Threaded Cartridge Valve plays a key control role in hydraulic system, and its response speed is one of the important indicators to measure performance. The speed of response is affected by a combination of factors.
First, the structure and design of the valve core have a direct impact on the response speed. The shape, size and clearance between the valve core and the valve sleeve will determine the smoothness of liquid flow. For example, a streamlined valve core can reduce fluid resistance, thereby speeding up the response speed; while a small clearance may increase friction and slow down the response, while a large clearance may increase leakage and affect the response.
The stiffness and preload of the spring are another important factor. The function of the spring is to enable the valve core to reset quickly. A spring with a large stiffness and appropriate preload can cause the valve core to return to the initial position faster and increase the response speed. However, if the spring stiffness is too large or the preload is not appropriate, the valve core may not move flexibly, which will reduce the response speed.
The properties of the oil cannot be ignored either. The viscosity of the oil will affect its flow speed in the valve. Oil with higher viscosity has greater flow resistance, which will slow down the movement of the valve core and reduce the response speed. In addition, the cleanliness of the oil is also critical. Oil with more impurities may block the valve channel and affect the response.
The drive mode will also affect the response speed of the Threaded Cartridge Valve. Common drive modes include electromagnetic drive, hydraulic drive and manual drive. Electromagnetic drive usually has a faster response speed, while the response speed of hydraulic drive may be affected by the pressure and flow of the hydraulic system.
The internal damping of the valve will also affect the response. Appropriate damping can reduce the oscillation of the valve core, but excessive damping will delay the action of the valve core and reduce the response speed.
Furthermore, the working pressure and flow of the system are also important influencing factors. Higher working pressure can provide greater driving force, making the valve core move faster; while a larger flow means that more liquid can pass through the valve quickly, thereby speeding up the response.
For example, in a high-precision CNC machine tool hydraulic system, a Threaded Cartridge Valve was selected. Due to the reasonable design of the valve core, the use of low-viscosity clean oil, stable system working pressure and flow, and carefully adjusted spring stiffness and preload, its response speed can meet the fast and precise movement requirements of the machine tool, thus ensuring the processing accuracy and efficiency.
However, if in another hydraulic system with harsher working conditions, the oil is seriously contaminated, the viscosity is high, and the system pressure and flow are unstable, even if the threaded cartridge valve itself is well designed, its response speed will be greatly affected, which may lead to a decrease in system control accuracy or even failure.
In summary, the response speed of the threaded cartridge valve is affected by multiple factors such as valve core structure, spring characteristics, oil properties, drive mode, internal damping, and system working conditions. In practical applications, it is necessary to comprehensively consider these factors, select a suitable threaded cartridge valve, and optimize the system design to obtain ideal response speed and performance.
