Design and Structure
Valve Body: Constructed from high-quality, durable materials, typically a special alloy steel, the valve body is designed to withstand the high pressures and harsh working conditions in a concrete pump truck's hydraulic system. Its robust structure ensures long-term reliability and stability, even under continuous heavy-duty operations.
Electromagnetic Actuator: Equipped with a high-performance electromagnetic actuator, this valve can precisely control the movement of the spool. The actuator is designed to work with specific electrical signals, converting electrical energy into mechanical force with a rapid and accurate response. It features excellent heat dissipation and electromagnetic shielding to resist interference, ensuring stable and reliable operation in various electromagnetic environments.
Sealing System: The valve incorporates a state-of-the-art sealing system made of advanced polymer materials. These seals effectively prevent hydraulic fluid leakage, even under high pressure and high-frequency operation. They are highly resistant to wear, aging and the chemical effects of the hydraulic fluid, maintaining the valve's performance and efficiency over an extended service life.
Working Principle
Electromagnetic Control: When an electric current is applied to the electromagnetic coil of the actuator, a strong magnetic field is generated. This magnetic field attracts the armature, which is connected to the valve spool, causing the spool to move within the valve body. By precisely controlling the on/off state and the magnitude of the current, the position of the spool can be accurately adjusted to achieve the desired control of the hydraulic fluid flow.
Flow Regulation: Depending on the position of the spool, the valve controls the direction and flow of the hydraulic fluid. In different spool positions, it connects or disconnects different ports, allowing the hydraulic fluid to be directed to the appropriate components in the concrete pump truck's hydraulic system, such as cylinders and motors, to drive the movement of the pump truck's boom, chute and other components.
Performance Features
High Pressure Resistance: The SDHE-0631/2/A-10S is designed to handle high hydraulic pressures commonly encountered in concrete pump truck applications. It can operate stably at pressures that are typical for pumping concrete and performing other heavy-duty operations, providing the necessary power and reliability for the pump truck's hydraulic system.
Accurate Flow Control: With its advanced design and high manufacturing precision, this valve offers excellent flow control capabilities. It can precisely adjust the flow rate of the hydraulic fluid, ensuring smooth and accurate operation of the pump truck's hydraulic components. This precision is crucial for the precise positioning and movement of the boom and chute, enabling efficient and accurate concrete placement.
Rapid Response: The valve has a short response time, allowing for quick changes in the direction and flow of the hydraulic fluid. This rapid response is essential for the efficient operation of the concrete pump truck, enabling it to quickly adapt to different working conditions and operator commands, improving the overall operational efficiency and productivity.
Low Leakage: Thanks to its reliable sealing system, the SDHE-0631/2/A-10S has a very low leakage rate. This helps to maintain the efficiency of the hydraulic system by minimizing energy loss due to leakage and ensuring that the hydraulic power is effectively transmitted to the actuators, thereby improving the overall energy efficiency of the pump truck.
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Zoomlion Concrete Pump Truck Accessories Electromagnetic Directional Valve SDHE-0631/2/A-10S Images
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