Rotary Press Compaction for Pneumatic Waste Transport
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Solution Overview
Problem
Existing pneumatic waste transfer systems face challenges in efficiently compacting and transporting waste materials, particularly in densely populated areas, due to large pipe diameters and frequent blade replacement in waste mills.
Innovation Solution
A method and apparatus utilizing a rotary press with rotatable and stationary handling means, driven by a power transmission system, to compact waste materials efficiently, allowing for smaller pipe diameters and preventing clogging, combined with a piston-cylinder compression phase for further material transfer into pneumatic pipes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If waste material is transported uncompressed through pneumatic pipes, then the pipe diameter must be large (e.g., 500 mm) to accommodate the bulk volume, but this increases the space occupation and infrastructure requirements
Solution Approach 1:
The patent applies preliminary compression action before the waste material enters the pneumatic transport pipe. A rotary press device compresses the waste material into a compacted state with reduced volume before it is suctioned into the pipe, allowing smaller pipe diameters to be used while maintaining transport capability.
2Productivity
If a waste mill is used to grind wastes before transport, then the material can be moved more efficiently, but the blades are subjected to large stressing and must be replaced often
Solution Approach 1:
The patent replaces the traditional rotating blade waste mill mechanism with a rotary press device that uses a different mechanical principle. Instead of cutting blades that grind waste, the rotary press uses compressing elements that compact the waste material, reducing the mechanical stress on components and extending their service life while maintaining processing efficiency.
3Productivity
If suction is used to transfer material from the rotary press into the transport pipe, then the material can be moved efficiently, but the system requires precise control of pressure differences
Solution Approach 1:
The patent employs a self-regulating suction system where the pressure difference is automatically adjusted based on the material flow. The suction force is generated by the pneumatic system itself, and the flow control valve regulates the air intake to maintain optimal pressure differential, eliminating the need for complex external pressure control mechanisms while ensuring efficient material transfer.
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 efficient pneumatic transportation of waste materials with significantly smaller pipe sizes and reduced clogging, extending the lifespan of handling components by using a combination of suction and pressure differences.
Implementation Method 1
a press device (1), arranged in connection with the input point or in the proximity of it, to compact the material to be handled
Implementation Method 2
the material to be handled is transferred in the piping by means of suction or by means of suction and overpressure
Implementation Method 3
the material to be handled can be further compressed with a second compression phase arranged between the output aperture of the rotary press and the transport pipe
Data Source
Figure 1~2
Figure 3
Figure 4a~4e
AI summary
Method for handling material in a pneumatic pipe transport system, in which material, such as waste material, is input from the input aperture of an input point, such as from the input aperture of a refuse chute (3) or of some other input point (200), and is handled with a press device (1), arranged in connection with the input point or in the proximity of it, to be more compact and transferred onwards in the transfer piping. The press device is a rotary press, comprising rotable and stationary ring-like handling means (10A, 10B, I0C) each having an aperture (11A, 11B, 11C), arranged eccentrically with respect to its axis of rotation, whereby the material to be handled is conducted into the rotary press and/or through it at least partly by means of suction and/or a pressure difference of the pneumatic pipe transport system. The invention also relates to an apparatus.