A plastic particle material preheating mixing device

Abstract

The utility model discloses a kind of plastic granular material preheating mixing devices, including shell, the inner wall of the shell is rotatably connected with stirring rod by sealing bearing, the inner wall below of the shell is fixedly connected with heating plate, the bottom of the shell is connected with discharge pipe, the outer wall bottom of the shell is fixedly connected with shell by bolt, the inner wall bottom of the shell is fixedly connected with second motor by motor base.The utility model relates to the technical field of plastic granule processing, the plastic granular material preheating mixing device, by the cooperation between second motor, first sprocket, first chain, rotating shaft and blade, it is realized to the plastic granular material of discharge pipe inside agglomerate scattering, solved due to the friction between plastic granule Electrostatic polarization phenomenon can be generated, make particle adsorb moisture in air, surface forms viscous liquid film, plastic granule is under the pressure effect of discharge pipe inside easy to occur agglomeration, to cause the problem that plastic granule after preheating mixing appears agglomerate condition.

Description

Technical Field

[0001] This utility model relates to the field of plastic granule processing technology, specifically to a plastic granule material preheating and mixing device. Background Technology

[0002] Plastic is a high molecular polymer that is lightweight, durable and highly malleable. Microplastics, which are difficult to see with the naked eye, permeate all aspects of daily life. In the processing of plastic granules, the plastic granule material needs to be heated and mixed by a preheating mixing device.

[0003] In traditional preheating and mixing devices, workers put plastic granules into the device and heat and stir them using heating plates and stirring rods inside the device, thereby preheating and mixing the plastic granules. However, during the mixing process of plastic granules, static polarization occurs due to friction between the granules, causing them to absorb moisture from the air. After the charged granules combine with the moisture, a viscous liquid film forms on their surface. When discharging, the plastic granules are prone to agglomeration under the pressure inside the discharge pipe, resulting in clumping of the preheated and mixed plastic granules. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a preheating and mixing device for plastic granules, which solves the problem that static polarization occurs due to friction between plastic granules, causing the granules to absorb moisture from the air. After the charged granules combine with the moisture, a viscous liquid film forms on the surface. Under the pressure inside the discharge pipe, the plastic granules are prone to agglomeration, resulting in clumping of the preheated and mixed plastic granules.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a preheating and mixing device for plastic granules, comprising a housing, a stirring rod rotatably connected to the inner wall of the housing via a sealed bearing, a heating plate fixedly connected to the lower part of the inner wall of the housing, a discharge pipe connected to the bottom of the housing, an outer shell fixedly connected to the bottom of the outer wall of the housing via bolts, a second motor fixedly connected to the bottom of the inner wall of the outer shell via a motor base, a first sprocket fixedly connected to the output end of the second motor, two first sprockets, a first chain meshing between the two first sprockets, a rotating shaft fixedly connected to the inner wall of one of the first sprockets, a rotating shaft rotatably connected to the outer wall of the rotating shaft via a sealed bearing, and blades fixedly connected to the outer wall of the rotating shaft.

[0006] Preferably, a first motor is bolted to the side wall of the housing, and the output shaft of the first motor is bolted to the end of the stirring rod.

[0007] Preferably, an organic cover is fixed to the top of the housing.

[0008] Preferably, the inner wall of the outer shell is rotatably connected to a connecting column, the outer wall of the connecting column is fixedly connected to a lever, a vertical rod is provided above the lever, a horizontal column is fixedly connected to the top of the vertical rod, a sleeve is sleeved on the outer wall of the horizontal column, the outer wall of the sleeve is fixedly connected to the inner wall of the outer shell, a spring is fixedly connected between the sleeve and the horizontal column, and a rubber block is fixedly connected to the end of the horizontal column.

[0009] Preferably, a second sprocket is fixedly connected to the back of the rotating shaft, and there are two second sprockets. A second chain is meshed between the second sprockets, and one of the second sprockets is fixedly connected to the outer wall of the connecting column.

[0010] Preferably, a crossbar is fixedly connected to one side of the inner wall of the outer casing, and a slider is fixedly connected to the lower part of the crossbar, with the outer wall of the slider slidably engaged with the outer wall of the crossbar.

[0011] Beneficial effects

[0012] This invention provides a preheating and mixing device for plastic granules. It offers the following advantages: Through the coordination of a second motor, a first sprocket, a first chain, a rotating shaft, and blades, this device effectively breaks up clumps of plastic granules inside the discharge pipe. This solves the problem of static polarization caused by friction between plastic granules, which leads to the granules absorbing moisture from the air. The resulting combination of charged particles and moisture forms a viscous liquid film on the surface, causing the plastic granules to easily agglomerate under pressure within the discharge pipe, thus resulting in clumping of the preheated and mixed plastic granules.

[0013] By coordinating the lever, vertical rod, spring, sleeve, horizontal column, and rubber block, a slight vibration is achieved in the discharge pipe. This breaks up the sticky aggregation of particles caused by residual heat, prevents clumping, and ensures smooth discharge. It also solves the problem that during discharge, moisture on the surface of plastic particles can stick to the inner wall of the discharge pipe, resulting in high friction and easy blockage. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 An exterior schematic diagram; Figure 3 for Figure 1 A schematic diagram of the structure of the inner and outer shell, rotating shaft, and discharge pipe; Figure 4 for Figure 3 A schematic diagram of the structure of the central lever, vertical rod, and rubber block.

[0015] In the diagram: 1. Casing; 2. Cover; 3. First motor; 4. Stirring rod; 5. Outer shell; 6. Discharge pipe; 7. Heating plate; 8. Second motor; 9. First sprocket; 10. First chain; 11. Shaft; 12. Blade; 13. Second sprocket; 14. Second chain; 15. Connecting column; 16. Actuating rod; 17. Vertical rod; 18. Spring; 19. Sleeve; 20. Horizontal column; 21. Rubber block; 22. Horizontal bar; 23. Slider. Detailed Implementation

[0016] 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.

[0017] The friction between plastic particles generates static polarization, causing the particles to absorb moisture from the air. After the charged particles combine with the moisture, a viscous liquid film forms on the surface. Under the pressure inside the discharge pipe, the plastic particles are prone to agglomeration, resulting in clumping of the preheated and mixed plastic particles.

[0018] In view of this, the present invention provides a plastic granule material preheating and mixing device. Through the cooperation between the second motor, the first sprocket, the first chain, the rotating shaft and the blades, the device can break up the clumps of plastic granules inside the discharge pipe. This solves the problem that the friction between plastic granules will generate static polarization, causing the granules to absorb moisture from the air. After the charged granules combine with the moisture, a viscous liquid film is formed on the surface. Under the pressure inside the discharge pipe, the plastic granules are prone to agglomeration, which leads to the clumping of plastic granules after preheating and mixing.

[0019] Those skilled in the art will connect the electrical components and their compatible power supplies in this case using wires. Appropriate controllers and encoders should be selected according to the actual situation to meet control requirements. The specific connection and control sequence should refer to the working principle below, where the electrical components are connected in the order of operation. The detailed connection methods are well-known in the art. The following mainly introduces the working principle and process, without further explanation of electrical control.

[0020] Example 1, by Figure 1-4It is understood that the plastic granule material preheating and mixing device in this case includes a housing 1, a stirring rod 4 rotatably connected to the inner wall of the housing 1 through a sealed bearing, a heating plate 7 fixedly connected to the lower part of the inner wall of the housing 1, a discharge pipe 6 connected to the bottom of the housing 1, an outer shell 5 fixedly connected to the bottom of the outer wall of the housing 1 through bolts, a second motor 8 fixedly connected to the bottom of the inner wall of the outer shell 5 through a motor base, a first sprocket 9 fixedly connected to the output end of the second motor 8, two first sprockets 9, a first chain 10 meshing between the two first sprockets 9, a rotating shaft 11 fixedly connected to the inner wall of one of the first sprockets 9, a rotating shaft 11 rotatably connected to the outer wall of the rotating shaft 11 through a sealed bearing, and a blade 12 fixedly connected to the outer wall of the rotating shaft 11. In the specific implementation process, it is worth noting that the heating plate 7 adopts an SRY2-220 / 1.5 type silicone rubber heating plate. The connection between the heating plate 7 and the external controller is a three-wire connection. Specifically, the live wire and neutral wire of the heating plate 7 are connected to the relay output terminal of the controller through a high-temperature resistant cable to control the on / off state of the heating plate 7. The grounding wire is directly connected to the equipment grounding terminal to ensure electrical safety. The controller collects the temperature sensor signal inside the housing 1 and uses a PID adjustment algorithm to control the relay switching frequency to achieve precise control of the heating temperature. The second motor 8 is a 57BLDC-400 model. The connection between the second motor 8 and the controller is a five-wire connection. Specifically, the power line of the second motor 8 is connected to the DC power module of the controller, and the three phase wires are connected... The driver is connected to the output terminal of the controller. The driver is connected to the main module of the controller via an RS485 communication interface to realize the transmission of speed commands. The Hall sensor line is connected to the signal input terminal of the driver for speed feedback. The controller adjusts the motor speed according to the discharge requirements. The blade 12 adopts a spiral gradient structure. Its spiral angle gradually increases from the connection between the shaft 11 and the discharge pipe 6 to the outlet end (from 30° to 60°). The gap between the edge of the blade 12 and the inner wall of the discharge pipe 6 is controlled at 0.3-0.5mm. This design can promote the flow of particles through spiral thrust and scrape off the residual particles attached to the inner wall of the pipe. The blade 12 is made of 304 stainless steel. The sealed bearing adopts a double lip structure and is filled with high temperature resistant grease on the inside, which can effectively prevent particles and powder from penetrating into the bearing gap and extend the service life. When preheating and mixing plastic granules, the operator puts the plastic granules into the machine casing 1, and then starts the heating plate 7 through the controller. The heating plate 7 heats the plastic granules, causing the stirring rod 4 to rotate, thereby stirring the plastic granules and heating and mixing them. After that, the operator opens the solenoid valve on the discharge pipe 6 through the controller. The model of the solenoid valve is selected according to the actual situation to meet the working conditions. The preheated and mixed plastic granules are discharged through the discharge pipe 6. After discharge, the operator closes the solenoid valve on the discharge pipe 6 through the controller. When discharging, the operator starts the second motor 8 through the controller. The second motor 8 drives the first sprocket 9 on its output end to rotate, which in turn drives the first chain 10 to rotate, which in turn drives another first sprocket 9 to rotate. The other first sprocket 9 drives the rotating shaft 11 to rotate, and the rotating shaft 11 drives the blades 12 to rotate, breaking up the clumps of plastic particles. At the same time, the spiral thrust of the blades 12 pushes the particles toward the outlet of the discharge pipe 6. After the discharge is completed, the operator stops the second motor 8 through the controller, thus breaking up the clumps of plastic particles inside the discharge pipe 6. Furthermore, the side wall of the housing 1 is fixedly connected to the first motor 3 by bolts, and the output shaft of the first motor 3 is fixedly connected to the end of the stirring rod 4; In the specific implementation process, it is worth noting that the model of the first motor 3 is [model number missing]. The connection method between the first motor 3 and the controller is as follows: the three-phase power line of the first motor 3 is connected to the output terminal of the external frequency converter, and the input terminal of the frequency converter is connected to the 380V three-phase power supply through an air switch to realize the power supply and frequency conversion speed regulation of the motor. The speed feedback encoder of the first motor 3 is connected to the pulse input interface of the controller through a shielded wire to provide real-time feedback on the actual speed of the stirring rod 4. The controller and the frequency converter are connected through an RS485 communication line. The controller sends a speed setting command to the frequency converter and receives the operating status signal of the frequency converter. The operator starts the first motor 3 through the controller, and the first motor 3 drives the stirring rod 4 to rotate, thereby stirring and mixing the plastic granules. After the mixing is completed, the operator stops the first motor 3 through the controller to drive the stirring rod 4 to rotate. Furthermore, a cover 2 is fixedly attached to the top of the housing 1; In the specific implementation process, it is worth noting that the cover 2 can be connected to the housing 1 by bolts. The operator can disassemble and assemble the cover 2 by turning the bolts to clean the inside of the housing 1. At the same time, a rubber gasket is placed at the contact point between the two. The material of the rubber gasket is selected according to the actual situation and meets the working conditions, thereby increasing the sealing between the two sets. The top of the cover 2 is connected to the feed pipe. The operator opens the valve on the feed pipe and feeds the plastic granules into the inside of the housing 1 through the feed pipe. After completion, the operator closes the valve on the feed pipe.

[0021] Example 2, by Figure 1-4 It can be seen that the inner wall of the outer shell 5 is connected to the connecting column 15 by rotation, the outer wall of the connecting column 15 is fixedly connected to the actuating rod 16, the upper part of the actuating rod 16 is provided with the vertical rod 17, the top of the vertical rod 17 is fixedly connected to the horizontal column 20, the outer wall of the horizontal column 20 is sleeved with the sleeve 19, the outer wall of the sleeve 19 is fixedly connected to the inner wall of the outer shell 5, the sleeve 19 and the horizontal column 20 are fixedly connected to the spring 18, and the end of the horizontal column 20 is fixedly connected to the rubber block 21. In the specific implementation process, it is worth noting that the end of the lever 16 is arc-shaped (radius 5mm), and the contact part with the vertical lever 17 is treated with high frequency quenching to reduce wear caused by long-term friction. The rubber block 21 is made of nitrile rubber, and the gap between it and the outer wall of the discharge pipe 6 is 1-2mm. When it impacts, it can generate effective vibration and avoid causing rigid damage to the discharge pipe 6. While discharging material, the connecting column 15 rotates, which drives the actuating rod 16 to rotate. The actuating rod 16 rotates one revolution and contacts the vertical rod 17, thereby driving the vertical rod 17 to move. The vertical rod 17 drives the horizontal column 20 to move in the sleeve 19. The horizontal column 20 drives the rubber block 21 away from the discharge pipe 6. The horizontal column 20 compresses the spring 18. The model of the spring 18 is selected according to the actual situation to meet the working conditions. When the actuating rod 16 separates from the vertical rod 17, the spring 18 rebounds. The elastic force causes the rubber block 21 to strike the discharge pipe 6, causing the discharge pipe 6 to vibrate slightly. This can break the sticky aggregation of particles caused by residual heat, prevent the formation of clumps, ensure smooth discharge, and further improve the discharge effect. Furthermore, a second sprocket 13 is fixedly connected to the back of the rotating shaft 11. There are two second sprockets 13, and a second chain 14 is meshed between the second sprockets 13. One second sprocket 13 is fixedly connected to the outer wall of the connecting post 15. In the specific implementation process, it is worth noting that when the rotating shaft 11 rotates, the rotating shaft 11 drives the second sprocket 13 on its surface to rotate, thereby driving the second chain 14 to rotate, which in turn drives another second sprocket 13 to rotate, and the other second sprocket 13 drives the connecting column 15 to rotate, thereby driving the connecting column 15 to rotate. Furthermore, a crossbar 22 is fixedly connected to one side of the inner wall of the outer casing 5, and a slider 23 is fixedly connected to the lower part of the crossbar 22. The outer wall of the slider 23 is slidably engaged with the outer wall of the crossbar 20. In the specific implementation process, it is worth noting that when the horizontal column 20 moves, the slider 23 slides in the limiting groove on the surface of the horizontal column 20, thereby supporting the horizontal column 20 and guiding it at the same time, so as to ensure the impact accuracy of the rubber block 21 and improve the anti-caking effect.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A preheating and mixing device for plastic granules, comprising a housing (1), characterized in that: The inner wall of the housing (1) is rotatably connected to a stirring rod (4) via a sealed bearing. A heating plate (7) is fixedly connected to the lower part of the inner wall of the housing (1). A discharge pipe (6) is connected to the bottom of the housing (1). A shell (5) is fixedly connected to the bottom of the outer wall of the housing (1) via bolts. A second motor (8) is fixedly connected to the bottom of the inner wall of the shell (5) via a motor base. A first sprocket (9) is fixedly connected to the output end of the second motor (8). There are two first sprockets (9). A first chain (10) is meshed between the two first sprockets (9). A rotating shaft (11) is fixedly connected to the inner wall of one of the first sprockets (9). A rotating shaft (11) is rotatably connected to the outer wall of the rotating shaft (11) via a sealed bearing. A blade (12) is fixedly connected to the outer wall of the rotating shaft (11).

2. The plastic granule material preheating and mixing device according to claim 1, characterized in that: The side wall of the housing (1) is fixed to a first motor (3) by bolts, and the output shaft of the first motor (3) is fixed to the end of the stirring rod (4).

3. The plastic granule material preheating and mixing device according to claim 1, characterized in that: The top of the housing (1) is fixed with an organic cover (2).

4. The plastic granule material preheating and mixing device according to claim 1, characterized in that: The inner wall of the outer shell (5) is connected to a connecting column (15) by rotation. A lever (16) is fixed to the outer wall of the connecting column (15). A vertical rod (17) is provided above the lever (16). A horizontal column (20) is fixed to the top of the vertical rod (17). A sleeve (19) is sleeved on the outer wall of the horizontal column (20). The outer wall of the sleeve (19) is fixed to the inner wall of the outer shell (5). A spring (18) is fixed between the sleeve (19) and the horizontal column (20). A rubber block (21) is fixed to the end of the horizontal column (20).

5. The plastic granule material preheating and mixing device according to claim 4, characterized in that: The back of the rotating shaft (11) is fixedly connected to a second sprocket (13). There are two second sprockets (13). A second chain (14) is meshed between the second sprockets (13). One of the second sprockets (13) is fixedly connected to the outer wall of the connecting post (15).

6. The plastic granule material preheating and mixing device according to claim 4, characterized in that: A crossbar (22) is fixedly connected to one side of the inner wall of the outer shell (5), and a slider (23) is fixedly connected to the lower part of the crossbar (22). The outer wall of the slider (23) is slidably engaged with the outer wall of the crossbar (20).

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