Control Valve Integrating On/Off Valve to Reduce Parts
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Solution Overview
Problem
Conventional control valve devices require a separate sub-block for the on/off valve, increasing the number of parts and enlarging the device.
Innovation Solution
The control valve device integrates the on/off valve directly into the valve body, using a spool and relief passage configuration that allows communication between the actuator port and relief passage without a sub-block, minimizing space and parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a separate sub-block is provided for the on/off valve, then the on/off valve can be provided, but the number of parts is increased and the device is enlarged
Solution Approach 1:
The on/off valve is integrated directly into the valve body by forming an assembling hole within the valve body structure. This merging of the on/off valve and valve body eliminates the need for a separate sub-block, reducing the number of parts while maintaining the on/off valve functionality.
2Adaptability or versatility
If a separate sub-block is provided for the on/off valve, then the on/off valve can be provided, but the device is enlarged
Solution Approach 1:
The on/off valve is integrated directly into the valve body by forming an assembling hole within the valve body structure. This merging of the on/off valve and valve body eliminates the need for a separate sub-block, reducing the number of parts while maintaining the on/off valve functionality.
Data Source
AI summary
A control valve device includes a valve body having an actuator port connected to an actuator and a relief passage configured to allow the actuator port to communicate with a return passage, a spool slidably assembled into the valve body and configured to allow the actuator port to selectively communicate with a supply side or a return side, a relief valve configured to open/close the relief passage to control pressure of the actuator port, and an on/off valve assembled into an assembling hole which is formed in the valve body. The on/off valve configured to allow the actuator port to communicate with the relief passage through the assembling hole at the time of valve open.