Vertical plastic particle stirring device

Abstract

The application relates to the technical field of plastic processing equipment, in particular to a vertical plastic particle stirring device which comprises a rack, a stirring barrel, a motor and an airflow auxiliary assembly, the rack is erected on the ground, the rack comprises a base and a supporting rod, the supporting rod is arranged perpendicularly to the base, the stirring barrel is connected with the supporting rod and located above the base, the stirring barrel is internally provided with a stirring assembly, the stirring assembly comprises a rotating shaft and a plurality of blades, the plurality of blades are grouped from top to bottom along the length direction of the rotating shaft and arranged on the rotating shaft at intervals, the motor is connected with the rotating shaft, and the motor cooperates with the airflow auxiliary assembly to uniformly mix the plastic particles, and the application has the characteristics that the plastic particles are uniformly mixed.

Description

Technical Field

[0001] This application relates to the field of plastic processing equipment technology, and in particular to a vertical plastic pellet mixing device. Background Technology

[0002] Plastic granules are raw materials for plastic products and are widely used in the manufacture of toys, furniture, stationery, packaging materials and other products. During the processing of plastic granules, stirring and mixing is one of the key steps, which will directly affect the physical properties and appearance quality of the final product.

[0003] In related technologies, when plastic granules are packaged and shipped as finished products, vertical plastic granule mixers are commonly used to mix them by mechanical mixing. That is, the motor drives the blades to rotate, lifting the plastic granules from the bottom of the mixing tank to the top and then scattering them in an umbrella shape, forming an up-and-down circulating mixing.

[0004] The existing mixing devices for plastic pellet processing have the following problems: vertical plastic pellet mixers mainly rely on gravity and centrifugal force to mix plastic pellets, which results in slight stratification of the plastic pellets after mixing, leading to uneven mixing of plastic pellets and affecting the yield of the final product. Summary of the Invention

[0005] To ensure uniform mixing of plastic granules, this application provides a vertical plastic granule mixing device.

[0006] The vertical plastic granule mixing device provided in this application adopts the following technical solution: A vertical plastic granule mixing device includes: a frame, a mixing tank, a motor, and an airflow auxiliary component. The frame is mounted on the ground and includes a base and a support rod. The support rod is perpendicular to the base. The mixing tank is connected to the support rod and located above the base. The mixing tank contains a mixing component, which includes a rotating shaft and several blades. The blades are grouped from top to bottom and spaced apart along the length of the rotating shaft. The motor is connected to the rotating shaft, and the motor works in conjunction with the airflow auxiliary component to uniformly mix the plastic granules.

[0007] By adopting the above scheme, the connection between the equipment structures is stable. The motor drives the blades to rotate, shearing and turning the plastic particles in the mixing tank. The airflow auxiliary component sprays compressed air from the bottom or side, which suspends the plastic particles and enhances the diffusion motion. The blades and airflow work together to mix the plastic particles, reducing the occurrence of material stratification and improving the mixing uniformity of the plastic particles.

[0008] Preferably, the airflow assist component includes an air pump and a plurality of nozzles, the plurality of nozzles being evenly distributed on the inner wall of the mixing tank, the jetting end of the nozzles facing the inside of the mixing tank, the air pump being connected to the nozzles via an air pipe, and the air pump being fixed to the side wall of the mixing tank.

[0009] By adopting the above scheme, the airflow auxiliary component generates compressed air through an air pump, and sprays airflow from the inner wall of the mixing tank at multiple angles through nozzles, which works in conjunction with the blades to form synergistic mixing and improve the mixing efficiency of the device.

[0010] Preferably, the nozzle is provided with a filter screen.

[0011] By adopting the above solution, plastic particles or other impurities in the mixing tank can be intercepted, reducing the physical impact of plastic particles on the nozzle and backflow clogging, thus extending the service life of the nozzle.

[0012] Preferably, the mixing tank is configured in a funnel shape, with an inlet and an outlet at the top and bottom of the mixing tank, respectively.

[0013] By adopting the above scheme, the funnel-shaped structure reduces the dead corners of material accumulation in the mixing tank. After the plastic granules are put in from the top inlet, they are guided to the bottom by the inclined surface of the funnel under the action of gravity, sinking while being evenly mixed and discharged from the outlet.

[0014] Preferably, the outer wall of the mixing tank has a viewing window, which is transparent.

[0015] By adopting the above solution, staff can directly observe the mixing of plastic granules in the mixing tank and the surface wear of the tank wall through a viewing window, improving the convenience and safety of the equipment.

[0016] Preferably, the bottom of the mixing tank is provided with a hopper, the hopper is open, the hopper is connected to the discharge port, the side wall of the hopper is connected to the support rod, the bottom of the hopper is connected to the base, the hopper is hollow, and a material screen is provided inside the hopper.

[0017] By adopting the above solution, after the plastic granules are discharged from the outlet, they fall into the feed net in the hopper for collection. The hopper, support rod and mixing tank are connected to form a whole, which reduces the occurrence of equipment vibration causing displacement and material splashing, and also reduces the space occupied by the equipment.

[0018] Preferably, the motor is vertically positioned at the center directly above the mixing tank, the output shaft of the motor is vertically oriented, and the output shaft of the motor is connected to and coaxial with the rotating shaft.

[0019] By adopting the above scheme, the motor directly drives the blades through the output shaft to generate a strong shear flow in the mixing tank, which lifts the plastic particles from the bottom of the mixing tank to the top and then scatters them in an umbrella shape, forming an up-and-down circulation. This, combined with the airflow sprayed from the nozzle, works together to stir the plastic particles, thereby uniformly mixing the materials.

[0020] Preferably, the bottom of the support rod is provided with a foot brace, and a reinforcing rib is provided between the base and the support rod. The two ends of the reinforcing rib are respectively connected to the lower surface of the base and the side wall of the support rod.

[0021] By adopting the above solution, the foot support increases the grounding area of ​​the equipment, disperses the vibration load generated during the operation of the mixing tank, and the reinforcing rib connects the base and the side wall of the support rod, converting the mixing torque into axial pressure, reducing stress concentration at the root of the support rod, and comprehensively improving the overall rigidity and vibration resistance of the equipment.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. To ensure uniform mixing of plastic granules, which helps to improve the yield of final products; 2. Improved the convenience and safety of the equipment; 3. Improved equipment stability and vibration resistance. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0024] Figure 2 This is a schematic diagram showing the cooperation relationship between the airflow assist component and the stirring component in an embodiment of this application.

[0025] Explanation of reference numerals in the attached drawings: 1. Frame; 11. Base; 12. Support rod; 121. Foot brace; 122. Reinforcing rib; 2. Mixing tank; 21. Feed inlet; 22. Discharge outlet; 23. Viewing window; 3. Hopper; 31. Feed screen; 32. Feed cover; 4. Motor; 5. Airflow auxiliary component; 51. Nozzle; 52. Air pump; 6. Mixing component; 61. Blade; 62. Rotating shaft. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0027] This application discloses a vertical plastic granule mixing device. (Refer to...) Figure 1-2A vertical plastic granule mixing device includes a frame 1, a mixing tank 2, a motor 4, and an airflow auxiliary component 5. The frame 1 is mounted on the ground and includes a base 11 and support rods 12. In this embodiment, there are four support rods 12, which are vertically welded to the upper surface of the base 11. The side wall of the mixing tank 2 is welded to the side wall of the support rods 12.

[0028] Furthermore, the mixing tank 2 has a built-in mixing component 6, which includes a rotating shaft 62 and several blades 61. The blades 61 are integrally formed on the rotating shaft 62. At the same time, the blades 61 are grouped from top to bottom and spaced apart along the length of the rotating shaft 62. The motor 4 is connected to the rotating shaft 62 and is coaxially arranged, and works with the airflow auxiliary component 5 to uniformly mix the plastic particles.

[0029] Therefore, the motor 4 drives the blades 61 to rotate at high speed, generating shearing and convection effects on the plastic particles in the mixing tank 2. The airflow auxiliary component 5 sprays compressed air from the bottom or side, enhancing the fluidity of the plastic particles and their diffusion in three-dimensional space. The mechanical stirring and airflow suspension form a composite motion field, effectively reducing material stratification in the mixing tank 2 and improving the mixing uniformity of the plastic particles.

[0030] In the process described above, the airflow auxiliary component 5 includes an air pump 52 and several nozzles 51. In this embodiment, the several nozzles 51 are arranged in a ring array and are evenly distributed on the inner wall of the mixing tank 2. The jet end of the nozzle 51 is inclined towards the inside of the mixing tank 2.

[0031] Furthermore, the nozzle 51 is connected to the air pump 52 via an air pipe. The air pump 52 is fixed to the side wall of the mixing tank 2. Therefore, the airflow auxiliary component 5 generates compressed air through the air pump 52, which is sprayed from the inner wall of the mixing tank 2 at multiple angles through the nozzle 51 to form a swirling flow, reducing the accumulation of plastic particles at the edges and corners. In addition, the inclined nozzle 51 can effectively reduce the occurrence of material adhesion caused by direct blowing on the tank wall of the mixing tank 2.

[0032] Furthermore, the airflow auxiliary component 5, in conjunction with the mechanical stirring method of the blade 61, forms a synergistic stirring, which reduces the mechanical energy consumption of the device while improving the mixing efficiency of the device.

[0033] Meanwhile, a filter screen (not shown in the attached figure) is provided on the nozzle 51 to intercept plastic particles or other impurities in the mixing tank 2, reduce the physical impact of plastic particles on the nozzle 51 and the damage to the internal flow channel caused by backflow blockage, and extend the service life of the nozzle 51. The operator can freely select the appropriate mesh size of the filter screen according to the particle size of the plastic particles.

[0034] In the process described above, the motor 4 is vertically positioned at the center above the mixing tank 2, the output shaft of the motor 4 is vertically positioned, and the output shaft of the motor 4 is connected to and coaxially positioned with the rotating shaft 62.

[0035] Therefore, the motor 4 directly drives the blades 61 to rotate at high speed in the mixing tank 2 through the output shaft, thereby generating a strong shear flow that lifts the plastic particles from the bottom to the top of the mixing tank 2 and then scatters them in an umbrella shape. At the same time, the axial conveying flow generated by the rotation of the blades 61 and the radial diffusion flow generated by the jet airflow from the nozzle 51 form a convection, thereby achieving uniform mixing of the materials.

[0036] Specifically, in this embodiment, the type of motor 4 is a geared motor, which can be adapted to frequency conversion control to meet the speed gradient requirements of different materials.

[0037] On the other hand, the mixing tank 2 is designed with a funnel-shaped structure, which reduces the dead corners of material accumulation inside the mixing tank 2. The inlet 21 and the outlet 22 are respectively located at the top and bottom of the mixing tank 2. After the plastic granules are put in from the top inlet 21, they naturally settle to the bottom under the action of gravity and the guidance of the inclined surface of the funnel, which reduces the energy consumption of mechanical mixing. The mixed granules can be quickly discharged from the bottom outlet 22, reducing internal residue and improving the mixing and conveying efficiency of materials.

[0038] Correspondingly, the funnel-shaped contraction section also enhances material convection. Combined with the centripetal vortex formed by the blades 61, it shortens the mixing time of the plastic particles. The structure, which is wider at the top and narrower at the bottom, allows the plastic particles to pass through the high-shear zone and be further refined and dispersed.

[0039] In addition, a hopper 3 is provided at the bottom of the mixing tank 2. The hopper 3 is open and connected to the bottom of the discharge port 22. The side wall of the hopper 3 is welded to the side wall of the support rod 12. The bottom of the hopper 3 is welded to the upper surface of the base 11. A material mesh 31 is integrally formed inside the hopper 3. In this embodiment, a material cover 32 is also rotatably connected above the hopper 3. The shape of the material cover 32 is adapted to the opening of the hopper 3.

[0040] Therefore, after the plastic granules are discharged from the outlet 22, they fall onto the feed net 31 in the hopper 3 for collection. By covering the opening of the hopper 3 with the cover 32, the occurrence of plastic granules splashing and falling outside the hopper 3 is reduced.

[0041] Furthermore, the sidewall of the hopper 3 is rigidly connected to the support rod 12 and the mixing tank 2, which reduces the occurrence of equipment displacement caused by vibration and effectively saves equipment space compared with the traditional flat-bottomed hopper 3.

[0042] Meanwhile, a viewing window 23 is provided on the outer wall of the mixing tank 2. The viewing window 23 is transparent, and the staff can directly monitor the material flow trajectory, particle dispersion and color uniformity through the viewing window 23. This makes it easy to adjust the mixing speed or airflow auxiliary parameters in real time so that the mixing uniformity meets the process requirements.

[0043] Furthermore, staff can quickly identify abnormalities such as plastic granule layering, clumping, wear or material adhesion on the inner wall of the mixing tank 2 through the viewing window 23, reducing the risk of external contamination caused by opening the lid for spot inspection. The viewing window 23 allows staff to complete preliminary quality inspection under closed conditions, improving the convenience and safety of the equipment.

[0044] On the other hand, the bottom of each of the four support rods 12 is welded with a foot support 121. In this embodiment, the foot support 121 is made of metal and is arranged in a disc shape. Therefore, the foot support 121 expands the grounding area of ​​the equipment and achieves uniform stress transmission through the symmetrical structure. It disperses the dynamic load generated by the equipment's own weight and stirring torque to the entire contact surface and transmits it to the ground, effectively improving the equipment's vibration resistance.

[0045] Furthermore, a reinforcing rib 122 is provided between the base 11 and the support rod 12. In this embodiment, the reinforcing rib 122 is arranged in a triangular structure. One right-angled side of the reinforcing rib 122 is welded to the lower surface of the base 11, and the other right-angled side of the reinforcing rib 122 is welded to the side wall of the support rod 12.

[0046] Correspondingly, the reinforcing rib 122 is welded to the base 11 and the support rod 12 to form a rigid force network with the base 11 and the support rod 12. When the blade 61 generates stirring torque, the reinforcing rib 122 decomposes the tangential force into axial pressure and transmits it to the base 11, reducing the total stress on the bottom of the support rod 12. Through mechanical transmission optimization, the overall dynamic stability of the equipment is improved.

[0047] The implementation principle of the vertical plastic granule mixing device in this application embodiment is as follows: the motor 4 drives the blades 61 to rotate at high speed inside the mixing tank 2 to generate mechanical shear flow. At the same time, the nozzle 51 injects compressed air from multiple directions to form a mechanical-pneumatic coupled flow field. This dual action mechanism causes the plastic granules to be subjected to radial shear force and axial suspension force at the same time, thereby reducing the material stratification inside the mixing tank 2, making the plastic granules mixed evenly, and improving the yield of the final product.

[0048] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A vertical plastic granule mixing device, characterized in that, The system includes a frame (1), a mixing tank (2), a motor (4), and an airflow auxiliary component (5). The frame (1) is mounted on the ground and includes a base (11) and a support rod (12). The support rod (12) is perpendicular to the base (11). The mixing tank (2) is connected to the support rod (12) and located above the base (11). The mixing tank (2) contains a mixing component (6). The mixing component (6) includes a rotating shaft (62) and several blades (61). The blades (61) are grouped from top to bottom along the length of the rotating shaft (62) and spaced apart. The motor (4) is connected to the rotating shaft (62). The motor (4) works with the airflow auxiliary component (5) to uniformly mix the plastic particles.

2. The vertical plastic granule mixing device according to claim 1, characterized in that, The airflow assist component (5) includes an air pump (52) and a plurality of nozzles (51). The plurality of nozzles (51) are evenly distributed on the inner wall of the mixing tank (2). The jet end of the nozzles (51) faces the inside of the mixing tank (2). The air pump (52) is connected to the nozzles (51) through an air pipe. The air pump (52) is fixed to the side wall of the mixing tank (2).

3. A vertical plastic granule mixing device according to claim 2, characterized in that, A filter screen is provided on the nozzle (51).

4. The vertical plastic granule mixing device according to claim 1, characterized in that, The mixing tank (2) is configured in a funnel shape, and the top and bottom of the mixing tank (2) are respectively provided with a feed inlet (21) and a discharge outlet (22).

5. A vertical plastic granule mixing device according to claim 4, characterized in that, The outer wall of the mixing tank (2) is provided with a viewing window (23), which is transparent.

6. A vertical plastic granule mixing device according to claim 4, characterized in that, The bottom of the mixing tank (2) is provided with a hopper (3), the hopper (3) is open, the hopper (3) is connected to the discharge port (22), the side wall of the hopper (3) is connected to the support rod (12), the bottom of the hopper (3) is connected to the base (11), the hopper (3) is hollow, and a material mesh (31) is provided inside the hopper (3).

7. A vertical plastic granule mixing device according to claim 1, characterized in that, The motor (4) is vertically positioned at the center directly above the mixing tank (2). The output shaft of the motor (4) is arranged in a vertical direction and is connected to and coaxial with the rotating shaft (62).

8. A vertical plastic granule mixing device according to claim 1, characterized in that, The bottom of the support rod (12) is provided with a foot support (121), and a reinforcing rib (122) is provided between the base (11) and the support rod (12). The two ends of the reinforcing rib (122) are respectively connected to the lower surface of the base (11) and the side wall of the support rod (12).

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