Mixing device for processing biodegradable plastics

Abstract

This utility model relates to a mixing device for biodegradable plastic processing, including a mixing tank with a feed pipe along one side of its top surface. Multiple storage tanks are circumferentially suspended around the feed pipe on the outer side of the mixing tank. An arc-shaped track is horizontally suspended directly below the discharge ports of the storage tanks. A feeding auger is radially mounted between the arc-shaped track and the feed pipe. A discharge pipe is connected downwards to the tail of the feeding auger and is rotatably inserted into the feed pipe. A follower frame is provided between the head of the feeding auger and the arc-shaped track. The top of the follower frame is rotatably supported by the head of the feeding auger, and its bottom is circumferentially slidably connected to the top surface of the arc-shaped track. A feeding hopper is connected upwards to the head of the feeding auger and can move to directly below the discharge port of the corresponding storage tank as the feeding auger rotates circumferentially. This mixing device achieves intensive feeding of multiple powder fillers, reducing equipment costs.

Description

Technical Field

[0001] This utility model belongs to the field of plastic processing technology, and specifically relates to a mixing equipment for processing biodegradable plastics. Background Technology

[0002] Biodegradable plastics contain a variety of main and auxiliary materials. The main materials can generally be divided into two categories based on their source: bio-based (such as starch) and petrochemical-based (such as polyester). The auxiliary materials are used to improve processing performance, mechanical properties, or degradation efficiency, and generally include functional additives such as plasticizers, nucleating agents, and antioxidants, as well as various powder fillers (such as calcium carbonate powder, talc powder, oxidized starch, etc.). Raw material mixing is a key step in the processing of biodegradable plastics.

[0003] Existing mixing equipment generally uses a mixing tank with a mixer in the middle. The main material and functional additives are usually added through a feed door that can be opened and closed on the top of the mixing tank, while various powder fillers are fed through classified storage tanks in conjunction with feeding augers. That is, each storage tank and the mixing tank are connected by a corresponding feeding auger. However, this requires multiple feeding augers, which increases the equipment investment cost for enterprises. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing a mixing device for biodegradable plastic processing. The specific technical solution is as follows:

[0005] This utility model provides a mixing device for biodegradable plastic processing, including a mixing tank with a mixer in the middle, a gate valve at the bottom discharge port of the mixing tank, an openable feeding door on the top surface of the mixing tank, a feeding pipe along one side of the top surface of the mixing tank, and multiple storage tanks circumferentially distributed around the outside of the mixing tank with the feeding pipe as the center, and a gate valve at the bottom discharge port of each storage tank.

[0006] A curved track is horizontally suspended directly below the discharge port of multiple storage tanks. A feeding auger is radially mounted between the curved track and the feed pipe. The tail of the feeding auger is connected downward to a discharge pipe, which is rotatably inserted into the feed pipe. A follower frame is provided between the head of the feeding auger and the curved track. The top of the follower frame is rotatably supported by the head of the feeding auger, and its bottom is circumferentially slidably connected to the top surface of the curved track. A feeding hopper is connected upward to the head of the feeding auger. The feeding hopper can move to directly below the discharge port of the corresponding storage tank as the feeding auger rotates circumferentially.

[0007] As a preferred technical solution of this utility model, an arc-shaped slide rail is vertically arranged on the top surface of the arc-shaped track along its arc-shaped center line. An arc-shaped slider is circumferentially slidably connected to the arc-shaped slide rail, and a support frame is longitudinally arranged on the top surface of the arc-shaped slider.

[0008] As a preferred technical solution of this utility model, the supporting frame includes a support plate vertically connected to the top surface of the arc-shaped slider. A support rod is vertically rotatably connected to the middle of the top surface of the support plate. An arc-shaped support plate is fixedly connected to the top of the support rod and is fixedly engaged with the bottom surface of the feed auger head.

[0009] As a preferred technical solution of this utility model, the arc-shaped slider is driven by a driving component provided on its inner side to move circumferentially along the arc-shaped slide rail.

[0010] The drive assembly includes a suspension plate that is horizontally fixed to the inner side of the arc-shaped slider. A servo motor is longitudinally fixed on the top surface of the suspension plate. The power output end of the servo motor passes through the suspension plate and is axially connected to a drive gear. The drive gear meshes with an arc-shaped rack fixedly connected to the inner arc surface of the arc-shaped track.

[0011] As a preferred embodiment of this utility model, the longitudinal section of the arc-shaped slide rail is a T-shaped structure.

[0012] As a preferred embodiment of this utility model, the mixing tank has a conical structure and is fixedly supported by a triangular support frame.

[0013] As a preferred embodiment of the present invention, each of the storage tanks is fixedly suspended by a corresponding suspension frame; a feeding hopper is provided on the top surface of the storage tank.

[0014] As a preferred embodiment of this utility model, the arc-shaped track is fixedly suspended to at least one suspension frame via a matching mounting bracket.

[0015] The beneficial effects of this utility model are:

[0016] 1. The mixing equipment of this utility model realizes the intensive feeding of multiple powder fillers, reducing equipment costs; through the combination design of a single feeding auger, arc track and supporting frame, it replaces the traditional multi-auger parallel feeding mode, reducing the number of augers; multiple storage tanks share the same feeding auger, and the circumferential sliding of the arc track realizes the alternating docking of different storage tanks, which greatly reduces the equipment procurement and maintenance costs.

[0017] 2. This utility model's mixing equipment optimizes spatial layout and improves equipment integration. Storage tanks are circumferentially suspended outside the mixing tank, and the feeding auger is radially arranged with the feed pipe as its axis. The compact layout, combining the arc-shaped track and the radial auger, avoids the space-consuming problem of traditional straight-line arrangements, making it particularly suitable for space-constrained production workshops. Adding a new storage tank only requires expansion along the arc-shaped track, without altering the main structure of the feeding auger, facilitating future capacity upgrades. Attached Figure Description

[0018] Figure 1 A three-dimensional structural schematic diagram of the present invention is shown;

[0019] Figure 2 A top view of the structure of this utility model is shown;

[0020] Figure 3 This invention shows a schematic diagram of the assembly of the mixing tank and the feeding auger in this utility model;

[0021] Figure 4 It shows Figure 3 Enlarged view of the structure at part A in the middle.

[0022] The diagram shows: 1. Mixing tank; 11. Support frame; 12. Mixer; 13. Gate valve one; 14. Feed pipe; 15. Feed gate; 2. Storage tank; 21. Suspension frame; 22. Gate valve two; 23. Feed hopper; 3. Feeding auger; 31. Discharge pipe; 32. Feed hopper; 4. Arc track; 41. Mounting frame; 42. Arc slide rail; 43. Arc slider; 5. Support frame; 51. Support plate; 52. Support rod; 53. Arc support plate; 6. Drive assembly; 61. Suspension plate; 62. Servo motor; 63. Drive gear; 64. Arc rack. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.

[0024] Example 1

[0025] To address the technical problems in the background section, the following mixing equipment for biodegradable plastic processing is provided:

[0026] Combination Figures 1-4 As shown, the mixing equipment for biodegradable plastic processing includes a mixing tank 1 with a mixer 12 in the middle. The bottom discharge port of the mixing tank 1 is equipped with a gate valve 13, and the top surface of the mixing tank is equipped with an openable feeding door (15). A feed pipe 14 is provided along one side of the top surface of the mixing tank 1. Multiple storage tanks 2 are suspended around the outside of the mixing tank 1 with the feed pipe 14 as the center. Each storage tank 2 is equipped with a gate valve 22 at the bottom discharge port.

[0027] A curved track 4 is horizontally suspended directly below the discharge port of multiple storage tanks 2. A feeding auger 3 is radially mounted between the curved track 4 and the feed pipe 14. The tail of the feeding auger 3 is connected downward to a discharge pipe 31, which is rotatably inserted into the feed pipe 14. A follower support 5 is provided between the head of the feeding auger 3 and the curved track 4. The top of the follower support 5 is rotatably supported and connected to the head of the feeding auger 3, and its bottom is circumferentially slidably connected to the top surface of the curved track 4. A feeding hopper 32 is connected upward to the head of the feeding auger 3. The feeding hopper 32 can move to directly below the discharge port of the corresponding storage tank 2 as the feeding auger 3 rotates circumferentially.

[0028] By adopting the above technical solutions, the mixing equipment achieves intensive feeding of multiple powder fillers, reducing equipment costs; by combining a single feeding auger 3, an arc track 4, and a support frame 5, it replaces the traditional parallel feeding mode of multiple augers, reducing the number of augers; multiple storage tanks 2 share the same feeding auger 3, and different storage tanks 2 are connected in turn by circumferential sliding of the arc track 4, which greatly reduces equipment procurement and maintenance costs.

[0029] This mixing equipment optimizes the spatial layout and improves equipment integration. Storage tanks 2 are circumferentially suspended outside mixing tank 1, while the feeding auger 3 is radially arranged around the feed pipe 14. The compact layout, combining the arc-shaped track 4 with the radial auger, avoids the space-consuming issues of traditional straight-line arrangements, making it particularly suitable for space-constrained production workshops. Adding new storage tanks only requires expansion along the arc-shaped track, without altering the main structure of the feeding auger 3, facilitating future capacity upgrades.

[0030] Preferably, each storage tank 2 is equipped with an independent powder metering pump (not shown in the figure) at the bottom discharge port to facilitate the metering of the amount of powder discharged from each storage tank 2.

[0031] like Figure 1 and Figure 3 As shown, the mixing tank 1 has a conical structure and is fixedly supported by a triangular support frame 11.

[0032] By adopting the above technical solution, the conical space of the tank, combined with the rotation of the mixer 12, forms a top-down vortex, which promotes the three-dimensional convection mixing of the main material and the powder filler, and shortens the homogenization time.

[0033] The rigid truss structure of the triangular support frame 11 can evenly distribute the weight of the mixing tank 1, adapting to the vibration environment of the mixer operating at high speed. The center-of-gravity matching design of the conical tank body and the triangular support further reduces the possibility of the equipment tipping over or shaking.

[0034] like Figure 1 and Figure 2As shown, each of the storage tanks 2 is fixedly suspended by a corresponding suspension frame 21; a feed hopper 23 is provided on the top surface of the storage tank 2.

[0035] By adopting the above technical solution, the independent suspension frame 21 allows the storage tank 2 to be freely arranged around the mixing tank 1, which makes it easy to adjust the number or position of the storage tanks according to production needs without modifying the overall support frame.

[0036] The feed hopper 23 is designed so that when the storage tank 2 needs to be filled with powder, the feeding operation can be carried out simply by aligning the inclined screw conveyor with the feed hopper 23; multiple storage tanks 2 can share one screw conveyor, reducing equipment investment costs. Preferably, an automatic gate valve (not shown in the figure) is provided at the discharge port inside the feed hopper 23, so that the gate valve is opened when adding material and closed after adding material to prevent the powder from getting damp.

[0037] like Figures 1-3 As shown, the arc-shaped track 4 is fixedly suspended to at least one suspension frame 21 via a mounting bracket 41 that is adapted to it.

[0038] By adopting the above technical solution, the mounting frame 41 rigidly connects the arc track 4 to the suspension frame 21, effectively resisting the radial torque and vibration generated when the feeding auger 3 moves, and avoiding track deformation or displacement.

[0039] Example 2

[0040] Combination Figure 1 , Figure 3 and Figure 4 As shown, based on the above embodiments, this embodiment further provides the following:

[0041] In this embodiment, as Figure 3 and Figure 4 As shown, an arc-shaped slide rail 42 is vertically arranged on the top surface of the arc-shaped track 4 along its arc-shaped center line. An arc-shaped slider 43 is circumferentially slidably connected to the arc-shaped slide rail 42. A support frame 5 is longitudinally arranged on the top surface of the arc-shaped slider 43.

[0042] By adopting the above technical solution, the arc-shaped slide rail 42 is set vertically along the center line of the arc-shaped track 4, forming a double-sided constraint with the arc-shaped slider 43, which effectively suppresses the radial swing of the feeding auger 3 and ensures that the feeding hopper 32 and the discharge port of the storage tank 2 are better aligned.

[0043] The weight of the auger head is transferred to the slider 43 through the longitudinal connection of the support frame 5, so that the force direction is always perpendicular to the plane of the slide rail 42, reducing the risk of lateral torque causing torsion of the track.

[0044] like Figure 1 and Figure 3 As shown, the longitudinal section of the arc-shaped slide rail 42 is a T-shaped structure.

[0045] By adopting the above technical solution, the longitudinal section of the arc-shaped slide rail 42 adopts a T-shaped structure to form a mechanical interlock with the arc-shaped slider 43, preventing the arc-shaped slider 43 from derailing during movement and ensuring the safety of continuous production.

[0046] like Figure 4 As shown, the support frame 5 includes a support plate 51 vertically connected to the top surface of the arc-shaped slider 43. A support rod 52 is vertically rotatably connected to the middle of the top surface of the support plate 51. An arc-shaped support plate 53 is fixedly connected to the top of the support rod 52 and is fixedly engaged with the bottom surface of the head of the feeding auger 3.

[0047] By adopting the above technical solution, the vertical rotational connection between the support rod 52 and the support plate 51 forms a composite support structure of "rotational pair + sliding pair"; radial movement is achieved by the arc-shaped slider 43 sliding along the arc-shaped slide rail 42 in the circumference; the rotation of the support rod 52 on the support plate 51 allows the feeding auger 3 to be finely adjusted in the horizontal plane to ensure accurate docking between the feeding hopper 32 and the discharge port of the storage tank 2; the arc-shaped support plate 53 can better fix and fit the feeding auger 3.

[0048] Example 3

[0049] Combination Figure 3 and Figure 4 As shown, based on the above embodiments, this embodiment further provides the following:

[0050] In this embodiment, the arc-shaped slider 43 is driven by the driving component 6 provided on its inner side to move circumferentially along the arc-shaped slide rail 42;

[0051] The drive assembly 6 includes a suspension plate 61 that is horizontally fixed to the inner side of the arc-shaped slider 43. A servo motor 62 is longitudinally fixed on the top surface of the suspension plate 61. The power output end of the servo motor 62 passes through the suspension plate 61 and is axially connected to a drive gear 63. The drive gear 63 meshes with an arc-shaped rack 64 that is fixedly connected to the inner arc surface of the arc-shaped track 4.

[0052] By adopting the above technical solution, the drive component 6 can automatically adjust the position of the moving feeding auger 3 without manual movement. In the drive component 6, the servo motor 62 drives the drive gear 63 to rotate along the arc rack 64, thereby driving the arc slider 43 to move along the arc slide rail 42, so that the feeding hopper 32 of the feeding auger 3 can be moved to align with the discharge port of each storage tank 2.

[0053] Working principle and usage process of this utility model:

[0054] In use, this invention first loads different powder fillers into each storage tank 2 via an external screw feeder aligned with the feed hopper 23. The main material and functional additives are then fed into the mixing tank 1 through the feeding gate 15. The servo motor 62 is initialized, and the drive gear 63 meshes with the arc-shaped rack 64 to calibrate the zero-point position.

[0055] Then, the servo motor 62 operates, driving the arc-shaped slider 43 to move along the arc-shaped slide rail 42 through the meshing transmission of the drive gear 63 and the arc-shaped rack 64. With the support rod 52 of the support frame 5 in cooperation with the rotating pair, the head of the feeding auger 3 is guided to be positioned below the target storage tank 2, and the feeding hopper 32 is connected to the discharge port.

[0056] Next, the gate valve 22 corresponding to storage tank 2 is opened, and the powder enters the feeding auger 3 through the feeding hopper 32. The servo motor 62 remains in the positioning state, and the feeding auger 3 conveys the powder to the feed pipe 14 through the discharge pipe 31. The powder metering pump at the discharge port of storage tank 2 monitors the discharge amount in real time, and closes the gate valve 22 after the amount reaches the target.

[0057] Finally, the mixer 12 is started to fully mix the main material, functional additives, and powder filler in the mixing tank 1. The drive assembly 6 drives the feed hopper 32 of the feeding auger 3 to be positioned and moved sequentially to directly below the discharge port of each storage tank 2, repeating the feeding process. After mixing is completed, the gate valve 13 is opened to discharge the material.

[0058] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mixing device for biodegradable plastic processing, comprising a mixing tank (1) with a mixer (12) in the middle, wherein a gate valve (13) is provided at the bottom discharge port of the mixing tank (1), and an openable feeding door (15) is provided on its top surface, characterized in that: The mixing tank (1) has a feed pipe (14) on one side of its top surface. Multiple storage tanks (2) are suspended around the outside of the mixing tank (1) with the feed pipe (14) as the center. Each storage tank (2) has a gate valve (22) at its bottom discharge port. A curved track (4) is horizontally suspended directly below the discharge port of multiple storage tanks (2). A feeding auger (3) is radially mounted between the curved track (4) and the feed pipe (14). A discharge pipe (31) is connected downward at the tail of the feeding auger (3). The discharge pipe (31) is rotatably inserted into the feed pipe (14). A follower frame (5) is provided between the head of the feeding auger (3) and the curved track (4). The top of the follower frame (5) is rotatably supported and connected to the head of the feeding auger (3), and its bottom is circumferentially slidably connected to the top surface of the curved track (4). A feeding hopper (32) is connected upward at the head of the feeding auger (3). The feeding hopper (32) can move to directly below the discharge port of the corresponding storage tank (2) as the feeding auger (3) rotates circumferentially.

2. The mixing equipment for biodegradable plastic processing according to claim 1, characterized in that: The top surface of the arc track (4) is vertically provided with an arc slide rail (42) along its arc center line. The arc slide rail (42) is circumferentially slidably connected with an arc slider (43). The top surface of the arc slider (43) is longitudinally provided with a support frame (5).

3. The mixing equipment for biodegradable plastic processing according to claim 2, characterized in that: The support frame (5) includes a support plate (51) vertically connected to the top surface of the arc-shaped slider (43). A support rod (52) is vertically rotatably connected to the middle of the top surface of the support plate (51). An arc-shaped support plate (53) is fixedly connected to the top of the support rod (52) and is fixedly engaged with the bottom surface of the head of the feeding auger (3).

4. The mixing equipment for biodegradable plastic processing according to claim 2, characterized in that: The arc-shaped slider (43) is driven by the drive component (6) provided on its inner side to move circumferentially along the arc-shaped slide rail (42); The drive assembly (6) includes a suspension plate (61) that is horizontally fixed to the inner side of the arc-shaped slider (43). A servo motor (62) is longitudinally fixed on the top surface of the suspension plate (61). The power output end of the servo motor (62) passes through the suspension plate (61) and is axially connected to a drive gear (63). The drive gear (63) meshes with an arc-shaped rack (64) fixedly connected to the inner arc surface of the arc-shaped track (4).

5. The mixing equipment for biodegradable plastic processing according to claim 2, characterized in that: The longitudinal section of the arc-shaped slide rail (42) is a T-shaped structure.

6. The mixing equipment for biodegradable plastic processing according to claim 1, characterized in that: The mixing tank (1) has a conical structure and is fixedly supported by a triangular support frame (11).

7. The mixing equipment for biodegradable plastic processing according to claim 1, characterized in that: Each of the storage tanks (2) is fixedly suspended by a corresponding suspension frame (21); the top surface of the storage tank (2) is provided with a feed hopper (23).

8. The mixing equipment for biodegradable plastic processing according to claim 7, characterized in that: The arc-shaped track (4) is fixedly suspended to at least one suspension frame (21) by a mounting bracket (41) adapted to it.

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