Bag Spout Retainer Delays Discharge Opening
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Solution Overview
Problem
The existing bulk bag discharge systems with side-secured spouts pose a risk to human operators as the contents can quickly flow and become airborne upon tie string release, potentially leading to inhalation hazards due to the rapid opening of the discharge spout.
Innovation Solution
A bag spout retainer apparatus is introduced, featuring a bag-engaging member, such as a paddle, mounted on a frame above the discharge spout, which is driven by a pneumatic cylinder to maintain the spout in a closed position until the tie is released, allowing the operator to move away safely before the contents start flowing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the tie strings are released to allow gravity to open the discharge spout, then the bag contents can flow into the receptacle, but the operator is exposed to airborne contents during the rapid opening
Solution Approach 1:
The patent applies preliminary action by having the operator release the tie strings from a safe distance before the spout actually opens. The spout remains closed by gravity and the tie until the operator is positioned safely, at which point the spout opens automatically when the tie is released. This allows the discharge process to be initiated without exposing the operator to airborne contents.
2Object-affected harmful factors
If a mechanical retainer apparatus is added to delay spout opening, then operator safety is improved, but device complexity increases
Solution Approach 1:
The patent applies self-service by using the existing gravitational force and the spout's own weight to maintain the closed position. The spout is designed to automatically open when the tie is released, without requiring additional actuators or complex control systems. The frame and receptacle structure also provide the self-service function of positioning and supporting the bag during discharge.
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 solution effectively delays the opening of the discharge spout, providing the operator with sufficient time to move away from the bag, thereby preventing exposure to the contents and enhancing safety during bulk bag discharge operations.
Implementation Method 1
a reciprocating driver is attached to the bag-engaging member adapted for and moving the bag-engaging member between a retracted position out of engagement with the lower end of the bag and an extended bag engaging position
Implementation Method 2
when the tie strings are released the spout will be forced down into a vertical discharge position allowing the spout to open and the bag contents to rapidly flow from the spout
Data Source
AI summary
A bag spout retainer apparatus for a bulk bag discharger is the disclosure of the type wherein a frame suspends a bulk bag with a side-secured discharge spout, and the spout is held in a closed position against the bag. A bag-engaging member is mounted on the frame in a position laterally-displaced from a lower end of the bag above the discharge spout. A reciprocating driver is attached to the bag-engaging member and is adapted for moving the bag-engaging member between a retracted position out of engagement with the lower end of the bag and an extended bag engaging position for engaging and holding the bag spout in a closed position against the side of the bag during release of the spout against the side of the bag.