Movable Grate Dredge Head for Blockage Clearance
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Solution Overview
Problem
Existing sediment removal systems in water bodies face issues with unwanted materials like stones and rocks damaging equipment and previous filter mechanisms being inadequate in preventing blockages without requiring the pump to be de-energized.
Innovation Solution
The development of dredge heads with movable members, such as graters, that can selectively extend across the opening to clear blockages without de-energizing the pump, allowing for efficient sediment removal while preventing damage from larger debris.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If fixed bars or screens are used as filter mechanisms, then larger stones and rocks are prevented from entering the pump, but the filter plugs with particles and objects requiring manual removal and pump de-energization
Solution Approach 1:
The patent applies a movable bar mechanism that can dynamically adjust its position between a horizontal filtering position and a vertical clearance position. The bar is movable relative to the suction head, allowing it to transition from blocking the suction opening to being removed from the opening, enabling automatic clearance of accumulated particles without manual intervention or pump shutdown.
2Object-affected harmful factors
If a hinged bar is used to cover the opening, then some protection is provided, but the bar travels only a short distance and particles can still roll or slide off the bar into the vacuum path
Solution Approach 1:
The patent employs a movable bar that can be positioned in a horizontal orientation to span the suction opening for filtering, or rotated to a vertical orientation to be removed from the opening for clearance. This dynamic repositioning ensures complete protection when needed and complete clearance when blockages occur, eliminating the shortcomings of fixed or short-travel hinged bars.
3Ease of operation
If the bar connection is made loose to allow movement, then the bar can clear blockages, but the bar easily flops, droops, sags, and displaces from the desired location
Solution Approach 1:
The patent implements a movable bar with a controlled degree of freedom that can be rotated between horizontal and vertical positions. The bar is movable relative to the suction head through a controlled mechanism that provides stability in the horizontal filtering position while enabling intentional movement to the vertical clearance position for blockage removal, preventing unwanted displacement.
4Object-affected harmful factors
If the bar extends across the opening to provide filtering, then debris is blocked, but the effective size of the opening remains close to the original when the bar is displaced
Solution Approach 1:
The patent uses a movable bar that can be rotated from a horizontal position spanning the suction opening to a vertical position removed from the opening. This dynamic repositioning completely changes the effective opening size from a reduced filtered opening to the full original opening size, providing maximum adaptability for both filtering and clearance operations.
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
Enables effective clearance of blockages without manual intervention, maintaining system efficiency and safety by allowing continuous operation while protecting equipment from damage.
Implementation Method 1
the suction head is placed close enough to the sediment that the vacuum or suction force of the system draws the sediment into the and through the suction/dredge head, and into and through the connecting lines of hose
Data Source
AI summary
Dredge heads, for use with a dredging system, include one or more movable members, e.g. grate members, adapted and configured to selectively extend across the opening of the dredge head. The movable member(s) enables a user to clear the dredge head of plugging masses or blockages without having to de-energize the dredge system pump. Also, the movable member(s) enable a user to clear the dredge head of plugging masses or blockages without requiring the user to manually, by using his or her hand, withdraw the plugging masses or blockages from the opening of the suction/dredge heads.