Homogenizing bin for plastic production

Abstract

The utility model relates to the technical field of plastic production equipment, in particular to a homogenizing bin for plastic production, which comprises a bin body, a cavity is formed in the bin body, a stirring shaft is arranged in the bin body along the axis, the stirring shaft extends out of the bin body and is connected with a first motor, and the first motor is fixedly mounted at the upper end of the bin body. The upper end and the lower end of the bin body are provided with a feeding port and a discharging port for feeding and discharging particles in and out of the bin body respectively, the end, away from the first motor, of the stirring shaft is fixedly sleeved with a first mounting plate, the first mounting plate is provided with a connecting shaft assembly composed of a plurality of connecting shafts, and the ends, away from the first mounting plate, of the connecting shaft assembly are jointly connected with a second mounting plate. The connecting shaft assembly is sleeved with a plurality of stirring assemblies and a driving mechanism controlling the stirring assemblies to slide on the connecting shaft in the axial direction. The device has the effects of improving the mixing efficiency of plastic particles in the homogenizing bin and promoting more sufficient mixing of the plastic particles.

Description

Technical Field

[0001] The present application relates to the field of plastic production equipment technology, and in particular to a homogenization bin for plastic production. Background Art

[0002] Homogenization is an important process in the plastic modification process. In the preparation of different functional masterbatches and color masterbatches, due to the influence of various factors, the pellets obtained after extrusion have different degrees of uneven physical properties, so it is necessary to homogenize the same batch or multiple batches of products. The homogenization bin is the most commonly used equipment in the homogenization process, which usually uses gravity mixing to homogenize the pellets.

[0003] However, due to the difference in weight of different product pellets, the homogenization bin cannot stir the pellets in the vertical direction during the homogenization process by gravity mixing, resulting in some large plastic pellets still being deposited at the bottom, which in turn causes uneven distribution of pellets inside the homogenization bin. When discharging, the first pellets discharged are often larger than the last pellets discharged. Utility Model Content

[0004] In order to improve the problem that the current homogenizing box cannot fully stir the particles and avoid uneven distribution of the particles, the present application provides a homogenizing bin for plastic production.

[0005] The present application provides a homogenizing bin for plastic production using the following technical solution:

[0006] A homogenizing bin for plastic production comprises a bin body, a cavity is provided inside the bin body, a stirring shaft is arranged inside the bin body along the axis, the stirring shaft extends out of the bin body and is connected to a first motor, the first motor is fixedly mounted on the upper end of the bin body, a feed inlet and a discharge inlet for feeding material particles into and out of the bin body are respectively provided on the upper and lower ends of the bin body, a first mounting plate is fixedly sleeved on one end of the stirring shaft away from the first motor, a connecting shaft assembly composed of a plurality of connecting shafts is arranged on the first mounting plate, a second mounting plate is commonly connected to one end of the connecting shaft assembly away from the first mounting plate, a plurality of stirring assemblies and a driving mechanism for controlling the stirring assembly to slide axially on the connecting shaft are commonly sleeved on the connecting shaft assembly.

[0007] By adopting the above technical solution, when the equipment is running, the first motor drives the first mounting plate and several connecting shafts to rotate, and at the same time the stirring component stirs the particles inside the bin body. At this time, the driving mechanism drives the stirring component to move back and forth along the axial direction of the bin body while rotating, so that the particles located at different heights inside the bin body can be fully mixed.

[0008] Optionally, the driving mechanism includes a support plate fixedly mounted on the connecting shaft assembly and a second motor mounted on the support plate, wherein the output shaft of the second motor is connected to a screw, and the screw is threadedly connected to a plurality of the stirring assemblies.

[0009] By adopting the above technical solution, when the stirring component needs to move up and down, the screw can be driven by the second motor to rotate, and at the same time the stirring component is driven to slide on the connecting shaft to facilitate sufficient mixing between particles at different heights.

[0010] Optionally, the length of the screw rod is smaller than the length of the connecting shaft, and there is a gap between an end of the screw rod away from the second motor and the second mounting plate.

[0011] By adopting the above technical solution, the screw rod will not touch or rub against the second connecting plate during rotation, thereby avoiding damage to the second connecting plate, and also ensuring that the stirring assembly will not collide with the second connecting plate.

[0012] Optionally, the stirring assembly includes a paddle core sleeved on the connecting shaft assembly and a plurality of groups of paddle blades arranged circumferentially along the paddle core, the paddle blades are fixedly mounted on the paddle core, a threaded hole is opened at the center of the paddle core, and the paddle core is threadedly connected to the screw.

[0013] By adopting the above technical solution, the rotation of the screw drives the paddle core to move up and down, and the paddle core drives the paddle blades to move, so that the paddle blades can stir the particles up and down at the same time during the rotation process.

[0014] Optionally, the blades are at a certain angle to the vertical direction, and each group of two symmetrically arranged blades are inclined in opposite directions.

[0015] By adopting the above technical solution, the resistance of the paddle when stirring the particles is reduced compared to when the paddle is in a vertical direction, so as to avoid the paddle being broken or damaged due to excessive force when there are too many particles inside the silo, and it is also more convenient for the paddle to move up and down.

[0016] Optionally, the distance between the end of the paddle and the inner wall of the bin is 40-120 mm.

[0017] By adopting the above technical solution, the particles inside the silo can be stirred more fully, avoiding excessive accumulation of particles near the inner wall of the silo, which makes it impossible to fully mix the particles inside the silo. It can also prevent the silo from being damaged by friction with the inner wall of the silo during rotation when the paddle is too long.

[0018] Optionally, a plurality of the stirring components are arranged at intervals along the axial direction of the bin body.

[0019] By adopting the above technical solution, when the paddles stir the pellets, the pellets at different heights inside the bin can be fully stirred and mixed, thereby improving the stirring efficiency of the homogenizing bin for the plastic pellets.

[0020] Optionally, each group of the blades in each stirring assembly has 2-4 blades.

[0021] By adopting the above technical solution, the best stirring effect can be achieved while avoiding the situation where the first motor and the second motor are overloaded due to too many blades, which may cause the blades to fail to rotate at a constant speed or even break.

[0022] Optionally, a baffle is installed at the end of the screw to prevent the stirring assembly from detaching from the screw.

[0023] By adopting the above technical solution, it is possible to prevent the paddle core from being separated from the screw due to excessive sliding distance when the screw controls the paddle core to slide, thereby preventing the equipment from being damaged.

[0024] Optionally, both the feed port and the discharge port are provided with control valves for controlling the loading and unloading of pellets.

[0025] By adopting the above technical solution, it is possible to avoid the situation where the particles fall out of the silo during the mixing process inside the silo, thereby achieving the effect of promoting more complete mixing of the particles. At the same time, the closed environment makes it easier for the particles to generate heat during mutual collision and friction so as to better dissipate the moisture in the particles.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. The present application designs a stirring blade that can be controlled to move up and down during the rotating stirring process, thereby improving the efficiency of mixing the particles in the homogenizing bin and avoiding insufficient mixing of the particles due to different particle masses;

[0028] 2. The present application improves the structure of the stirring assembly inside the homogenizing bin and the length of the blades, so that the structure can be more stable and stir more fully during rotation, reducing the possibility of damage or even breakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is an overall view of a homogenizing bin for plastic production according to the present application.

[0030] Figure 2 yes Figure 1 Structural cross-section view at AA in the middle.

[0031] Figure 3It is a half-section view of a homogenizing bin body for plastic production according to the present application.

[0032] Figure 4 This is an overall exploded view of a homogenizing bin stirring structure for plastic production according to the present application.

[0033] Figure 5 This is an overall structural view of a stirring assembly of a homogenizing bin for plastic production according to the present application.

[0034] Figure 6 This is a structural view of a support plate for a homogenizing bin for plastic production according to the present application.

[0035] Explanation of the accompanying drawings: 1. warehouse body; 11. feed port; 12. discharge port; 121. bracket; 2. stirring shaft; 3. first motor; 4. first mounting plate; 41. mounting hole; 5. connecting shaft assembly; 6. second mounting plate; 7. stirring assembly; 71. paddle core; 72. paddle; 8. driving mechanism; 81. support plate; 811. center hole; 82. second motor; 83. screw; 831. baffle; 9. control valve. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1-6 This application is described in further detail.

[0037] The embodiment of the present application discloses a homogenization bin for plastic production.

[0038] Reference Figure 1 and Figure 2 A homogenizing bin for plastic production includes a bin body 1 with a cavity formed therein, and the bin body 1 is fixedly mounted on a bracket 121. The bin body 1 is a cylindrical structure with a hemispherical or conical bottom, so that the plastic pellets can be more conveniently discharged from the bin body 1. In this embodiment, the bottom of the bin body 1 is preferably a hemispherical structure. A first motor 3 is fixedly mounted on the center of the upper surface of the bin body 1, and the output shaft of the first motor 3 is rotatably connected to a stirring shaft 2, and one end of the stirring shaft 2 extends into the cavity inside the bin body 1. A first mounting plate 4 is fixedly mounted on the end of the stirring shaft 2 away from the first motor 3. In this embodiment, the first mounting plate 4 is in the shape of a disc.

[0039] Reference Figure 1 and Figure 2 Furthermore, the upper side and the lower side of the homogenizing bin body 1 are respectively provided with a feed port 11 and a discharge port 12, and the bin body 1 is provided with a control valve 9 for controlling the inflow and outflow of plastic pellets at the feed port 11 and the discharge port 12 to prevent excessive pellets in the homogenizing bin. At the same time, the control valve 9 can create a closed environment inside the homogenizing bin body 1, so that heat is generated during the collision or friction between the pellets to remove the moisture contained in the plastic pellets.

[0040] Reference Figure 1 and Figure 2 , a plurality of mounting holes 41 of the same size are provided on the first mounting plate 4 along the circumferential direction of the cross section, and a plurality of identical connecting shafts are rotatably arranged in the mounting holes 41 to form a connecting shaft assembly 5. In this embodiment, the number of mounting holes 41 is preferably 4, that is, the connecting shaft assembly 5 includes 4 identical connecting shafts. A second mounting plate 6 of the same size as the first mounting plate 4 is sleeved on one end of the connecting shaft assembly 5 away from the first mounting plate 4. The first mounting plate 4 is parallel to the second mounting plate 6 and the two together limit the movement of the connecting shaft assembly 5 in the vertical direction and keep the connecting shaft assembly 5 always parallel to each other. A stirring assembly 7 for stirring the plastic pellets is slidably sleeved on the connecting shaft assembly 5, as well as a driving mechanism 8 for driving the stirring assembly 7 to slide on the connecting shaft assembly 5 in the vertical direction.

[0041] Reference Figure 1 and Figure 2 Specifically, the driving mechanism 8 includes a support plate 81 fixedly sleeved on the connecting shaft assembly 5 and having the same size as the first mounting plate 4 and the second mounting plate 6. The support plate 81 is arranged on the connecting shaft assembly 5 near the first mounting plate 4. A center hole 811 is provided at the center of the support plate 81. A second motor 82 is installed on the support plate 81. The output shaft of the second motor 82 passes through the center hole 811 and is rotatably connected to a screw rod 83. The screw rod 83 does not contact the connecting shaft, and there is a gap between the lower end of the screw rod 83 and the second mounting plate 6 to prevent the screw rod 83 from causing damage to the device during rotation.

[0042] Reference Figure 1 and Figure 2 Specifically, the stirring assembly 7 includes a paddle core 71 slidably sleeved on the connecting shaft assembly 5, and a plurality of paddle blades 72 welded to the side of the paddle core 71 and distributed along the axial direction. The plurality of stirring assemblies 7 located on the connecting shaft are arranged at equal intervals in the vertical direction, so that the particles can be fully mixed when the equipment is working, thereby improving the mixing efficiency of the particles.

[0043] Reference Figure 1 and Figure 2 In order to facilitate installation and reduce the resistance of the stirring assembly 7 when moving up and down, the cross-sectional size of the paddle core 71 is the same as that of the support frame, the first mounting plate 4 and the second mounting plate 6. A screw hole is provided through the center of the paddle core 71 and is threadedly connected to the screw rod 83.

[0044] Furthermore, a blocking piece 831 is fixedly mounted on the end of the screw rod 83 away from the second motor 82 to prevent the screw rod 83 from being separated from the screw rod 83 and causing an accident when the paddle core 71 moves up and down.

[0045] Each group of blades 72 has 2 to 4 blades, and the blades 72 are at an acute angle to the vertical direction. Each group of opposite blades 72 are tilted in opposite directions to facilitate the mixing of the particles and reduce the resistance of the blades 72 during the mixing process. The distance between the end of each blade 72 and the inner wall of the silo 1 is within the range of 40-120 mm to ensure that the particles at the inner edge of the silo 1 can be fully stirred and mixed without scratching the inner wall of the silo 1.

[0046] The implementation principle of a homogenization bin for plastic production in the embodiment of the present application is:

[0047] When the plastic pellets enter the homogenizing bin body 1 from the feed port 11, the first motor 3 starts and drives the stirring shaft 2 and the first mounting plate 4 fixedly connected to the stirring shaft 2 to rotate, thereby driving the connecting shaft assembly 5 located between the first mounting plate 4 and the second mounting plate 6 and the stirring assembly 7 on the connecting shaft assembly 5 to rotate and stir the pellets.

[0048] At the same time, during the rotation of the stirring assembly 7, the second motor 82 drives the screw 83 rotatably connected thereto to rotate, and the screw 83 is threadedly connected to the paddle core 71 in the stirring assembly 7, so that the paddle core 71 can drive the paddle 72 to slide back and forth on the connecting shaft assembly 5 along the axial direction of the connecting shaft assembly 5. When the plastic pellets are fully mixed, the discharge port 12 is opened, and the pellets are discharged from the bottom of the bin body 1.

[0049] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A homogenizing bin for plastic production, comprising a bin body (1), wherein a cavity is provided inside the bin body (1), a stirring shaft (2) is arranged along the axis of the bin body (1), the stirring shaft (2) extends out of the bin body (1) and is connected to a first motor (3), the first motor (3) is fixedly mounted on the upper end of the bin body (1), and a feed inlet (11) and a discharge outlet (12) are respectively provided at the upper end and the lower end of the bin body (1) for feeding pellets into and out of the bin body (1), wherein: A first mounting plate (4) is fixedly sleeved on one end of the stirring shaft (2) away from the first motor (3); a connecting shaft assembly (5) composed of a plurality of connecting shafts is arranged on the first mounting plate (4); an end of the connecting shaft assembly (5) away from the first mounting plate (4) is commonly connected to a second mounting plate (6); a plurality of stirring assemblies (7) and a driving mechanism (8) for controlling the stirring assemblies (7) to slide axially on the connecting shaft are commonly sleeved on the connecting shaft assembly (5).

2. A homogenizing bin for plastic production according to claim 1, characterized in that: The driving mechanism (8) comprises a support plate (81) fixedly sleeved on the connecting shaft assembly (5) and a second motor (82) mounted on the support plate (81); the output shaft of the second motor (82) is connected to a screw rod (83); and the screw rod (83) is threadedly connected to a plurality of the stirring assemblies (7).

3. A homogenizing bin for plastic production according to claim 2, characterized in that: The length of the screw rod (83) is shorter than the length of the connecting shaft, and there is a gap between the end of the screw rod (83) away from the second motor (82) and the second mounting plate (6).

4. A homogenizing bin for plastic production according to claim 3, characterized in that: The stirring assembly (7) comprises a paddle core (71) sleeved on the connecting shaft assembly (5) and a plurality of groups of paddle blades (72) arranged along the circumference of the paddle core (71); the paddle blades (72) are fixedly mounted on the paddle core (71); a threaded hole is provided at the center of the paddle core (71); and the paddle core (71) is threadedly connected to the screw (83).

5. A homogenizing bin for plastic production according to claim 4, characterized in that: The blades (72) are arranged at a certain angle to the vertical direction, and each group of two symmetrically arranged blades (72) are arranged to be inclined in opposite directions.

6. A homogenizing bin for plastic production according to claim 5, characterized in that: The distance between the end of the paddle (72) and the inner wall of the bin body (1) is 40-120 mm.

7. A homogenizing bin for plastic production according to claim 6, characterized in that: A plurality of stirring components (7) are arranged at intervals along the axial direction of the bin body (1).

8. A homogenizing bin for plastic production according to claim 7, characterized in that: Each group of the paddles (72) in each stirring assembly (7) has 2 to 4 paddles.

9. A homogenizing bin for plastic production according to claim 8, characterized in that: A blocking piece (831) is installed at the end of the screw (83) to prevent the stirring assembly (7) from separating from the screw (83).

10. A homogenizing bin for plastic production according to claim 1, characterized in that: The feed port (11) and the discharge port (12) are both provided with control valves (9) for controlling the loading and unloading of pellets.

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