Conveyor Drive Roller Venting for Internal Pressure Relief
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Solution Overview
Problem
Conveyor drive rollers experience internal pressure and temperature buildup due to friction, leading to seal failure and premature degradation of components, which results in costly repairs and downtime.
Innovation Solution
Incorporation of a pressure relief valve in the conveyor drive roller to reduce gas pressure increases caused by temperature rises, using a conduit to expel pressurized gas outside the sealed chamber.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the conveyor drive roller is sealed to prevent dirt and debris entry, then reliability is improved, but internal pressure increases due to heat buildup, leading to seal failure
Solution Approach 1:
A pressure relief valve is introduced as an intermediary component between the sealed interior and exterior environments. This valve selectively releases excess pressure while maintaining the seal's protective function, resolving the contradiction between keeping the system sealed for reliability and allowing pressure relief to prevent seal failure
Solution Approach 2:
The pressure relief valve changes the pressure parameter inside the sealed chamber by releasing excess pressure when it exceeds a predetermined threshold. This dynamic parameter adjustment allows the system to maintain sealing integrity while preventing dangerous pressure buildup from heat generation during operation
2Strength
If the seal remains intact under pressure, then component protection is improved, but the pressure buildup causes seal failure and lubricant leakage
Solution Approach 1:
The pressure relief valve converts the harmful effect of pressure buildup into a beneficial controlled release mechanism. By intentionally providing a controlled path for pressure release, the system prevents uncontrolled seal failure and transforms the harmful pressure accumulation into a managed safety feature that protects overall seal integrity
3Reliability
If friction is reduced through proper sealing, then component wear is decreased, but heat buildup increases internal pressure
Solution Approach 1:
The pressure relief valve extracts excess pressure from the sealed interior environment. By removing the harmful pressure buildup caused by heat generation, the system maintains proper sealing and lubrication conditions, thereby reducing component wear while accommodating the inevitable heat from friction
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
Maintains optimal internal pressure and temperature levels, preventing seal failure and extending the conveyor drive roller's service life by reducing friction and component degradation.
Implementation Method 1
a pressure relief valve positioned on the conveyor drive roller in fluid communication with the inside of the sealed chamber, and configured to reduce a gas pressure increase inside of the sealed chamber caused by a rise in a temperature of the conveyor drive roller during operation
Data Source
AI summary
A conveyor drive roller for a conveyor system. The conveyor drive roller has a hollow drum rotatably connected to a first stationary shaft and a second stationary shaft, and defines a sealed chamber. The chamber at least partially encloses means to rotate the hollow drum about the first and second stationary shafts. A pressure relief valve is positioned on the conveyor drive roller in fluid communication with the inside of the chamber. The pressure relief valve is configured to reduce a gas pressure increase inside of the chamber caused by a rise in a temperature of the conveyor drive roller during operation.