Shredder Nozzle Assembly with Elastic Element for Dust Capture
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Solution Overview
Problem
Existing shredder nozzle assemblies are prone to wear, blockages, and have a short lifespan, leading to inefficient dust capture and increased humidity levels, which complicates subsequent sorting processes and requires substantial modifications to the cutting drum, making them difficult to install in existing installations.
Innovation Solution
A moveable nozzle assembly with an elastic element is mounted in the shredder's cutting drum, allowing the nozzle to shift between impact and home positions, reducing damage and blockages, and is designed for easy installation and maintenance, using non-magnetic materials to prevent magnetic interference, with a self-cleaning mechanism and adjustable droplet size for efficient dust capture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the nozzle is mounted fixedly in the shredder housing, then the structure is simple and easy to manufacture, but the nozzle is susceptible to wear and blockages and has a short lifespan
Solution Approach 1:
The nozzle is made movable rather than fixed, allowing it to shift position dynamically in response to impacts from shredded material. This dynamic capability protects the nozzle from damage while maintaining atomization function, directly resolving the contradiction between reliability and structural simplicity.
Solution Approach 2:
The nozzle assembly is divided into separate functional components: the movable nozzle, the elastic element, and the nozzle housing. This segmentation allows the nozzle to move independently for protection while the housing remains stationary, improving reliability without excessive complexity.
2Productivity
If the nozzle is positioned close to the cutting drum for effective dust capture, then dust capture efficiency is improved, but the nozzle is more exposed to impacts and damage
Solution Approach 1:
The nozzle dynamically adjusts its position between a retracted state (protected from impacts) and an extended state (close to cutting drum for dust capture). This dynamic positioning resolves the contradiction by allowing the nozzle to be close to the drum only when needed for atomization, while being protected during high-impact periods.
Solution Approach 2:
The elastic element provides beforehand cushioning by absorbing impact forces before they reach the nozzle. This cushioning mechanism allows the nozzle to withstand repeated impacts while maintaining its position for effective dust capture, resolving the contradiction between proximity to the cutting drum and damage risk.
3Object-affected harmful factors
If liquid is atomized in the input zone and output zone, then dust formation is prevented, but the humidity level of the material increases excessively
Solution Approach 1:
The atomization is applied locally at the cutting drum where dust is generated during shredding, rather than in the input or output zones. This localized application ensures dust suppression exactly where needed while minimizing unnecessary liquid contact with material, thereby controlling humidity levels and resolving the contradiction between dust prevention and humidity control.
4Productivity
If the nozzle is mounted in the cutting drum itself, then atomization occurs where dust forms, but substantial modifications to the cutting drum are required
Solution Approach 1:
The nozzle assembly is extracted from the cutting drum structure and mounted separately in the shredder housing. This extraction eliminates the need for substantial modifications to the cutting drum while maintaining the benefit of atomization at the dust generation zone, resolving the contradiction between dust capture efficiency and ease of manufacture.
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 significantly extends the nozzle's lifespan, reduces the risk of damage and blockages, maintains low humidity levels, and enhances dust capture efficiency, allowing for easy installation and maintenance in existing shredder systems.
Implementation Method 1
an elastic element mounted to work in conjunction with the nozzle and the nozzle housing such that the nozzle: is held in the home position in an unloaded rest condition in which the nozzle is not subjected to an impact; and as a result of the force of an impact temporarily moves in the direction of the impact position
Implementation Method 2
a nozzle with an intake orifice configured to receive the liquid, and a discharge orifice configured to atomise the liquid
Data Source
AI summary
A shredder comprises one or more nozzle assemblies each including an elastic element configured to work in conjunction with the nozzle and the nozzle housing such that the nozzle is held in the home position when in an unloaded rest condition and as a result of an impact temporarily moves in the direction of the impact position.