High Efficiency Roots Vacuum Pump for Oxygen Transport

High Efficiency Roots Vacuum Pump for Oxygen Transport

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

Variety Diameter Fee of movement Pressure
ESR-MJ(Intensive Type) Φ50~Φ300mm .5~140m³/min 9.8KPa~98.8Kpa
ESR(Regular Variety) Φ50~Φ350mm .five~140m³/min nine.8KPa~seventy eight.4Kpa
ESR-H(Higher-force Sort) 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 Collection Φ200~Φ600mm 20.three~750m³/min nine.8KPa~fifty eight.8Kpa
Multistage Centrifugal Blower
or C-Series
Φ250~Φ500mm 50~500m³/min 9.8KPa~98Kpa
ERR-ERG Kind Φ250~Φ500mm 120~420m³/min 9.8KPa~98.8Kpa

The doing work theory of the 3-blade roots blower: two 3-lobed rotors are organized in the cavity, and the
suction port and the discharge port are opened on each sides of the cavity. By way 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 gas in the chamber is pushed to obtain the
objective of blowing.

Attribute of our roots blower:
1. Massive adjustment of the air quantity
2. Lower Sound
3. Substantial effectiveness
four. Reduced energy cosumption
five. Extended time life
six. Trustworthy working, straightforward routine maintenance,little footprint

The parameters of our roots blower:

Type Ratary Speed
Pressure Increase
Shaft Electricity
Motor Device Maximn
Excess weight(Kg)
ESR-fifty 1100-2120 nine.8-58.8 .sixty five-2.fifty eight .three-3.54 .75-four 128-158
ESR-65 1100-2130 nine.eight-58.8 .ninety four-three.sixty six .38-4.46 .seventy five-five.five 155-185
ESR-80 1140-1900 9.eight-fifty eight.8 two.34-five.forty three one.04-seven.forty two 2.2-11 a hundred and fifty five-277
ESR-a hundred 1060-1980 nine.8-58.8 four.57-nine.05 1.35-12.15 three-fifteen 309-377
ESR-125 980-1850 nine.8-fifty eight.eight five.35-twelve.4 1.sixty five-five.19 five.five-eighteen.5 408-451
ESR-125C 970-1830 nine.8-fifty eight.8 7.five-17.57 three.2-18.5 four-22 408-451
ESR-a hundred and fifty 810-1730 nine.8-fifty eight.8 ten.37-27.15 3.84-40.eighty two 7.5-forty five 688-848
ESR-one hundred seventy five 970-1520 nine.8-fifty eight.eight 19.sixty five-36.sixty five seven.2-forty five.ninety five 11-fifty five 980-1080
ESR-200B 740-1450 nine.8-fifty eight.eight 19.sixty five-forty four.8 10.15-sixty.forty four fifteen-seventy five 1272-1546
ESR-two hundred 810-1480 nine.8-fifty eight.eight 27.65-59.two 8.05-eighty,twelve fifteen-90 1272-1546
ESR-250B 1100-1480 nine.8-58.eight 54.77-seventy seven.55 19.ninety seven-ninety.97 thirty-a hundred and ten 1490-2454
ESR-250 990-1480 nine.eight-fifty eight.8 61.4-97.52 20.one-117.three 30-132 1490-2454
ESR-300 990-1480 nine.eight-fifty eight.8 87.1-138.one 26.four-167.8 37-185 3326-3446
ESR-350 730-1480 9.eight-58.8 78.forty one-177.31   fifty five-250  
ESR-50H 1230-2120 sixty three.seven-98 .forty five-2.02 2.05-6.twelve three-7.five one hundred sixty–170
ESR-65H 1240-2130 63.seven-98 .78-2.fifty three two.89-7.55 four-eleven 198-230
ESR-80H 1140-1900 63.7-98 1.eighty two-four.fifty five 4.09-ten.one 5.five-15 316-326
ESR-100H 1060-1980 sixty three.seven-ninety eight two.sixty five-eight.06 6.36-17.two seven.5-22 398-459
ESR-125H 980-1850 sixty three.7-ninety eight 4.64-eleven.23 eight.ninety two-24.two eleven-30 544-630
ESR-150H 810-1730 63.seven-ninety eight 9.fifty three-25.seventy six 17.sixteen-65 eighteen.five-75 752-1571
ESR-200H 810-1480 sixty three.seven-98 twenty five.34-56.92 forty two.34-a hundred and twenty fifty five-132 1426-1934
ESR-250H 990-1480 sixty three.7-98 58-ninety three.7 eighty three.2-205 ninety-220 2980-3468
ESR300H 990-1480 63.seven-98 86.9-134.1 114.seven-270 132-280 3476-3998
ERF-245 650-980 nine.8-ninety eight forty seven.five-ninety seven.4 16-183 eighteen.5-200 3630-3690
ERF-250 650-980 9.eight-ninety eight sixty one.six-120.4 19-227 22-250 4450-4500
ERF-290 650-980 nine.8-78.4 92.3-128 22-213 30-250 4890-4710
ERF-295 650-980 9.eight-seventy eight.four 97.3-152.5 23-227 thirty-250 4890-4880
ERF-297 650-980 nine.eight-seventy eight.4 87.5-167.6 26-249 30-280 5330-5520
ERF-300 650-980 9.8-seventy eight.4 a hundred and one.5-188.7 29-278 37-315 5330-5520
ERF-350 650-980 nine.eight-78.4 126-224.nine 34-249 45-280 5210-6470
ERG-300 590-730 9.8-98 128.three-196 38-362 forty five-400 9440-15710
ERG-350 590-730 nine.eight-98 159.3-231.6 forty three-420 55-450 9700-1571
ERG-four hundred 590-730 nine.8-83.three 203.1-290.nine fifty two-449 seventy five-five hundred 10090-11390
ERG-445 590-730 nine.8-seventy three.5 229.7-327.8 fifty eight-477 75-560 10600-12230
ERG-450 590-730 nine.eight-seventy three.five 262.four-366.two 64-496 75-560 10600-12230
ERG-five hundred 590-730 9.8-63.7 327.four-452.4 78-529 90-560 12790-14620
ERF-240-V 650-980 -nine.8- -49 38.1-78 thirteen-seventy six eighteen.five-ninety 3420-3285
ERF-245-V 650-980 -nine.eight- -forty nine 47.5-ninety seven.four sixteen-ninety five 22-one hundred 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- -49 72.six-a hundred and forty four 22-136 thirty-one hundred sixty 4415-4270
ERF-295-V 650-980 -9.8- -49 seventy six.6-152 23-one hundred forty five thirty-160 4425-4485
ERF-297-V 650-980 -nine.8- -49 eighty four.3-166.eight 26-one hundred sixty thirty-180 5000-4980
ERF-three hundred-V 650-980 -nine.eight- -forty nine 97-192 29-178 37-200 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 forty five-220 7800-9100
ERG-350V 590-730 -nine.eight- -forty nine 163-231 43-216 55-250 9500-9470
ERG-400V 590-730 -nine.8- -49 199-290 fifty two-269 seventy five-315 9900-10130
ERG-445V 590-730 -9.8- -forty nine 224.eight-326.9 fifty eight-303 75-355 9900-10130
ERG-450V 590-730 -nine.8- -forty nine 255-365 sixty four-335 75-four hundred 11230-11300
ERG-500V 590-730 -9.8- -forty nine 314-452 78-412 132-450 13630-13850
ERF-245W 650-980 -thirteen.3- -53.3 53.five-101 21.five-102 30-110 3630-3360
ERF-250W 650-980 -13.three- -53.3 sixty nine-127 26.5-127 30-a hundred and sixty 3985-4115
ERF-290W 650-980 -thirteen.three- -53.3 eighty two.6-150 30.5-149 37-185 4340-4580
ERF-295W 650-980 -thirteen.3- -fifty three.3 87-158 32-158 37-185 4440-4580
ERF-297W 650-980 -thirteen.3- -53.3 95-174 36-174 forty five-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 -13.3- -fifty three.3 129-230 50-230 75-250 5840-5670
ERG-300W 590-730 -13.3- -53.three 142-197 fifty two-201 seventy five-220 9100-9000
ERF-350W 590-730 -13.three- -53.three 168-234.four 59-235.five 75-280 9500-9600
ERG-400W 590-730 -13.three- -53.three 220-276.six seventy one-292 90-315 9900-10130
ERG-445W 590-730 -13.three- -fifty three.3 244-294.6 82-331 90-four hundred 11230-11300
ERG450W 590-730 -13.3- -fifty three.3 275-368.5 ninety one-366 a hundred and ten-four hundred 11230-11300
650-980 98-196 sixty four.eight-112 135-355 one hundred sixty-four hundred 8700-8600
650-980 98-196 eighty.eight-139 167-439 185-five hundred 9200-9100
ETRF-three hundred
650-980 98-176.4 102-174 206-497 250-560 10320-10500
650-980 ninety eight-137.2 124-207 241-473 280-560 10700-11110
ETRG-four hundred
(300,four hundred)
590-740 98-176.four 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 -53.3–eighty seventy two-121 75.6-121 ninety-a hundred and sixty 6100-6470
650-980 -53.three–eighty 93.8-154 99.five-186 one hundred ten-220 7000-6400
(2505/three hundred)
650-980 -53.three–80 116-189 115-220 132-250 7750-7760
EL81WD 580-980 9.eight-fifty eight.8 54.2-one hundred thirty eighteen-151 forty five-185 3595
EL82WDB 580-980 9.8-58.8 seventy two.8-161 22-191 45-220 3860
EL83WDA 580-980 9.eight-fifty eight.9 a hundred and one-213 28.five-202 45-220 4300
EL84WDA 580-980 9.8-58.eight 129-267 35.four-252 45-280 4720
EL93WDA 580-730 nine.eight-49 230-329 56.4-311 seventy five-355 7765
EL94WDA 580-730 9.8-49 263-373 sixty four-353 seventy five-four hundred 8130
EL95WDA 490-580 9.eight-58.8 308-434 81.four-414 90-450 11500
EL96WDA 580 58.eight 381 497 560 11500
E397WN one thousand-1650 forty 5-9      
E408WN 870-1650 40 ten-22      
E517WN 980-1580 40 20-30      
E520WN 930-1550 40 24-forty five      
E607WN 750-1250 forty forty five-76      
E610WN 750-1250 forty seventy five-a hundred thirty      

Spare areas and composition of our roots blower:

Deal of our Roots Blower

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

Roots blower pack method exact same as iron circumstance, just modify to Fumigation Totally free Plywood Situation

Our factory is a expert producer of Roots blowers which has more than twenty years’ experience in machinery
manufacturing. It is positioned in Xihu (West Lake) Dis. East CZPT Park, fifty kilometers to the east of ZheJiang provincial
capital— HangZhou. Our business also has handy site visitors transportation, as it is 15 kilometers away from
Diaozhen Town station of HangZhou-HangZhou expressway, and 30 kilometers absent from East HangZhou station of
ZheJiang -ZheJiang expressway.The foremost item of our company is ESR -kind Roots Blower. The roots
vacuum pump is a new sort of high-performance roots blower, which is created independently based on the
domestic and international superior systems. Numerous patented technologies have been adopted on Roots
Blower, and therefore we have made important consequences in power conservation and noise reduction, and many others.. So considerably, our
business has invested far more than 30,000,000 RMB to introduce these kinds of innovative specialist products as
horizontal machining heart, vertical machining heart, two-way CNC surface planer, CNC lathe, CNC milling
equipment, CNC planer, airplane grinder, cylindrical grinding device, and three coordinates tests device.
In addition to, we have taken various actions to CZPTize the procedure stream these kinds of as operating and cooperating
with numerous scientific research units, faculties and universities at house and overseas. We also continuously try out to
take in and enhance the domestic superior production technologies, so as to advertise the upgrading and
optimization of the solution and make the solution quality achieve the superior degree at residence and overseas.
ESR -sort Roots Blower contains numerous sequence this kind of as A few-leaves Kind, Two-leaves Variety and Centrifugal
Kind,which can be even more divided to hundreds of versions. The goods are broadly utilised in sewage remedy,
pneumatic conveying,vacuum packaging, aquaculture, foodstuff processing, electric powered electricity, petrochemical, cement,
mining and other industries. Our products have this kind of rewards as minimal sound, power preserving, steady quality,
and extended support daily life, and so on.. With the income outlets throughout the domestic funds towns, our merchandise promote nicely all
above the country, and have been exported to North The us,Russia, Malaysia, Indonesia, Vietnam, South Africa
and some other international locations. Having obtained the ISO9001 CZPT CZPT System Certification, we have
proven and improved the quality assurance of the items developing, manufacturing, and set up.
From the method of style, analysis and development to the finished products, we have got the complete
procedure managed independently, thus providing the entire foundation and reliability ensure for the items stability
and longevity. Possessing a perfect sales network and following-sales service, we provide our clients with higher-
good quality and far more efficient services.All personnel of our business sincerely welcome the wide masses of buddies to
guide, and negotiate company with us.

Our Roots Blower Workshop

         Doosn Horzitonal CZPT Middle

The Software of the Roots Blower

Servicing and inspection
(one) Verify all fasteners and finding pins conditions regardless of whether they are loosening.
(2) Often check out no matter whether the leakage phenomenon of the entire body.
(three) Spend attention to lubrication, volume of grease and noises when working,
determine no matter whether it performs below the required situations.
(4) CZPT & grease: The lubricant is for medium load industrial gear oil
(grade 220, kinematic viscosity of 198 ~ 242mm2 / s 40ºC, flash stage ≥ 200ºC)
The grease is butter (artificial lithium grease penetration 220-250, drop point ≥
190ºC). Change the lubricant and grease right after first 200 hours operating, and exchange
yet again following a moth working. Afterwards, change the lubricant and grease in accordance to the
atmosphere and lubricant (grease) top quality propose a ideal replacement for 3
(5) Usually check out the inlet air filter, thoroughly clean or substitute the filter in time.
(6) Blower overload occasionally not quickly shown, so pay attention to
the consumption and exhaust stress, bearing temperature and the current enhance traits
of motor to establish regardless of whether the blower operates normally
(seven) Prior to disassembling the blower, the assembling relation and dimensions
have to be recorded or measured, make marks on components to make certain the CZPT
requirements following assembling.
(8) When recently device or overhaul, the oil tank need to be cleaned prior to use
and suggest exchange all grease right after eight hours working.

Common failure explanation and troubleshooting

No Failure Achievable motives Elimination approaches
1 Friction
among the
(one) Impurities on the impeller,
resulting in the gap is as well modest
(two) Gear wear, resulting in a
massive backlash
(three) The gear is not effectively fixed,
can not sustain the impeller
(four) Bearing use resulting in
clearance growing.
(one) Remove dirt and examine
whether there is injury areas
(two) Adjust the gear gap, exchange
the gears if the equipment backlash is
better than the average 30% to
(three)Re-assemble the gears, keep
the taper contact region is to 75%
(four)Replace the bearing
two Collision
impeller and
wall, the
impeller prime
and casing
(one) Installation hole is not right
(two) running strain is way too
large, exceeding the specified
(3) Operating temperature is as well high
(4) Casing or base deformation,
positioning enthusiast failure
(5) Bearing axial area is not excellent
(one) Alter the hole
(2) Recognize leads to of
overloading, decreased the strain
to the specified price
(three) Examine the set up
accuracy and minimize the pipe
(four) Check out and restore bearings,
and to ensure the clearance
3 Temperature
as well higher
(1) Oil in tank is also significantly, also
thick or as well dirty
(two) CZPT or silencer is blocked
(3)The pressure is higher than
the specified value
(4)Extreme put on of the
impeller, large gap
(5)Very poor air flow, indoor
temperature is large, ensuing in
inlet air’s higher temperature
(6) The rotating velocity is as well low,outcome in the belt slipping.
(1)Minimize the oil degree or rely on
(two)Remove of blocking objects
(three)Minimizing the stress via
the blower
(four)Fix its clearance
(five)Open up vents to reduce place
(6) Boost pace to avert the
belt slipping.
4 Inadequate
(1) The inlet filter is blocked
(two) Impeller wear and the hole
raises as well much
(three) Belt slipping
(four) Large imports stress loss
(five) CZPT ventilation leakage
(1) Clear the filter dust and
(2) Restore the hole
(3)Tighten the belt and enhance
the amount of belts
(four)Alter the inlet force to the
specified benefit
(5) Check and mend the pipeline
five Oil leaking or
oil leaking
into the enclosure
(1)High tank position lead to
leakage from the discharge port
(two) Seal dress in, ensuing in shaft oil spills
(three) The stress is larger than
the specified benefit

(1)Decrease the oil level
(two)Replace the seals
(three)Obvious the air vents, 2mm diameter faucet is mounted in the
center chamber, open the faucet
below the wall
6 Abnormal
vibration and
(one)Bearing clearance exceeds the
specified price or bearing put on
(two) The equipment backlash is as well
massive, not in a tight set
(3) The overseas objects and dust
induced by the impeller and the
impeller, the impeller and the
housing collision
(four) the impeller shaft
deformation caused the collision
triggered by overload,
(five) Friction between the impeller
and the inlet housing induced by
(6) Unbalance of the impeller
triggered by fouling or foreign
human body
(7) CZPT bolts or other
fasteners are loosened
(one)Substitute bearings or bearing
(two)Reassemble gear and guarantee
(three)Cleaning blower, examine the
scenario is destroyed
(4)Examine the again stress, verify
the wheel and change hole
(5)Check out the filter and back again
stress, improve the gap
between the impeller inlet and the
(six)Cleanse the impeller and the
casing, to ensure that the impeller
clearance perform
(seven) Tighten the anchor bolts and
leveling the foundation.
seven Motor
(one)When compared with the needed
force, the force difference
is large that the back pressure or
the inlet strain is substantial
(two) In contrast with the
equipment demands, blower
stream is too large, so its pressure
will increase
(3)Inlet filter is blocked, or outlet
pipe is obstructed or blocked
(4) Collusion or friction (caught)
rotating elements
(5) The oil degree is way too large
(six) Narrow V-belt is overheat,
vibration is too big, or pulley
is as well little
(1) Lessen the force to the
specified worth
(two) Exhaust the extra gas into
the environment or decrease the
blower pace
(3) Eliminate the obstructions
(4)Immediately shut down, verify
the explanation
(five) Alter the oil to the proper
(six) Verify the belt tension, and
replaced it with huge diameter

Our Services

one. Pre market service                                                                              2. Following market service                                          
a. recommend the appropriate model                                             c. on the internet technical support,                                                                                   
b. manufacturing unit tour                                                                              d. whole existence spare components and techinical assistance


twelve months gurantee for our roots blowers

High Efficiency Roots Vacuum Pump for Oxygen Transport