Plastic melting device based on hot air circulation

Abstract

The utility model discloses a kind of plastic melting devices based on hot air circulation, it includes hot air circulation melting equipment body and fixed installation in the feeding pipe of hot air circulation melting equipment body top, the top of the hot air circulation melting equipment body is fixedly installed with fixed frame, the upper portion of fixed frame is fixedly installed with feeding storage hopper, the middle portion of hot air circulation melting equipment body top is fixedly installed with fixed hollow tube, rotatable disc is installed in the top of fixed hollow tube, and the top of disc and the bottom sliding of feeding storage hopper meets, two dosing pipes are fixedly installed in the disc and are penetrated, the bottom of two dosing pipes is equipped with opening and closing mechanism, the middle portion of fixed hollow tube is fixedly installed with the contact ring plate of two opening and closing mechanisms;The plastic melting device has automatic dosing structure, and the performance thereof can meet the use requirement of plastic hot air circulation melting processing.

Description

Technical Field

[0001] This utility model belongs to the field of conveying technology, specifically a plastic melting device based on hot air circulation. Background Technology

[0002] Plastic melt processing refers to the process of using heat and pressure to transform solid plastic raw materials into a fluid molten state, and then shaping them into the desired shape using molds or other molding tools. The core of this process is to give the plastic molecular chains enough energy to overcome the binding forces between molecules, so that they can deform under the action of external forces. Common melt processing methods include injection molding (injecting molten plastic into a mold), extrusion (continuously extruding molten plastic through a die), blow molding (blowing molten plastic into hollow products), and calendering (flattening molten plastic into films or sheets), etc.

[0003] Existing authorized patents (publication number: CN108515637B) and (publication number: CN219213726U) disclose a horizontal hot air melting waste plastic recycling granulator. Both patents involve a one-time feeding operation, which causes the plastic to accumulate and heat unevenly, affecting the quality of melting and reducing processing efficiency. Therefore, improvements are needed to address these issues. Utility Model Content

[0004] To achieve the above objectives, this utility model provides the following technical solution: a plastic melting device based on hot air circulation, comprising a hot air circulation melting equipment body and a feeding pipe fixedly installed on the top of the hot air circulation melting equipment body. A fixed frame is fixedly installed on the top of the hot air circulation melting equipment body, and a feeding storage hopper is fixedly installed on the upper part of the fixed frame. A fixed hollow tube is fixedly installed in the middle of the top of the hot air circulation melting equipment body. A rotatable disc is installed on the top of the fixed hollow tube, and the top of the disc slides into contact with the bottom of the feeding storage hopper. Two quantitative feeding pipes are symmetrically fixedly installed through the disc. An opening and closing mechanism is installed at the bottom of each of the two quantitative feeding pipes. A ring plate that contacts the two opening and closing mechanisms is fixedly installed in the middle of the fixed hollow tube.

[0005] Preferably, a fixed plate is fixedly installed on the top of the fixed hollow tube, and first ball bearings that contact the bottom of the disc are installed equidistantly in a ring on the top of the fixed plate. A rotating shaft is rotatably installed through the middle of the fixed plate, and the top of the rotating shaft is fixedly connected to the middle of the bottom of the disc. A motor is installed on the top of the hot air circulating melting equipment body located inside the fixed hollow tube, and the output end of the motor is fixedly connected to the bottom of the rotating shaft.

[0006] Preferably, both opening and closing mechanisms include fixed blocks fixedly installed at the lower part of the two metering feed tubes, rotating blocks rotatably installed at the lower part of the two fixed blocks via a movable shaft, baffles matching the outer diameter of the metering feed tubes fixedly installed at one end of the two rotating blocks, side plates fixedly installed on both sides of the top of the two baffles, inverted T-shaped blocks fixedly installed at the other end of the two rotating blocks, and second ball bearings fixedly installed at one end of the two inverted T-shaped blocks.

[0007] Preferably, the bottom of the ring plate above the feeding tube has a groove to facilitate the movement and adjustment of the second ball bearing.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows: This plastic melting device has an automatic quantitative feeding structure, which can continuously perform quantitative feeding operations, thereby effectively avoiding the accumulation of plastic and improving the quality and efficiency of plastic melting processing. Attached Figure Description

[0009] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0010] In the attached diagram:

[0011] Figure 1 This is a front view structural diagram of the plastic melting device based on hot air circulation according to this utility model;

[0012] Figure 2 This is a front section diagram of the plastic melting device based on hot air circulation according to this utility model;

[0013] Figure 3 This utility model Figure 2 A schematic diagram of a partial structure;

[0014] Figure 4 This utility model Figure 3 A magnified structural diagram at point A;

[0015] In the diagram: 1. Hot air circulating melting equipment body; 2. Feeding pipe; 3. Fixed frame; 4. Feeding and storage hopper; 5. Fixed hollow tube; 6. Disc; 7. Quantitative feeding pipe; 8. Opening and closing mechanism; 9. Ring plate; 10. Fixed disc; 11. First ball bearing; 12. Rotating shaft; 13. Motor; 14. Fixed block; 15. Rotating block; 16. Baffle; 17. Side plate; 18. Inverted T-shaped block; 19. Second ball bearing; 20. Groove. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0017] Depend on Figures 1 to 4 The present invention includes a hot air circulating melting device body 1 and a feeding pipe 2 fixedly installed on the top of the hot air circulating melting device body 1. The hot air circulating melting device body 1 and the feeding pipe 2 have the same structure and function as the horizontal hot air melting waste plastic recycling granulator in announcement number CN108515637B. An inverted U-shaped plate is fixedly installed on the top of the feeding pipe 2, and oblique openings are opened at the upper parts of both ends of the inverted U-shaped plate. A fixing frame 3 is fixedly installed on the top of the hot air circulating melting device body 1, and a feeding storage hopper 4 is fixedly installed on the upper part of the fixing frame 3. A fixed hollow tube 5 is fixedly installed in the middle of the top of the hot air circulating melting device body 1. A rotatable disc 6 is installed on the top of the hopper, and the top of the disc 6 slides into contact with the bottom of the feeding hopper 4. Two quantitative feeding tubes 7 are symmetrically fixedly installed through the disc 6. The feeding tube 2 is located below the circular movement trajectory of the quantitative feeding tube 7, and the circular movement trajectory of the quantitative feeding tube 7 is located directly below the bottom outlet of the feeding hopper 4. At the same time, the inner diameter of the quantitative feeding tube 7 is larger than the inner diameter of the bottom outlet of the feeding hopper 4, and the outer diameter of the quantitative feeding tube 7 is the same as the outer diameter of the bottom outlet of the feeding hopper 4. An opening and closing mechanism 8 is installed at the bottom of both quantitative feeding tubes 7. A ring plate 9 that contacts the two opening and closing mechanisms 8 is fixedly installed in the middle of the fixed hollow tube 5.

[0018] A fixed plate 10 is fixedly installed on the top of the fixed hollow tube 5. The top of the fixed plate 10 is equidistantly equipped with first ball bearings 11 that contact the bottom of the disc 6. A rotating shaft 12 is rotatably installed through the middle of the fixed plate 10. The top of the rotating shaft 12 is fixedly connected to the middle of the bottom of the disc 6. A motor 13 is installed on the top of the hot air circulating melting equipment body 1 inside the fixed hollow tube 5. The output end of the motor 13 is fixedly connected to the bottom of the rotating shaft 12, so that the disc 6 and the two quantitative feeding tubes 7 can be effectively driven to rotate, so that the two quantitative feeding tubes 7 can alternately perform feeding operations.

[0019] Specifically, the two metering feed tubes 7 are located above the feed tube 2 and directly below the bottom outlet of the feeding hopper 4, respectively. Since one of the metering feed tubes 7 is aligned with the bottom of the feeding hopper 4, the plastic granules inside the feeding hopper 4 will automatically fill the interior of one of the metering feed tubes 7, and the opening and closing mechanism 8 at the bottom of one of the metering feed tubes 7 will seal its bottom to prevent it from falling out. The opening and closing mechanism 8 on the metering feed tube 7 located above the feed tube 2 will be opened by the ring plate 9, so that the plastic granules inside the metering feed tube 7 will be automatically added into the interior of the hot air circulating melting equipment body 1.

[0020] Then, the timed motor 13 drives the rotating shaft 12 to rotate. The rotation of the rotating shaft 12 drives the disc 6, the two quantitative feeding tubes 7, and the two opening and closing mechanisms 8 to rotate, causing the two quantitative feeding tubes 7 to exchange positions. The two opening and closing mechanisms 8 also move with the quantitative feeding tubes 7 and are closed by the ring plate 9. At this time, the quantitative feeding tube 7 filled with plastic granules moves above the feeding tube 2 and automatically adds plastic granules into the hot air circulating melting equipment body 1 again through the opening and closing mechanism 8. The empty quantitative feeding tube 7 moves below the feeding hopper 4, and the opening and closing mechanism 8 at its bottom closes through the ring plate 9. At this time, the plastic granules in the feeding hopper 4 are automatically added into it. At the same time, the timed rotation of the disc 6 can alternately exchange the positions of the two quantitative feeding tubes 7, thereby realizing alternating automatic feeding and automatic discharging.

[0021] Both opening and closing mechanisms 8 include fixed blocks 14 fixedly installed at the lower part of the two metering feed tubes 7. Rotating blocks 15 are rotatably installed at the lower part of the two fixed blocks 14 via movable shafts. A baffle 16 matching the outer diameter of the metering feed tube 7 is fixedly installed at one end of each of the two rotating blocks 15. Side plates 17 are fixedly installed on both sides of the top of the two baffles 16. An inverted T-shaped block 18 is fixedly installed at the other end of each of the two rotating blocks 15. A second ball bearing 19 is fixedly installed at one end of each of the two inverted T-shaped blocks 18. The bottom of the ring plate 9 above the feed tube 2 has a groove 20 that facilitates the movement and adjustment of the second ball bearing 19. The groove 20 has an upward sloping section, a horizontal middle section, and a downward sloping section, which can effectively adjust the opening and closing of the opening and closing mechanism 8.

[0022] Specifically, when the metering feeding tube 7 moves the opening and closing mechanism 8, the second ball 19 moves towards the groove 20 at the bottom of the ring plate 9. When the second ball 19 moves into the groove 20, due to the weight of the baffle 16 and the side plate 17, the rotating block 15 will rotate, causing the inverted T-shaped block 18 and the second ball 19 to rotate and move into the groove 20. The rotating and opening baffle 16 and side plate 17 will open the bottom of the metering feeding tube 7, so that the plastic granule raw material inside the metering feeding tube 7 falls into the feeding tube 2 through the baffle 16 and the side plate 17.

[0023] When the second ball 19 moves out of the inside of the groove 20, the compression of the groove 20 will cause the second ball 19 and the groove 20 to drive the rotating block 15, the baffle 16 and the side plate 17 to rotate, thereby closing the baffle 16 at the bottom of the metering tube 7, so that the metering tube 7 can effectively add material.

[0024] This plastic melting device features an automatic quantitative feeding structure, which can continuously perform quantitative feeding operations, effectively preventing plastic from piling up and improving the quality and efficiency of plastic melting processing. Furthermore, this automatic quantitative feeding structure is simple in design, convenient to use, and has stable and reliable adjustment and feeding. Its performance meets the requirements of plastic hot air circulation melting processing.

Claims

1. A plastic melting device based on hot air circulation, comprising a hot air circulation melting equipment body (1) and a feeding pipe (2) fixedly installed on the top of the hot air circulation melting equipment body (1), characterized in that: A fixed frame (3) is fixedly installed on the top of the hot air circulating melting equipment body (1). A feeding hopper (4) is fixedly installed on the upper part of the fixed frame (3). A fixed hollow tube (5) is fixedly installed in the middle of the top of the hot air circulating melting equipment body (1). A disc (6) is installed on the top of the fixed hollow tube (5). The top of the disc (6) is slidably connected to the bottom of the feeding hopper (4). Two quantitative feeding tubes (7) are installed on the disc (6). An opening and closing mechanism (8) is installed at the bottom of each of the two quantitative feeding tubes (7). A ring plate (9) is fixedly installed in the middle of the fixed hollow tube (5).

2. The plastic melting device based on hot air circulation according to claim 1, characterized in that: A fixed plate (10) is fixedly installed on the top of the fixed hollow tube (5). The top of the fixed plate (10) is equidistantly equipped with first ball bearings (11) that contact the bottom of the disc (6). A rotating shaft (12) is rotatably installed through the middle of the fixed plate (10). The top of the rotating shaft (12) is fixedly connected to the middle of the bottom of the disc (6). A motor (13) is installed inside the fixed hollow tube (5). The output end of the motor (13) is fixedly connected to the bottom of the rotating shaft (12).

3. The plastic melting device based on hot air circulation according to claim 1, characterized in that: Both opening and closing mechanisms (8) include fixed blocks (14) fixedly installed at the lower part of the two metering feed tubes (7). Rotating blocks (15) are rotatably installed at the lower part of the two fixed blocks (14) via a movable shaft. Baffles (16) are fixedly installed at one end of the two rotating blocks (15). Side plates (17) are fixedly installed on both sides of the top of the two baffles (16). Inverted T-shaped blocks (18) are fixedly installed at the other end of the two rotating blocks (15). Second ball bearings (19) are fixedly installed at one end of the two inverted T-shaped blocks (18).

4. A plastic melting device based on hot air circulation according to claim 3, characterized in that: The bottom of the ring plate (9) above the feeding pipe (2) has a groove (20) to facilitate the movement and adjustment of the second ball (19).

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