Reversible Drum Washing Device for Pipe Surface Scratch Prevention
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Solution Overview
Problem
Existing washing machines for cleaning long profile sections, particularly pipes, often scratch the outer surfaces due to inadequate diameter adjustment and handling, leading to damage during the washing process.
Innovation Solution
A washing device with an adjustable cover and transport path that allows pipes to roll instead of slide, preventing scratches by adjusting the opening width of the dispensing opening to match the pipe diameter and using a reversible drum for upper and lower transport paths, ensuring gentle handling of pipes of varying diameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If pipes are transported along the lower transport path below the drum's axis of rotation, then the washing process can be simplified, but the pipes slide and become scratched on the outer surface
Solution Approach 1:
The patent inverts the conventional lower transport path to an upper transport path above the drum's axis of rotation. This inversion changes the gravitational force direction acting on the pipes, causing them to roll instead of slide within the receptacles, thereby preventing surface scratches while maintaining washing effectiveness
Solution Approach 2:
The patent changes the transport path parameter from below to above the drum's axis of rotation. This parameter change fundamentally alters the motion mode of pipes from sliding to rolling, eliminating the harmful scratching effect while preserving the washing function
2Device complexity
If the opening width of the dispensing opening is fixed, then the device structure is simplified, but pipes of different diameters cannot be accommodated and may fall out too early
Solution Approach 1:
The patent introduces an adjustable opening width mechanism that allows the dispensing opening to be dynamically adapted to different pipe diameters. This dynamic adjustment capability enables the device to accommodate various pipe sizes without falling out too early, while the adjustable nature maintains reasonable structural complexity
Solution Approach 2:
The adjustable opening width mechanism provides universal adaptability for pipes of different diameters. A single device structure can handle multiple pipe sizes by adjusting the opening width, achieving multi-functionality without requiring separate devices for each pipe diameter
3Ease of operation
If pipes are held in fixed positions in the receptacles, then handling is simplified, but small-diameter pipes fall out too early during the washing process
Solution Approach 1:
The patent employs preliminary action by providing adjustable holders that can be pre-configured to match the specific diameter of pipes before the washing process begins. This preliminary adjustment ensures that small-diameter pipes are securely retained throughout the washing process, preventing early dropout while maintaining handling simplicity
Data Source
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AI summary
The invention relates to a washing device for elongated profiled sections (7) which have been cut to length, comprising a drum (5, 6) which can be rotated about a horizontally aligned rotational axis (3, 4) and which comprises a plurality of receiving areas (8, 9) that are arranged adjacently along the circumference of the drum, elongated profiled sections (7) aligned along the longitudinal direction (L) being insertable into said receiving areas, and comprising a receiving opening (11) for the elongated profiled sections (7), a discharge opening (12) for the elongated profiled sections (7), and an upper transport path (To) for the elongated profiled sections (7), said transport path running between the receiving opening (11) and the discharge opening (12). The upper transport path (To) passes the rotational axis (3, 4) on the transport path side facing away from the ground, and an opening width of the discharge opening (12) can be adjusted in the circumferential direction.