Hydraulic Double-Acting Hand Pump Pressure Management
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional reciprocating electronic pumps face issues with piston inoperability due to external magnetic force variations, speed changes with pressure variations, and failure to perform fluid suction and discharge when cylinder pressure exceeds the solenoid's magnetic force, leading to reliability degradation.
Innovation Solution
A hydraulic double-acting hand pump design featuring low and high pressure side fluid supply grooves, a fluid inlet, and a piston that alternately ascends and descends, with a bypass path and relief valve to manage pressure and ensure fluid discharge, and a fluid flow controller to regulate fluid flow through a fluid outlet.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a solenoid is used to drive the piston in a reciprocating electronic pump, then the piston can perform reciprocating motions, but the reliability degrades when external magnetic force variations occur or when cylinder pressure exceeds the solenoid's magnetic force
Solution Approach 1:
The patent replaces the electromagnetic solenoid-driven system with a manually operated pump handle that directly transmits mechanical force to the piston. This substitution eliminates the reliability issues associated with magnetic force variations and pressure limitations, as the manual mechanical system can provide sufficient force under all operating conditions.
Solution Approach 2:
The pump incorporates a bypass valve that automatically activates when fluid pressure exceeds a predetermined threshold. This self-regulating mechanism allows the system to protect itself from overpressure conditions without external control, maintaining reliability by preventing damage while allowing continuous operation.
2Extent of automation
If a solenoid is used to drive the piston, then reciprocating motion is achieved, but the piston speed varies with pressure variations in the suction and discharge pipes
Solution Approach 1:
The manual pump handle provides direct mechanical coupling to the piston, creating a rigid force transmission system that is insensitive to pressure variations in the fluid lines. The operator directly controls piston speed through handle motion, ensuring consistent reciprocating speed regardless of suction or discharge pressure conditions.
3Extent of automation
If the piston is driven by magnetic force, then reciprocating motion is generated, but fluid suction and discharge fail when cylinder pressure exceeds the magnetic force capability
Solution Approach 1:
The patent replaces the magnetic force-driven system with a manually operated mechanical system where the pump handle directly pushes and pulls the piston. This mechanical system can generate sufficient force to move fluid under all pressure conditions, eliminating the failure mode where magnetic force becomes insufficient at high pressures.
Solution Approach 2:
The bypass valve provides automatic pressure relief when fluid pressure exceeds predetermined levels, preventing system failure and maintaining reliable fluid transfer capability across the full operating range.
4Reliability
If a bypass path and relief valve are added to manage pressure, then pressure control is improved, but device complexity increases
Solution Approach 1:
The bypass valve is designed as a self-regulating component that automatically opens when fluid pressure exceeds a predetermined threshold and closes when pressure decreases. This eliminates the need for external control mechanisms, sensors, or complex control systems, maintaining simplicity while providing reliable pressure management.
Solution Approach 2:
The bypass valve is integrated into the existing pump body structure, utilizing available spaces and fluid passages rather than adding completely separate pressure control systems. This minimizes the increase in device complexity while providing the necessary pressure management functionality.
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 design enhances the reliability of fluid suction and discharge by maintaining consistent piston operation and pressure management, allowing for efficient fluid transfer and easy handling, even when pressures exceed predetermined levels.
Implementation Method 1
a piston which is inserted into and coupled to the high pressure side fluid supply groove and the low pressure side fluid supply groove, an upper end of the piston is connected and fixed to a handle rotatably installed between the low pressure side fluid supply grooves of the body, and by alternately and repeatedly pumping the piston using the handle, the piston alternately and repeatedly ascends and descends to supply fluids to the high and low pressure side fluid supply grooves, and pushes the fluids in the high and low pressure side fluid supply grooves to discharges the fluids through the fluid outlet of the body
Implementation Method 2
when a pressure in the low pressure side fluid supply groove is raised while a piston is uniformly pushing the fluids in the high and low pressure side fluid supply grooves, discharges fluids in the low pressure side fluid supply groove to the outside through a bypass path
Data Source
AI summary
The present invention is directed to a hydraulic double-acting hand pump in which a high and low pressure side fluid supply grooves are formed in a top surface, a fluid inlet is formed in a bottom surface, a body in which the fluid outlet is formed in a side surface is provided, a piston is inserted into and coupled to the high and low pressure side fluid supply grooves, an upper end of the piston is connected and fixed to a handle rotatably installed in the low pressure side fluid supply groove of the body, the piston alternately and repeatedly ascends and descends to supply fluids to the high and low pressure side fluid supply grooves, and the fluids are discharged through the fluid outlet of the body by pushing the fluids inside the high and low pressure side fluid supply grooves.