Abrasive Nozzle Head Modular Mixer Replacement
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Solution Overview
Problem
The existing abrasive nozzle heads require labor-intensive and time-consuming processes for replacing consumable components, particularly the mixer member, due to differing service lives and the need for disassembling the entire head, which can lead to premature seal failure and increased maintenance time.
Innovation Solution
The abrasive nozzle head features a recessed hole for removably inserting a mixer member with a positioning and fixing mechanism, allowing for coaxial alignment and easy replacement without disassembling the entire head, along with an integrally formed abrasive supply hose adapter and separate water nozzle fitting, reducing the number of steps required for maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the mixer member is replaceable independently, then the replacement time is reduced, but the coaxial alignment precision may deteriorate
Solution Approach 1:
The nozzle head is segmented into modular components: the mixer member is separated from the head body, allowing independent replacement of the mixer member without disassembling the entire nozzle head. This segmentation enables maintenance personnel to quickly replace only the worn mixer member while leaving other components in place.
Solution Approach 2:
A positioning portion is introduced as an intermediary element between the mixer member and the head body. This positioning portion ensures that when the mixer member is installed, it is automatically aligned coaxially with the water nozzle and abrasive nozzle, thereby maintaining alignment precision without requiring complex adjustment procedures during replacement.
2Adaptability or versatility
If the entire head is disassembled for component replacement, then all components can be inspected, but the maintenance complexity increases
Solution Approach 1:
The mixer member is extracted as an independent replaceable component from the nozzle head assembly. By taking out only the mixer member that requires replacement rather than disassembling the entire head, the maintenance process is simplified while still allowing thorough inspection and replacement of the specific worn component.
Solution Approach 2:
The nozzle head design transitions from a static, integrated structure to a dynamic, modular structure where the mixer member can be independently removed and reinstalled. This dynamic design allows flexible maintenance operations where only the necessary components are accessed, reducing overall maintenance complexity.
3Adaptability or versatility
If the water nozzle is removed with the mixer member, then both can be replaced, but the seal failure risk increases
Solution Approach 1:
The mixer member is designed to be self-contained with all necessary mounting and positioning features integrated into it. The positioning portion on the mixer member itself enables it to be installed and aligned without requiring removal of other components like the water nozzle, allowing the mixer member to serve itself during replacement operations.
Data Source
AI summary
The abrasive nozzle head includes, within a hollow head body mounted to a nozzle adapter supplying high pressure water: a water nozzle; a mixing chamber; and an abrasive nozzle, which are arranged coaxially with the nozzle adapter. The abrasive nozzle head is provided with an abrasive supply portion that supplies an abrasive to the mixing chamber. The head body has a recessed hole formed by drilling from a side surface, the recessed hole intersecting with the jet axis of a water jet. A mixer member is removably inserted into the recessed hole, and formed with the mixing chamber and an abrasive supply port. The abrasive nozzle head also includes: a positioning portion that positions the mixing chamber coaxially with the water nozzle and the abrasive nozzle when the mixer member is fully inserted; and a fixing portion that releasably fixes the mixer member in the fully inserted position.