Hand-Held Dispenser With Slide Valve For Flow Rate Control
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Solution Overview
Problem
Existing hand-held dispensers lack precise control over the flow rate of water and liquid chemicals, making it difficult to achieve optimal mixing ratios for applications such as lawn spraying and mop bucket filling.
Innovation Solution
A hand-held dispenser with a T-shaped configuration featuring a horizontally disposed first body portion and a vertically disposed second body portion, including a valve system and a slide valve mechanism that allows for precise control of water and chemical flow rates through rotatable selector knobs and movable slide valves, enabling easy adjustment of flow ratios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a simple valve system is used in existing hand-held dispensers, then the device complexity is reduced, but the flow rate control precision of water and liquid chemicals deteriorates
Solution Approach 1:
The dispenser is divided into separate functional modules: a water flow control system with a first valve and passageway, and a chemical flow control system with a second valve and passageway. Each valve is independently controlled, allowing precise separate adjustment of water and chemical flow rates to achieve accurate mixing ratios without requiring a single complex valve mechanism.
Solution Approach 2:
The patent employs adjustable and movable valve mechanisms that can be dynamically positioned to control flow rates. The valves are designed to be manually adjustable, enabling users to change the mixing ratio on-the-fly by moving the valve positions, thus providing dynamic flow rate control precision without permanent complex instrumentation.
2Adaptability or versatility
If fixed mixing ratios are used in existing dispensers, then the device complexity is reduced, but the adaptability to different applications deteriorates
Solution Approach 1:
The dispenser features dynamically adjustable valve mechanisms that allow users to change the mixing ratio between water and liquid chemicals according to different application requirements. The valves can be moved to different positions to achieve variable flow rates, providing adaptability without requiring multiple fixed-ratio dispensers.
Solution Approach 2:
The dual-valve system with independent water and chemical flow control creates a universal dispenser that can handle multiple applications and mixing ratios. This single device can be adapted for lawn spraying, mop bucket filling, and other applications by simply adjusting the valve positions, eliminating the need for application-specific dispensers.
3Measurement precision
If manual flow control is used in existing dispensers, then the ease of operation is reduced, but the flow rate control precision deteriorates
Solution Approach 1:
The control system is segmented into two independent valve controls, each managing one fluid stream. This segmentation allows users to control water and chemical flows separately with simple manual adjustments, achieving precise flow rate control without requiring complex automated systems or difficult-to-operate mechanisms.
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 dispenser provides precise and convenient control over water and chemical flow rates, allowing for accurate mixing ratios to be achieved, enhancing usability and efficiency in applications like lawn care and cleaning.
Implementation Method 1
The valve member of the first valve means closes the valve seat when the first valve means is in its upper position.
Implementation Method 2
The discharge end of the first passageway is positioned below the lower inlet end of the valve seat so that the water under pressure in the first passageway exerts pressure against the lower end of the valve member of the first valve means when the first valve means is in its upper position to assist in maintaining the first valve means in its upper position.
Implementation Method 3
A slide valve mechanism that allows for precise control of water and chemical flow rates through rotatable selector knobs and movable slide valves
Data Source
AI summary
A hand-held dispenser for precisely controlling the flow rate of water therethrough and for injecting a liquid chemical into the water passing through the dispenser. The dispenser includes a slide valve for changing the flow rate of the liquid chemical water therethrough. The slide valve may also be positioned so that only rinse water is discharged from the dispenser.