Double-Belt Press Sealing With Fluid Jets to Suppress Leakage
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Solution Overview
Problem
In continuous pressure devices, movement of the conveyor belt can create gaps between sealing members and the belt, leading to fluid leakage. Using multiple sealing members to suppress leakage increases the number of parts and device size.
Innovation Solution
A double-belt press with a sealer system that includes inner and outer seals, each with a flow passage and a deformable member to bias the seals towards the belts, ensuring effective sealing and minimizing fluid leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sealing member is pressed against the conveyor belt to prevent fluid leakage, then sealing effectiveness is improved, but movement of the conveyor belt creates gaps between the sealing member and the belt leading to fluid leakage
Solution Approach 1:
The patent introduces a fluidized layer using sealing fluid between the sliding member and conveyor belt. The sealing fluid is supplied to form a pressurized fluid layer that maintains contact between the sealing member and belt, preventing gaps from forming during belt movement. This hydraulic approach replaces direct mechanical pressing with fluid-mediated sealing.
Solution Approach 2:
The patent changes the physical state and pressure parameters of the sealing fluid to optimize sealing performance. By controlling the pressure and flow rate of the sealing fluid, the system adapts to belt movement while maintaining effective sealing. The fluid pressure dynamically adjusts to compensate for gap formation.
2Reliability
If multiple sealing members are used to suppress fluid leakage, then sealing reliability is improved, but the number of parts increases and device size increases
Solution Approach 1:
The patent uses a single sealing member enhanced with a fluidized layer approach instead of multiple sealing members. The sealing fluid creates multiple contact points and pressure zones within the single sealing structure, achieving equivalent or superior sealing reliability without increasing part count.
Solution Approach 2:
The sealing function is segmented into multiple fluid supply zones and pressure regions within a single sealing member structure. The sealing fluid is distributed through multiple channels and jets to create localized sealing zones, effectively replacing the need for multiple physical sealing members.
3Reliability
If multiple sealing members are used to suppress fluid leakage, then sealing reliability is improved, but device size increases
Solution Approach 1:
The sealing fluid supply system is integrated within the pressurizing chamber structure. The fluid channels, supply passages, and sealing mechanisms are nested within the existing device geometry, minimizing additional space requirements while achieving improved sealing reliability.
Solution Approach 2:
The sealing fluid system serves multiple functions simultaneously: it creates the sealing layer, compensates for belt movement, and adapts to varying operational conditions. This multi-functionality eliminates the need for separate components for each sealing function, reducing overall device size.
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 described solution effectively suppresses leakage of pressurizing fluid by forming sealing fluid layers between the seals and the belts, reducing the need for multiple sealing members and maintaining device compactness.
Implementation Method 1
a sealing fluid is caused to flow out of a recess formed in a surface of the sliding member, the surface facing the conveyor belt, to form a fluidized layer of the sealing fluid between the sliding member and the conveyor belt
Implementation Method 2
the sealing fluid taken in via the intake port jets out via the jet port toward belts
Implementation Method 3
A deformable member for inner seal that is able to deform may be disposed between a bottom surface of the inner sealing groove and the inner seal
Data Source
AI summary
In a double-belt press, an inner seal has an inner seal flow passage having an intake port via which a sealing fluid supplied into an inner sealing groove is taken in and a jet port via which the sealing fluid taken in via the intake port jets toward belts. The outer seal has an outer seal flow passage having an intake port via which the sealing fluid supplied into an outer sealing groove is taken in and a jet port via which the sealing fluid taken in via the intake port jets toward the belts. The partition wall has a plurality of fluid supply passages that supply each of the inner sealing groove and the outer sealing groove with the sealing fluid and a plurality of fluid recovery passages that recover the sealing fluid accumulating in the space formed between the inner seal and the outer seal.