Pressure Compensation Valve Integrating Check Function
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Solution Overview
Problem
Existing pressure compensation valves in hydraulic circuits are complex and costly, and often cannot function as check valves or adjust compensation features effectively to manage varying compensation requirements of actuators.
Innovation Solution
A pressure compensation valve with a simple structure comprising a valve body, a valve sleeve, a spool, and a piston with a return spring, which includes a check valve for single-direction flow and a tapered groove to adjust pressure compensation features, allowing the valve to function as both a check valve and change compensation characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pressure compensation valve is provided between hydraulic reversing valves and actuators to detect and apply maximum load pressure, then the exit pressure of each hydraulic reversing valve is uniformly increased to be substantially the same as the maximum load pressure, but the structure becomes complicated and the cost increases
Solution Approach 1:
The patent combines the pressure compensation function and check valve function into a single integrated valve body. The valve body includes both the pressure compensation mechanism with piston and spring, and the check valve mechanism with ball and seat, allowing both functions to be performed by one component rather than requiring separate valves.
Solution Approach 2:
The valve body is designed to perform multiple functions simultaneously: it acts as both a pressure compensation valve and a check valve. The single valve structure can detect maximum load pressure, compensate pressure to actuators, and prevent reverse flow, making it a multi-functional component that reduces overall system complexity.
2Adaptability or versatility
If existing pressure compensation valves are used, then pressure compensation can be achieved, but they cannot function as check valves or adjust compensation features effectively
Solution Approach 1:
The patent combines the pressure compensation function and check valve function into a single integrated valve body. The valve body includes both the pressure compensation mechanism with piston and spring, and the check valve mechanism with ball and seat, allowing both functions to be performed by one component rather than requiring separate valves.
Solution Approach 2:
The valve body includes adjustable features that allow the compensation characteristics to be modified. The structure enables dynamic adjustment of pressure compensation features while maintaining the check valve function, providing adaptability to different operating conditions without requiring complete valve replacement.
3Reliability
If multiple separate valves are used for pressure compensation and check functions, then each function can be optimized, but the device complexity and cost increase
Solution Approach 1:
The patent combines the pressure compensation function and check valve function into a single integrated valve body. The valve body includes both the pressure compensation mechanism with piston and spring, and the check valve mechanism with ball and seat, allowing both functions to be performed by one component rather than requiring separate valves.
Solution Approach 2:
The valve body is designed to perform multiple functions simultaneously: it acts as both a pressure compensation valve and a check valve. The single valve structure can detect maximum load pressure, compensate pressure to actuators, and prevent reverse flow, making it a multi-functional component that reduces overall system complexity.
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 provides a cost-effective and efficient pressure compensation mechanism that can adjust effective pressure surfaces to manage pressurized liquid flow, improving the utilization rate and simplifying the structure while accurately transmitting maximum load pressure signals.
Implementation Method 1
a return spring, and the spool establishes or blocks a connection between the oil feeding chamber and an oil discharging chamber
Implementation Method 2
a check valve only allowing a single-direction flow to an LS flow channel is disposed in an oil feeding chamber of the valve body
Implementation Method 3
a load pressure Pls from the pressure chamber and the return spring act on the upper end surface of the piston to drive the piston to slide downward
Data Source
AI summary
A pressure compensation valve comprises a valve body, a valve sleeve fixedly mounted on the valve body, and a spool disposed in a valve hole of the valve body and capable of moving. The pressure compensation valve can change the pressure compensation characteristic, that is, the pressure compensation valve can change the difficult degree of the pressurized oil liquid flowing by changing an effective pressure acting surface of the pressure compensation valve The structure is simple, requires low cost, and increases the utilization rate of a product.