Protective Cage for Bag Discharge Conduit Inlet

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Solution Overview

Problem

Existing big bag discharging systems lack effective safety mechanisms to prevent operator injury from downstream equipment and do not adequately control dust emissions or product contamination, especially when handling heavy bags with granular or powdery products.

Innovation Solution

A system comprising a vibration unit to discharge products from big bags, a conduit with a protective cage that restricts access to the inlet, and downstream equipment, which prevents operator contact with potentially hazardous parts and allows for easy cleaning by allowing access when stopped.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a protective cage is arranged around the inlet of the conduit, then operator safety is improved by restricting access to hazardous parts, but access for cleaning and maintenance deteriorates

Engineering Contradiction:
Improveoperator safetyVSAvoidaccess for cleaning
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The protective cage is designed with movable doors that can transition between open and closed positions. During operation, the doors remain closed to protect operators from hazardous moving parts. During cleaning or maintenance, the doors can be opened to provide access to the conduit inlet and downstream equipment, thus resolving the contradiction between safety during operation and accessibility during maintenance

Inventive Principle:
Principle #15Dynamics

2Reliability

If the protective cage restricts access to the conduit inlet, then operator safety improves, but product discharge efficiency may worsen due to potential flow restrictions

Engineering Contradiction:
Improveoperator safetyVSAvoidproduct discharge efficiency
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The protective cage structure incorporates strategically positioned openings and gaps in its design that allow product flow to pass through while the main body of the cage remains closed to protect operators. The openings are sized and positioned to maintain adequate product flow while still providing effective protection against hazardous moving parts

Inventive Principle:
Principle #3Local quality

3Ease of operation

If no protective barrier is used around the system, then ease of operation and access for cleaning improves, but operator safety deteriorates due to exposure to hazardous moving parts

Engineering Contradiction:
Improveaccess for cleaningVSAvoidoperator injury risk
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The protective cage with movable doors allows the system to dynamically adapt its protection level based on operational requirements. During normal operation, the closed cage provides full protection. During cleaning or maintenance when access is needed, the doors can be opened, thus providing both safety during operation and accessibility during maintenance without requiring complete removal of protection

Inventive Principle:
Principle #15Dynamics

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 system efficiently prevents operator contact with hazardous equipment and ensures safe operation by restricting access to the conduit inlet, reducing the risk of injury and product contamination while allowing for efficient discharge and cleaning.

Implementation Method 1

a vibration unit arranged to support the bag and to vibrate so that the product exits an opening of the bag

Methodology Applied
Scientific EffectVibration: Vibration

Data Source

PatentUS11345502B2System for discharging product from a bag
Publication Date: 2022.05.31 TETRA LAVAL HOLDINGS & FINANCE SA
  • US11345502B2 patent drawing
  • US11345502B2 patent drawing
  • US11345502B2 patent drawing

AI summary

A system for discharging product from a bag, the system including: a vibration unit arranged to support the bag and to vibrate so that the product exits an opening of the bag; a conduit having an inlet that is located below the vibration unit to receive the product; a downstream equipment connected to the conduit to receive the product from the conduit; wherein a protective cage is arranged around the inlet of the conduit, the protective cage having an open position to allow access to the inlet, and a closed position to restrict access to the inlet.