HEFEI XULONG MACHINERY CO., LTD.

परिचय

Hefei Xulong Machinery Co., Ltd. (Chinese: 合肥旭龙机械有限公司) is a Chinese manufacturer of equipment for bulk-solid handling, powder processing, and pneumatic conveying. Based in Shuangdun Town, Hefei, Anhui Province, the company operates as the powder-equipment division of the broader Xulong business, whose activities also include industrial valves and emergency eyewash and shower equipment.

The company supplies components used to control, feed, divert, discharge, and transport powdered and granular materials through industrial process systems. Its product range includes rotary valves, rotary feeders, diverter valves, slide valves, reversing valves, and equipment for unpacking powder-containing bags. These technologies are relevant to plastics processing because polymer producers, compounders, masterbatch manufacturers, and other plastics plants depend on reliable conveying and metering systems for resin pellets, additives, powders, and regrind.

Xulong’s development reflects the expansion of China’s industrial equipment sector since the 1980s. The company’s position is primarily that of a specialized equipment manufacturer rather than a plastics-materials producer or a complete plastics-processing machinery group. Its market significance lies in the supporting infrastructure required for continuous, enclosed, and controlled handling of bulk materials across chemical, petrochemical, food, pharmaceutical, and related industries.

History and Development

The Xulong brand was established in the 1980s. The group subsequently developed activities in industrial valves, safety spray and eyewash equipment, and bulk-material handling machinery.

Key development milestones include:

• 1980s: Establishment of the Xulong brand and the beginning of its industrial equipment activities.
• Formation of the Hefei operation: Hefei Xulong Machinery was established as the group’s specialized powder-equipment and pneumatic-conveying business in Anhui Province.
• Expansion of bulk-solids capabilities: The Hefei facility developed products for powder unpacking, rotary feeding, material diversion, and pneumatic conveying, broadening the company’s role from valve manufacture to integrated bulk-material handling equipment.
• Recognition as a technology-oriented enterprise: Company and exhibition materials identify the business with Chinese enterprise classifications including “specialized, sophisticated, distinctive, and innovative” enterprise status and recognition as a high-technology enterprise.

The Hefei subsidiary is distinct from Zhejiang Xulong Machinery Industry Co., Ltd., the group entity associated with petrochemical and fire-service valves and emergency safety equipment. Hefei Xulong focuses on equipment for powder media and pneumatic conveying.

Business Operations and Organizational Position

Hefei Xulong’s core activities comprise the design, development, manufacture, and supply of equipment for handling bulk solids. Its business can be understood through four principal functions:

• Material discharge: Devices that release powders or granules from hoppers, silos, bags, and other storage systems.
• Feeding and metering: Rotary valves and feeders that regulate the movement of bulk material into downstream equipment.
• Routing and isolation: Diverter, reversing, slide, and related valves used to direct material between pipelines or process destinations.
• Pneumatic conveying support: Components for systems that move powders or granules through pipelines using air or another gas.

Company information describes the Hefei facility as occupying approximately 9,000 square metres, with around 3,000 square metres of production buildings and stated annual production capacity of approximately RMB 80 million. A separate commercial listing gives a different annual-output description, illustrating that capacity figures can vary according to reporting scope, exchange rates, or the definition of production capacity.

The company operates within a wider Xulong structure that includes a headquarters operation in Wenzhou and another manufacturing company in Shandong. The Hefei entity is the group’s main powder-equipment business.

Products and Technologies

Rotary valves and rotary feeders

Rotary valves, also called rotary airlocks, are used to discharge or feed bulk material while helping maintain pressure differences between sections of a conveying or processing system. Xulong lists several rotary-valve and rotary-feeder models, including VH, WH, ZG, and YK series equipment.

In plastics-related applications, such devices can be installed below:

• Resin and additive silos
• Cyclone separators and dust-collection equipment
• Drying and blending systems
• Compounding auxiliary equipment
• Pellet conveying and storage systems
• Powder dosing and discharge stations

The engineering requirements normally include controlled throughput, resistance to abrasion, suitable sealing performance, and compatibility with the conveyed material. Product selection depends on particle size, bulk density, temperature, pressure differential, moisture sensitivity, and the required feed rate.

Diverter and reversing valves

The company’s listed equipment includes plunger, plate, ball, and double-knife reversing valves. These components are used to redirect material flows between different conveying lines or processing destinations.

Diverter-valve design is particularly important where a plant must:

• Switch between multiple silos or storage vessels
• Send material to alternative production lines
• Isolate equipment during maintenance
• Prevent cross-contamination between grades
• Handle materials with different flow or wear characteristics

For plastics manufacturers, conveying-line cleanliness and reliable switching are significant operational concerns because contamination between polymer grades, colours, additives, or recycled and virgin materials can affect product quality.

Slide valves and isolation equipment

Xulong also lists slide valves, including HE-series equipment, for isolation and flow control. Slide valves are commonly placed at the outlets of silos, hoppers, filters, and conveying systems. They may be used as shut-off devices or in combination with feeders and rotary valves.

The suitability of a slide valve depends on the geometry and characteristics of the bulk material. Fine powders may require attention to sealing and leakage control, while abrasive materials may demand wear-resistant construction and replaceable components.

Powder bag-opening equipment

The company identifies powder-equipment bag openers as a dedicated product area. Bag-opening systems are used to transfer powdered materials from sacks or bags into a contained process stream. Such equipment can reduce manual handling and support dust control when integrated with extraction, filtration, and downstream conveying equipment.

For plastics and chemicals, typical materials may include powdered additives, pigments, fillers, stabilizers, and processing aids. The design may need to address dust generation, operator exposure, material bridging, and the safe emptying of bags into receiving hoppers.

Pneumatic-conveying components

The company describes its principal specialization as pneumatic-conveying components and equipment for powder media. Pneumatic conveying generally involves moving bulk solids through pipelines using dilute-phase or dense-phase air transport. Supporting components may include:

• Rotary airlocks and feeders
• Pipeline diverters
• Pressure-isolation valves
• Discharge and receiving equipment
• Silo and hopper outlet assemblies
• Bag-unloading interfaces

System performance depends on conveying velocity, air-to-solids ratio, pressure loss, pipeline layout, particle characteristics, and the prevention of blockages or excessive degradation. In polymer handling, excessive conveying energy can contribute to pellet fracture or fines generation, while inadequate velocity can cause settling and plugging.

Applications and End Markets

Hefei Xulong serves industrial sectors that handle powders, granules, pellets, and other bulk solids. Reported application areas include:

• Petrochemicals: Conveying and controlling catalyst, resin, powder, and additive streams.
• Plastics and polymer processing: Feeding and transferring pellets, fillers, pigments, masterbatch ingredients, and regrind.
• Chemical manufacturing: Handling powdered raw materials and intermediate products.
• Food and ingredients: Moving dry powders and granular ingredients in enclosed process systems.
• Pharmaceutical production: Supporting controlled material transfer where containment and cleanability are important.
• Building materials and minerals: Handling dry, abrasive, or high-density bulk materials.
• Agriculture and related processing: Conveying powders, granules, and dry formulated products.

Commercial listings identify the company’s equipment categories as including rotary vane feeders, conveying systems, storage and loading equipment, packaging and filling equipment, and valves used in bulk-solid processing.

Within the plastics industry, Xulong generally occupies an upstream equipment-support position. It does not manufacture polymer resin or finished plastic products; instead, it supplies machinery and components that can form part of the material-preparation and conveying infrastructure surrounding extrusion, compounding, blending, drying, and storage.

Global Presence and Market Position

Hefei Xulong is headquartered in China and has an export-oriented industrial profile. Commercial information identifies Southeast Asia and East Asia among its markets, while international exhibition records show the company’s participation in events associated with chemical processing and bulk-material technology.

The company’s market position is based on specialization in pneumatic-conveying components and bulk-material valves rather than on a broad portfolio of plastics-processing machines. Its competitive environment includes Chinese manufacturers of rotary airlocks, diverter valves, slide gates, feeders, and conveying systems, as well as international suppliers of process valves and powder-handling equipment.

Several factors shape its competitive position:

• Compatibility with Chinese industrial standards and project requirements
• Ability to provide customized or non-standard equipment
• Integration of valves with conveying and unloading systems
• Manufacturing cost and delivery considerations
• Technical support for chemical and petrochemical applications
• Reliability under continuous-duty and abrasive-service conditions

A commercial company profile identifies customers or application references associated with petrochemical, chemical, food, and industrial enterprises, including China Petrochemical Corporation, China National Petroleum Corporation, Angel Yeast, and BASF. Such references indicate the sectors in which the company seeks to operate, but they should not by themselves be interpreted as evidence of uniform procurement volume or market share.

Research and Development

Research and development at Hefei Xulong is closely connected with the engineering of bulk-material equipment. The company describes itself as engaged in the design and development of powder-media and pneumatic-conveying equipment, while commercial information identifies customized and original-equipment manufacturing capabilities.

Relevant development priorities include:

• Improving sealing performance in rotary and isolation valves
• Matching equipment geometry to different particle-flow properties
• Increasing wear resistance for abrasive materials
• Reducing material retention and cross-contamination
• Adapting equipment to pressure, temperature, and throughput requirements
• Integrating valves with bag unloading, silo discharge, and conveying systems

For plastics processors, research priorities are influenced by the growing diversity of material streams. Virgin resin, recycled polymers, flame-retardant compounds, mineral-filled formulations, and fine additives can impose different requirements on conveying equipment. Equipment that performs satisfactorily with free-flowing pellets may require modification when used with cohesive powders or materials that generate significant dust.

Sustainability and Environmental Considerations

Bulk-material handling equipment can contribute to environmental performance by supporting enclosed transfer systems, reducing spillage, and limiting dust emissions. Bag-opening and pneumatic-conveying systems may be integrated with dust extraction and filtration equipment to improve workplace containment and material recovery.

In plastics manufacturing, efficient conveying can also support:

• Reduced loss of valuable polymer and additives
• Cleaner handling of recycled feedstocks
• Better segregation of different material grades
• More consistent dosing and lower off-specification production
• Enclosed transfer of dusty powders and fillers

The environmental performance of a conveying system depends on the complete installation rather than on a single valve. Fan or blower energy, pressure losses, leakage, filter loading, cleaning requirements, maintenance practices, and the prevention of product degradation all influence total resource consumption.

The company’s equipment is therefore relevant to broader plastics-industry efforts to increase the use of recycled materials and improve process efficiency, although the machinery itself does not determine whether a polymer product is recyclable or sustainably sourced.

Quality Management and Certifications

Commercial company information identifies Hefei Xulong with ISO 9001 quality-management certification. The company is also listed in exhibition information with Chinese government-recognized “specialized, sophisticated, distinctive, and innovative” enterprise status.

Quality considerations for bulk-material valves and conveying components include:

• Dimensional accuracy and assembly consistency
• Pressure and leakage performance
• Material compatibility
• Wear resistance
• Surface finish and cleanability
• Actuator and control-system reliability
• Traceability of components and maintenance parts

Certification provides a framework for documented quality processes, but the performance of equipment in service also depends on correct specification, installation, commissioning, and maintenance. This is particularly relevant in plastics plants, where material properties can vary considerably between grades and formulations.

Innovations and Future Outlook

Hefei Xulong’s future development is likely to be influenced by several structural trends in the plastics and process-equipment industries:

• Growth in polymer compounding and specialty materials
• Expansion of recycled-polymer processing
• Greater use of enclosed systems for powders and additives
• Demand for reduced dust emissions and improved operator safety
• Increasing automation of silo management, feeding, and material routing
• Need for equipment capable of handling more variable feedstocks

Potential areas for product development include sensor-assisted monitoring, automated valve actuation, improved wear-resistant materials, modular bag-unloading systems, and more energy-efficient pneumatic-conveying configurations. Digital monitoring could help operators identify leakage, abnormal pressure changes, feeder irregularities, and developing blockages before they interrupt production.

The company’s principal strategic challenge is to balance standardization with customization. Standardized components can improve manufacturing efficiency and spare-parts availability, whereas chemical, petrochemical, and plastics projects often require equipment adapted to particular material properties, process pressures, cleanliness requirements, and plant layouts.

Summary

Hefei Xulong Machinery Co., Ltd. is an Anhui-based Chinese manufacturer specializing in bulk-solid handling and pneumatic-conveying equipment. Its principal products include rotary valves, rotary feeders, diverter and reversing valves, slide valves, and powder bag-opening equipment.

The company forms part of the broader Xulong industrial group and focuses more narrowly on powder and bulk-material systems than its affiliated activities in petrochemical, fire-service, and emergency-safety equipment. Its products serve chemical, petrochemical, food, pharmaceutical, building-material, and plastics-related operations.

Within the global plastics ecosystem, Hefei Xulong occupies the supporting-equipment segment. Its technologies address the practical requirements of feeding, routing, isolating, and conveying polymer materials and additives. The company’s continued development will depend on equipment reliability, customization capability, export reach, integration with automated process systems, and the industry’s evolving requirements for dust control, recycled-material handling, energy efficiency, and production consistency.

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  CPS+ eMarketplace. (n.d.). HEFEI XULONG MACHINERY CO., LTD.HEFEI XULONG MACHINERY CO., LTD.. CPS+ eMarketplace. https://www.chinaplasonline.com/eMarketplace/ExhibitorInfo?CompId=1030487Link