Bidirectional Scraper Reclaimer for Stockyard Material Handling

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing bulk material reclaiming systems face inefficiencies due to limited directional scraping capabilities of scraper reclaimers, increased energy consumption when material levels are low, and the need for separate blending bins, leading to lengthy processes and material blockages.

Innovation Solution

A stockyard joint reclaiming system with a bidirectional scraper mechanism, an inner feeder, and inner and outer output conveyors that allow flexible reclaiming modes, including vertical and horizontal operations, and integrated storage and blending capabilities, reducing energy consumption and eliminating the need for separate blending bins.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the scraper mechanism is inclined downwards to scrape material at low material levels, then the scraper can reach the material surface, but the scraper needs to lift material against gravity causing increased driving power consumption

Engineering Contradiction:

Improvescraper ability to reach materialVSAvoiddriving power consumption

Core Design Contradiction:

Ease of operationVSUse of energy by moving object

Solution Approach 1:

The patent introduces an inner feeder positioned below the stockyard that conveys material upward to a discharge port above the material level. This inverts the traditional approach by having material move upward through gravity feed rather than being lifted by the scraper, eliminating the energy-consuming lifting operation while maintaining the scraper's ability to reach low material levels.

Inventive Principle:

Principle #13The other way round (Inversion)

2Adaptability or versatility

If a separate blending bin is used for bulk material blending, then proportioning operation can be performed, but the technological process becomes long and material blockage risk increases

Engineering Contradiction:

Improveblending capabilityVSAvoidtechnological process length

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

The patent combines the storage function (stockyard) and blending function (blending bin) into a single integrated system. The inner feeder is positioned within the stockyard structure, allowing material to be stored and then directly fed for blending without transfer to a separate facility, thus eliminating the lengthy transfer process and reducing material blockage risk.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The inner feeder serves multiple functions: it acts as a storage outlet, a conveying mechanism, and a blending feed source. This multi-functional design eliminates the need for separate dedicated blending equipment and process steps, streamlining the overall technological process.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Device complexity

If the scraper reclaimer uses single-direction scraping, then the structure remains simple, but the number of output lines is limited

Engineering Contradiction:

Improvescraper structure simplicityVSAvoidoutput line quantity

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The patent adds a vertical dimension to the output system by positioning the inner feeder and its discharge port at different elevation levels within the stockyard. This allows material to be conveyed to multiple discharge points (inner and outer output conveyors) at different heights and locations, increasing output line quantity without complicating the horizontal scraper structure.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

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 system enhances reclaiming efficiency by providing flexible reclaiming lines, reducing energy consumption, and integrating storage and blending, thereby minimizing production and operational costs.

Implementation Method 1

The chain moves forwards or backwards under the action of a driving device to drive the scraper to push materials to a corresponding discharging port

Methodology Applied

Scientific EffectMechanical Force: Mechanical Force

Implementation Method 2

the materials are conveyed to the inner output conveyor under the action of own gravity through the operation of the inner feeder

Methodology Applied

Scientific EffectGravity: Gravitation

Data Source

PatentEP3366619B1Stockyard joint reclaiming system and method

Publication Date: 2021.01.06 CISDI ENGINEERING CO LTD

Figure 1
Figure 2
Figure 3~4

AI summary

The present invention provides a stockyard joint reclaiming system which includes an outer output conveyor (6) and a scraper reclaimer (1) provided with a scraper mechanism (2). The stockyard joint reclaiming system also includes an inner feeder (4) and an inner output conveyor (5) arranged below a stockpile. The scraper mechanism includes a chain (7) and a scraper (8) installed on the chain. The chain moves forwards or backwards under the action of a driving device to drive the scraper to push materials (3) to a corresponding discharging port. In the present invention, the scraper mechanism drives the scraper to move through forward or reverse operation of the chain for pushing the materials to the corresponding output conveyor; and a reclaiming line can be selected as required. A reclaiming mode is flexible, and more output lines are available. When the material level is lower than a horizontal position, the scraper is driven to move through the reverse operation of the chain to push the materials to an upper part of the inner feeder for realizing reclaiming, thereby reducing unnecessary energy consumption and effectively guaranteeing the reclaiming capability of the scraper reclaimer.