Spiral Sorting Device for Kitchen Waste Hardness Screening

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Solution Overview

Problem

Current methods for processing kitchen waste are inefficient due to high water content, rapid decay, and contamination risks, often requiring manual sorting which is labor-intensive and inconsistent, and are hindered by mixed materials like plastics and large bones that can damage equipment.

Innovation Solution

A spiral sorting device utilizing a housing with crushing rollers, sawtooth rings, and a push plate mechanism that differentiates between high and low hardness waste, employing a gear system and specialized crushing and cutting mechanisms to efficiently process and separate kitchen waste based on hardness, reducing adhesion and ensuring effective separation and dewatering.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If manual sorting is used to separate high-hardness waste from low-hardness waste, then the separation effectiveness can be improved, but the labor intensity and time consumption increase significantly

Engineering Contradiction:
Improveseparation effectivenessVSAvoidtime consumption
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The patent replaces manual mechanical sorting with an automated hardness screening mechanism. The system uses a rotating drum with abrasive material that automatically differentiates and separates high-hardness waste from low-hardness waste based on their hardness differences, eliminating the need for manual sorting while maintaining separation effectiveness.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the sorting parameter from manual visual inspection to automated hardness measurement. By using a rotating drum with abrasive material, the system automatically measures and separates waste based on hardness parameters, achieving consistent and reliable separation without human intervention.

Inventive Principle:
Principle #35Parameter changes

2Power

If traditional crushing methods are used to process mixed waste, then the crushing capability can be improved, but the equipment is prone to failure due to high-hardness waste like plastic bottles and bones

Engineering Contradiction:
Improvecrushing capabilityVSAvoidequipment reliability
Core Design Contradiction:
PowerVSReliability

Solution Approach 1:

The patent applies preliminary hardness screening before crushing. The rotating drum with abrasive material pre-separates high-hardness waste from low-hardness waste, so that only suitable materials are fed to the crushing mechanism. This preliminary action prevents high-hardness waste from damaging the crushing equipment while maintaining effective crushing capability.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent extracts and removes high-hardness waste from the crushing stream using the rotating drum separation mechanism. By taking out plastic bottles, bones, and other high-hardness materials before they reach the crushing section, the system protects the equipment from damage while maintaining its crushing capability for appropriate materials.

Inventive Principle:
Principle #2Taking out (Extraction)

3Quantity of substance

If waste is mixed with plastic bottles, big bones, and elongated substances, then the waste volume can be increased, but the drying effect is reduced due to large pieces and long fiber substances

Engineering Contradiction:
Improvewaste volumeVSAvoiddrying effect
Core Design Contradiction:
Quantity of substanceVSProductivity

Solution Approach 1:

The patent segments the waste processing into distinct stages: hardness screening, crushing, and drying. The rotating drum separates waste by hardness, the crushing mechanism processes suitable materials into appropriate sizes, and the drying section handles the material efficiently. This segmentation ensures that each stage optimizes its function without being compromised by unsuitable materials.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent applies preliminary hardness screening to remove high-hardness waste before the drying process. By pre-separating plastic bottles, bones, and other unsuitable materials, the system ensures that only materials appropriate for drying are processed in the drying section, maintaining effective drying performance while still handling significant waste volumes.

Inventive Principle:
Principle #10Preliminary action

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 device effectively preliminary crushes high-hardness waste, reduces adhesion, and accelerates separation of low-hardness waste, ensuring consistent processing and preliminary dewatering, thereby improving efficiency and reducing manual labor while maintaining high hardness waste treatment quality.

Implementation Method 1

the crushing roller breaks the kitchen waste

Methodology Applied
Scientific EffectMechanical crushing: Mechanical Force

Implementation Method 2

the push plate moves the kitchen waste above the interior of the sawtooth ring, so that the kitchen waste rises along the inner wall of the sawtooth ring

Methodology Applied
Scientific EffectMechanical cutting: Mechanical Force

Implementation Method 3

a metal mesh is mounted on a lower end of the housing, and a water outlet is mounted on a lower end of the metal mesh

Methodology Applied
Scientific EffectPhysical filtration: Filter (physical)

Data Source

PatentUS12145157B1Spiral sorting device for kitchen waste based on hardness screening
Publication Date: 2024.11.19 SHANGHAI YIMAI IND CO LTD
  • US12145157B1 patent drawing
  • US12145157B1 patent drawing
  • US12145157B1 patent drawing

AI summary

The present invention discloses a spiral sorting device for kitchen waste based on hardness screening, and relates to the technical field of kitchen waste processing, including a housing, wherein a feed plate, a discharge plate, a gear box, and a drive motor are mounted on the outer side of the housing, two crushing rollers are mounted inside the housing, the two crushing rollers are connected to the drive motor via the gear box, a gear set is provided inside the gear box, several push plates and several sawtooth rings are mounted inside the housing, a slicing knife is mounted between the sawtooth rings, the sawtooth ring is perpendicular to the slicing knife, and linkage rings are mounted at the front end and rear end of the slicing knife. The present invention is provided with two types of crushing mechanisms. The two types of crushing mechanisms perform targeted crushing according to the hardness of the kitchen waste. In order to enable the crushed kitchen waste to reduce the time required for drying and dewatering, an extruding function is added before the crushed kitchen waste leaves the housing so as to perform preliminary dewatering on the crushed kitchen waste.