Rotating Dry Ice Container with Feeding Screw

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Solution Overview

Problem

The transportation of dry ice pellets is hindered by bridging or binding issues during storage and transportation, leading to inefficiencies, increased costs, and product losses due to sublimation, as existing methods fail to handle large quantities efficiently.

Innovation Solution

A transport device comprising a cylindrical container with internal feeding screws and rotatable bearing arrangements at both ends, allowing for efficient loading and unloading of dry ice pellets, reducing bridging through controlled rotation and conical design of the container, which facilitates easy handling and distribution.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If dry ice pellets are transported in insulated containers using forklifts, then general cargo handling is achieved, but bridging and binding of pellets occurs making emptying difficult

Engineering Contradiction:
Improveease of loading and unloadingVSAvoidpellet flow reliability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The container is designed to rotate about its longitudinal axis, transforming from a static to a dynamic structure. This rotation prevents pellet bridging by continuously changing the pellet distribution and contact points, ensuring reliable emptying without manual intervention

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The container performs preliminary rotation before the unloading process begins. This preliminary action breaks any existing pellet bridges or bindings, preparing the pellet mass for smooth flow through the outlet opening

Inventive Principle:
Principle #10Preliminary action

2Quantity of substance

If standard insulated containers are used for dry ice transportation, then cargo transport is achieved, but efficient handling and distribution of large quantities is hindered

Engineering Contradiction:
Improvequantity of dry ice handledVSAvoidhandling efficiency
Core Design Contradiction:
Quantity of substanceVSProductivity

Solution Approach 1:

The rotating container enables continuous, controlled discharge of large quantities of pellets. By combining rotation with the feeding screw mechanism, the system maintains high productivity while handling bulk quantities efficiently

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The manual forklift handling is replaced by an automated rotation mechanism with controlled outlet discharge. This mechanical substitution enables efficient handling of large quantities without manual intervention

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Quantity of substance

If dry ice pellets are stored and transported in conventional containers, then transportation is achieved, but product losses due to sublimation increase

Engineering Contradiction:
Improvedry ice quantity retainedVSAvoidsublimation loss
Core Design Contradiction:
Quantity of substanceVSLoss of energy

Solution Approach 1:

The container maintains continuous rotation during storage and transportation, creating continuous useful action that prevents pellet bridging. This ensures the container can be completely and uniformly emptied, minimizing residual pellets that would continue to sublime

Inventive Principle:
Principle #20Continuity of useful action

Solution Approach 2:

The rotation mechanism enables self-service emptying of the container. The pellets automatically flow to the outlet under gravity and controlled rotation, ensuring complete evacuation without manual intervention that could leave residual sublimating pellets

Inventive Principle:
Principle #25Self-service

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 device enables efficient handling and distribution of larger dry ice quantities, reducing costs and fuel consumption while minimizing product loss by preventing bridging and optimizing the unloading process.

Implementation Method 1

an internal feeding screw for moving the pellets inside the container

Methodology Applied
Scientific EffectScrew mechanism: Screw

Implementation Method 2

a first bearing arrangement for rotatably supporting a first end of the container device and a second bearing arrangement for rotatably supporting a second end of the container device

Methodology Applied
Scientific EffectFriction reduction through bearing: Ball Bearing

Data Source

PatentEP1982934B1Dry ice bulk transporter
Publication Date: 2011.09.07 YARA INTERNATIONAL ASA
  • EP1982934B1 patent drawingFigure 1
  • EP1982934B1 patent drawingFigure 2A~2B
  • EP1982934B1 patent drawingFigure 3

AI summary

The invention relates to a transport device for transportation of pellets, the transport device (1) comprising a supporting device (2) and a container device (3), wherein: - the container device (3) comprises a substantially cylindrical container (33) with at least one opening for filling and unloading the container (33) and an internal feeding screw (34) for moving the pellets inside the container (33); - the supporting device (2) comprises a first bearing arrangement (22) for rotatably supporting a first end (31) of the container device (3) and a second bearing arrangement (24) for rotatably supporting a second end (33) of the container device (3); - the second bearing arrangement (24) comprises a driving means (50) for rotating the container device (3) in relation to the supporting device (2).