Fluid Dispensing Valve Segmentation for Contamination Control
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Solution Overview
Problem
Existing fluid dispenser devices for varnishes and dyes face contamination issues due to fluid recirculation, leading to reduced valve durability and complex installation and maintenance, especially with numerous valves requiring extensive cable and duct management.
Innovation Solution
A fluid recirculation and dispenser valve unit with a membrane sealing gasket isolating actuation and recirculation portions, and a modular dispenser head design allowing independent valve unit attachment, reducing contamination and simplifying maintenance by separating actuation and fluid connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If fluid recirculation is implemented in dispenser valves, then fluid preservation is improved, but actuation components become contaminated reducing valve durability
Solution Approach 1:
The valve body is divided into two separate portions: a first portion housing actuation components and a second portion housing recirculation components. This segmentation prevents fluid from the recirculation duct from contacting actuation components, eliminating contamination while maintaining fluid preservation benefits.
Solution Approach 2:
The recirculation duct and its associated fluid path are extracted and isolated from the actuation portion of the valve. By separating the recirculation fluid path from the actuation components, the harmful contamination effect is eliminated while the useful fluid preservation function is maintained.
2Adaptability or versatility
If multiple valves are installed in dispenser stations, then dispensing capability is improved, but installation and maintenance time increases
Solution Approach 1:
Each valve is segmented into modular portions that can be independently assembled and replaced. The valve body portions are designed as separate units that can be quickly installed and removed, significantly reducing installation and maintenance time for multi-valve dispenser stations.
Solution Approach 2:
Instead of designing valves as integrated units requiring complete assembly/disassembly, the invention inverts the approach by creating separable valve portions that can be independently manipulated. This allows maintenance personnel to work on individual valve components without affecting other valves in the station.
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
Prevents fluid contamination of actuation components, extends valve life, and simplifies installation and maintenance by allowing rapid replacement of individual valve units, reducing installation time and complexity.
Implementation Method 1
a membrane sealing gasket (20) integral with the valve rod (18) and suitable for preventing any type of contamination of the proximal actuation portion (12) of the valve body (10) by the fluid to be dispensed
Data Source
AI summary
A fluid recirculation and dispenser valve unit of a fluid comprises a fluid recirculation and dispenser valve and a cartridge in which an axial valve seat is made which at least partially houses said valve. Said valve comprises a valve body and a valve rod which extends partially in said valve body and which is axially movable between a closed rearward position of the valve and an open forward position of the valve. The axial valve seat comprises a proximal recirculation portion, which communicates fluidically with a recirculation duct, and a distal dispenser portion in fluidic communication with a dispenser duct.