Abrasive Feed Lock for Water-Abrasive Suspension Cutting
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Solution Overview
Problem
Existing water-abrasive suspension cutting facilities face challenges in rapidly filling and emptying the lock chamber with abrasive agent during operation to introduce a sufficient quantity into the high-pressure region.
Innovation Solution
A water-abrasive suspension cutting facility with an abrasive agent feed lock system that includes a lock chamber connected to a suction device, allowing for rapid introduction of abrasive agent into the high-pressure region using reduced pressure, and a pressure compensation system to manage pressure changes, enabling efficient filling and emptying of the lock chamber.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a lock chamber is used to introduce abrasive agent into the high-pressure region during running operation, then the cutting process can continue without interruption, but the speed of filling and emptying the lock chamber is insufficient to bring an adequately large quantity of abrasive agent into the high-pressure region per unit of time
Solution Approach 1:
The system uses periodic opening and closing of the entry-side and exit-side shut-off elements to rhythmically fill and empty the lock chamber. This periodic action allows continuous operation while maintaining high throughput by optimizing the timing and sequence of shut-off element operations.
Solution Approach 2:
A suction device is connected to the lock chamber to create negative pressure (vacuum) that rapidly draws abrasive agent into the lock chamber. This hydraulic/pneumatic assistance dramatically accelerates the filling process, enabling much higher abrasive agent quantities to be introduced per unit time while maintaining continuous cutting operation.
2Productivity
If the lock chamber is filled rapidly with abrasive agent, then the productivity increases, but the complexity of the filling and emptying mechanism increases
Solution Approach 1:
The suction device automatically draws abrasive agent into the lock chamber when the entry-side shut-off element is opened, using the pressure differential created by the cutting system itself. The system leverages its own operational parameters (pressure differentials during cutting) to automate the filling process without requiring external complex filling mechanisms.
Solution Approach 2:
The lock chamber acts as an intermediary reservoir that decouples the continuous cutting operation from the periodic abrasive agent replenishment. By using simple shut-off elements and a suction device connected to this intermediary chamber, the system achieves rapid abrasive agent introduction without complicating the main cutting mechanism.
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 allows for a greater quantity of abrasive agent to be introduced into the high-pressure region per unit of time during operation, improving the efficiency and speed of the cutting process.
Implementation Method 1
The lock chamber is connected to a suction device which can be activated when the first shut-off element is opened, in order to produce a reduced pressure in the lock chamber, in order to be able to bring abrasive agent into the lock chamber as rapidly as possible
Implementation Method 2
The high-pressure conduit at least in a part-flow can run through a pressure container, in which abrasive agent is located, when admixing the abrasive agent, so that the abrasive agent is carried along which is to say entrained out of the pressure container by the carrier fluid, and a suspension is formed
Implementation Method 3
An abrasive agent reservoir (storage device), from which the abrasive agent is moved into the lock chamber by way of gravity, is preferably arranged above the lock chamber
Data Source
AI summary
A water-abrasive suspension cutting facility with at least one high-pressure source (2) which provides a carrier fluid at a high pressure, with at least one exit nozzle (6), with a high-pressure conduit (4) connecting the high-pressure source (2) to the exit nozzle (6), as well as with an abrasive agent feed lock (16). The abrasive agent feed lock (16) is connected to the high-pressure conduit (4) and includes an entry side shut-off element (26) and an exit-side shut-off element (24). A lock chamber (18) is arranged between the entry side shut-off element (26) and an exit-side shut-off element (24). A suction device (30) is configured for producing a reduced pressure in the lock chamber (18) and is connected to the lock chamber (18).