Printing Press Motor Explosion Protection Wall
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing printing presses with electric motors using solvent-containing ink face high costs due to expensive explosion protection measures, as they require special motors and air evacuation systems to prevent ignition hazards.
Innovation Solution
A printing press design featuring an electric motor positioned within 0.5 meters of an emission source, supplemented by an explosion protection wall that maintains a minimum thread distance of over 0.5 meters, allowing for a compact and economical setup without expensive explosion-proof features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If special electric motors with explosion protection are used, then explosion safety is improved, but construction cost increases
Solution Approach 1:
An explosion protection wall is introduced as an intermediary element between the emission source and the electric motor. This wall creates a protective barrier that allows the use of standard, non-explosion-proof motors while maintaining safety requirements, thereby reducing construction costs without compromising explosion safety
2Reliability
If air evacuation systems are implemented, then explosion safety is improved, but device complexity increases
Solution Approach 1:
The complex air evacuation system is replaced by a simpler geometric solution - an explosion protection wall that passively creates the required thread measure. This extracts the safety function from an active, complex system to a passive, simple structural element, reducing device complexity while maintaining explosion safety
3Volume of moving object
If the electric motor is positioned close to the emission source, then device compactness is improved, but explosion safety deteriorates
Solution Approach 1:
The explosion protection wall extends the thread measure in a dimensional sense, creating a longer path through a labyrinthine structure. This allows the motor to be positioned physically close to the emission source (maintaining compactness) while the threaded path through the protection wall achieves the required 0.5m safety distance
Data Source
AI summary
A printing press (10) has at least one electric motor (14), which is arranged at a distance of less than 0.5 m from an emission source (18). At least one explosion protection wall (22) is provided, such that the thread measure (F) between the emission source (18) and the electric motor (14) is greater than 0.5 m.