Tipless Can Filling Valve Dynamics and Segmentation
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Solution Overview
Problem
Existing automatic beverage filling machines face issues with accurate and high-speed filling due to frictional engagement of liquid seals, non-replaceable seal components, inefficient liquid direction, foaming, and size compatibility, leading to delays and product loss.
Innovation Solution
A filling valve with a chamber, nozzle assembly, and vent tube system that includes a valve body, nozzle, and actuating assembly with a cam mechanism to control the flow of pressurizing gas and liquid, allowing for adjustable flow rates and seal expansion to prevent foaming and ensure accurate filling across different container sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a liquid seal with a wedge-shaped sealing surface is used in known valves, then sealing is achieved, but the liquid seal becomes frictionally engaged causing hesitation when opening the valve, resulting in a short fill
Solution Approach 1:
The patent applies the dynamics principle by making the sealing member expandable rather than static. The sealing member can dynamically adjust its dimensions - expanding to engage with the container opening for sealing, and contracting to reduce frictional engagement during opening/closing operations. This dynamic adjustment eliminates the hesitation problem while maintaining reliable sealing when engaged.
2Device complexity
If the liquid seal seat is formed integral with the valve body in known valves, then structural simplicity is achieved, but the seal component becomes non-replaceable apart from the entire valve
Solution Approach 1:
The patent applies segmentation by dividing the valve into separable components - the sealing member is made as a distinct, replaceable component rather than being integral with the valve body. This allows the sealing member to be independently removed and replaced without replacing the entire valve assembly, improving maintainability while keeping the overall structure relatively simple.
3Manufacturing precision
If a screen is positioned just beneath the sealing surface to assist in stopping liquid flow upon valve shutoff, then liquid flow control is improved, but the screen position is well above the valve outlet allowing significant liquid to continue dripping after closure
Solution Approach 1:
The patent applies the intermediary principle by introducing a retractable sealing member as an intermediate element between the valve seat and the container opening. This sealing member acts as a mediator that can actively close the sealing surface when the valve shuts, preventing liquid from continuing to drip past the screen position, thereby reducing liquid loss while maintaining precise flow control during operation.
4Productivity
If liquid is directed into the can in a spiral fashion with introduction well below the top of the can in known valves, then filling is achieved, but disruption in the flow of liquid into the container occurs as the fill height increases
Solution Approach 1:
The patent applies dynamics by making the sealing member (and thus the liquid introduction point) movable rather than fixed. As the container fills and rises, the sealing member can dynamically adjust its position to maintain optimal liquid introduction height relative to the container opening. This prevents flow disruption that occurs in fixed-position systems as fill height increases, maintaining both filling speed and flow stability.
5Productivity
If the valve is fully opened to fill the container as quickly as possible, then filling speed is improved, but excessive foaming occurs
Solution Approach 1:
The patent applies partial action by controlling the sealing member engagement to be optimized rather than fully opened. The sealing member can engage partially or to a controlled degree, allowing sufficient filling speed while preventing the excessive opening that causes foaming. This controlled partial engagement maintains productivity while eliminating the harmful foaming effect.
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 solution enables precise and efficient filling with reduced foaming and product loss by controlling the flow rate and pressure, allowing for faster and more accurate filling of various container sizes while maintaining cleanliness and minimizing liquid retention.
Implementation Method 1
an expandable sealing member operably positioned around the peripheral surface without interruption for substantially preventing liquid from flowing into an area about the peripheral surface, and positioned above the outlet for sealably engaging a container, the seal being capable of being expanded by a pressurizing gas
Implementation Method 2
the seal being capable of being expanded by a pressurizing gas
Implementation Method 3
a fluid passageway operatively positioned for communicating pressurizing gas from the vent tube through the at least one aperture in the nozzle for expanding the sealing member
Implementation Method 4
a vent tube positioned vertically above the nozzle, at least one aperture in the nozzle assembly near the sealing member, and a fluid passageway operatively positioned for communicating pressurizing gas from the vent tube through the at least one aperture in the nozzle
Data Source
AI summary
A filling valve is provided for filling containers such as beverage cans. The valve includes a tipless nozzle having ports oriented for directing flow. The nozzle includes a valve seat having a planar sealing surface. A spring actuated vent seal is provided for closing the vent tube. The valve stem may have protrusions for centering the stem in the valve body. The filling valve may have a bell forming a cavity between the bell and the valve body, and an aperture for directing cleaning fluid from within the bell to the cavity. The valve body may have a duct for directing cleaning fluid from the cavity to an outlet.