Industrial nozzles are categorized by working medium, application, and structural grade, with mainstream types being clear and easily distinguishable. Below, we categorize and organize the most commonly used operating conditions to facilitate selection and product classification:
I. By Classification of Working Medium (the most mainstream division)
Steam Jet Ejector (Steam Jet Vacuum Pump)
Process Fluid: High Pressure Saturated/Overheated Steam
Core Features: Vacuum Extraction, Vacuum Maintenance, Gas Compression
Single-stage / Multi-stage (2-5 stages), multi-stage achieves high vacuum to ultra-high vacuum
Applicable: Chemical Distillation/Evaporation, Pharmaceutical Freeze Drying, Metallurgical De-gassing, Power De-oxygenation
2. Water Jet Ejector (Water Jet Vacuum Pump)
Work Fluids: High-Pressure Clean Water / Recirculating Water
Core Features: Low-Medium Vacuum Extraction, Gas-Liquid Mixing Absorption, Exhaust Gas Washing
Features: Simple structure, low cost, often paired with water circulation units.
Applicable: Laboratory Vacuum, Small-Scale Chemical Industry, Exhaust Gas Absorption, Wastewater Treatment Aeration
3. Liquid-Liquid Injector
Working Fluid: High-pressure liquid, draws in another liquid stream
Core Functions: Liquid Conveyance, Proportioning Mixing, Dilution, Recirculation and Pressure Boost
Applicable to: chemical additives, oil field water injection, dosing of water treatment chemicals, and booster for recirculation pipelines
4. Gas-Gas / Gas-Liquid Jet Nozzles
Work Fluids: High-pressure Air, Nitrogen, Process Gas
Core Features: Gas Pressurization, Exhaust Gas Recovery, Gas-Liquid Mixing, Agitation
Applicable to: Flue Gas Recirculation, Fuel Cell Gas Supply, Desulfurization and Denitrification, Ozone Aeration
Part Two: Categorized by Structure and Vacuum Grade
1. Single-stage jet ejector
Vacuum Degree: several to several tens of kPa
Features: Simplified structure, low cost, minimal land use
Applicable to low vacuum and rough vacuum environments.
2. Multi-stage喷射器 (with/without condenser)
Vacuum Level: 1 kPa to 1 Pa range
Features: Multi-level series connection, equipped with a condenser to reduce steam consumption.
Applicable to high vacuum processes in precision chemicals, pharmaceuticals, electronics, and other fields.
III. Categorized by Special Use
Venturi Injector (Venturi Tube Injector)
Drawing on the Venturi effect, focusing on mass transfer, cleaning, and reaction
Applicable: Desulfurization and Denitrification, Acid Washing Exhaust Gas Purification, Gas-Liquid Reactor
2. Desulfurization and Denitrification Injector
Specialized flue gas purification, limestone slurry
Highlighting abrasion resistance, clog prevention, and high flow compatibility
Cooling Jet Injector
For jet refrigeration systems, achieving refrigerant compression/induction
Adaptable waste heat-driven refrigeration and CO₂ transcritical refrigeration systems
4. Corrosion/Special Material Spray Guns
Fluorine-lined, 316L stainless steel, titanium, Hastelloy, graphite, etc.
Suitable for strong acids, alkalis, highly corrosive substances, and flammable and explosive media