Multifunction Cap Replacement Module for Chemical Drum Handling
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Solution Overview
Problem
The semiconductor industry faces challenges in safely and efficiently replacing chemical storage drums due to the complexity and potential hazards associated with flammable, toxic, and corrosive chemicals used in manufacturing processes, which can lead to personal injury and property damage if not managed properly.
Innovation Solution
A multifunction cap replacement module is developed, featuring a cap rotation module supporter with first and second cap rotation devices for opening and closing chemical drum seals, and a chemical drum storing device with a supporting frame, enabling safe and efficient extraction and reflux of chemical liquids, along with a ventilating channel to manage evaporated gases and isolating components to prevent contamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual replacement of chemical storage drums is used, then operational simplicity is maintained, but safety and efficiency are compromised due to hazards of flammable, toxic, and corrosive chemicals
Solution Approach 1:
The patent introduces an automated cap rotation module as an intermediary device between the operator and the chemical drum. This module includes a cap rotator for opening/closing caps, a liquid extractor for removing chemical liquid, and a reflux device for returning liquid to the drum. The intermediary system handles all hazardous operations automatically, eliminating direct human exposure to flammable, toxic, and corrosive chemicals while maintaining operational control.
Solution Approach 2:
The patent replaces manual mechanical operations with an automated mechanical system. The cap rotator uses motorized rotation instead of manual cap opening, the liquid extractor uses automated pumping mechanisms, and the reflux device uses controlled liquid return systems. This substitution reduces human exposure to hazards while maintaining precise control over the chemical handling process.
2Ease of operation
If automated cap rotation devices are introduced, then safety is improved by reducing human exposure to chemicals, but device complexity increases
Solution Approach 1:
The cap rotation module is designed as a multi-functional integrated system that performs multiple operations through a single device. The same module can open caps, extract liquid, return liquid, and handle multiple chemical drums sequentially. This universality reduces the need for multiple separate devices and simplifies the overall operational workflow despite the complexity of individual components.
Solution Approach 2:
The patent employs a nested structure where the cap rotator, liquid extractor, and reflux device are integrated within a compact housing that can be positioned on or near the chemical drum. The horizontal moving module allows the entire assembly to be repositioned between drums. This nesting approach consolidates multiple functions into a space-efficient unit, reducing operational complexity.
3Productivity
If chemical liquid extraction and reflux operations are performed, then drum replacement efficiency is improved, but occupational hazards increase due to evaporated chemical gases
Solution Approach 1:
The patent introduces a ventilating channel as an intermediary safety mechanism. This channel is integrated into the cap rotation module structure and provides a controlled pathway for evaporated chemical gases to escape from the operational area. The ventilating channel acts as a mediator between the hazardous chemical liquid handling process and the operator environment, allowing efficient extraction and reflux operations while maintaining safety through controlled ventilation.
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 module enhances safety and convenience in semiconductor fabrication by allowing for the safe and reliable handling of chemical drums, reducing occupational hazards and improving yield by facilitating the easy replacement and management of chemical storage drums.
Implementation Method 1
The cap rotator opens the sealing cap
Implementation Method 2
the liquid extractor extracts the chemical liquid
Implementation Method 3
the liquid reflux device flows the chemical liquid back to the chemical drum
Implementation Method 4
The cap rotation module central post includes a ventilating channel to exhaust an evaporated chemical gas of the chemical drum out of the cap rotation module
Data Source
AI summary
A multifunction cap replacement module includes a cap rotation module supporter and at least one cap rotation module. The cap rotation module is mounted to the cap rotation module supporter, and the cap rotation module includes a first cap rotation device and a second cap rotation device. The first cap rotation device is configured to open one sealing cap of at least one chemical drum and extract a chemical liquid from the chemical drum, and the second cap rotation device is configured to open another one sealing cap of the chemical drum and allow the chemical liquid to flow back to the chemical drum.