Multi-Axis Variable-Speed Hot Washing for Plastic Flake Cleaning
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Solution Overview
Problem
Existing hot washing machines for plastic recycling require multiple devices, have low cleaning efficiency due to single-shaft structures and low rotating speeds, leading to incomplete removal of impurities and increased costs, and consume excessive medicinal water.
Innovation Solution
A multi-axis variable-speed hot washing machine with multiple rotation mechanisms, scraping mechanisms, and adjustable blade shafts that enhance friction and cleaning efficiency, combining hot washing and friction processes in a single device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single-shaft structure is used in hot washing machines, then the device complexity is reduced, but the cleaning efficiency deteriorates due to low rotating speed and incomplete impurity removal
Solution Approach 1:
The single shaft is segmented into multiple independent cleaning blade shafts (first, second, and third cleaning blade shafts) that can rotate at different speeds. This segmentation allows each shaft to independently contribute to cleaning different areas of the bottle flakes, thereby improving overall cleaning efficiency while maintaining manageable device complexity through modular design.
Solution Approach 2:
The patent implements variable speed control for each cleaning blade shaft, allowing dynamic adjustment of rotating speeds. The first cleaning blade shaft rotates at a different speed than the second and third shafts, enabling optimized cleaning action adapted to different cleaning stages and material characteristics, thus resolving the contradiction between simple structure and effective cleaning.
2Reliability
If multiple hot washing machines and a friction machine are connected through a screw conveyor, then the cleaning process is completed, but the device occupies a large volume and takes a long time to wash
Solution Approach 1:
The patent merges the functions of multiple hot washing machines and a friction machine into a single integrated device. The cleaning chamber incorporates multiple cleaning blade shafts that perform both hot washing and friction cleaning functions simultaneously, eliminating the need for separate machines and screw conveyors, thus dramatically reducing device volume while maintaining complete cleaning process reliability.
Solution Approach 2:
The single cleaning chamber is designed to perform multiple cleaning functions through its multi-shaft configuration. The different blade shafts execute different cleaning actions (stirring, rubbing, friction) within the same space, making the device universal and multi-functional, thereby reducing the overall system volume while ensuring thorough cleaning.
3Device complexity
If a single cleaning blade shaft rotates at low speed, then the device complexity is simplified, but the impurities on the surfaces of bottle flakes cannot be effectively cleaned
Solution Approach 1:
The single cleaning blade shaft is segmented into multiple independent shafts (first, second, and third cleaning blade shafts), each capable of rotating at optimized speeds. This segmentation enables each shaft to target specific cleaning requirements, achieving high surface cleaning quality while keeping individual shaft structures simple and manageable.
Solution Approach 2:
Different cleaning blade shafts are assigned different rotating speeds tailored to their specific cleaning functions. The first cleaning blade shaft operates at a different speed than the second and third shafts, allowing each to optimize its cleaning action for its local function, thereby achieving high overall surface cleaning quality without requiring excessive complexity in any single component.
4Productivity
If the bottoms of hot washing machines and the feeding screw conveyor are in communication, then materials are transferred efficiently, but high-temperature medicinal water enters the friction machine and decreases water level in hot washing machines
Solution Approach 1:
The patent merges the washing and material transfer functions into a single cleaning chamber design. The cleaning blade shafts simultaneously perform cleaning and propel materials toward the discharge end, eliminating the separate feeding screw conveyor. This integration ensures that medicinal water remains contained in the cleaning chamber while materials are efficiently transferred, resolving the contradiction between transfer efficiency and water retention.
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 multi-axis design improves cleaning efficiency, reduces device and space costs, and minimizes water consumption while achieving high-quality cleaning of plastic flakes.
Implementation Method 1
the cleaning blade shaft has a low rotating speed. Usually, when the single shaft is stirring, the materials also rotate with the cleaning blade shaft... the surfaces of the materials cannot be fully rubbed, resulting in incomplete removal of the impurities and dirt
Implementation Method 2
an appropriate amount of medicinal water is added into the hot washing machines, and after stirring and cleaning in high-temperature medicinal water for a period of time, dirt and impurities on the bottle flakes are removed and paper labels or glue on the bottle flakes are softened
Data Source
AI summary
A multi-axis variable-speed hot washing machine is provided, including a cleaning chamber, a drive apparatus, and a rotation mechanism. The rotation mechanism is arranged in an inner cavity of the cleaning chamber and is in transmission connection with the drive apparatus. At least one or more groups of rotation mechanism is arranged. The inner wall of the cleaning chamber is provided with a scraping mechanism that enhances a squeezing and frictional cleaning effect on a to-be-cleaned material.