Fluid Intake Assembly With Duckbill Valve For Remote Sprayer
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Solution Overview
Problem
Fluid intake assemblies in remote paint containers often experience backflow of fluid when the pump mechanism slows or stops, leading to air being drawn into the system, causing sputtering and uneven spray patterns due to the length of the inlet tube.
Innovation Solution
A dual tube connection assembly with a valve mechanism is introduced to control fluid flow, allowing fluid to flow from the remote container to the sprayer while preventing backflow and air ingress by using a duckbill valve to restrict fluid flow in the opposite direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a long inlet tube is used to connect the remote fluid container to the sprayer, then the user can move about the work site freely, but fluid backflow occurs when the pump slows or stops, causing air ingress and sputtering
Solution Approach 1:
A check valve is introduced as an intermediary component in the fluid path between the remote container and sprayer. The check valve allows fluid to flow in the forward direction from the container to the sprayer but automatically closes to prevent backflow when the pump stops or slows, thereby eliminating air ingress and sputtering while maintaining user mobility with long tubing.
2Adaptability or versatility
If the pump mechanism stops or slows during operation, then the spraying process can be paused, but fluid backflow occurs through the inlet tube, drawing air into the system
Solution Approach 1:
The check valve serves as a protective intermediary that automatically activates when the pump stops or slows. It blocks the fluid path in the reverse direction, preventing air from being drawn back through the inlet tube into the system, thus allowing operators to pause spraying without causing air ingress.
3Device complexity
If a simple inlet tube connection is used, then the device complexity is low, but the spray pattern becomes uneven due to backflow and air mixing
Solution Approach 1:
A check valve is incorporated into the connection assembly at minimal cost and complexity. This simple mechanical component ensures uniform spray pattern by preventing backflow and air mixing, maintaining fluid purity in the inlet tube without requiring complex control systems or multiple components.
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
This solution ensures consistent and smooth fluid delivery by preventing air from entering the system, maintaining a stable spray pattern and reducing sputtering issues during operation.
Implementation Method 1
a valve mechanism configured to allow a flow of fluid through the inlet fluid path in a first direction and restrict a flow of fluid through the inlet path in a second, opposite direction
Data Source
AI summary
The present disclosure generally relates to fluid spraying devices and systems and more specifically, but not by limitation, to a fluid intake assembly configured to be used with a remote fluid source to supply fluid material from the remote fluid source to a fluid sprayer. In one example, a fluid intake assembly for a fluid sprayer is provided. The assembly includes an inlet tube providing at least a portion of a fluid path between a remote fluid source and the fluid sprayer. The assembly also includes a fluid flow control mechanism configured to allow a flow of fluid material in the fluid path in a first direction and restrict a flow of fluid material in the fluid path in a second, opposite direction. In one example, the fluid flow control mechanism comprises a valve mechanism.