Self-Supporting Flotation Tank with Integrated Overflow Receptacle
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Solution Overview
Problem
Existing flotation tanks lack a self-supporting, rigid structure that allows for easy handling, maintenance, and replacement, particularly when dealing with abrasive materials and varying overflow heights, and do not optimize flow patterns effectively.
Innovation Solution
A self-supporting flotation tank made of thermoplastic polymer with a tapered upper part and an integrated overflow receptacle, providing structural stiffness, adjustable overflow lip, and optimal flow patterns, along with a tank module framework for easy maintenance and replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If the flotation tank is made as a separate assembly from the overflow receptacle, then the overflow receptacle can be independently maintained, but the tank becomes more complex and harder to handle as a complete unit
Solution Approach 1:
The overflow receptacle is integrated with the flotation tank to form a single assembled unit. The receptacle is positioned to receive overflow from the tank and is structurally combined with the tank body, creating a unified assembly that simplifies handling and installation while maintaining functional separation for maintenance purposes.
2Ease of manufacture
If the tank is made without a rigid self-supporting structure, then the material usage is reduced, but the tank cannot hold its form and provides poor support for the overflow receptacle
Solution Approach 1:
The flotation tank is designed with a substantially spherical shape. This geometric form provides inherent structural stiffness and strength while using efficient material distribution. The spherical geometry naturally resists external loads and maintains its form without requiring excessive material or additional support structures.
Solution Approach 2:
The tank wall thickness is optimized locally, being substantially uniform throughout the spherical structure. This local quality optimization ensures that material is distributed where most needed for structural integrity, providing maximum strength with minimum material usage. The uniform thickness creates a self-supporting rigid structure that maintains form under various loading conditions.
3Ease of manufacture
If the upper tank part is straight-sided, then the manufacturing is simpler, but the flow pattern inside the tank is not optimal
Solution Approach 1:
The upper tank part is designed with a tapered configuration that transitions smoothly into the spherical lower portion. This curved, tapered geometry optimizes the flow pattern of the liquid within the tank, reducing turbulence and improving circulation efficiency compared to straight-sided designs, while remaining manufacturable through standard forming processes.
4Ease of manufacture
If the overflow lip is fixed at a single height, then the manufacturing is simpler, but the overflow height cannot be adjusted for different operating conditions
Solution Approach 1:
The overflow lip is designed as an adjustable component that can be positioned at different heights on the flotation tank. This dynamic configuration allows the overflow height to be modified according to different operating conditions and requirements. The lip may be mounted on an adjustable support structure or directly positioned at selectable height locations on the tank body, providing operational flexibility while maintaining a relatively simple manufacturing process for each fixed position option.
Data Source
Figure 1~2
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Figure 5~6
AI summary
A flotation tank (1) comprises a self-supporting tank (2). The tank (2) is made of thermoplastic polymer. The tank (2) has a lower tank part (3) and a tapered upper tank part (4) which is narrower than the lower tank part (3). The tank (2) has a mouth (5) at the upper end of the upper tank part (4) and an overflow lip (6) at the periphery of the mouth (5). The flotation tank (1) further comprises an overflow receptacle (7). The overflow receptacle (7) is made of thermoplastic polymer and connected to the tapered upper part (4) of the tank (2) beside the overflow lip (6) for receiving, collecting and discharging an overflow that overflows from the tank (2) over the overflow lip (6), when in use.