Perforated Blowing Pipe With Adjustable Venting for Dust Control
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Solution Overview
Problem
Existing blowing machines for loose-fill insulating products face issues such as dust raising and excessive compaction due to high air pressure, which affect insulation effectiveness.
Innovation Solution
A pipe with movable shutoff devices that adjust air flow rate by covering or uncovering perforated sections, allowing precise control of air pressure and flow without altering the inlet flow rate, using filtration devices to block insulating product passage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If high air pressure is used to transport insulating product through the pipe, then the spraying capability and transport speed are improved, but dust raising and excessive compaction occur
Solution Approach 1:
The pipe is divided into multiple sections with evacuation orifices distributed at different locations. This segmentation allows air to be evacuated at multiple points along the pipe, creating localized pressure reduction zones that prevent dust raising and compaction while maintaining overall air flow rate for effective spraying.
Solution Approach 2:
Evacuation orifices are strategically positioned at specific locations along the pipe where pressure buildup is most likely to cause harmful effects. By applying local pressure reduction only where needed rather than uniformly along the entire pipe, the system maintains high air flow rate for spraying while preventing dust raising and compaction at critical zones.
2Object-affected harmful factors
If air pressure is reduced to prevent dust raising and compaction, then harmful effects are minimized, but the spraying effectiveness and transport capability deteriorate
Solution Approach 1:
The pipe is divided into multiple sections with evacuation orifices distributed at different locations. This segmentation allows air to be evacuated at multiple points along the pipe, creating localized pressure reduction zones that prevent dust raising and compaction while maintaining overall air flow rate for effective spraying.
Solution Approach 2:
Evacuation orifices are strategically positioned at specific locations along the pipe where pressure buildup is most likely to cause harmful effects. By applying local pressure reduction only where needed rather than uniformly along the entire pipe, the system maintains high air flow rate for spraying while preventing dust raising and compaction at critical zones.
3Object-affected harmful factors
If evacuation orifices are added to reduce air pressure, then dust raising and compaction are reduced, but device complexity increases
Solution Approach 1:
The pipe is divided into multiple sections with evacuation orifices distributed at different locations. This segmentation allows air to be evacuated at multiple points along the pipe, creating localized pressure reduction zones that prevent dust raising and compaction while maintaining overall air flow rate for effective spraying.
Solution Approach 2:
Evacuation orifices are strategically positioned at specific locations along the pipe where pressure buildup is most likely to cause harmful effects. By applying local pressure reduction only where needed rather than uniformly along the entire pipe, the system maintains high air flow rate for spraying while preventing dust raising and compaction at critical zones.
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
Reduces dust and compaction issues while maintaining effective insulation by adjusting air pressure and flow rate, ensuring correct spraying of insulating products.
Implementation Method 1
the at least one evacuation orifice of each of the at least two perforated sections is configured to open both onto the interior of the pipe and onto the exterior of the pipe. Reducing the outlet flow rate makes it possible in particular to avoid the raising of dust
Implementation Method 2
the pipe comprising at least two shutoff devices that are movable in translation along the longitudinal direction about the cylindrical wall, each of the shutoff devices being able to cover specifically one of the perforated sections
Implementation Method 3
a filtration device which is configured to block the passage of the insulating product through the at least one evacuation orifice of each of the at least two perforated sections
Data Source
AI summary
A pipe for the aeraulic transport of a loose-fill insulation product for a machine for blowing the insulating product, the pipe extending along a longitudinal main elongation direction and including at least one cylindrical wall which delimits a space configured for the circulation at least of the loose-fill insulating product, wherein, in the pipe, the cylindrical wall includes a plurality of sections, at least two of the sections each including at least one evacuation orifice so as to form at least two perforated sections, the pipe including at least two shutoff devices that are movable in translation along the longitudinal direction about the cylindrical wall, each of the shutoff devices being able to cover specifically one of the perforated sections.