Reciprocating Slat Conveyor Labyrinth Seal Design
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Solution Overview
Problem
Reciprocating slat conveyors face challenges in sealing effectiveness against fine abrasive particles and liquids, as rigid seals may not provide optimal resistance and sealing capacity.
Innovation Solution
The design features alternating slats with a seal located between the upright and overhanging wall sections, forming a labyrinth seal that is protected and enhanced by a resistance channel and accumulation channel, along with flexible legs to prevent particle passage, ensuring effective sealing against abrasive particles and liquids.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If rigid seals are used between slats, then wear resistance is improved, but sealing capacity against fine abrasive particles and liquids deteriorates
Solution Approach 1:
The seal is divided into multiple functional segments: a rigid support structure providing wear resistance, a flexible sealing element for particle and liquid containment, and a protected labyrinth structure. This segmentation allows each component to specialize in its optimal function - the rigid part handles wear while the flexible part handles sealing.
Solution Approach 2:
The seal assembly combines different material properties by integrating rigid structural elements with flexible sealing materials. The composite structure leverages the wear resistance of rigid materials while incorporating the adaptability and sealing effectiveness of flexible materials, resolving the contradiction between durability and sealing performance.
2Reliability
If a seal is provided between slats to prevent particle passage, then sealing effectiveness is improved, but slat sliding movement resistance increases
Solution Approach 1:
The seal employs flexible sealing elements that can deform and adapt to the movement between slats. These flexible components maintain continuous sealing contact while accommodating the reciprocating motion, preventing particle passage without creating excessive friction or resistance to slat movement.
Solution Approach 2:
The seal design incorporates dynamic characteristics where the sealing elements can move and adjust with the slats during reciprocating motion. This dynamic adaptation allows the seal to maintain effectiveness throughout the motion cycle while minimizing interference with the sliding movement.
3Reliability
If the seal is exposed to abrasive particles, then sealing function is maintained, but seal wear increases and reliability decreases
Solution Approach 1:
The protected labyrinth structure acts as an intermediary barrier between the abrasive particles and the seal. This intermediate structure redirects particles away from the seal's critical sealing surfaces, allowing the seal to perform its sealing function while being protected from direct particle contact that would cause wear.
Solution Approach 2:
The design incorporates protective structures in advance of the seal position to intercept and redirect abrasive particles before they reach the seal. This preemptive protection measures prevents particle-induced wear before it can compromise the seal's service life.
Data Source
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AI summary
A reciprocating slat conveyor (10) comprising a support structure (11, 13), multiple slidable parallel first and second slats (50, 80) supported by the support structure (11, 13), wherein the first slats (50) comprise a horizontal upper wall section (51) and a vertically upright end wall section (65) along one of the longitudinal sides of the upper wall section (51), and wherein the second slats (80) comprise a horizontal upper wall section (81) and a vertically upright wall section (90) along one of the longitudinal sides of the upper wall section (81), wherein the upright wall section (90) outwardly merges into an overhanging wall section (100) that extends over the upright end wall section (65) of the adjacent first slat (50), wherein the overhanging wall section (100) merges into a vertically downwardly pending end wall section (110) that extends aside the upright end wall section (65) of the adjacent first slat (50), and a seal (200) arranged between the first and second slats (50, 80).