Filter Insert Connecting Plate Sealing Design
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Solution Overview
Problem
Existing filter inserts with multiple filter bags face challenges in achieving reliable and efficient sealing between filter bags, leading to complex and costly sealing processes, which compromise the leak-tightness of the filtrate collecting space.
Innovation Solution
A connecting plate with longitudinal webs bridges the frames of adjacent filter bags, providing a large sealing area and enhanced stability through two-dimensional welding, and the use of a circumferential groove and lip for alignment and sealing with the filtrate collecting chamber.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cast resin is used to seal filter bags together, then the filter bags are sealed one against the other, but the sealing process becomes rather complex and requires hardening time
Solution Approach 1:
The invention extracts the sealing function from the filter bag assembly process by introducing a separate connecting plate with integrated sealing elements. The connecting plate is pre-formed with sealing surfaces that mate with the filter bag frames, separating the sealing operation from the assembly operation and enabling simpler, faster connection.
Solution Approach 2:
The connecting plate is pre-prepared with sealing surfaces and geometric features before assembly. The sealing interfaces are pre-formed on the connecting plate, allowing filter bags to be quickly connected without requiring complex sealing operations during assembly, thus reducing both complexity and time.
2Reliability
If heating wire is inserted between frames to weld filter bags, then the frames are welded together, but the sealing effort becomes huge and the heating wire remains in the filter insert
Solution Approach 1:
The connecting plate uses a disposable sealing mechanism where the sealing surfaces are consumed in the sealing process. The sealing elements on the connecting plate are designed to be used once, eliminating the need for reusable heating wires and complex welding equipment while maintaining reliable seals.
Solution Approach 2:
The invention replaces the thermal welding process (heating wire) with a mechanical sealing system. The connecting plate uses geometric interlocking and friction-based sealing surfaces to join filter bags, eliminating the need for heating wires, welders, and the associated complexity of thermal joining processes.
3Volume of stationary object
If multiple filter bags are arranged to create a large filtrate collecting space, then the filtrate collecting space has a multitude of sealing points, but achieving reliable sealing at all points becomes increasingly difficult
Solution Approach 1:
The connecting plate serves multiple functions simultaneously: it connects multiple filter bags, provides sealing surfaces for all connections, structurally supports the filtrate collecting space, and distributes mechanical loads. This multi-functionality allows large-scale configurations to maintain reliable sealing without proportionally increasing sealing complexity.
Solution Approach 2:
The connecting plate is segmented into multiple sealing zones, each with its own sealing surface for connecting individual filter bags. This segmentation allows each sealing point to be independently optimized and sealed, ensuring reliable sealing at each location while accommodating multiple filter bags in a modular fashion.
4Ease of manufacture
If filter bags are sealed with minimal effort, then the sealing process is simplified, but the leak tightness of the filtrate collecting space may be compromised
Solution Approach 1:
The connecting plate uses geometric parameters and surface characteristics to enhance sealing reliability. The sealing surfaces have specific geometric features (flat surfaces, recesses, protrusions) that create mechanical interference and increase contact area, providing reliable seals through geometric design rather than complex sealing processes.
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 ensures a reliable, leak-tight seal with minimal effort and high stability, allowing for efficient production and visual verification of channel accessibility, while absorbing mechanical forces and maintaining liquid tightness.
Implementation Method 1
the surface of the interconnected frames which is to face the connecting plate and the connecting plate itself are each partially melted by means of a welding mirror
Data Source
AI summary
The invention relates to a filter insert with a filtrate collecting chamber (4) which is connected to several filter bags (1) via a connecting plate (3). The connecting plate (3) includes longitudinal webs (5) for bridging joints (6) between the frames (14) of individual filter bags (1). The connecting plate (3) is sealingly welded to the filter bags (1) and the filtrate collecting chamber (4).