Angled Gas Lines for Collision-Free Polymer Granulation
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Solution Overview
Problem
Existing granulation arrangements for plasticised materials face challenges in optimal separation and discharge of granulate particles, leading to particle collisions and deposits within the transport path.
Innovation Solution
The arrangement features angled lateral wall surfaces in the gas discharge and supply lines, a scraper system with rotating knives, and a specially shaped housing with a gas flow to prevent particle collisions and adhesion, ensuring efficient and collision-free transport of granulates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If particles are transported through a conventional housing and gas lines, then particle separation and discharge occur, but particle collisions and deposits occur in the transport path
Solution Approach 1:
The gas supply line and gas discharge line are arranged in different spatial dimensions and orientations. The gas supply line extends in a first direction while the gas discharge line extends in a second direction that is different from the first direction, creating a three-dimensional flow path that prevents particle collisions and deposits by distributing particles through spatial separation.
2Speed
If particles are carried along by gas flow, then transport efficiency improves, but particle adhesion to walls and mutual adhesion occurs
Solution Approach 1:
The housing and gas lines feature asymmetric angular configurations. The gas supply line includes lateral wall surfaces that form a first angle with each other, while the gas discharge line includes lateral wall surfaces that form a second angle with each other, where the first angle is greater than the second angle. This asymmetric design creates optimized flow patterns that maintain particle suspension and prevent adhesion to walls throughout the transport path.
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 solution effectively prevents mutual collisions and adhesion of granulates, ensuring safe and rapid solidification, reducing deposition on housing walls, and enhancing the granulation process by utilizing a controlled gas flow for transportation and solidification.
Implementation Method 1
The extruded materials are transported by a medium, in particular a gas, which is passed through the arrangement
Implementation Method 2
these material particles or granulates or sausages or the like are thereby cooled and/or solidified
Implementation Method 3
The aim is mainly to solidify the separated particles as quickly as possible
Data Source
AI summary
Disclosed is an arrangement for granulating polymer material, having a housing with a gas supply line, connected opposite the latter to the housing, having a rectangular cross-section, a granulating unit located at least partially in the housing and having a perforated plate of a feed or plasticising unit feeding into the housing, and a scraper which crushes or separates the material emerging through the recesses of the perforated plate, wherein in a plane running parallel to the plane of the perforated plate, the two lateral wall surfaces of the gas discharge line perpendicular to this plane include an angle α2 with one another, and the two lateral wall surfaces of the gas supply line perpendicular to this plane include an angle α1, wherein the two angles α1, α2 open towards the housing and wherein the angle α1 is greater than the angle α2.