Preheating device for regenerated plastic particles

Abstract

The utility model relates to the field of reprocessed plastic particle treatment, in particular to a preheating device for reprocessed plastic particles, which comprises a cabin body, a motor, a blanking pipe, an electric heating wire, a valve and the like, the cabin body is a closed circular cylindrical body internally provided with a cavity, a motor is mounted at the top of the cabin body, an output shaft of the motor extends into the cabin body, the front side of the top of the cabin body is communicated with a discharging pipe, an electric heating wire is mounted in the cavity of the cabin body in a surrounding manner, and a valve is arranged in the middle of the bottom in the cabin body. The motor drives the stirring rod to rotate, so that plastic particles continuously roll in the cabin body, the contact area between the particles and the inner wall of the cabin body is increased, and the preheating efficiency is improved; the electric heating wires are arranged in a surrounding manner and uniformly distribute heat, so that the preheating uniformity is ensured.

Description

Technical Field

[0001] The utility model relates to the field of recycled plastic particle processing, in particular to a preheating device for recycled plastic particles. Background Art

[0002] Recycled plastic particles are plastic particles made from recycled waste plastics through a series of processing processes.

[0003] Most of the plastic pellet preheating devices used in the prior art generally adopt a static preheating method, which aims to separate the preheating plate and the heating element in the cabin, place the plastic pellets on the preheating plate, and preheat the plastic pellets through the backflow between the heating element and the cabin.

[0004] For example, the preheating device for recycled plastic particles disclosed in Chinese patent CN213137429U preheats the recycled plastic particles placed in the preheating chamber by radiating heat from a heat radiation surface. However, the device still has the following disadvantages, similar to some existing technologies:

[0005] 1. Static preheating method: Since the plastic particles are stationary, the heat transfer is uneven, which is prone to local overheating or insufficient preheating, affecting the preheating effect.

[0006] 2. Plastic particles tend to stick together during the preheating process, making cleaning difficult and affecting the subsequent preheating effect. Utility Model Content

[0007] In order to overcome the above-mentioned shortcomings of the prior art, the utility model provides a preheating device for recycled plastic particles with better preheating effect.

[0008] In order to solve the above technical problems, the utility model provides a preheating device for recycled plastic particles, including a cabin, a motor, a discharge pipe, a heating wire, a valve and a stirring rod. The cabin is a closed circular cylindrical body with a cavity inside. The motor is installed on the top of the cabin, and the motor output shaft extends into the interior of the cabin. The front side of the top of the cabin is connected to the discharge pipe. The heating wire is installed around the cavity of the cabin. A valve is provided in the center of the bottom of the cabin, and stirring rods are symmetrically arranged on the motor output shaft with the axis center.

[0009] Preferably, the inner bottom of the cabin is arranged in a cone shape.

[0010] Preferably, the bottom of the stirring rod rotates and contacts the bottom of the cabin.

[0011] Preferably, it also includes a support frame, a cylinder and a connecting ring. The support frame is arranged on the outside of the cabin body, and the cylinders are symmetrically installed along the circumferential direction of the outside of the support frame, and the piston rods of each cylinder are connected to the support frame. A connecting ring is commonly arranged between the lower parts of each cylinder, and the connecting ring is located below the cabin body.

[0012] Preferably, a controller is also included. The controller is installed in the middle of the rear side of the cabin, and the heating wire, motor and cylinder are all electrically connected to the controller.

[0013] Preferably, it also includes an auger and a connecting rod. A connecting rod is provided on the outside of the motor output shaft, and the ends of several stirring rods are embedded in the connecting rod. An auger is installed on the outside of the connecting rod. The auger is located in the middle of each stirring rod, and the lower end of the auger is located above the valve.

[0014] Beneficial effects: 1. The motor drives the stirring rod to rotate, causing the plastic particles to roll continuously in the cabin, increasing the contact area between the particles and the inner wall of the cabin, and improving the preheating efficiency; the electric heating wire is installed around and evenly distributes heat to ensure the uniformity of preheating.

[0015] 2. The auger makes the plastic particles roll in two different directions, further enhancing the tumbling of the plastic particles and ensuring uniform heating of the particles in the cabin, thus avoiding local overheating or uneven preheating.

[0016] 3. The periodic action of the cylinder causes the cabin to vibrate slightly, which helps prevent the plastic particles from adhering to the inner wall of the cabin during the preheating process, and also helps to evenly distribute the particles in the cabin. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0018] Figure 2 It is a three-dimensional structural diagram of the cabin, motor, heating wire and other components of the utility model.

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure of the auger, connecting rod, stirring rod and other components of the utility model.

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the cabin, support frame, cylinder and other components of the utility model.

[0021] The marks in the accompanying drawings are: 1-cabin, 2-support frame, 3-cylinder, 301-connecting ring, 4-motor, 5-feeding pipe, 6-controller, 7-heating wire, 8-valve, 9-stirring rod, 10-auger, 11-connecting rod. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Example: A preheating device for recycled plastic particles, such as Figures 1-4 As shown, it includes a cabin 1, a motor 4, a discharge pipe 5, an electric heating wire 7, a valve 8 and a stirring rod 9. The cabin 1 is a closed circular cylindrical body with a cavity inside, which helps to improve the uniformity of preheating, and the bottom of the cabin 1 is conical, which helps to smoothly discharge the preheated plastic particles from the cabin 1. The motor 4 is installed on the top of the cabin 1 by bolts, and the output shaft of the motor 4 extends into the interior of the cabin 1. The motor 4 is responsible for driving the stirring rod 9 to rotate, so that the plastic particles are turned over in the cabin 1 to ensure uniform preheating. The front side of the top of the cabin 1 is connected with a discharge pipe 5 to ensure that the particles can smoothly enter the interior of the cabin 1 and avoid the problem of mixing during the feeding process. To prevent the scattering or blockage of particles, a heating wire 7 is installed in the cavity of the cabin 1 by means of screws. When the heating wire 7 is energized, heat is generated. The heat is evenly distributed in the entire cabin 1 through heat conduction and heat convection, thereby heating the plastic particles in the cabin 1. A valve 8 is provided at the center of the bottom of the cabin 1. The valve 8 is used to control the discharge of the preheated plastic particles from the cabin 1. A stirring rod 9 is symmetrically provided on the output shaft of the motor 4 with respect to the axis. The bottom of the stirring rod 9 rotates and contacts the bottom of the cabin 1. The rotation of the stirring rod 9 causes the plastic particles to roll continuously in the cabin 1, thereby increasing the contact area between the particles and the inner wall of the cabin 1.

[0024] like Figure 1 and Figure 4 As shown, it also includes a support frame 2, a cylinder 3 and a connecting ring 301. A support frame 2 is provided on the outside of the cabin 1 for supporting the entire preheating device and providing an installation position for the cylinder 3. The cylinders 3 are symmetrically installed along the circumferential direction on the outside of the support frame 2. The periodic movement of the cylinders 3 causes the cabin 1 to vibrate slightly, which helps to prevent plastic particles from adhering to the inner wall of the cabin 1 during the preheating process. The piston rods of each cylinder 3 are connected to the support frame 2, and a connecting ring 301 is commonly provided between the lower parts of each cylinder 3. The connecting ring 301 is located below the cabin 1 and is used to connect each cylinder 3 to ensure the consistency of the movement of the cylinder 3, thereby better realizing the vibration effect of the cabin 1. The bottom of each cylinder 3 can be installed on the same base platform, further enhancing the overall stability of the device.

[0025] like Figure 2 As shown, a controller 6 is also included. The controller 6 is installed in the middle of the rear side of the cabin 1. The heating wire 7, the motor 4 and the cylinder 3 are all electrically connected to the controller 6. Through the intelligent regulation of the controller 6, the preheating temperature can be accurately controlled to avoid overheating or insufficient heating.

[0026] like Figure 2 and Figure 3As shown, it also includes an auger 10 and a connecting rod 11. The connecting rod 11 is provided on the outside of the output shaft of the motor 4. The connecting rod 11 transmits the rotational power of the motor 4 to the stirring rod 9 and the auger 10 to ensure that they can rotate synchronously, and the ends of several stirring rods 9 are embedded in the connecting rod 11. The auger 10 is installed on the outside of the connecting rod 11. The operation of the auger 10 further enhances the turning of the plastic particles, ensuring that the particles are evenly heated in the cabin, thereby improving the uniformity of preheating. The auger 10 is located in the middle of each stirring rod 9, and the lower end of the auger 10 is located above the valve 8.

[0027] When the plastic particles need to be preheated, the recycled plastic particles are first added into the cabin 1 through the feeding pipe 5, and then the motor 4 is started. The output shaft of the motor 4 drives the stirring rod 9 to rotate. The bottom of the stirring rod 9 contacts the cone-shaped structure of the bottom of the cabin 1 to ensure that the plastic particles can be evenly turned over during the rotation. The rotation of the stirring rod 9 makes the plastic particles continue to roll in the cabin 1, increasing the contact area between the particles and the inner wall of the cabin 1, thereby improving the uniformity and efficiency of preheating. When the electric heating wire 7 is energized, heat is generated. This heat is evenly distributed in the entire cabin 1 through heat conduction and heat convection, heating the plastic particles. The surrounding design of the electric heating wire 7 ensures uniform heat distribution, avoiding local overheating or uneven preheating. When the output shaft of the motor 4 drives the stirring rod 9 to rotate, the auger 10 also rotates with the connecting rod 11 driven by the motor 4, further strengthening the turning of the plastic particles, ensuring that the particles are evenly heated in the cabin 1, and the auger Dragon 10 makes the plastic particles not only tumble in the horizontal direction, but also mix in the vertical direction, thereby improving the uniformity of preheating. In order to maintain the heat dissipation distribution during the preheating process of the plastic particles, the cylinder 3 can be started at this time. The periodic action of the cylinder 3 causes the cabin 1 to vibrate slightly. This vibration helps prevent the plastic particles from adhering to the inner wall of the cabin 1 during the preheating process, and also helps to evenly distribute the particles in the cabin 1. The controller 6 can automatically control the heating power of the heating wire 7, the speed of the motor 4 and the action frequency of the cylinder 3 according to the preset program to ensure precise control of the preheating process. Through the intelligent regulation of the controller 6, the precise control of the preheating temperature can be achieved to avoid overheating or insufficient heating. When the preheating is completed, the valve 8 is opened and the preheated plastic particles can be discharged smoothly from the cabin 1. The conical design of the bottom of the cabin 1 makes it easier for the particles to be concentrated and discharged through the valve 8, avoiding the accumulation or blockage of the particles in the cabin 1. The above completes the operation.

[0028] The above-described embodiments merely represent preferred embodiments of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications, improvements, and substitutions without departing from the concept of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A preheating device for recycled plastic particles, characterized in that: The invention comprises a cabin (1), a motor (4), a discharge pipe (5), a heating wire (7), a valve (8) and a stirring rod (9); the cabin (1) is a closed annular cylindrical body with a cavity inside; a motor (4) is installed on the top of the cabin (1); the output shaft of the motor (4) extends into the interior of the cabin (1); the front side of the top of the cabin (1) is connected to the discharge pipe (5); the cavity of the cabin (1) is surrounded by a heating wire (7); a valve (8) is provided at the center of the bottom of the cabin (1); and a stirring rod (9) is symmetrically provided on the output shaft of the motor (4) about the axis.

2. A preheating device for recycled plastic particles according to claim 1, characterized in that: The inner bottom of the cabin (1) is arranged in a cone shape.

3. A preheating device for recycled plastic particles according to claim 2, characterized in that: The bottom of the stirring rod (9) rotates and contacts the bottom of the cabin (1).

4. A preheating device for recycled plastic particles according to claim 3, characterized in that: The invention also includes a support frame (2), a cylinder (3) and a connecting ring (301), wherein the support frame (2) is arranged on the outside of the cabin body (1), and the cylinders (3) are symmetrically installed on the outside of the support frame (2) along the circumferential direction, and the piston rods of the cylinders (3) are connected to the support frame (2), and a connecting ring (301) is commonly arranged between the lower parts of the cylinders (3), and the connecting ring (301) is located below the cabin body (1).

5. The preheating device for recycled plastic particles according to claim 4, characterized in that: It also includes a controller (6), which is installed at the middle position of the rear side of the cabin (1), and the heating wire (7), the motor (4) and the cylinder (3) are all electrically connected to the controller (6).

6. The preheating device for recycled plastic particles according to claim 5, characterized in that: It also includes an auger (10) and a connecting rod (11), wherein the connecting rod (11) is provided on the outside of the output shaft of the motor (4), and the ends of several stirring rods (9) are embedded in the connecting rod (11), and the auger (10) is installed on the outside of the connecting rod (11), and the auger (10) is located in the middle of each stirring rod (9), and the lower end of the auger (10) is located above the valve (8).

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