Rotary Airlock Valve for Granular Material

The Rotary Airlock Valve for Granular Material is a standardized feeding, unloading, and airlocking device specifically designed for handling granular materials. Leveraging over 10 years of technical expertise in bulk material handling, it is designed and manufactured in strict accordance with industry standards. Focusing on the core requirements of granular material conveying-"anti-blocking, anti-breakage, and accurate metering"-it boasts advantages such as stable operation, wear resistance, easy maintenance, and wide adaptability. Perfectly suited for various working conditions including pneumatic conveying, automatic batching, and storage/unloading of granular materials, it is the preferred standardized equipment for granular material handling in industries such as grain, feed, plastics, mining, and chemicals. It can efficiently convey various regular and irregular granular materials, preventing material damage and conveying blockages.

As a key supporting equipment for granular material handling systems, this product focuses on three core functions: connecting storage equipment and conveying systems to ensure continuous and efficient operation of the production line, while balancing conveying accuracy and material integrity.

Precise quantitative conveying : Utilizing an optimized impeller structure, the flow rate of granular material is precisely controlled, achieving uniform feeding and stable unloading. It is compatible with automatic batching systems and pneumatic conveying systems, ensuring the precision of the production process, avoiding excessive or insufficient conveying of granular material, and facilitating standardized operation of the production line.

Anti-jamming and anti-breakage adaptation : The flow channel and impeller design are optimized for the characteristics of granular materials, and the impeller clearance is reasonably controlled to avoid granular material jamming and clamping. At the same time, flexible impellers or anti-breakage structures are used to reduce the squeezing and collision of granular materials during the conveying process, protect the integrity of granular materials to the maximum extent, and eliminate material breakage and loss.

Standard airlock seal : Adopting a precision sealing structure, it effectively prevents air from entering and granular material from leaking out, avoiding material waste and dust pollution in the workshop, while maintaining stable pressure in the conveying system. It is compatible with dilute phase pneumatic conveying systems to ensure smooth conveying of granular material without backflow or leakage.

1. Prevents jamming and breakage, protecting the integrity of materials.

The impeller structure design is optimized, adopting a large blade and wide flow channel design to adapt to different particle sizes (0.1-50mm), preventing particles from getting stuck between the impeller and the valve chamber. The impeller is made of a tough material, and some models use flexible blades to reduce the compression and impact on the particles, effectively preventing particle breakage. It is especially suitable for fragile particles (such as plastic particles, grain particles, and feed particles), maximizing the preservation of the original shape of the material and reducing material loss.

2. Precise quantification, suitable for standardized production.

Manufactured strictly according to industry standards, the impeller speed is uniform and controllable, and can be precisely adjusted from 10 to 35 rpm through frequency conversion speed regulation. The conveying flow is stable with an error of ≤±2%, perfectly adapting to standardized production needs such as automatic batching and quantitative feeding. The precise structural design ensures no material residue and guarantees consistent material conveying for each batch, contributing to the standardization and normalization of production line processes.

3. Wear-resistant and damage-resistant, with a longer service life.

The parts in contact with materials are made of high-quality cast iron and stainless steel (304 and 316 optional). They are specially reinforced for the friction characteristics of granular material conveying. The impeller and valve cavity surfaces are smooth and wear-resistant, effectively resisting the continuous friction and impact of granular materials and reducing equipment wear. The bearing housing adopts a sealed isolation design to prevent granular materials from entering the bearing, extend the bearing service life, and reduce the cost of replacement and maintenance in the later stage.

4. Standardized design, widely adaptable

Adopting a standardized structure and interface design, the nominal diameter covers DN50～DN300, and the interface conforms to the GB/T 9113 standard flange connection. It can be seamlessly connected with various granular material processing equipment (storage silos, pneumatic conveying systems, batching machines, conveyors) without complex modifications, and has extremely strong adaptability. It can be widely adapted to various materials such as grains, feed, plastic granules, ore granules, and chemical granules, meeting the standardized production needs of different industries.

5. Easy to disassemble and repair, low maintenance costs.

With a modular design, core components (impeller, seals) can be quickly disassembled, and daily cleaning and parts replacement do not require complicated tools, greatly saving maintenance time; the standardized configuration of vulnerable parts makes procurement and replacement convenient, and they are wear-resistant and durable, reducing the frequency of replacement; the equipment has low vibration and low noise during operation, low failure rate, and can run continuously for a long time, effectively reducing equipment downtime maintenance costs and ensuring continuous operation of the production line.

Specifically designed for pellet processing applications, strictly adhering to industry standards, and widely used in industries such as grain, feed, plastics, mining, chemicals, and building materials, especially suitable for:

• Feeding and airlocking processes in pneumatic conveying systems for granular materials, such as dilute-phase pneumatic conveying of plastic granules and grain granules;
• The quantitative feeding stage of an automated batching system, such as the pellet batching and mixing process in feed mills and food factories;
• The unloading process of storage equipment such as storage silos and hoppers, such as the smooth unloading of mineral granules and chemical granules;
• The granular material conveying and connection links of standardized production lines, such as plastic processing, grain processing, and feed production, are compatible with various granular materials ranging from 0.1 to 50 mm.

Shanghai Hanye Engineering Technology Co., Ltd. specializes in bulk material handling, adhering to the core principles of "safety, reliability, efficiency, and standardization." We provide customers with high-performance, highly reliable standardized rotary valves for granular materials and customized solutions. For detailed product specifications, compatibility information, or on-site case studies, please contact us!