Single Oil Case High Efficiency Roots Vacuum Pump

Single Oil Case High Efficiency Roots Vacuum Pump

We make all types of roots blower, centrifugal blower, Our Principal items are as under:

Kind Diameter Charge of movement Force
ESR-MJ(Intense Variety) Φ50~Φ300mm .5~140m³/min 9.8KPa~ninety eight.8Kpa
ESR(Ordinary Kind) Φ50~Φ350mm .5~140m³/min nine.8KPa~78.4Kpa
ESR-H(Substantial-force Type) Φ50~Φ350mm .7~160m³/min fifty eight.8KPa~ninety eight.8Kpa
ESR-V(Vacuum Pump) Φ50~Φ350mm .5~160m³/min nine.8KPa~fifty three.3Kpa
EL Sequence Φ200~Φ600mm 20.3~750m³/min nine.8KPa~58.8Kpa
Multistage Centrifugal Blower
or C-Collection
Φ250~Φ500mm fifty~500m³/min nine.8KPa~98Kpa
ERR-ERG Variety Φ250~Φ500mm one hundred twenty~420m³/min nine.8KPa~98.8Kpa

The doing work principle of the 3-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. Through the motion 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 gasoline in the chamber is pushed to attain the
purpose of blowing.

Feature of our roots blower:
1. Huge adjustment of the air quantity
two. Lower Noise
3. High effectiveness
4. Low vitality cosumption
5. Long time daily life
6. Reputable working, straightforward upkeep,little footprint

The parameters of our roots blower:

Sort Ratary Pace
Pressure Rise
Shaft Electricity
Motor Device Maximn
Electrical power
ESR-50 1100-2120 9.eight-58.8 .65-two.fifty eight .three-three.54 .seventy five-four 128-158
ESR-sixty five 1100-2130 nine.eight-58.8 .ninety four-3.66 .38-four.46 .75-five.5 a hundred and fifty five-185
ESR-80 1140-1900 nine.eight-58.eight 2.34-five.forty three 1.04-7.forty two two.2-eleven one hundred fifty five-277
ESR-100 1060-1980 9.eight-58.8 four.57-nine.05 one.35-12.15 3-15 309-377
ESR-a hundred twenty five 980-1850 nine.eight-fifty eight.eight five.35-twelve.four one.65-five.19 5.5-eighteen.5 408-451
ESR-125C 970-1830 nine.eight-fifty eight.eight seven.five-seventeen.fifty seven 3.two-18.five four-22 408-451
ESR-a hundred and fifty 810-1730 nine.eight-58.eight 10.37-27.fifteen three.eighty four-forty.eighty two 7.5-forty five 688-848
ESR-one hundred seventy five 970-1520 9.8-fifty eight.8 19.65-36.sixty five seven.two-forty five.95 eleven-55 980-1080
ESR-200B 740-1450 nine.8-58.8 19.sixty five-forty four.eight ten.fifteen-60.forty four 15-seventy five 1272-1546
ESR-two hundred 810-1480 nine.eight-fifty eight.eight 27.65-fifty nine.2 eight.05-80,twelve fifteen-90 1272-1546
ESR-250B 1100-1480 9.eight-58.8 54.seventy seven-77.55 19.97-90.97 thirty-a hundred and ten 1490-2454
ESR-250 990-1480 9.8-fifty eight.8 sixty one.4-97.fifty two thirty-132 1490-2454
ESR-three hundred 990-1480 nine.8-58.8 26.four-167.eight 37-185 3326-3446
ESR-350 730-1480 9.8-fifty eight.eight seventy eight.41-177.31   55-250  
ESR-50H 1230-2120 sixty three.7-ninety eight .45-2.02 2.05-6.twelve 3-7.5 160–170
ESR-65H 1240-2130 sixty three.7-ninety eight .78-2.53 two.89-7.fifty five four-eleven 198-230
ESR-80H 1140-1900 63.7-ninety eight 1.eighty two-4.55 five.5-15 316-326
ESR-100H 1060-1980 2.sixty five-8.06 six.36-seventeen.two 7.5-22 398-459
ESR-125H 980-1850 sixty three.7-98 four.sixty four-eleven.23 eight.92-24.two eleven-30 544-630
ESR-150H 810-1730 sixty three.7-98 9.53-twenty five.76 seventeen.sixteen-65 eighteen.5-seventy five 752-1571
ESR-200H 810-1480 eight twenty five.34-fifty six.ninety two 42.34-a hundred and twenty fifty five-132 1426-1934
ESR-250H 990-1480 fifty eighty three.2-205 90-220 2980-3468
ESR300H 990-1480 114.7-270 132-280 3476-3998
ERF-245 650-980 9.eight-ninety eight forty seven.5-97.4 16-183 eighteen.5-two hundred 3630-3690
ERF-250 650-980 9.8-ninety eight sixty one.six-a hundred and twenty.four 19-227 22-250 4450-4500
ERF-290 650-980 9.eight-78.4 92.three-128 22-213 30-250 4890-4710
ERF-295 650-980 9.8-seventy eight.4 ninety seven.three-152.5 23-227 thirty-250 4890-4880
ERF-297 650-980 nine.8-seventy eight.4 87.5-167.six 26-249 thirty-280 5330-5520
ERF-three hundred 650-980 nine.8-78.four a hundred and one.five-188.7 29-278 37-315 5330-5520
ERF-350 650-980 9.8-seventy eight.four 126-224.nine 34-249 45-280 5210-6470
ERG-300 590-730 nine.8-98 128.three-196 38-362 forty five-400 9440-15710
ERG-350 590-730 9.eight-ninety eight 159.three-231.six 43-420 55-450 9700-1571
ERG-four hundred 590-730 nine.eight-83.three 203.1-290.9 fifty two-449 seventy five-five hundred 10090-11390
ERG-445 590-730 9.8-73.five 229.7-327.8 fifty eight-477 seventy five-560 10600-12230
ERG-450 590-730 nine.eight-73.5 262.four-366.2 sixty four-496 seventy five-560 10600-12230
ERG-500 590-730 9.eight-sixty 327.4-452.4 78-529 ninety-560 12790-14620
ERF-240-V 650-980 -nine.8- -49 38.1-seventy eight 13-76 18.five-ninety 3420-3285
ERF-245-V 650-980 -9.eight- -forty nine forty seven.5-ninety seven.four sixteen-ninety five 22-a hundred and ten 3425-3360
ERF-250-V 650-980 -nine.eight- -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-a hundred and forty four 22-136 30-one hundred sixty 4415-4270
ERF-295-V 650-980 -9.8- -forty nine seventy six.six-152 23-one hundred forty five 30-160 4425-4485
ERF-297-V 650-980 -9.8- -forty nine 84.three-166.8 26-160 thirty-a hundred and eighty 5000-4980
ERF-three hundred-V 650-980 -9.eight- -forty nine ninety seven-192 29-178 37-two hundred 5000-4980
ERF-350-V 650-980 -nine.8- -forty nine 116-225 34-209 45-250 5400-5700
ERG-300V 590-730 -nine.eight- -49 133-193 38-184 forty five-220 7800-9100
ERG-350V 590-730 -nine.eight- -49 163-231 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 -9.eight- -forty nine 224.eight-326.nine fifty eight-303 seventy five-355 9900-10130
ERG-450V 590-730 -nine.eight- -49 255-365 64-335 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.three- -53.3 53.5-a hundred and one 21.five-102 thirty-a hundred and ten 3630-3360
ERF-250W 650-980 -thirteen.3- -fifty three.three sixty nine-127 26.five-127 30-a hundred and sixty 3985-4115
ERF-290W 650-980 -13.3- -fifty three.3 82.6-a hundred and fifty 30.five-149 37-185 4340-4580
ERF-295W 650-980 -13.3- -53.three 87-158 32-158 37-185 4440-4580
ERF-297W 650-980 -thirteen.3- -fifty three.3 ninety five-174 36-174 45-two hundred 5230-5130
ERF-300W 650-980 -thirteen.three- -fifty three.3 109-195 40-193 fifty five-220 5230-5130
ERF-350W 650-980 -13.3- -53.three 129-230 50-230 seventy five-250 5840-5670
ERG-300W 590-730 -13.3- -fifty three.three 142-197 fifty two-201 seventy five-220 9100-9000
ERF-350W 590-730 -13.three- -fifty three.3 168-234.4 fifty nine-235.5 75-280 9500-9600
ERG-400W 590-730 -thirteen.three- -53.3 220-276.6 seventy one-292 ninety-315 9900-10130
ERG-445W 590-730 -13.3- -fifty three.three 244-294.6 82-331 ninety-400 11230-11300
ERG450W 590-730 -13.three- -fifty three.three 275-368.5 ninety one-366 a hundred and ten-400 11230-11300
650-980 ninety eight-196 sixty four.eight-112 one hundred thirty five-355 a hundred and sixty-400 8700-8600
650-980 ninety eight-196 eighty.8-139 167-439 185-500 9200-9100
ETRF-three hundred
650-980 ninety eight-176.4 102-174 206-497 250-560 10320-10500
650-980 98-137.2 124-207 241-473 280-560 10700-11110
(300,four hundred)
590-740 98-176.four 205-273 380-773 450-900 21350-24200
590-740 98-176.4 263-428 476-955 560-one thousand 24200-27600
650-980 -53.3–80 72-121 seventy five.6-121 ninety-one hundred sixty 6100-6470
650-980 -53.three–eighty ninety three.8-154 99.five-186 one hundred ten-220 7000-6400
650-980 -fifty three.three–80 116-189 a hundred and fifteen-220 132-250 7750-7760
EL81WD 580-980 nine.8-58.eight 54.2-130 eighteen-151 forty five-185 3595
EL82WDB 580-980 nine.eight-fifty eight.8 72.8-161 22-191 45-220 3860
EL83WDA 580-980 9.8-fifty eight.nine one hundred and one-213 28.5-202 45-220 4300
EL84WDA 580-980 9.eight-fifty eight.8 129-267 35.4-252 45-280 4720
EL93WDA 580-730 nine.eight-forty nine 230-329 fifty six.four-311 75-355 7765
EL94WDA 580-730 9.8-forty nine 263-373 64-353 75-four hundred 8130
EL95WDA 490-580 nine.eight-fifty eight.eight 308-434 eighty one.4-414 ninety-450 11500
EL96WDA 580 58.eight 381 497 560 11500
E397WN 1000-1650 forty 5-nine      
E408WN 870-1650 forty ten-22      
E517WN 980-1580 40 20-thirty      
E520WN 930-1550 forty 24-45      
E607WN 750-1250 forty forty five-seventy six      
E610WN 750-1250 forty 75-130      

Spare components and structure of our roots blower:

Deal of our Roots Blower

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

Roots blower pack method exact same as iron situation, just alter to Fumigation Totally free Plywood Circumstance

Our factory is a professional maker of Roots blowers which has over twenty years’ experience in machinery
production. It is positioned in Xihu (West Lake) Dis. East CZPT Park, 50 kilometers to the east of ZheCZPT provincial
cash— HangCZPT. Our business also has convenient site visitors transportation, as it is fifteen kilometers away from
Diaozhen City station of HangCZPT-HangCZPT expressway, and thirty kilometers absent from East HangCZPT station of
ZheCZPT -ZheCZPT expressway.The top solution of our company is ESR -type Roots Blower. The roots
vacuum pump is a new type of higher-effectiveness roots blower, which is developed independently dependent on the
domestic and international innovative systems. A number of patented technologies have been adopted on Roots
Blower, and therefore we have produced important consequences in energy conservation and noise reduction, and many others.. So significantly, our
company has invested a lot more than thirty,000,000 RMB to introduce such sophisticated expert products as
horizontal machining middle, vertical machining middle, two-way CNC surface area planer, CNC lathe, CNC milling
device, CNC planer, airplane grinder, cylindrical grinding device, and a few coordinates tests device.
Besides, we have taken numerous actions to standardize the process circulation this kind of as functioning and cooperating
with numerous scientific research units, faculties and universities at residence and abroad. We also repeatedly try to
absorb and increase the domestic innovative production technologies, so as to advertise the upgrading and
optimization of the item and make the solution good quality achieve the innovative level at residence and abroad.
ESR -sort Roots Blower contains several series this sort of as 3-leaves Sort, Two-leaves Type and Centrifugal
Variety,which can be further divided to hundreds of kinds. The products are broadly employed in sewage treatment,
pneumatic conveying,vacuum packaging, aquaculture, foodstuff processing, electric power, petrochemical, cement,
mining and other industries. Our merchandise have this kind of advantages as lower noise, vitality preserving, stable top quality,
and extended services daily life, and so forth.. With the revenue outlets throughout the domestic funds towns, our items offer well all
over the place, and have been exported to North America,Russia, Malaysia, Indonesia, Vietnam, South Africa
and some other international locations. Having received the ISO9001 CZPT High quality Technique Certification, we have
recognized and improved the good quality assurance of the goods creating, manufacturing, and installation.
From the procedure of design, analysis and growth to the completed merchandise, we have got the complete
approach managed independently, thus supplying the entire foundation and trustworthiness promise for the merchandise steadiness
and toughness. Getting a perfect revenue network and soon after-product sales provider, we offer our buyers with larger-
top quality and much more efficient service.All personnel of our firm sincerely welcome the wide masses of pals to
manual, and negotiate company with us.

Our Roots Blower Workshop

         Doosn Horzitonal Machine Heart

The Software of the Roots Blower

Upkeep and inspection
(1) Verify all fasteners and finding pins situations whether or not they are loosening.
(2) Often check out regardless of whether the leakage phenomenon of the physique.
(3) Pay out focus to lubrication, sum of grease and noises when operating,
figure out whether it works underneath the necessary conditions.
(four) Lubricant & grease: The lubricant is for medium load industrial gear oil
(grade 220, kinematic viscosity of 198 ~ 242mm2 / s 40ºC, flash position ≥ 200ºC)
The grease is butter (artificial lithium grease penetration 220-250, fall stage ≥
190ºC). Substitute the lubricant and grease after initial two hundred several hours operating, and change
once again following a moth managing. Later on, exchange the lubricant and grease according to the
environment and lubricant (grease) top quality suggest a suited replacement for 3
(5) Usually check the inlet air filter, thoroughly clean or replace the filter in time.
(6) Blower overload at times not instantly exhibited, so shell out attention to
the ingestion and exhaust pressure, bearing temperature and the current enhance trends
of motor to determine regardless of whether the blower functions usually
(7) Ahead of disassembling the blower, the assembling relation and dimensions
should be recorded or calculated, make marks on elements to make sure the CZPT
requirements following assembling.
(eight) When freshly equipment or overhaul, the oil tank ought to be cleaned ahead of use
and suggest change all grease following eight hrs managing.

Frequent failure cause and troubleshooting

No Failure Attainable reasons Elimination techniques
1 Friction
in between the
(one) Impurities on the impeller,
ensuing in the gap is too tiny
(2) Gear dress in, ensuing in a
huge backlash
(three) The gear is not properly set,
can not preserve the impeller
(four) Bearing use ensuing in
clearance rising.
(one) Take away grime and examine
regardless of whether there is damage elements
(2) Modify the equipment gap, substitute
the gears if the equipment backlash is
better than the common 30% to
(3)Re-assemble the gears, hold
the taper make contact with area is to seventy five%
(four)Replace the bearing
two Collision
in between
impeller and
wall, the
impeller best
and casing
(one) Installation hole is not correct
(2) working force is also
substantial, exceeding the specified
(three) Running temperature is as well high
(4) Casing or foundation deformation,
positioning supporter failure
(5) Bearing axial area is not great
(1) Alter the hole
(two) Discover leads to of
overloading, lowered the pressure
to the specified price
(3) Check out the set up
accuracy and minimize the pipe
(4) Examine and fix bearings,
and to make sure the clearance
3 Temperature
also large
(one) Oil in tank is as well a lot, as well
thick or too filthy
(two) CZPT or silencer is blocked
(three)The force is increased than
the specified value
(four)Abnormal wear of the
impeller, massive gap
(five)Poor air flow, indoor
temperature is substantial, ensuing in
inlet air’s substantial temperature
(6) The rotating pace is too lower,consequence in the belt slipping.
(1)Decrease the oil level or count on
(2)Take away of blocking objects
(3)Reducing the stress through
the blower
(four)Fix its clearance
(5)Open up vents to lessen area
(six) Improve speed to prevent the
belt slipping.
four Insufficient
(1) The inlet filter is blocked
(2) Impeller put on and the hole
increases way too significantly
(3) Belt slipping
(four) Huge imports force decline
(5) Pipeline air flow leakage
(one) Cleanse the filter dust and
(2) Mend the hole
(3)Tighten the belt and improve
the number of belts
(4)Alter the inlet pressure to the
specified worth
(5) Verify and repair the pipeline
5 Oil leaking or
oil leaking
into the enclosure
(one)Substantial tank position trigger
leakage from the discharge port
(2) Seal dress in, resulting in shaft oil spills
(three) The force is larger than
the specified benefit

(one)Decrease the oil amount
(two)Exchange the seals
(three)Clear the air vents, 2mm diameter faucet is set in the
center chamber, open up the faucet
below the wall
six Abnormal
vibration and
(1)Bearing clearance exceeds the
specified value or bearing dress in
(2) The equipment backlash is as well
large, not in a tight fixed
(3) The overseas objects and dust
brought on by the impeller and the
impeller, the impeller and the
housing collision
(four) the impeller shaft
deformation induced the collision
caused by overload,
(5) Friction among the impeller
and the inlet housing induced by
(six) Unbalance of the impeller
brought on by fouling or overseas
entire body
(seven) Anchor bolts or other
fasteners are loosened
(1)Substitute bearings or bearing
(two)Reassemble equipment and guarantee
(three)Cleansing blower, check the
scenario is destroyed
(4)Check the back again strain, examine
the wheel and modify gap
(five)Check the filter and again
pressure, enhance the hole
between the impeller inlet and the
(6)Cleanse the impeller and the
casing, to make certain that the impeller
clearance function
(seven) Tighten the anchor bolts and
leveling the base.
seven Motor
(one)In contrast with the essential
pressure, the strain big difference
is huge that the again strain or
the inlet stress is substantial
(2) Compared with the
equipment requirements, blower
movement is too large, so its pressure
(three)Inlet filter is blocked, or outlet
pipe is obstructed or blocked
(4) Collusion or friction (stuck)
rotating areas
(5) The oil amount is too higher
(six) Narrow V-belt is overheat,
vibration is also huge, or pulley
is also modest
(1) Minimize the force to the
specified benefit
(two) Exhaust the excessive fuel into
the ambiance or lessen the
blower velocity
(three) Get rid of the obstructions
(four)Right away shut down, check out
the reason
(five) Alter the oil to the proper
(six) Check out the belt stress, and
replaced it with huge diameter

Our Services

one. Pre offer service                                                                              two. Following market service                                          
a. advise the ideal model                                             c. on-line specialized assistance,                                                                                   
b. manufacturing unit tour                                                                              d. total existence CZPT and techinical support


12 months gurantee for our roots blowers

Single Oil Case High Efficiency Roots Vacuum Pump