Deodorizing equipment for regenerated hard and impure plastics

Abstract

The utility model relates to the technical field of odor removal of regenerated plastics, in particular to odor removal equipment for regenerated hard and miscellaneous plastics, which comprises a shell, a roller, a power device, a hot air generating device, an air pipe and a shunting device, a spiral structure extending along the axial direction is arranged on the inner wall of the roller, and the output end of the power device is connected with the roller. The power device drives the roller to rotate in the shell; a feeding opening is formed in one end of the roller, a discharging opening is formed in the other end of the roller, and a discharging opening communicated with the discharging opening is formed in the shell; the flow dividing device is located in the roller, provided with a plurality of nozzles and connected with one end of the air pipe, the other end of the air pipe penetrates through the other end of the roller and the shell to be connected to the hot air generating device, a plurality of air outlet holes are formed in the periphery of the roller, and the shell is provided with an air outlet communicated with the air outlet holes. According to the utility model, materials can be transported back and forth in the roller in a reciprocating manner, and position exchange occurs under the action of gravity, so that the materials are uniformly blown by hot air, and the baking and deodorizing effects are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of deodorizing recycled plastics, and more specifically, to a deodorizing device for recycled hard plastics. Background Technology

[0002] With the increasing application of PCR plastics in automotive interiors, furniture, home appliances, food, and daily chemical packaging, higher requirements have been placed on odor control in PCR. The recycled plastics processing typically consists of a granulation stage and a post-processing stage. The granulation stage involves extrusion granulation, where odor removal is achieved by creating a vacuum at the die head to extract some volatiles from the molten plastic. However, due to the short residence time of the plastic in the screw and the unavoidable degradation and release of volatiles during the melting process, a post-processing stage is necessary for efficient odor removal.

[0003] Currently, the deodorization process in the post-treatment stage often uses a vertical mixing tank with hot air blowing to achieve a baking effect. However, relying solely on unidirectional hot air blowing fails to ensure that the material is heated evenly, and the volatile matter is not fully blown away. Only a portion of the material is heated and releases volatile matter, ultimately resulting in poor deodorization effect, which is time-consuming and energy-intensive.

[0004] Existing technology discloses a plastic particle heating and deodorizing device, including at least two tanks arranged alternately from left to right. The left tank is connected to a feed pipe, and the right tank has a discharge port at its bottom. Adjacent tanks are connected to each other by connecting pipes, and both the feed pipe and the connecting pipe are equipped with suction devices. Fans and heating devices are provided on the outside of each tank, and air guides are provided in the middle of the tank. The air guides are connected to the fans and heating devices through hot air pipes. Waste gas absorption devices are provided on the top of each tank. In this scheme, the air guides face downwards to heat and deodorize the plastic particles. The plastic particles are heated unevenly. Even if the plastic particles are continuously transferred between multiple tanks for deodorization, the plastic particles cannot be heated evenly, resulting in poor deodorization effect. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of existing technologies where uneven heating of plastic particles leads to poor deodorization effects, and to provide a deodorization device for recycled hard plastics that can uniformly heat and deodorize plastics, thereby improving the deodorization effect.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A deodorizing device for recycled rigid plastics is provided, comprising a shell, a roller, a power unit, a hot air generator, an air pipe, and a diversion device. The inner wall of the roller has an axially extending spiral structure. The output end of the power unit is connected to the roller, and the power unit drives the roller to rotate within the shell. One end of the roller has a feeding port, and the other end has a discharge port. The shell has an outlet communicating with the discharge port. The diversion device is located inside the roller and has multiple nozzles. The diversion device is connected to one end of the air pipe, and the other end of the air pipe passes sequentially through the other end of the roller and the shell, connecting to the hot air generator. The outer periphery of the roller has multiple air outlets, and the shell has an outlet communicating with the air outlets.

[0008] This utility model discloses a deodorizing device for recycled hard plastics. A spiral structure is installed on the inner wall of a roller, providing sufficient space inside the roller for the installation of a diversion device. During use, material is fed into the inlet, and a hot air generator delivers hot air to the diversion device through an air pipe. The hot air is sprayed from multiple nozzles to heat and bake the material inside the roller. The roller is driven to rotate in both directions by a power device, and the material is reciprocated under the rotation of the spiral structure on the inner wall of the roller. Simultaneously, under the action of gravity, the material's vertical position inside the roller changes, ensuring that the material is evenly scoured by the hot air and reducing wear. Furthermore, during the axial and tumbling motion of the material, the hot air directly acts on the surface of the material, improving the baking effect. The baked material is discharged from the outlet through the discharge port.

[0009] Furthermore, the diversion device includes a diversion pipe, with multiple sets of jet groups spaced apart along the axial direction of the diversion pipe, and nozzles in the same set of jet groups spaced apart circumferentially along the diversion pipe. The multiple sets of jet groups blow hot air onto materials at different axial positions within the roller, while the nozzles in the same set of jet groups blow hot air onto materials at the same axial position but different circumferential positions within the roller, achieving uniform heating and baking of the materials.

[0010] Furthermore, the diversion device also includes a diversion plate, and at least two diversion pipes are provided. One end of each diversion pipe is connected to the diversion plate, and the diversion pipes are evenly spaced along the circumference of the diversion plate. One end of each air pipe is connected to the center of the diversion plate, and the central axis of the air pipe coincides with the central axis of the roller. When the roller rotates under the drive of the power device, it will not interfere with the air pipes, and the diversion pipes can be evenly arranged inside the roller, improving the uniformity of material heating.

[0011] Furthermore, the system includes four diversion pipes. One end of each diversion pipe is connected to the diversion plate, and the other end is connected to the reinforcing plate. The diversion plate connects the two ends of the four diversion pipes, and the reinforcing plate connects the two ends of the diversion pipes. The reinforcing plate helps maintain the stability of the relative positions of the four diversion pipes.

[0012] Furthermore, a support shaft is fixedly provided at one end of the outer casing, the roller is rotatably connected to the support shaft, and the air pipe passes through the support shaft. The support shaft can support the air pipe and the diversion device connected to the air pipe, preventing the diversion device from being misaligned and affecting the normal use of the roller.

[0013] Furthermore, multiple air vents are located on the outer wall of the middle portion of the roller, and are arranged along the outer periphery of the roller. The air outlet is located on the outer wall of the middle portion of the outer casing. During the rotation of the roller, there is always an air vent facing the air outlet, which can promptly discharge hot air. At the same time, the material is baked inside the roller, and its volatiles are separated and volatilized from the material due to the high temperature, and are promptly discharged from the air outlet with the hot air, preventing odorous substances from re-adhering to the material.

[0014] Furthermore, the power unit includes a motor, a drive shaft, and a roller. The output shaft of the motor is connected to the drive shaft, the roller is fixedly connected to the drive shaft, the housing has a notch corresponding to the position of the roller, and the roller contacts the outer wall of the roller.

[0015] Furthermore, there are two rollers and two notches, and the two notches are located at the bottom of both ends of the outer casing.

[0016] Furthermore, a temperature sensor is installed at the air outlet. This sensor allows for real-time monitoring of the exhaust temperature, enabling the temperature of the hot air generator to be adjusted accordingly, ensuring the roller temperature maintains the temperature required for material baking.

[0017] Furthermore, it also includes a control device, with the power unit, temperature sensor, and hot air generator respectively communicatively connected to the control device. The control device can control the power unit to drive the roller to rotate forward or backward, causing the material inside the roller to reciprocate and exchange positions. The temperature sensor communicates with the control device, transmitting the real-time monitored exhaust temperature to the control device. The control device then controls the hot air generator to adjust the temperature, ensuring the roller temperature remains at a set value and the hot air temperature is under control, thus guaranteeing production stability.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] It allows materials to move back and forth within the rollers, exchanging positions, and then move up and down under gravity, resulting in uniform heating and deodorization of the plastic and improving the baking and deodorization effect. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the deodorizing device for recycled hard plastics in this embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the spiral structure in an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the diversion device from a first-view perspective in an embodiment of this utility model;

[0023] Figure 4 This is a schematic diagram of the diversion device from a second perspective in an embodiment of this utility model.

[0024] In the attached diagram: 1-outer shell; 11-notch; 12-discharge port; 13-air outlet; 2-roller; 21-spiral structure; 22-feeding port; 23-air outlet; 3-power unit; 31-motor; 32-drive shaft; 33-roller; 4-hot air generator; 5-air pipe; 6-diverter; 61-diverter plate; 62-diverter pipe; 621-nozzle; 63-reinforcing plate; 7-support shaft; 8-temperature sensor; 9-control device. Detailed Implementation

[0025] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0026] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0027] Example 1

[0028] This embodiment is the first embodiment of a deodorization device for recycled hard plastics, such as... Figures 1 to 4 As shown, the device includes a housing 1, a roller 2, a power unit 3, a hot air generator 4, an air pipe 5, and a diverting device 6. The inner wall of the roller 2 is provided with a spiral structure 21 extending axially. The output end of the power unit 3 is connected to the roller 2, and the power unit 3 drives the roller 2 to rotate inside the housing 1. One end of the roller 2 is provided with a feeding port 22, and the other end of the roller 2 is provided with a discharge port. The housing 1 is provided with a discharge port 12 communicating with the discharge port. The diverting device 6 is located inside the roller 2 and is provided with multiple nozzles 621. The diverting device 6 is connected to one end of the air pipe 5, and the other end of the air pipe 5 passes through the other end of the roller 2 and the housing 1 in sequence and is connected to the hot air generator 4. The outer periphery of the roller 2 is provided with multiple air outlets 23, and the housing 1 is provided with an air outlet 13 communicating with the air outlets 23.

[0029] The aforementioned deodorizing equipment for recycled hard plastics has a spiral structure 21 installed on the inner wall of the roller 2, providing sufficient space inside the roller 2 for the installation of the diversion device 6. During use, materials are fed in through the inlet, and the hot air generator 4 delivers hot air to the diversion device 6 through the air pipe 5. The hot air is sprayed out from multiple nozzles 621 to heat and bake the materials inside the roller 2. The roller 2 is driven to rotate in both directions by the power device 3, and the materials are reciprocated under the rotation of the spiral structure 21 on the inner wall of the roller 2. At the same time, under the action of gravity, the upper and lower positions of the materials inside the roller 2 are exchanged, so that the materials are evenly swept by the hot air and the wear on the materials is reduced. During the axial and tumbling motion of the materials, the hot air can directly act on the surface of the materials, improving the baking effect. The baked materials are discharged from the discharge port 12 through the discharge port.

[0030] like Figure 3 , Figure 4 As shown, the diversion device 6 includes a diversion pipe 62, with multiple sets of jet groups spaced apart along the axial direction of the diversion pipe 62. Nozzles 621 within the same jet group are spaced apart circumferentially along the diversion pipe 62. In practice, the multiple jet groups blow hot air onto materials at different axial positions within the roller 2, while the nozzles 621 within the same jet group blow hot air onto materials at the same axial position but different circumferential positions within the roller 2, achieving uniform heating and baking of the materials.

[0031] like Figure 1 , Figure 3As shown, the diversion device 6 also includes a diversion plate 61, and at least two diversion pipes 62 are provided. One end of the diversion pipe 62 is connected to the diversion plate 61, and the diversion pipes 62 are evenly spaced along the circumference of the diversion plate 61. One end of the air pipe 5 is connected to the middle of the diversion plate 61, and the central axis of the air pipe 5 coincides with the central axis of the roller 2. In implementation, the roller 2 will not interfere with the air pipe 5 when it rotates under the drive of the power device 3, and the diversion pipes 62 can be evenly arranged inside the roller 2, improving the uniformity of material heating.

[0032] Specifically, such as Figure 4 As shown, there are four diversion pipes 62. One end of each diversion pipe 62 is connected to a diversion plate 61, and the other end is connected to a reinforcing plate 63. The four diversion pipes 62 are connected through the diversion plate 61 and the other end through the reinforcing plate 63. In this embodiment, the air pipe 5 is connected to the middle of the diversion plate 61. The hot air generator 4 evenly supplies hot air to the four diversion pipes 62, and the four diversion pipes 62 are evenly spaced, allowing the material in the roller 2 to be uniformly swept by hot air. The hot air can directly act on the surface of the material, improving the baking effect and efficiency. Simultaneously, the other end of each diversion pipe 62 is connected through the reinforcing plate 63, maintaining the relative stability of the four diversion pipes 62.

[0033] like Figure 1 , Figure 4 As shown, a support shaft 7 is fixedly provided at one end of the outer casing 1, and the roller 2 is rotatably connected to the support shaft 7. The air pipe 5 passes through the support shaft 7. In practice, the support shaft 7 can support the air pipe 5 and the diversion device 6 connected to the air pipe 5, preventing the diversion device 6 from being tilted and affecting the normal use of the roller 2.

[0034] like Figure 1 As shown, multiple air outlets 23 are located on the outer wall of the middle part of the roller 2, and the multiple air outlets 23 are arranged along the outer periphery of the roller 2. The air outlet 13 is located on the outer wall of the middle part of the outer shell 1. In practice, after the material is purged with hot air, the hot air is discharged from the air outlets 23 in the middle part of the roller 2. During the rotation of the roller 2, there is always an air outlet 23 facing the air outlet 13, which can discharge the hot air in time. At the same time, the material is baked inside the roller 2, and its volatiles are separated and volatilized from the material due to the high temperature. They are discharged in time from the air outlet 13 with the hot air, avoiding the re-adhesion of odorous substances onto the material.

[0035] Example 2

[0036] This embodiment is the second embodiment of the deodorization device for recycled hard plastics. This embodiment is similar to the first embodiment, except that, as Figure 1As shown, the power unit 3 includes a motor 31, a transmission shaft 32, and a roller 33. The output shaft of the motor 31 is connected to the transmission shaft 32, and the roller 33 is fixedly connected to the transmission shaft 32. The outer casing 1 has a notch 11 corresponding to the position of the roller 33, and the roller 33 contacts the outer wall of the roller 2. In implementation, the motor 31 drives the transmission shaft 32 and the roller 33 to rotate. The roller 2 rotates circumferentially under the action of the roller 33. When the roller 2 rotates, the material can be transported axially. When the motor 31 rotates in the forward and reverse directions, the material can be transported back and forth inside the roller 2, resulting in position exchange. At the same time, under the action of the roller 2's rotation and gravity, the material changes position from top to bottom, so that the material is evenly swept by hot air.

[0037] like Figure 1 As shown, there are two rollers 33 and two notches 11, with the two notches 11 located at the bottom of both ends of the outer casing 1. The two rollers 33 work together to rotate the roller 2 smoothly. It should be noted that there can be multiple rollers 2 and notches 11 to further improve the stability of the roller 2.

[0038] Example 3

[0039] This embodiment is the third embodiment of the deodorization device for recycled hard plastics. This embodiment is similar to embodiment two, except that, as Figure 1 As shown, a temperature sensor 8 is installed at the air outlet 13. The exhaust temperature can be monitored in real time through the temperature sensor 8, and the temperature of the hot air generator 4 can be adjusted according to the exhaust temperature to ensure that the roller 2 temperature can maintain the temperature required for baking the material.

[0040] like Figure 1 As shown, it also includes a control device 9, a power unit 3, a temperature sensor 8, and a hot air generator 4, all of which are communicatively connected to the control device 9. In implementation, the control device 9 can control the power unit 3 to drive the roller 2 to rotate forward or backward, causing the material inside the roller 2 to reciprocate and exchange positions. The temperature sensor 8 communicates with the control device 9, transmitting the real-time monitored exhaust temperature to the control device 9. The control device 9 then controls the hot air generator 4 to adjust the temperature, ensuring that the temperature of the roller 2 remains at a set value, thus keeping the hot air temperature under control and guaranteeing production stability.

[0041] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0042] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A deodorizing device for recycled hard plastics, characterized in that, The device includes a housing (1), a roller (2), a power unit (3), a hot air generator (4), an air pipe (5), and a diverter (6). The inner wall of the roller (2) is provided with a spiral structure (21) extending axially. The output end of the power unit (3) is connected to the roller (2), and the power unit (3) drives the roller (2) to rotate inside the housing (1). One end of the roller (2) is provided with a feeding port (22), and the other end of the roller (2) is provided with a discharge port. The housing (1) is provided with a discharge port. The discharge port (12) is connected to the material outlet; the diversion device (6) is located inside the roller (2), the diversion device (6) is provided with multiple nozzles (621), the diversion device (6) is connected to one end of the air pipe (5), the other end of the air pipe (5) passes through the other end of the roller (2) and the outer shell (1) and is connected to the hot air generator (4), the outer periphery of the roller (2) is provided with multiple air outlets (23), and the outer shell (1) is provided with an air outlet (13) connected to the air outlets (23).

2. The device for removing odor of regenerated hard mixed plastic according to claim 1, wherein, The flow splitting device (6) includes a flow splitting pipe (62), and multiple sets of jet groups are arranged at intervals along the axial direction of the flow splitting pipe (62). The nozzles (621) located in the same set of jet groups are arranged at intervals along the circumferential direction of the flow splitting pipe (62).

3. The device according to claim 2, wherein, The diversion device (6) further includes a diversion disk (61), and at least two diversion pipes (62) are provided. One end of the diversion pipe (62) is connected to the diversion disk (61), and the diversion pipes (62) are evenly spaced along the circumference of the diversion disk (61). One end of the air pipe (5) is connected to the middle part of the diversion disk (61), and the central axis of the air pipe (5) coincides with the central axis of the roller (2).

4. The deodorizing equipment for recycled hard plastics according to claim 3, characterized in that, The diversion pipe (62) is provided with four pipes. One end of the four diversion pipes (62) is connected to the diversion plate (61), and the other end of the four diversion pipes (62) is connected to the reinforcement plate (63). One end of the four diversion pipes (62) is connected through the diversion plate (61), and the other end of the four diversion pipes (62) is connected through the reinforcement plate (63).

5. The device according to claim 1, wherein, One end of the outer shell (1) is fixedly provided with a support shaft (7), the roller (2) is rotatably connected to the support shaft (7), and the air pipe (5) passes through the support shaft (7).

6. The device according to claim 1, wherein, Multiple air outlets (23) are provided on the outer wall of the middle part of the roller (2), and multiple air outlets (23) are provided along the outer periphery of the roller (2). The air outlet (13) is provided on the outer wall of the middle part of the outer shell (1).

7. The device according to claim 1, wherein, The power unit (3) includes a motor (31), a transmission shaft (32) and a roller (33). The output shaft of the motor (31) is connected to the transmission shaft (32), and the roller (33) is fixedly connected to the transmission shaft (32). The outer shell (1) is provided with a notch (11) corresponding to the position of the roller (33), and the roller (33) contacts the outer wall of the roller (2).

8. The device according to claim 7, wherein, The roller (33) and the notch (11) are provided in twos, and the two notches (11) are located at the bottom of both ends of the outer shell (1).

9. The device according to any one of claims 1 to 8, wherein, A temperature sensor (8) is provided at the air outlet (13).

10. The device according to claim 9, wherein the device is characterized by, It also includes a control device (9), wherein the power unit (3), the temperature sensor (8) and the hot air generator (4) are respectively connected to the control device (9).

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