Removable Liner for Hazardous Material Drum
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Solution Overview
Problem
Current industrial containers for hazardous materials, particularly tight head drums, lack a removable liner option, leading to frequent cleaning and replacement needs, contamination risks, and increased manufacturing costs.
Innovation Solution
A specialty container design featuring a removable liner within the shell, made from materials like HDPE or polypropylene, with a disk seal and bung opening for easy access and replacement, offering a hybrid solution between tight and open head drums.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a tight head drum is used, then security and manufacturing cost are improved, but the drum requires frequent cleaning and replacement leading to waste and contamination
Solution Approach 1:
The drum system is segmented into two functional parts: a permanent tight head drum shell and a removable liner. The liner can be extracted and replaced without replacing the entire drum, allowing the drum shell to be reused while preventing contamination through liner replacement.
Solution Approach 2:
The liner is designed as a disposable or replaceable component that can be discarded after use, while the expensive drum shell is retained and reused. This approach reduces overall waste and contamination risk without requiring complete drum replacement.
2Ease of operation
If an open head drum is used, then accessibility and ease of operation are improved, but the drum becomes more expensive and less secure
Solution Approach 1:
The drum is divided into a permanent tight head shell and a removable liner with an open head design. This allows the liner to provide easy accessibility while the shell maintains the secure tight head structure, combining benefits of both drum types.
Solution Approach 2:
The removable liner acts as an intermediary component that provides the functionality of an open head drum (accessibility) within the structure of a tight head drum (security). The liner mediates between the conflicting requirements of accessibility and security.
3Reliability
If a removable liner is added to a tight head drum, then contamination prevention and waste reduction are improved, but the device complexity increases
Solution Approach 1:
The removable liner is nested within the drum shell, with the liner fitting inside the shell like a doll within a doll. This nested structure allows the liner to be easily inserted and removed without complex assembly mechanisms, minimizing added complexity while providing contamination prevention.
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
This design reduces waste and contamination, lowers manufacturing costs, and allows for efficient storage, transportation, and disposal of hazardous materials by minimizing the need for frequent drum cleaning and replacement.
Implementation Method 1
the disk can be a thermoformed plastic disk heat sealed to the top portion of the liner
Data Source
AI summary
A liner for use in a container can include a liner wall defining an interior cavity of the liner. The liner includes a top portion and a bottom portion sealed to the liner wall, the tip portion comprising an opening. The liner further includes a disk sealed to the top portion of the liner, the disk covering the opening.