Screening Device Bar Holder Wedging Without Welding
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Solution Overview
Problem
Conventional screening devices for centrifugal and centripetal operations face stability issues due to welding failures, leading to breakage, especially at the ferrule connection points, limiting their application range and durability.
Innovation Solution
A method involving the use of strip-like bar holders with open recesses, where profiled bars are wedged by bending, eliminating the need for welding and enhancing strength through offset wedging, allowing for greater versatility and durability without welding or adhesive bonding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If welding is used to connect profiled bars to bar holders, then initial structural integrity is achieved, but reliability deteriorates due to welding failures and breakage at ferrule connection points
Solution Approach 1:
The patent extracts and eliminates the welding process from the construction method. Instead of welding profiled bars to bar holders, the invention uses a mechanical insertion system where profiled bars are inserted into recesses of bar holders and secured through friction and geometric interlocking, completely removing the unreliable welding step while maintaining structural integrity
Solution Approach 2:
The patent replaces the welding mechanical system (thermal joining process) with a mechanical insertion and friction-based securing system. The profiled bars are inserted into recesses and held in place by friction forces and geometric interlocking, substituting the welding process with a purely mechanical attachment method that avoids heat-affected zones and welding defects
2Ease of manufacture
If conventional welding methods are used, then manufacturing process is simple, but device complexity increases due to additional quality control and repair requirements
Solution Approach 1:
The patent employs bar holders with recesses that are designed as simple, replaceable components. If a bar holder becomes worn or damaged, it can be easily removed and replaced without affecting the entire screening device structure, simplifying maintenance and reducing the need for complex repair procedures
Solution Approach 2:
The patent segments the screening device into modular components: bar holders with recesses, profiled bars, and ferrules. This segmentation allows each component to be manufactured independently using simple processes and facilitates easy assembly, disassembly, and replacement, reducing overall device complexity while maintaining manufacturing simplicity
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 method produces screening devices with increased strength and durability, reducing the risk of breakage at welding areas and enabling wider application ranges without the limitations of conventional welding-related failures.
Implementation Method 1
Rings are produced from the first bar holders that are fitted with the profiled bars by bending, due to the bending the profile bars are wedged into the narrowing recesses
Data Source
AI summary
A method for producing a screening device, the method comprising the steps of providing a screening device that includes a plurality of profiled bars and a plurality of bar holder packages associated with the plurality of profiled bars. The plurality of bar holder packages include a plurality of first bar holders and at least one additional bar holder associated with the plurality of first bar holders. The method including the further steps of inserting the plurality of profiled bars parallel to one another into the plurality of bar holder packages, and bending the plurality of bar holder packages such that the plurality of first bar holders and the at least one additional bar holder are bent at the same time.