Self-Priming Pump Oil-Water Separator Prevents Emulsification
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Solution Overview
Problem
Existing oil-water separators face challenges in maintaining high separation efficiency due to emulsification of water and oil when a mixed liquid is introduced, leading to reduced performance and increased costs and environmental impact.
Innovation Solution
An oil-water separator with a self-priming pump that includes a cyclone separation portion for rough separation and a multiple-step liquid passage for main separation, along with a self-priming pump that introduces the mixed liquid by suction from the downstream side, preventing emulsification and enhancing separation efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a pump is used to introduce the mixed liquid of water and oil into the oil-water separator, then the mixed liquid can be introduced into the separator, but the water and oil tend to emulsify in the pump causing significant lowering of oil-water separation ability
Solution Approach 1:
Instead of introducing the mixed liquid from the outside into the separator using a pump (conventional approach), the invention inverts the flow direction by having the separator discharge the separated water to the outside using a self-priming pump. This reversal prevents emulsification because the pump handles only separated water rather than the mixed liquid, thereby maintaining high oil-water separation ability while still achieving effective liquid introduction and removal
2Productivity
If conventional pump introduction method is used, then mixed liquid can be introduced into separator, but emulsification occurs leading to reduced separation efficiency and increased operational costs
Solution Approach 1:
The invention inverts the conventional approach by discharging separated water rather than introducing mixed liquid through a pump. This maintains high separation efficiency by avoiding emulsification while reducing operational costs through energy-efficient self-priming pump operation and elimination of chemical additives that would increase operational expenses
3Device complexity
If mixed liquid is introduced by pump, then liquid feeding is achieved, but water and oil emulsify requiring chemical use and large-scale equipment
Solution Approach 1:
By inverting the flow direction to discharge separated water rather than introduce mixed liquid, the invention eliminates emulsification and the need for chemical additives, thereby reducing environmental pollution. The self-priming pump configuration also allows for compact equipment design without requiring large-scale infrastructure
Solution Approach 2:
The self-priming pump automatically draws in mixed liquid and discharges separated water without requiring external chemical additives or complex control systems. The system serves itself by using the density difference between oil and water to achieve separation, with the pump handling only the lighter water phase, thereby eliminating the need for chemical pollution control measures
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 prevents emulsification, maintaining high oil-water separation efficiency and allowing for rapid and efficient separation of water and oil without chemical use, reducing environmental impact and operational costs.
Implementation Method 1
a rough separation portion performing rough separation of the oil and the water by cyclone separation in which a swirl flow is generated by introduction of the mixed liquid into a cyclone cylinder
Implementation Method 2
a main separation portion connected to a downstream side of the rough separation portion and performing main separation of the oil and the water according to specific gravity difference by passing the mixed liquid, which has undergone the rough separation in the rough separation portion, from above to below through a liquid passage formed in multiple-step form
Implementation Method 3
a self-priming liquid pump connected to a downstream side of the separator portion and connected directly or indirectly to the water discharge portion to introduce the mixed liquid into the separator portion by sucking the mixed liquid from an exterior of the separator portion
Data Source
AI summary
An oil-water separator with a self-priming pump of high oil-water separation ability enables a mixed liquid to be introduced into the oil-water separator without causing emulsification. A separator portion separating a mixed liquid includes a rough cyclone separation portion. A main separation portion downstream of the rough separation portion performs main separation according to specific gravity. A water discharge portion connected to the main separation portion discharges water. An oil storage tank stores the oil separated from the water and overflowing the main separation portion. A self-priming liquid pump connected downstream of the separator portion and connected to the water discharge portion sucks the mixed liquid from an exterior to enable venting and discharging of air.