Dispenser for Thick Fluent Material with Segmented Pneumatic Control
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Solution Overview
Problem
Existing dispensers struggle to achieve fine control and even distribution of thick, viscous materials like stucco, which are difficult to propel and disperse effectively, limiting their application in achieving a thin, uniform coating.
Innovation Solution
A dispenser with a fluid circuit and pressure circuit that uses compressed air to propel and disperse thick fluent materials, featuring a hopper for gravity-fed material and adjustable valves to control discharge and dispersion, allowing for independent adjustment of propulsion and dispersion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If pneumatic equipment is used to dispense thick fluent materials like stucco, then the material can be propelled from the dispenser, but achieving fine control and even dispersion of the material becomes difficult
Solution Approach 1:
The pneumatic control system is segmented into two independent circuits: a first subcircuit controlling propulsion with a first valve, and a second subcircuit controlling dispersion with a second valve. This segmentation allows independent adjustment of material flow rate and dispersion degree, enabling both effective discharge of thick materials and fine control over coating uniformity.
Solution Approach 2:
The system employs dynamically adjustable valves that can be independently controlled during operation. The first valve dynamically regulates the rate of material discharge, while the second valve dynamically adjusts the dispersion characteristics. This dynamic control enables adaptation to different material viscosities and desired coating thicknesses, achieving both productivity and manufacturing precision.
2Force
If compressed air is used to propel thick material, then the material can be discharged effectively, but controlling the rate of discharge and dispersion becomes difficult
Solution Approach 1:
A first control valve is introduced as an intermediary between the compressed air source and the material flow in the first subcircuit. This intermediary device modulates the compressed air pressure and flow rate, providing fine control over the propulsion force applied to thick materials. The valve translates full compressed air pressure into precisely controlled material discharge rates, making the system easy to operate while maintaining effective propulsion capability.
3Device complexity
If the dispenser uses a simple single-circuit design, then the device complexity is reduced, but the ability to independently control discharge and dispersion is lost
Solution Approach 1:
The pneumatic circuit is divided into two separate subcircuits with independent valves. The first subcircuit handles propulsion control while the second subcircuit handles dispersion control. This segmentation increases adaptability and versatility, allowing independent adjustment of discharge rate and dispersion degree to suit different material properties and application requirements, while maintaining a relatively simple overall device structure.
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
Enables precise control over the application of thick materials, ensuring a uniform and even coating without the need for secondary working, such as using a trowel, and can handle materials ranging from stucco to less viscous substances like paint.
Implementation Method 1
a pressure circuit for propelling and dispersing the thick fluent material... Compressed air impinges on the fluid circuit near the discharge nozzle
Implementation Method 2
Compressed air impinges on the fluid circuit near the discharge nozzle from a ring shaped chamber surrounding the fluid circuit
Implementation Method 3
Thick fluent material is stored in a hopper and fed by gravity into the fluid circuit
Data Source
AI summary
A dispenser for dispensing a fluent material, including a structural body including a fluid circuit for the thick fluent material and a pressure circuit for propelling and dispersing the thick fluent material. Thick fluent material is stored in a hopper and fed by gravity into the fluid circuit. The pressure circuit carrying for example compressed air branches into a first subcircuit arranged to propel thick fluent material towards the discharge nozzle, and a second subcircuit arranged to disperse the thick fluent material as it exists the discharge nozzle. First and second valves respectively control flow of pressurized air in the first and second subcircuits to independently adjust the rate of discharge and dispersion of the thick fluent material.