Demolition Tool Nozzle Protection via Nested Frame
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Solution Overview
Problem
Existing demolition tools face challenges with dust collection during demolition work, as current methods for spraying pressurized fluid to capture dust are wind-sensitive, energy-intensive, and result in significant water loss, and the installation of spray nozzles on these tools is prone to damage.
Innovation Solution
A demolition tool design featuring a network of pressurized fluid circulation ducts with protected nozzle holders that allow for adjustable nozzle placement and orientation, ensuring protection without compromising fluid projection parameters, and enabling the use of various nozzle types such as fan or cone nozzles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If spray nozzles are installed on the demolition tool to capture dust, then dust collection effectiveness is improved, but the nozzles and ducts are exposed to damage during demolition work
Solution Approach 1:
The nozzles are integrated inside the hollow frame structure of the demolition tool. The frame contains internal cavities that house the nozzles and fluid circulation ducts, protecting them from external damage while allowing them to function during demolition operations
Solution Approach 2:
The hollow frame acts as a protective shell enclosing the vulnerable nozzle components. This shell structure provides mechanical protection while maintaining the functional integrity of the dust suppression system
2Area of stationary object
If a cannon propels water mist to capture dust at a distance, then dust collection coverage is improved, but water loss increases due to distance and wind sensitivity
Solution Approach 1:
Multiple nozzles are positioned at different locations on the frame, each targeting specific dust generation zones. This localized approach ensures water is applied only where needed, reducing overall water consumption while maintaining effective dust coverage
Solution Approach 2:
The nozzles are positioned to spray water mist in advance of dust generation points, creating a protective water barrier before dust becomes airborne. This preliminary action improves dust capture efficiency and reduces water waste from wind dispersal
3Object-affected harmful factors
If spray nozzles are installed on the demolition tool, then dust collection is improved, but the nozzles are easily damaged during operation
Solution Approach 1:
The nozzles are nested within the protected interior space of the frame structure, shielding them from mechanical impacts and damage during demolition operations while maintaining their spray functionality
4Adaptability or versatility
If the through passage is bent with an angle between 95° and 135°, then nozzle protection and fluid projection adjustment are optimized, but the manufacturing complexity increases
Solution Approach 1:
The through passage is designed with specific bend angles (95°-135°) to optimize fluid projection direction toward dust sources while protecting nozzles. This parameter optimization balances manufacturing feasibility with functional performance
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 solution effectively protects nozzles and ducts from damage while allowing for adjustable fluid projection angles, ensuring efficient dust collection without spraying sensitive mechanical parts, thus improving the tool's operational efficiency and reducing water loss.
Implementation Method 1
a network of pressurized fluid circulation ducts extending between the first and the second part, this network of ducts being connected, via at least one rotating coupling, to an inlet of a fluid under pressure
Implementation Method 2
this end of the through passage of the nozzle holder provided with the nozzle being oriented towards the ground in the upright state of the demolition tool resting on the ground by its jaws to allow the flap on the dust floor capable of being generated during use of the demolition tool
Data Source
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AI summary
demolition tool (1) comprising a first part (2) connectable to an arm of a handling machine and a second rotating part (3) coupled in rotation to the first part (2), this second part (3) comprising a frame (4) and two pivoting jaws (5), the tool (1) further comprising a network of conduits (71, 72) for circulating pressurized fluid extending between the first (2) and the second part (3). The second part (3) comprises a plurality of nozzle holders (10) fixed to the frame (4) and each comprising a threaded through passage for communication from the inside of the frame (4) with the outside, with one end of the through passage connected to one of the conduits (72) of the network extending at least partially inside the frame (4) and the other end of the through passage fitted with a nozzle screwed inside the through passage to extend flush or recessed from the outlet of said end of said passage.