A stirring device for mixing a plurality of materials

Abstract

The utility model discloses a kind of stirring device for a variety of material mixing, belong to material stirring technical field, including stirring bucket, motor, main shaft and stirring assembly, stirring assembly includes fixed shaft, autorotation axis, upper blade, lower blade and swing limiting piece. Upper blade is fixedly connected with fixed shaft, lower blade is rotatably connected with autorotation axis by lower blade connecting piece, swing limiting piece restricts the swing angle of lower blade. When working, motor drives main shaft revolution, upper blade forms main body circulation, lower blade is adaptively swung according to material resistance, produces secondary flow, effectively eliminates stirring dead angle, is suitable for from low viscosity to high viscosity, shear sensitive or easily settled various material systems, realizes efficient, uniform mixing.

Description

Technical Field

[0001] This utility model relates to a stirring device for mixing multiple materials, belonging to the field of material stirring technology. Background Technology

[0002] In numerous industrial sectors, including chemical, food, pharmaceutical, building materials, environmental protection, and new energy materials, material mixing is a core technological step that directly impacts product quality, production efficiency, and energy consumption. With the diversification of industrial raw materials and the increasing demands for product performance, production often requires the handling of a wide range of complex material systems, from low-viscosity liquids to high-viscosity pastes, from homogeneous solutions to multiphase suspensions, and from shear-sensitive biological materials to easily settling solid-liquid mixtures. These materials exhibit significant differences in rheology, density distribution, dispersion stability, and process sensitivity, placing higher technical demands on mixing equipment.

[0003] Currently, industrial mixing devices mainly rely on mechanical stirring, with structures such as paddle, turbine, propeller, and anchor types. These devices use a motor to drive the stirring shaft and fixed blades to rotate, causing macroscopic flow of materials within the mixing container, thus achieving mixing. However, these traditional mixing devices suffer from common problems in practical applications, including limited mixing uniformity. The flow field generated by traditional blades is often dominated by tangential and radial flow, with weak axial mixing capacity. Especially for high-viscosity or non-Newtonian fluids, laminar flow zones are easily formed, making it difficult to achieve uniform dispersion of materials in three-dimensional space, resulting in long mixing times and low efficiency.

[0004] There is a stirring dead zone: at the bottom, edge and behind the blades of the mixing tank, the fluid velocity is low or even close to zero, which becomes a "dead zone". This leads to particle deposition, excessively high local concentration or uneven reaction, which seriously affects the batch uniformity.

[0005] Solid-liquid suspension is difficult: In suspension mixing, solid particles tend to settle to the bottom of the container under the action of gravity. The flow field intensity at the bottom of traditional agitators is often insufficient, making it difficult to achieve complete suspension and uniform distribution of particles. Baffles or special bottom valves are often required, resulting in a complex structure.

[0006] To address the aforementioned issues, several improved designs have emerged in existing technologies. For example, these include: employing multi-layered, multi-angled blades to enhance axial circulation; adding scrapers to anchor-type agitators to prevent wall adhesion; and introducing planetary mixing mechanisms that allow the impeller to both revolve and rotate, thereby expanding the mixing range. Furthermore, some high-end equipment utilizes intelligent control systems that adjust the rotation speed in real time based on online viscosity detection.

[0007] However, these improvement solutions still have limitations: the structures tend to be complex, the manufacturing costs are high, and the maintenance is difficult; most of them are still "passive" stirring and cannot automatically adjust the stirring behavior according to the real-time changes in the material state; when dealing with multi-batch and multi-variety production with a wide range of viscosity variations and large differences in material properties, their versatility, flexibility, and energy efficiency are still not ideal. Utility Model Content

[0008] The purpose of this invention is to provide a device that can better handle various material systems ranging from low viscosity to high viscosity, and which are sensitive to shear or prone to sedimentation.

[0009] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a stirring device for mixing multiple materials, including a stirring tank, a motor fixedly connected to the center of the top of the stirring tank, a main shaft fixedly connected to the bottom of the motor, a stirring assembly provided on the main shaft, the stirring assembly including a fixed shaft, a rotating shaft, an upper blade, a lower blade, and a swing limiting member; one side of the fixed shaft of the stirring assembly is fixedly connected to the main shaft, the upper blade is provided on the fixed shaft, a blade motor is also provided at the center of one side of the fixed shaft, the output end of the blade motor is fixedly connected to the center of the rotating shaft, the lower blade is provided on the rotating shaft, and swing limiting members are fixedly connected to both sides of the fixed shaft, the swing limiting members extending to both sides of the lower blade connecting member.

[0010] Furthermore, the stirring assembly also includes an upper blade connector, which is fixedly connected to a fixed shaft, and the bottom of the upper blade is fixedly connected to the upper blade connector.

[0011] Furthermore, the stirring assembly also includes a lower blade connector, which is fixedly connected to the rotation shaft, and the top of the lower blade is fixedly connected to the lower blade connector.

[0012] Furthermore, a feed inlet is provided on one side of the motor, and the other side of the blade motor is connected to the main shaft via a signal connection.

[0013] Furthermore, there are three stirring components, which are arranged alternately from top to bottom on the main shaft.

[0014] Furthermore, the side of the upper blade closest to the main shaft is fixedly connected to the main shaft.

[0015] Compared with existing technologies, the beneficial effects achieved by this invention are as follows: by combining the fixed revolution of the upper blade with the adaptive oscillation of the lower blade, it can effectively solve the problem of low-damage mixing of shear-sensitive biological materials and the problem of suspension and dispersion of easily sedimenting solid-liquid mixtures. It can be adapted to multiple types and batches of production without replacing the stirring components, and has extremely strong versatility. The lower blade adopts an adaptive oscillation structure, rather than the hard cutting method of the traditional fixed blade. It buffers resistance through angle deflection, reduces the load on the motor drive, and reduces energy loss. Compared with the complex improvement schemes such as existing multi-layer combined blades and planetary stirring mechanisms, this device can achieve adaptive stirring function through the simple cooperation of the fixed shaft, the rotation shaft and the oscillation limiter. The overall structure is simplified and the manufacturing cost is lower. Moreover, there are no complex transmission components, the risk of failure during operation is small, and the disassembly, cleaning and maintenance are more convenient, reducing production and operation costs. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a perspective view of the present invention; Figure 2 This is a front view of the stirring assembly of this utility model; Figure 3 This is a perspective view of the stirring component of this utility model; Figure 4 This is a schematic diagram of the installation of the upper and lower blades of this utility model; Figure 5 This is a front view of the upper and lower blades of this utility model being installed. Figure 6 This is a partial cross-sectional view of the stirring assembly of this utility model; In the diagram: 1. Mixing tank; 2. Main motor; 3. Feed inlet; 4. Main shaft; 5. Mixing assembly; 51. Fixed shaft; 52. Rotation shaft; 53. Upper blade connector; 531. Upper blade; 54. Lower blade connector; 541. Lower blade; 55. Swing limiter; 6. Blade motor. Detailed Implementation

[0017] 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.

[0018] See Figure 1This utility model provides a technical solution: a stirring device for mixing multiple materials, including a stirring tank 1, a main motor 2 fixedly connected to the top center of the stirring tank 1, a main shaft 4 fixedly connected to the bottom of the main motor 2, a stirring assembly 5 provided on the main shaft 4, the stirring assembly 5 including a fixed shaft 51, a rotation shaft 52, an upper blade 531, a lower blade 541, and a swing limiting member 55; one side of the fixed shaft 51 of the stirring assembly 5 is fixedly connected to the main shaft 4, the upper blade 531 is provided on the fixed shaft 51, a blade motor 6 is also provided at the center of one side of the fixed shaft 51, the output end of the blade motor 6 is fixedly connected to the center of the rotation shaft 52, the lower blade 541 is provided on the rotation shaft 52, and swing limiting members 55 are fixedly connected to both sides of the fixed shaft 51, the swing limiting members 55 extending to both sides of the lower blade connecting member 54.

[0019] The stirring assembly 5 also includes an upper blade connector 53, which is fixedly connected to the fixed shaft 51, and the bottom of the upper blade 531 is fixedly connected to the upper blade connector 53.

[0020] The stirring assembly 5 also includes a lower blade connector 54, which is fixedly connected to the rotation shaft 52, and the top of the lower blade 541 is fixedly connected to the lower blade connector 54.

[0021] The blade motor 6 is connected to the main shaft 4 on the other side. When the main shaft 4 starts, the blade motor 6 also starts synchronously, and its output drives the lower blade 541 to swing left and right.

[0022] A feed inlet 3 is provided on one side of the main motor 2.

[0023] There are three stirring components 5, which are arranged alternately from top to bottom on the main shaft 4.

[0024] The side of the upper blade 531 closest to the main shaft 4 is fixedly connected to the main shaft 4.

[0025] Working principle: Material is fed into the inlet 3, and the main motor 2 is started, driving the main shaft 4 to revolve around the central axis of the mixing tank 1. The upper blade 531, which is fixedly connected to the main shaft 4, rotates synchronously at high speed with the main shaft 4, serving as the main power component. Its specific angle applies strong centrifugal and axial forces to the material, thereby establishing a stable main circulation flow within the mixing tank 1. This achieves rapid conveying and initial mixing of the material on an overall scale, and breaks up large particle clumps.

[0026] Driven by the revolution of the main shaft 4, the entire stirring assembly 5 moves together, and the lower blade 541 is rotatably connected to the rotation shaft 52 through the lower blade connector 54. During the revolution, the lower blade 541 is subjected to fluid resistance from the material, and the magnitude of the resistance is closely related to the local viscosity and density of the material. Under the action of this resistance, the lower blade 541 will adaptively deflect and oscillate around the rotation shaft 52.

[0027] The swing limiter 55 constrains the swing angle range of the lower blade 541, allowing it to move within a set range via the blade motor. This constrained swing, which changes in real time with fluid resistance, adds irregular oscillation to the motion trajectory of the lower blade 541. As a result, strong and directional secondary flows or chaotic microflows are generated at the bottom of the mixing tank 1 and in areas where the main flow is weak.

[0028] The upper blade 531 is fixedly connected to prevent the separation of components on a large scale. The lower blade 541 oscillates to break down the uniformity barrier on a micro scale, effectively eliminating the stirring dead zones at the bottom and walls of the barrel, and allowing material components of different weights and viscosities to permeate each other.

[0029] When mixing low-viscosity, homogeneous materials, the lower blade 541 has a small oscillation amplitude, and the device operates in a highly efficient circulation mode similar to that of a traditional agitator.

[0030] When mixing high-viscosity, non-Newtonian fluids, or solid-liquid suspensions, the material resistance increases, and the oscillation amplitude of the lower blade 541 automatically increases. This reduces the drive load by agitation rather than hard cutting; on the other hand, the larger oscillation amplitude can more effectively agitate viscous materials or scrape the bottom of the container, preventing solid sedimentation. When the material system contains components with large density differences and easy stratification, the upper blade 531 inhibits stratification, while the lower blade 541 continuously disrupts the stratification interfaces that have begun to form, thereby achieving rapid and uniform mixing.

[0031] Obviously, the above embodiments are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, these obvious variations or modifications derived from the spirit of the present invention are still within the scope of protection of the present invention.

Claims

1. A stirring device for mixing multiple materials, characterized in that, The equipment includes a mixing tank (1), a main motor (2) is fixedly connected to the top center of the mixing tank (1), a main shaft (4) is fixedly connected to the bottom of the main motor (2), and a stirring assembly (5) is provided on the main shaft (4). The stirring assembly (5) includes a fixed shaft (51), a rotation shaft (52), an upper blade (531), a lower blade (541), and a swing limiter (55). The fixed shaft (51) of the stirring assembly (5) is fixedly connected to the main shaft (4) on one side. An upper blade (531) is provided on the fixed shaft (51). A blade motor (6) is also provided at the center of one side of the fixed shaft (51). The output end of the blade motor (6) is fixedly connected to the center of the rotation shaft (52). A lower blade (541) is provided on the rotation shaft (52). Swing limiting members (55) are fixedly connected to both sides of the fixed shaft (51). The swing limiting members (55) extend to both sides of the lower blade connector (54).

2. The stirring device for mixing multiple materials according to claim 1, characterized in that, The stirring assembly (5) also includes an upper blade connector (53), which is fixedly connected to a fixed shaft (51), and the bottom of the upper blade (531) is fixedly connected to the upper blade connector (53).

3. A stirring device for mixing multiple materials according to claim 2, characterized in that, The stirring assembly (5) also includes a lower blade connector (54), which is fixedly connected to the rotation shaft (52), and the top of the lower blade (541) is fixedly connected to the lower blade connector (54).

4. A stirring device for mixing multiple materials according to claim 3, characterized in that, The main motor (2) has a feed inlet (3) on one side, and the blade motor (6) is connected to the main shaft (4) on the other side.

5. A stirring device for mixing multiple materials according to claim 4, characterized in that, There are three stirring components (5), which are arranged alternately from top to bottom on the main shaft (4).

6. A stirring device for mixing multiple materials according to claim 5, characterized in that, The upper blade (531) is fixedly connected to the main shaft (4) on one side near the main shaft (4).

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