Double Oil Case Water Cooling High Efficiency Roots Vacuum Pump

We make all sorts of roots blower, centrifugal blower, Our Principal goods are as below:

Kind Diameter Fee of movement Force
ESR-MJ(Intensive Variety) Φ50~Φ300mm .five~140m³/min nine.8KPa~ninety eight.8Kpa
ESR(Common Sort) Φ50~Φ350mm .5~140m³/min 9.8KPa~seventy eight.4Kpa
ESR-H(High-force Variety) Φ50~Φ350mm .seven~160m³/min fifty eight.8KPa~ninety eight.8Kpa
ESR-V(Vacuum Pump) Φ50~Φ350mm .5~160m³/min nine.8KPa~53.3Kpa
EL Collection Φ200~Φ600mm twenty.3~750m³/min 9.8KPa~58.8Kpa
Multistage Centrifugal Blower
or C-Series
Φ250~Φ500mm 50~500m³/min 9.8KPa~98Kpa
ERR-ERG Kind Φ250~Φ500mm a hundred and twenty~420m³/min nine.8KPa~ninety eight.8Kpa

The operating basic 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 equally sides of the cavity. Via the motion of a pair of
synchronous gears, the two rotors rotate in opposite directions 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 achieve the
function of blowing.

Attribute of our roots blower:
one. Massive adjustment of the air volume
two. Lower Sound
three. Higher effectiveness
4. Low energy cosumption
five. Long time lifestyle
six. Trustworthy managing, simple upkeep,little footprint

The parameters of our roots blower:

Kind Ratary Pace
Strain Rise
Shaft Energy
Motor Unit Maximn
ESR-fifty 1100-2120 nine.8-fifty eight.eight .sixty five-2.58 .three-three.fifty four .75-4 128-158
ESR-sixty five 1100-2130 nine.eight-58.8 .94-3.66 .38-four.46 .seventy five-five.five a hundred and fifty five-185
ESR-eighty 1140-1900 9.eight-58.eight 2.34-five.forty three one.04-7.42 2.2-11 one hundred fifty five-277
ESR-100 1060-1980 9.eight-58.8 four.57-nine.05 1.35-twelve.15 three-fifteen 309-377
ESR-a hundred twenty five 980-1850 9.eight-fifty eight.eight 5.35-twelve.4 one.65-five.19 5.5-eighteen.five 408-451
ESR-125C 970-1830 nine.8-58.eight 7.5-seventeen.57 three.two-eighteen.five four-22 408-451
ESR-150 810-1730 nine.8-fifty eight.8 10.37-27.15 three.84-40.82 7.5-45 688-848
ESR-a hundred seventy five 970-1520 nine.eight-58.eight 19.sixty five-36.65 seven.two-45.95 11-55 980-1080
ESR-200B 740-1450 9.8-58.8 19.sixty five-forty four.eight 10.15-60.44 fifteen-seventy five 1272-1546
ESR-200 810-1480 9.eight-fifty eight.eight 27.sixty five-fifty nine.two 8.05-eighty,twelve fifteen-ninety 1272-1546
ESR-250B 1100-1480 9.eight-58.eight fifty four.77-77.fifty five 19.97-90.97 thirty-one hundred ten 1490-2454
ESR-250 990-1480 nine.eight-fifty eight.8 61.4-ninety seven.fifty two thirty-132 1490-2454
ESR-three hundred 990-1480 9.8-58.eight 87.1-138.1 26.4-167.8 37-185 3326-3446
ESR-350 730-1480 9.eight-fifty eight.8 seventy eight.forty one-177.31   fifty five-250  
ESR-50H 1230-2120 eight .45-2.02 two.05-six.twelve three-7.five a hundred and sixty--a hundred and seventy
ESR-65H 1240-2130 sixty .78-2.53 two.89-seven.fifty five 4-eleven 198-230
ESR-80H 1140-1900 sixty three.7-ninety eight 1.eighty two-4.55 five.five-fifteen 316-326
ESR-100H 1060-1980 eight 2.sixty five-eight.06 six.36-seventeen.two 7.5-22 398-459
ESR-125H 980-1850 63.7-ninety eight four.64-eleven.23 eight.ninety two-24.two eleven-30 544-630
ESR-150H 810-1730 nine.53-twenty five.76 17.sixteen-sixty five 18.5-75 752-1571
ESR-200H 810-1480 sixty eight twenty five.34-fifty six.92 forty two.34-120 55-132 1426-1934
ESR-250H 990-1480 63.7-98 58-ninety three.7 eighty three.two-205 90-220 2980-3468
ESR300H 990-1480 86.9-134.1 114.7-270 132-280 3476-3998
ERF-245 650-980 9.eight-98 forty seven.five-97.4 16-183 18.5-200 3630-3690
ERF-250 650-980 9.eight-98 61.6-one hundred twenty.4 19-227 22-250 4450-4500
ERF-290 650-980 9.eight-seventy eight.4 ninety two.3-128 22-213 30-250 4890-4710
ERF-295 650-980 nine.eight-seventy eight.four 97.three-152.5 23-227 30-250 4890-4880
ERF-297 650-980 9.eight-seventy eight.4 87.5-167.6 26-249 thirty-280 5330-5520
ERF-three hundred 650-980 nine.eight-seventy eight.four a hundred and 29-278 37-315 5330-5520
ERF-350 650-980 9.eight-seventy eight.four 126-224.nine 34-249 45-280 5210-6470
ERG-300 590-730 9.8-ninety eight 128.three-196 38-362 forty five-400 9440-15710
ERG-350 590-730 9.8-98 159.three-231.6 43-420 fifty five-450 9700-1571
ERG-four hundred 590-730 nine.8-83.three 52-449 seventy five-500 10090-11390
ERG-445 590-730 nine.eight-seventy three.5 229.7-327.eight 58-477 75-560 10600-12230
ERG-450 590-730 nine.8-73.five 262.four-366.2 sixty four-496 seventy five-560 10600-12230
ERG-five hundred 590-730 nine.8-sixty 327.four-452.4 seventy eight-529 90-560 12790-14620
ERF-240-V 650-980 -nine.eight- -49 38.1-78 thirteen-76 18.five-90 3420-3285
ERF-245-V 650-980 -nine.8- -forty nine 47.five-97.4 sixteen-95 22-a hundred and ten 3425-3360
ERF-250-V 650-980 -nine.8- -forty nine 63-a hundred and twenty 19-117 22-132 3910-3830
ERF-290-V 650-980 -9.8- -forty nine seventy two.six-one hundred forty four 22-136 thirty-one hundred sixty 4415-4270
ERF-295-V 650-980 -9.8- -49 76.six-152 23-145 thirty-one hundred sixty 4425-4485
ERF-297-V 650-980 -9.8- -49 84.3-166.eight 26-160 thirty-180 5000-4980
ERF-300-V 650-980 -nine.eight- -forty nine ninety seven-192 29-178 37-two hundred 5000-4980
ERF-350-V 650-980 -nine.eight- -49 116-225 34-209 forty five-250 5400-5700
ERG-300V 590-730 -9.eight- -49 133-193 38-184 45-220 7800-9100
ERG-350V 590-730 -9.eight- -forty nine 163-231 forty three-216 55-250 9500-9470
ERG-400V 590-730 -9.eight- -forty nine 199-290 52-269 75-315 9900-10130
ERG-445V 590-730 -nine.eight- -49 224.8-326.nine 58-303 seventy five-355 9900-10130
ERG-450V 590-730 -nine.eight- -49 255-365 sixty four-335 seventy five-400 11230-11300
ERG-500V 590-730 -9.8- -49 314-452 78-412 132-450 13630-13850
ERF-245W 650-980 -thirteen.three- -fifty three.three 53.5-one zero one 21.5-102 thirty-one hundred ten 3630-3360
ERF-250W 650-980 -thirteen.three- -53.3 sixty nine-127 26.5-127 30-160 3985-4115
ERF-290W 650-980 -thirteen.three- -53.three 82.six-a hundred and fifty 30.5-149 37-185 4340-4580
ERF-295W 650-980 -thirteen.3- -fifty three.three 87-158 32-158 37-185 4440-4580
ERF-297W 650-980 -thirteen.three- -53.three 95-174 36-174 45-200 5230-5130
ERF-300W 650-980 -thirteen.3- -53.3 109-195 forty-193 55-220 5230-5130
ERF-350W 650-980 -thirteen.three- -fifty three.three 129-230 fifty-230 75-250 5840-5670
ERG-300W 590-730 -thirteen.3- -53.3 142-197 fifty two-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 -13.three- -fifty three.three 220-276.six seventy one-292 90-315 9900-10130
ERG-445W 590-730 -thirteen.3- -53.three 244-294.six 82-331 ninety-four hundred 11230-11300
ERG450W 590-730 -13.three- -53.three 275-368.five ninety one-366 one hundred ten-four hundred 11230-11300
650-980 98-196 64.eight-112 135-355 a hundred and sixty-400 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 98-137.2 124-207 241-473 280-560 10700-11110
(300,four hundred)
590-740 98-176.4 205-273 380-773 450-900 21350-24200
590-740 ninety eight-176.four 263-428 476-955 560-one thousand 24200-27600
650-980 -53.3--80 seventy two-121 75.six-121 ninety-one hundred sixty 6100-6470
650-980 -53.three--eighty 93.8-154 99.five-186 110-220 7000-6400
650-980 -53.3--80 116-189 a hundred and fifteen-220 132-250 7750-7760
EL81WD 580-980 9.eight-fifty eight.eight 54.2-a hundred thirty 18-151 45-185 3595
EL82WDB 580-980 9.eight-fifty eight.8 72.eight-161 22-191 forty five-220 3860
EL83WDA 580-980 nine.8-58.nine a hundred and one-213 28.5-202 forty five-220 4300
EL84WDA 580-980 9.eight-58.eight 129-267 35.four-252 45-280 4720
EL93WDA 580-730 9.eight-49 230-329 56.four-311 seventy five-355 7765
EL94WDA 580-730 nine.8-forty nine 263-373 64-353 seventy five-400 8130
EL95WDA 490-580 9.eight-fifty eight.8 308-434 81.four-414 ninety-450 11500
EL96WDA 580 fifty eight.8 381 497 560 11500
E397WN a thousand-1650 40 5-nine      
E408WN 870-1650 40 10-22      
E517WN 980-1580 forty twenty-thirty      
E520WN 930-1550 forty 24-45      
E607WN 750-1250 40 45-seventy six      
E610WN 750-1250 forty 75-130      

Spare areas and framework of our roots blower:

Package deal of our Roots Blower

Pack into iron situation, two layer,blower human body and motor in reduce layer, inlet/out silencer and so on in higher layer

Roots blower pack approach identical as iron scenario, just modify to Fumigation Free of charge Plywood Case

Our manufacturing facility is a professional maker of Roots blowers which has more than 20 years' experience in equipment
producing. It is positioned in Xihu (West Lake) Dis. East CZPT Park, 50 kilometers to the east of ZheJiang provincial
capital--- HangZhou. Our company also has hassle-free visitors transportation, as it is fifteen kilometers away from
Diaozhen Town station of HangZhou-HangZhou expressway, and thirty kilometers absent from East HangZhou station of
ZheJiang -ZheJiang expressway.The leading item of our organization is ESR -type Roots Blower. The roots
vacuum pump is a new type of higher-effectiveness roots blower, which is created independently primarily based on the
domestic and overseas superior systems. Several patented technologies have been adopted on Roots
Blower, and thus we have created important effects in strength conservation and noise reduction, and many others.. So significantly, our
organization has invested more than 30,000,000 RMB to introduce this sort of innovative expert tools as
horizontal machining center, vertical machining center, two-way CNC surface area planer, CNC lathe, CNC milling
machine, CNC planer, plane grinder, cylindrical grinding machine, and three coordinates testing equipment.
In addition to, we have taken numerous steps to CZPTize the method movement this sort of as working and cooperating
with numerous scientific research units, schools and universities at home and abroad. We also continuously consider to
take in and improve the domestic innovative creation systems, so as to promote the upgrading and
optimization of the solution and make the solution top quality reach the sophisticated level at property and overseas.
ESR -sort Roots Blower includes numerous sequence these kinds of as 3-leaves Type, Two-leaves Variety and Centrifugal
Sort,which can be more divided to hundreds of kinds. The goods are extensively employed in sewage treatment,
pneumatic conveying,vacuum packaging, aquaculture, foodstuff processing, electric electricity, petrochemical, cement,
mining and other industries. Our goods have these kinds of rewards as lower sound, power conserving, secure good quality,
and prolonged support lifestyle, and many others.. With the income outlets throughout the domestic funds towns, our products promote nicely all
over the region, and have been exported to North The united states,Russia, Malaysia, Indonesia, Vietnam, South Africa
and some other nations around the world. Possessing received the ISO9001 CZPT CZPT Method Certification, we have
set up and enhanced the good quality assurance of the products planning, production, and installation.
From the approach of design and style, research and improvement to the finished merchandise, we have obtained the whole
approach controlled independently, hence offering the complete foundation and reliability assure for the items security
and longevity. Obtaining a perfect income network and soon after-revenue support, we give our buyers with higher-
top quality and far more productive services.All personnel of our business sincerely welcome the wide masses of buddies to
manual, and negotiate organization with us.

Our Roots Blower Workshop

         Doosn Horzitonal CZPT Centre

The Software of the Roots Blower

Maintenance and inspection
(one) Verify all fasteners and locating pins situations whether they are loosening.
(two) Usually check out whether the leakage phenomenon of the physique.
(3) Shell out consideration to lubrication, quantity of grease and noises when managing,
establish whether or not it works underneath the essential problems.
(four) CZPT & grease: The lubricant is for medium load industrial equipment oil
(quality 220, kinematic viscosity of 198 ~ 242mm2 / s 40ºC, flash level ≥ 200ºC)
The grease is butter (synthetic lithium grease penetration 220-250, drop level ≥
190ºC). Replace the lubricant and grease after initial two hundred hrs managing, and exchange
again soon after a moth operating. Afterwards, substitute the lubricant and grease in accordance to the
atmosphere and lubricant (grease) top quality propose a ideal substitution for a few
(5) Usually verify the inlet air filter, thoroughly clean or replace the filter in time.
(six) Blower overload often not right away displayed, so shell out interest to
the intake and exhaust pressure, bearing temperature and the recent increase developments
of motor to figure out whether the blower functions usually
(seven) Before disassembling the blower, the assembling relation and proportions
need to be recorded or measured, make marks on factors to make sure the CZPT
requirements right after assembling.
(8) When recently machine or overhaul, the oil tank need to be cleaned prior to use
and suggest change all grease soon after eight several hours operating.

Widespread failure purpose and troubleshooting

No Failure Achievable reasons Elimination strategies
one Friction
in between the
(one) Impurities on the impeller,
resulting in the gap is too little
(two) Gear use, ensuing in a
big backlash
(3) The gear is not nicely fastened,
can not maintain the impeller
(four) Bearing dress in resulting in
clearance rising.
(one) Eliminate filth and verify
whether there is harm areas
(2) Modify the gear gap, substitute
the gears if the gear backlash is
higher than the typical 30% to
(3)Re-assemble the gears, hold
the taper speak to spot is to seventy five%
(4)Exchange the bearing
2 Collision
in between
impeller and
wall, the
impeller leading
and casing
(1) Set up hole is not appropriate
(two) functioning strain is as well
high, exceeding the specified
(3) Working temperature is too higher
(four) Casing or foundation deformation,
positioning enthusiast failure
(five) Bearing axial location is not good
(1) Alter the gap
(two) Discover leads to of
overloading, reduced the strain
to the specified worth
(3) Examine the installation
precision and minimize the pipe
(4) Verify and fix bearings,
and to guarantee the clearance
3 Temperature
as well substantial
(one) Oil in tank is as well a lot, also
thick or way too soiled
(two) CZPT or silencer is blocked
(three)The pressure is larger than
the specified price
(four)Excessive use of the
impeller, huge gap
(5)Very poor air flow, indoor
temperature is large, resulting in
inlet air's high temperature
(6) The rotating speed is as well minimal,end result in the belt slipping.
(1)Lessen the oil degree or rely on
(two)Take away of blocking objects
(3)Lowering the stress by means of
the blower
(4)Fix its clearance
(five)Open vents to lessen space
(six) Increase pace to avoid the
belt slipping.
four Insufficient
(one) The inlet filter is blocked
(two) Impeller wear and the gap
increases as well much
(3) Belt slipping
(4) Huge imports pressure reduction
(5) CZPT air flow leakage
(one) Clear the filter dust and
(two) Restore the hole
(3)Tighten the belt and enhance
the number of belts
(4)Adjust the inlet strain to the
specified worth
(5) Check out and restore the pipeline
five Oil leaking or
oil leaking
into the enclosure
(1)Substantial tank place lead to
leakage from the discharge port
(two) Seal dress in, resulting in shaft oil spills
(3) The force is increased than
the specified price

(one)Decrease the oil level
(2)Change the seals
(three)Obvious the air vents, 2mm diameter faucet is set in the
middle chamber, open the faucet
beneath the wall
6 Irregular
vibration and
(one)Bearing clearance exceeds the
specified price or bearing dress in
(2) The gear backlash is way too
massive, not in a tight fixed
(three) The foreign objects and dust
caused by the impeller and the
impeller, the impeller and the
housing collision
(four) the impeller shaft
deformation brought on the collision
caused by overload,
(5) Friction in between the impeller
and the inlet housing caused by
(six) Unbalance of the impeller
caused by fouling or overseas
(7) CZPT bolts or other
fasteners are loosened
(one)Exchange bearings or bearing
(2)Reassemble gear and make certain
(3)Cleansing blower, examine the
scenario is broken
(4)Check out the again force, examine
the wheel and change gap
(5)Check the filter and back
pressure, improve the hole
amongst the impeller inlet and the
(6)Thoroughly clean the impeller and the
casing, to make certain that the impeller
clearance work
(7) Tighten the anchor bolts and
leveling the base.
7 Motor
(one)When compared with the needed
pressure, the pressure big difference
is big that the back again pressure or
the inlet strain is high
(2) When compared with the
products specifications, blower
flow is also big, so its strain
(three)Inlet filter is blocked, or outlet
pipe is obstructed or blocked
(4) Collusion or friction (stuck)
rotating elements
(5) The oil degree is too high
(6) Slim V-belt is overheat,
vibration is as well large, or pulley
is as well modest
(one) Reduce the pressure to the
specified value
(two) Exhaust the extra fuel into
the environment or lessen the
blower speed
(3) Get rid of the obstructions
(4)Right away shut down, check out
the cause
(5) Alter the oil to the correct
(six) Check the belt rigidity, and
replaced it with huge diameter

Our Service

one. Pre promote service                                                                              2. After promote service                                          
a. advise the suitable model                                             c. on the internet technological assistance,                                                                                   
b. manufacturing unit tour                                                                              d. total life spare elements and techinical support


12 months gurantee for our roots blowers

Double Oil Case Water Cooling High Efficiency Roots Vacuum Pump