Electric Oil Pump Venting Valve to Break Siphon and Stop Overflow
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Solution Overview
Problem
Existing oil pumps with one-way valves have complex structures and are prone to liquid overflow due to the sealing mechanism only activating after liquid enters the exhaust chamber, potentially causing internal damage.
Innovation Solution
A simple structure electric oil pump with an electromagnetic exhaust valve installed on the intake port, featuring an exhaust tube and intake tube perpendicular to each other, which uses electromagnetic force to seal the intake port during pumping and ventilate to prevent overflow when stopped, accompanied by a liquid storage box and ventilation hole to manage residual liquid.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a movable sealing ball is used to block the connecting channel after liquid enters the exhaust chamber, then liquid can be prevented from flowing out, but the structure becomes complex and liquid may still overflow into the control box causing internal damage
Solution Approach 1:
The patent extracts the sealing function from the liquid-driven movable ball mechanism and relocates it to the gas phase by using an electromagnetic valve to control air flow. This separates the sealing function from the liquid flow path, preventing liquid from entering the control box while simplifying the overall structure.
Solution Approach 2:
The patent introduces air as an intermediary substance to achieve sealing. By using an electromagnetic exhaust valve to control air flow into or out of the pipeline, the system prevents liquid reflux without requiring complex liquid-based sealing mechanisms. The air acts as a mediator that blocks liquid flow through pressure differential.
2Reliability
If the sealing ball is pushed only after liquid enters the exhaust chamber, then the valve can prevent liquid flow, but liquid may overflow into the control box before the sealing ball activates
Solution Approach 1:
The electromagnetic exhaust valve performs preliminary action by controlling air flow before liquid can overflow into the control box. When the pump stops or encounters abnormal conditions, the valve proactively adjusts air pressure to prevent liquid reflux, rather than reacting after liquid has already entered the exhaust chamber.
Solution Approach 2:
The patent replaces the mechanical liquid-driven sealing ball system with an electromagnetic control system. The electromagnetic exhaust valve responds electronically to control signals, providing faster response time compared to the mechanical delay of a liquid-driven ball. This substitution eliminates the time lag between liquid intrusion and sealing activation.
3Reliability
If a complex valve structure with movable sealing ball is used, then liquid sealing can be achieved, but the assembly and maintenance become more difficult
Solution Approach 1:
The patent extracts the sealing mechanism from the liquid phase and implements it in the gas phase using an electromagnetic valve. This removes the need for precision-machined liquid-tight sealing components and movable sealing balls, significantly simplifying manufacturing and assembly while maintaining reliable sealing through air pressure control.
Solution Approach 2:
The patent substitutes a complex mechanical sealing system with an electromagnetic valve system. The electromagnetic valve uses electromagnetic actuation rather than mechanical moving parts, reducing the number of components, simplifying assembly, and improving manufacturability while achieving the same liquid sealing function through air pressure differential.
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 liquid overflow and reflux, ensuring system safety and normal operation by using a single electromagnetic valve for one-way functionality, simplifying the structure and assembly process while maintaining efficient liquid transport.
Implementation Method 1
When the power button is pressed, the electromagnetic force of the electromagnetic exhaust valve closes the valve... When the stop button is pressed, the electromagnetic force disappears
Implementation Method 2
external air is discharged into the connecting pipe to destroy the siphon effect of the pipeline
Data Source
AI summary
A simple structure electric oil pump with an one-way air valve is provided, which includes a control box and an electromagnetic exhaust valve. The control box is provided with a connecting pipe and a control board. One end of the connecting pipe is connected to an oil extraction pipe, and the other end is connected to an oil outlet pipe. The control box is equipped with an intake port and an intake duct. The electromagnetic exhaust valve is equipped with an exhaust tube and an intake tube. The exhaust tube is installed inside the intake port. When the stop button is pressed, the electromagnetic force disappears, and the exhaust tube and the intake tube are in a ventilated status, allowing the connecting pipe to be connected to the outside for exhaust, and external air is discharged into the connecting pipe to destroy the siphon effect of the pipeline.