Abrasive Water Jet Nozzle Mixing Assembly for Uniform Fan-Shaped Strengthening
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Solution Overview
Problem
Conventional abrasive water jet nozzles suffer from poor mixing of abrasive particles and high-speed water, leading to uneven strengthening effects and low enhancement efficiency due to thin jet beams.
Innovation Solution
An abrasive water jet nozzle design with a chamber and strengthening mixing assembly, featuring a water stopper block, symmetric dispersion surfaces, and a focusing tube mechanism to ensure uniform mixing and form a fan-shaped jet with a large central angle, enhancing the strengthening quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional post mixed abrasive water jet device is used, then the device structure is simple, but the mixing effect is poor and the strengthening effect is uneven
Solution Approach 1:
The mixing assembly is segmented into multiple functional components: water stopper block with impact surface and dispersion surface, curved fluid passage, and chamber dividing block. Each component performs a specific function in the mixing process, transforming the simple conventional structure into a multi-stage mixing system that ensures uniform distribution of abrasive particles and water.
Solution Approach 2:
The fluid passage is designed with a curved tube structure having gradual angle change, and the water stopper block features a curved impact surface. These curved geometries guide the high-speed water flow smoothly through the mixing chamber, promoting turbulent mixing and uniform distribution of abrasive particles while avoiding abrupt changes that would cause flow separation or dead zones.
2Productivity
If conventional nozzle is used, then the device structure is simple, but the jet beam is thin resulting in low enhancement efficiency
Solution Approach 1:
The focusing tube introduces a new dimensional aspect to the jet output by creating a fan-shaped beam pattern with a large central angle. This transforms the conventional thin one-dimensional jet into a two-dimensional fan-shaped spray pattern, increasing the effective area of impact and thereby improving enhancement efficiency.
Solution Approach 2:
The focusing tube modifies the geometric parameters of the jet beam by changing the angle distribution and spatial spread. The tube's specific geometry transforms the water flow into a fan-shaped pattern with controlled angular distribution, optimizing the coverage area and impact distribution for enhanced strengthening efficiency.
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 nozzle achieves uniform mixing of abrasive particles and water, resulting in a fan-shaped jet that improves the strengthening quality and efficiency by ensuring consistent impact across the workpiece.
Implementation Method 1
the water stopper block (102) has an impact surface (102a)... the outlet of the fluid passage (101) is directed towards the water stopper block (102)
Implementation Method 2
The abrasive particles carry huge energy to impact the metal target
Implementation Method 3
the abrasive particles carry huge energy to impact the metal target
Implementation Method 4
the presence of water forms a water medium adsorption film between the abrasive particles and the metal surface
Data Source
AI summary
An abrasive water jet nozzle for strengthening, including a chamber, providing a mixing space; and a strengthening mixing assembly, providing a strengthening mixing of water with an abrasive entering the chamber, wherein the strengthening mixing assembly includes a fluid passage and a water stopper block, wherein the water stopper block is located at an eccentric position on one side of the chamber, and an outlet of the fluid passage faces the water stopper block. The provided abrasive water jet nozzle is capable of fully mixing high speed water with the abrasive particles after the high speed water entering the mixing chamber, so as to ensure the uniformity of the strengthening effect, and the formed abrasive water jet is a large circular fan-shaped jet, which can greatly improve the strengthening quality of the abrasive water jet.