Quantitative Catalyst Supply Device for Precise Slurry Coating
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Solution Overview
Problem
Existing catalyst supply devices fail to quantitatively coat catalyst slurry on monolithic supports, leading to excessive slurry supply and inefficiencies in coating processes.
Innovation Solution
A quantitative catalyst supply device featuring valve units and a head mechanism that precisely controls the amount of catalyst slurry supplied through a variable container, ensuring almost complete coating with minimal slurry discharge, utilizing a cylinder-driven supply pipe system with sealing members to prevent leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If catalyst slurry is supplied in excess to ensure complete coating of monolithic support channels, then coating coverage is improved, but slurry waste and recirculation problems occur
Solution Approach 1:
The system pre-calculates and pre-fills a supply pipe with the exact amount of catalyst slurry needed for coating before the coating process begins. The supply pipe acts as a pre-measured reservoir that delivers precisely the required quantity, eliminating both excess slurry application and the need for recirculation systems.
Solution Approach 2:
The supply pipe serves as an intermediary component between the slurry source and the monolithic support. It temporarily stores and transports the exact required amount of slurry, acting as a buffer that ensures precise dosage delivery without direct connection between the slurry tank and the coating point.
2Device complexity
If a simple dip coating method is used, then device complexity is reduced, but quantitative control of catalyst slurry supply is lost
Solution Approach 1:
The coating system is segmented into distinct functional components: a supply pipe for precise slurry delivery, a coating head for controlled application, and a separation from the main slurry tank. This segmentation allows each component to perform its specific function optimally while maintaining overall system simplicity.
Solution Approach 2:
Instead of using a full dip coating approach that requires complex control systems, the invention uses a partial action approach where only the necessary amount of slurry is supplied through the supply pipe. This partial supply method achieves quantitative control without the complexity of complete immersion and recirculation systems.
Data Source
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AI summary
The present invention provides a quantitative catalyst supply device that supplies a predetermined amount of catalyst slurry through an injection port formed through a container bottom. The quantitative catalyst supply device includes: an extendible supply pipe connected to a hopper and filled with catalyst slurry; a head connected to the supply pipe and supplying catalyst slurry to the injection port at the container bottom; a cylinder connected to a side of the supply pipe and supplying a predetermined amount of catalyst slurry through the head; and valve units disposed in an upper portion and a lower portion of the supply pipe spaced from the cylinder and opened or closed by operation of the cylinder.