Products Description
Explosion-Proof Continuous Vacuum Conveyor
Product Introduction
Guanjiang's Explosion-Proof Continuous Vacuum Conveyor is a specialized automated conveying system designed for flammable, explosive, and hazardous powders and granules. Utilizing vacuum negative pressure technology, it enables enclosed, continuous, and high-efficiency material transfer with intrinsically safe circuits, static elimination, and inert gas protection — eliminating ignition sources and ensuring safe operation.
This system is widely deployed in lithium battery, chemical, pharmaceutical, and new energy industries, providing a reliable solution for handling combustible dusts such as graphene, lithium iron phosphate (LFP), pharmaceutical APIs, and titanium dioxide.
Addressing Critical Industry Pain Points
Fully enclosed conveying prevents the formation of explosive dust clouds — eliminates the risk of dust explosions and fire hazards.
Intrinsically safe circuits, anti-static design, and grounding systems remove ignition sources — safe for Zone 21/22 hazardous areas.
Continuous operation with dual-valve alternating design — achieves up to 20 T/h throughput, eliminating frequent start/stop cycles.
Closed-loop conveying prevents material exposure and cross-contamination — CIP/SIP ready for GMP/FDA compliance.
Core Technical Features
Working Principle
The system uses a Roots blower to generate stable negative pressure (-50kPa to -80kPa). The pressure difference between the atmosphere and the system draws materials through enclosed stainless steel pipelines into the filter chamber. After gas-solid separation via high-efficiency filters, materials are discharged continuously through a rotary airlock valve, while a pulse-jet cleaning system automatically cleans the filter elements. This creates a closed-loop continuous process: suction → filtration → discharge → pulse cleaning — achieving up to 20 T/h throughput with 40%+ efficiency improvement over mechanical conveyors.
Core Structure & Components
Conveyor Body
SS304/316L with double-jacket design for nitrogen inerting — corrosion-resistant, easy to clean, suitable for sanitary applications.
Pulse-Jet Valve & Controller
0.5-0.7MPa compressed air, PLC-programmable frequency (5-300s) — maintains ≥99.9% filtration efficiency.
Rotary Airlock Valve
6-blade star rotor, 0-50 r/min adjustable, ±1% discharge accuracy — air-sealed anti-jamming design.
Explosion-Proof Control System
Ex dⅡC T6 solenoid valve group, 24VDC intrinsically safe circuits (IEC 60079-11) — eliminates electrical sparks.
Level Sensor & Monitoring
RF admittance level sensor with false-alarm prevention — maintains material level between 30%-90%. IP65 bearing housing with temperature monitoring (alarm at 80°C).
Triple Explosion-Protection Design (ATEX/NEPSI Certified)
Intrinsically Safe Circuits
24VDC safety voltage — eliminates electrical spark risk. Complies with national explosion-proof standards for hazardous environments.
Anti-Static Design
Conductive materials throughout — dedicated grounding system (body ≤4Ω, flange cross-bond ≤0.03Ω). Dissipates static charge effectively.
Inert Gas & Containment
Optional nitrogen inerting with oxygen concentration monitoring. Fully enclosed design — dust emission<1mg/m³. IP65-rated rotating components.
Key Advantages
ATEX/NEPSI certified — eliminates ignition sources. Meets GB51283-2020 and international safety standards for fine chemical and hazardous area operations.
24/7 continuous operation — up to 20 T/h throughput. Energy consumption 40-60% lower than mechanical conveyors. Low maintenance cost.
Fully enclosed conveying — zero dust emission. CIP/SIP ready for pharmaceutical and food applications. Meets GMP/FDA standards.
Conveying distance up to 80m horizontally, 30m vertically. PLC control with HMI — supports both manual and automatic modes. Easy integration with existing lines.
Integrated weighing module with DCS connectivity — dosing accuracy ±0.3% to ±0.5%. Real-time data logging for quality control and compliance audits.
Typical Applications
Lithium Battery
Graphene, LFP (lithium iron phosphate), cobalt oxide, NCM cathode/anode materials — purity-preserving, explosion-proof conveying.
Chemical
Titanium dioxide, nylon pellets, resin powders, sulfur powder — corrosive, flammable, or explosive material handling.
Pharmaceutical
API (active pharmaceutical ingredients), intermediates — contamination-free transfer for GMP/FDA compliance.
Food & Additives
Flavor powders, edible pigments, nutritional additives — sanitary design for food-grade applications.
Selection & Maintenance Guide
Selection Parameters
- Material Properties: Bulk density (0.3-1.5 t/m³), particle size, flowability, flammability/corrosivity
- Capacity: Required throughput (reserve 10-20% margin)
- Layout: Conveying distance, lift height, pipeline routing
- Hazardous Area: Zone 21/22 — select appropriate Ex level (Ex dⅡC T6)
- Additional Features: Nitrogen inerting, CIP/SIP, weighing, data traceability
Maintenance Schedule
- Daily: Check pulse valve cycles (≤1200/day), operating noise (<75dB), grounding integrity
- Monthly: Vacuum leak test (≤1kPa/min), rotary valve seal inspection, pipeline cleaning, filter inspection
- Annually: Replace PTFE-coated filters (life ~3000-5000h), inspect Ex components insulation, overhaul bearings and seals
- Emergency: Stop immediately if vacuum loss, level alarm, or oxygen concentration exceeds limits
Industry Trends & Future Development
IoT and big data integration — real-time monitoring, predictive maintenance, and fault diagnosis (e.g., vibration spectrum analysis for filter blockage detection).
Specialized models for specific industries — Hastelloy models for highly corrosive materials, sterile designs for high-purity pharmaceutical applications.
Optimized vacuum system design and high-efficiency motors — further energy reduction to support carbon neutrality goals (dual-carbon target).
“The explosion-proof continuous vacuum conveyor has completely transformed our powder handling process. No more dust, no more safety concerns. The continuous operation increased our throughput by 40% while reducing labor costs. The ATEX certification gave us confidence to operate in our hazardous area.”
— Production Manager, Lithium Battery Material Manufacturer
Guanjiang's Explosion-Proof Continuous Vacuum Conveyor is the premier solution for safe, efficient, and continuous transfer of hazardous powders. With ATEX/NEPSI certification, intrinsically safe design, and up to 20 T/h capacity, it addresses the critical safety, productivity, and compliance needs of lithium battery, chemical, and pharmaceutical industries.
Need an explosion-proof vacuum conveyor for your hazardous powder handling?
Contact Our Engineers → Download Brochure