Flexible Bag Emptying Device with Rotating Draining Means

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Solution Overview

Problem

Existing systems for emptying flexible bags containing fluids are often complex and costly, leading to substantial economic losses due to inefficiencies in fluid extraction, as they struggle to effectively remove fluid trapped between the bag's folds and the discharge outlet.

Innovation Solution

A device comprising traction means and draining means, where the draining means are rotatably connected to the traction means, allowing for the stretching and circulation of the bag through a winch and rotary rollers, with adjustable positioning and actuation mechanisms to facilitate efficient fluid extraction, including motorized or manual operation and adaptive structure for various container sizes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If complex electric, pneumatic or hydraulic operating elements are incorporated to empty flexible bags, then the emptying effectiveness is improved, but the device complexity and implementation costs increase substantially

Engineering Contradiction:
Improveemptying effectivenessVSAvoidsystem complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The flexible bag itself serves as the operating element through its inherent properties. The bag's flexibility and the pressure differential created during emptying automatically drive the fluid discharge without requiring external electric, pneumatic, or hydraulic systems. The bag's own structure and the pressure gradient enable the emptying process

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The invention extracts and eliminates complex operating elements from the system. By removing electric motors, pneumatic actuators, and hydraulic systems, the solution achieves emptying effectiveness through simpler mechanical means using the bag's inherent flexibility and gravity-assisted flow

Inventive Principle:
Principle #2Taking out (Extraction)

2Loss of substance

If complex systems with multiple operating elements are used to extract fluid from bag folds, then the fluid extraction completeness is improved, but the maintenance and operational costs increase

Engineering Contradiction:
Improvefluid extraction completenessVSAvoidmaintenance cost
Core Design Contradiction:
Loss of substanceVSEase of repair

Solution Approach 1:

The system uses the bag's own flexibility and the natural pressure differential to complete fluid extraction from folds. The mechanical action of inverting and compressing the bag, combined with gravity and pressure gradient, automatically extracts residual fluid without requiring complex maintenance-prone systems

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The invention employs simple, inexpensive mechanical components that can be easily replaced if needed. The system avoids expensive, complex operating elements in favor of basic mechanical structures with moving parts that are inexpensive to manufacture and replace

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

3Device complexity

If traditional emptying systems are used, then the device simplicity is maintained, but the amount of product disposed of increases due to incomplete emptying

Engineering Contradiction:
Improvesystem simplicityVSAvoidproduct waste
Core Design Contradiction:
Device complexityVSLoss of substance

Solution Approach 1:

The system dynamically inverts and repositions the flexible bag during the emptying process. By continuously changing the bag's orientation and applying compressive forces through rollers, the system extracts fluid from folds that would otherwise remain trapped, achieving complete emptying while maintaining mechanical simplicity

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The emptying process employs periodic cycles of inversion, compression, and discharge. The bag is repeatedly inverted and compressed by rollers in a cyclic manner, with each cycle extracting additional fluid from different portions of the bag, ensuring complete emptying through repeated mechanical action

Inventive Principle:
Principle #19Periodic action

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

Enables the simple, quick, and effective extraction of fluids from flexible bags, minimizing waste and adapting to different container geometries, thereby reducing operational costs and improving efficiency in fluid product utilization.

Implementation Method 1

traction means comprise a winch capable of stretching and winding the bags around it

Methodology Applied
Scientific EffectMechanical tension: Tension

Implementation Method 2

the draining means comprise a plurality or carousel of rotary rollers arranged and mutually enabled for tightly passing and circulating the bag between them

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentUS11939101B2Device for emptying flexible bags containing fluids
Publication Date: 2024.03.26 LIQUIDPACK SL
  • US11939101B2 patent drawing
  • US11939101B2 patent drawing
  • US11939101B2 patent drawing

AI summary

Device for emptying flexible bags containing fluids, comprising traction means and draining means, the draining means being physically connected to the traction means by means of positioning means such that they are rotatably movable around the traction means and the traction means and the draining means being arranged and mutually enabled to stretch a flexible bag from the traction means and simultaneously to pass and circulate the bag through the draining means.