Centrifugal Impeller Propeller Pump for Suspended Solids
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Solution Overview
Problem
Existing pump systems are not designed to efficiently and economically pump liquids with suspended solids, lacking safety and efficiency in handling such fluids.
Innovation Solution
A centrifugal impeller/propeller pump system comprising a housing with major and minor components, a rotatable assembly with an annular plate and propeller, and bolts/nuts for secure operation, which creates a chamber for efficient liquid handling and expulsion through impeller segments and propeller blades.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional pump systems are used, then the structure is simple and easy to manufacture, but they cannot efficiently pump liquids with suspended solids
Solution Approach 1:
The pump system is divided into distinct functional segments: a centrifugal impeller section for initial liquid intake and a propeller section for final expulsion. The impeller has multiple curved vanes arranged radially, while the propeller has angled blades, allowing each segment to perform its specific function optimally while handling liquids with suspended solids
Solution Approach 2:
The patent combines two different pumping mechanisms (centrifugal impeller and propeller) into a single integrated system. The impeller and propeller are coupled together on the same shaft within a common housing, merging their functions to achieve efficient pumping of difficult liquids while maintaining a compact design
2Reliability
If conventional pump designs are used, then manufacturing cost is low, but safety and efficiency in handling liquids with suspended solids is poor
Solution Approach 1:
Different parts of the pump system have specialized local characteristics: the impeller vanes are curved to handle solids gently, the propeller blades are angled for efficient expulsion, and the housing includes a solids passage with specific geometry. Each component is locally optimized for its specific function while maintaining overall manufacturability
Solution Approach 2:
The centrifugal impeller acts as an intermediary between the liquid intake and the propeller expulsion system. It pre-processes the liquid with suspended solids, separating and directing the flow in a controlled manner before the propeller finalizes the pumping action, thereby protecting the propeller from excessive solid accumulation
3Productivity
If conventional pump systems are used, then the structure is simple, but productivity and efficiency in pumping liquids with suspended solids is insufficient
Solution Approach 1:
The coupled impeller-propeller system ensures continuous pumping action without interruption. The impeller continuously draws liquid in through its curved vanes while the propeller simultaneously expels it through its angled blades, maintaining constant flow and maximizing productivity throughout operation
Solution Approach 2:
The pump system utilizes dynamic geometry in both the impeller and propeller designs. The impeller vanes are curved to create rotational motion, while the propeller blades are angled to convert this rotation into axial flow. This dynamic design allows the system to adapt to varying flow conditions and maintain high productivity
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 system enables safe, efficient, and economical pumping of liquids with suspended solids by effectively drawing and expelling fluids through the impeller and propeller mechanism, addressing the limitations of prior art designs.
Implementation Method 1
a centrifugal impeller/propeller pump system
Data Source
AI summary
A housing includes a major component. The major component has a planar section. The planar section has an aperture constituting an inlet. The major component has a generally cylindrical peripheral section. A tangential extension is provided. The aperture constitutes an outlet. The housing also includes a minor component. The minor component has a planar section. The planar section has an aperture. The aperture constitutes an outlet. A tangential extension is adapted to overlie the major component for creating a chamber. A rotatable assembly includes an annular plate. The annular plate has an aperture. Spaced impeller segments are provided. A propeller is also provided. The propeller has an axial bore. Propeller blades are provided. Openings are provided between the blades. The bore is adapted to receive a drive shaft of a motor. In this manner the propeller and the annular plate and the impeller segments are rotated.