A plastic pellet mixing device

Abstract

This utility model discloses a plastic granule mixing device, comprising: a mixing hopper, which is a conical cavity with an opening at the top; a supporting top plate, which is placed on top of the mixing hopper; a conveying pipe fixedly connected to the bottom of the supporting top plate; a transmission pipe rotatably connected inside the conveying pipe; the transmission pipe rotatably connected to the bottom of the mixing hopper; and a spiral blade fixedly connected to the outside of the transmission pipe for vertical circulation conveying and drying of materials. The beneficial effects of this utility model are: the transmission pipe drives the spiral blade to convey the material from the bottom of the conveying pipe upwards, so that the material moves upwards along the conveying pipe and re-enters the mixing hopper, realizing the vertical tumbling and conveying of the material; at the same time, the stirring part outside the transmission pipe stirs the material inside the mixing hopper. The combination of circulation conveying and rotational stirring allows the material to be fully mixed in the device, improving the uniformity of mixing.

Description

Technical Field

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

[0002] Plastic granules, also known as plastic pellets, are raw materials used for storing, transporting, and processing plastics in a semi-finished form. Plastic molding primarily involves shaping plastics into finished products, a process requiring multiple coordinated steps. First, the raw materials need to be mixed and stirred to ensure a more uniform mixture of different types of plastic granules during melting and molding, thereby improving the plastic's wear resistance and strength. Existing mixing devices use multiple stirring rods rotating within a container, which cannot agitate the material at the bottom, creating dead zones and reducing the uniformity of mixing. Utility Model Content

[0003] The purpose of this invention is to provide a plastic granule mixing device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a plastic granule mixing device, comprising:

[0005] A mixing hopper, which is a conical cavity with an opening at the top;

[0006] A supporting top plate is placed on top of the mixing hopper. A conveying pipe is fixedly connected to the bottom of the supporting top plate. A transmission pipe is rotatably connected inside the conveying pipe. The transmission pipe is rotatably connected to the bottom of the mixing hopper. Spiral blades are fixedly connected to the outside of the transmission pipe for vertical circulation conveying and drying of materials. A stirring part is provided outside the transmission pipe and below the conveying pipe.

[0007] A cover plate is rotatably positioned on one side of the supporting top plate. The end of the supporting top plate is provided with a limiting part to restrict the cover plate to be in a vertical or horizontal state.

[0008] Preferably, a support frame is fixedly connected to the bottom of the mixing hopper, and a movable roller is installed on one side of the bottom of the support frame.

[0009] Preferably, a drive motor is fixedly connected to the middle of the support frame, and the output end of the drive motor is connected to the transmission pipe through a transmission belt assembly.

[0010] Preferably, a discharge pipe is fixedly connected to one side of the bottom of the mixing hopper, and a baffle plate is slidably connected to the middle of the discharge pipe.

[0011] Preferably, the spiral blades are slidably connected to the inner wall of the conveying pipe, and the bottom of the conveying pipe has inlet ports on both sides, and the top of the conveying pipe has outlet ports on both sides.

[0012] Preferably, an air outlet is provided on the outer side of the transmission pipe, a rotary joint is installed on the top of the transmission pipe, a heating box is fixedly connected to the top of the supporting top plate, and the air outlet of the heating box is connected to the air inlet of the rotary joint.

[0013] Preferably, the stirring part includes a stirring rod one that is equidistantly fixed to the outside of the transmission pipe, the stirring rod one being inclined along the inner wall of the mixing hopper, and a stirring rod two being fixed to the outside of the stirring rod one.

[0014] Preferably, the limiting part includes a pin that is slidably disposed on the top of the supporting top plate, one end of the pin being connected to the top of the supporting top plate by a compression spring, and one end of the cover plate having a limiting groove that cooperates with the pin.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: the transmission pipe drives the spiral blades to convey the material from the bottom of the conveying pipe upwards, so that the material moves upwards along the conveying pipe and re-enters the mixing hopper, realizing the material's up-and-down tumbling conveying; at the same time, the stirring part on the outside of the transmission pipe stirs the material inside the mixing hopper. The combination of circulating conveying and rotary stirring allows the material to be fully mixed in the device, improving the uniformity of mixing. The stirring part includes a stirring rod one that is equidistantly fixed to the outside of the transmission pipe and inclined along the inner wall of the mixing hopper, and a stirring rod two that is fixed to the outside of the stirring rod one; so that the material can be mixed more thoroughly when it is stirred and tumbled; a rotary joint is installed at the top of the transmission pipe and connected to the air outlet of the heating box at the top of the supporting top plate; an electric heating wire is installed in the heating box, which can heat the incoming air into hot air. The hot air contacts the material entering the conveying pipe through the air outlet on the outside of the transmission pipe, exchanging heat with the material and realizing the drying process. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the pin of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the stirring rod of this utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the mixing hopper of this utility model.

[0020] In the diagram: 1. Mixing hopper; 2. Support frame; 3. Moving rollers; 4. Discharge pipe; 5. Baffle plate; 6. Drive motor; 7. Transmission pipe; 8. Spiral blades; 9. Air outlet; 10. Stirring rod one; 11. Stirring rod two; 12. Conveying pipe; 13. Support top plate; 14. Discharge port; 15. Inlet; 16. Rotary joint; 17. Heating box; 18. Cover plate; 19. Pin; 20. Compression spring. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1 , 2 As shown in Figures 3 and 4, this utility model provides a technical solution: a plastic granule mixing device, comprising: a mixing hopper 1, which is a conical cavity with an opening at the top; a supporting top plate 13 is bolted to the top of the mixing hopper 1, a conveying pipe 12 is fixedly connected to the bottom of the supporting top plate 13, a transmission pipe 7 is rotatably connected inside the conveying pipe 12, the transmission pipe 7 is rotatably connected to the supporting top plate 13, the transmission pipe 7 passes through the bottom of the mixing hopper 1 and is rotatably connected to the mixing hopper 1, a spiral blade 8 is fixedly connected to the outside of the transmission pipe 7 for vertically circulating conveying and drying materials, a stirring part is provided on the outside of the transmission pipe 7 and below the conveying pipe 12; a cover plate 18 is hinged to one side of the supporting top plate 13, and a limiting part is provided at the end of the supporting top plate 13 to limit the cover plate 18 to be in a vertical or horizontal state.

[0023] It should be noted that in this embodiment, a controller and control buttons are provided. After the cover plate 18 is flipped open, it is limited by the limiting part to make it in a vertical state. The material to be mixed is poured into the mixing hopper 1. The drive motor 6 is controlled to drive the transmission pipe 7 to rotate. The transmission pipe 7 drives the stirring part to stir the material inside the mixing hopper 1. At the same time, the material enters the conveying pipe 12 under the action of extrusion. The transmission pipe 7 conveys the material upward through the spiral blades 8, so that it moves upward along the conveying pipe 12 and enters the mixing hopper 1 again. In this way, the material is conveyed up and down and stirred at the same time.

[0024] In one embodiment, a support frame 2 is fixedly connected to the bottom of the mixing hopper 1, a movable roller 3 is installed on one side of the bottom of the support frame 2, and a drive motor 6 is fixedly connected to the middle of the support frame 2. The output end of the drive motor 6 is connected to the transmission pipe 7 through a transmission belt assembly.

[0025] It should be noted that in this embodiment, the transmission belt assembly includes a small pulley fixedly connected to the output end of the drive motor 6 and a large pulley fixedly connected to the bottom of the transmission tube 7. Both the small pulley and the large pulley are multi-groove pulleys and are connected by a transmission belt. The moving roller 3 drives the transmission tube 7 to rotate through the transmission belt assembly. When moving the equipment, the mixing hopper 1 is tilted so that the moving roller 3 contacts the ground, thereby facilitating the movement of the entire equipment.

[0026] In one embodiment, a discharge pipe 4 is fixedly connected to one side of the bottom of the mixing hopper 1, and a baffle plate 5 is slidably connected to the middle of the discharge pipe 4.

[0027] It should be noted that in this embodiment, the discharge pipe 4 is inclined downward and is connected to the inside of the mixing hopper 1. When the baffle plate 5 is pulled out from the discharge pipe 4, the material flows downward along the discharge pipe 4.

[0028] In one embodiment, the spiral blade 8 is slidably connected to the inner wall of the conveying pipe 12, and the bottom of the conveying pipe 12 is provided with inlet ports 15 on both sides, and the top of the conveying pipe 12 is provided with outlet ports 14 on both sides.

[0029] It should be noted that in this embodiment, a space for the stirring part to move is provided between the conveying pipe 12 and the bottom of the mixing hopper 1. Under the action of gravity, the material enters the conveying pipe 12 through the inlet 15. The drive motor 6 drives the spiral blade 8 to rotate inside the conveying pipe 12 through the transmission pipe 7, thereby conveying the material entering the conveying pipe 12. Since the top of the conveying pipe 12 is blocked by the supporting top plate 13, the material flows out from the outlet 14. During the conveying process of the transmission pipe 7, the material rolls and mixes with each other and then flows out through the outlet 14, thereby circulating and conveying the bottom material upward.

[0030] In one embodiment, an air outlet 9 is provided on the outer side of the transmission pipe 7, a rotary joint 16 is installed on the top of the transmission pipe 7, a heating box 17 is fixedly connected to the top of the supporting top plate 13, and the air outlet of the heating box 17 is connected to the air inlet of the rotary joint 16.

[0031] It should be noted that in this embodiment, the heating box 17 is a metal box with an insulation layer on the outside. The heating wire is installed inside the metal box. When the material inside the mixing hopper 1 needs to be dried, the air outlet of the blower is connected to the flange on one side of the heating box 17. The air is heated by the heating box 17 and then enters the transmission pipe 7. The air outlet 9 on the outside of the transmission pipe 7 contacts the material entering the conveying pipe 12, thereby exchanging heat with the material. At the same time, the hot air heats the conveying pipe 12. The stirring part stirs the material and squeezes it out of the conveying pipe 12 for drying again.

[0032] In one embodiment, the stirring unit includes a stirring rod 10 fixedly at equal intervals to the outside of the transmission tube 7. The stirring rod 10 is inclined along the inner wall of the mixing hopper 1, and a stirring rod 21 is fixedly connected to the outside of the stirring rod 10.

[0033] It should be noted that in this embodiment, the stirring rod 10 is inclined at a similar angle to the mixing hopper 1, and the stirring rod 21 is inclined at a vertical angle to the mixing hopper 1. The transmission pipe 7 drives the stirring rod 10 and the stirring rod 211 to stir between the conveying pipe 12 and the inner wall of the mixing hopper 1, so that the material coming out of the discharge port 14 comes into contact with the stirring rod 10 and the stirring rod 21.

[0034] In one embodiment, the limiting part includes a pin 19 that is slidably disposed on the top of the supporting top plate 13. One end of the pin 19 is connected to the top of the supporting top plate 13 via a compression spring 20. One end of the cover plate 18 is provided with a limiting groove that cooperates with the pin 19. The pin 19 has a "7" shaped structure and a long groove is provided in the middle of the pin 19. A metal block that is slidably connected to the long groove is fixed to the top of the supporting top plate 13.

[0035] It should be noted that, in this embodiment, when the cover plate 18 needs to be vertically fixed, the pin 19 is pulled to the side, which stretches the compression spring 20, causing the pin 19 to separate from the cover plate 18. The cover plate 18 is then rotated to a vertical position, and the pin 19 is inserted into the groove at the end of the cover plate 18, thereby limiting the position of the cover plate 18 and facilitating the pouring of materials. When the cover plate 18 is placed on top of the supporting top plate 13, one end of the pin 19 presses against the top of one end of the cover plate 18, thereby limiting the position of the cover plate 18.

[0036] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.

[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] 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 plastic particle mixing apparatus, characterized by: include: Mixing hopper (1), the mixing hopper (1) is a conical cavity with an opening at the top; A supporting top plate (13) is placed on top of the mixing hopper (1). A conveying pipe (12) is fixedly connected to the bottom of the supporting top plate (13). A transmission pipe (7) is rotatably connected inside the conveying pipe (12). The transmission pipe (7) is rotatably connected to the bottom of the mixing hopper (1). A spiral blade (8) is fixedly connected to the outside of the transmission pipe (7) for conveying and drying materials in an up-and-down circulation manner. A stirring part is provided on the outside of the transmission pipe (7) and below the conveying pipe (12). Cover plate (18) is rotatably placed on one side of the supporting top plate (13). The end of the supporting top plate (13) is provided with a limiting part to limit the cover plate (18) to be in a vertical or horizontal state.

2. A plastic pellet mixing apparatus as claimed in claim 1, wherein: The bottom of the mixing hopper (1) is fixedly connected to a support frame (2), and a movable roller (3) is installed on one side of the bottom of the support frame (2).

3. A plastics pellet mixing apparatus as claimed in claim 2, wherein: A drive motor (6) is fixedly connected to the middle of the support frame (2), and the output end of the drive motor (6) is connected to the transmission tube (7) through a transmission belt assembly.

4. The plastic pellet mixing apparatus of claim 1, wherein: A discharge pipe (4) is fixedly connected to one side of the bottom of the mixing hopper (1), and a baffle plate (5) is slidably connected to the middle of the discharge pipe (4).

5. The plastic pellet mixing apparatus of claim 1, wherein: The spiral blade (8) is slidably connected to the inner wall of the conveying pipe (12), and the bottom of the conveying pipe (12) is provided with inlet ports (15) on both sides, and the top of the conveying pipe (12) is provided with outlet ports (14) on both sides.

6. A plastics pellet mixing apparatus as claimed in claim 5, wherein: An air outlet (9) is provided on the outside of the transmission pipe (7), a rotary joint (16) is installed on the top of the transmission pipe (7), a heating box (17) is fixedly connected to the top of the supporting top plate (13), and the air outlet of the heating box (17) is connected to the air inlet of the rotary joint (16).

7. The plastic pellet mixing apparatus of claim 1, wherein: The stirring part includes a stirring rod (10) fixedly connected at equal intervals to the outside of the transmission tube (7). The stirring rod (10) is inclined along the inner wall of the mixing hopper (1). A stirring rod (11) is fixedly connected to the outside of the stirring rod (10).

8. The plastic pellet mixing apparatus of claim 1, wherein: The limiting part includes a pin (19) that is slidably disposed on the top of the supporting top plate (13). One end of the pin (19) is connected to the top of the supporting top plate (13) through a compression spring (20). One end of the cover plate (18) is provided with a limiting groove that cooperates with the pin (19).

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