Dosing Flap Drive Unit for Bulk Material Emptying
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing bulk goods container emptying stations face challenges in precise dosing due to clogging issues with small opening angles, leading to overdosing and the need for costly pneumatic vibration arrangements, which also reduce the service life of dosing devices.
Innovation Solution
A dosing system where the dosing flap is controlled by a drive unit located at the emptying station, connected to the bulk container only during emptying, with a crescent-shaped gap created by rotating the flap disc, allowing for gravimetric flow and optional vibration using a ball vibrator to prevent clogging and ensure precise dosing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a dosing flap with small opening angle is used for fine dosing, then dosing precision is improved, but the opening becomes blocked by bridging between grains leading to clogging
Solution Approach 1:
A vibration device is integrated into the dosing flap mechanism to generate vibrations that prevent material bridging and clogging in the small opening gap, enabling reliable fine dosing without blocking
Solution Approach 2:
The patent introduces an intermediate vibration mechanism between the dosing flap and the bulk material to eliminate bridging effects, allowing the flap to maintain small openings for precision while vibrations ensure continuous flow
2Reliability
If a pneumatic vibration arrangement is provided on each bulk container, then dosing reliability is improved, but costs increase significantly
Solution Approach 1:
The vibration function is extracted from individual container requirements and consolidated into a centralized dosing station mechanism, eliminating the need for pneumatic arrangements on each container while maintaining dosing reliability
Solution Approach 2:
The dosing station is designed as a universal system that handles multiple container types with a single vibration mechanism, reducing overall system complexity and cost
3Measurement precision
If the drive unit is arranged in the flow of bulk material, then control precision is improved, but service life of the drive unit is reduced
Solution Approach 1:
The drive unit is isolated from direct contact with bulk material flow through an intermediate coupling mechanism, allowing precise control while protecting the drive unit from material exposure and extending its service life
4Measurement precision
If a dosing mechanism is provided at the emptying station, then dosing precision is improved, but cleaning time increases
Solution Approach 1:
The dosing mechanism is extracted from the stationary emptying station and integrated with the movable container closure system, allowing the dosing components to be removed with the container rather than cleaned at the station
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 precise and controlled dosing without the need for expensive vibration arrangements on each container, reducing cleaning time and extending the service life of dosing devices, while maintaining high dosing accuracy even with poorly flowing materials.
Implementation Method 1
a vibration device, in particular a ball vibrator, with which at least the flap disc can be set in vibration
Implementation Method 2
allowing for gravimetric flow and optional vibration using a ball vibrator to prevent clogging
Data Source
Figure 1
Figure 2a~2b
Figure 2c
AI summary
The station has a drive unit (302) for driving a dosing flap (110) provided in a material receiving reservoir of a bulk material container. Control electronics controls the drive unit, where the control electronics stays in signal communication with the drive unit. The drive unit is coupled to the dosing flap only during the filling or emptying process. A carriage (308) is displaceably arranged on a rail system (310). The carriage carries the drive unit and a coupling unit (306) and is displaceable, such that the coupling unit connects a drive axis of the flap with the drive unit. An independent claim is also included for a method for controlled emptying of bulk material containers.