Single-Stage Plastic Recycling Device with Multi-Stage Blade Assembly

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Solution Overview

Problem

Existing recycling processes for synthetic resin plastic waste require multiple stages and transfers, leading to inefficiencies and increased costs due to the need for multiple processing steps and material handling.

Innovation Solution

A single-stage plastic recycling device with a multi-stage blade assembly featuring interchangeable blade segments on both rotating and fixed blade supports, allowing for simultaneous shredding, grinding, and pulverization in a single pass, along with a cooling system to manage heat and improve material flow.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If multiple processing stages and transfers are used to recycle plastic waste, then processing completeness is improved, but device complexity and operational costs increase

Engineering Contradiction:

Improveprocessing completenessVSAvoidnumber of processing stages

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines multiple processing functions (shredding, grinding, and pulverization) into a single integrated processing chamber with a multi-stage blade assembly. The rotating blade assembly includes multiple blades at different stages that perform sequential processing operations within one unit, eliminating the need for separate processing stages and material transfers between equipment.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The single-stage recycling device performs multiple functions simultaneously: it shreddes large plastic pieces, grinds them into smaller particles, and pulverizes them into fine reusable material all within one processing cycle. The multi-stage blade assembly enables one device to replace multiple specialized processing equipment.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Manufacturing precision

If multiple processing stages are used, then material is thoroughly processed, but processing time and operational costs increase

Engineering Contradiction:

Improveproduct uniformityVSAvoidprocessing speed

Core Design Contradiction:

Manufacturing precisionVSProductivity

Solution Approach 1:

The processing occurs continuously in a single pass through the processing chamber. Material is fed in and undergoes sequential shredding, grinding, and pulverization without interruption or transfer between stages. The continuous rotation of the multi-stage blade assembly ensures uninterrupted processing action throughout the chamber.

Inventive Principle:

Principle #20Continuity of useful action

Solution Approach 2:

The blade assembly is divided into multiple stages with different blade configurations positioned at various radii from the center. Each stage performs a specific function (shredding at outer radius, grinding at middle radius, pulverization at inner radius), allowing simultaneous multi-functional processing in a single continuous operation.

Inventive Principle:

Principle #1Segmentation

3Reliability

If multiple equipment setups are used, then processing thoroughness is improved, but material handling requirements and operational costs increase

Engineering Contradiction:

Improveprocessing thoroughnessVSAvoidmaterial handling requirements

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent integrates multiple processing functions into a single processing chamber where material undergoes sequential shredding, grinding, and pulverization without being transferred between equipment. This eliminates the need for complex material handling systems including conveyors, elevators, and transfer mechanisms between multiple processing stages.

Inventive Principle:

Principle #5Merging (Combining)

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 enables the production of reusable, uniform-sized plastic products with enhanced processing speed and efficiency, reducing the need for multiple equipment setups and material transfers, thus lowering operational costs and improving product consistency.

Implementation Method 1

along with a cooling system to manage heat and improve material flow

Methodology Applied

Scientific EffectCooling: Cooling

Data Source

PatentUS10391675B2Convertible recycling apparatus for synthetic resin materials

Publication Date: 2019.08.27 PIDGEON BROOKE

AI summary

An apparatus for recycling synthetic thermoplastic waste material combining heretofore multiple stage processing steps in a single stage shredder grinder pulverizer device. The apparatus has multiple interchangeable material processing blade sets on respective effacing engageable rotating and fixed blade mounts within a cooled material infeed and blade containment enclosure with multiple vacuum outlet ports and communicating vacuum ducts to draw off and transport processed material therefrom for separation and classification, as required. Each replaceable interchangeable processing blade set includes registerable shredding and grinding blades and annular pulverizing blade sets on fixed and movable mediums for progressive processing of waste material into uniform recyclable material.