A mixing device for raw materials in PET sheet production

Abstract

This utility model discloses a mixing device for PET sheet production raw materials, belonging to the technical field of mixing devices. It includes: a mixing cylinder; a circular opening at the top of the mixing cylinder; two stirring shafts disposed within the circular opening; the top ends of the stirring shafts rotatably connected to a mounting plate, and several stirring blades disposed on their surfaces; a first gear fitted onto a segment of the stirring shaft located above the mixing cylinder; a second gear meshing with one side of the first gear and connected to the bottom surface of the mounting plate; the mounting plate being driven to rotate by a servo motor mounted on the mixing cylinder, and having a through hole in its center; a shaft disposed within the through hole; the top of the shaft being fixedly connected to a top shell located above and fixedly connected to the mixing cylinder, and the bottom end extending below the mounting plate and disposed of a third gear; the third gear meshing with two second gears on its two sides respectively. This utility model, through a transmission mechanism, enables the stirring blades to rotate and revolve, resulting in excellent mixing performance.

Description

Technical Field

[0001] This utility model relates to the field of mixing device technology, specifically to a mixing device for raw materials in PET sheet production. Background Technology

[0002] In the production process of PET sheets, uniform mixing of raw materials is a key step in ensuring the quality of the sheets.

[0003] Most existing raw material mixing devices employ traditional impeller structures. This design results in a relatively simple flow path for the raw materials within the mixing container, making it difficult to achieve comprehensive, dead-angle-free mixing. Some devices use a fixed impeller speed, unable to flexibly adjust according to the characteristics of different raw materials and mixing requirements, leading to incomplete mixing of materials with high viscosity or significant particle size differences. Existing mixing devices lack effective control over the movement of raw materials during mixing, easily resulting in material stratification and uneven local mixing, reducing mixing efficiency and quality. Furthermore, due to poor mixing effects, repeated mixing is often required, increasing energy consumption, extending the production cycle, and raising production costs. Therefore, this invention provides a raw material mixing device for PET sheet production. Utility Model Content

[0004] The purpose of this invention is to provide a mixing device for raw materials in PET sheet production.

[0005] To solve the above-mentioned technical problems, the purpose of this utility model is achieved as follows:

[0006] A mixing device for raw materials in PET sheet production includes: a mixing cylinder; the mixing cylinder has a discharge port at the bottom and a feed port on the top side;

[0007] The mixing cylinder has a circular opening at the top; two stirring shafts are installed inside the circular opening; the bottom end of each stirring shaft extends to the bottom of the mixing cylinder, and the top end extends above the mixing cylinder and is rotatably connected to a mounting plate located above the mixing cylinder; a plurality of stirring blades are installed on the surface of each stirring shaft; a first gear is fitted on the section of the stirring shaft located above the mixing cylinder; a second gear connected to the bottom surface of the mounting plate is meshed on one side of the first gear; the mounting plate is driven to rotate by a servo motor installed on the mixing cylinder, and has a through hole in its center; a shaft is installed inside the through hole; the top of the shaft is fixedly connected to a top shell located above the mixing cylinder and fixedly connected to the mixing cylinder, and the bottom end extends below the mounting plate and is provided with a third gear; the two sides of the third gear mesh with two of the second gears respectively.

[0008] Based on the above scheme and as a preferred embodiment of the above scheme, a mounting platform is provided on the top of the mixing cylinder; the mounting platform is annular and arranged around the circular opening; the mounting plate is circular and rotatably connected to the top of the mounting platform.

[0009] Based on the above scheme and as a preferred embodiment of the above scheme, a rotating connection part is provided at the top center of the mounting plate; the rotating connection part is connected to the drive wheel provided on the top side of the mixing drum via a transmission belt; the drive wheel is connected to the servo motor connected to the top side of the mixing drum via a fixed plate.

[0010] Based on the above solution and as a preferred embodiment of the above solution, the outer cover of the servo motor is provided with a protective cover.

[0011] Based on the above scheme and as a preferred embodiment of the above scheme, the top shell cover is provided outside the mounting plate, mounting platform, transmission belt and drive wheel.

[0012] Based on the above scheme and as a preferred embodiment of the above scheme, a support frame is provided at the bottom of the mixing cylinder.

[0013] Compared with the prior art, this utility model has the following advantages and beneficial effects: This utility model uses a servo motor to drive the mounting plate to rotate. The rotation of the mounting plate will drive the first gear and the second gear to revolve around their axis, causing the stirring shaft and stirring blades to rotate around the axis of the mixing cylinder. At the same time, the fixed third gear does not rotate, and the second gear meshing with it will rotate on its own axis during the revolution, driving the first gear to rotate. The first gear drives the stirring shaft and stirring blades to rotate, realizing the rotation and revolution of the stirring blades, which can improve the mixing effect. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the structure of this utility model after concealing the top shell and protective cover.

[0016] Figure 3 This is a partial structural diagram of the present utility model.

[0017] Figure 4 This is a schematic diagram of the stirring shaft and transmission mechanism of this utility model.

[0018] In the diagram: 1. Mixing cylinder; 2. Discharge port; 3. Feed port; 4. Circular opening; 5. Stirring shaft; 6. Mounting plate; 7. Stirring blade; 8. First gear; 9. Second gear; 10. Servo motor; 11. Shaft; 12. Top shell; 13. Third gear; 14. Support frame; 15. Mounting platform; 16. Rotating connection; 17. Transmission belt; 18. Drive wheel; 19. Fixing plate; 20. Protective cover. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solution of this utility model, the preferred embodiments of this utility model are described below in conjunction with specific examples. However, it should be understood that the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. For better illustration of this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable that some well-known structures and their descriptions may be omitted in the drawings for those skilled in the art. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0020] like Figure 1 and Figure 2 As shown, a PET sheet production raw material mixing device includes: a mixing cylinder 1, which has a cylindrical structure, a discharge port 2 at the bottom, and a feed port 3 on the top side.

[0021] A circular opening 4 is provided at the center of the top of the mixing cylinder 1, and two movable stirring shafts 5 are provided inside the circular opening 4. The bottom end of the stirring shaft 5 extends to the bottom of the mixing cylinder 1, and the top end extends to the top of the mixing cylinder 1 and is rotatably connected to the mounting plate 6 located above the mixing cylinder 1. Several stirring blades 7 are provided on the surface.

[0022] A first gear 8 is fitted onto the section of the stirring shaft 5 located above the mixing cylinder 1. The first gear 8 is fixedly connected to the stirring shaft 5 and rotates synchronously with it. A second gear 9, which is connected to the bottom surface of the mounting plate 6, meshes with one side of the first gear 8.

[0023] like Figure 3 and Figure 4 As shown, the mounting plate 6 is driven to rotate by a servo motor 10 mounted on the mixing cylinder 1. A through hole is provided in the center of the mounting plate 6, and a shaft 11 is installed within the through hole. The shaft 11 and the mounting plate 6 are rotatable relative to each other. The top end of the shaft 11 is fixedly connected to a top shell 12 located above and fixedly connected to the mixing cylinder 1, while the bottom end extends below the mounting plate 6 and is equipped with a third gear 13. The third gear 13 meshes with two second gears 9 on its two sides. The shaft 11 and the third gear 13 are fixedly connected to the top shell 12 and remain stationary. The mounting plate 6, the first gear 8, and the second gear 9 move with the servo motor 10.

[0024] The mixing cylinder 1 is provided with a mounting platform 15 at its top. The mounting platform 15 is annular and is arranged around the circular opening 4, and is concentric with the circular opening 4. The mounting plate 6 is circular and is rotatably connected to the top of the mounting platform 15, and is fixed in position relative to the mounting platform 15.

[0025] A rotating connection part 16 is provided at the center of the top of the mounting plate 6. The rotating connection part 16 is connected to a drive wheel 18 located on the top side of the mixing drum 1 via a transmission belt 17. The drive wheel 18 is connected to a servo motor 10 connected to the top side of the mixing drum 1 via a fixing plate 19. The servo motor 10 drives the drive wheel 18 to rotate, and the drive wheel 18 drives the rotating connection part 16 and the mounting plate 6 to rotate. Preferably, the servo motor 10 is covered with a protective cover 20 to provide isolation and protection. The protective cover 20 is connected to the fixing plate 19 and located on the side of the mixing drum 1.

[0026] The top shell 12 is installed outside the mounting plate 6, mounting platform 15, transmission belt 17 and drive wheel 18, and encloses the transmission mechanism and circular opening 4 inside, serving as an isolation and protection function.

[0027] A support frame 14 is provided at the bottom of the mixing cylinder 1 to improve the support stability of the mixing cylinder 1. At the same time, a support rod connected to the support frame 14 is provided at the bottom of the protective cover 20 to improve the structural stability of the device.

[0028] During operation, the servo motor 10 drives the mounting plate 6 to rotate around its axis via the transmission belt 17. The mounting plate 6 drives the first gear 8 and the second gear 9 to revolve around the axis of the mounting plate 6. The stirring shaft 5 and the stirring blade 7 also revolve around the axis of the mounting plate 6 under the drive of the mounting plate 6. The third gear 13 is fixedly connected to the top shell 12 and remains stationary. When the second gear 9 rotates around the third gear 13, due to the meshing of the two, the second gear 9 will simultaneously rotate on its own axis, driving the first gear 8 to rotate on its own axis. The first gear 8 drives the stirring shaft 5 and the stirring blade 7 to rotate on their own axes, making the stirring blade 7 rotate and revolve synchronously, resulting in excellent stirring effect. The servo motor 10 is connected to a control device, and the operator can input control signals to the control device to control the opening, closing, and speed of the servo motor 10.

[0029] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A PET sheet production raw material mixing device, characterized by, include: Mixing cylinder (1); the mixing cylinder (1) has a discharge port (2) at the bottom and a feed port (3) on the top side; The mixing cylinder (1) has a circular opening (4) at the top; two stirring shafts (5) are installed inside the circular opening (4); the bottom end of the stirring shaft (5) extends to the bottom of the mixing cylinder (1), and the top end extends to the top of the mixing cylinder (1) and is rotatably connected to the mounting plate (6) located above the mixing cylinder (1), and a plurality of stirring blades (7) are provided on the surface; a first gear (8) is fitted on the section of the stirring shaft (5) located above the mixing cylinder (1); one side of the first gear (8) is engaged with a connecting plate (6) on the mounting plate (6). The mounting plate (6) has a second gear (9) on its bottom surface; the mounting plate (6) is driven to rotate by a servo motor (10) on the mixing cylinder (1), and has a through hole in its center; a shaft (11) is provided in the through hole; the top of the shaft (11) is fixedly connected to the top shell (12) which is located above the mixing cylinder (1) and fixedly connected to the mixing cylinder (1), and the bottom end extends to the bottom of the mounting plate (6) and is provided with a third gear (13); the two sides of the third gear (13) are respectively meshed with two second gears (9).

2. The PET sheet production raw material mixing device according to claim 1, characterized in that, The mixing cylinder (1) is provided with a mounting platform (15) at the top; the mounting platform (15) is annular and is arranged around the circular opening (4); the mounting plate (6) is circular and is rotatably connected to the top of the mounting platform (15).

3. The PET sheet production raw material mixing device according to claim 2, characterized in that, The mounting plate (6) has a rotating connection part (16) at the top center position; the rotating connection part (16) is connected to the drive wheel (18) on the top side of the mixing drum (1) via a transmission belt (17); the drive wheel (18) is connected to the servo motor (10) on the top side of the mixing drum (1) via a fixing plate (19).

4. The PET sheet production raw material mixing device according to claim 3, characterized in that, The servo motor (10) is covered with a protective cover (20).

5. The PET sheet production raw material mixing device according to claim 4, characterized in that, The top shell (12) covers the outside of the mounting plate (6), mounting platform (15), transmission belt (17) and drive wheel (18).

6. The PET sheet production raw material mixing device according to claim 1, characterized in that, The bottom of the mixing cylinder (1) is provided with a support frame (14).

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