The Pneumatic Conveying Ejector is a maintenance-free ejector with no moving parts. It is designed for pneumatic conveying of powders, granules and bulk materials, and can replace conventional rotary valves to achieve continuous, non-clogging material feeding and conveying.
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Pneumatic Conveying InjectorOrder(MOQ) :
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Hefei,ChinaColor :
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Based on actualProduct Overview
The pneumatic conveying ejector works on Venturi principle for positive dilute-phase conveying. No moving parts, no wear/jam/air leakage like rotary valves. For closed conveying of cement, fly ash, limestone powder, coal powder, alumina powder and more. Applied in building materials, power, chemical, metallurgy and grain sectors.
Working Principle
1. Feeding: Material flows into the ejector chamber via manual screw gate, top hopper and pneumatic butterfly valve.
2. Jet Induction: High-speed compressed air from the nozzle forms negative pressure between nozzle and Venturi tube, entraining material into the mixing zone.
3. Mixing & Conveying: Air-material mixture decelerates and pressurizes in the diffuser. Kinetic energy converts to static pressure for pipeline delivery to the end point.
4. Adjustment: Relative positioning of air duct and nozzle tunes ejection efficiency and throughput for different operating conditions.
PJP type positive pressure dilute phase pneumatic conveying jet pump
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Specification model |
PJP-1 |
PJP-2 |
PJP-3 |
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Feed pipe diameter (inches) |
3～6 |
7～10 |
12～16 |
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Delivery volume (t/h) |
1～9 |
10～40 |
41～80 |
Product Advantages
No Moving Parts, Maintenance-free Design
Without rotary valves, bearings or sealing parts in the main flow path, the ejector avoids component wear. It cuts frequent maintenance and replacement costs caused by abrasive powders, and is ideal for fine, abrasive and high-temperature materials.
Fully Sealed Conveying, Zero Dust Leakage
Built with a fully enclosed structure. When connected to a dust collection system, it creates a dust-free working environment and eliminates material backflow, dust emission and leakage common to rotary valves.
Compact Structure, Lower System Cost
Integrated design with standard flange connections for easy installation. Compared with traditional tank pump or rotary valve systems, it greatly reduces capital investment and operating energy consumption.
Reliable Operation & Wide Adaptability
Combining pneumatic pressure differential principle and fluidization technology, it delivers stable continuous conveying. It supports positive-pressure dilute-phase transport with conveying distance of 3–400 m, lifting height of 5–45 m and working pressure of 40–100 kPa.
Flexible Material & Customization Options
Available in carbon steel (Q235B) and 304 / 316L stainless steel. The nozzle, diffuser and inlet dimensions can be customized according to material properties.
Case
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★ Project Scope: Design, manufacturing, and supply of one set of PJP-3 jet pump fly ash pneumatic conveying system ★ Conveying Capacity: 45 t/h ★ Horizontal Conveying Distance: 110 m ★ Vertical Height: 20 m |
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Typical Applications
Our pneumatic conveying ejector provides reliable, fully sealed powder conveying across multiple industries.
Power
Handles fly ash, limestone powder, hydrated lime and activated carbon for dust collection, furnace calcium injection and FGD processes.
Building Materials
Works with cement, raw meal, slag and steel slag powder for silo discharge and intermediate material storage.
Chemical
Suitable for alumina, phosphorus, silicone powder and calcium carbonate, offering steady powder transfer and accurate reactor feeding.
Metallurgy
Conveys coal, quartz and pyrophyllite powder for blast furnace coal injection and foundry sand transport.
Food
Fully sealed hygienic conveying of flour, starch, milk powder and sugar powder for food-grade manufacturing.
Why Choose Us?
- Manufacturing Qualifications – PJP jet pumps are produced under strict quality control, with ISO certification and patent certificates.
- Customized Engineering – Tailored solutions based on your material properties (particle size, density, moisture content, abrasiveness). Options available in carbon steel, stainless steel, or cast iron.
- Complete System Supply – We supply not only jet pumps but also entire systems: Roots blowers, rotary airlock valves, piping, filter receivers/cyclone separators, and PLC control panels.
- Proven Track Record – Hundreds of PJP systems successfully operating in cement plants, power stations, and chemical facilities worldwide.
- Technical Support – On-site commissioning, operator training, and lifelong technical support.
- Fast Delivery – 60–120 days lead time, with standard sea-worthy packaging.
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