Brush Drop-Bar Sealing for Furnace Pallet Car Gap Leakage
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Solution Overview
Problem
Machines for thermal treatment of bulk material face issues with dust and hazardous gas leakage due to gaps between pallet cars and the furnace, with existing sealing systems lacking in efficiency and durability.
Innovation Solution
A sealing system comprising drop bars with brushes that cover the gap between the furnace support structure and pallet cars, providing a flexible and durable seal that adjusts to uneven surfaces and withstands high temperatures, combined with a further sealing system to enhance overall sealing efficiency and prevent gas leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a gap is defined between the pallet cars and the furnace support structure, then the pallet cars can travel through the furnace freely, but dust and hazardous gases can escape and tramp air can enter the furnace
Solution Approach 1:
The patent employs flexible sealing elements including brushes and lip seals that can deform and adapt to the moving pallet cars while maintaining contact. These flexible sealing components are mounted on the stationary furnace support structure and flexibly seal against the lateral sides of the pallet cars, preventing dust and gas leakage while allowing free movement of the pallet cars through the furnace.
2Object-affected harmful factors
If a sealing system is introduced to close the gap, then dust and gas leakage is reduced, but the sealing efficiency and durability are insufficient with existing solutions
Solution Approach 1:
The patent utilizes composite sealing structures combining different materials with complementary properties. The sealing system integrates brushes (typically made of耐磨 materials) with lip seals and flexible membranes, creating a multi-material composite solution that enhances both sealing efficiency and durability. This composite approach allows each material to contribute its strengths: brushes for initial contact and particle blocking, lip seals for tight sealing, and flexible membranes for adapting to surface irregularities.
Solution Approach 2:
The sealing system is designed with dynamic characteristics, where sealing elements can move and adjust during operation. The brushes are mounted to allow lateral movement, the lip seals incorporate flexible bellows structures that expand and contract with pallet car motion, and the entire sealing assembly is designed to accommodate thermal expansion and contraction. This dynamic design maintains effective sealing under varying operational conditions while preserving pallet car mobility.
3Object-affected harmful factors
If a rigid sealing structure is used to seal the gap, then sealing coverage is improved, but adaptability to uneven surfaces and thermal conditions is reduced
Solution Approach 1:
The sealing system is designed with dynamic characteristics, where sealing elements can move and adjust during operation. The brushes are mounted to allow lateral movement, the lip seals incorporate flexible bellows structures that expand and contract with pallet car motion, and the entire sealing assembly is designed to accommodate thermal expansion and contraction. This dynamic design maintains effective sealing under varying operational conditions while preserving pallet car mobility.
Solution Approach 2:
The patent employs flexible sealing elements including brushes and lip seals that can deform and adapt to the moving pallet cars while maintaining contact. These flexible sealing components are mounted on the stationary furnace support structure and flexibly seal against the lateral sides of the pallet cars, preventing dust and gas leakage while allowing free movement of the pallet cars through the furnace.
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 solution effectively seals gaps, reducing dust and gas leakage, improving fuel and power efficiency by up to 10%, and allowing for easy maintenance, while maintaining a durable and flexible seal across varying conditions.
Implementation Method 1
each drop bar of the one or more drop bars includes a brush arranged on the drop bar such that the brush is configured to be in engagement with the common engagement surface
Data Source
AI summary
The disclosure relates to a machine for thermal treatment of bulk material, comprising, a stationary furnace which presents a support structure, and a plurality of pallet cars traveling through the furnace, said plurality of pallet cars together defining, at a lateral side thereof, a common engagement surface which extends through the furnace, wherein a gap is defined between the support structure of the furnace and the common engagement surface, said gap having a gap length, the machine further comprising: a sealing system comprising: one or more drop bars, wherein each drop bar of the one or more drop bars includes a brush arranged on the drop bar such that the brush is configured to be in engagement with the common engagement surface such that the one or more drop bars covers the gap over at least parts of the gap length.