Zoomlion Concrete Pump Truck Accessories Electro-hydraulic Directional Valve H

Product Specification

Design and Structure

Valve Body: Constructed from high-quality, durable alloy materials, the valve body is designed to endure high-pressure and high-stress conditions. It provides a robust and stable framework for the valve's operation within the concrete pump truck's hydraulic system, which often operates under extreme pressures and harsh environments.

Electro-hydraulic Actuation System: Comprises a high-performance electromagnetic coil and a sophisticated hydraulic pilot mechanism. The electromagnetic coil is designed for rapid response and high reliability, generating a strong magnetic force when energized. The hydraulic pilot mechanism utilizes hydraulic pressure to precisely control the movement of the main spool, providing smooth and accurate operation.

Sealing Assembly: Equipped with an advanced sealing system using top-grade sealing materials. These seals are capable of effectively preventing hydraulic oil leakage even under high-pressure and high-frequency operation conditions. They exhibit excellent resistance to wear, chemical corrosion from hydraulic oil, and aging, ensuring the valve's long-term performance and efficiency.

Working Principle

Electromagnetic Control: When an electrical signal is applied to the electromagnetic coil, it generates a magnetic field that attracts the armature. This action activates the pilot valve, allowing hydraulic oil to flow into the pilot chamber of the main valve.

Hydraulic Actuation: The pressure difference created in the pilot chamber by the hydraulic oil then drives the main spool to move. By precisely controlling the electrical signal's magnitude and duration, the spool's position can be accurately adjusted. This, in turn, controls the flow direction and rate of the hydraulic fluid in the main circuit.

Flow Control: The specific spool design in the H-4WEH25E6X/6HG24N9K valve enables precise control of the hydraulic fluid's flow. Depending on the spool's position, different ports in the valve body are connected or disconnected, allowing the hydraulic fluid to flow in different directions and at different rates. This precise control is essential for the accurate operation of various hydraulic components in the concrete pump truck.

Performance Features

High Pressure Capability: The H-4WEH25E6X/6HG24N9K is engineered to handle high hydraulic pressures encountered in the operation of concrete pump trucks. It can operate stably under the demanding high-pressure conditions required for concrete pumping, providing reliable power transmission for the hydraulic system.

Precise Flow Regulation: With its advanced design and high manufacturing precision, this valve offers excellent flow control accuracy. It ensures the smooth and precise operation of the pump truck's hydraulic components, which is crucial for the accurate positioning and movement of the boom and other key parts.

Rapid Response: The electro-hydraulic control mechanism endows the valve with a fast response time, enabling quick changes in the hydraulic fluid's flow direction and rate. This rapid response is vital for the efficient operation of the concrete pump truck, allowing it to promptly adapt to different working conditions and operator commands.

High Reliability: The combination of high-quality materials, advanced design, and precise manufacturing processes makes the H-4WEH25E6X/6HG24N9K valve highly reliable. It can operate continuously and stably in harsh working environments, reducing maintenance and replacement frequencies and enhancing the overall operational efficiency of the concrete pump truck.