Floating Bait Dish in Airtight Sewer Housing
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Solution Overview
Problem
Existing bait stations in sewer systems face challenges in keeping bait dry during rising water levels and ensuring easy access for maintenance, while also preventing bait contact with water and toxins.
Innovation Solution
A bait station design featuring a bait tray that floats with the bait, allowing water to enter through lower water openings, maintaining an air bubble above to keep the bait dry, and an anchoring system for easy installation and retrieval outside the sewer shaft, enabling single-person handling and reduced maintenance complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the bait station is permanently mounted on the wall of a sewer shaft with the bait positioned high, then the bait is kept dry during rising water levels, but the access to the bait becomes difficult and requires climbing or standing upright
Solution Approach 1:
The bait bowl is made detachable and repositionable within the housing, allowing it to be dynamically adjusted between a low position for easy animal access and a high position for bait protection during maintenance or retrieval operations
Solution Approach 2:
A removable partition wall is introduced as an intermediary element that can be positioned to create separate compartments, allowing the bait bowl to be isolated and protected from water while maintaining accessibility through the floor opening
2Ease of operation
If the bait station is open at the bottom for easy access, then animals can easily reach the bait, but the bait and particles may fall or slide down and come into contact with the water
Solution Approach 1:
The interior space is segmented into an upper bait-containing zone and a lower water zone by the removable partition wall, allowing the bait bowl to be positioned in the upper zone while maintaining floor-level accessibility through the open bottom
Solution Approach 2:
The partition wall creates a localized protected zone around the bait bowl with different water exposure characteristics than the rest of the housing interior, allowing selective protection where needed while maintaining openness elsewhere
3Reliability
If the bait station has a closed bottom design, then the bait is protected from water contact, but the installation and maintenance require entry into the sewer shaft
Solution Approach 1:
The housing transitions from a permanently closed design to a dynamically configurable structure where the bottom can be opened or closed based on operational needs, allowing easy maintenance access when open and water protection when closed
Solution Approach 2:
The floor opening serves multiple functions: it allows easy maintenance access from the outside, enables animals to access the bait from below, and can be closed with a cover when water protection is needed without requiring shaft entry
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 ensures the bait remains dry and effective, extends bait station lifespan by containing particles, and simplifies maintenance and installation by allowing external access and handling, improving acceptance and reliability.
Implementation Method 1
the air bubble enclosed inside the bait station provides buoyancy, allowing the bait station to float freely on the water
Implementation Method 2
the bait bowl, together with the bait contained therein, floats within the housing at the water level therein
Data Source
Figure 1~2
Figure 3~4
Figure 5~7
AI summary
In a bait station (20) with a housing (10) open at the bottom and airtight at the top, and with a holder (15) for receiving the bait, which is arranged inside the housing (10), the invention proposes that a floating bait dish (6) is arranged in a housing (10) and that the housing (10) is designed to be airtight in the upper area and forms an air chamber, and has water openings (9) in the lower area, such that the bait dish (6) can float in the housing (10) as the water level rises and the water level in the housing (10) is limited by the fact that an air bubble is enclosed in the upper area of the housing (10) at correspondingly high water levels.