Hand-Held Dual Flow Dilution Dispenser Linkage Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing hand-held dispensers lack the ability to simultaneously control the flow rate of water and liquid chemicals, requiring individual control of water and chemical spool valves, which can be inconvenient and less precise.
Innovation Solution
A hand-held dual flow dilution dispenser with a linkage connecting the rotatable water flow spool valve and chemical flow spool valve, allowing them to be simultaneously rotated between positions, enabling precise control of chemical mixing with water.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If individual control of water spool valve and chemical spool valve is used, then each valve can be controlled independently, but the operation becomes inconvenient and less precise
Solution Approach 1:
The patent combines the control of water spool valve and chemical spool valve into a single integrated control mechanism. The common spool assembly integrates both valves, allowing simultaneous control through one operating motion, which resolves the contradiction by improving ease of operation while maintaining acceptable device complexity through functional integration
2Measurement precision
If water flow spool valve and chemical flow spool valve are individually controlled, then each flow can be adjusted separately, but the precision of chemical mixing is reduced
Solution Approach 1:
The common spool assembly merges the water and chemical flow control into a single unit where the spool geometry and positioning simultaneously determine both flow rates. This integration ensures precise chemical mixing ratios while maintaining simple operation through a single control mechanism
Solution Approach 2:
The integrated spool design creates an inherent feedback mechanism where the position of the common spool automatically correlates the water and chemical flow rates. As the spool rotates, it simultaneously adjusts both flows in a coordinated manner, ensuring precise mixing ratios without requiring separate control adjustments
Data Source
AI summary
A hand-held dual flow dilution dispenser for precisely controlling the flow rate of water therethrough and for precisely injecting a liquid chemical into the water passing through the apparatus. The dispenser includes a water spool valve and a chemical spool valve with the spool valves being rotated between first and second positions. A handle is operatively connected to the first spool valve for rotating the first spool valve between the first and second positions. A linkage interconnects the handle and the second spool valve whereby rotational movement of the handle simultaneously causes rotation of the first spool valve and the second spool valve.