Vertical Pressure Filter Sealing with Dual-Ridge Seal Geometry
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Solution Overview
Problem
Elongated sealing members in vertical pressure filters have a limited service-life due to uneven distribution of deformation and pressing forces, leading to reduced sealing effectiveness and increased shear stress.
Innovation Solution
Incorporating two ridge portions on the elongated sealing member, which are designed to distribute forces more evenly and press against the filter fabric belt, promoting better adhesion and reducing shear stress, thereby extending the service-life and enhancing sealing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If a single ridge portion is used on the elongated sealing member, then the structure is simpler, but the service-life is reduced due to uneven force distribution
Solution Approach 1:
The elongated sealing member is segmented into multiple ridge portions (at least two) instead of using a single ridge. This segmentation distributes the deformation and pressing forces across multiple contact points, preventing localized stress concentration and extending the service-life of the sealing member while maintaining reasonable structural complexity.
2Reliability
If a single ridge portion is used on the elongated sealing member, then the structure is simpler, but the sealing effectiveness is reduced due to uneven deformation
Solution Approach 1:
The sealing member is divided into multiple ridge portions that distribute pressing force more evenly across the filter fabric belt, improving sealing effectiveness by preventing localized deformation and maintaining consistent contact pressure along the sealing interface.
Solution Approach 2:
Each ridge portion is designed to create localized high-pressure zones at specific mounting surface areas, while the regions between ridges experience lower pressure. This localized quality variation ensures optimal adhesive bonding at critical points while maintaining overall sealing effectiveness.
3Productivity
If a single ridge portion is used on the elongated sealing member, then the device is simpler, but shear stress is increased reducing performance
Solution Approach 1:
By segmenting the sealing member into multiple ridge portions, the shear force in the lateral direction is distributed across multiple smaller contact zones rather than concentrated in a single zone. This reduces the shear stress on any individual ridge portion, preventing premature failure and maintaining filter 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
The use of two ridge portions on the elongated sealing member results in a more even distribution of forces, extending the service-life and improving sealing effectiveness by promoting even deformation and reducing shear stress, thus enhancing the overall performance of the vertical pressure filter.
Implementation Method 1
attaching the mounting surface of the elongated sealing member to a bottom in a circumferential groove by means of an adhesive that is provided between the mounting surface of the elongated sealing member and the bottom of the circumferential groove
Implementation Method 2
Two ridge portions distribute force more even than one ridge portion. This extends the service-life of the elongated sealing member. Two ridge portions distribute deformation force more even than one ridge portion, whereby the elongated sealing member is more evenly deformed.
Data Source
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AI summary
Described is method for sealing a vertical pressure filter (1), a vertical pressure filter (1) and an elongated sealing member for use in the method and in the vertical pressure filter (1). An elongated sealing member (10) that is used in the method and in the vertical pressure filter (1) comprising a first ridge potion (14) and at least one second ridge portion (18) that extends side by side with the first ridge portion (14).