Quick-clean rotary airlock valves

Working Principle

The material stored in the upper hopper flows into the rotor pockets under the force of gravity. As the rotor continuously rotates, the material is discharged in a controlled and continuous manner at the outlet. Therefore, the rotary valve enables precise metering and continuous discharge of bulk solid materials.

It is widely used for conveying granular, powder, and other bulk solid materials. In both positive pressure conveying systems and vacuum conveying systems, the rotary valve provides a uniform and stable feed into the conveying pipeline, ensuring consistent material flow and stable conveying velocity, which guarantees reliable system operation.

As a simple and efficient feeding device, the rotary airlock valve features stable operation, easy rotor removal, and convenient cleaning. It is suitable for handling powders and granules and is widely applied in industries such as lithium battery production, chemical processing, food, and pharmaceutical powder handling.

In addition, the rotary valve is equipped with a gas sealing system. By introducing sealing gas into the rotor sealing area, a stable gas barrier is formed, effectively preventing material leakage and eliminating gas crossover between different pressure zones. This ensures reliable performance under both positive pressure and vacuum conveying conditions.

Technical Specification

▪ Size: DN150–DN300

▪ Working Pressure: -0.1 MPa to 0.15 MPa

▪ Actuator: Gear motor (standard)

▪ Working Temperature: -20°C to +150°C

▪ Material (Metal Parts): 316L / 304 stainless steel (wetted parts)

 304 stainless steel (non-wetted parts)

▪ Sealing Material: Fluoroelastomer (FKM), complies with FDA 21 CFR 177.2660 (standard)

▪ Surface Finish: Ra < 0.4 μm (wetted parts)

▪ Pressure Type: Non-airtight / non-pressure-tight design (standard)

▪ Connection Standards: GB PN10 / ANSI 150# / DIN PN10 / JIS 10K / HG20592

▪ Connection Type: Flanged connection