High Pressure Rotary Airlock Valve for Granular Material

The High Pressure Rotary Airlock Valve for Granular Materials is a core piece of equipment specifically designed for high-pressure pneumatic conveying and high-pressure feeding applications. Focusing on the core requirements of "precise airlock, anti-breakage, high pressure resistance, and high wear resistance" for granular materials under high pressure, it leverages the company's years of experience in high-pressure conveying technology and is manufactured strictly according to high-pressure equipment design specifications. It can stably adapt to PN6~PN40 high-pressure conditions, with a maximum pressure resistance of 4.0MPa. It is perfectly suited for high-pressure, long-distance conveying of various particle sizes, including plastic granules, grain granules, chemical granules, and slag granules. It is an essential component of high-pressure granular material handling systems in industries such as new energy, chemicals, building materials, grain processing, and mining, completely solving industry pain points such as leakage, material breakage, and equipment wear under high pressure.

As a key hub in high-pressure granular material conveying systems, this product's three core functions work together to connect storage equipment and high-pressure conveying pipelines, ensuring stable high pressure and efficient conveying while maintaining material integrity and production safety.

High-pressure airlock seal : Adopting a triple dynamic sealing structure combined with precision gap optimization design, a high-strength high-pressure airtight barrier is constructed to effectively prevent high-pressure gas backflow and particle leakage. The air leakage rate is ≤0.3%, maintaining the pressure stability of the high-pressure conveying system and avoiding air pressure imbalance that affects conveying efficiency. At the same time, it eliminates dust leakage and safety hazards, meeting industrial safety and environmental protection requirements.

High-pressure and high-efficiency feeding : Equipped with a dedicated high-pressure reducer and optimized impeller structure, the uniform rotation accurately pushes the granular material in the storage bin to the high-pressure conveying pipeline. The speed can be precisely adjusted from 10 to 25 rpm through frequency conversion speed regulation, adapting to different particle sizes and conveying requirements. It achieves efficient mixing of granular material and high-pressure gas, and the conveying efficiency is more than 30% higher than that of ordinary high-pressure equipment. It is suitable for various high-pressure conveying processes such as dilute phase and dense phase.

Anti-breakage and anti-blocking : The flow channel and blade design are optimized for the impact characteristics of granular materials under high pressure conditions. A wide flow channel and flexible buffer impeller structure are adopted to prevent the granular materials from being squeezed and broken by collision during high pressure pushing, thus preserving the integrity of the materials to the maximum extent. At the same time, the clearance between the impeller and the valve body is optimized to reduce the jamming and clamping of granular materials. It is suitable for granular materials with a diameter of 0.5~50mm and eliminates the need for material blockage and shutdown.

1. Withstands ultra-high pressure, with a robust and impact-resistant structure.

The valve body is precision forged from high-strength cast steel, wear-resistant alloy, or stainless steel (CF8/CF8M optional). After mechanical strength optimization and high-pressure fatigue testing, it can stably withstand high-pressure conditions from PN6 to PN40, and is suitable for high-pressure transmission up to 4.0MPa. It does not deform or crack under long-term high pressure. The overall heavy-duty structural design can effectively resist the high-speed impact of high-pressure gas and granular materials, and complies with the GB/T 12224 high-pressure equipment design specification, ensuring long-term stable operation of the equipment.

2. Anti-breakage design, extremely low material loss.

The core impeller is made of wear-resistant alloy or food-grade stainless steel (selectable as needed), and the blades are rounded for cushioning. Combined with a wide flow channel design, it reduces the probability of compression and collision during the conveying of granular materials, with a breakage rate of ≤0.5%. It is especially suitable for fragile particles (such as plastic particles, grain particles, and chemical raw material particles). The impeller rotation speed is precisely controllable, avoiding material damage caused by high-speed rotation and reducing material waste costs from the source.

3. High wear resistance and damage resistance, suitable for various types of high-pressure particles.

The parts in contact with materials are made of high-chromium cast iron, wear-resistant alloy steel, or lined with tungsten carbide ceramic. The impeller blades are hardened with carbide (HRC≥55). They are specially reinforced to withstand the high-speed scouring and wear characteristics of granular materials in high-pressure conveying, effectively resisting long-term wear and significantly extending the service life of the equipment. The bearing housing adopts an isolated sealing design, away from the contact area between materials and high-pressure gas, and is equipped with a high-temperature lubrication system to prevent granular materials from entering the bearing and causing jamming, thus extending the life of core components.

4. Precise sealing ensures zero leakage under high pressure.

It adopts a triple dynamic sealing structure of "main seal + secondary seal + emergency seal". The seals are made of high-pressure resistant and wear-resistant PTFE/FKM material. Some models use structural ceramic sealing pairs. The sealing surface is precision ground to achieve ANSI Class VI zero leakage. The seals can be adaptively fine-tuned under high pressure. The higher the pressure, the tighter the seal fit. It completely eliminates high-pressure gas backflow and particulate material leakage, ensuring workshop cleanliness and production safety.

5. Wide compatibility, easy installation and debugging

The nominal diameter covers DN65~DN350, and the interface adopts the GB/T 9113 high-pressure flange standard, which can be seamlessly connected with various high-pressure pneumatic conveying systems, storage silos, and metering equipment. It supports horizontal/vertical installation without complicated modification; it is suitable for materials with multiple particle sizes from 0.5 to 50mm, such as plastic granules, grain granules, slag granules, and chemical powder granules, and is compatible with dilute phase and dense phase high-pressure conveying processes, with extremely strong adaptability.

6. Intelligent operation and maintenance, reducing long-term costs

Driven by a cycloidal pinwheel high-pressure reducer, the equipment runs smoothly and at a uniform speed. An overload protection device monitors the operating status in real time and automatically warns of abnormal conditions to prevent equipment damage. The core components are modularly designed, and vulnerable parts such as impellers and seals can be quickly disassembled and replaced without the need for special tools, reducing maintenance time by more than 50%. All vulnerable parts are standardized configurations, making procurement convenient and significantly reducing downtime maintenance costs and labor input.

Specifically designed for high-pressure granular material conveying and feeding applications, it is widely used in new energy, chemical, building materials, grain processing, mining, and plastics processing industries, and is especially suitable for:

Shanghai Hanye Engineering Technology Co., Ltd. specializes in the field of high-pressure material conveying, focusing on the pain points of handling high-pressure granular materials. With "high-pressure stability, high-efficiency conveying, low consumption, and durability" as its core principles, it provides customers with highly reliable and adaptable High Pressure Rotary Airlock Valve for Granular Materials and related solutions. For detailed parameters, operating condition adaptation solutions, or on-site case studies, please feel free to contact us!