Single Oil Case High Efficiency Roots Vacuum Pump

Single Oil Case High Efficiency Roots Vacuum Pump

We make all kinds of roots blower, centrifugal blower, Our Main goods are as below:

Variety Diameter Rate of flow Force
ESR-MJ(Intense Type) Φ50~Φ300mm .5~140m³/min nine.8KPa~98.8Kpa
ESR(Regular Sort) Φ50~Φ350mm .5~140m³/min nine.8KPa~seventy eight.4Kpa
ESR-H(Large-force Type) Φ50~Φ350mm .seven~160m³/min fifty eight.8KPa~ninety eight.8Kpa
ESR-V(Vacuum Pump) Φ50~Φ350mm .five~160m³/min nine.8KPa~53.3Kpa
EL Series Φ200~Φ600mm twenty.three~750m³/min nine.8KPa~58.8Kpa
Multistage Centrifugal Blower
or C-Sequence
Φ250~Φ500mm fifty~500m³/min 9.8KPa~98Kpa
ERR-ERG Kind Φ250~Φ500mm 120~420m³/min nine.8KPa~98.8Kpa

The functioning theory of the 3-blade roots blower: two three-lobed rotors are arranged in the cavity, and the
suction port and the discharge port are opened on both sides of the cavity. Through the motion of a pair of
synchronous gears, the two rotors rotate in opposite instructions 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 obtain the
function of blowing.

Function of our roots blower:
1. Huge adjustment of the air volume
two. Lower Sound
3. High efficiency
four. Minimal strength cosumption
5. Prolonged time existence
6. Dependable running, simple routine maintenance,tiny footprint

The parameters of our roots blower:

Sort Ratary Pace
Pressure Rise
Shaft Electrical power
Motor Unit Maximn
Excess weight(Kg)
Electrical power
ESR-50 1100-2120 9.8-fifty eight.8 .sixty five-2.58 .three-three.54 .seventy five-4 128-158
ESR-sixty five 1100-2130 9.eight-fifty eight.8 .ninety four-3.66 .38-four.forty six .seventy five-5.5 one hundred fifty five-185
ESR-eighty 1140-1900 nine.8-58.8 two.34-five.forty three 1.04-seven.42 2.2-eleven a hundred and fifty five-277
ESR-a hundred 1060-1980 9.8-58.8 four.fifty seven-9.05 1.35-twelve.fifteen 3-15 309-377
ESR-a hundred twenty five 980-1850 9.8-58.8 five.35-12.4 one.65-5.19 five.five-eighteen.5 408-451
ESR-125C 970-1830 9.eight-fifty eight.eight 7.five-17.fifty seven three.two-eighteen.five four-22 408-451
ESR-a hundred and fifty 810-1730 9.8-fifty eight.8 ten.37-27.fifteen three.84-forty.82 seven.five-45 688-848
ESR-175 970-1520 9.eight-58.eight 19.65-36.sixty five seven.2-forty five.95 11-fifty five 980-1080
ESR-200B 740-1450 9.eight-fifty eight.eight 19.65-44.eight 10.fifteen-60.44 fifteen-seventy five 1272-1546
ESR-two hundred 810-1480 9.eight-fifty eight.eight 27.sixty five-fifty nine.2 8.05-eighty,12 15-ninety 1272-1546
ESR-250B 1100-1480 nine.eight-fifty eight.8 fifty four.seventy seven-77.55 19.ninety seven-90.ninety seven thirty-a hundred and ten 1490-2454
ESR-250 990-1480 nine.eight-fifty eight.eight 61.four-ninety seven.52 20.1-117.3 30-132 1490-2454
ESR-300 990-1480 9.8-fifty eight.8 26.4-167.eight 37-185 3326-3446
ESR-350 730-1480 9.eight-58.8 78.forty one-177.31   55-250  
ESR-50H 1230-2120 sixty three.7-ninety eight .forty five-two.02 two.05-6.twelve three-seven.5 one hundred sixty–one hundred seventy
ESR-65H 1240-2130 sixty eight .78-2.fifty three two.89-seven.fifty five four-11 198-230
ESR-80H 1140-1900 63.7-98 one.eighty two-four.55 4.09-ten.1 5.five-15 316-326
ESR-100H 1060-1980 eight two.65-eight.06 6.36-seventeen.2 7.5-22 398-459
ESR-125H 980-1850 sixty 4.64-eleven.23 8.ninety two-24.two 11-30 544-630
ESR-150H 810-1730 63.7-98 9.fifty three-twenty five.76 17.16-65 18.5-seventy five 752-1571
ESR-200H 810-1480 63.7-98 twenty five.34-56.ninety two forty two.34-a hundred and twenty 55-132 1426-1934
ESR-250H 990-1480 58-ninety three.7 83.two-205 90-220 2980-3468
ESR300H 990-1480 63.7-98 86.9-134.1 114.7-270 132-280 3476-3998
ERF-245 650-980 nine.eight-98 47.5-ninety seven.four 16-183 eighteen.five-200 3630-3690
ERF-250 650-980 9.eight-ninety eight sixty one.six-one hundred twenty.four 19-227 22-250 4450-4500
ERF-290 650-980 9.eight-seventy eight.4 92.three-128 22-213 thirty-250 4890-4710
ERF-295 650-980 9.eight-78.four 97.three-152.5 23-227 30-250 4890-4880
ERF-297 650-980 nine.8-78.4 87.5-167.six 26-249 30-280 5330-5520
ERF-300 650-980 nine.eight-seventy eight.4 one zero one.5-188.7 29-278 37-315 5330-5520
ERF-350 650-980 9.eight-78.4 126-224.nine 34-249 forty five-280 5210-6470
ERG-300 590-730 nine.8-ninety eight 128.3-196 38-362 45-four hundred 9440-15710
ERG-350 590-730 9.eight-98 159.three-231.6 forty three-420 55-450 9700-1571
ERG-four hundred 590-730 9.8-eighty three.three 203.1-290.9 fifty two-449 seventy five-five hundred 10090-11390
ERG-445 590-730 9.8-73.5 229.7-327.8 fifty eight-477 seventy five-560 10600-12230
ERG-450 590-730 9.eight-seventy three.five 262.4-366.two 64-496 seventy five-560 10600-12230
ERG-five hundred 590-730 9.8-sixty 327.4-452.four seventy eight-529 90-560 12790-14620
ERF-240-V 650-980 -nine.eight- -49 38.1-seventy eight 13-76 eighteen.5-90 3420-3285
ERF-245-V 650-980 -9.8- -49 forty seven.5-ninety seven.four 16-ninety five 22-110 3425-3360
ERF-250-V 650-980 -nine.8- -49 sixty three-a hundred and twenty 19-117 22-132 3910-3830
ERF-290-V 650-980 -9.8- -forty nine seventy two.6-one hundred forty four 22-136 thirty-a hundred and sixty 4415-4270
ERF-295-V 650-980 -9.eight- -49 seventy six.six-152 23-a hundred forty five thirty-160 4425-4485
ERF-297-V 650-980 -9.eight- -49 84.3-166.eight 26-a hundred and sixty thirty-a hundred and eighty 5000-4980
ERF-300-V 650-980 -nine.8- -49 ninety seven-192 29-178 37-200 5000-4980
ERF-350-V 650-980 -nine.8- -49 116-225 34-209 45-250 5400-5700
ERG-300V 590-730 -nine.eight- -forty nine 133-193 38-184 forty five-220 7800-9100
ERG-350V 590-730 -nine.eight- -forty nine 163-231 forty three-216 fifty five-250 9500-9470
ERG-400V 590-730 -9.8- -49 199-290 52-269 75-315 9900-10130
ERG-445V 590-730 -nine.eight- -forty nine 224.8-326.9 58-303 seventy five-355 9900-10130
ERG-450V 590-730 -nine.eight- -forty nine 255-365 64-335 75-400 11230-11300
ERG-500V 590-730 -9.8- -49 314-452 seventy eight-412 132-450 13630-13850
ERF-245W 650-980 -13.three- -53.3 53.5-101 21.five-102 thirty-a hundred and ten 3630-3360
ERF-250W 650-980 -thirteen.three- -fifty three.3 sixty nine-127 26.five-127 30-160 3985-4115
ERF-290W 650-980 -thirteen.3- -53.3 82.6-a hundred and fifty thirty.five-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 -thirteen.3- -fifty three.three ninety five-174 36-174 45-200 5230-5130
ERF-300W 650-980 -thirteen.3- -fifty three.3 109-195 forty-193 fifty five-220 5230-5130
ERF-350W 650-980 -thirteen.three- -53.three 129-230 fifty-230 seventy five-250 5840-5670
ERG-300W 590-730 -13.3- -fifty three.three 142-197 fifty two-201 75-220 9100-9000
ERF-350W 590-730 -thirteen.three- -fifty three.three 168-234.4 59-235.5 75-280 9500-9600
ERG-400W 590-730 -thirteen.three- -fifty three.3 220-276.6 71-292 ninety-315 9900-10130
ERG-445W 590-730 -thirteen.three- -53.3 244-294.six 82-331 ninety-four hundred 11230-11300
ERG450W 590-730 -thirteen.3- -fifty three.three 275-368.5 91-366 one hundred ten-400 11230-11300
650-980 98-196 64.eight-112 one hundred thirty five-355 one hundred sixty-400 8700-8600
650-980 98-196 eighty.eight-139 167-439 185-five hundred 9200-9100
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
ETRG-four hundred
(three hundred,400)
590-740 ninety eight-176.4 205-273 380-773 450-900 21350-24200
590-740 98-176.four 263-428 476-955 560-1000 24200-27600
650-980 -53.3–eighty 72-121 75.six-121 ninety-one hundred sixty 6100-6470
650-980 -fifty three.three–eighty ninety three.eight-154 ninety nine.five-186 a hundred and ten-220 7000-6400
(2505/three hundred)
650-980 -53.3–eighty 116-189 one hundred fifteen-220 132-250 7750-7760
EL81WD 580-980 9.eight-fifty eight.8 54.two-one hundred thirty eighteen-151 forty five-185 3595
EL82WDB 580-980 nine.eight-58.8 72.eight-161 22-191 forty five-220 3860
EL83WDA 580-980 nine.eight-58.9 101-213 28.5-202 45-220 4300
EL84WDA 580-980 nine.8-58.8 129-267 35.4-252 45-280 4720
EL93WDA 580-730 9.8-49 230-329 fifty six.four-311 75-355 7765
EL94WDA 580-730 nine.eight-49 263-373 sixty four-353 seventy five-four hundred 8130
EL95WDA 490-580 9.8-58.8 308-434 eighty one.4-414 90-450 11500
EL96WDA 580 58.8 381 497 560 11500
E397WN one thousand-1650 40 five-nine      
E408WN 870-1650 forty 10-22      
E517WN 980-1580 40 20-30      
E520WN 930-1550 forty 24-45      
E607WN 750-1250 forty forty five-76      
E610WN 750-1250 40 75-130      

Spare areas and framework of our roots blower:

Deal of our Roots Blower

Pack into iron case, two layer,blower physique and motor in reduced layer, inlet/out silencer and many others in upper layer

Roots blower pack approach exact same as iron circumstance, just modify to Fumigation Free Plywood Circumstance

Our factory is a specialist producer of Roots blowers which has in excess of 20 years’ experience in equipment
production. It is positioned in Xihu (West Lake) Dis. East CZPT Park, 50 kilometers to the east of ZheJiang provincial
funds— HangZhou. Our organization also has hassle-free site visitors transportation, as it is 15 kilometers away from
Diaozhen Town station of HangZhou-HangZhou expressway, and 30 kilometers away from East HangZhou station of
ZheJiang -ZheJiang expressway.The major item of our business is ESR -type Roots Blower. The roots
vacuum pump is a new kind of large-efficiency roots blower, which is developed independently based on the
domestic and overseas innovative systems. Several patented technologies have been adopted on Roots
Blower, and as a result we have created substantial outcomes in strength conservation and noise reduction, and many others.. So far, our
firm has invested more than 30,000,000 RMB to introduce this kind of advanced specialist tools as
horizontal machining center, vertical machining center, two-way CNC surface area planer, CNC lathe, CNC milling
machine, CNC planer, airplane grinder, cylindrical grinding machine, and a few coordinates tests machine.
In addition to, we have taken a variety of measures to CZPTize the approach flow these kinds of as functioning and cooperating
with many scientific research units, schools and universities at residence and overseas. We also continually consider to
absorb and enhance the domestic superior creation systems, so as to promote the upgrading and
optimization of the product and make the item high quality reach the superior stage at house and overseas.
ESR -type Roots Blower involves several collection this sort of as Three-leaves Sort, Two-leaves Type and Centrifugal
Variety,which can be further divided to hundreds of kinds. The products are broadly used in sewage remedy,
pneumatic conveying,vacuum packaging, aquaculture, foodstuff processing, electric power, petrochemical, cement,
mining and other industries. Our goods have these kinds of rewards as reduced sound, power saving, stable top quality,
and extended support lifestyle, and many others.. With the revenue outlets throughout the domestic capital metropolitan areas, our merchandise market properly all
over the country, and have been exported to North The united states,Russia, Malaysia, Indonesia, Vietnam, South Africa
and some other international locations. Possessing obtained the ISO9001 CZPT CZPT Method Certification, we have
set up and enhanced the good quality assurance of the goods developing, manufacturing, and installation.
From the process of layout, analysis and development to the finished goods, we have got the complete
process managed independently, hence delivering the full foundation and reliability guarantee for the products balance
and durability. Getting a perfect sales network and soon after-product sales service, we provide our clients with increased-
good quality and more efficient service.All staff of our business sincerely welcome the broad masses of pals to
information, and negotiate organization with us.

Our Roots Blower Workshop

         Doosn Horzitonal CZPT Heart

The Software of the Roots Blower

Routine maintenance and inspection
(1) Verify all fasteners and locating pins circumstances whether they are loosening.
(two) Usually verify whether or not the leakage phenomenon of the entire body.
(three) Shell out focus to lubrication, volume of grease and noises when working,
determine whether or not it works below the needed circumstances.
(4) CZPT & grease: The lubricant is for medium load industrial equipment oil
(grade 220, kinematic viscosity of 198 ~ 242mm2 / s 40ºC, flash point ≥ 200ºC)
The grease is butter (synthetic lithium grease penetration 220-250, fall level ≥
190ºC). Exchange the lubricant and grease soon after first 200 hrs managing, and replace
once again right after a moth working. Later, replace the lubricant and grease in accordance to the
setting and lubricant (grease) quality suggest a suitable alternative for 3
(five) Always check out the inlet air filter, clean or change the filter in time.
(6) Blower overload often not quickly shown, so spend consideration to
the consumption and exhaust force, bearing temperature and the recent improve tendencies
of motor to figure out regardless of whether the blower operates generally
(seven) Prior to disassembling the blower, the assembling relation and proportions
should be recorded or calculated, make marks on elements to guarantee the CZPT
demands after assembling.
(eight) When newly machine or overhaul, the oil tank ought to be cleaned ahead of use
and propose substitute all grease after eight several hours working.

Frequent failure explanation and troubleshooting

No Failure Achievable causes Elimination techniques
one Friction
between the
(one) Impurities on the impeller,
ensuing in the hole is way too small
(2) Gear use, ensuing in a
massive backlash
(three) The equipment is not effectively mounted,
can not sustain the impeller
(4) Bearing put on ensuing in
clearance increasing.
(one) Remove grime and verify
whether or not there is injury areas
(two) Modify the gear gap, exchange
the gears if the gear backlash is
increased than the average thirty% to
(three)Re-assemble the gears, preserve
the taper contact region is to seventy five%
(four)Replace the bearing
two Collision
impeller and
wall, the
impeller best
and casing
(1) Set up hole is not right
(2) working stress is too
higher, exceeding the specified
(3) Functioning temperature is also large
(four) Casing or foundation deformation,
positioning enthusiast failure
(5) Bearing axial spot is not excellent
(1) Adjust the gap
(2) Identify leads to of
overloading, lowered the stress
to the specified worth
(3) Verify the set up
precision and minimize the pipe
(four) Examine and restore bearings,
and to ensure the clearance
3 Temperature
as well higher
(1) Oil in tank is as well a lot, too
thick or way too soiled
(2) CZPT or silencer is blocked
(three)The force is larger than
the specified worth
(4)Excessive wear of the
impeller, massive gap
(five)Inadequate ventilation, indoor
temperature is higher, resulting in
inlet air’s higher temperature
(6) The rotating pace is as well lower,result in the belt slipping.
(one)Reduce the oil amount or rely on
(2)Eliminate of blocking objects
(three)Decreasing the stress via
the blower
(4)Mend its clearance
(5)Open vents to minimize area
(6) Increase speed to stop the
belt slipping.
4 Insufficient
(1) The inlet filter is blocked
(2) Impeller put on and the gap
increases also considerably
(3) Belt slipping
(four) Massive imports pressure loss
(five) CZPT air flow leakage
(1) Clear the filter dust and
(2) Mend the hole
(3)Tighten the belt and improve
the amount of belts
(four)Alter the inlet stress to the
specified value
(five) Check and restore the pipeline
five Oil leaking or
oil leaking
into the enclosure
(1)Substantial tank position trigger
leakage from the discharge port
(2) Seal wear, resulting in shaft oil spills
(3) The force is greater than
the specified worth

(1)Lessen the oil amount
(2)Replace the seals
(three)Distinct the air vents, 2mm diameter faucet is fixed in the
middle chamber, open the faucet
underneath the wall
six Irregular
vibration and
(one)Bearing clearance exceeds the
specified price or bearing use
(two) The gear backlash is also
huge, not in a tight set
(three) The international objects and dust
triggered by the impeller and the
impeller, the impeller and the
housing collision
(four) the impeller shaft
deformation brought on the collision
brought on by overload,
(five) Friction amongst the impeller
and the inlet housing triggered by
(6) Unbalance of the impeller
triggered by fouling or overseas
(seven) CZPT bolts or other
fasteners are loosened
(one)Substitute bearings or bearing
(two)Reassemble equipment and guarantee
(three)Cleaning blower, verify the
scenario is broken
(four)Examine the again strain, examine
the wheel and change gap
(five)Check the filter and back
force, enhance the hole
in between the impeller inlet and the
(six)Clean the impeller and the
casing, to guarantee that the impeller
clearance perform
(7) Tighten the anchor bolts and
leveling the foundation.
seven Motor
(1)In contrast with the required
pressure, the stress difference
is large that the back again force or
the inlet stress is higher
(2) When compared with the
gear requirements, blower
flow is as well big, so its pressure
(3)Inlet filter is blocked, or outlet
pipe is obstructed or blocked
(four) Collusion or friction (caught)
rotating elements
(five) The oil amount is also substantial
(six) Slender V-belt is overheat,
vibration is way too big, or pulley
is as well little
(one) Decrease the force to the
specified value
(two) Exhaust the extra gasoline into
the atmosphere or decrease the
blower velocity
(3) Get rid of the obstructions
(4)Immediately shut down, verify
the purpose
(5) Adjust the oil to the proper
(6) Check the belt stress, and
changed it with massive diameter

Our Provider

one. Pre sell service                                                                              two. Right after sell service                                          
a. advocate the appropriate model                                             c. online complex help,                                                                                   
b. factory tour                                                                              d. whole life spare components and techinical help


12 months gurantee for our roots blowers

Single Oil Case High Efficiency Roots Vacuum Pump