Movable Elements for Mass Flow Control
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Solution Overview
Problem
Existing methods for controlling the flow of multi-layer streams of rod-shaped articles, such as in the tobacco industry, often result in damage to the articles due to the insertion of plates or tapes into the flow path, particularly when redirecting or stopping the stream, as they lack effective shock absorption and can cause pressure buildup.
Innovation Solution
The method involves using swing or slide-shiftable movable elements that form the side walls of angularly positioned channels, allowing for temporary flow stopping and restarting without degrading the articles, by absorbing pressure and minimizing contact with sharp edges through the controlled movement of these elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If plates or tapes are inserted into the flow path to control or redirect the stream, then flow control is achieved, but rod-shaped articles are damaged due to pressure buildup and lack of shock absorption
Solution Approach 1:
The patent applies beforehand cushioning by introducing a flexible membrane that can deform and absorb pressure buildup before it reaches the rod-shaped articles. The membrane acts as a cushioning element that precedes the articles in the flow path, preventing direct contact between rigid control elements and the articles, thereby eliminating damage while maintaining flow control capability.
2Ease of operation
If a slidable plate is inserted horizontally into the channel to separate streams, then flow separation is achieved, but rod-shaped articles are damaged during insertion
Solution Approach 1:
The patent applies dynamics by replacing the rigid, horizontally inserted plate with a flexible membrane that can dynamically adapt its shape and position. The membrane can be inserted vertically in a flexible state, then deform to conform to the channel geometry, allowing stream separation without the mechanical shock and damage caused by rigid horizontal insertion of traditional plates.
Solution Approach 2:
The patent directly implements flexible shells and thin films by using a flexible membrane instead of rigid plates or tapes. The membrane's flexibility allows it to be inserted without causing damage to rod-shaped articles, while still achieving the desired flow separation and control functions. The thin film structure can deform to accommodate pressure changes and maintain smooth flow paths.
3Productivity
If rigid control elements are used to stop or redirect flow, then flow control is achieved, but pressure buildup occurs causing article degradation
Solution Approach 1:
The patent uses flexible membranes to replace rigid control elements, allowing the membrane to deform under pressure rather than creating sharp pressure buildups. This maintains flow control efficiency while eliminating the stress concentration and pressure spikes that cause article degradation, as the flexible membrane smoothly redistributes pressure throughout the flow.
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
This approach reduces the degradation of outer layer articles by absorbing pressure and allows for seamless flow control, preventing pressure buildup and maintaining the ordered arrangement of rod-shaped articles during flow redirection, thereby minimizing damage.
Implementation Method 1
the flow of rod-shaped articles takes place by gravity or is forced
Data Source
Figure 1~3
Figure 4~5
Figure 6~8
AI summary
The method of control consists in altering the flow path by means of swing and/or slide shiftable movable elements (5 and 10), constituting a fragment of the opposite side walls (2 and 3) of an angularly positioned channel (1), which after shifting stop the flow or direct it to another receiving device or simultaneously to multiple receiving devices, with the possibility of restoring the flow after shifting the movable elements (5 and 10) to previous position. The device is situated in the channel (1), the first side wall (2) of which is provided with a first movable element (5), and a fragment of the opposite second side wall (3) forms a second movable element (10), with the first movable element (5) being mounted on a pivot (6) together with a perpendicular plate (7), on which also the second movable element (10) by means of an actuator (9) is mounted. The second element (10) may have the shape of a cylinder sector or a triangular prism or take the shape of a rotating plate. Below the movable elements (5 and 10), and above the horizontal conveyor (4), a shutoff element (8) or a disposal path may be situated. Below the disposal path, a container instead of the horizontal conveyor (4) may be arranged. Movable elements may appear also in the central part of the angularly positioned channel, between its upper and lower parts.