Pneumatic Vacuum Conveying System - Auxiliary Conveyor for Small Granules & Powders

Keypack Intelligent Pneumatic Vacuum Conveying System - Auxiliary Conveyor for Small Granules & Powders is a material lifter designed for dust-free granule transport and closed-loop powder conveying in pharmaceutical, food, and chemical processing applications. It delivers conveying capacity from 350L/h to 3000L/h across four models (QVC-1 to QVC-4) with food-grade stainless steel construction and GMP-compliant design. Ideal for tablet press feeding, capsule filling machine material transfer, and dry granulator powder dosing in pharmaceutical manufacturing and food processing facilities.

Product Overview

This pneumatic vacuum conveying system operates by utilizing compressed air passing through a vacuum generator to create high vacuum for material handling, eliminating the need for mechanical vacuum pumps and providing maintenance-free operation. When compressed air is supplied to the vacuum generator, it creates negative pressure forming a vacuum airflow that draws material into the suction nozzle, creating a material-air mixture transported through the conveying tube to the feed hopper. The integrated filter separates material from air completely, and once the feed hopper is full, the controller automatically cuts off air supply causing the vacuum generator to stop while the hopper discharge valve opens automatically to discharge material into the machine's process hopper.

The Keypack Intelligent (Kunbupack) industrial vacuum conveying equipment features automatic filter cleaning via solenoid-controlled pulse-jet valve using compressed air, ensuring continuous operation without manual intervention for filter maintenance. The vacuum conveying system is automatically activated when preset time elapses or level sensor issues a feed signal, with conveying capacity highly dependent on conveying distance and material characteristics. This auxiliary powder conveyor offers numerous advantages including simple structure, compact size, maintenance-free operation, low noise levels, convenient control, elimination of material static electricity, and full compliance with GMP standards for pharmaceutical and food-grade applications.

The high vacuum generated by the vacuum generator ensures conveyed materials are free from stratification, guaranteeing uniformity and consistency of blended material composition critical for pharmaceutical formulations and food products requiring precise ingredient ratios. The anti-clog vacuum feeder design prevents material bridging and ensures smooth powder flow, particularly valuable for cohesive powders, fine granules, and materials prone to compaction or static buildup during pneumatic transport.

Product Specifications

System Configuration

Application Areas

• Pharmaceutical Industry - Tablet Press Powder Feeding: Pneumatic vacuum conveying system for pharmaceutical powder pneumatic transport from storage containers to tablet compression machines, delivering dust-free granule transport of API powders, excipient granules, and pre-blended tablet formulations. Models QVC-1 and QVC-2 (350-700L/h) ideal for small-batch pharmaceutical production with 1.1-6.0L hopper capacity for frequent product changeovers.
• Pharmaceutical Industry - Capsule Filling Machine Material Transfer: Auxiliary powder conveyor for closed-loop powder conveying of capsule fill materials, pharmaceutical granules, and herbal medicine powders to capsule filling equipment. Anti-clog vacuum feeder design prevents material bridging during transfer of cohesive pharmaceutical powders and ensures consistent fill weight accuracy.
• Pharmaceutical Industry - Dry Granulator Powder Dosing: Material lifter for pharmaceutical powder dosing to dry granulation equipment, roller compactors, and granulation systems. GMP-compliant food-grade vacuum conveyor with automatic filter cleaning eliminates manual intervention and prevents cross-contamination between batches.
• Food Industry - Milk Powder Pneumatic Conveying to Packaging Machines: Industrial vacuum conveying equipment for infant formula powder, milk powder, and dairy powder pneumatic transport to packaging machine hoppers. High vacuum generation ensures stratification-free conveying maintaining uniformity of blended nutritional formulations critical for infant formula quality.
• Food Industry - Seasoning Powder Transport to Mixing Equipment: Dust-free granule transport system for seasoning blends, spice powders, and flavor enhancers to food mixers and blending vessels. Closed-loop system prevents powder emissions and product loss while eliminating operator exposure to allergenic seasonings.
• Food Industry - Sugar and Sweetener Powder Conveying: Pneumatic vacuum conveying system for granulated sugar, powdered sugar, artificial sweeteners, and sugar substitutes to beverage mixing tanks and confectionery production lines. Models QVC-3 and QVC-4 (1500-3000L/h) suitable for medium to high-volume food production with 12-42L hopper capacity.
• Pharmaceutical Industry - Pulverizer Material Feeding and Discharge: Auxiliary conveyor for feeding raw materials to pharmaceutical pulverizers and conveying milled powders to downstream processing equipment. Automatic activation via level sensor ensures continuous pulverizer operation without manual material handling.
• Pharmaceutical Industry - Vibrating Sieve Powder Transfer: Material lifter for conveying screened pharmaceutical powders from vibrating sieves to packaging machines, tablet presses, or storage containers. Maintenance-free operation with no mechanical vacuum pump reduces equipment downtime and service requirements.
• Food Industry - Flour and Starch Powder Conveying to Processing Equipment: Food-grade vacuum conveyor for wheat flour, corn starch, potato starch, and specialty flour pneumatic transport to dough mixers, bakery equipment, and food processing lines. Compact size and simple structure enable installation in space-constrained production facilities.
• Chemical Industry - Detergent Powder and Additive Conveying: Industrial vacuum conveying equipment for laundry detergent powder, dishwasher powder, and chemical additive powders to packaging machines and mixing equipment. Low noise levels and convenient control support integration into automated chemical production lines.

Key Features and Machine Characteristics

1. Compressed Air-Driven Vacuum Generation with No Mechanical Pump
This pneumatic vacuum conveying system operates by utilizing compressed air passing through a vacuum generator to create high vacuum for material handling, completely eliminating the need for mechanical vacuum pumps and associated maintenance requirements. The vacuum generator converts compressed air energy into vacuum pressure, drawing material into the suction nozzle and creating a material-air mixture transported through conveying tubes to the feed hopper. This maintenance-free operation eliminates vacuum pump oil changes, seal replacements, and mechanical wear issues common with traditional vacuum conveying systems, reducing total cost of ownership and minimizing production downtime for routine maintenance.

2. Automatic Filter Cleaning with Pulse-Jet Technology
The industrial vacuum conveying equipment features automatic filter cleaning via solenoid-controlled pulse-jet valve using compressed air, ensuring continuous operation without manual intervention for filter maintenance. When material accumulates on the filter surface during conveying cycles, compressed air pulses automatically clean the filter preventing pressure drop and maintaining consistent conveying capacity throughout production shifts. This anti-clog vacuum feeder design is particularly valuable for fine powders and cohesive materials that tend to blind filter media, enabling extended operation between manual cleaning intervals and supporting 24/7 production schedules in pharmaceutical and food manufacturing facilities.

3. Stratification-Free Conveying for Blended Material Uniformity
The high vacuum generated by the vacuum generator ensures conveyed materials are free from stratification, guaranteeing uniformity and consistency of blended material composition critical for pharmaceutical formulations and food products requiring precise ingredient ratios. Unlike mechanical conveyors where vibration and material flow can cause particle segregation based on size or density, this closed-loop powder conveying system maintains homogeneous mixture throughout pneumatic transport. This stratification-free conveying is essential for tablet press feeding where blend uniformity directly impacts tablet weight variation and API content uniformity, as well as for food applications requiring consistent flavor profiles and nutritional content.

4. GMP-Compliant Food-Grade Construction with Dust-Free Operation
Constructed from food-grade stainless steel with full GMP compliance, this auxiliary powder conveyor provides completely enclosed dust-free granule transport preventing product contamination, operator exposure to hazardous powders, and environmental dust emissions. The closed-loop system design eliminates powder spillage during material transfer, protecting high-value pharmaceutical ingredients and food powders from loss while maintaining clean production environments required by regulatory agencies. The dust-free operation is critical for handling allergenic food ingredients, potent pharmaceutical compounds, and toxic chemical powders where operator safety and environmental protection are paramount concerns.

5. Automatic Operation with Timer and Level Sensor Control
The material lifter features automatic activation when preset time elapses or level sensor issues a feed signal, enabling unmanned operation and seamless integration into automated production lines. The controller automatically cuts off air supply when the feed hopper is full, causing the vacuum generator to stop while the hopper discharge valve opens automatically to discharge material into the machine's process hopper. This automatic material transfer eliminates manual powder handling, reduces labor costs, prevents operator exposure to powders, and ensures consistent material supply to downstream equipment such as tablet presses, capsule fillers, and packaging machines without production interruptions.

6. Compact Size and Simple Structure for Easy Installation
The pneumatic vacuum conveying system offers compact dimensions ranging from Φ140×626mm (QVC-1) to Φ420×1208mm (QVC-4), enabling installation in space-constrained pharmaceutical laboratories, food processing facilities, and chemical production areas. The simple structure with no mechanical vacuum pump, no complex drive systems, and minimal moving parts facilitates rapid installation, reduces installation costs, and simplifies integration into existing production lines. The low noise levels and convenient control support installation near operator workstations and in multi-product facilities requiring frequent equipment reconfiguration for different powder handling applications.

Customization and Options

The vacuum conveying system can be customized with extended conveying distances beyond standard configurations to accommodate specific facility layouts and equipment positioning requirements. Hopper capacity options are available beyond the four standard models (1.1L to 42L) for applications requiring larger material storage or longer intervals between refilling cycles. Control system options include PLC integration for automated production line coordination, remote monitoring capabilities for predictive maintenance programs, and variable vacuum control for handling materials with different flowability characteristics. Material contact surfaces can be upgraded to 316L stainless steel for highly corrosive chemical powders or pharmaceutical applications requiring superior corrosion resistance. Explosion-proof configurations are available for conveying combustible powders in chemical and food processing environments requiring ATEX or IECEx compliance.

Delivery and Support

Each pneumatic vacuum conveying system includes comprehensive installation support, operational training for production and maintenance personnel, and complete technical documentation including operation manuals, maintenance schedules, pneumatic diagrams, electrical schematics, and spare parts lists. Standard delivery package covers system installation, vacuum generator commissioning, filter cleaning parameter optimization, level sensor calibration, and hands-on operator training to ensure efficient production startup. Model selection assistance helps customers choose the optimal conveying capacity (350-3000L/h), hopper capacity (1.1-42L), and air consumption (180-1440L/min) based on production requirements, material characteristics, conveying distance, and compressed air system capacity. Ongoing technical support includes remote troubleshooting assistance, readily available spare parts inventory for filters, vacuum generators, and solenoid valves, and preventive maintenance programs to ensure long-term reliability and optimal conveying performance throughout the equipment lifecycle for dust-free granule transport, closed-loop powder conveying, and pharmaceutical material transfer applications.