Segmented Reactor System for Plastic Melt Viscosity Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for treating plastics melt lack consistent treatment conditions, leading to uneven material quality and intrinsic viscosity in polycondensate melts.
Innovation Solution
A reactor system with interconnected chamber parts and independent drive systems for mixing and discharge elements, allowing for constant weight monitoring and control of the plastics melt, ensuring consistent treatment conditions and intrinsic viscosity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a single chamber reactor is used for treating plastics melt, then the device structure is simple, but the treatment conditions cannot be kept constant leading to uneven material quality
Solution Approach 1:
The reactor is divided into a first chamber and a second chamber, where the first chamber performs initial treatment and the second chamber maintains constant treatment conditions. This segmentation allows different functional zones within the reactor, enabling consistent material quality while avoiding the complexity of multiple separate reactors.
2Reliability
If the mixing element and discharge device share a common drive, then the device structure is simpler, but the extraction process may be interrupted affecting treatment continuity
Solution Approach 1:
The drive system is segmented into a first drive device for the mixing element and a second drive device for the discharge device. This allows independent operation of mixing and discharge functions, ensuring that discharge interruptions do not affect mixing continuity and vice versa, thereby maintaining treatment reliability.
Solution Approach 2:
The mixing element continuously pre-mixes the plastics melt in the second chamber before discharge. This preliminary continuous mixing action ensures that even if discharge is temporarily interrupted, the melt remains properly mixed and treatment conditions are maintained, ready for immediate continued discharge.
3Manufacturing precision
If weight monitoring is not implemented, then the device structure is simpler, but the intrinsic viscosity cannot be precisely controlled
Solution Approach 1:
A weight monitoring device is implemented to continuously measure the weight of plastics melt in the reactor. This weight information provides feedback to the control system, which adjusts processing parameters to maintain constant intrinsic viscosity, achieving precise control through real-time monitoring and adjustment.
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 setup maintains constant weight balance and quality of the plastics melt, enabling precise control over intrinsic viscosity and uninterrupted treatment, preventing interruptions in the extraction process.
Implementation Method 1
at least one mixing element (12) which is arranged in the second reactor housing part (5), which mixing element (12) is mounted in the second reactor housing part (5) so as to be rotatable about an axis of rotation (13)
Implementation Method 2
the reactor (2) is supported on a standing surface with the interposition of at least one weight-determining device (21), and in that a discharge device (19) for the plastics melt is arranged so as to adjoin the outlet opening (11) of the second reactor housing part (5), which discharge device (19) is also supported on the standing surface with the interposition of at least one weight-determining device (21)
Data Source
AI summary
An installation and a method for treating a plastic melt includes a reactor that has a reactor housing consisting of first and second reactor housing parts, a mixing element being arranged in the second reactor housing part and mounted thereupon so as to rotate about a rotational axis. The reactor, together with a discharge device and with at least one weighing device connected between these, is supported on a contact area.