Filtration Hatch Arrangement for Mining Cake Discharge
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Solution Overview
Problem
Existing liquid filtration systems face challenges in efficiently processing large volumes of mining tailings and bulk mining products, which contain significant water that can be recycled, requiring an improved apparatus for effective filtration and cake discharge.
Innovation Solution
A liquid filtration apparatus comprising a series of upright vertical filter plates with filter chambers, equipped with a hatch arrangement for controlled discharge and pressure application, allowing for efficient filtration and cake formation, and a flushing system for cleaning, enabling the separation of liquid from solids and facilitating the reuse of water.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If pressure is applied to material in filter chambers to press out liquid and form filter cake, then filtration efficiency is improved, but the force required to operate the hatch arrangement for discharge increases
Solution Approach 1:
The hatch arrangement is separated from the filter chamber structure, allowing the filter cake to be discharged through a dedicated discharge opening that is independent of the filter chamber closure. This enables the filter chamber to maintain full pressure for efficient filtration while the hatch can be opened with reduced force to allow gravity-driven discharge of the filter cake.
2Manufacturing precision
If the bottom discharge opening is kept closed during filtration, then filter cake formation is improved, but the time required to discharge the filter cake increases
Solution Approach 1:
The discharge system is segmented into a bottom discharge opening and a hatch arrangement, allowing the bottom opening to remain closed during filtration for proper filter cake formation, while the hatch can be quickly opened to enable rapid discharge. This segmentation allows independent control of filtration and discharge functions.
3Ease of operation
If the hatch arrangement is designed for easy opening, then ease of operation is improved, but the sealing effectiveness during pressure filtration deteriorates
Solution Approach 1:
A sealing mechanism acts as an intermediary between the hatch and the filter chamber, providing reliable sealing during pressure filtration while allowing the hatch to be easily opened when discharge is required. The seal ensures that pressure is maintained during filtration but does not create excessive resistance when the hatch is opened for discharge.
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 apparatus effectively separates liquid from solids in mining materials, allowing for the formation of filter cake and efficient discharge, thereby enabling the recycling of water and improving mining operations.
Implementation Method 1
pressure is by means of a pressure arrangement exerted to the material in the filter chambers to cause liquid of the material to be pressed out of the material and to flow through the filter media
Implementation Method 2
liquid of the material to be pressed out of the material and to flow through the filter media and to form filter cake of the material in the filter chamber
Implementation Method 3
the elongate bottom discharge opening is opened by means of the first openable and closable hatch arrangement to allow filter cake to fall by means of gravity out of said at least one filter chamber
Data Source
AI summary
A liquid filtration apparatus includes a series of upright filter plates forming a filter plate pack. Filtering spaces are formed in the filter plate pack. The liquid filtration apparatus includes at least one filtering space and a filter chamber that is at least partly limited laterally by a filter media. The at least one filtering space has an elongated bottom discharge opening at a level below the filter chamber. The elongated bottom discharge opening is provided with a first openable and closable hatch arrangement and with a second openable and closable hatch arrangement extending across the elongated bottom discharge opening.