A dispersion and stirring device for the production of biodegradable polyester materials

Abstract

This utility model relates to the field of biodegradable polyester material production technology, and more particularly to a dispersion and stirring device for biodegradable polyester material production. It includes a first stirring tank with a top opening and a second stirring tank with a bottom opening, the first and second stirring tanks being arranged opposite each other, and the first stirring tank being connected to the second stirring tank via a flange. A support plate is provided on the inner side between the second and first stirring tanks, and the support plate has several spaced-apart fan-shaped grooves. A first sleeve is provided at the center of the upper part of the support plate. This utility model, through the vertically arranged first and second stirring tanks, combined with the support plate, fan-shaped grooves, and fan-shaped plates, achieves a "batch-mixing-merging" process for materials, avoiding uneven mixing caused by material accumulation. The first and second stirring blades are located in the upper and lower tanks respectively, allowing simultaneous mixing of materials in different areas, improving overall mixing efficiency and reaction uniformity.

Description

Technical Field

[0001] This utility model relates to the field of biodegradable polyester material production technology, and in particular to a dispersion and stirring device for biodegradable polyester material production. Background Technology

[0002] Biodegradable polyesters are a general term for biodegradable polyester plastics, mainly including polybutylene succinate (PBS), polybutylene succinate-adipate (PBSA), polybutylene terephthalate-succinate (PBST), and polybutylene terephthalate-adipate (PBAT). These materials are formed by the condensation polymerization of petroleum-based diacids and diols, and possess excellent processing properties, heat resistance, and mechanical properties, while also being biodegradable.

[0003] Most biodegradable polyesters are in granular form. During production, a stirring device is used to agitate the polyester, improving the uniformity of the reaction and increasing reaction efficiency. However, during stirring, all reactants need to be placed in the same container simultaneously. The large accumulation of materials, with some materials spaced far apart, makes it difficult to ensure sufficient contact between materials in a short time, leading to decreased contact efficiency and consequently, reduced reaction efficiency. Therefore, we propose a dispersion and stirring device for the production of biodegradable polyester materials. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned shortcomings in the existing technology by proposing a dispersion and stirring device for the production of biodegradable polyester materials.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a dispersion and stirring device for the production of biodegradable polyester materials, comprising a first stirring tank with a top opening and a second stirring tank with a bottom opening, the first stirring tank and the second stirring tank being arranged opposite to each other, and the first stirring tank being connected to the second stirring tank via a flange;

[0006] A support plate is provided on the inner side between the second mixing tank and the first mixing tank. The support plate has several fan-shaped grooves arranged at intervals. A first sleeve is provided at the center of the upper part of the support plate. Several first stirring blades are installed on the side of the first sleeve at intervals. The top of the first sleeve penetrates the top of the second mixing tank and is rotatably connected to the second mixing tank. A first drive mechanism is provided on the top of the first sleeve to drive its rotation. A first connecting shaft is built into the first sleeve and is rotatably connected to the first sleeve. The top of the first connecting shaft extends to the outside of the first sleeve and is connected to a first drive motor. The first drive motor is connected to the second mixing tank through a bracket. The bottom of the first connecting shaft is rotatably mounted on the support plate. Several fan-shaped plates are installed on the bottom side of the first connecting shaft at intervals. The fan-shaped plates correspond one-to-one with the fan-shaped grooves, and the bottom surface of the fan-shaped plates is fitted with the top surface of the support plate with a clearance.

[0007] A second connecting shaft is rotatably mounted at the bottom center of the support plate. Multiple second stirring blades are installed on the side of the second connecting shaft at intervals. The bottom of the second connecting shaft passes through the bottom of the first stirring tank and is connected to a third drive motor. The third drive motor is connected to the first stirring tank through a bracket, and the second connecting shaft is rotatably connected to the first stirring tank.

[0008] Preferably, a fan-shaped material collection trough is installed on one side of the bottom of the first mixing tank. The material collection trough is connected to the first mixing tank and is coaxially arranged with the second connecting shaft. A discharge pipe is installed at the bottom of the material collection trough, and a solenoid valve is installed on the discharge pipe. At least one material-pushing plate is installed on the bottom side of the first sleeve. The material-pushing plate is perpendicular to the support plate, and the bottom of the material-pushing plate is clearance-fitted with the top surface of the fan-shaped plate.

[0009] Preferably, a second sleeve is provided through the center of the bottom of the first mixing tank. The second sleeve is sleeved on the second connecting shaft and is rotatably connected to the first mixing tank and the second connecting shaft. A second driving mechanism is provided at the bottom of the second sleeve to drive its rotation. A fan-shaped cover plate is connected to one side of the second sleeve. The fan-shaped cover plate corresponds to the material collection trough and has an arc-shaped cut surface on one side.

[0010] Preferably, the second drive mechanism includes a third gear, which is coaxially mounted on the bottom of the second sleeve. A fourth gear meshes with the side of the third gear, and a fourth drive motor is coaxially mounted on the fourth gear. The fourth drive motor is connected to the first mixing tank via a bracket.

[0011] Preferably, the first drive mechanism includes a first gear, which is coaxially mounted on the top of the first sleeve, and a second gear meshes with the side of the first gear. A second drive motor is coaxially mounted on the second gear, and the second drive motor is connected to the second mixing tank through a bracket.

[0012] Preferably, an annular support base is installed along the top inner wall of the first mixing tank, the edge of the support plate corresponds to the support base, and the edge of the support plate is in clearance fit with the inner wall of the first mixing tank.

[0013] Preferably, a feed inlet is installed on one side of the top of the second mixing tank, a sealing cap is provided on the top of the feed inlet, and at least three spaced support legs are installed at the bottom edge of the first mixing tank.

[0014] The design scheme proposed in this utility model has the following beneficial effects in application:

[0015] 1. This utility model uses a first and second mixing tank arranged vertically, along with a support plate, a fan-shaped groove, a fan-shaped plate, and other structures, to achieve a "batch-mixing-merging" process for materials, avoiding uneven mixing caused by material accumulation. The first and second mixing blades are located in the upper and lower tanks respectively, which can simultaneously mix materials in different areas, improving overall mixing efficiency and reaction uniformity.

[0016] 2. By rotating the material-pushing plate, this utility model can clean up the material remaining on the support plate, ensuring that the material completely enters the first mixing tank and reducing waste; while rotating the fan-shaped cover plate can also clean up the material at the bottom of the first mixing tank, ensuring that the material is completely discharged. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0019] Figure 3 This is a schematic diagram of the internal structure of the first mixing tank of this utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of the second mixing tank of this utility model.

[0021] In the diagram: 1. First mixing tank; 2. Second mixing tank; 3. Support plate; 4. Sector groove; 5. Support base; 6. First connecting shaft; 7. Sector plate; 8. First drive motor; 9. First sleeve; 10. First stirring blade; 11. Feeding plate; 12. First gear; 13. Second gear; 14. Second drive motor; 15. Second connecting shaft; 16. Second stirring blade; 17. Third drive motor; 18. Second sleeve; 19. Third gear; 20. Fourth gear; 21. Fourth drive motor; 22. Sector cover plate; 23. Arc-shaped cross-section; 24. Feed inlet; 25. Discharge pipe; 26. Support leg. Detailed Implementation

[0022] 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.

[0023] Example

[0024] Reference Figures 1-4 A dispersion and mixing device for producing biodegradable polyester material includes a first mixing tank 1 with a top opening and a second mixing tank 2 with a bottom opening. The first mixing tank 1 and the second mixing tank 2 are arranged opposite to each other, and the first mixing tank 1 is connected to the second mixing tank 2 through a flange, so that the first mixing tank 1 and the second mixing tank 2 are detachably connected, which facilitates cleaning of the mixing tank.

[0025] It should be noted that a feed inlet 24 is installed on one side of the top of the second mixing tank 2, and a sealing cover is provided on the top of the feed inlet 24 to add biodegradable polyester production raw materials into the mixing tank. At least three spaced support legs 26 are installed at the bottom edge of the first mixing tank 1 to support the mixing tank.

[0026] like Figure 3 and Figure 4 As shown, a support plate 3 is provided on the inner side between the second mixing tank 2 and the first mixing tank 1. The support plate 3 has several spaced-apart fan-shaped grooves 4, allowing the raw materials falling into the second mixing tank 2 to fall onto the support plate 3 and then into the first mixing tank 1 through the fan-shaped grooves 4. A first sleeve 9 is provided at the center of the upper part of the support plate 3. Several spaced-apart first stirring blades 10 are installed on the side of the first sleeve 9. The top of the first sleeve 9 penetrates the top of the second mixing tank 2 and is rotatably connected to it. A first drive mechanism is provided on the top of the first sleeve 9 to drive its rotation. A first connecting shaft 6 is built into the first sleeve 9 and is rotatably connected to it. The top of the first connecting shaft 6 extends to... A first drive motor 8 is connected to the outside of the first sleeve 9. The first drive motor 8 is connected to the second mixing tank 2 via a bracket. The bottom of the first connecting shaft 6 is rotatably mounted on the support plate 3. Several spaced sector plates 7 are installed on the bottom side of the first connecting shaft 6. The sector plates 7 correspond one-to-one with the sector grooves 4, and the bottom surface of the sector plates 7 is fitted with the top surface of the support plate 3 with a clearance. After some of the raw materials fall into the first mixing tank 1, the first drive motor 8 will drive the first sleeve 9 to rotate, so that the frontal projection of the sector plates 7 falls into the sector grooves 4, thereby blocking the sector grooves 4 and interrupting the raw materials from falling into the first mixing tank 1. Therefore, the raw materials added to the second mixing tank 2 will fall onto the support plate 3, so as to perform separate mixing operations on the raw materials in the same tank.

[0027] Among them, such as Figure 1 and Figure 3 As shown, the first drive mechanism includes a first gear 12, which is coaxially mounted on the top of the first sleeve 9, and a second gear 13 meshes with the side of the first gear 12. A second drive motor 14 is coaxially mounted on the second gear 13. The second drive motor 14 is connected to the second mixing tank 2 through a bracket to provide power for the rotation of the first sleeve 9, thereby realizing the operation of stirring the raw materials above the support plate 3.

[0028] like Figure 3 and Figure 4 As shown, a second connecting shaft 15 is rotatably mounted at the bottom center of the support plate 3. Multiple second stirring blades 16 are installed on the side of the second connecting shaft 15 at intervals. The bottom of the second connecting shaft 15 passes through the bottom of the first stirring tank 1 and is connected to a third drive motor 17. The third drive motor 17 is connected to the first stirring tank 1 through a bracket, and the second connecting shaft 15 is rotatably connected to the first stirring tank 1 to perform stirring operations on the raw materials placed in the first stirring tank 1.

[0029] Furthermore, an annular support base 5 is installed along the top inner wall of the first mixing tank 1. The edge of the support plate 3 corresponds to the support base 5, and the edge of the support plate 3 is fitted with the inner wall of the first mixing tank 1 with a gap to support the support plate 3 inside the first mixing tank 1. In actual use, the support plate 3 is fastened to the support base 5 with bolts.

[0030] After the biodegradable polyester raw material is well mixed, such as Figure 3 and Figure 4 As shown, a fan-shaped collecting trough is installed on one side of the bottom of the first mixing tank 1. The collecting trough is connected to the first mixing tank 1 and is coaxially arranged with the second connecting shaft 15. A discharge pipe 25 is installed at the bottom of the collecting trough, and a solenoid valve is installed on the discharge pipe 25. The solenoid valve can be opened to allow the biodegradable polyester to be discharged from the discharge pipe 25. Subsequently, under the operation of the first drive motor 8 again, the fan-shaped plate 7 is moved away from the fan-shaped groove 4, so that the biodegradable polyester on the support plate 3 falls into the first mixing tank 1. At least one material-pushing plate 11 is installed on the bottom side of the first sleeve 9. The material-pushing plate 11 is perpendicular to the support plate 3, and the bottom of the material-pushing plate 11 is in clearance fit with the top surface of the fan-shaped plate 7. When the material in the second mixing tank 2 is sent into the first mixing tank 1, the first drive motor 8 is turned on, so that the material-pushing plate 11 can rotate with the first connecting shaft 6, thereby allowing the material-pushing plate 11 to sweep the material falling on the fan-shaped plate 7, so that the material in the second mixing tank 2 can fall fully into the first mixing tank 1.

[0031] To prevent raw materials from falling into the collection trough prematurely and affecting the proportions of the various substances, a second sleeve 18 is installed through the center of the bottom of the first mixing tank 1. The second sleeve 18 is fitted onto the second connecting shaft 15 and is rotatably connected to the first mixing tank 1. A second drive mechanism is installed at the bottom of the second sleeve 18 to rotate it. A fan-shaped cover plate 22 is connected to one side of the second sleeve 18, corresponding to the collection trough. As the tube 18 rotates, the fan-shaped cover plate 22 falls on the top of the collection trough, thereby preventing the material from falling into the collection trough. In addition, an arc-shaped cut surface 23 is provided on one side of the fan-shaped cover plate 22. During discharge, the fan-shaped cover plate 22 can rotate continuously in the first mixing tank 1, so that the fan-shaped cover plate 22 pushes the material located at the bottom of the first mixing tank 1, and the material generates centrifugation under the action of the fan-shaped cover plate 22, so that it can better slide into the collection trough along the arc-shaped cut surface 23 for discharge, ensuring the full discharge of biodegradable polyester.

[0032] Furthermore, the second drive mechanism includes a third gear 19, which is coaxially mounted on the bottom of the second sleeve 18. A fourth gear 20 meshes with the side of the third gear 19, and a fourth drive motor 21 is coaxially mounted on the fourth gear 20. The fourth drive motor 21 is connected to the first mixing tank 1 through a bracket to provide power for the rotation of the second sleeve 18.

[0033] Specifically, a control box can be installed on the outer wall of the second mixing tank 2 or on one side next to the first mixing tank 1. The control box contains a controller, which is connected to the first drive motor 8, the second drive motor 14, the third drive motor 17, the fourth drive motor 21, and the solenoid valve via wires. In addition, heating plates and temperature sensors are installed on the inner walls of both the first mixing tank 1 and the second mixing tank 2. The heating plates and temperature sensors are connected to the controller via wires to heat the raw materials to be stirred, thereby increasing their reaction rate. The temperature sensors can monitor the internal temperature to ensure that the raw material reaction is at a suitable temperature.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A dispersion and stirring device for the production of biodegradable polyester materials, characterized in that: It includes a first mixing tank (1) with a top opening and a second mixing tank (2) with a bottom opening. The first mixing tank (1) and the second mixing tank (2) are arranged opposite to each other, and the first mixing tank (1) is connected to the second mixing tank (2) through a flange. A support plate (3) is provided on the inner side between the second mixing tank (2) and the first mixing tank (1). Several fan-shaped grooves (4) are arranged at intervals on the support plate (3). A first sleeve (9) is provided at the center above the support plate (3). Several first stirring blades (10) are installed on the side of the first sleeve (9) at intervals. The top of the first sleeve (9) penetrates the top of the second mixing tank (2), and the first sleeve (9) is rotatably connected to the second mixing tank (2). A first driving mechanism is provided on the top of the first sleeve (9) to drive its rotation. The first sleeve (9) is built into the first sleeve (9). There is a first connecting shaft (6), and the first connecting shaft (6) is rotatably connected to the first sleeve (9). The top of the first connecting shaft (6) extends to the outside of the first sleeve (9) and is connected to the first drive motor (8). The first drive motor (8) is connected to the second mixing tank (2) through a bracket. The bottom of the first connecting shaft (6) is rotatably mounted on the support plate (3). Several spaced fan-shaped plates (7) are installed on the bottom side of the first connecting shaft (6). The fan-shaped plates (7) correspond one-to-one with the fan-shaped grooves (4), and the bottom surface of the fan-shaped plates (7) is in clearance fit with the top surface of the support plate (3). A second connecting shaft (15) is rotatably mounted at the bottom center of the support plate (3). Multiple second stirring blades (16) are installed on the side of the second connecting shaft (15) at intervals. The bottom of the second connecting shaft (15) passes through the bottom of the first stirring tank (1) and is connected to a third drive motor (17). The third drive motor (17) is connected to the first stirring tank (1) through a bracket, and the second connecting shaft (15) is rotatably connected to the first stirring tank (1).

2. The dispersion and stirring device for producing biodegradable polyester materials according to claim 1, characterized in that: A fan-shaped material collection trough is installed on one side of the bottom of the first mixing tank (1). The material collection trough is connected to the first mixing tank (1) and is coaxial with the second connecting shaft (15). A discharge pipe (25) is installed at the bottom of the material collection trough. A solenoid valve is installed on the discharge pipe (25). At least one material-pushing plate (11) is installed on the bottom side of the first sleeve (9). The material-pushing plate (11) is perpendicular to the support plate (3), and the bottom of the material-pushing plate (11) is clearance-fitted with the top surface of the fan-shaped plate (7).

3. The dispersion and stirring device for producing biodegradable polyester materials according to claim 2, characterized in that: A second sleeve (18) is provided through the center of the bottom of the first mixing tank (1). The second sleeve (18) is sleeved on the second connecting shaft (15) and is rotatably connected to the first mixing tank (1). The second sleeve (18) is rotatably connected to the second connecting shaft (15). A second driving mechanism is provided at the bottom of the second sleeve (18) to drive its rotation. A fan-shaped cover plate (22) is connected to one side of the second sleeve (18). The fan-shaped cover plate (22) corresponds to the material collection trough, and an arc-shaped cut surface (23) is opened on one side of the fan-shaped cover plate (22).

4. The dispersion and stirring device for producing biodegradable polyester materials according to claim 3, characterized in that: The second drive mechanism includes a third gear (19), which is coaxially mounted on the bottom of the second sleeve (18). A fourth gear (20) meshes with the side of the third gear (19). A fourth drive motor (21) is coaxially mounted on the fourth gear (20). The fourth drive motor (21) is connected to the first mixing tank (1) through a bracket.

5. The dispersion and stirring device for producing biodegradable polyester materials according to claim 1, characterized in that: The first drive mechanism includes a first gear (12), which is coaxially mounted on the top of the first sleeve (9), and a second gear (13) meshes with the side of the first gear (12). A second drive motor (14) is coaxially mounted on the second gear (13), and the second drive motor (14) is connected to the second mixing tank (2) through a bracket.

6. The dispersion and stirring device for producing biodegradable polyester materials according to claim 1, characterized in that: An annular support base (5) is installed along the top inner wall of the first mixing tank (1). The edge of the support plate (3) corresponds to the support base (5), and the edge of the support plate (3) is in clearance fit with the inner wall of the first mixing tank (1).

7. The dispersion and stirring device for producing biodegradable polyester materials according to claim 1, characterized in that: A feed inlet (24) is installed on one side of the top of the second mixing tank (2), and a sealing cover is provided on the top of the feed inlet (24). At least three spaced support legs (26) are installed at the bottom edge of the first mixing tank (1).

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