Bulk Bag Opening Device With Swing Unit For Powder Discharge
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Solution Overview
Problem
Bulk bags containing powders face challenges in complete discharge due to low specific gravity, with contents often getting stuck between seams or in corners, leading to inefficient emptying and potential moisture-related defects.
Innovation Solution
A bulk bag opening device with a swing unit, comprising a transfer unit, cutting unit, and discharge unit, equipped with a length adjustment mechanism, grip means, and optional vibrator, which cuts the bag, adjusts lifting speed, and swings the bag to ensure thorough content removal with minimal dust generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the bulk bag is cut to transfer contents, then the contents can be discharged to the hopper, but powder products with low specific gravity get caught between seams or in corners and cannot be discharged completely
Solution Approach 1:
A vibrator is attached to the swing unit to generate mechanical vibrations that shake the bulk bag during the swinging motion. This vibration helps dislodge powder products that are stuck between seams or in corners, enabling complete discharge of the contents to the hopper and eliminating residual material in the bulk bag.
2Loss of substance
If the bulk bag is swung to remove remaining contents, then powder products can be completely discharged, but the device complexity increases with additional swing unit components
Solution Approach 1:
The swing unit integrates multiple functions into a single mechanism: the actuator provides both the swinging motion and supports the vibrator attachment. The grip means simultaneously holds the bulk bag and transmits vibrational energy during swinging. This merging approach achieves complete powder discharge while minimizing additional structural complexity.
3Productivity
If the lifting speed is increased to transfer bulk bag quickly, then productivity improves, but dust generation increases during content discharge
Solution Approach 1:
The transfer unit operates with periodic speed variation: it lifts the bulk bag quickly to transfer it efficiently, then slows down the lifting speed specifically during the content discharge phase. This periodic speed adjustment maintains high productivity while minimizing dust generation when the bag is opened and contents are flowing to the hopper.
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 effectively removes remaining contents from bulk bags by gripping and shaking the bag, facilitating complete discharge and reducing dust, particularly advantageous for powders, enhancing the reuse of bulk bags.
Implementation Method 1
a grip means provided on an end of the length adjustment means to grip the bulk bag, thereby shaking and emptying the contents remaining in the bulk bag
Implementation Method 2
The swing unit may be equipped with a vibrator
Data Source
AI summary
Proposed is a bulk bag opening device including a transfer unit that transfers a bulk bag, a cutting unit that cuts the transferred bulk bag, and a discharge unit that discharges contents to a hopper. The bulk bag opening device includes a swing unit having a length adjustment means provided outside the bulk bag to be spaced apart therefrom by a predetermined distance and accessing to the bulk bag, and a grip means provided on an end of the length adjustment means to grip the bulk bag, thereby shaking and emptying the contents remaining in the bulk bag.