is provided on the lower side of the outer arc surface of the mounting rod 671. The gear 673 is provided on the upper side of the outer arc surface of the mounting rod 671. The adjusting rod 674 is rotatably connected to the middle of the top wall of the protective cover 5. The adjusting rod 674 is located between the right side of the output rod 61 and the left side of the mounting rod 671. The adjusting gear 675 is provided on the lower side of the outer arc surface of the adjusting rod 674. The driving gear 62 and the gear 675 are located on the upper side. Both gears 673 and 674 are meshed with adjusting gears 675. During rotation, output rod 61 drives adjusting gear 675 via upper drive gear 62. Adjusting gear 675, in turn, drives gear 673 via meshing. Gear 673, in turn, drives stirring blade 672 via mounting rod 671, thus stirring the plastic and ensuring even heating. During the rotation of stirring blade 672, output rod 61 drives gear 64 via lower drive gear 62. Gear 64, in turn, drives fixed plate 65 via rotating cylinder 63. Fixed plate 65 then... The scraper 66 rotates, scraping off the plastic adhering to the inner wall of the housing 1. The direction of rotation of the scraper 66 is opposite to that of the stirring blade 672. Since the size of the adjusting gear 675 is smaller than that of the lower drive gear 62, the rotation speed of the scraper 66 is faster than that of the stirring blade 672. The rapid movement of the scraper 66 can bring the plastic adhering to the inner wall back into the stirring area, allowing it to better contact the stirring blade 672. It can simultaneously drive the scraper 66 and the stirring blade 672 to rotate. The scraper 66 can scrape off the plastic adhering to the inner wall of the housing 1, and the rapid rotation of the scraper 66 can also assist the stirring work of the stirring blade 672, ensuring the cleanliness of the inner wall of the housing 1 while improving the dehydration effect.

[0026] It also includes a controller 2, which is located outside the housing 1. The input terminal of the controller 2 is electrically connected to an external power supply and can regulate the electrical components inside the equipment.

[0027] Among them: a servo motor 7 is provided in the middle of the upper end of the protective cover 5. The lower end of the output shaft of the servo motor 7 is fixedly connected to the upper end of the output rod 61. The input end of the servo motor 7 is electrically connected to the output end of the controller 2. Through the control of the controller 2, the servo motor 7 starts to run, and the output shaft of the servo motor 7 drives the output rod 61 to rotate.

[0028] Temperature detectors 12 are installed on the upper and lower sides of the outer arc surface of the housing 1. The probes at the rear ends of the two sets of temperature detectors 12 are located inside the housing 1. The temperature detectors 12 are bidirectionally electrically connected to the controller 2. The two sets of temperature detectors 12 collect the temperature signal of the precursor solution through thermistor sensors. The thermistor sensors convert temperature changes into resistance changes. Then, the temperature detectors 12 convert the resistance values ​​into temperature values ​​through built-in algorithms. The temperature detectors 12 then transmit the calculated data to the controller 2 through the built-in data transmission module. The controller 2 receives the detected data through the built-in serial communication port. Then, the controller 2 takes an intermediate value based on the data provided by the two sets of temperature detectors 12. This intermediate value is the temperature inside the housing 1.

[0029] The chamber 1 has a cavity 8 located on its lower side, below the sealing door 4 and the temperature detector 12. A fan 9 is located in the middle of the bottom wall of the cavity 8, and an electric heating wire 10 is located on the upper side of the cavity 8. An air outlet is located at the top of the fan 9. Evenly distributed ventilation holes 13 are located in the middle of the top wall of the cavity 8. The input end of the fan 9 is electrically connected to the output end of the controller 2. The electric heating wire 10 and the fan 9 start to operate when controlled by the controller 2. When the impeller of the fan 9 rotates, the air is filtered by the filter screen 11 on the lower side and then drawn into the center of the impeller. The air is then thrown to the periphery of the impeller, forming a high-speed airflow. The high-speed airflow enters the interior of the chamber 1 through the ventilation holes 13 and is finally filtered by the filter screen 11 on the upper side before being discharged from the interior of the chamber 1. The electric heating wire 10 can heat the high-speed airflow, thereby improving the drying efficiency of the plastic.

[0030] Among them, filters 11 are installed in the air inlet at the lower end of the fan 9 and the air outlet at the upper end of the housing 1. The lower filter 11 can prevent external debris from entering the cavity 8, and the upper filter 11 can prevent plastic from flying out of the housing 1.

[0031] The working principle of the dehydration and drying device for plastic recycling provided by this utility model is as follows: During the use of the dehydration and drying device for plastic recycling, the operator first opens the box door 3, and then pours the plastic to be dehydrated into the interior of the box 1 (the size of the plastic fragments is larger than the vent hole 13 and the aperture of the filter screen 11 on the upper side). Since the capacity of the box 1 is fixed, the operator needs to record the amount of plastic added during the process of adding plastic. The operator judges the remaining space inside the box 1 by recording. When enough plastic is added, the operator closes the box door 3 again (the locking method when the box door 3 is closed adopts the common technology of connecting the door lock and the box in the prior art). Then, through the control of the controller 2, the electric heating wire 10 and When the fan 9 starts operating, as the impeller of the fan 9 rotates, air is filtered through the lower filter screen 11 before being drawn into the center of the impeller (the lower filter screen 11 prevents external debris from entering the cavity 8). The air is then thrown towards the periphery of the impeller, forming a high-speed airflow. This high-speed airflow enters the housing 1 through the vent 13, and finally passes through the upper filter screen 11 (the upper filter screen 11 prevents plastic from flying out of the housing 1) before being discharged from the housing 1. The electric heating wire 10 heats the high-speed airflow. The electric heating wire 10 is a nickel-chromium alloy heating wire with high resistivity, allowing it to heat up rapidly after being energized, thereby improving the drying efficiency of the plastic. Simultaneously, two sets of temperature detectors 12 use resistance temperature sensors... The device collects the temperature signal of the precursor solution. The resistance temperature sensor converts the temperature change into a change in resistance value. Then, the temperature detector 12 converts the resistance value into a temperature value through its built-in algorithm. The temperature detector 12 then transmits the calculated data to the controller 2 through its built-in data transmission module. The controller 2 receives the detected data through its built-in serial communication port. Then, the controller 2 takes an intermediate value based on the data provided by the two sets of temperature detectors 12. This intermediate value is the temperature inside the chamber 1. The operator needs to control the heating temperature according to the type of plastic. During the drying process of the plastic, the servo motor 7 starts running under the control of the controller 2. The output shaft of the servo motor 7 drives the output rod 61 to rotate. The output rod 61 rotates... During the rotation, the upper drive gear 62 drives the adjusting gear 675 to rotate. The adjusting gear 675, in turn, meshes with gear 673, causing gear 673 to rotate. Gear 673, in turn, drives the stirring blades 672 via the mounting rod 671, thus stirring the plastic and ensuring even heating. While the stirring blades 672 rotate, the output rod 61, in turn, drives gear 641 via the lower drive gear 62. Gear 641, in turn, drives the fixed plate 65 via the rotating cylinder 63, which in turn drives the scraper 66 to rotate. During rotation, the scraper 66 scrapes off the plastic adhering to the inner wall of the housing 1.The scraper 66 rotates in the opposite direction to the stirring blades 672. Because the adjusting gear 675 is smaller than the lower drive gear 62, the scraper 66 rotates faster than the stirring blades 672. This rapid movement of the scraper 66 can re-bring the plastic adhering to the inner wall into the mixing area, allowing it to better contact the stirring blades 672. The drying time depends on the type of plastic; for example, polyethylene typically dries in a shorter time, possibly 1-2 hours, while polypropylene may take 1-3 hours. The operator can time the process using an external timing device (mobile phone or timer). Once the specified mixing time is reached, the servo motor 7, fan 9, and heating wire 10 stop operating under the control of the controller 2. Then, the sealing door 4 is opened, and the dehydrated and dried plastic is discharged through the discharge port.

[0032] It is worth noting that the controller 2 disclosed in the above embodiments can be AT89C51, the servo motor 7 can be 5IK200A-AF, the fan 9 can be ME92252V1-000C-A99, and the temperature detector 12 can be OHR-E700. The controller 2 controls the operation of the servo motor 7, the fan 9, the electric heating wire 10, and the temperature detector 12 using methods commonly used in the prior art.

[0033] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A dehydration and drying device for plastic recycling, comprising a box body (1), a door (3) hinged to a feed inlet on the right side of the upper end of the box body (1), a sealing door (4) hinged to a discharge outlet on the lower side of the outer arc surface of the box body (1), a protective cover (5) provided at the upper end of the box body (1), and an electric heating wire (10) provided on the lower side inside the box body (1), characterized in that: It also includes a hybrid mechanism (6); Mixing mechanism (6): It includes an output rod (61), a drive gear (62), a first gear (64), a scraper (66), and a stirring assembly (67). The output rod (61) is rotatably connected to the left side of the top wall of the protective cover (5). The upper and lower sides of the outer arc surface of the output rod (61) are respectively provided with drive gears (62). The right side inside the protective cover (5) is provided with a first gear (64). The first gear (64) meshes with the drive gear (62) on the lower side. The inside of the box (1) is provided with a scraper (66). The stirring assembly (67) is located inside the box (1).

2. The dehydration and drying apparatus for plastic recycling according to claim 1, characterized in that: It also includes a controller (2), which is located outside the housing (1), and the input terminal of the controller (2) is electrically connected to an external power source.

3. The dehydration and drying apparatus for plastic recycling according to claim 1, characterized in that: The mixing mechanism (6) further includes a rotating cylinder (63) and a fixed plate (65). The rotating cylinder (63) is rotatably connected to the middle of the top wall of the box (1). A gear (64) is provided on the upper side of the outer arc surface of the rotating cylinder (63). Fixed plates (65) are provided on the lower side of the outer arc surface of the rotating cylinder (63). Scrapers (66) are provided at the lower ends of the four fixed plates (65). The ends of the four scrapers (66) away from the center of the box (1) are in contact with the inner wall of the box (1).

4. The dehydration and drying apparatus for plastic recycling according to claim 3, characterized in that: The stirring assembly (67) also includes a mounting rod (671), stirring blades (672), gear two (673), adjusting rod (674), and adjusting gear (675). The mounting rod (671) is rotatably connected to the inside of the rotating cylinder (63). Stirring blades (672) are respectively provided on the lower side of the outer arc surface of the mounting rod (671), and gear two (673) is provided on the upper side of the outer arc surface of the mounting rod (671). The adjusting rod (674) is rotatably connected to the middle of the top wall of the protective cover (5). The adjusting rod (674) is located between the right side of the output rod (61) and the left side of the mounting rod (671). Adjusting gear (675) is provided on the lower side of the outer arc surface of the adjusting rod (674). The driving gear (62) and gear two (673) on the upper side are both meshed with the adjusting gear (675).

5. A dehydration and drying apparatus for plastic recycling according to claim 2, characterized in that: A servo motor (7) is provided in the middle of the upper end of the protective cover (5). The lower end of the output shaft of the servo motor (7) is fixedly connected to the upper end of the output rod (61). The input end of the servo motor (7) is electrically connected to the output end of the controller (2).

6. A dehydration and drying apparatus for plastic recycling according to claim 2, characterized in that: Temperature detectors (12) are respectively installed on the upper and lower sides of the outer arc surface of the box (1). The probes of the two sets of temperature detectors (12) are located inside the box (1). The temperature detectors (12) are bidirectionally electrically connected to the controller (2).

7. A dehydration and drying apparatus for plastic recycling according to claim 6, characterized in that: The lower side of the box (1) is provided with a cavity (8), which is located below the sealing door (4) and the temperature detector (12) on the lower side. A fan (9) is provided in the middle of the bottom wall of the cavity (8), and an electric heating wire (10) is provided in the upper side of the cavity (8). An air outlet is provided at the upper end of the fan (9). A uniformly distributed vent hole (13) is provided in the middle of the top wall of the cavity (8). The input end of the fan (9) is electrically connected to the output end of the controller (2).

8. A dehydration and drying apparatus for plastic recycling according to claim 7, characterized in that: A filter screen (11) is provided in the air inlet at the lower end of the fan (9) and the air outlet at the upper end of the housing (1).

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