Dispensing Device Mixing and Spray Head Assembly
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional spray assemblies for two-component materials often result in limited mixing and undesirable aerosol formation when using compressed air, leading to non-homogeneous distribution on the sprayed surface, especially for large surface applications.
Innovation Solution
A dispensing device with a mixing and spray head assembly that homogenously mixes two or more components before they enter the spray nozzle, featuring a transfer housing and a mixing and spray piece that can be easily exchanged, including serrated mixing elements and a swirl chamber for efficient mixing prior to spraying.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional spray assemblies are used for two-component materials, then the materials can be dispensed, but the mixing is limited and aerosol formation occurs leading to non-homogeneous distribution
Solution Approach 1:
The spray assembly is divided into separate functional components: a static mixer section with mixing elements and a spray nozzle section. This segmentation allows independent optimization of mixing and spraying functions, ensuring thorough mixing before the materials enter the spray nozzle, thereby achieving homogeneous distribution without aerosol formation.
Solution Approach 2:
The static mixer elements are positioned upstream of the spray nozzle to pre-mix the two-component materials before they are sprayed. This preliminary mixing action ensures that the materials are homogenously combined prior to atomization, preventing non-homogeneous distribution on the sprayed surface.
2Productivity
If compressed air is used to assist spraying, then the materials can be sprayed, but undesirable aerosol formation occurs
Solution Approach 1:
The invention removes the compressed air assistance mechanism from the spray system. By eliminating the compressed air inlet and associated airflow generation, the system avoids creating aerosol clouds while maintaining effective spray delivery through the designed nozzle geometry and pressure differential.
3Ease of operation
If the mixing and spray assembly is made exchangeable for simplicity, then component replacement is easy, but ensuring consistent mixing performance requires precise alignment
Solution Approach 1:
The connection interface between the mixing assembly and the dispensing device incorporates asymmetric alignment features such as keyed slots or asymmetric positioning elements. This asymmetric design ensures that the mixing assembly can only be installed in one correct orientation, guaranteeing precise alignment of the mixing elements with the material flow paths while maintaining easy exchangeability.
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
Ensures a homogeneous mixture and prevents aerosol formation by efficiently mixing components before spraying, allowing for a simple exchange of the mixing and spray assembly, ensuring a consistent distribution on the sprayed surface.
Implementation Method 1
serrated mixing elements and a swirl chamber for efficient mixing prior to spraying
Implementation Method 2
serrated mixing elements and a swirl chamber for efficient mixing prior to spraying
Implementation Method 3
serrated mixing elements and a swirl chamber for efficient mixing prior to spraying
Implementation Method 4
serrated mixing elements and a swirl chamber for efficient mixing prior to spraying
Data Source
AI summary
The spray assembly of a dispensing device is arranged together with a mixing assembly inside a mixing and spray head, the mixing assembly being arranged before the swirl chamber of the spray assembly, and the mixing and spray head, which forms a unit, being removably attached to a multicomponent dispensing appliance. The result is a more homogeneous spray action, on one hand, and an easy replacement of the head, on the other hand.