A mixing blade structure for high viscosity material mixing

Abstract

The utility model relates to a kind of stirring paddle structure for high viscosity material mixing, belong to production material mixing technical field. Including stirring shaft, the stirring paddle assembly on stirring shaft, the stirring paddle assembly is fixedly connected between multiple with stirring shaft;Stirring paddle assembly includes sleeve, first stirring paddle, second stirring paddle, the first stirring paddle, second stirring paddle are all set as spiral, the first stirring paddle, second stirring paddle are respectively equipped with multiple linear distribution's first blade, second blade, the first blade, second blade are arc piece.The utility model provides a kind of stirring paddle structure for high viscosity material mixing, its multilayer and linear distribution's stirring paddle assembly expands stirring range, improves mixing uniformity.Spiral setting and smooth transition design reduce local strong shear, protect material molecular form.Two-way vortex formation enhances material mixing effect.Meanwhile, torque sensor controls shear force, prevent material damage.

Description

Technical Field

[0001] This utility model relates to a stirring blade structure for mixing high-viscosity materials, belonging to the field of production material mixing technology. Background Technology

[0002] In the chemical production field, especially in the production processes of polyurethane, silicone, and adhesives, the mixing and stirring of raw materials or semi-finished products is a crucial step. The raw materials or semi-finished products used in these processes typically require preliminary mixing, or, in a stirred tank, the addition of one or more liquid or solid additives to the liquid phase to complete a compounding or polymerization reaction. Because liquid materials usually have very high viscosity and poor flowability, ordinary stirring blades are insufficient to achieve thorough mixing between the solid and liquid phases, leading to uneven distribution of the added components in the liquid phase and affecting the quality indicators and performance of the product. Currently, the industry mainly uses planetary stirring blades to complete the mixing operation. These blades achieve thorough mixing by providing strong shear force and dispersion, and the heat generated by the reaction and stirring is removed by the coolant in the reactor jacket.

[0003] However, existing planetary agitator blades have the following significant shortcomings when processing high-viscosity materials:

[0004] High-viscosity materials have poor flowability and are usually non-Newtonian fluids. Existing paddle structures are prone to insufficient mixing, which can lead to uneven mixing of the feed components. This results in different material concentrations at different locations in the reactor, causing significant differences in reaction rates. Consequently, problems such as local overheating and material agglomeration can occur, seriously affecting product quality.

[0005] To compensate for uneven mixing and dispersion, existing technologies typically increase the stirring speed to enhance shear force and improve dispersion. However, excessively high speeds can lead to excessive shear force exerted by the impeller on the material. While this can improve dispersion quality to some extent, excessive shear force can damage the molecular structure of the material at the microscopic level and even alter the product's dimensional properties, affecting its performance in applications. Utility Model Content

[0006] This invention provides a stirring blade structure for mixing high-viscosity materials, in order to solve the problems of insufficient mixing uniformity and the contradiction between rotation speed and material characteristics in the prior art.

[0007] This utility model provides a stirring blade structure for mixing high-viscosity materials, which includes a stirring shaft and stirring blade assemblies located on the stirring shaft, wherein the stirring blade assemblies are multiple and fixedly connected to the stirring shaft;

[0008] The stirring paddle assembly includes a sleeve, a first stirring paddle, and a second stirring paddle. Both the first and second stirring paddles are spirally arranged. The first and second stirring paddles are respectively provided with multiple linearly distributed first and second blades, and the first and second blades are arc-shaped pieces.

[0009] Preferably, the plurality of said impeller assemblies are linearly distributed along the axis of the stirring shaft.

[0010] Preferably, the sleeve is fitted onto the stirring shaft and is coaxially disposed with the stirring shaft, and the sleeve is fixedly connected to the stirring shaft.

[0011] Preferably, the first and second stirring paddles have the same structure, each including a first stirring section and a second stirring section, and the first and second stirring sections are arranged in a spiral.

[0012] Preferably, the second stirring section is located at both ends of the first stirring section, and one end of the second stirring section at both ends is fixedly connected to the outer wall of the sleeve.

[0013] Preferably, the second stirring section and the first stirring section have a smooth transition.

[0014] Preferably, the first blade and the second blade are located on the side of the first and second agitators away from the sleeve, respectively, and the arc surfaces of the first blade and the second blade have opposite opening directions.

[0015] Preferably, both the first and second agitators are provided with sensor mounting holes that match the torque sensor, and the torque sensor is mounted on the first and second agitators through the sensor mounting holes.

[0016] The beneficial effects of this utility model are:

[0017] This invention provides a stirring blade structure for mixing high-viscosity materials. Through the linear distribution of multiple stirring blade components on the stirring shaft, the stirring blades can operate at different heights, expanding the stirring range and facilitating more thorough vertical mixing of high-viscosity materials. This avoids dead zones and improves overall mixing uniformity. Both the first and second stirring blades are spirally arranged, with a smooth transition between the first and second stirring sections. This reduces localized strong shear caused by structural abrupt changes, preventing material stagnation and excessive compression at corners, thus protecting the microscopic molecular structure of the material and improving dispersion uniformity. The spiral twist between the first and second stirring sections makes the material flow more in accordance with fluid dynamics during mixing, avoiding unnecessary excessive shear and the formation of localized turbulent dead zones, increasing the outlet linear velocity of the stirring blades, and promoting... The high-speed stirring of the material creates eddy currents and turbulence, enhancing the mixing effect. Multiple first and second blades are located on the first and second stirring paddles, respectively, and are linearly distributed along their outer contours. This results in greater linear velocity when the material is thrown out, enhancing its fluidity and stirring effect. The arc-shaped openings of the first and second blades face opposite directions, forming bidirectional eddies during rotation. This forces high-viscosity materials to mix thoroughly through collision and interweaving, preventing stratification or local agglomeration and further improving stirring efficiency. By setting torque sensor mounting holes on the first and second stirring paddles and connecting the torque sensor to the drive assembly, the program interlock control of the shear force of the stirring paddle assembly and the stirring speed is achieved. This ensures that the shear force during the stirring process is controlled within a reasonable range, preventing damage to the microscopic molecular morphology and rheological properties of the material from excessive stirring, thus ensuring that the rheological properties of the material are not compromised. Attached Figure Description

[0018] Figure 1 This is a front view schematic diagram of a stirring blade structure for mixing high-viscosity materials according to the present invention.

[0019] Figure 2 This is a schematic diagram of the overall structure of a stirring blade structure for mixing high-viscosity materials according to the present invention.

[0020] Figure 3 This is a schematic diagram of a stirring paddle assembly for mixing high-viscosity materials, according to the present invention.

[0021] In the figure: 1. Stirring shaft, 2. Stirring paddle assembly, 21. Sleeve, 22. First stirring paddle, 221. First stirring section, 222. Second stirring section, 223. First blade, 224. Sensor mounting hole, 23. Second stirring paddle, 231. Second blade. 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. 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.

[0023] This utility model proposes a stirring blade structure for mixing high-viscosity materials, including a stirring shaft 1 and stirring blade assemblies 2. Multiple stirring blade assemblies 2 are linearly distributed on the stirring shaft 1 and are fixedly connected to the stirring shaft 1. The stirring shaft 1 is driven to rotate circumferentially by a drive assembly. Each stirring blade assembly 2 includes a sleeve 21, a first stirring blade 22, and a second stirring blade 23. The sleeve 21 is fitted onto the stirring shaft 1 and coaxially arranged with it, and is fixedly connected to the stirring shaft 1. The first stirring blade 22 and the second stirring blade 23 are located on the sleeve 21 in a circumferential spiral distribution. The first stirring blade 22 and the second stirring blade 23 have the same structure, each including a first stirring section 221 and a second stirring section 222. The second stirring section 222 is located within the first stirring section 221. The two ends of the mixing section 221 are smoothly transitioned to the first mixing section 221. The first mixing section 221 is fixedly connected to the sleeve 21 through the two ends of the second mixing section 222. The first mixing section 221 and the second mixing section 222 are spirally twisted. The first mixing paddle 22 and the second mixing paddle 23 are respectively provided with a first blade 223 and a second blade 231. The first blade 223 and the second blade 231 have the same structure and are both arc-shaped. There are multiple first blades 223 and second blades 231. The multiple first blades 223 and second blades 231 are respectively located on the first mixing paddle 22 and the second mixing paddle 23, and their outer contours are linearly distributed. The arc opening directions of the first blade 223 and the second blade 231 on the first mixing paddle 22 and the second mixing paddle 23 are opposite.

[0024] Both the first impeller 22 and the second impeller 23 are provided with sensor mounting holes 224 for mounting torque sensors, and the torque sensors are electrically connected to the drive assembly.

[0025] In use, the stirring shaft 1 is driven to rotate by the drive assembly. The stirring shaft 1 drives the first stirring paddle 22 and the second stirring paddle 23 to rotate synchronously through the sleeve 21 to stir the material. The first stirring section 221 and the two second stirring sections 222 at both ends have a smooth transition, reducing local strong shear caused by structural abrupt changes and avoiding material stagnation and excessive compression at corners, thereby protecting the microscopic molecular morphology of the material. The second stirring section 222 and the first stirring section 221 are arranged in a spiral. During the stirring process, the material passes through the first stirring paddle 22 and the second stirring paddle 23, which is more in line with the fluid dynamics flow characteristics, avoiding unnecessary excessive shear and the formation of local turbulent dead zones. This increases the outlet linear velocity of the first stirring paddle 22 and the second stirring paddle 23, promotes eddy turbulence of the high-speed stirred material, and thus improves the dispersion uniformity. The outer contour of the impeller 23 is provided with multiple linearly distributed first blades 223 and second blades 231, which allows the material to have a greater linear velocity when it is thrown out by the first impeller 22 and the second impeller 23. The first blades 223 and the second blades 231 have opposite arc directions, which can form a bidirectional vortex when rotating, forcing the high viscosity material to be fully mixed in collision and interweaving, avoiding stratification or local agglomeration, and further improving the mixing efficiency. The torque sensor is installed on the first impeller 22 and the second impeller 23 through the sensor mounting hole 224. The torque sensor is electrically connected to the drive component, so that the speed of the drive component can be interlocked and controlled by the program, providing a stable torque output. The detection of the torque sensor ensures that the shear force of the impeller component 2 is controlled within a reasonable range, preventing excessive stirring from damaging the microscopic molecular morphology and rheological properties of the material, thereby ensuring that the rheological properties of the material are not damaged.

[0026] Compared to existing designs, the multiple agitator assemblies 2 linearly distributed along the agitator shaft 1 allow the agitators to operate at different heights on the shaft, expanding the mixing range and ensuring more thorough mixing of high-viscosity materials even in the vertical direction. This avoids dead zones and improves overall mixing uniformity. The fixed connection between the agitator assemblies 2 and the agitator shaft 1 ensures no relative movement between them. During mixing, the agitator assemblies 2 stably follow the agitator shaft 1 in a circular rotation, efficiently transmitting the power of the drive assembly to the material, reducing energy loss and improving mixing efficiency. The sleeve 21, fitted onto the agitator shaft 1 and coaxially aligned with it, ensures the agitator assemblies 2... The stirring shaft 1 undergoes uniform circular motion, ensuring a uniform distribution of stirring force around it. This avoids vibration and noise caused by eccentric motion, improving equipment stability and service life. The first stirring paddle 22 and the second stirring paddle 23 are arranged in a circular spiral on the sleeve 21, allowing them to cover a larger space during stirring. This generates multi-directional stirring force on the material, promoting its flow and mixing in three-dimensional space, and improving the uniformity and efficiency of stirring. The smooth transition between the first stirring section 221 and the two second stirring sections 222 reduces localized strong shear caused by structural abrupt changes, preventing large shear forces from easily generated at the abrupt changes in the stirring paddle structure, which could lead to material stagnation and excessive compression at corners, damaging the material. The microscopic molecular morphology of the material is spirally twisted between the first stirring section 221 and the second stirring section 222. During the stirring process, the material flows more in accordance with the fluid dynamics characteristics when passing through the first stirring blade 22 and the second stirring blade 23, avoiding unnecessary excessive shearing and the formation of local turbulent dead zones. This increases the outlet linear velocity of the first stirring blade 22 and the second stirring blade 23, promotes eddy turbulence of the high-speed stirred material, and thus improves the dispersion uniformity. Multiple first blades 223 and second blades 231 are linearly distributed along their outer contours on the first stirring blade 22 and the second stirring blade 23, respectively, so that the material has a greater linear velocity when it is thrown out by the first stirring blade 22 and the second stirring blade 23, enhancing the flow of the material. The dynamic and stirring effects are enhanced by the opposite opening directions of the arc surfaces of the first blade 223 and the second blade 231, which force high-viscosity materials to mix thoroughly through collision and interweaving, avoiding stratification or local agglomeration and further improving stirring efficiency. Both the first stirring blade 22 and the second stirring blade 23 are equipped with sensor mounting holes 224 for installing torque sensors, which facilitates the installation and removal of torque sensors and makes equipment maintenance and repair easier. The torque sensor is electrically connected to the drive assembly, enabling the speed of the drive assembly to be interlocked and controlled by a program, providing stable torque output and ensuring that the shear force of the stirring blade assembly 2 is controlled within a reasonable range. This prevents excessive stirring from damaging the microscopic molecular morphology and rheological properties of the material, thereby ensuring that the rheological properties of the material are not destroyed.

[0027] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A stirring blade structure for mixing high-viscosity materials, characterized in that, It includes a stirring shaft (1) and a stirring paddle assembly (2) located on the stirring shaft (1), wherein the stirring paddle assembly (2) consists of multiple paddles that are fixedly connected to the stirring shaft (1); The stirring paddle assembly (2) includes a sleeve (21), a first stirring paddle (22), and a second stirring paddle (23). The first stirring paddle (22) and the second stirring paddle (23) are both spirally arranged. The first stirring paddle (22) and the second stirring paddle (23) are respectively provided with multiple linearly distributed first blades (223) and second blades (231). The first blades (223) and the second blades (231) are arc blades.

2. The stirring blade structure for mixing high-viscosity materials according to claim 1, characterized in that: The plurality of the stirring paddle assemblies (2) are linearly distributed along the axis of the stirring shaft (1).

3. The stirring blade structure for mixing high-viscosity materials according to claim 1, characterized in that: The sleeve (21) is sleeved on the stirring shaft (1) and coaxially arranged with the stirring shaft (1). The sleeve (21) and the stirring shaft (1) are fixedly connected.

4. The stirring blade structure for mixing high-viscosity materials according to claim 1, characterized in that: The first stirring paddle (22) and the second stirring paddle (23) have the same structure, both including a first stirring section (221) and a second stirring section (222).

5. The stirring blade structure for mixing high-viscosity materials according to claim 4, characterized in that: The second stirring section (222) is located at both ends of the first stirring section (221), and one end of the second stirring section (222) is fixedly connected to the outer wall of the sleeve (21).

6. The stirring blade structure for mixing high-viscosity materials according to claim 4, characterized in that: The second stirring section (222) and the first stirring section (221) have a smooth transition.

7. The stirring blade structure for mixing high-viscosity materials according to claim 1, characterized in that: The first blade (223) and the second blade (231) are located on the side away from the sleeve (21) of the first stirring paddle (22) and the second stirring paddle (23), respectively, and the arc surfaces of the first blade (223) and the second blade (231) have opposite opening directions.

8. The stirring blade structure for mixing high-viscosity materials according to claim 1, characterized in that: Both the first stirring paddle (22) and the second stirring paddle (23) are provided with sensor mounting holes (224) that match the torque sensor.

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