Refilling Valve Layout for Continuous Water-Abrasive Suspension Cutting
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Solution Overview
Problem
Water-abrasive injection cutting facilities face limitations in abrasive agent-water ratio and cutting force due to entrapped air and ineffective acceleration of abrasive particles, while continuous operation is hindered by clogging and blocking issues in lock solutions at high pressures.
Innovation Solution
A water-abrasive suspension cutting facility with a refilling valve system that includes multiple aspects to prevent clogging, such as adjustable valve positions, pressure inlet, purge functionality, and adjustable valve seats, ensuring reliable operation and continuous refilling without shutting down the facility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If lock solutions are used to enable continuous operation, then productivity is improved, but the valves clog and block due to high pressure and abrasive agent
Solution Approach 1:
The refilling valve is divided into multiple functional segments: a lock chamber that isolates pressure zones, a valve space that separates the moving valve body from abrasive agent, and distinct inlet/outlet pathways. This segmentation prevents abrasive agent from directly contacting and clogging the valve body while enabling continuous operation through controlled pressure differentials between segments.
Solution Approach 2:
The valve space acts as an intermediary chamber between the abrasive agent-containing pressure tank and the lock chamber. This intermediate space protects the valve body from direct exposure to abrasive agent, allowing the valve to open and close reliably without clogging while maintaining the high-pressure abrasive suspension flow path.
2Force
If abrasive agent is mixed with water at high pressure upstream of the exit nozzle, then cutting force is improved, but the facility must be shut down for refilling the abrasive agent container
Solution Approach 1:
The lock chamber is pre-filled with abrasive agent before the refilling process begins. This preliminary preparation allows the pressure tank to be refilled during operation without interrupting the cutting process, as the lock chamber serves as a buffer that maintains abrasive agent supply while the main container is replenished.
Solution Approach 2:
The refilling valve system enables continuous refilling of the pressure tank with abrasive agent during cutting operation. The controlled opening and closing of the valve body, facilitated by the pressure differential mechanism and protected valve space, ensures uninterrupted abrasive agent supply to maintain continuous high-force cutting without facility shutdown.
3Speed
If high pressure is applied to open and close the refilling valve, then refilling speed is improved, but the valve body becomes difficult to move or blocks
Solution Approach 1:
The valve body is extracted from the high-pressure abrasive agent environment and placed in a protected valve space that is isolated from direct abrasive agent contact. This extraction allows the valve body to move freely for rapid opening and closing without being subjected to the full force of high-pressure abrasive suspension, preventing blocking while maintaining refilling speed.
Solution Approach 2:
The system uses hydraulic pressure differentials between the lock chamber and pressure tank to automatically actuate the valve body. By controlling the pressure balance across the valve body through the refilling valve mechanism, rapid opening and closing is achieved without mechanical forcing, enabling fast refilling while preventing valve body blocking through controlled pressure equalization.
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 facility maintains continuous operation by preventing valve clogging and blocking, allowing for higher abrasive agent-water ratios and enhanced cutting force without air entrainment, ensuring reliable and efficient refilling processes.
Implementation Method 1
cutting materials by way of a high-pressure water jet, to which an abrasive agent is added
Implementation Method 2
water-abrasive suspension cutting facilities are used for cutting materials
Data Source
AI summary
A water-abrasive suspension cutting facility includes a pressure tank (11) for providing a water-abrasive agent suspension (13) which is under pressure, a lock chamber (21), and a refilling valve for refilling abrasive agent into the pressure tank via the lock chamber (21). The refilling valve (21) includes a valve entry (49), a valve exit (51), a valve space (71) which is arranged between the valve entry (49) and the valve exit (51), and a valve body (67) which is located in the valve space (71). The valve entry (49) is connected to the lock chamber (21) and the valve exit (51) to the pressure tank (11). The refilling valve (19) can assume a first closure position, a first open position and a second open position. In the first closure position the lock chamber (21) is fluid-separated from the pressure tank.