Concentric Control Slide Valves for Compact Pump Pressure Regulation
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Solution Overview
Problem
Existing regulating devices for pumps with adjustable displacement volume require significant installation space due to the arrangement of control regions within the valve housing, making them bulky and inefficient in terms of space usage.
Innovation Solution
The second control slide valve is accommodated linearly within the first control slide valve, forming a compact regulating device that can be constructed as a screw-in valve, with a control region where the same pressure prevails, allowing for adjustable orifices and reduced space requirements, enabling a more compact and space-efficient design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If control regions are arranged within the valve housing, then pressure regulation function is achieved, but installation space requirement increases
Solution Approach 1:
The second control slide valve is nested within the first control slide valve, with the second valve positioned inside the bore of the first valve. This nesting arrangement allows both control regions to coexist in a compact configuration, achieving pressure regulation functionality while minimizing the overall volume of the regulating device.
Solution Approach 2:
The invention transitions from a two-dimensional side-by-side arrangement of control regions to a three-dimensional concentric arrangement. By utilizing the radial dimension and positioning control regions at different radial distances from the center axis, the patent achieves compact space utilization while maintaining all necessary pressure regulation functions.
2Reliability
If control region is arranged fully in the valve housing, then pressure control is achieved, but installation space requirement increases significantly
Solution Approach 1:
The control region is formed by a cavity within the second control slide valve, which is itself positioned within the first control slide valve. This nested cavity structure creates the necessary control region volume while utilizing the internal space of existing components, thereby achieving pressure control without proportionally increasing installation space.
Solution Approach 2:
The regulating device is segmented into multiple functional zones: the first control slide valve handles primary pressure regulation, while the second control slide valve with its internal cavity handles secondary control functions. This segmentation allows each component to be optimized for its specific function while contributing to overall compactness.
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
This configuration results in a significantly smaller regulating device that can be easily integrated into pump housings, requiring less space while maintaining effective pressure regulation, thus enhancing mobility and accessibility.
Implementation Method 1
The control region is here preferably constituted by a continuous spatial region, in which the same pressure prevails everywhere
Implementation Method 2
The pressure at the inflow port can impinge on the first control slide valve in the direction of a diminution of the second orifice. The pressure at the inflow port can impinge on the second control slide valve in the direction of a diminution of the fourth orifice
Data Source
AI summary
A regulating device for use with a pump that has a hydraulically adjustable displacement volume, wherein the regulating device includes an inflow port, a return flow port, an actuating port, a control port, a first control slide valve, and a second control slide valve. The first control slide valve is linearly movable with respect to a center axis, the first control slide valve defining first and second orifices, which are adjustable jointly and in opposite directions. The second control slide valve is linearly movable and defines third and fourth orifices, which are adjustable jointly and in opposite directions. The second control slide valve is accommodated in a linearly movable manner within the first control slide valve.