Electro-hydraulic Jaw Discharge Valve

The Electro-hydraulic Jaw Discharge Valve is a heavy-duty,flow-control device engineered for bulk material handling systems,specifically designed for silo,hopper,and chute discharge applications.Combining electro-hydraulic actuation with a robust jaw-style gate mechanism,this valve delivers powerful,precise,and reliable material shut-off and regulation for coal,ore,ash,grain,and other granular or powdery solids.It is widely adopted in power plants,metallurgy,mining,cement,and chemical industries as a critical component for automated material discharge and conveying systems.

Structure and Working Principle

The valve consists of a welded carbon steel body,two symmetric Fan shaped gate (sector jaw plates),gear and crank mechanisms,sealing components,and an integrated electro-hydraulic push rod(DYT series).The electro-hydraulic actuator converts electrical energy into hydraulic power,generating linear reciprocating motion.This motion is transmitted through a crankshaft and pinion gears,driving the two jaw plates to rotate synchronously around the axis,opening or closing the discharge port in a scissor-like movement.When fully open,the jaw plates swing outward to create a wide,unobstructed passage with no material dead corners,ensuring smooth and efficient discharge.When closed,the precision-machined sealing surfaces of the jaw plates form a tight shut-off,preventing material leakage and dust escape.

Key Features

Heavy-Duty Construction:Fabricated from high-quality mild steel plates,the valve body offers exceptional structural rigidity,impact resistance,and wear resistance,suitable for heavy loads and harsh industrial environments.

Powerful Electro-Hydraulic Actuation:The electro-hydraulic system provides high thrust,smooth operation,and infinitely adjustable speed,enabling precise flow regulation and reliable performance under heavy material loads.It also features overload protection and a hydraulic lock function,preventing damage from overpressure and ensuring the jaw plates stay in position even during power outages.

Anti-Blocking Design:The large,curved jaw plates and symmetrical opening/closing action minimize material accumulation and clogging,making it ideal for sticky,moist,or abrasive bulk materials.

Automation Compatibility:Supports remote control,PLC integration,and automatic operation,reducing manual labor and improving system efficiency.It can be equipped with limit switches for position feedback and interlock control.

Easy Maintenance:Simple structure with few wearing parts,bolted connections for easy disassembly and replacement,and low long-term maintenance costs.

Applications

The Electro-hydraulic Jaw Discharge Valve is designed for handling bulk solids with a bulk density≤2.5t/m³,including coal,coke,ore,ash,cement,and chemical powders.It is commonly installed at the bottom of hoppers,silos,and bunkers in:

Thermal power plants(coal and ash handling systems)

Metallurgical plants(ore and slag discharge)

Mines(mineral processing and loading)

Cement and building material factories

Chemical and fertilizer plants

Technical Advantages

Compared to traditional manual or pneumatic discharge valves,the electro-hydraulic jaw type offers higher thrust,faster response,more precise flow control,and better adaptability to heavy-duty and automated working conditions.Its durable design and reliable performance ensure long-term,trouble-free operation,making it a cost-effective solution for modern bulk material handling systems.