Piston Pump Wear Detection via Water Tank Sensor
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Solution Overview
Problem
Conventional concrete piston pumps experience disproportionate wear on delivery pistons and cylinders due to increased conveying speed, leading to premature failure and unnoticed damage, which can result in pump failure if not addressed promptly.
Innovation Solution
Incorporation of a sensor device to detect changes in the composition of the liquid in the water tank, allowing for early detection of wear on delivery pistons and cylinders, using indicators like pH, redox voltage, turbidity, or conductivity to initiate timely preventive maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the speed of movement of the pump pistons is increased to achieve higher pumping capacity, then the productivity is improved, but the wear on the pump pistons increases disproportionately
Solution Approach 1:
The sensor device performs preliminary detection of wear indicators (turbidity, pH, conductivity changes) in the water tank before the wear becomes critical and causes pump failure. This allows preventive maintenance to be scheduled before the pistons are completely worn out, resolving the contradiction by enabling high-speed operation while maintaining reliability through early warning.
Solution Approach 2:
The sensor device continuously monitors the water quality parameters and provides feedback about the wear state of the pistons. This feedback mechanism allows operators to adjust maintenance schedules based on actual wear conditions rather than fixed intervals, enabling higher productivity while preventing catastrophic failures through real-time monitoring.
2Productivity
If the pump operates for extended periods without breaks to maintain productivity, then the productivity is improved, but the wear on pistons increases and damage goes unnoticed
Solution Approach 1:
The sensor device enables the pump system to self-monitor its own health status by detecting changes in water quality that indicate piston wear. The system serves itself by providing automatic wear detection without requiring external inspection, allowing continuous operation with built-in reliability monitoring that alerts operators to emerging problems.
Solution Approach 2:
The manual inspection method (operator checking water turbidity after pumping) is replaced by an automated sensor device that continuously monitors wear indicators. This substitution of mechanical/manual inspection with automated sensing enables continuous operation while maintaining reliability through uninterrupted monitoring of piston condition.
3Reliability
If water changes are performed frequently to maintain water quality, then the reliability is improved, but the loss of time and productivity decrease
Solution Approach 1:
Frequent manual water changes based on scheduled maintenance are replaced by continuous automated sensor monitoring that detects actual wear conditions. The sensor device substitutes for the manual water change operation by providing real-time information about water quality and piston wear, allowing water changes to be performed only when actually needed rather than on a fixed schedule.
Solution Approach 2:
The maintenance strategy shifts from time-based water changes to parameter-based water changes. Instead of changing water at fixed intervals, the sensor device monitors specific parameters (turbidity, pH, conductivity) and triggers water changes only when these parameters indicate actual piston wear, optimizing the balance between reliability and productivity.
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 early detection and prevention of wear-related failures, extending the operational life of piston pumps by allowing for timely replacement of worn components before they cause pump failure.
Implementation Method 1
using indicators like pH, redox voltage, turbidity, or conductivity
Implementation Method 2
using indicators like pH, redox voltage, turbidity, or conductivity
Implementation Method 3
water lubricates the conveying pistons and cools the conveying cylinders
Implementation Method 4
water lubricates the conveying pistons and cools the conveying cylinders
Data Source
Figure 1
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AI summary
The invention relates to a piston pump (1) for viscous materials (100), comprising at least one delivery cylinder (2, 3), a delivery piston (4, 5) axially movable in the delivery cylinder (2, 3) and connected to a drive (8, 9) via a piston rod (6, 7), and at least one water tank (10) connected to the delivery cylinder (2, 3) and arranged between the delivery cylinder (2, 3) and the drive (8, 9) through which the piston rod (6, 7) passes, wherein at least one sensor device (11) is provided for detecting a change in the composition of the liquid (101) located in the water tank (10), and a method for determining and monitoring piston wear in such a piston pump (1).