Interchangeable Backwire Sieve with Dynamic Cleaner
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Solution Overview
Problem
Existing plansifters face challenges with stack height constraints, incompatibility between backwire and combined sieves, and inefficient cleaning due to uneven surfaces and preferential paths of cleaners, leading to issues with compressive sealing, product throughput, and maintenance.
Innovation Solution
A sieve design that is interchangeable between backwire and combined configurations, featuring a dynamic combined cleaner with a body, projection, and cleaning heads, along with discrete weight elements that dynamically change the center of gravity, providing effective cleaning and expelling capabilities without altering the sieve's height or reducing the sieving surface area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a backwire grille is added to create a backwire sieve, then cleaning effectiveness is improved, but the sieve height increases and incompatibility with combined sieve configurations occurs
Solution Approach 1:
The patent applies dynamics by making the backwire grille removable and interchangeable, allowing the sieve to dynamically change configuration between backwire and combined types. The frame includes notches that accept the backwire grille, but the grille can be removed to convert to a combined sieve configuration, enabling adaptive adjustment based on operational needs without permanent structural commitment.
Solution Approach 2:
The patent achieves universality by designing a single sieve frame that can accommodate both backwire and combined sieve configurations. The frame structure with notches allows it to universally accept either a backwire grille for enhanced cleaning or operate without it for combined sieve mode, making one component serve multiple functional purposes and eliminating the need for separate dedicated frames.
2Reliability
If the sieve height is increased to accommodate backwire configuration, then cleaning capability is improved, but stack height constraints are violated and compressive sealing is compromised
Solution Approach 1:
The patent uses dynamics by enabling the sieve to switch between configurations with different height profiles. The backwire grille can be installed when enhanced cleaning is needed and removed when stack height constraints are critical, allowing the system to dynamically adapt to varying operational requirements without permanent structural compromise.
Solution Approach 2:
The patent applies parameter changes by modifying the effective height parameter of the sieve through the optional backwire grille. When the grille is installed, the cleaning surface height increases for better cleaning; when removed, the height parameter decreases to satisfy stack constraints. This reversible parameter adjustment resolves the contradiction between cleaning capability and stack compatibility.
3Reliability
If separate backwire grille and frame are used, then cleaning zones are defined, but device complexity increases and maintenance difficulty arises
Solution Approach 1:
The patent applies segmentation by dividing the sieve into modular components: the frame, the backwire grille, and the sieve cloth. The frame contains notches that segment the structure to accept the grille, creating defined cleaning zones. This segmentation allows individual components to be independently maintained or replaced, actually simplifying maintenance compared to integrated designs.
Solution Approach 2:
The patent achieves universality by designing the frame with standardized notches that universally accept the backwire grille. This universal interface simplifies maintenance by allowing the grille to be easily removed, cleaned, or replaced without specialized tools or procedures, reducing maintenance complexity despite the segmented structure.
4Length of stationary object
If combined sieve configuration is used, then stack height is reduced, but cleaning effectiveness decreases due to uneven surfaces and preferential paths
Solution Approach 1:
The patent applies dynamics by allowing the sieve to switch between combined and backwire configurations. When cleaning effectiveness is prioritized, the backwire grille is installed to provide the uneven surface needed for effective cleaning. When stack height is the priority, the grille is removed and the sieve operates in combined mode, enabling dynamic optimization based on operational priorities.
Solution Approach 2:
The patent uses parameter changes by adjusting the surface uniformity parameter through the optional backwire grille. The grille creates an uneven surface parameter that enhances cleaning effectiveness, while its removal creates a uniform surface suitable for combined sieve operation. This reversible parameter change allows optimization of cleaning effectiveness without permanent structural modification.
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 allows for flexible configuration, improved cleaning coverage, and reliable throughput expulsion, avoiding choke and clumping, while maintaining consistent sieving performance and ease of maintenance by ensuring consistent contact with the sieve cloth and dynamic movement.
Implementation Method 1
one or more weight elements housed within the body and configured to dynamically change a center of gravity of the dynamic combined cleaner during use within the sieve
Implementation Method 2
The cleaner includes a body having a first side configured to face a sieve cloth of the sieve and a second side configured to face a bottom sheet of the sieve
Data Source
AI summary
A sieve is disclosed for use in a plansifter. The sieve can be changed between backwire and combined sieve configurations without the height of the sieve changing, and while maintaining contact between a frame of the sieve and the sieve box. A dynamic combined cleaner also is disclosed in which the center of gravity of the cleaner dynamically changes based on inertial movements applied to the cleaner.