Pressurized Liquid Lifting Device Using Air Layer to Extend Lift Height
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Solution Overview
Problem
Conventional pressurized liquid lifting devices using air pumps are limited by the maximum discharge pressure, unable to lift liquids to a height equal to or higher than the potential liquid lifting height corresponding to the pump's pressure, typically restricting the lift to around 20 cm for a 2 kPa air pump.
Innovation Solution
The device incorporates a liquid lifting tank, a liquid lifting pipe with a branching section and air supply pipe, a liquid storage section, and an air valve, allowing the liquid to be lifted beyond the potential liquid lifting height by using an air layer to push stored liquid through the pipe, with the air supply pipe extending above the potential lifting height to prevent liquid contact and maintain valve functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the air pump's maximum discharge pressure is used to determine liquid lifting height, then the liquid can be lifted to the potential liquid lifting height, but the liquid cannot be lifted to a position equal to or higher than this height
Solution Approach 1:
The liquid storage section stores a predetermined amount of liquid in advance at a position higher than the liquid surface in the tank. This preliminary storage enables the liquid to be discharged beyond the potential liquid lifting height determined by the air pump's maximum discharge pressure, as the stored liquid is already positioned to be pushed upward by the air layer without requiring the full pressure head for the entire height.
Solution Approach 2:
An air layer is introduced into the liquid lifting pipe to act as an intermediary that pushes the stored liquid upward. The air layer serves as a mediator between the air pump's pressure and the liquid, allowing the liquid to be propelled beyond the conventional height limit by the compressible air cushion rather than direct pressure transmission.
2Reliability
If the air supply pipe is extended above the potential lifting height to maintain valve functionality, then the valve integrity is maintained, but the device complexity increases
Solution Approach 1:
The air supply pipe is extended in the vertical dimension above the potential lifting height, creating a separate air introduction path that does not interfere with the liquid discharge function. This dimensional separation allows the valve to maintain integrity by keeping air and liquid pathways distinct, while the extended pipe simply provides an elevated air entry point without adding horizontal 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
Enables the liquid to be lifted to a position higher than the maximum discharge pressure of the air pump by utilizing an air layer to push stored liquid through the pipe, ensuring continuous discharge and maintaining valve integrity.
Implementation Method 1
an air pump that pressurizes the interior of the liquid lifting tank
Implementation Method 2
the air layer present at a position halfway in the liquid lifting pipe is pushed by the liquid having been pushed out of the liquid lifting tank, the liquid left in the liquid storage section is pushed up toward the liquid delivery port on the other end side of the liquid lifting pipe via the air layer
Data Source
AI summary
A liquid lifting device includes: a liquid lifting tank storing liquid; an air pump pressurizing the interior of the liquid lifting tank; a liquid lifting pipe connecting the liquid lifting pipe to the liquid lifting tank having a liquid delivery port in the other end that stands upright; an air supply pipe in which one end portion of the air supply pipe connected to a branching section provided at a position halfway in the liquid lifting pipe and an upright section provided in the other end portion thereof; an air valve that is provided on the other end portion of the air supply pipe; and a liquid storage section that is formed in part of the liquid lifting pipe at a position between the liquid delivery port and the branching section and that is positioned below the branching section.