Self-Emptying Separator With Pressure-Monitored Hydraulic Control
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Solution Overview
Problem
Existing self-emptying separators face challenges with leak detection in their hydraulic control fluid systems, which are difficult to implement due to the rotation of the centrifugal drum, and lack precision in controlling the volume of fluid for opening and closing the solids-discharge openings.
Innovation Solution
A self-emptying separator with a control fluid system that includes a closed conduit system for feeding fluids to the piston slide valve from a stationary location, using a pressure vessel for precise control of opening and closing movements, and monitoring pressure drops to detect leaks and adjust emptying volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If an open control fluid system with sprays is used, then the system is simple to implement, but leaks cannot be easily detected and fluid control precision is poor
Solution Approach 1:
The patent replaces the open spray system with a closed hydraulic system using a piston slide valve actuated by controlled fluid pressure. This substitution enables precise control of the opening/closing mechanism while allowing for leak detection through pressure monitoring in the closed circuit.
Solution Approach 2:
The control device monitors fluid pressure and volume in the closed system, providing feedback on the position and sealing status of the piston slide valve. This feedback mechanism enables detection of leaks and ensures precise control of the emptying process.
2Device complexity
If an open control fluid system with sprays is used, then the system structure is simple, but precision in controlling fluid volume for opening/closing is poor
Solution Approach 1:
The patent employs a hydraulic system with a piston slide valve where controlled volumes of fluid are introduced to precisely actuate the opening and closing movements. The closed hydraulic circuit allows for accurate metering and control of fluid volume, ensuring precise timing and positioning of the solids-discharge openings.
3Reliability
If a closed conduit system with pressure vessel is used, then leak detection and fluid control precision are improved, but the system complexity increases
Solution Approach 1:
The control device performs multiple functions: it controls the opening and closing of the piston slide valve, monitors fluid pressure and volume, detects leaks, and adjusts emptying parameters. This multi-functionality consolidates what could be separate complex components into a single integrated control system.
4Manufacturing precision
If precise fluid volume control is implemented, then emptying quantity accuracy is improved, but the control system complexity increases
Solution Approach 1:
The control device monitors the actual fluid volume used in the closed hydraulic system and compares it with the required volume for precise emptying control. This feedback enables automatic adjustment and ensures accurate emptying quantity while integrating the control functions into a single device.
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 precise control of the emptying volume and leak detection, reducing fluid losses and ensuring accurate solids discharge by using a closed hydraulic system and pressure monitoring for the control fluid system.
Implementation Method 1
an emptying system with a piston slide valve (11) that can be moved in a fluid-actuated manner, in particular by means of fluid, into an open position and into a closed position
Implementation Method 2
a rotatable centrifugal drum (1) with a vertical axis of rotation... the centrifugal drum (1) is provided with solids-discharge openings (12)
Data Source
AI summary
A self-emptying separator has a rotatable drum, an suspension inlet, a liquid phase outlet, and solids-discharging openings to which an emptying system with a piston slide valve is assigned. The emptying system has a control fluid system assigned to the piston slide valve controlling its opening and closing movements. St least fluid for activating closing movements of the piston slide valve can be directed in a closed conduit system as far as a closing chamber. To supply the closing chamber with the fluid for activating closing movements of the piston slide valve, a pressure vessel is provided upstream of the closing fluid valve and which can be acted upon and can be preloaded with a defined pressure via an additional valve. The control device also determines a drop in pressure in the pressure vessel when the solids-discharging openings are closed.