Hydraulic Pump System for Slurry Discharge
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Solution Overview
Problem
Reciprocating positive displacement pumps used for handling slurry media experience pressure fluctuations during discharge, leading to inconsistent product quality due to independent operation of discharge valves and incomplete pre-compression strokes, which are not fully synchronized with the switching between suction and discharge strokes.
Innovation Solution
A hydraulic pump system with interconnected piston/cylinder discharge valves via a hydraulic line, along with sensors for synchronized control, ensures no volume difference during valve operations, eliminating pressure fluctuations by compensating displaced volumes between valves and completing pre-compression strokes effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple reciprocating positive displacement pumps are arranged in parallel to increase flow capacity, then the total flow requirements can be met, but pressure fluctuations occur in the discharge flow leading to variable consistency
Solution Approach 1:
The patent combines multiple reciprocating positive displacement pumps in parallel with interconnected discharge lines, and further merges the discharge valve operations through hydraulic interconnection. This allows the pumps to work together to meet high flow requirements while the merged valve control eliminates pressure fluctuations, ensuring consistent slurry medium quality throughout the discharge flow.
2Ease of operation
If discharge valves are operated independently to control flow, then individual valve control is achieved, but volume differences occur during valve operations causing pressure fluctuations
Solution Approach 1:
The patent introduces a hydraulic interconnection system as an intermediary between independently operated discharge valves. This hydraulic medium acts as a mediator that transmits pressure equalization forces between valves, allowing them to operate independently while maintaining synchronized volume displacement, thereby eliminating pressure fluctuations in the discharge flow.
3Reliability
If pre-compression stroke is performed prior to discharge valve opening, then pressure across discharge valve can be maintained at zero, but incomplete pre-compression occurs due to lack of synchronization
Solution Approach 1:
The patent implements a feedback mechanism through hydraulic interconnection between discharge valves. The hydraulic system continuously monitors and adjusts valve operations based on pressure equalization requirements, ensuring that pre-compression strokes are completed fully and synchronously. This feedback loop maintains pressure control accuracy while ensuring complete pre-compression before discharge valve opening.
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 system achieves a pulsation-free discharge flow with consistent slurry medium consistency, enhancing product quality by maintaining equal hydraulic volume and synchronized valve operations, thus preventing pressure fluctuations.
Implementation Method 1
said control means comprise a hydraulic line interconnecting both cylinders of said hydraulic piston/cylinder driven discharge valves
Data Source
AI summary
This disclosure relates to a hydraulic pump system for handling a slurry medium comprising at least two reciprocating positive displacement pumps, both pumps being arranged for alternating intake of slurry medium via a suction inlet and discharge of slurry medium via a discharge outlet, and piston/cylinder discharge valves for alternating closing and opening each discharge outlet. In a first aspect, a hydraulic pump system for handling a slurry medium, comprising at least two reciprocating positive displacement pumps, both pumps being arranged for alternating intake of slurry medium via a suction inlet and discharge of slurry medium via a discharge outlet, and piston/cylinder discharge valves for alternating closing and opening each discharge outlet, as well as control means for controlling the alternate closing and opening of both piston/cylinder discharge valves, such that during operation no volume difference occurs in the discharge of slurry medium is disclosed. In another aspect the control means comprise a lever assembly interconnecting the pistons of both piston/cylinder driven valves.