High-shear dispersing and stirring device for polymer composite material

Abstract

The utility model relates to the technical field of dispersing and stirring equipment, in particular to a high-shear dispersing and stirring device for polymer composite materials, which comprises a stirring tank, a support seat arranged at the bottom of the stirring tank, a support frame arranged at the top of the stirring tank, a driving source arranged on the support frame, and a rotating shaft arranged at the output end of the driving source. A discharge hole is formed in one side of the stirring tank and is used for taking out the polymer composite material in the stirring tank; a first stirring assembly, a second stirring assembly and a third stirring assembly are respectively arranged on the rotating shaft from top to bottom; the first stirring assembly is used for mixing the polymer composite material in the stirring tank; the second stirring assembly is used for dispersing the clustered polymer composite material in the stirring tank; the third stirring assembly is used for stirring the polymer composite material attached to the bottom of the stirring tank. Compared with the prior art, the mixing uniformity and the dispersion effect of the polymer composite material are improved.

Description

Technical Field

[0001] This utility model relates to the field of dispersion and stirring equipment, and in particular to a high-shear dispersion and stirring device for polymer composite materials. Background Technology

[0002] Polymer composites typically require thorough mixing and high-shear dispersion during production to ensure uniform material distribution and improve product performance. However, due to the high viscosity of polymer composites and the potential presence of fillers or additives, agglomeration, sedimentation, or uneven mixing can easily occur during the stirring process.

[0003] In the prior art, Chinese patent document CN212467871U discloses a cleaning-friendly mixing and stirring device for modified polymer composite materials, including a mixing tank and a fixed tank. A top cover is provided on one side of the mixing tank, and a guide rod is connected to the side of the top cover near the mixing tank. A guide rod groove is formed on the side of the mixing tank near the guide rod. A motor is located on one side of the top cover, and a drive shaft is connected to one side of the motor. A drive gear is connected to one side of the drive shaft, and a driven gear is located on one side of the drive gear. A connecting pipe is fixed to one side of the driven gear. While this solution can achieve thorough cleaning of the mixing tank, it is similar to traditional stirring devices in that it typically uses a single type of stirring blade, resulting in a relatively simple stirring method. This makes it difficult to simultaneously meet the requirements of efficient mixing, uniform dispersion, and prevention of bottom sedimentation, leading to low stirring efficiency and ultimately affecting product quality. Therefore, this utility model proposes a high-shear dispersion stirring device for polymer composite materials to meet the needs of improving the mixing uniformity and dispersion effect of polymer composite materials. Utility Model Content

[0004] The purpose of this invention is to provide a high-shear dispersion and stirring device for polymer composite materials, in order to solve the problem that the stirring method is relatively simple, resulting in low stirring efficiency and ultimately affecting product quality.

[0005] To achieve the above objectives, this utility model provides a high-shear dispersion and stirring device for polymer composite materials, comprising a stirring tank, a support base at the bottom of the stirring tank, a support frame at the top of the stirring tank, a drive source on the support frame, a rotating shaft at the output end of the drive source, and a first stirring component, a second stirring component, and a third stirring component arranged from top to bottom on the rotating shaft. The first stirring component is used to mix the polymer composite material in the stirring tank; the second stirring component is used to disperse the polymer composite material aggregated in the stirring tank; and the third stirring component is used to stir the polymer composite material adhering to the bottom of the stirring tank.

[0006] Preferably, the first stirring assembly includes multiple sets of stirring blades disposed on the rotating shaft, and a set of dispersing rods is disposed on the top of the stirring blades, and the stirring blades are inclined.

[0007] Preferably, the second stirring assembly includes a fixed sleeve rod fixedly sleeved at the center of the rotating shaft. The fixed sleeve rod has a threaded groove, which is a reciprocating double thread structure. Limiting discs are provided at both ends of the fixed sleeve rod. Mounting discs are threaded on the fixed sleeve rod. Multiple sets of dispersing blades are symmetrically arranged on both sides of the mounting discs.

[0008] Preferably, the third stirring assembly includes a set of floating blades disposed on the rotating shaft. The floating blades are spirally shaped with a diameter increasing to one side. A rotating base is disposed at the bottom of the floating blades, and the rotating base is in contact with the bottom of the stirring tank.

[0009] Preferably, all the dispersing blades are arc-shaped and deflected to one side, and the dispersing blades on both sides of the mounting plate deflect in opposite directions.

[0010] Preferably, a discharge port is provided on one side of the mixing tank, and the discharge port is used to remove the polymer composite material inside the mixing tank.

[0011] The beneficial effects of this utility model are:

[0012] 1. A drive source rotates the rotating shaft, causing a multi-stage stirring assembly mounted on the shaft to sequentially mix, disperse, and bottom-stir the polymer composite material. The first stirring assembly thoroughly mixes the material in the mixing tank, ensuring uniform flow. The second stirring assembly applies shear force to effectively disperse agglomerated materials and improve dispersion uniformity. The third stirring assembly runs close to the bottom of the mixing tank to prevent material deposition and adhesion. The entire process ensures that the polymer composite material is fully mixed in the mixing tank and can be smoothly discharged through the outlet. The multi-stage stirring structure effectively improves the mixing uniformity and dispersion effect of the polymer composite material, avoids material agglomeration and bottom deposition, and improves product quality. At the same time, the bottom third stirring assembly reduces material residue, lowers production losses, and improves the ease of equipment cleaning.

[0013] 2. By tilting the stirring blades, forced flow can be formed in the mixing tank when the rotating shaft rotates, so that the polymer composite material can be fully mixed. The tilted stirring blades effectively enhance the fluid circulation in the mixing tank, making the materials uniformly mixed. At the same time, the dispersing rod enhances the shearing effect, improves the dispersion effect of the materials, accelerates the mixing process, reduces the dead zone of the mixing, and improves the mixing efficiency and product quality.

[0014] 3. By rotating the shaft and causing the mounting disc to rotate and reciprocate along the threaded groove axially, the dispersing blades apply multi-directional shearing forces to the material, effectively breaking down agglomerates and improving dispersion uniformity. The reciprocating double-threaded structure causes the mounting disc to reciprocate axially during rotation, enabling the dispersing blades to apply alternating shearing and compression to the material, effectively improving the dispersion effect of polymer composites. The arc-shaped deflection of the dispersing blades enhances local turbulence, promotes material refinement, reduces dead zones in the mixing process, and improves overall uniformity. This design not only improves shearing efficiency but also adapts to materials of different viscosities, expanding the equipment's applicability.

[0015] 4. The floating paddles, with their spiral shape and increasing diameter to one side, create an outward-flowing force at the bottom of the mixing tank as they rotate with the shaft. This effectively stirs the materials deposited at the bottom. Simultaneously, the rotating base, in contact with the tank bottom, reduces material deposition and adhesion, improving mixing uniformity. It also scrapes and agitates deposited polymer composite materials, preventing material accumulation and enhancing bottom stirring. This not only improves the stirring effect of high-viscosity or high-density materials but also reduces material residue during production, increases stirring efficiency, reduces cleaning difficulty, and extends the equipment's service life and operational stability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the present invention;

[0017] Figure 2 This is a partial cross-sectional view of the mixing tank of this utility model;

[0018] Figure 3 This is a schematic diagram of the rotating shaft of this utility model.

[0019] The following are marked in the diagram: 1. Mixing tank; 2. Support base; 3. Support frame; 4. Drive source; 5. Rotating shaft; 6. Mixing blade; 7. Fixed sleeve rod; 8. Threaded groove; 9. Limiting plate; 10. Floating blade; 11. Rotating base; 12. Discharge port; 13. Mounting plate; 14. Dispersing blade; 15. Dispersing rod. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0021] like Figures 1-3As shown, a high-shear dispersion and stirring device for polymer composite materials includes a stirring tank 1, a support base 2 at the bottom of the stirring tank 1, a support frame 3 at the top of the stirring tank 1, a drive source 4 on the support frame 3, a rotating shaft 5 at the output end of the drive source 4, and a discharge port 12 on one side of the stirring tank 1. When closed, the discharge port 12 is in a sealed state with the stirring tank 1 and is used to remove the polymer composite material from the stirring tank 1. The rotating shaft 5 is provided with a first stirring component, a second stirring component, and a third stirring component from top to bottom. The first stirring component is used to mix the polymer composite material in the stirring tank 1; the second stirring component is used to disperse the polymer composite material that has agglomerated in the stirring tank 1; and the third stirring component is used to stir the polymer composite material attached to the bottom of the stirring tank 1.

[0022] Driven by the drive source 4, the rotating shaft 5 is rotated, causing the multi-stage stirring components mounted on the rotating shaft 5 to sequentially mix, disperse, and bottom-stir the polymer composite material. The first stirring component is used to fully mix the material in the mixing tank 1, ensuring uniform flow. The second stirring component applies shear force to effectively disperse agglomerated materials and improve dispersion uniformity. The third stirring component runs close to the bottom of the mixing tank 1 to prevent material deposition and adhesion. The entire process ensures that the polymer composite material is fully mixed in the mixing tank 1 and can be smoothly discharged through the discharge port 12. The multi-stage stirring structure effectively improves the mixing uniformity and dispersion effect of the polymer composite material, avoids material agglomeration and bottom deposition, and improves product quality. At the same time, the bottom third stirring component reduces material residue, reduces production losses, and improves the ease of equipment cleaning.

[0023] like Figure 2 and Figure 3 As shown, the first stirring assembly includes multiple sets of stirring blades 6 arranged on the rotating shaft 5, and a set of dispersing rods 15 are arranged on the top of the stirring blades 6. The stirring blades 6 are inclined.

[0024] The stirring blades 6 are arranged at an angle, and when they rotate with the rotating shaft 5, they can form a forced flow in the mixing tank 1, so that the polymer composite material is fully mixed. The inclined stirring blades 6 effectively enhance the fluid circulation in the mixing tank 1, so that the material is mixed evenly. At the same time, the shearing action is enhanced by the dispersing rod 15, which improves the dispersion effect of the material, accelerates the mixing process, reduces the dead zone of the mixing, and improves the mixing efficiency and product quality.

[0025] like Figure 2 and Figure 3As shown, the second stirring assembly includes a fixed sleeve rod 7 fixedly sleeved at the center of the rotating shaft 5. The fixed sleeve rod 7 has a threaded groove 8, which is a reciprocating double thread structure. Limiting discs 9 are provided at both ends of the fixed sleeve rod 7. The fixed sleeve rod 7 is threaded with a mounting disc 13. Multiple sets of dispersing blades 14 are symmetrically arranged on both sides of the mounting disc 13. The dispersing blades 14 are all arc-shaped and deflected to one side. The dispersing blades 14 on both sides of the mounting disc 13 deflect in opposite directions.

[0026] As the rotating shaft 5 rotates, the mounting disc 13 rotates accordingly and reciprocates along the threaded groove 8, causing the dispersing blade 14 to apply multi-directional shearing force to the material, effectively breaking down the agglomeration structure and improving the dispersion uniformity. Through the reciprocating double thread structure, the mounting disc 13 generates axial reciprocating motion during rotation, enabling the dispersing blade 14 to apply alternating shearing and extrusion actions to the material, effectively improving the dispersion effect of polymer composite materials. The arc-shaped deflection of the dispersing blade 14 can enhance local turbulence, promote material refinement, and reduce the stirring dead zone, thereby improving the overall uniformity. This design not only improves shearing efficiency but also adapts to materials of different viscosities, expanding the applicability of the equipment.

[0027] like Figure 2 and Figure 3 As shown, the third stirring assembly includes a set of floating blades 10 disposed on the rotating shaft 5. The floating blades 10 are spiral-shaped with the diameter increasing to one side. A rotating base 11 is disposed at the bottom of the floating blades 10, and the rotating base 11 is in contact with the bottom of the stirring tank 1.

[0028] The floating blades 10 are spiral-shaped with a diameter increasing to one side. When they rotate with the rotating shaft 5, they create an outward pushing effect at the bottom of the mixing tank 1, effectively stirring the material deposited at the bottom. At the same time, the rotating base 11 rotates in contact with the bottom of the tank, reducing material deposition and adhesion, improving mixing uniformity, scraping and turning over the deposited polymer composite materials, preventing material accumulation, and improving the bottom stirring effect. It can not only improve the stirring effect of high viscosity or high density materials, but also reduce material residue in the production process, improve stirring efficiency, reduce cleaning difficulty, and improve the service life and working stability of the equipment.

[0029] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0030] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high shear dispersion stirring device for high molecular composites, comprising a stirring tank (1), characterized in that, The bottom of the stirring tank (1) is provided with a support seat (2), the top of the stirring tank (1) is provided with a support frame (3), the support frame (3) is provided with a driving source (4), the output end of the driving source (4) is provided with a rotating shaft (5), the rotating shaft (5) is provided with a first stirring assembly, a second stirring assembly and a third stirring assembly from top to bottom; The first stirring assembly is used for mixing the polymer composite in the stirring tank (1); The second stirring assembly is used for dispersing the polymer composite gathered into a group in the stirring tank (1); The third stirring assembly is used for stirring the polymer composite attached to the bottom of the stirring tank (1).

2. The high shear dispersion mixer for polymer composites according to claim 1, wherein The first stirring assembly comprises a plurality of stirring blades (6) arranged on the rotating shaft (5), the top of the stirring blade (6) is provided with a set of dispersion rods (15), and the stirring blade (6) is arranged obliquely.

3. The high shear dispersing mixer for polymer composites according to claim 1, wherein The second stirring assembly comprises a fixed sleeve rod (7) fixedly sleeved at the center of the rotating shaft (5), the fixed sleeve rod (7) is provided with a threaded groove (8), the threaded groove (8) is a reciprocating double-thread structure, the two ends of the fixed sleeve rod (7) are provided with a limiting disc (9), the threaded groove (8) is provided with a mounting disc (13) in a threaded manner, and a plurality of dispersion leaves (14) are symmetrically arranged on the two sides of the mounting disc (13).

4. The high shear dispersing and mixing device for polymer composites according to claim 1, characterized in that, The third stirring assembly comprises a set of floating paddles (10) arranged on the rotating shaft (5), the floating paddles (10) are in a thread shape with the diameter increasing to one side, the bottom of the floating paddle (10) is provided with a rotating bottom disc (11), and the rotating bottom disc (11) is in contact with the bottom of the stirring tank (1).

5. The high shear dispersing and mixing device for polymer composites according to claim 3, characterized in that, The dispersion leaves (14) are all arc-shaped and deflected to one side, and the deflection directions of the dispersion leaves (14) on the two sides of the mounting disc (13) are opposite.

6. The high shear dispersing and mixing device for polymer composites of claim 1, wherein A discharge port (12) is formed in one side of the stirring tank (1), and the discharge port (12) is used for taking out the polymer composite in the stirring tank (1).

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