Hydraulic Tank Float and Partition Plate for Bubble Prevention
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Solution Overview
Problem
Existing hydraulic-oil tank devices face challenges in preventing the generation of air bubbles on the oil surface when the oil surface fluctuates or is violently shaken, particularly during the operation of hydraulic shovels on slopes or turns.
Innovation Solution
A tank device design featuring a return filter with a filter medium and a plate-like float that floats with the liquid surface, coupled with string-like or rod-like structures, which prevents turbulence and tilting of the oil surface, thereby preventing air bubble formation. Additionally, plate-like portions installed on the tank body's sides help to stabilize the liquid surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a partition plate is used to obstruct oil flow, then oil migration is prevented, but air bubbles still form on the oil surface during violent shaking
Solution Approach 1:
The tank is divided into multiple compartments by partition plates with specific hole patterns. The partition plate includes a first plate with first holes and a second plate with second holes, creating segmented flow paths that reduce turbulence while maintaining filtration functionality.
Solution Approach 2:
A foam material is introduced as an intermediary substance that absorbs and dampens violent oscillations of the oil surface. The foam acts as a buffer between the oil and air, preventing air bubble formation during shaking while allowing the partition plate to maintain its structural function.
2Ease of operation
If the oil surface is allowed to fluctuate freely, then hydraulic operations are smooth, but air bubbles form during violent shaking
Solution Approach 1:
Different regions of the tank are given different properties. The partition plate creates zones with varying hole densities and sizes, allowing oil to flow freely in calm conditions while providing turbulence reduction in areas prone to violent shaking and air bubble formation.
Solution Approach 2:
The foam material serves as a mediator that allows oil surface fluctuation for smooth hydraulic operation while simultaneously preventing air bubble formation by dampening violent oscillations. The foam maintains the beneficial oil movement while blocking the harmful air entrainment.
3Reliability
If a filter is provided in the tank, then oil filtration is achieved, but the filter case creates turbulence on the oil surface
Solution Approach 1:
The filter assembly is segmented into multiple components: a filter case, a first partition plate with first holes, and a second partition plate with second holes. This segmentation allows oil to be filtered while the partition plates redirect flow to minimize turbulence generation near the filter case.
Solution Approach 2:
The partition plates are positioned at different vertical levels, creating a multi-dimensional filtration approach. The first partition plate is located at a first height and the second partition plate at a second height, allowing oil to flow through multiple levels and reducing concentrated turbulence at any single point near the filter case.
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
Effectively prevents the generation of air bubbles even under conditions of fluctuating or violently shaken oil surfaces, ensuring the hydraulic oil remains stable and free from air contamination, reducing defects caused by air suction in hydraulic systems.
Implementation Method 1
a substantially plate-like float inserted into the tank body and floating in accordance with change in a liquid surface of the liquid stored in the tank body
Implementation Method 2
the return filter including a filter medium filtering the liquid and a filter case internally provided with the filter medium
Data Source
AI summary
Inside a tank body storing a liquid, a return filter is provided protruding downward from an upper surface of the tank body, and a substantially plate-like (plate-shaped) float is also provided that is inserted into the tank body and floats in accordance with change in a liquid surface of the liquid stored in the tank body. The float is provided with an opening larger than a diameter of a filter case, and in a plan view, the float is disposed between the tank body and the filter case.