Actuator Valves  Electro-hydraulic Push RodGate valve

PZ Series Electric-Hydraulic Push Rod Plate Sluice Gate (abbreviated as Electric-Hydraulic Push Rod) is suitable for reciprocating linear (or reciprocating rotational) motion. It is a primary control equipment for flow and conveying volume of powdery, granular, and small piece materials. It can also be used in long-distance and high-altitude hazardous areas, and can be networked with computers for centralized (programmed) control. It is now widely used in industries such as metallurgy, mining, coal, electricity, machinery, grain, cement, chemicals, water conservancy, and transportation, serving as an indispensable general power source.

Section II: Principle and Functionality:

　　1. Working Principle: The electro-hydraulic push rod is powered by an electric motor, which rotates forward (or reverse) to pump hydraulic oil through a bidirectional gear pump, generating pressure oil. The oil then flows through an integrated oil path block to the working cylinder, achieving reciprocating motion of the piston rod.

　　2. Overload Automatic Protection Function: During the operation of the electro-hydraulic push rod, if the external force on the piston rod exceeds the rated output force or the piston reaches the end position, and the motor continues to rotate, the oil pressure in the circuit will rise to the set pressure. The overflow valve will then quickly and accurately overflow, achieving automatic overload protection. Although the motor is rotating, it will not be damaged.

　　3. Self-locking Function: The hydraulic push rod's oil circuit module is designed with a pressure self-locking mechanism. When the motor stops rotating, the piston rod immediately remains at a certain position, and the pressure oil remains in a pressure-holding state.