Angled Strainer Filter Screen for Wash Water Nozzle Clogging
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Solution Overview
Problem
In the aggregate and mining industries, wash water used in vibrating screens often contains entrained particulate materials that can block or plug spray nozzles, leading to uneven water distribution and significant downtime for equipment maintenance, especially in confined spaces.
Innovation Solution
A strainer device with a filter screen having an angled or curved shape is integrated into the water supply conduit to induce turbulent flow, separating particulates by gravity and preventing them from clogging the spray nozzles, featuring a convex side facing the fluid flow path and supported by plates to prevent buckling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wash water is used to spray aggregate on vibrating screens, then fines are effectively removed from aggregate, but spray nozzles become blocked by particulate materials
Solution Approach 1:
The strainer device is installed in the water supply line upstream of the spray nozzles to pre-filter the wash water before it reaches the nozzles. This preliminary action removes particulate materials that would otherwise cause blockage, ensuring continuous reliable operation of the spray system without interruption for cleaning.
Solution Approach 2:
The filter screen acts as an intermediary component between the wash water source and the spray nozzles. It mediates the harmful interaction by intercepting and retaining particulate materials, allowing only filtered water to reach the nozzles, thus preventing blockage while maintaining the washing function.
2Reliability
If manual cleaning of manifolds and nozzles is performed, then particulate blockage is removed, but equipment downtime and maintenance costs increase
Solution Approach 1:
The strainer device performs preliminary filtration of wash water before it reaches the spray nozzles, preventing particulate accumulation in the first place. This eliminates the need for periodic manual cleaning and associated equipment shutdowns, enabling continuous operation and reducing maintenance downtime.
Solution Approach 2:
The filter screen provides self-service by automatically removing particulate materials from the wash water stream through passive filtration. The design allows the filter to maintain itself through backflushing or simple screen replacement, eliminating the need for manual intervention and equipment shutdown for maintenance.
3Reliability
If filter screen has angled or curved shape with convex side facing flow, then turbulent flow is induced for better particulate separation, but structural stability decreases
Solution Approach 1:
The filter screen is designed with an angled or curved shape having a convex side facing the incoming flow. This curvature induces turbulent flow patterns that enhance particulate separation by gravity, improving filtration efficiency while the curved geometry provides structural strength to resist buckling under flow pressure.
Solution Approach 2:
The filter screen features an asymmetric design with a distinct convex side facing the flow direction and a concave side opposite to it. This asymmetric geometry optimizes flow patterns for turbulent mixing and particulate separation while maintaining structural integrity through the strategically positioned convex shape that resists flow-induced deformation.
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 strainer device effectively removes particulate debris from the wash water stream, ensuring consistent water distribution across vibrating screens, reducing equipment downtime and maintenance costs by preventing nozzle clogging and allowing for easy filter screen replacement.
Implementation Method 1
The strainer is configured to induce turbulent flow for separation of the particulates by gravity
Implementation Method 2
The strainer is configured to induce turbulent flow for separation of the particulates by gravity
Implementation Method 3
the filter screen blocking particulates above a given size
Data Source
AI summary
An aggregate processing system, including a water source, and a vibrating screen device including a plurality of spray nozzles disposed above a screen for spraying wash water onto aggregate during aggregate processing. A strainer device is provided for removing particulate debris from a water wash stream flowing from a water source to the spray nozzles, the strainer device including a filter screen having an angled shape with a convex side facing the strainer inlet and fluid flow path. The strainer is configured to induce turbulent flow for separation of the particulates by gravity, with the filter screen blocking particulates above a given size. In this manner, particulates which may otherwise lead to clogging of the spray nozzles are removed from the wash water stream.