Double-stream Stripping Device Uniform Suction
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Solution Overview
Problem
Existing vine-stripping machines fail to achieve optimal leaf removal quality due to uneven suction, energy inefficiency, and potential damage to grape bunches, with limitations in reversibility and uniformity of operation.
Innovation Solution
A double-stream stripping device with counter-rotating drums and a dual-air suction system, featuring two main suction openings and a turbine system that generates uniform negative pressure along the entire length of the drum, allowing for effective clamping and removal of leaves, and enabling reversible operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a single turbine suction system is used to remove leaves, then the device structure is simple, but the suction uniformity along the drum length is poor and energy consumption is high
Solution Approach 1:
The single turbine suction system is segmented into two independent suction streams, each serving a specific drum end. This segmentation creates uniform suction distribution along the drum length while maintaining reasonable system complexity through modular design.
Solution Approach 2:
Each end of the drum receives dedicated suction through localized suction openings connected to the turbine via channels. This local quality approach ensures uniform suction at each end while the overall system maintains balanced complexity.
2Productivity
If rollers are used to clamp leaves for removal, then leaf detachment is effective, but the rollers block the air stream and require high suction power
Solution Approach 1:
The rollers are extracted from the system and replaced by the dual-stream air suction mechanism. The air stream itself performs the clamping and removal function, eliminating the energy-wasting roller obstruction while maintaining effective leaf detachment through localized suction at drum ends.
Solution Approach 2:
The mechanical roller clamping system is replaced by a pneumatic solution using controlled air streams. The turbine-generated air flow creates localized negative pressure zones at drum ends that effectively clamp and remove leaves without the energy penalty of mechanical rollers blocking the air stream.
3Manufacturing precision
If a single air stream suction system is used, then the device structure is simple, but the suction coverage along the drum is uneven
Solution Approach 1:
The single air stream is segmented into two separate streams, each directed to a specific end of the drum through dedicated suction openings and channels. This segmentation achieves uniform suction distribution along the entire drum length while keeping the system complexity manageable through symmetric design.
Solution Approach 2:
The suction system transitions from a single-point or single-stream approach to a two-dimensional distribution pattern with suction openings at both ends of the drum. This dimensional change ensures uniform coverage along the drum length while maintaining structural simplicity through balanced configuration.
4Manufacturing precision
If the drum has a closed structure, then it provides structural integrity, but it prevents uniform suction and flattening of leaves along the drum
Solution Approach 1:
The drum structure incorporates perforations or openings that allow air penetration while maintaining structural integrity. These porous features enable uniform suction distribution and effective leaf flattening along the drum length without compromising the overall strength and rigidity of the drum.
Solution Approach 2:
The drum design uses asymmetric placement of suction openings at the ends rather than a symmetric closed structure. This asymmetric configuration allows air flow penetration for uniform suction while maintaining structural integrity through strategic opening placement that does not compromise overall drum strength.
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 device achieves uniform leaf removal over the entire drum length, reduces energy consumption, and allows for efficient operation in both standard and inverted positions, improving stripping quality and reducing labor and energy costs.
Implementation Method 1
a suction turbine making it possible to generate a suctioning-in air stream through the perforated wall
Data Source
AI summary
A double-stream stripping device, intended for the stripping of leaves from the vine, includes at least one stripping head (1) equipped with two counter-rotating drums (2) and (3), namely a first perforated (2a) drum (2) and a second drum (3) working in rotation with the first drum (2), a suction system (4) capable of creating negative air pressure in the first drum (2) and a system for driving drums (2) and (3) in rotation. The suction system includes two main suction openings and a turbine system and channeling elements (8, 9) making it possible to connect the latter to the main suction openings. Each open free end of the first drum is connected at one of the main suction openings in such a way as to create negative pressure, with a double air stream, constant and uniform, in the first drum, essentially over its entire length.