Integrated Hydraulic Switching Valve for Multi-Pressure Control
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Solution Overview
Problem
Existing hydraulic switching devices for piston arrangements with multiple valves are complex, difficult to maintain, and require precise control, making them cumbersome to assemble and prone to faults.
Innovation Solution
A compact hydraulic switching device with a single housing structure featuring a circulation valve with two valve blocks and a connecting element, where both valve elements are movement-coupled and jointly pretensioned by a spring, allowing for self-controlling operation and reduced complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple separate valves are used in separate valve housings, then switching precision can be maintained, but device complexity increases and assembly becomes difficult
Solution Approach 1:
The patent combines multiple valve elements (first and second valve elements) into a single integrated valve body with a common spring chamber. The valve elements are movement-coupled through connecting elements, allowing them to function as a unified switching device rather than separate components. This merging reduces the number of separate valve housings needed while maintaining precise switching control through the coupled movement mechanism.
Solution Approach 2:
Within the integrated valve body, the patent segments the valve function into multiple independently controllable valve elements that can be selectively activated. The first valve element controls the first working pressure line while the second valve element controls the second working pressure line, allowing independent switching control for each pressure line while benefiting from the simplified single-housing structure.
2Measurement precision
If multiple separate valves are used, then switching control can be precise, but maintenance work increases
Solution Approach 1:
By integrating multiple valve elements into a single valve body with a common spring chamber and shared sealing structures, the patent reduces the number of separate components that need to be disassembled and maintained. The unified structure allows maintenance personnel to access and service all valve elements through a single housing, significantly reducing maintenance complexity compared to multiple separate valve housings.
3Adaptability or versatility
If multiple pressure pumps are used, then different working pressures can be generated, but device complexity increases
Solution Approach 1:
The patent designs the integrated valve body to control multiple pressure pumps (first and second pressure pumps) through a single switching mechanism. The valve elements can selectively connect different pump outlets to different working pressure lines, allowing one valve assembly to control the operation of multiple pumps. This multi-functional design reduces overall system complexity while maintaining the ability to generate different working pressures.
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 simplifies assembly and maintenance, reduces the risk of faults, and extends the device's service life by allowing for precise control and easy handling, while the damping mechanism further reduces wear and enhances durability.
Implementation Method 1
Both valve elements are movement-coupled via a connecting element for synchronous movement and are jointly pretensioned by a spring in a basic position in which a first valve seat is open and a second valve seat is closed
Implementation Method 2
an increase in pressure in the piston arrangement as a result of an increase in pressure on the outlet side of the second valve seat opening against the force of the spring and as a result the first valve seat in Result of the coupling of the two valve elements is closed
Implementation Method 3
a partially open position effective between a closed position and an open position is provided in at least one valve seat of the valve arrangement
Data Source
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AI summary
The device (1) has a motor-driven vacuum pump (3) for generating an operating pressure and another motor-driven pressure pump (4) is provided for generating another operating pressure. A hydraulic switching unit (5) is provided for switching from a high pressure or low pressure condition of combined operating pressures in a high pressure state. The switching device is designed as a circulating valve having valve units arranged together in a common valve block, where each valve unit has valve elements mounted in an associated valve seat.