Bionic Agitator Dual Rotation Mixing Viscosity
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Solution Overview
Problem
Conventional agitators face challenges in effectively mixing fluids with different viscosities, as they often result in inefficient flow and mixing due to limitations in paddle design and rotation mechanisms.
Innovation Solution
A bionic agitator with paddles connected to a main shaft, featuring a first rotation about the main shaft axis and a second rotation about the paddle shaft axis, with paddle surfaces angled at 90° to each other, and a greater radial distance at the lower end than at the upper end, utilizing a non-rotatable connection and rolling element gearing to enhance fluid flow and mixing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional propeller designs are used, then the structure is simple, but the mixing efficiency of fluids with different viscosities is poor
Solution Approach 1:
The agitator employs paddles that can perform dual rotation: first rotation about the main shaft axis and second rotation about the paddle shaft axis. This dynamic motion allows the paddles to adapt to fluids of different viscosities, improving mixing efficiency while maintaining a relatively simple structural design.
Solution Approach 2:
The invention introduces a second rotation dimension by enabling paddles to rotate about their own paddle shaft axes in addition to the main shaft rotation. This additional rotational degree of freedom enhances fluid mixing capability without significantly complicating the overall agitator structure.
2Productivity
If paddle radial distance at lower end is increased, then fluid flow is improved, but the structural complexity increases
Solution Approach 1:
The agitator features asymmetric paddle arrangement where the radial distance of paddle shaft axes at the lower end (facing away from main shaft) is greater than at the upper end (facing main shaft). This asymmetric configuration optimizes fluid flow patterns and mixing effectiveness while avoiding overly complex structural designs.
3Productivity
If dual rotation mechanism is implemented, then mixing of fluids with different viscosities is improved, but energy expenditure increases
Solution Approach 1:
The dual rotation mechanism allows the paddles to dynamically adapt to different fluid viscosities, achieving efficient mixing without requiring excessive energy input. The first rotation about main shaft and second rotation about paddle shaft work synergistically to reduce overall energy expenditure compared to single-rotation designs.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The bionic agitator design achieves improved fluid flow and mixing by increasing the circumferential radius, reducing turbulence, and minimizing energy expenditure, while preventing fluid penetration into the transmission housing through sealing and stabilizing mechanisms.
Implementation Method 1
the second rotation being transmissible to the paddles through a rolling element gearing, the rolling element gearing being formed between the main shaft and the paddles
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
The invention relates to an agitator for mixing fluids having different viscosities, wherein the agitator (1) is a bionic agitator, comprising a main shaft (4) with a rotational axis (6) and with paddles (20) which are connected to the main shaft (4), wherein the paddles (20) each comprise a paddle shaft (15) with a paddle shaft axis (28), and wherein the paddle shaft axes (28) comprise a first angle (a) to the rotational axis (6), which angle has a value between 20º and 40º, and wherein the paddles (20) with the paddle surfaces (30) are arranged in a second angle (ß) of 90º to each other, and wherein the paddles (20), during operation of the agitator (1), exhibit a first rotation around the main shaft (4) and a second rotation around the respective paddle axes (28). According to the invention, in relation to the rotational axis (6), a radial first distance of the paddle shaft axes (28) to a bottom end (21) of the paddle shafts (15), which paddle end is formed facing away from the main shaft (4), is greater than a second distance of the paddle shaft axes (28) to an upper end of the paddle shafts (15) formed facing the main shaft (4), in relation to the rotational axis (6).