Pressurizable Sealing Rings for Bulk Material Container Bag

Solution Overview

Problem

Existing devices for emptying bulk goods into tubular container bags struggle to prevent small particles from being released into the ambient air during the decanting process, and existing solutions are not cost-effective or simple to operate.

Innovation Solution

The device employs three coaxially arranged pressurizable sealing rings that can be activated with compressed air, with the upper ring having a cover flange and the middle ring a connector for the collecting housing, ensuring an optimal seal by pressing the S-shaped container bag into a groove and against a web, preventing particle release.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If multiple sealing rings are used to prevent particle release, then sealing effectiveness is improved, but device complexity increases

Engineering Contradiction:
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The sealing system is divided into three separate sealing rings (first, second, and third sealing rings) arranged at different positions along the container bag. Each sealing ring independently seals a specific section, with the first sealing ring sealing the upper end, the second sealing ring sealing the lower end, and the third sealing ring providing additional sealing. This segmentation allows the system to achieve comprehensive sealing effectiveness while maintaining operational simplicity through independent activation of each ring.

Inventive Principle:
Principle #1Segmentation

2Object-affected harmful factors

If three sealing rings are arranged coaxially to seal the container bag, then particle containment is improved, but ease of operation deteriorates

Engineering Contradiction:
Core Design Contradiction:
Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The sealing rings are designed to be selectively activatable rather than permanently engaged. The first sealing ring can be activated to seal the upper end of the container bag during the emptying process, while the second and third sealing rings remain inactive until needed. This dynamic activation approach allows operators to engage only the necessary sealing rings for each operational phase, simplifying operation while maintaining effective particle containment when sealing is required.

Inventive Principle:
Principle #15Dynamics

3Object-affected harmful factors

If sealing rings are positioned to seal both upper and lower ends of container bag, then particle containment is improved, but manufacturing complexity increases

Engineering Contradiction:
Core Design Contradiction:
Object-affected harmful factorsVSEase of manufacture

Solution Approach 1:

The sealing system is divided into three separate sealing rings (first, second, and third sealing rings) arranged at different positions along the container bag. Each sealing ring independently seals a specific section, with the first sealing ring sealing the upper end, the second sealing ring sealing the lower end, and the third sealing ring providing additional sealing. This segmentation allows the system to achieve comprehensive sealing effectiveness while maintaining operational simplicity through independent activation of each ring.

Inventive Principle:
Principle #1Segmentation

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 configuration allows for efficient and cost-effective emptying of bulk goods into the container bag without contaminating the surrounding air, ensuring a tight seal after the decanting process, even for small particles, and allows for easy adjustment and activation of the sealing rings.

Implementation Method 1

the pressurizable sealing rings are sealing rings that can be pressurized with compressed air

Methodology Applied
Scientific EffectCompressed air pressure: Pressurisation

Data Source

PatentEP3725694B1Device for emptying bulk material from a container in a sloped container bag
Publication Date: 2024.08.28
  • EP3725694B1 patent drawingFigure 1
  • EP3725694B1 patent drawingFigure 1a
  • EP3725694B1 patent drawingFigure 2

AI summary

The invention relates to a device for emptying bulk materials from a container (25) into a tubular container bag (4), which is received in a receiving part or collection housing (9) and whose upper end can be closed after the transfer process, while the second or lower end of the container bag (4) can be closed by means of at least three sealing rings (1, 2, 3) arranged coaxially with respect to a central axis of the collection housing (9) in such a way that, in particular, even very small particles are not released into the ambient air. The object of the invention is to manufacture the device in a simple and cost-effective manner and to design the device for emptying bulk materials from a container into a tubular container bag in such a way that the ring seals used for this purpose are easy to activate and/or adjust.so that even the smallest particles largely do not enter the ambient air. According to the invention, this problem is solved by the fact that the individual pressurizable sealing rings (1, 2, 3) are each arranged offset from one another, and the upper or first sealing ring (1) in the filling direction is in contact with a cover or ring flange (5), and the middle or second sealing ring (2) with a nozzle or connecting part (14) for the collection housing (9), and the third, offset sealing ring (3) located below it is in contact with the cover or ring flange (5), wherein the tubular part of the container bag (4) is positioned between one side of the third or lower sealing ring (3) and the opposite wall of the receiving part or collection housing (9).then around a first rib (29) and an adjacent groove (28) and finally between a wall part (48) of the nozzle or connection part (14) or the wall of the collection housing (9) of the nozzle (14) or connection part for the collection housing and the first sealing ring (1) provided in the cover or ring flange (5).