Two Stage High Pressure Roots Blower

Two Stage High Pressure Roots Blower

We make all sorts of roots blower, centrifugal blower, Our Primary products are as below:

Kind Diameter Price of circulation Strain
ESR-MJ(Intense Kind) Φ50~Φ300mm .5~140m³/min 9.8KPa~98.8Kpa
ESR(Normal Variety) Φ50~Φ350mm .5~140m³/min nine.8KPa~78.4Kpa
ESR-H(Higher-pressure Variety) Φ50~Φ350mm .7~160m³/min fifty eight.8KPa~ninety eight.8Kpa
ESR-V(Vacuum Pump) Φ50~Φ350mm .five~160m³/min nine.8KPa~fifty three.3Kpa
EL Sequence Φ200~Φ600mm twenty.3~750m³/min 9.8KPa~58.8Kpa
Multistage Centrifugal Blower
or C-Sequence
Φ250~Φ500mm 50~500m³/min 9.8KPa~98Kpa
ERR-ERG Kind Φ250~Φ500mm 120~420m³/min nine.8KPa~98.8Kpa

The operating principle of the three-blade roots blower: two three-lobed rotors are organized in the cavity, and the
suction port and the discharge port are opened on equally sides of the cavity. By way of the action of a pair of
synchronous gears, the two rotors rotate in reverse instructions and Relying on the mutual engagement of the two
rotors, the suction port and the discharge port are isolated, and the gasoline in the chamber is pushed to attain the
function of blowing.

Feature of our roots blower:
1. Large adjustment of the air quantity
two. Lower Sounds
three. Large efficiency
four. Minimal strength cosumption
five. Lengthy time life
6. Reliable working, straightforward servicing,tiny footprint

The parameters of our roots blower:

Sort Ratary Velocity
Pressure Rise
Shaft Power
Motor Unit Maximn
ESR-fifty 1100-2120 9.eight-58.eight .65-two.58 .3-3.54 .75-four 128-158
ESR-65 1100-2130 9.eight-58.8 .94-3.66 .38-four.forty six .seventy five-five.5 a hundred and fifty five-185
ESR-eighty 1140-1900 nine.eight-58.8 2.34-five.forty three one.04-7.42 2.two-eleven one hundred fifty five-277
ESR-a hundred 1060-1980 9.eight-58.eight four.57-nine.05 one.35-twelve.15 three-15 309-377
ESR-a hundred twenty five 980-1850 9.eight-fifty eight.8 five.35-twelve.4 one.65-five.19 5.5-eighteen.5 408-451
ESR-125C 970-1830 nine.8-fifty eight.8 7.5-seventeen.fifty seven three.two-eighteen.5 4-22 408-451
ESR-one hundred fifty 810-1730 9.8-58.8 10.37-27.15 three.84-40.82 seven.five-forty five 688-848
ESR-a hundred seventy five 970-1520 nine.8-fifty eight.8 19.65-36.sixty five 7.two-forty five.ninety five eleven-55 980-1080
ESR-200B 740-1450 nine.8-58.eight 19.sixty five-forty four.8 ten.15-sixty.44 15-75 1272-1546
ESR-200 810-1480 nine.8-fifty eight.8 27.sixty five-fifty nine.two 8.05-80,12 15-90 1272-1546
ESR-250B 1100-1480 9.eight-fifty eight.8 54.77-77.55 19.97-90.ninety seven 30-110 1490-2454
ESR-250 990-1480 9.8-fifty eight.eight 61.four-ninety seven.fifty two 30-132 1490-2454
ESR-three hundred 990-1480 nine.8-58.8 87.1-138.1 26.four-167.8 37-185 3326-3446
ESR-350 730-1480 nine.eight-fifty eight.8 seventy eight.forty one-177.31   fifty five-250  
ESR-50H 1230-2120 sixty three.7-ninety eight .45-two.02 2.05-6.twelve 3-7.five a hundred and sixty–170
ESR-65H 1240-2130 sixty three.7-ninety eight .seventy eight-2.fifty three 2.89-7.fifty five four-11 198-230
ESR-80H 1140-1900 sixty three.7-98 1.82-4.fifty five 5.5-15 316-326
ESR-100H 1060-1980 sixty eight two.65-8.06 6.36-17.2 7.5-22 398-459
ESR-125H 980-1850 63.7-98 4.sixty four-11.23 eight.ninety two-24.2 eleven-30 544-630
ESR-150H 810-1730 sixty 9.53-25.seventy six seventeen.sixteen-sixty five 18.5-seventy five 752-1571
ESR-200H 810-1480 eight twenty five.34-56.92 forty two.34-one hundred twenty fifty five-132 1426-1934
ESR-250H 990-1480 63.7-98 fifty eighty three.2-205 ninety-220 2980-3468
ESR300H 990-1480 sixty three.7-ninety eight 114.7-270 132-280 3476-3998
ERF-245 650-980 nine.eight-ninety eight 47.five-97.four 16-183 eighteen.five-two hundred 3630-3690
ERF-250 650-980 nine.eight-98 sixty one.6-a hundred and twenty.4 19-227 22-250 4450-4500
ERF-290 650-980 9.8-78.four 92.3-128 22-213 thirty-250 4890-4710
ERF-295 650-980 nine.eight-seventy eight.four ninety seven.3-152.5 23-227 thirty-250 4890-4880
ERF-297 650-980 nine.8-78.4 87.five-167.6 26-249 thirty-280 5330-5520
ERF-three hundred 650-980 nine.eight-78.four one zero 29-278 37-315 5330-5520
ERF-350 650-980 nine.8-78.four 126-224.nine 34-249 45-280 5210-6470
ERG-three hundred 590-730 nine.eight-98 128.3-196 38-362 45-400 9440-15710
ERG-350 590-730 9.eight-ninety eight 159.3-231.six 43-420 fifty five-450 9700-1571
ERG-four hundred 590-730 9.8-83.3 fifty two-449 75-five hundred 10090-11390
ERG-445 590-730 nine.eight-73.5 fifty eight-477 seventy five-560 10600-12230
ERG-450 590-730 nine.eight-73.5 262.4-366.two 64-496 seventy five-560 10600-12230
ERG-500 590-730 327.four-452.4 78-529 90-560 12790-14620
ERF-240-V 650-980 -9.8- -forty nine eight thirteen-76 eighteen.5-90 3420-3285
ERF-245-V 650-980 -nine.eight- -forty nine forty seven.5-97.4 sixteen-95 22-one hundred ten 3425-3360
ERF-250-V 650-980 -9.8- -49 sixty three-a hundred and twenty 19-117 22-132 3910-3830
ERF-290-V 650-980 -nine.8- -49 72.6-one hundred forty four 22-136 thirty-one hundred sixty 4415-4270
ERF-295-V 650-980 -9.eight- -49 76.6-152 23-a hundred forty five thirty-160 4425-4485
ERF-297-V 650-980 -9.8- -forty nine eighty four.3-166.eight 26-160 30-a hundred and eighty 5000-4980
ERF-three hundred-V 650-980 -9.8- -49 ninety seven-192 29-178 37-two hundred 5000-4980
ERF-350-V 650-980 -nine.eight- -forty nine 116-225 34-209 45-250 5400-5700
ERG-300V 590-730 -nine.8- -forty nine 133-193 38-184 45-220 7800-9100
ERG-350V 590-730 -nine.eight- -49 163-231 forty three-216 55-250 9500-9470
ERG-400V 590-730 -nine.8- -49 199-290 52-269 seventy five-315 9900-10130
ERG-445V 590-730 -9.eight- -forty nine 224.eight-326.9 58-303 75-355 9900-10130
ERG-450V 590-730 -9.8- -49 255-365 sixty four-335 75-four hundred 11230-11300
ERG-500V 590-730 -9.8- -49 314-452 seventy eight-412 132-450 13630-13850
ERF-245W 650-980 -13.three- -fifty three.3 53.five-one zero one 21.5-102 30-one hundred ten 3630-3360
ERF-250W 650-980 -thirteen.3- -53.3 sixty nine-127 26.5-127 thirty-one hundred sixty 3985-4115
ERF-290W 650-980 -thirteen.3- -53.3 eighty two.6-150 thirty.5-149 37-185 4340-4580
ERF-295W 650-980 -thirteen.three- -53.3 87-158 32-158 37-185 4440-4580
ERF-297W 650-980 -13.three- -53.3 ninety five-174 36-174 forty five-two hundred 5230-5130
ERF-300W 650-980 -13.3- -fifty three.three 109-195 40-193 55-220 5230-5130
ERF-350W 650-980 -thirteen.three- -fifty three.3 129-230 fifty-230 75-250 5840-5670
ERG-300W 590-730 -thirteen.three- -fifty three.three 142-197 fifty two-201 seventy five-220 9100-9000
ERF-350W 590-730 -thirteen.three- -fifty three.3 168-234.four 59-235.five 75-280 9500-9600
ERG-400W 590-730 -13.3- -fifty three.3 220-276.6 seventy one-292 ninety-315 9900-10130
ERG-445W 590-730 -13.3- -53.3 244-294.6 82-331 ninety-400 11230-11300
ERG450W 590-730 -thirteen.three- -fifty three.three 275-368.5 91-366 one hundred ten-four hundred 11230-11300
650-980 98-196 64.eight-112 one hundred thirty five-355 one hundred sixty-400 8700-8600
650-980 ninety eight-196 80.eight-139 167-439 185-500 9200-9100
ETRF-three hundred
650-980 ninety eight-176.4 102-174 206-497 250-560 10320-10500
650-980 98-137.two 124-207 241-473 280-560 10700-11110
ETRG-four hundred
(three hundred,four hundred)
590-740 ninety eight-176.four 205-273 380-773 450-900 21350-24200
590-740 ninety eight-176.4 263-428 476-955 560-a thousand 24200-27600
650-980 -53.3–80 72-121 seventy five.6-121 ninety-160 6100-6470
650-980 -fifty three.3–eighty 93.8-154 99.5-186 a hundred and ten-220 7000-6400
(2505/three hundred)
650-980 -53.three–eighty 116-189 a hundred and fifteen-220 132-250 7750-7760
EL81WD 580-980 nine.8-fifty eight.eight 54.2-one hundred thirty eighteen-151 forty five-185 3595
EL82WDB 580-980 9.8-58.eight seventy two.eight-161 22-191 45-220 3860
EL83WDA 580-980 nine.eight-58.9 one hundred and one-213 28.five-202 forty five-220 4300
EL84WDA 580-980 nine.eight-58.eight 129-267 35.4-252 forty five-280 4720
EL93WDA 580-730 nine.8-forty nine 230-329 56.four-311 seventy five-355 7765
EL94WDA 580-730 nine.eight-49 263-373 64-353 seventy five-four hundred 8130
EL95WDA 490-580 nine.eight-58.eight 308-434 eighty one.four-414 90-450 11500
EL96WDA 580 58.eight 381 497 560 11500
E397WN 1000-1650 forty five-9      
E408WN 870-1650 40 ten-22      
E517WN 980-1580 forty twenty-thirty      
E520WN 930-1550 forty 24-forty five      
E607WN 750-1250 forty forty five-76      
E610WN 750-1250 40 75-130      

Spare parts and composition of our roots blower:

Package deal of our Roots Blower

Pack into iron situation, two layer,blower entire body and motor in decrease layer, inlet/out silencer and many others in higher layer

Roots blower pack method identical as iron situation, just modify to Fumigation Totally free Plywood Circumstance

Our factory is a specialist producer of Roots blowers which has more than 20 years’ experience in machinery
production. It is located in Xihu (West Lake) Dis. CZPT CZPT Park, fifty kilometers to the east of ZheJiang provincial
cash— HangZhou. Our firm also has hassle-free site visitors transportation, as it is 15 kilometers away from
Diaozhen City station of HangZhou-HangZhou expressway, and 30 kilometers away from CZPT HangZhou station of
ZheJiang -ZheJiang expressway.The major merchandise of our organization is ESR -sort Roots Blower. The roots
vacuum pump is a new type of substantial-efficiency roots blower, which is produced independently dependent on the
domestic and overseas innovative technologies. Many patented technologies have been adopted on Roots
Blower, and hence we have produced significant effects in power conservation and noise reduction, etc.. So considerably, our
company has invested far more than thirty,000,000 RMB to introduce this sort of advanced expert tools as
horizontal machining heart, vertical machining center, two-way CNC area planer, CNC lathe, CNC milling
machine, CNC planer, plane grinder, cylindrical grinding equipment, and a few coordinates testing device.
Besides, we have taken numerous steps to CZPTize the procedure stream these kinds of as functioning and cooperating
with several scientific research units, faculties and universities at home and overseas. We also repeatedly try out to
soak up and increase the domestic advanced production technologies, so as to encourage the upgrading and
optimization of the solution and make the merchandise high quality get to the superior amount at home and abroad.
ESR -sort Roots Blower consists of many sequence this kind of as 3-leaves Sort, Two-leaves Variety and Centrifugal
Type,which can be even more divided to hundreds of versions. The goods are extensively used in sewage therapy,
pneumatic conveying,vacuum packaging, aquaculture, meals processing, electric powered electricity, petrochemical, cement,
mining and other industries. Our merchandise have such rewards as reduced sound, power preserving, steady quality,
and long support lifestyle, and many others.. With the product sales outlets throughout the domestic funds metropolitan areas, our merchandise sell properly all
more than the region, and have been exported to North CZPTica,Russia, Malaysia, Indonesia, Vietnam, South Africa
and some other international locations. Having got the ISO9001 CZPT CZPT Program Certification, we have
set up and enhanced the top quality assurance of the products developing, production, and installation.
From the process of layout, analysis and improvement to the completed items, we have got the total
approach controlled independently, thus offering the full foundation and reliability promise for the items security
and durability. Possessing a perfect revenue network and following-income service, we give our clients with greater-
good quality and a lot more effective services.All staff of our company sincerely welcome the wide masses of friends to
guide, and negotiate enterprise with us.

Our Roots Blower Workshop

         Doosn Horzitonal CZPT Heart

The Application of the Roots Blower

Upkeep and inspection
(1) Check all fasteners and finding pins conditions regardless of whether they are loosening.
(two) Often check no matter whether the leakage phenomenon of the body.
(three) Pay consideration to lubrication, quantity of grease and noises when working,
establish no matter whether it operates beneath the essential conditions.
(four) CZPT & grease: The lubricant is for medium load industrial gear oil
(quality 220, kinematic viscosity of 198 ~ 242mm2 / s 40ºC, flash stage ≥ 200ºC)
The grease is butter (synthetic lithium grease penetration 220-250, drop position ≥
190ºC). Change the lubricant and grease right after initial two hundred hrs operating, and change
once more following a moth managing. Later, replace the lubricant and grease in accordance to the
environment and lubricant (grease) quality suggest a appropriate replacement for 3
(5) Constantly check out the inlet air filter, clean or exchange the filter in time.
(six) Blower overload often not quickly exhibited, so spend attention to
the consumption and exhaust pressure, bearing temperature and the current enhance traits
of motor to decide no matter whether the blower operates generally
(seven) Ahead of disassembling the blower, the assembling relation and dimensions
should be recorded or calculated, make marks on components to make sure the CZPT
needs soon after assembling.
(8) When newly equipment or overhaul, the oil tank must be cleaned just before use
and suggest exchange all grease right after eight hours working.

Frequent failure purpose and troubleshooting

No Failure Attainable reasons Elimination techniques
one Friction
among the
(one) Impurities on the impeller,
resulting in the hole is as well tiny
(2) Equipment use, resulting in a
massive backlash
(three) The gear is not nicely mounted,
can not maintain the impeller
(4) Bearing wear resulting in
clearance increasing.
(one) Remove dirt and examine
no matter whether there is injury elements
(two) Adjust the equipment hole, change
the gears if the gear backlash is
increased than the regular thirty% to
(three)Re-assemble the gears, preserve
the taper contact location is to seventy five%
(four)Substitute the bearing
2 Collision
impeller and
wall, the
impeller prime
and casing
(one) Installation hole is not appropriate
(two) operating stress is also
higher, exceeding the specified
(three) Running temperature is also higher
(four) Casing or foundation deformation,
positioning supporter failure
(five) Bearing axial location is not great
(1) Alter the gap
(two) Recognize brings about of
overloading, diminished the force
to the specified worth
(3) Verify the set up
accuracy and lessen the pipe
(four) Check and fix bearings,
and to make certain the clearance
three Temperature
as well high
(one) Oil in tank is way too significantly, also
thick or also dirty
(two) CZPT or silencer is blocked
(three)The stress is increased than
the specified price
(four)Too much put on of the
impeller, large gap
(five)Poor ventilation, indoor
temperature is higher, ensuing in
inlet air’s high temperature
(6) The rotating speed is too reduced,result in the belt slipping.
(one)Decrease the oil amount or count on
(2)Eliminate of blocking objects
(three)Lowering the strain through
the blower
(four)Mend its clearance
(five)Open vents to minimize room
(6) Improve pace to avert the
belt slipping.
four Inadequate
(one) The inlet filter is blocked
(2) Impeller put on and the gap
boosts as well much
(3) Belt slipping
(four) Big imports force reduction
(5) CZPT ventilation leakage
(1) Clean the filter dust and
(two) Fix the hole
(three)Tighten the belt and boost
the quantity of belts
(4)Adjust the inlet strain to the
specified value
(five) Check out and restore the pipeline
five Oil leaking or
oil leaking
into the enclosure
(one)Substantial tank situation result in
leakage from the discharge port
(2) Seal wear, resulting in shaft oil spills
(3) The force is higher than
the specified benefit

(one)Reduce the oil degree
(2)Change the seals
(3)Distinct the air vents, 2mm diameter faucet is fixed in the
middle chamber, open up the faucet
below the wall
six Irregular
vibration and
(one)Bearing clearance exceeds the
specified benefit or bearing dress in
(two) The equipment backlash is way too
large, not in a restricted fixed
(3) The overseas objects and dust
triggered by the impeller and the
impeller, the impeller and the
housing collision
(4) the impeller shaft
deformation induced the collision
caused by overload,
(five) Friction in between the impeller
and the inlet housing triggered by
(six) Unbalance of the impeller
brought on by fouling or foreign
entire body
(7) CZPT bolts or other
fasteners are loosened
(1)Exchange bearings or bearing
(two)Reassemble equipment and ensure
(3)Cleaning blower, verify the
case is destroyed
(four)Examine the back strain, verify
the wheel and adjust hole
(5)Examine the filter and back
force, improve the gap
in between the impeller inlet and the
(6)Clear the impeller and the
casing, to ensure that the impeller
clearance function
(7) Tighten the anchor bolts and
leveling the base.
seven Motor
(1)Compared with the needed
stress, the stress big difference
is massive that the back again strain or
the inlet pressure is high
(two) In comparison with the
gear requirements, blower
stream is too big, so its strain
(3)Inlet filter is blocked, or outlet
pipe is obstructed or blocked
(4) Collusion or friction (trapped)
rotating parts
(five) The oil amount is too large
(six) Slender V-belt is overheat,
vibration is also large, or pulley
is as well small
(1) Reduce the force to the
specified worth
(2) Exhaust the excess gas into
the ambiance or minimize the
blower velocity
(three) Eliminate the obstructions
(4)Immediately shut down, check out
the explanation
(five) Change the oil to the appropriate
(6) Verify the belt tension, and
replaced it with massive diameter

Our Services

one. Pre promote service                                                                              2. Soon after offer service                                          
a. suggest the appropriate model                                             c. online technical support,                                                                                   
b. manufacturing unit tour                                                                              d. total existence spare components and techinical help


twelve months gurantee for our roots blowers

Two Stage High Pressure Roots Blower


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