Non-metallic Separating Can with Flat Bottom
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Solution Overview
Problem
Existing non-metallic containment shells with concave or convex bottoms for compact pumps suffer from adverse effects on magnetic coupling length, leading to inefficiencies and heating issues due to induced eddy currents.
Innovation Solution
A cylindrical non-metallic containment shell with a collar-shaped connection geometry having parallel end faces perpendicular to the longitudinal axis, allowing for a flat bottom design, which includes a sealing element and fastening mechanism to prevent eddy currents and ensure a self-reinforcing seal, using materials like plastic or ceramic.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a non-metallic containment shell has a concave or convex bottom for compact pumps, then the load distribution is optimized, but the magnetic coupling length is adversely affected
Solution Approach 1:
The containment shell is divided into two separate parts: a cylindrical shell body and a separate bottom closure. This segmentation allows the shell body to maintain a simple cylindrical shape with flat ends for optimal magnetic coupling, while the separate bottom can be independently designed with concave or convex geometry for load distribution optimization.
Solution Approach 2:
The invention transitions from a monolithic three-dimensional curved bottom design to a two-part construction where the bottom is a separate component attached to the cylindrical shell. This dimensional separation resolves the conflict between magnetic coupling requirements (flat surfaces) and load distribution requirements (curved surfaces).
2Object-affected harmful factors
If a non-metallic material is used for the containment shell, then eddy currents are prevented, but the bottom must be curved to withstand pressure, which reduces compactness
Solution Approach 1:
By separating the containment shell into a cylindrical body and a distinct bottom closure, the invention allows the main shell to maintain a simple cylindrical shape with flat ends that prevent eddy currents, while the separate bottom can be independently optimized for pressure resistance without compromising the electromagnetic properties of the main shell.
3Ease of manufacture
If a monolithic non-metallic containment shell is used, then manufacturing is simplified, but the design cannot achieve both flat bottom and pressure resistance
Solution Approach 1:
The invention divides the monolithic containment shell into multiple manufacturable components: a cylindrical shell body that can be easily manufactured with flat ends, and a separate bottom closure that can be independently optimized for pressure resistance. This segmentation maintains manufacturing simplicity while achieving the desired geometric properties.
Solution Approach 2:
The separate bottom closure can be manufactured from composite materials or reinforced structures that provide enhanced pressure resistance, while the main cylindrical shell can use simpler non-metallic materials that prevent eddy currents. This composite approach allows each component to be optimized for its specific functional requirements.
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 achieves a compact, efficient, and heat-insulating containment shell with a flat bottom, preventing eddy currents and ensuring a tight seal, thereby enhancing the operational efficiency and reducing heating issues.
Implementation Method 1
heating issues due to induced eddy currents
Implementation Method 2
a sealing element and fastening mechanism to prevent eddy currents and ensure a self-reinforcing seal
Data Source
Figure 1
Figure 2~3
AI summary
The can (10) has a primary cover (20) comprising a cylindrical non-metallic base body (21) and a connection geometry (22) that is provided at an end of the cover. The geometry extends inward in a collar-shaped manner and includes two front surfaces (24, 26) running parallel to each other and running perpendicular to a longitudinal axis (X) of the cover. The geometry is connected with end pieces (30, 30') that represent a terminal surface of a separating can base. The cover is formed from plastic or fiber-reinforced plastic or carbon fiber reinforced plastic or ceramics.