Cellular Rotary Valve Shearing Wall Agglomerate Crushing

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Solution Overview

Problem

Existing cellular wheel sluices face issues with large-volume agglomerates being unable to enter the chamber due to volume constraints and suffer from wear-related problems with detachable cutting inserts, leading to loose fastenings and metal particle contamination, as well as the need for frequent replacements.

Innovation Solution

A shearing wall with angled shearing surfaces integrated into the housing of the rotary valve's inlet, eliminating the need for detachable cutting inserts and providing a solid, wear-resistant crushing mechanism that ensures reliable operation with minimal wear and no loose parts.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If detachable cutting inserts are used to crush agglomerates, then the crushing function is achieved, but the fastening becomes loose over time and cutting edges wear away

Engineering Contradiction:

Improvecrushing function reliabilityVSAvoidservice life of cutting inserts

Core Design Contradiction:

ReliabilityVSDuration of action of moving object

Solution Approach 1:

The cutting function is merged with the housing structure by integrating fixed cutting edges directly into the housing wall. This eliminates detachable cutting inserts and their fastening systems, creating a permanent, wear-resistant crushing mechanism that cannot loosen during operation.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

Instead of using detachable inserts that need to be secured to the housing, the invention inverts the approach by making the cutting elements an integral part of the housing structure itself. The housing wall directly forms the cutting surfaces, eliminating the need for separate fastening components.

Inventive Principle:

Principle #13The other way round (Inversion)

2Productivity

If static knives with cutting edges are used, then agglomerates can be crushed, but metal particles are introduced into the conveyed material

Engineering Contradiction:

Improvecrushing capabilityVSAvoidmetal particle contamination

Core Design Contradiction:

ProductivityVSObject-generated harmful factors

Solution Approach 1:

The housing wall is equipped with fixed cutting edges made from wear-resistant materials that are integrated into the housing structure. This composite construction combines the structural integrity of the housing with the cutting capability of specialized materials, enabling effective crushing without the use of detachable metal inserts that could contaminate the material.

Inventive Principle:

Principle #40Composite materials

3Ease of operation

If cutting inserts are installed in the inlet connection, then large-volume agglomerates can be comminuted, but the inserts require readjustment and replacement

Engineering Contradiction:

Improveagglomerate comminutionVSAvoidmaintenance time for cutting inserts

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

The invention inverts the conventional approach by eliminating detachable cutting inserts entirely. Instead, the housing wall itself forms fixed cutting surfaces that are permanently integrated into the structure, eliminating the need for readjustment, tightening, or replacement of cutting elements during operation.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The housing structure serves its own cutting function through integrated fixed cutting edges. The housing wall directly performs the comminution task without requiring separate, serviceable cutting components, making the system self-sufficient and eliminating maintenance activities related to cutting insert management.

Inventive Principle:

Principle #25Self-service

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

This design allows for efficient crushing of large agglomerates with reduced wear and no metal particle contamination, ensuring a long service life and preventing damage to the rotary valve, as the shearing surfaces are an integral part of the housing, eliminating the need for readjustment or replacement.

Implementation Method 1

a shearing wall is arranged in the inlet area of the cell wheel sluice, which is designed as a shearing wall in the running direction of the cell wheel, which forms at least two shearing surfaces arranged at an angle to one another

Methodology Applied

Scientific EffectShear stress: Shear Stress

Data Source

PatentEP2168893B1Cellular rotary valve with grinding device

Publication Date: 2013.10.30 ZEPPELIN SYSTEMS GMBH

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AI summary

Rotary valve for conveying bulk materials of all kinds with a comminution insert for comminuting bulk material agglomerates (29), which are conveyed into the inlet of the rotary valve and pass through the comminution insert (10) on which devices for comminuting the bulk material agglomerates (29) are arranged, wherein the comminution devices are formed from at least one shear wall (20) which forms at least two shear surfaces (21, 22) arranged at an angle to each other, which widen conically upwards in the inlet direction (11) of the bulk material and meet approximately in the middle in the area of at least one feed edge (23), wherein the longitudinal extent of the feed edge (23) widens conically in the inlet direction (11).