Reducing Bush Filtration Layout for Clog-Resistant Fire Nozzles
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Solution Overview
Problem
Firefighting and fire suppression systems, particularly in marine environments, face blockages and corrosion issues due to scale, debris, and marine growth, leading to system failures and safety risks.
Innovation Solution
A reducing bush apparatus with separate threaded portions for filters and nozzles, allowing for the use of wider filters and interchangeable components, which reduces blockages and maintains fluid flow by filtering out debris before it reaches the nozzle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a filter is made to extend through the reducing bush (conventional design), then the filter can be attached to the reducing bush, but the outer diameter of the filter is limited by the inner diameter of the reducing bush, restricting filter size and strength
Solution Approach 1:
The invention divides the conventional integrated filter-reducing bush assembly into separate components: a standalone filter with external threading and a reducing bush with an internal threaded portion. This segmentation allows the filter to be attached to the reducing bush without extending through it, enabling the filter to have a larger outer diameter and greater wall thickness for improved strength and filtering capability.
2Reliability
If scale, debris and pollutants build up in the pipeline, then blockages occur leading to system failure, but conventional filters are limited in size and cannot effectively prevent blockages
Solution Approach 1:
The filter is positioned upstream in the fluid flow path, before the nozzle, to preliminarily remove scale, debris and pollutants from the water stream. This preliminary filtering action prevents harmful particles from reaching the nozzle and causing blockages, thereby maintaining system reliability.
Solution Approach 2:
The filter employs a porous structure with multiple filtering surfaces that allow water to pass through while trapping scale, debris and pollutants. The porous material enables effective filtration with a compact design that can be integrated into the reducing bush apparatus.
3Ease of manufacture
If existing nozzles and filters are to be used (cost minimization), then interchangeability is needed, but conventional reducing bushes do not provide threaded portions for separate filter attachment
Solution Approach 1:
The reducing bush is designed with a standardized internal threaded portion that can accommodate various filters with matching external threads. This universal threading design allows different filters and nozzles to be interchangeably mounted on the same reducing bush, providing adaptability and versatility while minimizing manufacturing costs by using existing standard components.
Data Source
Figure 1a
Figure 1b
Figure 1c~1cD
AI summary
A pipeline apparatus comprising a reducing bush apparatus having a reducing bush, and a pipe fitting comprising a threaded socket. The reducing bush has an outer surface which comprises a threaded portion connected to the threaded socket of the pipe fitting. The reducing bush comprises a bore extending from a first end to a second end, the bore having an inner surface. The inner surface comprises a first threaded portion at its first end on an inside of the pipe fitting, and a second threaded portion at its second end on an outside of the pipe fitting. The outer surface has a larger diameter than the second end of the inner surface. Embodiments further include both a filter and nozzle threadably engaged, on opposite sides of the reducing bush.