TYPES OF BLOWERS
• FAN
-Hight capacity of air
-Low pressure
-Max. ∆p=100mbar
• SIDE CHANEL
-Hight capacity of air
-Low pressure
-Max. ∆p=300mbar
TYPES OF BLOWERS
•BLOWER ROOTS
•Hight capacity of air
•Medium pressure
•Max.∆p=1000mbar
PEDRO GIL manufactures roots type positive displacement
blowers for several industrial applications such as pneumatic
conveying of bulk materials (food, cement, chemical material
etc.), waste water treatment, vacuum applcations, gas moving
processes and fish farming. Roots type blowers can provide
high volumes of air up to 1000 mBar of pressure and 500 mBar
of vacuum depending on operating conditions.
•COMPRESSOR
•Medium capacity of air
•Hight pressure
•Max.∆p= >10bar
3D SECTIONAL
DRAWING
-HIGH CAPACITY
-MEDIUM PRESSURE
SECTIONAL
DRAWING
ROTOR
BEARINGS
OIL
GEARS
BEARINGS
OIL
ROTOR
PARTS OF MACHINE
MAINTENANCE CHECK LITS
AND TIME
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Clean the filter cartridge if the pressure falls bellow 50 mbar
Change de oil in the housings every 4000 hours
Check the state of the belts every 500 hours
Review the blower bearings and seals after 20.000 hours
Oil level control every 1000 hours
Perform maintenance of the electrical motor as indicated in the
manufacturer’s specifications
General inspection after 8000 hours or at least once a year.
1- BASE SILENCER
2- BLOWER
3- INLET SILENCER
4- FILTER CERTRIDGE
5- SAFETY VALVE
6- CHECK VALVE
7- FLANGE PIPE
8- RUBER SLEEVE
9- CLAMPS
10- ELASTIC FEET
11- ENCLOSURE
12- ELECTRIC MOTOR
13- PULLEY
14- ELECTRIC FAN
15- MANOMETER
16- VACUOMETER
17- OIL FILTER
18- OIL LEVEL
19- ELECTRONIC PANEL (OPTIONAL)
20- THERMOMETER (OPTIONAL)
FAILURE OF BLOWER FOR OVER
TEMPERATURE
OVER TEMPERATURE
Dilatation
AREA OF
CONTACT
FAILURE OF BLOWER FOR OVER
PRESSURE
OVER PRESSURE
Flexion
AREA OF
CONTACT
0.25mm
∆p > 1000mbar
MAIN APLICATIONS OF BLOWERS
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WASTE WATER TREATMENT
PNEUMATIC HANDLING CONVEYING AND DOSING SYSTEMS
FLUIDIFICATION
LOW PRESSURE AIR CONVEYS MATERIAL
AERATION WITH LOW PRESSURE AIR
PRESSURE MATERIAL CONVEYING
LOW PRESSURE AIR EXPEDITES BULK CONVEYING
LOW PRESSURE AND VACUUM CONVEYING
LOW PRESSURE AIR SUPPORT COMBUSTION
CENTRALY LOCATED VACUUM SYSTEM MAKES CLEANING EASY
VACUUM PACKAGING
MIXING SEDIMENT
PUNCH COLLECTOR
SEWING MACHINE
VACUUM TRANSFER
LOW PRESSURE AIR AGITATES CHEMICAL SOLUTIONS
VACUUM CONVEYS BULK
GROUP WITHOUT CONECTION TO THE
INSTALLATION
1.-Some fences filter the solids of
biggest size
2-3.-the water will pass for two types
of machines, the "grit tanks", which
will eliminate the sands and heavy
solids, and the "degreasers", that will
erase any type of greasy, and floating
existing in the water
WATER
HEIGHT
5M
4.-The water passes to some deposits
where the particles in suspension
settle deep down.
5.-The biological treatment has it as
goal to eliminate the fertility pollution
of the waste waters.
This process is developed in tanks
aired where a mud activated with
microorganisms that assimilate the
biodegradable organic matter is
formed
6.-The secondary settling consists of a
secondary settling whose mission is
to separate the mud activated of the
water.
Without Pressure.
Pipe not conect.
0 mbar
GROUP WIT CONECTION TO THE
INSTALLATION
P1=P Atm.
WATER
HEIGHT
5M
P2
600 mbar
With Pressure. Pipe
conect to the
installation.
P2 = 500 mbar + kv²
Static
pressure
Dynamic
pressure
Aprox.100mbar
AERATION WITH LOW PRESSURE AIR
Infonation of the customer: FLOW and PRESSURE
h=∆p
h
-Flow depend of the volum of
watwer.
-Pressure is ± hight of the tank.
Biological treatment
O2
AIR
expensive
20% O2
Low pressure air is used in sewage treatment aeration
tanks.The air is used to support the bacteria
which in turn break down the organic matter
DIFERENTS APLICATIONS TO
PNEUMATIC HANDLING
CONVEYING AND DOSING
SYSTEMS
INDUSTRIES SERVED /
BULK MATERIALS CONVEYED
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Agriculture:
Wheat, flour, semolina, barley, oat, rye, bran, chaff, feed, seed, corn, chickpea, bean,
lentil, pea, soy bean, sesame, rice, pice flour, dried fruit, hazelnut, peanut, almond,
sunflower seed, cotton seed, grain cereals, chestnut are some of the bulk materials
that can be conveyed with pneumatic transportation systems.
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Food Industry:
Grains and powders like coffee grain, coffe powder, sugar, salt and spice can be
conveyed. Stainless steel equipment (rotary valves, piping, silo) is used in food
conveying.
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Other Industrial Materials:
Cement, mining minerals, petrochemical materials, pharmaceuticals, medical
powders, calcite, pvc, ash, glass powder, marble powder, plastic pellets, sawdust are
some of the bulk solids that can be conveyed
MATERIALS FOR PNEUMATIC
TRANSPORT
The most common materials for the pneumatic transport are
any material powdered or granulated as:
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Sugar
Coffee
Coal
Calcium carbonate
Cement
Flour
PVC
Wheat
In conveying of material we have 2 phases:
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Dense phase
The dense phase it is used in sectors as the cement or detergents. This technology uses
compressed air to pressures that vary bar from 2 to 5 and is suitable for every type of materials
and ideal for abrasive products, where the low speed of transport prevents wears in pipings,
elbows and other elements.
Its Their main characteristics are the reached distances, up to 2.000 m, and the productions up to
500 t/hr. Besides, the piping is of smaller diameter in relation to the diluted phase, guarantee that
losses of air or product during the transport are not produced, are of low air consumption and of
low operative costs.
Likewise, the densificación of the product in the piping and the low speed of transport (among 2 to
12 m/sec) allows a soft treatment of the product, preventing the breaking of the particles
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Diluted phase
The systems of pneumatic conveyors of phase diluted move material to granel suspended in a
draught that is introduced by a blower of positive pressure before the points of entry of materials,
or by a vacuum pump that eliminates the air of the system after the points of offloading of
materials.
The material is separated airborne from transport in the point of use, and it unloads afterwards in
sets by throttle flap valves either of paper cutter, or in a continuous way by rotable flap valves of
inner tube.
PRESSURE MATERIAL CONVEYING
Infonation of the customer: FLOW and PRESSURE
ATMOSPHERE
Low presure air carries the
material from the hopper into
the bin.
•Pressure depend of the Ø of pipe, Qa of
material to conveying and leng of pipe
•Flow depend of the speed that the product
need to be conveyed
LOW PRESSURE AIR EXPEDITES
BULK CONVEYING
Infonation of the customer: FLOW and PRESSURE
Qa
A blower can expedite gravity in
bulk material conveying
systems.
P2
LOW PRESSURE AND VACUUM
CONVEYING VACUUM
A vacuum pump pulls the
material from the hopper
into the bin.
MIXER FILLING, MIXER UNLOADING,
MIX PREPARING, DOSING
Inner tube clean
Door of access
Air drain clean
Venturi tube
Injector tube
Deposit of
compressed air
Filter bag
Air inlet
dirty
Dosing different granular
or powdered materials
from silos and filling a
mixer or blender
Inner tube dirty
Offloading of
dust
MIXER FILLING, MIXER UNLOADING,
MIX PREPARING, DOSING
Unloading a mixer and
loading a bag
SILO LOADING
Conveying From a Machine to
Silo with pneumatic conveying
system
Silo filling from ground by
grain vac system
WEIGHING
Vacuuming bulk solids from ground,
weighing and bag filling
LOW PRESSURE AIR
CONVEYS MATERIAL
A blower supplying low
pressure air conveys
insulating material to the job
site.
TRUCK LOADING, TRUCK UNLOADING
Truck unloading by mobile pneumatic
conveyor
TRUCK LOADING, TRUCK UNLOADING
Silo discharging and truck loading of grain
with pneumatic conveying
FLUIDIFICATION
The basic beginning of the process of fluidification
consists in using pressure of air to hold in movement
the material that it|he finds in the interior of the silo so
that it does not pile up in the inferior part.
LOW PRESSURE AIR SUPPORT
COMBUSTION
A gas pump and blower are used in combination
air mixes proportionately with the gas to provide a
combustible mixture to the burner.
CENTRALY LOCATED VACUUM
SYSTEM MAKES CLEANING EASY
The easily accessible
sockets of vacuum do the
cleaning of the buildings
easy and effective .
Central vacuum system
ideal for cement plants,
plants where aspiration
is carried out for
vacuum.
MIXING SEDIMENT
Agitating material by air
provides for more complete
mixing.