Pneumatic Float Discharge Valve for Precise Flow and Shut-Off
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Solution Overview
Problem
Existing fluid valve assemblies struggle with precise control over fluid evacuation flowrates and require high activation forces, often failing to adjust to varying fluid levels and back pressures effectively.
Innovation Solution
A discharge valve assembly featuring a moveable float with a suction device and pneumatic actuation, utilizing a vacuum chamber and buoyancy mechanisms to control fluid flow, allowing for low activation forces and precise shut-off at different fluid levels, with adjustable flowrates and automatic closure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional fluid valve assemblies are used, then fluid flow control is achieved, but precise control over fluid evacuation flowrates cannot be achieved and high activation forces are required
Solution Approach 1:
The patent employs pneumatic actuation through a diaphragm chamber that receives pressurized air to actuate the float assembly. This pneumatic mechanism replaces high-force mechanical actuation with low-force pneumatic pressure, enabling precise flowrate control through controlled air pressure rather than high mechanical activation forces.
Solution Approach 2:
The patent controls fluid evacuation flowrates by changing pneumatic pressure parameters. By adjusting the pressure of compressed air supplied to the diaphragm chamber, the system achieves precise control over the float assembly's movement and consequently the fluid flowrate, replacing coarse mechanical control with fine pneumatic parameter adjustment.
2Adaptability or versatility
If conventional valves are used, then basic shut-off function is provided, but adjustment to varying fluid levels and back pressures is ineffective
Solution Approach 1:
The patent incorporates a level sensor that detects fluid levels and provides feedback to the control system. This feedback mechanism enables the pneumatic actuation system to automatically adjust the float assembly's position in response to varying fluid levels, ensuring reliable control adaptability without manual intervention.
Solution Approach 2:
The patent uses a moveable float assembly actuated by pneumatic pressure that can dynamically adjust its position to compensate for varying back pressures and fluid levels. The system transitions from static mechanical valve positioning to dynamic pneumatic control, allowing real-time adaptation to changing operating conditions.
3Ease of operation
If high activation forces are used, then valve operation is achieved, but operation across varying fluid levels becomes inefficient
Solution Approach 1:
The patent replaces high-force mechanical operation with low-force pneumatic actuation. The diaphragm chamber receives compressed air that generates sufficient force to move the float assembly with minimal activation force, improving ease of operation while maintaining efficiency across varying fluid levels through pneumatic pressure control.
Solution Approach 2:
The patent substitutes traditional mechanical actuation mechanisms with a pneumatic actuation system. This replacement eliminates the need for high mechanical activation forces while enabling efficient operation across varying fluid levels through controllable pneumatic pressure, achieving both ease of operation and productivity.
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 fluid evacuation with minimal activation force, adjusting flowrates and ensuring complete shut-off independent of back pressure, while maintaining efficient operation across varying fluid levels.
Implementation Method 1
a float assembly including a moveable float... configured to be buoyed by fluid flowing from the fluid tank
Implementation Method 2
the suction device comprises a suction cup configured to be deformed against an inner surface of the housing forming a vacuum chamber
Implementation Method 3
an actuable diaphragm positioned in the outlet base, and a compressed air tube or passageway coupled to one side the actuable diaphragm. the actuable diaphragm is configured and arranged to be actuated by compressed air to move the moveable piston
Data Source
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AI summary
Some embodiments include a fluid valve assembly with an outlet base dimensioned to be positioned through a drain in a fluid tank, and a float assembly including a moveable float. The moveable float can form a fluid-tight seal at a first end when the moveable float is coupled to the outlet base, and a flow opening when the moveable float is at least partially decoupled from the outlet base. Some embodiments include a housing positioned with the moveable float, where the housing encloses a suction device coupled to a moveable piston. Some embodiments include an actuable diaphragm positioned in the outlet base, and a compressed air tube or passageway coupled to one side the actuable diaphragm. In some embodiments, the actuable diaphragm is configured and arranged to be actuated by compressed air to move the moveable piston.