SOLID CONVEYING EDUCTORS
E1400 SERIES
Solid conveying involves the
transport of particulate
materials mostly by air or other
gases.
Venturi eductors utilize the air
output of a blower to generate
vacuum that can be used to
entrain and feed powders,
pellets and bulk solids into a
Pneumatic Conveying stream to
deliver the solids at the
destination Silos/Bins at a
different location and at
different elevation.
Solid Conveying Eductors are
used in dilute phase, positive
conveying systems.
Solid Conveying System is generally a more practical and economical way of transport when
compared to alternative mechanical conveying systems such as belt conveyors, screw conveyors
because of the following reasons:
o Relatively economical to install and operate.
o These are clean, environmentally acceptable and simple to maintain.
o Flexible in terms of rerouting and expansion.
Solid Conveying Eductors can be successfully employed in conveying various powders, bulk solids,
pellets.
Solid Conveying Eductors can be used to transport all types of dry materials. The Material of
Construction has to be chosen depending upon the nature, size (limiting factor) and its ability to
erode and corrode the walls of the ejector.
Solid Conveying Eductors are used as an alternative to Rotary airlocks, Screw Conveyors, Bucket
elevators, Flexible conveyors as they do not require any maintenance.
PRINCIPLE OF OPERATION
Solid conveying works on the principle of Pneumatic conveying
Solid conveying eductors are converging-diverging venturies which are used primarily in
transportation of bulk solids. Air at the required pressure is sent in as a motive fluid.
The suction is connected to the hopper which contains the materials to be conveyed. Air passes
through the motive nozzle, creates vacuum and sucks the materials from the suction side and
delivers to the customer defined destination.
Depending upon the nature and bulk density of the materials to be conveyed and the available
pressure, the size and the conveying capacity of the Eductors differ.
APPLICATION
These Eductors are installed beneath several solid processing equipments because they create
vacuum at the product inlet which results in dust free material conveying system. They are
commonly installed in the following solid processing equipments:
1. Bins & Hoppers,
2. Mixers, Grinders & Mills,
3. Bag House & Dust Collectors,
4. Classifiers/Screener Outlets,
Solid Conveying Eductors can convey a variety of solids ranging from nuts, salts, oats to alumina,
cement, zeolite, Iron Oxide etc.
BAG DUMP STATIONS
Solids handling eductors are ideal for conveying product from bag dump stations. Food additives (sanitary
dump stations) and fine powders (talc, resins) are examples of bag dump applications that benefit from
eductor technology. Placed below the hopper in a bag dump station, eductors eliminate blowback due to
leakage and control dust clouds by creating vacuum and drawing the product in.
ABRASIVE MATERIAL HANDLING
Solids handling eductors convey abrasive materials (including Coke fines, sand, metal powders, etc) with
no moving parts. The result is less downtime from close tolerance wear problems associated with rotary
valve designs. A variety of options can be used to increase the strength and wear resistance of eductors
to meet the exact specifications of almost any application. Cast iron solid handling eductors can be
hardened to 55 Rockwell °C throughout, carbon steel eductors can be surface hardened , and eductors
with ceramic wear parts are available as well.
IMPROVE PERFORMANCE OF EXISTING ROTARY VALVE INSTALLATIONS
In existing installations that employ rotary valves, solid handling eductors have been proven to improve
performance and efficiency. They deliver considerable economic benefit by venting and recovering
blowback air and product using existing shop air at 50-80 PSI. Solids handling eductors can recycle
solids back to the feed bin or boost vent air directly into the conveyor line. They are commonly
employed in both single and double airlock installations to extend air lock life.
SENSITIVE MATERIAL HANDLING
The absence of moving parts creates the opportunity to convey sensitive materials with less damage.
Plastic pellets suffer less chipping, activated carbon experiences less degradation and pet foods are
transported with less product loss.
HIGH TEMPERATURE AND VARYING SIZE SOLIDS
Solids handling eductors effectively replace troublesome mechanical feed equipment to handle materials
exhibiting a wide range of shapes and sizes as well as applications that employ high temperatures.
Unlike mechanical devices, solids handling eductors have no moving parts and are not sensitive to the
high temperatures associated with many of these applications.
ADVANTAGES
1. No moving parts 5. Minimal particle degradation
2. No blow back 6. No maintenance is required
3. No mechanical shearing 7. It is economical and easy to install
4. 24x7 Reliability 8. No safety hazard
INDUSTRIES UTILISING SOLID CONVEYING EDUCTORS
Solid conveying eductors find application in all those fields where there is a need for transportation of
powders or pelletized products. Following are a list of few industries in which these Eductors are used.
1. Plastics 4. Food & Diary
2. Power 5. Foundaries
3. Chemicals 6. Mining
MATERIAL OF CONSTRUCTION
We offer the following materials as standard:
1.Carbon Steel
2.Stainless Steel Grades
Other materials can be provided as per the Customer's requirement
END CONNECTIONS
Flanged to ANSI B16.5 150# as a standard. We can also provide other standard and end connection as
per the requirement of the Customer.
TYPICAL INSTALLATION
