Inflatable Bladder for Rail Hopper Discharge Gate
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Bulk materials, especially grain-derived products, often harden during transport in rail hopper cars, forming solid cohesive masses that are difficult and dangerous to break up for release, posing challenges for rail car workers and limiting shipment formulations.
Innovation Solution
Inflatable bladders are positioned over the discharge gates of rail car hoppers to impede access by the bulk material during transport, allowing easy access and release once deflated, even if the material has set up, by creating voids that allow spontaneous crumbling and descent.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If bulk material is transported in a rail hopper car with gravity-fed hoppers, then the material can be easily released through the discharge gates, but the material will harden and form solid cohesive masses during transport that require manual breakup
Solution Approach 1:
An inflatable bladder is introduced as an intermediary element between the bulk material and the discharge gate. The bladder prevents direct contact between the material and gate during transport, avoiding material adhesion and hardening. When deflated at the destination, it allows unobstructed material flow without manual intervention.
Solution Approach 2:
The bladder is inflated before transport to establish protective coverage over the discharge gate. This preliminary action prevents the material from contacting and adhering to the gate during the entire transport journey, eliminating the need for manual breakup operations upon arrival.
2Productivity
If workers manually breakup solidified bulk material in the rail car, then the material can be released, but the process is time consuming and dangerous particularly with toxic products
Solution Approach 1:
The bladder serves as a protective intermediary that eliminates the need for workers to enter the rail car and manually contact the material. By preventing material hardening on the discharge gate, the bladder removes the hazardous manual breakup operation entirely, improving both safety and efficiency.
Solution Approach 2:
The system enables self-service unloading where the deflated bladder allows material to flow spontaneously through the discharge gate without human intervention. The material releases itself through gravity, eliminating the need for workers to perform dangerous manual breakup operations.
3Reliability
If shippers limit sugar content in corn gluten feed shipments, then set up phenomenon is reduced, but the formulation flexibility and product quality options are restricted
Solution Approach 1:
The bladder acts as a physical barrier that decouples the material formulation from the discharge mechanism. Since the bladder prevents material contact with the discharge gate, materials with higher sugar content or other formulations prone to setting up can be transported without modification, restoring formulation flexibility to shippers.
Solution Approach 2:
The invention changes the operational parameters of the discharge system by introducing the bladder intermediary. This allows shipment of materials with varying compositions, including higher sugar content corn gluten feed, without the need to adjust material formulation parameters to prevent setting up.
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 method prevents the need for manual breakup of solidified materials, ensuring safer and more efficient unloading processes and allowing for the transportation of materials that might otherwise be limited by set-up concerns.
Implementation Method 1
the bladder is positioned over the aperture, such that the bladder at least substantially impedes access to the aperture by the bulk material
Implementation Method 2
creating voids that allow spontaneous crumbling and descent
Data Source
AI summary
Disclosed are a method and an assembly for bulk transport. An inflatable bladder is inserted into a container and disposed proximal and above a gravity-fed aperture. The container may be, for instance, a hopper rail car. A bulk material then is introduced into the container, the bulk material being, for instance, a grain-based material such as corn gluten feed. The bladder is positioned and preferably secured laterally with respect to the aperture to impede access to the aperture by the bulk material. When the container has reached the transport destination, the bladder is deflated. If the bulk material has set up during transport, access to the aperture nonetheless will have been maintained.