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Description: with either mechanical boosting or air ejection alone. Flow ranges extend to approximately 2000 CFM (3400 m³/h) with vacuum levels of 0.1 Torr (0.13 mbar). Principle of Operation: In this system, an air ejector is inserted between the mechanical lobe-type booster and the liquid ring pump
- Configuration: Combination / Multi-Technology Pump
- Mechanical Pump Type: Liquid Ring, Lobed Rotor
- Applications: General Purpose / Industrial
- Applications: General Purpose / Industrial
Standards and Technical Documents - Vapour vacuum pumps -- Measurement of performance characteristics -- Part 2: Measurement of critical backing pressure -- ISO 1608-2:1989
Description: The considered method of measurement deals with vapours jet vacuum pumps, diffusions pumps and diffusion-ejector pumps. The dependence of the performance of these pumps on the backing pressure can only be completely described be means of a curve relating the inlet and backing pressure over
Supplier: Numatics, Inc.
Description: The Numatics vacuum ejectors consist of basic, in-line, feed, multi-stage and compact units. Basic ejectors offer customers a reliable and cost effective solution for handling air-tight work pieces. The compact type intelligent ejectors include integrated valve technology, system monitoring, along
- Venturi Jet Type / Media: Venturi Air Jet
- Application: General Purpose / Industrial, Manufacturing Processing, Other
- Mounting: Other
- Configuration: Individual Vacuum Pump
Supplier: BEX Spray Nozzles
Description: EDUCTOR PRINCIPLES: BEX eductors use a unique venturi design which enables smaller pumps to circulate large volumes of tank solution. The eductor will circulate four to five gallons of solution for each gallon pumped. BEX eductors are used for mixing chemicals, suspending solids, adjusting pH
Supplier: APV, An SPX Brand
Description: Titanium plate heat exchangers for evaporator and condenser, vessel, seawater ejector, freshwater pump, freshwater meter, frame, control panel with motor starters and salinometer, and dosing unit for anti-scaling. ~ The water desalination unit is a single stage, plate type evaporator and condenser
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Featured Products for Ejector Pump Principle Top
BEX Spray Nozzles
EDUCTOR PRINCIPLES: BEX eductors use a unique venturi design which enables smaller pumps to circulate large volumes of tank solution. The eductor will circulate four to five gallons of solution for each gallon pumped. BEX eductors are used for mixing chemicals, suspending solids, adjusting pH, "sweeping" debris or sludge toward a filter intake and many other useful applications. TYPICAL APPLICATIONS: - Plating tanks. - Cleaning tanks. - Phosphating tanks. - E-coat tanks. - Fertilizer tanks... (read more)
Browse Ejectors and Eductors Datasheets for BEX Spray Nozzles
Schutte & Koerting
Schutte & Koerting Water Jet Eductor...
Principle of Operation. Water Jet Eductors are designed for liquid pumping and mixing operations and for the handling of some solids. In operation, pressure liquid enters the eductor through the pressure nozzle and produces a high velocity jet. This jet action creates a vacuum in the line which causes the suction liquid to flow up into the body of the eductor where it is entrained by the pressure liquid. Both liquids are thoroughly mixed in the throat of the eductor and are discharged against... (read more)
Browse Ejectors and Eductors Datasheets for Schutte & Koerting
ESDU Process Engineering Technology
Plates, Blocks, Spheres. Section 1: Simply shaped bodies in air and other fluids. Pump and Fan Selection and Design. Section 1: Rotodynamic pumps. Section 2: Ejectors (jet pumps). Section 3: Fans. Insulation and Temperature Measurement. Section 1: Refractory lining materials. Section 2: Temperature measurement. Learn More About ESDU's Process Engineering Technology Design Methods, Data and Software Tools!... (read more)
Browse Thermal Analysis Software Datasheets for IHS ESDU
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Steam Ejector Pumps And Ejectors & Steam Ejector Theory
by a properly designed throat or venturi will economically make use of high pressure fluid to compress from a low pressure region to a higher pressure. This change from pressure head to velocity head is the basis of the jet vacuum principle. Ejectors are generally categorized into one of four basic types
More Information on: Ejector Pump Principle Top
Journal of Aircraft > Active Flow Control of a Boundary Layer-Ingesting Serpentine Inlet Diffuser
Fig. 3 The ejector - pump principle .
ESDU 85032 A - Ejectors and jet pumps. Design and performance for incompressible liquid flow.
THE BASIC LIQUID EJECTOR OR JET PUMP Principle of Operation An ejector or jet pump is a device in which the kinetic energy of one fluid stream (the primary or driving fluid) is used to drive another fluid stream (the secondary or...
The vapor-jet principle of the ejector pumps has been modified by using oil or mercury vapor diffusing through a jet, then condensing the vapor on the cooled wall of the pump chamber.
Possibilities of improving ejector pump characteristics
Figure 1 shows the principle profile of the ejector pump flow section and four characteristic cross sections (1–1, 2–2, 3–3, and 4–4), the numbers of which appear in the indices of the parameters that characterize the pump operation.
Modeling of Synthetic Jet Ejectors for Electronics Cooling
The principle of jet ejectors or pumps ([Gosline et al. ) has been known for several decades.
Thermal management using synthetic jet ejectors
The principle of jet ejectors or pumps ,  has been known for several decades.
Progress in vacuum technology
Ejector type vapour pumps have been in use for a long period but the use of ejector principles at lower pressures is mentioned as a more recent development.
Diffusion pumps: a critical discussion of existing theories
The method by which the gas is brought into the mercury- vapour blast in the condensation pump is based on a new principle which is essentially different from that employed in the steam ejector or Gaede diffusion pump.
Vacuum Pumps and Vacuum Generators
This video provides an animation of the operating principle of a jet ejector vacuum pump .
principle , to drive an ejector pump .
Expedited Award for Novel Research: Feasibility Study of a Heat-Pipe Refrigerator
The refrigerator operates on the vapor-compression principle using a vapor-jet ejector for compression and capillary wicking for liquid inventory control and pumping .
Characteristics of Diffusion Pumps
...possibility that at low values of heat input the diffusion principle is important and that as the heat input is increased a gradual tran- sition occurs until at high values of heat input the ejector principle determines the action of the pump .
Operation and technique of commercial aircrafts
The fuel pumps operate typically according to the ejector - principle with different conveying pressures that ensure an automatic switching under tanks.
Figure 2 GM's FDS concept from the late 1950s  BASIC PRINCIPLES OF FD PUMPS The FD pumps, also known as jet pumps, jet compressors, or ejectors are widely used in chemical and process industries for pumping gases .
Ejector or venturi pumps which use gas instead of water, are very similar and exploit the entrainment and venturi principles in a straightforward way.