Horizontal Agitator Flow Direction and Adaptive Blade Design
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Solution Overview
Problem
Conventional horizontal agitators for clearing basins have low efficiency and are not universally applicable, requiring specific propeller designs for each basin size and operating speed, which is costly and time-consuming.
Innovation Solution
A horizontal agitator design where the propeller and submersible motor configuration directs flow from the propeller to the motor, eliminating flow hindrances, with elastically deformable blades and bent end sections to optimize efficiency across varying conditions, and a double propeller arrangement to counteract spiral flows, along with plate-shaped flow conducting elements to prevent braided flows.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the submersible motor is arranged axially to the propeller (conventional design), then the structure is compact, but flow hindrances reduce efficiency
Solution Approach 1:
The patent inverts the conventional flow direction arrangement. Instead of directing flow from the motor toward the propeller (creating suction-side hindrances), the design directs flow from the propeller toward the motor, eliminating flow resistance on the critical suction side of the propeller while maintaining axial arrangement for structural compactness
2Productivity
If a specific propeller is selected for each clearing basin size (conventional design), then optimal efficiency is achieved, but manufacturing costs and time increase
Solution Approach 1:
The patent employs parameter changes by making the propeller blades elastically deformable. The blades are constructed from composite materials with specific fiber arrangements that allow them to automatically adjust their pitch angle in response to varying operating conditions (rotation speed, fluid density, viscosity), enabling a single propeller design to optimize performance across different clearing basin sizes and operational parameters
Solution Approach 2:
The propeller transitions from a static, rigid blade design to a dynamic, adaptive design where blade pitch angle changes continuously based on operating conditions. This dynamic adjustment allows the propeller to maintain optimal efficiency across a wide range of rotation speeds and fluid conditions without requiring multiple specialized propellers
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 design significantly improves efficiency by allowing operation over a wide range of speeds and basin sizes without the need for multiple propellers, reducing manufacturing costs and extending bearing life by matching propeller density with the liquid medium.
Implementation Method 1
an elastic deformation of the blades made of elastically deformable material is set so that, at least in the area of a radial, outer section, their profile pitch angle increases in a specified manner with increasing rotation speed
Implementation Method 2
a flow is produced which is directed from the propeller to the submersible motor
Data Source
AI summary
The invention relates to a horizontal agitator for producing a flow in a clearing basin, wherein a propeller (2) having a plurality of blades (4) is connected to a submersible motor (1) axially disposed thereto. In order to increase the efficiency of the horizontal agitator, according to the invention the propeller (2) and the submersible motor (1) are configured such that during operation of the submersible motor (1) a flow (P2) that is directed from the propeller (2) to the submersible motor (1) is produced.