Industrial Vacuum Conveyor System Solutions for Powder & Bulk Materials
Vacuum conveyor systems automatically transfer various materials into the hoppers of packaging machines, injection molding machines, and crushers. They can also feed mixed materials directly into mixers (such as V-type, 2D, and 3D mixers), significantly reducing manual labor and eliminating dust spillage during feeding.
As the ideal equipment for pharmaceutical and food factories, it is essential for achieving “GMP” certification and promoting clean, standardized production.
What is a Vacuum Conveying System?
A vacuum conveyor system is a type of pneumatic equipment that utilizes the pressure differential between a vacuum pump and the atmosphere. This differential generates a high-velocity airflow within a sealed pipeline, using negative pressure suction to achieve dust-free transport of powders and granules.
The vacuum pneumatic conveying system effectively eliminates workshop dust contamination and elevates cleanliness. By significantly reducing manual labor and boosting production capacity, it ensures a safe, reliable, and eco-friendly manufacturing process.
Working Principle
1. Compressed air drives a multi-stage vacuum generator to create negative pressure. The system has no moving parts, requires no lubrication, and produces no heat. A motor-driven vacuum pump is optional.
2. When the bottom discharge valve is closed, a vacuum is generated within the powder hopper and the material conveying pipeline.
3. Under vacuum, material is drawn from the suction point through the pipeline into the powder hopper.
4. A high-efficiency filter blocks fine powders and granules, preventing them from entering the vacuum pump or escaping into the air.
5. Concurrently with the material conveying process, compressed air is accumulated within a blowback air tank.
6. Once the suction time reaches the preset value, the vacuum stops and the discharge valve opens. Material is released, while stored compressed air creates a pulse to clean the filter.
7. After discharge, the valve closes and the vacuum resumes. The system repeats this cycle automatically, controlled by a PLC for stable operation. Built with 304 or 316L stainless steel, the system meets GMP standards. Mirror-polished surfaces (Ra ≤ 0.8 μm) ensure easy cleaning. It features low energy consumption, low noise, and a clamp design for quick maintenance.
Parts
The vacuum conveying system primarily consists of a Pulse Jet Cleaning System， a Filter Unit, a Material Inlet, a Suction Pipe, an Electric Vacuum Pump, and an Air Filter.
Blower
Bag filter cartridge
Electrical control box
Backflush
PE filter element
filter element
Electric Vacuum Feeder Model
Standard models available. Custom solutions supported.
ZKS-1
ZKS-3
ZKS-7
ZKS-10-6
ZKS-20-5
ZKS-456
Features of the Vacuum Conveying System
- They operate in a sealed environment, reducing dust contamination and improving workplace cleanliness; sealed piping prevents cross-contamination between different powders, making them particularly suitable for industries with high cleanliness requirements, such as pharmaceuticals and food processing.
- Equipped with a PLC control system, it enables automated operation, reduces manual intervention, and lowers labor costs.
- It can be integrated with other equipment to achieve continuous production and improve production efficiency; it adapts to conveying needs across varying distances and vertical heights, making it suitable for complex workshop layouts.
- It features explosion-proof capabilities, making it suitable for flammable and explosive powders (such as lithium-ion battery materials), thereby reducing the risk of explosions. It effectively eliminates static electricity in materials, ensuring production safety.
- Prevents material oxidation: The sealed conveying system prevents powder from coming into contact with air, reducing the risk of oxidation or deterioration. It also minimizes manual handling, thereby lowering operational risks.
- Easy maintenance: Facilitates troubleshooting and repairs, reducing downtime. Pipes and hoppers can be quickly disassembled for cleaning and replacement, complying with standards such as GMP.
Technical Specifications
The following are the standard specifications; customization is available for special requirements.
| Model | Motor Power (kW) | Conveying Capacity* (kg/h) | Air Supply Pressure | Suction Pipe Diameter (mm) | Overall Size A×B (mm) |
| ZKS-1 | 1.5 | 100–300 | 0.6 MPa | Φ38 | Φ220 × 820 |
| ZKS-2 | 2.2 | 200–500 | 0.6 MPa | Φ38 | Φ220 × 820 |
| ZKS-3 | 3.0 | 300–800 | 0.6 MPa | Φ51 | Φ290 × 950 |
| ZKS-4 | 5.5 | 800–1200 | 0.6 MPa | Φ51 | Φ420 × 1250 |
| ZKS-5 | 4.0 | 1000–1500 | 0.6 MPa | Φ51 | Φ420 × 1350 |
| ZKS-6 | 5.5 | 1500–2000 | 0.6 MPa | Φ63 | Φ420 × 1450 |
| ZKS-7 | 7.5 | 2000–3000 | 0.6 MPa | Φ76 | Φ420 × 1650 |
| ZKS-10-6 | 7.5 | 2000–4000 | 0.6 MPa | Φ76 | Φ600 × 1500 |
| ZKS-20-5 | 11 | 3000–5000 | 0.6 MPa | Φ76 | Φ800 × 1900 |
Applications
Vacuum conveying systems are widely used for the safe, enclosed, and dust-free transfer of powders, granules, and bulk materials. They help improve hygiene, reduce material loss, and support automated production across various industries.
Food Industry
flour, sugar(sugar sifter shaker), milk powder, starch, spices
Pharmaceutical Industry
API (active pharmaceutical ingredients), capsules, tablets, excipients
Chemical Industry
resins,salt(industrial salt sifter),pigments, additives, plastic powders,detergent(detergent powder screening machine)
New Energy Industry
lithium powder, graphite, cathode/anode materials
Food Industry 
Pharmaceutical Industry 
Chemical Industry 
New Energy Industry
Customer site
See how our vacuum conveyors perform in real production scenarios.It can be integrated with industrial sieve machines, thereby creating a modern workshop that seamlessly blends screening and conveying operations.
Vibrating Screen and Conveyor Machine Manufacturer & Supplier
Built for precision screening, reliable performance, and flexible industrial applications,
Yuanjing rotary vibrating screens are trusted by customers worldwide.
Global Project Experience
Yuanjing products are exported to 50+ countries and regions, serving industries including food, chemicals, pharmaceuticals, mining, and new energy.
Strong Manufacturing Capability
Advanced production lines with laser cutting, CNC machining, automatic welding, and strict quality inspection ensure consistent product quality.
Accurate & Stable Separation
Optimized vibration design delivers even material flow, high screening accuracy, and stable long-term operation.
Customized Screening Solutions
Yuanjing offers flexible configurations in diameter, mesh size, deck layers, and material options to fit your exact process requirements.
FAQs
Get Custom Solution
We can provide customised screening and conveying equipment solutions tailored to different materials and production requirements.
Send us your requirements, and our team will provide the right solution and a fast quotation within 24 hours.
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