Compact Dedusting Apparatus with Stainless Steel Metering Device
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Solution Overview
Problem
Conventional dedusting apparatuses, such as the Uniceltec Model C-20, face issues with wear of urethane metering devices, carryover of particulate material with discharged dust, and inability to remotely discharge collected dust and debris, which compromises clean room operations and increases production costs due to contamination and equipment wear.
Innovation Solution
A compact dedusting apparatus with a stainless steel conical, fluted metering device and an electro-magnetic ionization system, utilizing a Venturi zone and vacuum generator to separate dust from particulate material, and allowing remote dust collection without affecting air flow, while preventing particulate material carryover through adjustable design features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a urethane metering device is used in conventional dedusting apparatus, then the device can control material flow, but the metering device wears quickly and introduces additional dust into the particulate material
Solution Approach 1:
The patent changes the material parameter of the metering device from urethane to stainless steel, which fundamentally alters the wear characteristics. The stainless steel conical fluted member is significantly more resistant to wear from particulate material, eliminating the dust generation problem while maintaining flow control capability
Solution Approach 2:
The patent employs a stainless steel construction for the metering device that combines durability with appropriate surface properties. The stainless steel material provides both mechanical strength for flow control and resistance to wear, creating a composite solution that addresses both productivity and reliability requirements
2Object-affected harmful factors
If dust and debris are discharged from the dedusting apparatus, then contaminants are removed from particulate material, but particulate material carries over with the dust discharge
Solution Approach 1:
The patent applies different structural qualities to different zones within the discharge system. The Venturi zone creates a specific flow pattern with accelerated air that preferentially carries dust and debris, while the conical geometry of the metering device and chamber design creates a separation effect that allows cleaned particulate material to settle and discharge separately
Solution Approach 2:
The patent segments the discharge process into distinct zones: the Venturi zone for dust removal, a transition zone for flow stabilization, and a separate product discharge opening for cleaned material. This segmentation prevents mixing of dust-laden air with cleaned particulate material, eliminating carryover losses
3Object-affected harmful factors
If dust collection is performed at the dedusting apparatus location, then dust and debris are captured, but clean room standards are compromised and production downtime increases
Solution Approach 1:
The patent extracts the dust collection function from the main dedusting apparatus by providing a separate dust collection apparatus that can be remotely located. The dust-laden air is conveyed through a conduit to a remotely positioned dust collector, separating the contaminant capture function from the clean room environment while maintaining continuous operation
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 apparatus effectively prevents dust introduction during cleaning, reduces wear, and enables remote dust discharge, maintaining clean room standards and minimizing production downtime and costs by ensuring high-quality particulate material processing.
Implementation Method 1
an electro-magnetic ionization system, utilizing a Venturi zone and vacuum generator to separate dust from particulate material
Implementation Method 2
utilizing a Venturi zone and vacuum generator to separate dust from particulate material
Implementation Method 3
utilizing a Venturi zone and vacuum generator to separate dust from particulate material
Data Source
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AI summary
A compact dedusting apparatus (10) induces air flow through the housing (12) by a vacuum generator (30) mounted within the housing. The discharge of dust and debris can be passed through a conduit (33) to a remote location without losing air flow velocity. The metering device (15) is formed from stainless steel and mounted on a spring-loaded mounting plate (50) to permit vertical movement of the metering device when a jam of the particulate material is encountered. The metering device (15) can be driven by a low torque stepper motor (17) operable at selectively variable speeds to control the flow rate of the particulate material. The discharge transition is formed with an enlarged cross-sectional area compared to the shape of the Venturi zone (26) so that carryover pellets can be returned to the product flow instead of being lost with the dirty air discharge (33).