Melt blending extrusion device

Abstract

The utility model discloses a melt blending extrusion device which comprises a mixing tank and an extrusion assembly, and the extrusion assembly is arranged below the mixing tank; a stirring shaft is arranged in the mixing tank, the first stirring spiral blade is arranged on the stirring shaft, a plurality of rotating shafts are movably connected with the lower part of the stirring shaft in the mixing tank at equal angles, and second stirring spiral blades are arranged on the rotating shafts. In conclusion, the material mixing device overcomes the defects in the prior art, is reasonable in design, can push materials in the middle of the material mixing tank downwards and diffuse the materials outwards, avoids precipitation or layering of the materials in the mixing process, improves the mixing effect, and has high social use value and application prospects.

Description

Technical Field

[0001] This utility model relates to the field of PVC material modification, and in particular to a melt blending extrusion device. Background Technology

[0002] Modified PVC materials offer excellent performance and can meet functional requirements in various scenarios. In the field of building materials, their superior mechanical properties and weather resistance can be used to manufacture stronger and more durable sheets and pipes. In industrial products, they can improve the impact resistance and wear resistance of products. In the field of daily necessities, such as floor coverings and floor tiles, they can provide a better user experience.

[0003] The core principle of PVC modified wear-resistant reinforced technology lies in improving the performance of traditional PVC materials by adding specific modifiers and employing reasonable preparation processes. In terms of preparation processes, methods such as melt blending extrusion and open mill calendering are used to ensure thorough mixing of the components, forming a uniform structure and thus improving the overall performance of the material. However, in existing melt blending extrusion devices, the density difference between the molten PVC material and the modifier may lead to sedimentation or stratification, resulting in poor mixing. To address these issues, a melt blending extrusion device with improved mixing performance is provided. Utility Model Content

[0004] In order to solve the problems mentioned in the background art, the present invention provides a melt blending extrusion device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A melt blending extrusion apparatus includes a mixing tank and an extrusion assembly, wherein the extrusion assembly is disposed below the mixing tank; a stirring shaft is provided inside the mixing tank, and a first stirring spiral blade is provided on the stirring shaft; multiple rotating shafts are equiangularly movably connected inside the mixing tank at the lower part of the stirring shaft, and a second stirring spiral blade is provided on the rotating shaft.

[0007] Preferably, the stirring shaft is provided with stirring blades for uniformly mixing the molten PVC liquid and the modifier.

[0008] Preferably, a fixed box is rotatably connected to the lower part of the stirring shaft, and the rotating shaft is rotatably connected to the side wall of the fixed box.

[0009] Preferably, a limiting block is provided at the end of the rotating shaft away from the stirring shaft, and a limiting groove is provided on the side wall of the mixing tank, with the limiting block being limited and connected within the limiting groove.

[0010] Preferably, the stirring shaft and the rotating shaft are connected by a bevel gear pair.

[0011] Preferably, the mixing tank is provided with a feeding funnel at the top and a discharge pipe at the bottom, and a solenoid valve is provided on the discharge pipe.

[0012] Preferably, the mixing tank is equipped with heating elements inside the wall to provide the temperature conditions for the molten PVC liquid and the modifier to melt and mix.

[0013] Preferably, the extrusion assembly includes a first-stage cylinder connected to the discharge pipe, a second-stage cylinder connected to the side of the first-stage cylinder, a rotating shaft rotatably connected to the side wall of the first-stage cylinder, and a first conveying spiral blade and a second conveying spiral blade provided on the rotating shaft.

[0014] Preferably, the first conveying spiral blade is provided with a fixing rod, and the fixing rod is provided with a mixing rod.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. While the stirring blades rotate, they drive the first stirring spiral blades to mix the material in the middle of the mixing tank and push it downwards. The meshing connection between the first and second bevel gears drives the rotating shaft to rotate, thereby driving the second stirring spiral blades to move and diffuse the material in the middle of the mixing tank to the outside. This can prevent the material in the mixing tank from settling or separating, and better mix the PVC liquid and modifier.

[0017] 2. When the material enters the first-stage cylinder, the second motor can drive the shaft to rotate. When the material is conveyed, it will be blocked and disturbed by the mixing rod, which can further mix the material and improve the melting and mixing effect.

[0018] In summary, this utility model overcomes the shortcomings of the prior art, has a reasonable design, and can push the material in the middle of the mixing tank downward and diffuse it outward, avoiding sedimentation or stratification of the material during the mixing process, improving the mixing effect, and has high social use value and application prospects. Attached Figure Description

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of the mixing tank of this utility model;

[0022] Figure 3 This is a schematic diagram of the stirring shaft structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the rotating shaft structure of this utility model;

[0024] Figure 5 This is a schematic diagram of the internal structure of the extrusion assembly of this utility model.

[0025] In the diagram: mixing tank 1, extrusion assembly 2, feed funnel 101, heating element 102, limiting groove 103, discharge pipe 104, solenoid valve 1041, stirring shaft 11, stirring blade 111, first stirring spiral blade 112, fixing box 12, rotating shaft 121, limiting block 1211, second stirring spiral blade 1212, first bevel gear 1213, second bevel gear 113, first motor 114, first-stage cylinder 21, second-stage cylinder 22, extrusion head 23, rotating shaft 121, first conveying spiral blade 241, second conveying spiral blade 242, second motor 243, fixing rod 2411, mixing rod 2412. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] Example 1

[0028] Reference Figure 1-5 A melt blending extrusion apparatus includes a mixing tank 1 and an extrusion assembly 2. The extrusion assembly 2 is disposed below the mixing tank 1. A stirring shaft 11 is rotatably connected inside the mixing tank 1. Multiple stirring blades 111 are equidistantly arranged on the stirring shaft 11. The stirring blades 111 are used to mix PVC liquid and modifier evenly. A first stirring spiral blade 112 is provided on the stirring shaft 11. While stirring, the first stirring spiral blade 112 can push the material in the middle of the mixing tank 1 downwards while mixing. A fixed box 12 is rotatably connected to the side wall of the stirring shaft 11 near the bottom end. A rotating shaft 121 is rotatably connected to the side wall of the fixed box 12. A second stirring spiral blade 1212 is provided on the rotating shaft 121.

[0029] A limiting block 1211 is provided at the end of the rotating shaft 121 away from the stirring shaft 11. A limiting groove 103 is provided on the side wall of the mixing tank 1. The limiting block 1211 is limited and connected in the limiting groove 103. The limiting block 1211 is limited and connected in the limiting groove 103 to prevent the fixed box from rotating with the stirring shaft 11. A second bevel gear 113 is provided at the end of the stirring shaft 11 located in the fixed box 12. A first bevel gear 1213 is provided at the end of the rotating shaft 121 located inside the fixed box 12. The first bevel gear 1213 and the second bevel gear 113 are meshed and connected. When the stirring shaft 11 rotates, the meshing connection between the first bevel gear 1213 and the second bevel gear 113 can drive the rotating shaft 121 to rotate, thereby driving the second stirring spiral blade 1212 to move and diffuse the material in the middle of the mixing tank 1 to the outside, thereby further mixing the PVC liquid and the modifier.

[0030] Furthermore, a first motor 113 is provided at the top of the mixing tank 1. The output end of the first motor 113 is fixedly connected to the stirring shaft 11, and the stirring shaft 11 can be driven to rotate by the first motor 113.

[0031] Furthermore, the mixing tank 1 is provided with a feeding funnel 101 at the top for adding PVC liquid and modifier to the mixing tank 1, and a discharge pipe 104 is provided at the bottom of the mixing tank 1, with a solenoid valve 1041 on the discharge pipe 104.

[0032] Furthermore, the mixing tank 1 is equipped with heating elements 102 inside the wall to provide the temperature conditions for the PVC liquid and the modifier to melt and mix, so as to prevent the PVC liquid from solidifying in the mixing tank 1.

[0033] Starting the first motor 113 drives the stirring shaft 11 to rotate, thereby driving the stirring blades 111 to mix the PVC liquid and the modifier evenly. While the stirring blades 111 rotate, they also drive the first stirring spiral blades 112 to mix the material in the middle of the mixing tank 1 and push it downwards. The first bevel gear 1213 and the second bevel gear 113 mesh to drive the rotating shaft 121 to rotate, thereby driving the second stirring spiral blades 1212 to move and diffuse the material in the middle of the mixing tank 1 to the outside. This can prevent the material in the mixing tank 1 from settling or separating, and better mix the PVC liquid and the modifier.

[0034] Reference Figure 1-5 The extrusion assembly 2 includes a first-stage cylinder 21 connected to the discharge pipe 104. A second-stage cylinder 22 is connected to the side of the first-stage cylinder 21. A rotating shaft 121 is rotatably connected to the side wall of the first-stage cylinder 21. The portion of the rotating shaft 121 located inside the first-stage cylinder 21 is provided with a first conveying spiral blade 241, and the portion of the rotating shaft 121 located inside the second-stage cylinder 22 is provided with a second conveying spiral blade 242. An extrusion head 23 is provided on the side end of the second-stage cylinder 22. By rotating the rotating shaft 121, the material is mixed twice through the first-stage cylinder 21 and enters the second-stage cylinder 22, where it is extruded and formed.

[0035] Furthermore, a fixed rod 2411 is provided on the first conveying spiral blade 241, and a mixing rod 2412 is provided on the fixed rod 2411. When the material passes through the mixing rod 2412 during conveying, it will be blocked and disturbed by the mixing rod 2412, so that the material will be further mixed.

[0036] A second motor 243 is provided on the side end of the first-stage cylinder 21. The output end of the second motor 243 is fixedly connected to the rotating shaft 121, and the rotating shaft 121 can be driven to rotate by the second motor 243.

[0037] When the material enters the first-stage cylinder 21, the second motor 243 is started, which can drive the rotating shaft 121 to rotate. When the material is conveyed, it is blocked and disturbed by the mixing rod 2412, which makes the material further mixed. Then the material enters the second-stage cylinder 22, and the material is extruded from the extrusion head 23 by the second conveying spiral blade 242.

[0038] Working principle: When the material and modifier are put into the mixing tank 1, the first motor 113 is started, which drives the stirring shaft 11 to rotate, thereby driving the stirring blades 111 to mix the PVC liquid and modifier evenly. While the stirring blades 111 are rotating, the first stirring spiral blades 112 drive the material in the middle of the mixing tank 1 to mix and push it downward. The first bevel gear 1213 and the second bevel gear 113 mesh and connect to drive the rotating shaft 121 to rotate, thereby driving the second stirring spiral blades 1212 to move and diffuse the material in the middle of the mixing tank 1 to the outside for mixing.

[0039] When the material enters the first-stage cylinder 21, the second motor 243 is started, which can drive the rotating shaft 121 to rotate. When the material is conveyed, it is blocked and disturbed by the mixing rod 2412, which makes the material further mixed. Then the material enters the second-stage cylinder 22, and the material is extruded from the extrusion head 23 by the second conveying spiral blade 242.

[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0041] In this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "join," and "fix" 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, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.

[0043] 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 melt blending extrusion apparatus, characterized in that, include: A mixing tank (1) and an extrusion assembly (2), wherein the extrusion assembly (2) is disposed below the mixing tank (1); The mixing tank (1) is provided with a stirring shaft (11), and a first stirring spiral blade (112) is provided on the stirring shaft (11). Multiple rotating shafts (121) are equiangularly connected to the lower part of the stirring shaft (11) in the mixing tank (1), and a second stirring spiral blade (1212) is provided on the rotating shaft (121).

2. The melt blending extrusion apparatus according to claim 1, characterized in that: The stirring shaft (11) is equipped with stirring blades (111) for mixing molten PVC liquid and modifier evenly.

3. The melt blending extrusion apparatus according to claim 1, characterized in that: The lower part of the stirring shaft (11) is rotatably connected to a fixed box (12), and the rotating shaft (121) is rotatably connected to the side wall of the fixed box (12).

4. The melt blending extrusion apparatus according to claim 3, characterized in that: A limiting block (1211) is provided at one end of the rotating shaft (121) away from the stirring shaft (11), and a limiting groove (103) is provided on the side wall of the mixing tank (1), and the limiting block (1211) is limited and connected in the limiting groove (103).

5. The melt blending extrusion apparatus according to claim 4, characterized in that: The stirring shaft (11) and the rotating shaft (121) are connected by a bevel gear pair.

6. The melt blending extrusion apparatus according to claim 1, characterized in that: The mixing tank (1) is provided with a feeding funnel (101) at the top and a discharge pipe (104) at the bottom. The discharge pipe (104) is provided with a solenoid valve (1041).

7. The melt blending extrusion apparatus according to claim 1, characterized in that: The mixing tank (1) is equipped with heating elements (102) inside its wall to provide the temperature conditions for the molten PVC liquid and the modifier to be molten and mixed.

8. A melt blending extrusion apparatus according to claim 6, characterized in that: The extrusion assembly (2) includes a first-stage cylinder (21) connected to the discharge pipe (104), a second-stage cylinder (22) connected to the side of the first-stage cylinder (21), and a rotating shaft (121) rotatably connected to the side wall of the first-stage cylinder (21). The rotating shaft (121) is provided with a first conveying spiral blade (241) and a second conveying spiral blade (242).

9. A melt blending extrusion apparatus according to claim 8, characterized in that: The first conveying spiral blade (241) is provided with a fixing rod (2411), and the fixing rod (2411) is provided with a mixing rod (2412).

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