Boring Liquid Circulation With Shielded Backflow Prevention
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Solution Overview
Problem
Conventional liquid circulation systems in boring devices suffer from backflow of liquid suspension, which affects the reliability of liquid circulation and the efficiency of the boring process.
Innovation Solution
A liquid circulation system with a shield covering the boring area, a liquid feeder to forcibly supply liquid to the tip, and a liquid collector to forcibly collect the liquid suspension, using tube pumps to ensure synchronized liquid circulation and prevent backflow, accompanied by a strainer to remove large fragments and a biasing mechanism to maintain contact with the workpiece.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If liquid suspension is delivered through an outlet tube from a liquid suspension collector, then liquid circulation is achieved, but backflow of liquid suspension occurs depending on the amount of discharged liquid suspension
Solution Approach 1:
The patent applies preliminary anti-action by providing a backflow prevention mechanism (check valve or one-way valve) in the outlet tube before backflow can occur. This valve allows liquid suspension to flow from the collector to the separator but automatically closes to prevent any backflow, thus eliminating the harmful effect while maintaining the circulation function.
Solution Approach 2:
The patent introduces an intermediary component (backflow prevention valve) between the liquid suspension collector and the separator. This intermediary element mediates the flow of liquid suspension, allowing forward flow while blocking reverse flow, thus resolving the contradiction between maintaining circulation and preventing backflow.
2Reliability
If a shield covers the boring area to contain liquid suspension, then liquid containment is improved, but liquid suspension may still leak or backflow without forced collection
Solution Approach 1:
The patent applies hydraulics by using a pump to forcibly collect liquid suspension from the shielded boring area. The pump creates hydraulic pressure to actively draw liquid suspension through collection channels in the shield, ensuring complete containment and preventing leakage by overcoming gravitational and pressure forces that would otherwise cause backflow or leakage.
Solution Approach 2:
The patent applies preliminary action by providing collection channels within the shield structure itself, positioned to capture liquid suspension at its source before it can leak or backflow. The shield is designed with integrated collection features that preemptively capture and redirect liquid suspension into the forced collection system.
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
Ensures reliable liquid circulation without backflow, allowing efficient boring operations by forcibly feeding and collecting liquid suspension, while maintaining effective delivery of chips and preventing leakage.
Implementation Method 1
The liquid feeder may include a first tube pump that forcibly feeds part of the liquid held in the liquid container to the tip, the liquid collector may include a second tube pump that forcibly collects the liquid suspension from the area shielded by the shield into the liquid container
Data Source
AI summary
Provided is a liquid circulation system including: a shield that covers a boring area of a workpiece in which a hole is bored with a tip of a bit attached to a boring device; a liquid container that holds a liquid; a liquid feeder that forcibly feeds the liquid held in the liquid container to the tip; and a liquid collector that forcibly collects a liquid suspension from an area shielded by the shield and returns the liquid suspension to the liquid container. The liquid circulation system is able to ensure liquid circulation while reliably preventing backflow of the liquid suspension.