Two Stage High Pressure Roots Blower

Two Stage High Pressure Roots Blower

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

Type Diameter Charge of circulation Stress
ESR-MJ(Intense Sort) Φ50~Φ300mm .5~140m³/min nine.8KPa~ninety eight.8Kpa
ESR(Normal Kind) Φ50~Φ350mm .5~140m³/min nine.8KPa~78.4Kpa
ESR-H(Higher-pressure Sort) Φ50~Φ350mm .7~160m³/min 58.8KPa~ninety eight.8Kpa
ESR-V(Vacuum Pump) Φ50~Φ350mm .five~160m³/min 9.8KPa~53.3Kpa
EL Series Φ200~Φ600mm twenty.3~750m³/min nine.8KPa~58.8Kpa
Multistage Centrifugal Blower
or C-Collection
Φ250~Φ500mm 50~500m³/min nine.8KPa~98Kpa
ERR-ERG Kind Φ250~Φ500mm 120~420m³/min nine.8KPa~98.8Kpa

The working principle of the three-blade roots blower: two 3-lobed rotors are arranged in the cavity, and the
suction port and the discharge port are opened on the two sides of the cavity. Via 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 gas in the chamber is pushed to attain the
objective of blowing.

Function of our roots blower:
1. Huge adjustment of the air volume
2. Low Sounds
three. High performance
four. Low energy cosumption
five. Long time existence
six. Dependable managing, straightforward maintenance,modest footprint

The parameters of our roots blower:

Type Ratary Speed
Pressure Increase
Shaft Power
Motor Unit Maximn
ESR-50 1100-2120 nine.eight-fifty eight.8 .sixty five-2.58 .three-three.54 .seventy five-4 128-158
ESR-65 1100-2130 nine.eight-58.eight .ninety four-3.66 .38-4.46 .75-5.5 a hundred and fifty five-185
ESR-80 1140-1900 nine.8-58.8 2.34-five.forty three one.04-seven.forty two 2.two-eleven one hundred fifty five-277
ESR-100 1060-1980 nine.eight-58.8 4.57-9.05 one.35-twelve.15 three-fifteen 309-377
ESR-125 980-1850 9.eight-58.eight five.35-12.4 one.sixty five-five.19 five.five-eighteen.five 408-451
ESR-125C 970-1830 nine.eight-58.eight 7.five-17.57 3.two-18.five 4-22 408-451
ESR-a hundred and fifty 810-1730 9.eight-fifty eight.eight 10.37-27.fifteen 3.84-forty.eighty two 7.five-45 688-848
ESR-175 970-1520 nine.eight-fifty eight.8 19.65-36.65 7.2-45.ninety five 11-fifty five 980-1080
ESR-200B 740-1450 nine.8-58.8 19.sixty five-forty four.8 10.fifteen-sixty.44 15-seventy five 1272-1546
ESR-200 810-1480 nine.8-fifty eight.8 27.sixty five-59.2 eight.05-eighty,12 15-90 1272-1546
ESR-250B 1100-1480 9.eight-fifty eight.8 fifty four.77-77.55 19.97-90.ninety seven thirty-one hundred ten 1490-2454
ESR-250 990-1480 9.eight-fifty eight.8 61.four-97.fifty two thirty-132 1490-2454
ESR-three hundred 990-1480 nine.eight-fifty eight.eight 26.four-167.8 37-185 3326-3446
ESR-350 730-1480 nine.8-fifty eight.8 78.41-177.31   55-250  
ESR-50H 1230-2120 sixty three.7-ninety eight .45-2.02 2.05-six.12 3-seven.five 160–one hundred seventy
ESR-65H 1240-2130 63.7-ninety eight .seventy eight-two.fifty three two.89-7.fifty five 4-11 198-230
ESR-80H 1140-1900 sixty three.7-98 1.eighty two-4.fifty five 5.5-15 316-326
ESR-100H 1060-1980 sixty eight two.sixty five-eight.06 6.36-seventeen.two 7.5-22 398-459
ESR-125H 980-1850 sixty three.7-ninety eight 4.sixty four-eleven.23 eight.ninety two-24.two 11-thirty 544-630
ESR-150H 810-1730 63.7-98 nine.53-twenty five.seventy six seventeen.16-65 eighteen.5-75 752-1571
ESR-200H 810-1480 sixty three.7-ninety eight twenty five.34-fifty six.ninety two 42.34-120 fifty five-132 1426-1934
ESR-250H 990-1480 63.7-98 eighty three.two-205 ninety-220 2980-3468
ESR300H 990-1480 86.9-134.1 132-280 3476-3998
ERF-245 650-980 9.8-98 47.5-97.four sixteen-183 18.5-two hundred 3630-3690
ERF-250 650-980 9.eight-ninety eight 61.six-120.four 19-227 22-250 4450-4500
ERF-290 650-980 9.8-seventy eight.4 ninety two.three-128 22-213 30-250 4890-4710
ERF-295 650-980 9.eight-seventy eight.four ninety seven.three-152.5 23-227 thirty-250 4890-4880
ERF-297 650-980 9.8-seventy eight.4 87.5-167.six 26-249 thirty-280 5330-5520
ERF-300 650-980 9.eight-seventy eight.4 one zero 29-278 37-315 5330-5520
ERF-350 650-980 nine.eight-seventy eight.4 126-224.9 34-249 45-280 5210-6470
ERG-three hundred 590-730 9.eight-ninety eight 128.three-196 38-362 forty five-four hundred 9440-15710
ERG-350 590-730 nine.8-ninety eight 159.three-231.6 43-420 55-450 9700-1571
ERG-400 590-730 nine.eight-eighty three.3 203.1-290.9 52-449 75-500 10090-11390
ERG-445 590-730 nine.eight-73.five 229.7-327.eight fifty eight-477 seventy five-560 10600-12230
ERG-450 590-730 nine.eight-seventy three.five 262.four-366.2 sixty four-496 seventy five-560 10600-12230
ERG-five hundred 590-730 9.8-sixty three.7 327.four-452.four 78-529 90-560 12790-14620
ERF-240-V 650-980 -9.eight- -forty nine 38.1-seventy eight thirteen-seventy six eighteen.five-90 3420-3285
ERF-245-V 650-980 -9.eight- -forty nine 47.5-97.four sixteen-95 22-110 3425-3360
ERF-250-V 650-980 -nine.8- -49 63-a hundred and twenty 19-117 22-132 3910-3830
ERF-290-V 650-980 -9.eight- -49 seventy two.6-one hundred forty four 22-136 thirty-a hundred and sixty 4415-4270
ERF-295-V 650-980 -9.8- -forty nine seventy six.six-152 23-a hundred forty five thirty-160 4425-4485
ERF-297-V 650-980 -nine.eight- -49 84.three-166.8 26-160 30-one hundred eighty 5000-4980
ERF-three hundred-V 650-980 -nine.8- -forty nine 97-192 29-178 37-two hundred 5000-4980
ERF-350-V 650-980 -9.eight- -49 116-225 34-209 45-250 5400-5700
ERG-300V 590-730 -9.8- -49 133-193 38-184 45-220 7800-9100
ERG-350V 590-730 -nine.8- -49 163-231 43-216 55-250 9500-9470
ERG-400V 590-730 -nine.eight- -49 199-290 fifty two-269 seventy five-315 9900-10130
ERG-445V 590-730 -nine.eight- -forty nine 224.eight-326.nine fifty eight-303 seventy five-355 9900-10130
ERG-450V 590-730 -nine.eight- -49 255-365 sixty four-335 75-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 53.five-one hundred and one 21.5-102 30-one hundred ten 3630-3360
ERF-250W 650-980 -thirteen.three- -53.3 sixty nine-127 26.five-127 thirty-one hundred sixty 3985-4115
ERF-290W 650-980 -13.three- -53.3 82.six-a hundred and fifty 30.five-149 37-185 4340-4580
ERF-295W 650-980 -thirteen.three- -fifty three.three 87-158 32-158 37-185 4440-4580
ERF-297W 650-980 -13.three- -53.3 95-174 36-174 45-two hundred 5230-5130
ERF-300W 650-980 -thirteen.3- -fifty three.three 109-195 40-193 55-220 5230-5130
ERF-350W 650-980 -thirteen.three- -fifty three.three 129-230 fifty-230 seventy five-250 5840-5670
ERG-300W 590-730 -13.three- -fifty three.3 142-197 52-201 75-220 9100-9000
ERF-350W 590-730 -thirteen.three- -53.3 168-234.four fifty nine-235.five seventy five-280 9500-9600
ERG-400W 590-730 -thirteen.3- -53.3 220-276.6 71-292 90-315 9900-10130
ERG-445W 590-730 -13.three- -53.three 244-294.6 82-331 90-four hundred 11230-11300
ERG450W 590-730 -thirteen.three- -53.3 275-368.5 ninety one-366 one hundred ten-400 11230-11300
650-980 98-196 sixty four.8-112 a hundred thirty five-355 160-400 8700-8600
650-980 98-196 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 98-137.2 124-207 241-473 280-560 10700-11110
(300,four hundred)
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-a thousand 24200-27600
650-980 -53.three–eighty seventy two-121 seventy five.six-121 ninety-a hundred and sixty 6100-6470
650-980 -53.3–80 93.eight-154 99.five-186 a hundred and ten-220 7000-6400
650-980 -fifty three.3–80 116-189 115-220 132-250 7750-7760
EL81WD 580-980 nine.8-58.eight 54.two-a hundred thirty 18-151 forty five-185 3595
EL82WDB 580-980 9.eight-fifty eight.eight 72.eight-161 22-191 forty five-220 3860
EL83WDA 580-980 9.8-58.nine one zero one-213 28.five-202 forty five-220 4300
EL84WDA 580-980 9.8-58.8 129-267 35.four-252 forty five-280 4720
EL93WDA 580-730 nine.eight-forty nine 230-329 fifty six.4-311 seventy five-355 7765
EL94WDA 580-730 9.eight-49 263-373 64-353 75-four hundred 8130
EL95WDA 490-580 nine.8-fifty eight.8 308-434 81.4-414 90-450 11500
EL96WDA 580 fifty eight.eight 381 497 560 11500
E397WN 1000-1650 40 5-nine      
E408WN 870-1650 forty 10-22      
E517WN 980-1580 forty 20-thirty      
E520WN 930-1550 forty 24-45      
E607WN 750-1250 40 forty five-seventy six      
E610WN 750-1250 40 75-a hundred thirty      

Spare areas and structure of our roots blower:

Package deal of our Roots Blower

Pack into iron circumstance, two layer,blower physique and motor in lower layer, inlet/out silencer and so on in higher layer

Roots blower pack strategy very same as iron case, just change to Fumigation Totally free Plywood Case

Our factory is a skilled maker of Roots blowers which has over 20 years’ experience in machinery
production. It is situated in Xihu (West Lake) Dis. CZPT CZPT Park, 50 kilometers to the east of ZheJiang provincial
funds— HangZhou. Our company also has hassle-free site visitors transportation, as it is 15 kilometers away from
Diaozhen Town station of HangZhou-HangZhou expressway, and 30 kilometers absent from CZPT HangZhou station of
ZheJiang -ZheJiang expressway.The top item of our firm is ESR -sort Roots Blower. The roots
vacuum pump is a new kind of high-efficiency roots blower, which is developed independently dependent on the
domestic and overseas sophisticated systems. Many patented technologies have been adopted on Roots
Blower, and as a result we have made substantial results in power conservation and noise reduction, etc.. So far, our
company has invested much more than 30,000,000 RMB to introduce this sort of innovative skilled gear as
horizontal machining middle, vertical machining centre, two-way CNC surface planer, CNC lathe, CNC milling
equipment, CNC planer, aircraft grinder, cylindrical grinding equipment, and three coordinates screening equipment.
In addition to, we have taken various actions to CZPTize the method circulation these kinds of as working and cooperating
with a lot of scientific research units, faculties and universities at home and abroad. We also continually try out to
take up and enhance the domestic sophisticated generation technologies, so as to promote the upgrading and
optimization of the item and make the item high quality get to the innovative amount at home and overseas.
ESR -variety Roots Blower includes several collection this kind of as A few-leaves Variety, Two-leaves Variety and Centrifugal
Sort,which can be further divided to hundreds of types. The merchandise are commonly employed in sewage treatment method,
pneumatic conveying,vacuum packaging, aquaculture, foodstuff processing, electrical power, petrochemical, cement,
mining and other industries. Our merchandise have this kind of rewards as reduced noise, power saving, secure high quality,
and extended support life, and so forth.. With the revenue outlets throughout the domestic funds metropolitan areas, our items market effectively all
over the place, and have been exported to North CZPTica,Russia, Malaysia, Indonesia, Vietnam, South Africa
and some other international locations. Getting got the ISO9001 CZPT CZPT Technique Certification, we have
set up and enhanced the top quality assurance of the items designing, manufacturing, and set up.
From the approach of layout, analysis and advancement to the finished items, we have received the entire
approach managed independently, therefore offering the complete foundation and trustworthiness guarantee for the items stability
and sturdiness. Having a perfect revenue community and following-revenue service, we offer our buyers with higher-
quality and much more productive provider.All personnel of our organization sincerely welcome the broad masses of pals to
guidebook, and negotiate company with us.

Our Roots Blower Workshop

         Doosn Horzitonal CZPT Middle

The Application of the Roots Blower

Maintenance and inspection
(one) Check out all fasteners and finding pins conditions whether they are loosening.
(2) Usually check no matter whether the leakage phenomenon of the human body.
(3) Pay out interest to lubrication, amount of grease and noises when working,
decide no matter whether it operates below the necessary problems.
(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 (artificial lithium grease penetration 220-250, fall point ≥
190ºC). Change the lubricant and grease following 1st 200 several hours operating, and substitute
once more following a moth running. Later on, substitute the lubricant and grease according to the
setting and lubricant (grease) quality propose a appropriate alternative for 3
(five) Usually verify the inlet air filter, thoroughly clean or exchange the filter in time.
(six) Blower overload at times not right away exhibited, so pay out attention to
the consumption and exhaust stress, bearing temperature and the recent enhance developments
of motor to decide whether the blower operates normally
(seven) Prior to disassembling the blower, the assembling relation and proportions
must be recorded or measured, make marks on factors to make certain the CZPT
requirements right after assembling.
(eight) When recently device or overhaul, the oil tank need to be cleaned ahead of use
and propose substitute all grease soon after eight hours operating.

Common failure cause and troubleshooting

No Failure Attainable causes Elimination approaches
one Friction
between the
(1) Impurities on the impeller,
resulting in the gap is way too small
(two) Gear use, ensuing in a
big backlash
(3) The equipment is not well set,
can not sustain the impeller
(four) Bearing use resulting in
clearance growing.
(one) Remove dust and verify
whether there is harm areas
(two) Adjust the equipment gap, substitute
the gears if the equipment backlash is
better than the average 30% to
(3)Re-assemble the gears, maintain
the taper get in touch with region is to seventy five%
(four)Change the bearing
2 Collision
impeller and
wall, the
impeller best
and casing
(one) Installation gap is not appropriate
(two) working pressure is way too
high, exceeding the specified
(3) Functioning temperature is too large
(four) Casing or base deformation,
positioning supporter failure
(5) Bearing axial area is not excellent
(one) Alter the hole
(2) Recognize brings about of
overloading, lowered the pressure
to the specified price
(three) Check the set up
precision and lessen the pipe
(four) Check out and fix bearings,
and to ensure the clearance
three Temperature
too higher
(1) Oil in tank is way too considerably, as well
thick or also soiled
(2) CZPT or silencer is blocked
(3)The stress is increased than
the specified value
(4)Abnormal wear of the
impeller, large gap
(five)Bad air flow, indoor
temperature is high, resulting in
inlet air’s substantial temperature
(six) The rotating pace is way too lower,result in the belt slipping.
(1)Minimize the oil level or count on
(2)Take away of blocking objects
(three)Reducing the stress through
the blower
(four)Repair its clearance
(5)Open up vents to lessen room
(6) Improve velocity to avert the
belt slipping.
four Insufficient
(1) The inlet filter is blocked
(two) Impeller wear and the hole
raises also significantly
(3) Belt slipping
(four) Huge imports pressure reduction
(five) CZPT air flow leakage
(one) Clear the filter dust and
(2) Mend the gap
(3)Tighten the belt and boost
the quantity of belts
(4)Adjust the inlet strain to the
specified price
(five) Check out and repair the pipeline
five Oil leaking or
oil leaking
into the enclosure
(one)Higher tank place result in
leakage from the discharge port
(two) Seal dress in, ensuing in shaft oil spills
(3) The pressure is higher than
the specified price

(1)Lessen the oil level
(two)Substitute the seals
(3)Clear the air vents, 2mm diameter faucet is mounted in the
middle chamber, open up the faucet
beneath the wall
6 Abnormal
vibration and
(one)Bearing clearance exceeds the
specified price or bearing put on
(2) The equipment backlash is as well
big, not in a limited mounted
(three) The foreign objects and dust
brought on by the impeller and the
impeller, the impeller and the
housing collision
(4) the impeller shaft
deformation induced the collision
induced by overload,
(five) Friction among the impeller
and the inlet housing triggered by
(6) Unbalance of the impeller
induced by fouling or foreign
entire body
(seven) CZPT bolts or other
fasteners are loosened
(one)Replace bearings or bearing
(2)Reassemble equipment and ensure
(three)Cleaning blower, check out the
circumstance is damaged
(4)Check the back again stress, verify
the wheel and modify gap
(five)Check the filter and back again
force, boost the hole
amongst the impeller inlet and the
(6)Cleanse the impeller and the
casing, to ensure that the impeller
clearance work
(7) Tighten the anchor bolts and
leveling the foundation.
seven Motor
(1)When compared with the needed
force, the pressure big difference
is huge that the back again stress or
the inlet force is substantial
(two) When compared with the
equipment needs, blower
stream is as well huge, so its strain
(3)Inlet filter is blocked, or outlet
pipe is obstructed or blocked
(four) Collusion or friction (caught)
rotating areas
(5) The oil amount is too substantial
(6) Narrow V-belt is overheat,
vibration is way too massive, or pulley
is way too tiny
(one) Decrease the stress to the
specified value
(two) Exhaust the excessive gasoline into
the atmosphere or minimize the
blower speed
(three) Take away the obstructions
(4)Quickly shut down, examine
the reason
(5) Adjust the oil to the appropriate
(six) Check out the belt tension, and
replaced it with massive diameter

Our Provider

one. Pre offer service                                                                              2. Soon after market service                                          
a. suggest the appropriate model                                             c. online technological assistance,                                                                                   
b. factory tour                                                                              d. whole existence spare parts and techinical assistance


12 months gurantee for our roots blowers

Two Stage High Pressure Roots Blower