Slide Gate Metering Control for Uniform Bulk Material Discharge
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Solution Overview
Problem
Existing metering devices for bulk materials suffer from inefficiencies in adjusting the dumping height and feed rate, leading to inaccurate measurements and non-uniform discharge behavior, requiring manual adjustments that disrupt production and hinder optimal operation.
Innovation Solution
A motor-operated actuator adjusts the slide gate position to control the outlet cross-section automatically, allowing for dynamic adjustments during operation based on various parameters such as feed rate, conveying velocity, and hopper fill level, using a control device with multiple controllers to optimize metering performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a manual slide gate is used to adjust the outlet cross-section, then the device can be adjusted at different settings, but the metering device must be stopped for each adjustment, reducing productivity
Solution Approach 1:
The patent applies the dynamics principle by replacing the static manual slide gate with a dynamic motor-operated actuator that can automatically adjust the outlet cross-section during operation. The actuator enables continuous adjustment without stopping the conveying device, transforming the system from static to dynamic operation and resolving the contradiction between adjustability and productivity.
Solution Approach 2:
The patent applies mechanics substitution by replacing the manual mechanical adjustment system with an automated motor-operated actuator. This substitution eliminates the need for manual intervention and continuous stopping, allowing the outlet cross-section to be adjusted automatically during operation, thereby maintaining productivity while improving adaptability.
2Ease of operation
If the outlet cross-section is kept constant during operation, then the device is simple to operate, but the feed rate can only be adjusted via conveying velocity, limiting adaptability
Solution Approach 1:
The patent applies dynamics by enabling the outlet cross-section to be dynamically adjusted during operation through the motor-operated actuator. This allows the feed rate to be controlled by adjusting either the conveying velocity or the outlet cross-section, providing dual control mechanisms that enhance adaptability while maintaining ease of operation through automated control.
Solution Approach 2:
The patent applies parameter changes by introducing the outlet cross-section as a controllable parameter that can be dynamically adjusted during operation. Along with conveying velocity, this provides two independent parameters for feed rate control, significantly enhancing the system's adaptability to different operating conditions while keeping the operation simple through automated parameter adjustment.
3Productivity
If a motor-operated actuator is used to adjust the slide gate position, then the outlet cross-section can be adjusted during operation, but the device complexity increases
Solution Approach 1:
The patent applies mechanics substitution by replacing the simple manual slide gate mechanism with a motor-operated actuator system. Although this increases structural complexity, it enables continuous operation and automated adjustment, significantly improving productivity. The actuator system, while more complex, allows for automated control that compensates for the added complexity through intelligent operation.
4Measurement precision
If the dumping height is adjusted manually, then the measurement accuracy can be optimized, but the measurement process is interrupted, reducing productivity
Solution Approach 1:
The patent applies dynamics by enabling the dumping height to be dynamically adjusted during operation through the motor-operated actuator. This allows the measurement process to continue without interruption while maintaining optimized measurement accuracy through continuous adjustment of the outlet cross-section, resolving the contradiction between measurement precision and productivity.
Solution Approach 2:
The patent applies the continuity of useful action principle by enabling the dumping height adjustment to occur continuously during operation rather than requiring interruptions. The motor-operated actuator allows the outlet cross-section to be adjusted while the conveying device operates, ensuring that measurement accuracy is optimized without disrupting the continuous measurement process, thereby maintaining both precision and productivity.
Data Source
AI summary
A metering device for discharging bulk material at a discharge opening, with a hopper for storing the bulk material, and a conveying device for conveying the bulk material from the hopper to the discharge opening. The hopper has an outlet opening through which the bulk material can be conveyed out of the hopper by the conveying device, and a slide gate, the position of which determines an outlet cross-section of the outlet opening. The metering device has a motor-operated actuator for adjusting the outlet cross-section, a control device for controlling the metering device and a motor-operated actuator for adjusting the slide gate, which is controlled via the control device as a function of a target feed rate.