Adjustable Blade Impeller Lever Regulator Vibration Reduction
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Solution Overview
Problem
The existing blade adjustment structures in electric pumps are complex, leading to high manufacturing costs, difficult installation and maintenance, and a high damage rate due to looseness during operation, which affects efficiency and reliability.
Innovation Solution
An adjustable blade impeller design with a lever regulator structure, featuring a control shaft, crank, connecting rod, and drive rod, allowing for angle adjustment of the spherical blade within a rotor, reducing manufacturing costs and simplifying installation and maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a prior blade adjustment structure is used, then the blade angle can be adjusted, but the structure becomes complex resulting in high manufacturing cost and difficult installation and maintenance
Solution Approach 1:
The blade adjustment mechanism is divided into modular components: control shaft, crank, connecting rod, and operating frame. Each component performs a specific function and can be independently manufactured and assembled, reducing overall structural complexity while maintaining adjustment capability
Solution Approach 2:
Instead of adjusting the blade through complex internal mechanisms within the blade itself, the patent inverts the approach by using a separate operating frame and connecting rod system that acts on the blade from the outside, simplifying the overall structure
2Adaptability or versatility
If a prior blade adjustment structure is used, then the blade angle can be adjusted, but the structure is liable to be loose during operation resulting in high damage rate
Solution Approach 1:
The control shaft is nested within the blade body, and the crank is nested within the operating frame. This nested arrangement reduces the number of external connections and potential loose joints, improving operational stability while maintaining adjustment functionality
Solution Approach 2:
The connecting rod acts as an intermediary between the crank and the operating frame, providing a stable mechanical link that distributes forces evenly and prevents loosening through proper force distribution across multiple connection points
3Adaptability or versatility
If a prior blade adjustment structure is used, then the blade angle can be adjusted, but the axial length of the electric pump increases
Solution Approach 1:
The blade adjustment mechanism utilizes radial space within the rotor rather than extending axially. The operating frame and connecting rod are arranged in the radial plane, allowing blade angle adjustment without increasing the axial length of the pump
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 solution results in a compact, efficient, and reliable electric pump with reduced vibration and start-up torque requirements, enabling efficient operation across various head ranges.
Implementation Method 1
A rotor drives the drive shaft to rotate through a first sliding bearing, and the blade body rotates in the spherical inner cavity of the inner side of the rotor inner ring through the first sliding bearing
Implementation Method 2
the other end of the control shaft is connected to the crank through a second sliding bearing
Data Source
AI summary
An adjustable blade of an impeller built-in electric pump includes a blade body, where the blade body realizes an angle adjustment through a lever regulator structure. The lever regulator structure includes a control shaft arranged at a root of the blade body, the other end of the control shaft is connected to a crank, the other end of the crank is rotatably connected to one end of a connecting rod, the other end of the connecting rod is rotatably connected to an operating frame, and the operating frame is provided with a drive rod configured to drive the operating frame to move. The adjustable blade of the impeller built-in electric pump has the advantages of being compact and simple, low manufacturing cost and low difficulty of installation and maintenance. Moreover, by adjusting the angle of the blade, the vibration during the start-up of the unit can be effectively reduced.