Reinforced Top Cover for Chemical Filter Resists Pressure
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Solution Overview
Problem
Conventional chemical filters with plastic top covers are prone to deformation and damage under high pressure, which can lead to bursting.
Innovation Solution
A reinforced top cover structure comprising a metal core board, positioning pillars, and an injection molded plastic cover member, which provides enhanced structural strength and resistance to internal pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a single-layer plastic top cover is used, then the ease of manufacture is improved, but the strength and resistance to high pressure deteriorate
Solution Approach 1:
The top cover is constructed as a composite structure combining a metal core board with plastic cover members on both sides. The metal core board provides the necessary strength and rigidity to resist high internal pressure, while the plastic cover members provide corrosion resistance and ease of manufacture. This composite approach resolves the contradiction by integrating materials with complementary properties.
Solution Approach 2:
The top cover is divided into multiple functional layers: a first plastic cover member, a metal core board, and a second plastic cover member. Each layer serves a specific function - the plastic layers provide chemical resistance and ease of manufacturing, while the metal core provides structural strength. This segmentation allows optimization of each component for its specific purpose.
2Strength
If the top cover thickness is increased to resist high pressure, then the strength is improved, but the device complexity and weight increase
Solution Approach 1:
Instead of increasing the thickness of a single plastic layer, the invention uses a composite structure with a thin metal core board sandwiched between two plastic cover members. This approach achieves high strength without requiring excessive thickness, as the metal core provides structural rigidity while the plastic layers remain relatively thin for chemical resistance.
Solution Approach 2:
The metal core board is positioned specifically at the center of the top cover where structural support is most needed to resist internal pressure. This localized placement of high-strength material optimizes the overall structure, providing maximum strength where required while keeping other areas lighter and simpler.
3Strength
If reinforcing ribs are added to the plastic top cover, then the strength is improved, but the ease of manufacture and structural simplicity deteriorate
Solution Approach 1:
The invention replaces the need for complex reinforcing ribs by using a metal core board with inherent high stiffness and strength-to-weight ratio. The metal core naturally provides structural reinforcement without requiring additional plastic ribs, thereby simplifying the manufacturing process while maintaining or improving strength.
Solution Approach 2:
The reinforcing function is extracted from the plastic material itself and transferred to a separate metal core board component. This separation allows the plastic cover members to remain simple and easy to manufacture, while the metal core independently provides the necessary structural reinforcement.
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 reinforced top cover structure effectively prevents deformation and bursting by distributing pressure evenly and providing a stable anchoring effect between the metal core and plastic cover.
Implementation Method 1
distributing pressure evenly
Implementation Method 2
providing a stable anchoring effect between the metal core and plastic cover
Data Source
AI summary
A reinforced top cover structure for a chemical filter includes a cover member made of injection molded plastic material and covering a metal-made core board mounted with multiple positioning pillars. Each positioning pillar has an upper section extending upwardly from a top surface of the core board, a middle section connected to the upper section and extending through a corresponding one of multiple positioning holes in the core board, and a lower positioning part connected to the middle section and extending downwardly from the bottom surface of the core board. The core board has an annular peripheral surface formed with multiple notches. The cover member has an outer peripheral surface surrounding the annular peripheral surface of the core board and formed with multiple engaging grooves that correspond respectively to the notches in position.