Shredding Mill Inlet Pipe Thrust Mechanism for Continuous Scrap Feeding
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Solution Overview
Problem
Existing shredding mills in waste disposal plants face inefficiencies due to discontinuous scrap feeding, leading to uneven motor load, increased bulk, safety hazards from unexpected shredded waste expulsion, and high maintenance needs.
Innovation Solution
A shredding mill with an inlet pipe system featuring first and second thrust means to ensure constant scrap feeding, and stopping means to prevent overloading and accidental expulsion, allowing coordinated and continuous operation while reducing plant bulk and manpower requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conveyor slide with great inclination is used to ensure adequate feed of the shredding chamber, then the feeding efficiency is improved, but the overall bulk of the shredding plant increases
Solution Approach 1:
The invention changes the feeding approach from using a steeply inclined conveyor slide (one-dimensional solution) to using a horizontally arranged inlet pipe with thrust means (another dimensional approach). This allows the scrap to be fed efficiently into the shredding chamber without requiring a great inclination, thereby reducing the overall bulk of the plant while maintaining feeding efficiency.
2Device complexity
If the shredding chamber is fed discontinuously as in known mills, then the structure is simpler, but the motor works under non-optimal conditions leading to overloading, breakages, and idling
Solution Approach 1:
The invention applies preliminary action by using thrust means to progressively push the scrap into the shredding chamber before the shredding process begins. This ensures that the chamber is constantly filled with scrap, allowing the motor to work continuously under optimal conditions without overloading or idling, thereby improving reliability while maintaining structural simplicity.
3Productivity
If portions of shredded waste are allowed to come out suddenly from the shredding chamber, then the processing is faster, but safety hazards occur for operators
Solution Approach 1:
The invention introduces an intermediary element - the outlet grille with opening closing means - between the shredding chamber and the external environment. This intermediary controls the discharge of shredded waste, preventing sudden expulsions that could harm operators while maintaining efficient processing speed. The grille acts as a mediator that manages the flow of material safely.
Data Source
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AI summary
Mill for shredding scrap, comprising a shredding chamber (12) able to contain scrap (11) during the shredding and having a shredding unit (15), an inlet pipe (20) connected to an opening (13) of the shredding chamber (12), in order to transfer the scrap (11) toward the shredding chamber (12). The mill comprises first thrust means (22) associated with the inlet pipe (20), selectively movable between a loading position (A) of the scrap (11) into the inlet pipe (20) and one or more intermediate positions to transfer by means of thrusting the scrap (11) toward the shredding chamber (12). The mill also comprises second thrust means (26), disposed in proximity with the inlet (13) of the shredding chamber (12), selectively movable between an inactive position, in which they do not interfere with the introduction of the scrap (11) into the shredding chamber (12) by the first thrust means (22), and one or more thrust positions in which they introduce into the shredding chamber the scrap (11) moved by the first thrust means (22) until the scrap is in proximity with the opening (13).