|Product Information of JAPAN EJECTOR ENGINEERING CO., LTD.|
|Classification of Ejectors|
|General Information of Ejectors|
ejectors requires extensive skill and experience, but in fact that it is quite
1) Jet Nozzle (a covering nozzle for actuating liquid, an expanding nozzle for actuating gas)
2) Diffuser (also called a tail or throat)
Jet device, referred to as "ejector", which includes all types of jet pumps have no rapidly rotating parts, utilize fluids in motion under controlled conditions, and discharge at a pressure intermediate to motive and suction pressures into energy of motion. The ejector's operation and transformation of energy of pressure into the motion is described as follows:
Power is provided by high-pressure stream of fluid directed through a nozzle
that is designed to
the highest velocity possible. By mixing the motive fluid, jetting from the
nozzle with the suction fluid
in the suction chamber
produce a mixture of stream traveling to the diffuser at
a lower velocity.
the mixtures reach at the diffuser, they gradually reduce the speed and recover
the energy of pressure
discharge with very little loss.
|There is no definite ejector theory at present. Ejectors designs are based on the theory of nozzle and diffuser areas and on a combination of theory and empirically determined coefficient for lengths and shape.|
|The most efficient ejectors are obtained through experimentation of prototype and further examined estimated design.|
In order to manufacture the efficient jet units, it requires having
proper manufacturing facilities
as well as
are manufactured with any machinable materials. Units can be made from cast
steels, carbon steels, titanium, carbon, polyester-fiberglass, polyvinyl
chloride, and more, depending
on the application.
Also units can be equipped with lining work with lead,
rubber, phenol resins and
|One of the distinctive advantages of ejectors compared with the like of pumps is that they are quite simple in construction, have no rotating parts to wear or break. There is no need for adjustment, easy to maintain and abrasion resistant materials would be used for possible corrosion, erosion.|
|Ejectors require relatively little space and little attention, and can be installed in remote, hazardous and inaccessible places. Periodic inspection is also easy that they can be quickly fixed or replaced with no lubrication requirements.|
Compared to the work required for designing and manufacturing
ejectors, the size of
ordinary units is small
the cost accordingly.
|Today ejectors have been used throughout the industry, and new uses are constantly developed. Based on our full experiences, excellent test facilities and engineers, we will cooperate with you designing to meet the requirement of your special needs and applications.|
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