H-Shaped Weir Immiscible Liquid Separator for Underground Installation
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Solution Overview
Problem
Existing immiscible liquid separators require frequent maintenance and are not suitable for underground installation due to the need for daily cleaning of ball-type float valves and limited capacity to handle variable effluent flows, leading to potential blockages in sewage systems from solidified greases and fats.
Innovation Solution
A separator design featuring a long, H-shaped weir and a slanted compartment that allows immiscible liquids to separate naturally, eliminating the need for a ball-type float valve and enabling underground installation, with a storage system for oils and efficient water discharge through a circumferential weir.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a ball-type float valve is used to control water discharge, then the separator can effectively separate immiscible liquids, but it requires daily cleaning and maintenance which makes it unsuitable for underground installation
Solution Approach 1:
The invention removes the ball-type float valve component entirely from the system. Instead, it uses a passive weir-based overflow mechanism where separated water automatically discharges through a submerged outlet, eliminating the need for mechanical valves that require cleaning and maintenance.
Solution Approach 2:
The separator performs self-maintenance through its passive design. The submerged outlet prevents debris accumulation, and the system automatically handles separation and discharge without requiring human intervention for valve cleaning or adjustment, making it suitable for underground installation.
2Device complexity
If a conventional linear weir is used for water discharge, then the separator structure is simple, but it cannot accommodate variable effluent flows without requiring frequent emptying
Solution Approach 1:
The invention transitions from a linear one-dimensional weir to a three-dimensional circumferential weir that extends around the separation chamber. This dimensional change increases the effective discharge perimeter and capacity without significantly increasing overall structural complexity, allowing accommodation of variable flow rates.
Solution Approach 2:
The circumferential weir is divided into multiple segments or zones around the chamber, each contributing to the total discharge capacity. This segmentation allows the system to handle variable flows by utilizing different portions of the circumferential path depending on the flow rate.
3Ease of operation
If the separator is designed for easy access to internal areas, then maintenance is easier, but it cannot be installed underground which limits space utilization
Solution Approach 1:
The invention removes the need for internal access points, inspection ports, or removable covers that would compromise underground installation. The entire separator is designed as a sealed underground unit with all maintenance functions performed remotely or through the passage of waste materials themselves.
Solution Approach 2:
The separator is designed to be maintenance-free in its installation location. The passive mechanisms and submerged outlets prevent clogging and debris accumulation, allowing the unit to operate underground without requiring human access for routine maintenance.
4Productivity
If a large oil reservoir is provided to handle substantial waste liquids, then the separator capacity increases, but the device size and complexity increase
Solution Approach 1:
The invention merges the oil storage function with the separation chamber itself. The separation chamber serves dual purposes: separating immiscible liquids and storing separated oils, eliminating the need for a separate large oil reservoir and reducing overall device complexity.
Solution Approach 2:
The separation chamber is designed to perform multiple functions: initial separation of oil and water, temporary storage of separated oils, and overflow discharge control. This multi-functionality increases handling capacity without adding separate components or increasing device complexity.
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 separates immiscible liquids without requiring daily maintenance, accommodates varying effluent flows, and prevents blockages by allowing oils to float and be stored separately from water, reducing maintenance costs and ensuring efficient operation.
Implementation Method 1
a first immiscible liquid of one specific gravity will float on a second immiscible liquid having a greater specific gravity
Implementation Method 2
the general kitchen waste oils have a specific gravity of about 0.92-0.93, whereas the specific gravity of water is about 1.0
Implementation Method 3
Two immiscible liquids of different specific gravities will separate under the force of gravity into two separate layers in a calculable or measurable time period, according to Stokes Law
Data Source
AI summary
A large capacity immiscible liquid separator adapted for placement in the ground, rather than under the sinks of food processing facilities. The liquid separator has a large oil compartment that can be vacuum suctioned to empty the contents thereof. Large volumes of the immiscible liquid influent can be processed without the use of a ball-type valve. A large circumference weir allows a large volume of separated waste water to overflow to the sewer system. The weir can be H-shaped to provide a large circumference and thus accommodate large separated waste water flows thereover.