Two Stage High Pressure Roots Blower

Two Stage High Pressure Roots Blower

We make all types of roots blower, centrifugal blower, Our Primary products are as beneath:

Type Diameter Fee of circulation Pressure
ESR-MJ(Intensive Sort) Φ50~Φ300mm .5~140m³/min nine.8KPa~ninety eight.8Kpa
ESR(Normal Variety) Φ50~Φ350mm .five~140m³/min 9.8KPa~78.4Kpa
ESR-H(Substantial-strain Sort) Φ50~Φ350mm .seven~160m³/min 58.8KPa~98.8Kpa
ESR-V(Vacuum Pump) Φ50~Φ350mm .five~160m³/min nine.8KPa~fifty three.3Kpa
EL Collection Φ200~Φ600mm twenty.three~750m³/min 9.8KPa~fifty eight.8Kpa
Multistage Centrifugal Blower
or C-Collection
Φ250~Φ500mm 50~500m³/min nine.8KPa~98Kpa
ERR-ERG Type Φ250~Φ500mm a hundred and twenty~420m³/min 9.8KPa~98.8Kpa

The functioning principle of the a few-blade roots blower: two 3-lobed rotors are arranged in the cavity, and the
suction port and the discharge port are opened on both sides of the cavity. By means of the action of a pair of
synchronous gears, the two rotors rotate in reverse directions and Relying on the mutual engagement of the two
rotors, the suction port and the discharge port are isolated, and the fuel in the chamber is pushed to achieve the
goal of blowing.

Feature of our roots blower:
1. Big adjustment of the air volume
2. Minimal Noise
three. Large performance
4. Low strength cosumption
5. Prolonged time life
six. Trustworthy working, easy maintenance,small footprint

The parameters of our roots blower:

Kind Ratary Velocity
Force Increase
Shaft Electrical power
Motor Unit Maximn
ESR-50 1100-2120 9.8-58.eight .65-two.fifty eight .three-3.fifty four .75-four 128-158
ESR-sixty five 1100-2130 9.8-58.eight .ninety four-3.66 .38-four.46 .seventy five-5.five 155-185
ESR-eighty 1140-1900 nine.8-58.eight 2.34-five.forty three one.04-seven.forty two 2.2-11 one hundred fifty five-277
ESR-one hundred 1060-1980 9.8-58.eight four.fifty seven-9.05 1.35-12.15 3-fifteen 309-377
ESR-125 980-1850 nine.eight-58.8 5.35-12.4 1.65-5.19 5.five-eighteen.5 408-451
ESR-125C 970-1830 nine.8-58.8 seven.five-seventeen.fifty seven three.2-18.5 four-22 408-451
ESR-a hundred and fifty 810-1730 nine.8-58.eight ten.37-27.fifteen 3.eighty four-forty.eighty two seven.5-forty five 688-848
ESR-a hundred seventy five 970-1520 9.eight-fifty eight.eight 19.65-36.65 7.two-45.95 eleven-55 980-1080
ESR-200B 740-1450 nine.8-58.8 19.65-44.eight 10.fifteen-60.44 15-seventy five 1272-1546
ESR-two hundred 810-1480 9.8-58.8 27.65-fifty nine.2 8.05-80,twelve 15-90 1272-1546
ESR-250B 1100-1480 nine.eight-58.8 54.77-seventy seven.fifty five 19.ninety seven-ninety.ninety seven thirty-a hundred and ten 1490-2454
ESR-250 990-1480 9.eight-fifty eight.8 61.four-97.fifty two 20.1-117.three thirty-132 1490-2454
ESR-300 990-1480 nine.eight-58.8 87.1-138.1 26.4-167.eight 37-185 3326-3446
ESR-350 730-1480 nine.eight-fifty eight.eight 78.41-177.31   55-250  
ESR-50H 1230-2120 .forty five-two.02 2.05-six.12 three-7.five one hundred sixty–170
ESR-65H 1240-2130 63.7-98 .seventy eight-2.fifty three 2.89-7.fifty five 4-11 198-230
ESR-80H 1140-1900 sixty eight 1.82-4.fifty five 4.09-ten.1 five.5-15 316-326
ESR-100H 1060-1980 63.7-98 two.sixty five-eight.06 6.36-seventeen.2 7.5-22 398-459
ESR-125H 980-1850 eight four.sixty four-eleven.23 8.92-24.two 11-thirty 544-630
ESR-150H 810-1730 nine.53-twenty five.seventy six seventeen.sixteen-65 18.5-seventy five 752-1571
ESR-200H 810-1480 25.34-fifty six.ninety two forty two.34-a hundred and twenty fifty five-132 1426-1934
ESR-250H 990-1480 sixty three.7-98 58-ninety three.7 83.two-205 90-220 2980-3468
ESR300H 990-1480 63.7-98 86.nine-134.1 132-280 3476-3998
ERF-245 650-980 nine.eight-ninety eight 47.five-ninety seven.4 sixteen-183 eighteen.five-two hundred 3630-3690
ERF-250 650-980 9.eight-98 61.6-one hundred twenty.four 19-227 22-250 4450-4500
ERF-290 650-980 9.eight-78.four 92.three-128 22-213 30-250 4890-4710
ERF-295 650-980 9.eight-78.4 ninety seven.three-152.five 23-227 30-250 4890-4880
ERF-297 650-980 9.eight-78.4 87.five-167.6 26-249 30-280 5330-5520
ERF-300 650-980 9.8-seventy eight.four a hundred and one.5-188.7 29-278 37-315 5330-5520
ERF-350 650-980 nine.eight-seventy eight.four 126-224.9 34-249 forty five-280 5210-6470
ERG-300 590-730 9.8-98 128.three-196 38-362 45-400 9440-15710
ERG-350 590-730 nine.eight-98 159.3-231.six forty three-420 fifty five-450 9700-1571
ERG-four hundred 590-730 9.8-83.3 203.1-290.nine 52-449 seventy five-five hundred 10090-11390
ERG-445 590-730 9.eight-seventy three.five 229.7-327.eight 58-477 seventy five-560 10600-12230
ERG-450 590-730 9.eight-seventy three.5 262.4-366.two 64-496 75-560 10600-12230
ERG-five hundred 590-730 327.four-452.4 78-529 90-560 12790-14620
ERF-240-V 650-980 -nine.8- -forty nine 38.1-78 13-76 eighteen.five-90 3420-3285
ERF-245-V 650-980 -9.eight- -49 47.5-97.four 16-95 22-one hundred ten 3425-3360
ERF-250-V 650-980 -9.eight- -49 sixty three-a hundred and twenty 19-117 22-132 3910-3830
ERF-290-V 650-980 -nine.8- -forty nine 72.six-144 22-136 30-a hundred and sixty 4415-4270
ERF-295-V 650-980 -9.eight- -49 seventy six.six-152 23-a hundred forty five 30-one hundred sixty 4425-4485
ERF-297-V 650-980 -9.eight- -forty nine eighty four.three-166.8 26-160 30-one hundred eighty 5000-4980
ERF-three hundred-V 650-980 -nine.8- -49 ninety seven-192 29-178 37-200 5000-4980
ERF-350-V 650-980 -9.8- -49 116-225 34-209 45-250 5400-5700
ERG-300V 590-730 -nine.8- -49 133-193 38-184 45-220 7800-9100
ERG-350V 590-730 -nine.eight- -49 163-231 43-216 fifty five-250 9500-9470
ERG-400V 590-730 -nine.8- -49 199-290 52-269 seventy five-315 9900-10130
ERG-445V 590-730 -nine.eight- -forty nine 224.8-326.9 fifty eight-303 75-355 9900-10130
ERG-450V 590-730 -9.eight- -forty nine 255-365 64-335 seventy five-four hundred 11230-11300
ERG-500V 590-730 -9.8- -49 314-452 78-412 132-450 13630-13850
ERF-245W 650-980 -13.3- -fifty three.3 fifty three.five-a hundred and one 21.5-102 thirty-one hundred ten 3630-3360
ERF-250W 650-980 -thirteen.3- -53.3 sixty nine-127 26.five-127 thirty-one hundred sixty 3985-4115
ERF-290W 650-980 -thirteen.3- -53.3 eighty two.6-one hundred fifty thirty.five-149 37-185 4340-4580
ERF-295W 650-980 -thirteen.3- -53.three 87-158 32-158 37-185 4440-4580
ERF-297W 650-980 -thirteen.three- -fifty three.three 95-174 36-174 45-200 5230-5130
ERF-300W 650-980 -thirteen.3- -fifty three.three 109-195 forty-193 fifty five-220 5230-5130
ERF-350W 650-980 -thirteen.three- -fifty three.three 129-230 50-230 75-250 5840-5670
ERG-300W 590-730 -thirteen.3- -fifty three.three 142-197 52-201 75-220 9100-9000
ERF-350W 590-730 -13.3- -fifty three.3 168-234.four 59-235.five seventy five-280 9500-9600
ERG-400W 590-730 -13.3- -53.three 220-276.6 71-292 90-315 9900-10130
ERG-445W 590-730 -13.three- -fifty three.three 244-294.6 eighty two-331 ninety-four hundred 11230-11300
ERG450W 590-730 -13.three- -53.3 275-368.five 91-366 one hundred ten-four hundred 11230-11300
650-980 ninety eight-196 64.eight-112 one hundred thirty five-355 one hundred sixty-four hundred 8700-8600
650-980 ninety eight-196 eighty.eight-139 167-439 185-500 9200-9100
ETRF-three hundred
650-980 98-176.four 102-174 206-497 250-560 10320-10500
650-980 98-137.two 124-207 241-473 280-560 10700-11110
590-740 ninety eight-176.4 205-273 380-773 450-900 21350-24200
590-740 ninety eight-176.4 263-428 476-955 560-one thousand 24200-27600
650-980 -fifty three.three–80 seventy two-121 75.6-121 ninety-a hundred and sixty 6100-6470
650-980 -53.3–80 ninety three.8-154 99.five-186 one hundred ten-220 7000-6400
650-980 -53.three–eighty 116-189 a hundred and fifteen-220 132-250 7750-7760
EL81WD 580-980 9.eight-fifty eight.8 54.two-130 eighteen-151 forty five-185 3595
EL82WDB 580-980 nine.eight-fifty eight.eight seventy two.eight-161 22-191 forty five-220 3860
EL83WDA 580-980 nine.eight-fifty eight.9 one hundred and one-213 28.five-202 45-220 4300
EL84WDA 580-980 nine.eight-58.8 129-267 35.4-252 45-280 4720
EL93WDA 580-730 9.eight-49 230-329 56.four-311 seventy five-355 7765
EL94WDA 580-730 nine.eight-forty nine 263-373 64-353 75-400 8130
EL95WDA 490-580 9.8-58.8 308-434 81.four-414 90-450 11500
EL96WDA 580 fifty eight.eight 381 497 560 11500
E397WN 1000-1650 40 5-9      
E408WN 870-1650 forty 10-22      
E517WN 980-1580 40 twenty-30      
E520WN 930-1550 forty 24-forty five      
E607WN 750-1250 forty 45-76      
E610WN 750-1250 40 seventy five-130      

Spare elements and composition of our roots blower:

Deal of our Roots Blower

Pack into iron situation, two layer,blower entire body and motor in reduced layer, inlet/out silencer and so forth in higher layer

Roots blower pack method very same as iron situation, just adjust to Fumigation Free Plywood Circumstance

Our manufacturing facility is a expert maker of Roots blowers which has more than twenty years’ experience in machinery
production. It is located in Xihu (West Lake) Dis. CZPT CZPT Park, fifty kilometers to the east of ZheJiang provincial
capital— HangZhou. Our firm also has hassle-free targeted traffic transportation, as it is fifteen kilometers away from
Diaozhen City station of HangZhou-HangZhou expressway, and 30 kilometers away from CZPT HangZhou station of
ZheJiang -ZheJiang expressway.The leading merchandise of our organization is ESR -kind Roots Blower. The roots
vacuum pump is a new sort of high-performance roots blower, which is created independently primarily based on the
domestic and foreign sophisticated technologies. Several patented technologies have been adopted on Roots
Blower, and hence we have manufactured substantial outcomes in power conservation and noise reduction, and many others.. So much, our
organization has invested much more than 30,000,000 RMB to introduce this kind of superior specialist tools as
horizontal machining middle, vertical machining middle, two-way CNC floor planer, CNC lathe, CNC milling
equipment, CNC planer, airplane grinder, cylindrical grinding device, and three coordinates screening equipment.
In addition to, we have taken various measures to CZPTize the procedure movement such as functioning and cooperating
with a lot of scientific research units, colleges and universities at home and abroad. We also continuously try out to
soak up and boost the domestic superior manufacturing systems, so as to promote the upgrading and
optimization of the item and make the product quality reach the superior stage at home and abroad.
ESR -variety Roots Blower involves numerous series this sort of as A few-leaves Kind, Two-leaves Variety and Centrifugal
Type,which can be even more divided to hundreds of kinds. The products are commonly utilized in sewage treatment,
pneumatic conveying,vacuum packaging, aquaculture, meals processing, electric powered electricity, petrochemical, cement,
mining and other industries. Our items have such benefits as minimal noise, strength saving, steady top quality,
and long services life, and many others.. With the sales outlets throughout the domestic cash cities, our merchandise offer nicely all
more than the country, and have been exported to North CZPTica,Russia, Malaysia, Indonesia, Vietnam, South Africa
and some other nations. Getting got the ISO9001 CZPT CZPT System Certification, we have
set up and improved the quality assurance of the items developing, manufacturing, and set up.
From the procedure of design, investigation and growth to the concluded goods, we have got the total
method managed independently, therefore providing the complete basis and dependability promise for the items balance
and longevity. Possessing a perfect revenue community and right after-sales services, we offer our buyers with larger-
top quality and more effective support.All employees of our firm sincerely welcome the broad masses of pals to
guide, and negotiate business with us.

Our Roots Blower Workshop

         Doosn Horzitonal CZPT Heart

The Software of the Roots Blower

Upkeep and inspection
(1) Check out all fasteners and finding pins situations whether or not they are loosening.
(two) Always check whether the leakage phenomenon of the body.
(three) Pay focus to lubrication, volume of grease and noises when operating,
figure out whether or not it works under the needed circumstances.
(4) CZPT & grease: The lubricant is for medium load industrial equipment 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). Exchange the lubricant and grease right after initial 200 hours managing, and substitute
yet again following a moth operating. Afterwards, substitute the lubricant and grease in accordance to the
environment and lubricant (grease) good quality suggest a ideal substitute for a few
(5) Usually check the inlet air filter, thoroughly clean or substitute the filter in time.
(six) Blower overload often not quickly exhibited, so shell out attention to
the consumption and exhaust pressure, bearing temperature and the current boost developments
of motor to decide no matter whether the blower performs normally
(seven) Ahead of disassembling the blower, the assembling relation and dimensions
have to be recorded or measured, make marks on components to ensure the CZPT
needs right after assembling.
(8) When newly equipment or overhaul, the oil tank need to be cleaned ahead of use
and propose substitute all grease after eight several hours managing.

Common failure explanation and troubleshooting

No Failure Attainable reasons Elimination methods
1 Friction
in between the
(1) Impurities on the impeller,
resulting in the gap is as well tiny
(2) Equipment wear, resulting in a
big backlash
(three) The equipment is not effectively fastened,
can not preserve the impeller
(4) Bearing dress in ensuing in
clearance escalating.
(one) Get rid of grime and check
whether there is harm areas
(two) Modify the equipment hole, change
the gears if the equipment backlash is
increased than the average 30% to
(three)Re-assemble the gears, maintain
the taper contact area is to 75%
(4)Change the bearing
2 Collision
in between
impeller and
wall, the
impeller prime
and casing
(one) Installation gap is not proper
(two) running pressure is as well
higher, exceeding the specified
(three) Running temperature is too large
(four) Casing or base deformation,
positioning supporter failure
(5) Bearing axial spot is not great
(one) Modify the hole
(two) Recognize triggers of
overloading, diminished the force
to the specified worth
(three) Examine the set up
accuracy and minimize the pipe
(four) Verify and fix bearings,
and to ensure the clearance
3 Temperature
also substantial
(1) Oil in tank is as well much, way too
thick or as well filthy
(2) CZPT or silencer is blocked
(three)The pressure is increased than
the specified value
(4)Abnormal wear of the
impeller, large gap
(5)Inadequate ventilation, indoor
temperature is large, ensuing in
inlet air’s large temperature
(6) The rotating velocity is way too minimal,end result in the belt slipping.
(one)Reduce the oil amount or count on
(2)Remove of blocking objects
(3)Reducing the stress by way of
the blower
(4)Repair its clearance
(5)Open up vents to decrease room
(6) Improve speed to avert the
belt slipping.
4 Inadequate
(one) The inlet filter is blocked
(two) Impeller wear and the hole
will increase as well a lot
(three) Belt slipping
(four) Big imports stress reduction
(five) CZPT air flow leakage
(one) Cleanse the filter dust and
(two) Repair the hole
(3)Tighten the belt and boost
the amount of belts
(four)Change the inlet stress to the
specified price
(5) Verify and fix the pipeline
5 Oil leaking or
oil leaking
into the enclosure
(1)Higher tank placement trigger
leakage from the discharge port
(2) Seal use, resulting in shaft oil spills
(3) The pressure is increased than
the specified value

(1)Decrease the oil amount
(two)Substitute the seals
(three)Clear the air vents, 2mm diameter faucet is set in the
middle chamber, open the faucet
underneath the wall
six Abnormal
vibration and
(1)Bearing clearance exceeds the
specified worth or bearing use
(2) The gear backlash is also
massive, not in a tight fixed
(3) The foreign objects and dust
triggered by the impeller and the
impeller, the impeller and the
housing collision
(4) the impeller shaft
deformation triggered the collision
brought on by overload,
(five) Friction in between the impeller
and the inlet housing brought on by
(6) Unbalance of the impeller
brought on by fouling or overseas
human body
(seven) CZPT bolts or other
fasteners are loosened
(one)Change bearings or bearing
(two)Reassemble gear and make sure
(3)Cleansing blower, verify the
case is broken
(4)Check the again strain, verify
the wheel and alter hole
(five)Examine the filter and back again
force, increase the gap
among the impeller inlet and the
(six)Cleanse the impeller and the
casing, to guarantee that the impeller
clearance work
(7) Tighten the anchor bolts and
leveling the foundation.
7 Motor
(one)When compared with the essential
force, the stress difference
is big that the again force or
the inlet pressure is large
(2) In contrast with the
tools requirements, blower
circulation is too massive, so its pressure
will increase
(3)Inlet filter is blocked, or outlet
pipe is obstructed or blocked
(four) Collusion or friction (caught)
rotating parts
(5) The oil stage is also substantial
(six) Slender V-belt is overheat,
vibration is way too huge, or pulley
is way too little
(one) Minimize the stress to the
specified benefit
(two) Exhaust the extra fuel into
the environment or lessen the
blower velocity
(three) Remove the obstructions
(four)Right away shut down, examine
the cause
(5) Alter the oil to the right
(six) Verify the belt stress, and
changed it with big diameter

Our Provider

1. Pre promote service                                                                              2. Soon after sell service                                          
a. advocate the suitable model                                             c. on the internet technical assistance,                                                                                   
b. factory tour                                                                              d. complete life spare areas and techinical assistance


twelve months gurantee for our roots blowers

Two Stage High Pressure Roots Blower