Brief Introduction

The Rotary Discharge Valve (also known as a rotary feeder or star valve) is a key device widely used in pneumatic conveying systems and powder handling processes. Through the continuous rotational movement of the rotor within the valve chamber, it achieves quantitative discharge and airtight conveying of powdered and granular materials. The precisely designed minimal clearance between the rotor and valve body ensures continuous feeding while effectively isolating upstream and downstream pressure differences.

The equipment is manufactured from wear-resistant steel or stainless steel, equipped with a precision bearing system and specialized shaft seals. Standard models have handling capacities ranging from 0.1 to 200 cubic meters per hour, pressure resistance up to 0.1 MPa, and an applicable temperature range from -40°C to 300°C. They can be fitted with explosion-proof motors and variable frequency drives to meet precise control requirements in various working conditions.

Features

1. Excellent Airtight Performance

Precision clearance design ensures up to 99.5% airlock efficiency

Effectively isolates pressure fluctuations in the conveying system

Prevents gas backflow and material reflux

2. Stable Quantitative Conveying

Constant discharge volume per rotor revolution, with accuracy up to ±2%

Variable frequency speed control enables precise flow regulation

Smooth operation prevents material breakage and degradation

3. Outstanding Wear Resistance

Hardened rotor and shell extend service life by over 30%

Suitable for handling abrasive materials like cement and minerals

Maintains performance over long-term operation

4. Wide Applicability

Handles materials from fine powders to small granules

Adaptable to various industrial environments and requirements

Multiple sealing options for different material characteristics

5. Low Maintenance Requirements

Simple structure facilitates quick disassembly and cleaning

Standardized components reduce spare part costs

Self-lubricating bearings minimize maintenance frequency

Application Scenarios

Chemical Industry: Plastic pellet conveying, catalyst addition, raw material feeding

Food Processing: Flour metering, sugar powder conveying, food additive feeding

Pharmaceutical Industry: API conveying, excipient metering, intermediate transfer

Building Materials: Cement conveying, fly ash handling, dry mortar feeding

Environmental Engineering: Dust collection systems, fly ash treatment, material recovery