Two Stage High Pressure Roots Blower

Two Stage High Pressure Roots Blower

We make all kinds of roots blower, centrifugal blower, Our Principal goods are as underneath:

Sort Diameter Charge of stream Pressure
ESR-MJ(Intensive Sort) Φ50~Φ300mm .5~140m³/min 9.8KPa~ninety eight.8Kpa
ESR(Ordinary Sort) Φ50~Φ350mm .5~140m³/min 9.8KPa~seventy eight.4Kpa
ESR-H(Higher-force Sort) Φ50~Φ350mm .seven~160m³/min 58.8KPa~ninety eight.8Kpa
ESR-V(Vacuum Pump) Φ50~Φ350mm .5~160m³/min 9.8KPa~53.3Kpa
EL Series Φ200~Φ600mm twenty.three~750m³/min nine.8KPa~fifty eight.8Kpa
Multistage Centrifugal Blower
or C-Collection
Φ250~Φ500mm 50~500m³/min 9.8KPa~98Kpa
ERR-ERG Variety Φ250~Φ500mm 120~420m³/min nine.8KPa~ninety eight.8Kpa

The working principle of the 3-blade roots blower: two a few-lobed rotors are arranged in the cavity, and the
suction port and the discharge port are opened on each sides of the cavity. By way of 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 fuel in the chamber is pushed to achieve the
function of blowing.

Attribute of our roots blower:
1. Huge adjustment of the air volume
2. Minimal Noise
3. Large effectiveness
four. Minimal power cosumption
5. Prolonged time daily life
six. Trustworthy running, straightforward upkeep,little footprint

The parameters of our roots blower:

Type Ratary Velocity
Force Increase
Shaft Electricity
Motor Unit Maximn
Electrical power
ESR-50 1100-2120 nine.eight-fifty eight.8 .sixty five-two.58 .three-three.fifty four .seventy five-4 128-158
ESR-65 1100-2130 nine.8-58.8 .94-3.66 .38-four.46 .75-5.five one hundred fifty five-185
ESR-eighty 1140-1900 9.8-fifty eight.eight 2.34-5.43 1.04-seven.forty two 2.2-11 one hundred fifty five-277
ESR-a hundred 1060-1980 nine.eight-58.8 4.fifty seven-nine.05 one.35-twelve.fifteen 3-15 309-377
ESR-125 980-1850 nine.8-fifty eight.eight five.35-twelve.four one.sixty five-five.19 5.five-18.5 408-451
ESR-125C 970-1830 9.8-58.8 seven.5-seventeen.57 3.two-eighteen.5 four-22 408-451
ESR-150 810-1730 nine.8-58.8 ten.37-27.15 three.84-forty.eighty two 7.five-45 688-848
ESR-175 970-1520 9.eight-fifty eight.eight 19.65-36.65 7.two-45.95 eleven-55 980-1080
ESR-200B 740-1450 nine.8-58.8 19.65-forty four.8 10.15-60.44 fifteen-seventy five 1272-1546
ESR-200 810-1480 nine.eight-58.8 27.sixty five-59.2 eight.05-80,twelve fifteen-ninety 1272-1546
ESR-250B 1100-1480 9.8-58.eight 54.seventy seven-77.fifty five 19.ninety seven-90.97 30-one hundred ten 1490-2454
ESR-250 990-1480 nine.8-58.eight 61.4-97.fifty two thirty-132 1490-2454
ESR-300 990-1480 9.8-58.eight 26.four-167.eight 37-185 3326-3446
ESR-350 730-1480 nine.8-58.8 seventy eight.41-177.31   55-250  
ESR-50H 1230-2120 .45-two.02 2.05-6.12 3-seven.five one hundred sixty–170
ESR-65H 1240-2130 sixty three.7-ninety eight .seventy eight-2.53 two.89-7.fifty five four-eleven 198-230
ESR-80H 1140-1900 one.eighty two-4.fifty five 5.5-fifteen 316-326
ESR-100H 1060-1980 sixty three.7-ninety eight two.65-8.06 6.36-seventeen.two 7.five-22 398-459
ESR-125H 980-1850 63.7-98 4.64-11.23 8.92-24.two eleven-thirty 544-630
ESR-150H 810-1730 sixty three.7-ninety eight 9.fifty three-twenty five.seventy six 17.sixteen-sixty five eighteen.5-75 752-1571
ESR-200H 810-1480 sixty 25.34-fifty six.92 42.34-a hundred and twenty 55-132 1426-1934
ESR-250H 990-1480 sixty three.7-98 58-ninety three.7 83.two-205 ninety-220 2980-3468
ESR300H 990-1480 eight 132-280 3476-3998
ERF-245 650-980 nine.eight-ninety eight forty seven.five-ninety seven.4 sixteen-183 eighteen.five-two hundred 3630-3690
ERF-250 650-980 9.8-98 61.six-120.four 19-227 22-250 4450-4500
ERF-290 650-980 9.8-78.4 ninety two.three-128 22-213 thirty-250 4890-4710
ERF-295 650-980 9.eight-78.4 ninety seven.3-152.five 23-227 thirty-250 4890-4880
ERF-297 650-980 9.eight-78.4 87.5-167.six 26-249 30-280 5330-5520
ERF-300 650-980 9.eight-seventy eight.4 one zero one.5-188.7 29-278 37-315 5330-5520
ERF-350 650-980 nine.8-seventy eight.four 126-224.nine 34-249 forty five-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 nine.eight-98 159.3-231.6 43-420 fifty five-450 9700-1571
ERG-four hundred 590-730 9.eight-83.3 52-449 75-500 10090-11390
ERG-445 590-730 9.eight-73.5 fifty eight-477 75-560 10600-12230
ERG-450 590-730 9.8-73.5 262.four-366.two 64-496 75-560 10600-12230
ERG-500 590-730 nine.8-sixty three.7 327.4-452.4 78-529 ninety-560 12790-14620
ERF-240-V 650-980 -nine.8- -49 13-76 eighteen.five-90 3420-3285
ERF-245-V 650-980 -9.eight- -49 47.5-ninety seven.4 16-95 22-a hundred and ten 3425-3360
ERF-250-V 650-980 -9.eight- -forty nine sixty three-one hundred twenty 19-117 22-132 3910-3830
ERF-290-V 650-980 -nine.eight- -49 seventy two.6-144 22-136 30-one hundred sixty 4415-4270
ERF-295-V 650-980 -nine.eight- -49 76.6-152 23-a hundred forty five thirty-one hundred sixty 4425-4485
ERF-297-V 650-980 -nine.8- -49 84.three-166.eight 26-160 thirty-one hundred eighty 5000-4980
ERF-300-V 650-980 -nine.eight- -49 97-192 29-178 37-two hundred 5000-4980
ERF-350-V 650-980 -nine.8- -49 116-225 34-209 45-250 5400-5700
ERG-300V 590-730 -nine.eight- -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.8- -forty nine 199-290 52-269 75-315 9900-10130
ERG-445V 590-730 -nine.8- -49 224.8-326.9 fifty eight-303 75-355 9900-10130
ERG-450V 590-730 -9.8- -forty nine 255-365 64-335 seventy five-400 11230-11300
ERG-500V 590-730 -nine.eight- -forty nine 314-452 seventy eight-412 132-450 13630-13850
ERF-245W 650-980 -13.3- -fifty three.three fifty three.5-101 21.five-102 30-one hundred ten 3630-3360
ERF-250W 650-980 -13.three- -53.three sixty nine-127 26.five-127 30-160 3985-4115
ERF-290W 650-980 -13.3- -fifty three.three eighty two.six-one hundred fifty thirty.5-149 37-185 4340-4580
ERF-295W 650-980 -13.three- -53.three 87-158 32-158 37-185 4440-4580
ERF-297W 650-980 -thirteen.three- -fifty three.three 95-174 36-174 45-200 5230-5130
ERF-300W 650-980 -thirteen.3- -53.three 109-195 40-193 55-220 5230-5130
ERF-350W 650-980 -13.three- -fifty three.3 129-230 fifty-230 75-250 5840-5670
ERG-300W 590-730 -13.three- -fifty three.three 142-197 fifty two-201 seventy five-220 9100-9000
ERF-350W 590-730 -13.3- -53.three 168-234.four 59-235.5 seventy five-280 9500-9600
ERG-400W 590-730 -13.three- -fifty three.three 220-276.6 71-292 90-315 9900-10130
ERG-445W 590-730 -13.three- -fifty three.three 244-294.six eighty two-331 ninety-400 11230-11300
ERG450W 590-730 -thirteen.three- -fifty three.3 275-368.5 ninety one-366 110-400 11230-11300
650-980 ninety eight-196 64.eight-112 135-355 one hundred sixty-four hundred 8700-8600
650-980 ninety eight-196 80.8-139 167-439 185-500 9200-9100
650-980 98-176.4 102-174 206-497 250-560 10320-10500
650-980 98-137.2 124-207 241-473 280-560 10700-11110
(three hundred,four hundred)
590-740 ninety eight-176.4 205-273 380-773 450-900 21350-24200
590-740 ninety eight-176.four 263-428 476-955 560-a thousand 24200-27600
650-980 -53.three–80 72-121 seventy five.six-121 ninety-a hundred and sixty 6100-6470
650-980 -fifty three.three–80 ninety three.8-154 ninety nine.five-186 110-220 7000-6400
650-980 -53.three–eighty 116-189 a hundred and fifteen-220 132-250 7750-7760
EL81WD 580-980 9.8-58.8 fifty four.two-a hundred thirty eighteen-151 forty five-185 3595
EL82WDB 580-980 nine.8-fifty eight.eight seventy two.eight-161 22-191 forty five-220 3860
EL83WDA 580-980 nine.8-58.9 101-213 28.5-202 45-220 4300
EL84WDA 580-980 nine.8-fifty eight.eight 129-267 35.four-252 45-280 4720
EL93WDA 580-730 nine.8-forty nine 230-329 56.4-311 seventy five-355 7765
EL94WDA 580-730 9.8-49 263-373 64-353 75-400 8130
EL95WDA 490-580 nine.8-58.8 308-434 eighty one.4-414 ninety-450 11500
EL96WDA 580 58.8 381 497 560 11500
E397WN one thousand-1650 40 five-9      
E408WN 870-1650 40 10-22      
E517WN 980-1580 forty 20-thirty      
E520WN 930-1550 forty 24-forty five      
E607WN 750-1250 40 45-76      
E610WN 750-1250 forty 75-a hundred thirty      

Spare areas and composition of our roots blower:

Bundle of our Roots Blower

Pack into iron situation, two layer,blower physique and motor in reduce layer, inlet/out silencer etc in higher layer

Roots blower pack approach same as iron scenario, just modify to Fumigation Totally free Plywood Situation

Our manufacturing facility is a professional producer of Roots blowers which has over twenty years’ experience in equipment
manufacturing. It is located in Xihu (West Lake) Dis. CZPT CZPT Park, 50 kilometers to the east of ZheJiang provincial
funds— HangZhou. Our firm also has hassle-free site visitors transportation, as it is fifteen kilometers away from
Diaozhen Town station of HangZhou-HangZhou expressway, and thirty kilometers away from CZPT HangZhou station of
ZheJiang -ZheJiang expressway.The leading product of our firm is ESR -variety Roots Blower. The roots
vacuum pump is a new sort of large-performance roots blower, which is developed independently based on the
domestic and foreign superior technologies. Numerous patented technologies have been adopted on Roots
Blower, and as a result we have produced substantial results in power conservation and noise reduction, and so forth.. So considerably, our
company has invested much more than thirty,000,000 RMB to introduce this kind of sophisticated specialist products as
horizontal machining middle, vertical machining centre, two-way CNC surface area planer, CNC lathe, CNC milling
device, CNC planer, aircraft grinder, cylindrical grinding machine, and a few coordinates tests machine.
Aside from, we have taken different steps to CZPTize the method movement these kinds of as operating and cooperating
with many scientific research units, schools and universities at residence and abroad. We also repeatedly try out to
take up and increase the domestic superior generation systems, so as to promote the upgrading and
optimization of the merchandise and make the solution high quality get to the innovative amount at residence and abroad.
ESR -kind Roots Blower involves numerous sequence this sort of as A few-leaves Type, Two-leaves Type and Centrifugal
Sort,which can be more divided to hundreds of versions. The goods are commonly utilized in sewage therapy,
pneumatic conveying,vacuum packaging, aquaculture, foodstuff processing, electric electricity, petrochemical, cement,
mining and other industries. Our products have this kind of benefits as low sounds, energy preserving, stable quality,
and long support daily life, and so on.. With the revenue outlets throughout the domestic funds towns, our products offer well all
above the place, and have been exported to North CZPTica,Russia, Malaysia, Indonesia, Vietnam, South Africa
and some other nations. Getting acquired the ISO9001 CZPT CZPT Method Certification, we have
set up and improved the top quality assurance of the products planning, producing, and installation.
From the procedure of design and style, study and development to the completed products, we have received the complete
approach controlled independently, therefore delivering the complete foundation and dependability promise for the merchandise stability
and toughness. Possessing a perfect income community and soon after-revenue provider, we supply our buyers with greater-
high quality and much more successful service.All staff of our organization sincerely welcome the wide masses of buddies to
guidebook, and negotiate organization with us.

Our Roots Blower Workshop

         Doosn Horzitonal CZPT Center

The Software of the Roots Blower

Servicing and inspection
(1) Check all fasteners and locating pins problems no matter whether they are loosening.
(two) Constantly examine no matter whether the leakage phenomenon of the body.
(3) Pay focus to lubrication, volume of grease and noises when operating,
determine regardless of whether it functions beneath the necessary conditions.
(four) CZPT & grease: The lubricant is for medium load industrial equipment oil
(quality 220, kinematic viscosity of 198 ~ 242mm2 / s 40ºC, flash position ≥ 200ºC)
The grease is butter (artificial lithium grease penetration 220-250, fall stage ≥
190ºC). Replace the lubricant and grease right after first two hundred hours operating, and exchange
once more soon after a moth running. Later, replace the lubricant and grease in accordance to the
surroundings and lubricant (grease) top quality propose a suited substitute for a few
(five) Usually check out the inlet air filter, cleanse or exchange the filter in time.
(six) Blower overload at times not quickly shown, so shell out interest to
the ingestion and exhaust force, bearing temperature and the present enhance trends
of motor to figure out whether or not the blower works generally
(seven) Just before disassembling the blower, the assembling relation and proportions
must be recorded or measured, make marks on elements to make certain the CZPT
requirements right after assembling.
(8) When freshly equipment or overhaul, the oil tank must be cleaned before use
and propose replace all grease after eight hours operating.

Widespread failure explanation and troubleshooting

No Failure Feasible reasons Elimination strategies
1 Friction
amongst the
(1) Impurities on the impeller,
resulting in the gap is also small
(2) Equipment dress in, ensuing in a
big backlash
(3) The gear is not effectively fastened,
can not sustain the impeller
(four) Bearing wear resulting in
clearance rising.
(one) Remove filth and check out
regardless of whether there is injury elements
(2) Change the equipment gap, substitute
the gears if the gear backlash is
increased than the regular 30% to
(3)Re-assemble the gears, maintain
the taper make contact with spot is to seventy five%
(four)Exchange the bearing
2 Collision
in between
impeller and
wall, the
impeller leading
and casing
(1) Installation hole is not correct
(2) working pressure is also
substantial, exceeding the specified
(3) Running temperature is also high
(four) Casing or foundation deformation,
positioning fan failure
(5) Bearing axial area is not very good
(one) Adjust the hole
(2) Discover triggers of
overloading, decreased the pressure
to the specified benefit
(3) Verify the set up
accuracy and minimize the pipe
(four) Verify and restore bearings,
and to make certain the clearance
3 Temperature
way too substantial
(1) Oil in tank is also a lot, way too
thick or too soiled
(two) CZPT or silencer is blocked
(3)The strain is larger than
the specified benefit
(four)Too much wear of the
impeller, big hole
(five)Inadequate air flow, indoor
temperature is substantial, ensuing in
inlet air’s large temperature
(six) The rotating speed is too minimal,result in the belt slipping.
(one)Lessen the oil stage or count on
(2)Eliminate of blocking objects
(three)Reducing the pressure via
the blower
(4)Repair its clearance
(5)Open up vents to decrease room
(six) Increase speed to avert the
belt slipping.
4 Insufficient
(1) The inlet filter is blocked
(2) Impeller wear and the gap
will increase way too a lot
(three) Belt slipping
(four) Massive imports pressure decline
(5) CZPT air flow leakage
(1) Clean the filter dust and
(two) Restore the gap
(three)Tighten the belt and enhance
the variety of belts
(4)Modify the inlet stress to the
specified price
(5) Verify and restore the pipeline
five Oil leaking or
oil leaking
into the enclosure
(one)Substantial tank position result in
leakage from the discharge port
(2) Seal dress in, resulting in shaft oil spills
(three) The pressure is larger than
the specified benefit

(1)Lessen the oil stage
(2)Change the seals
(three)Clear the air vents, 2mm diameter faucet is fixed in the
middle chamber, open the faucet
underneath the wall
six Abnormal
vibration and
(one)Bearing clearance exceeds the
specified worth or bearing put on
(2) The equipment backlash is way too
large, not in a limited fastened
(three) The foreign 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
caused by fouling or foreign
human body
(seven) CZPT bolts or other
fasteners are loosened
(one)Change bearings or bearing
(2)Reassemble equipment and ensure
(3)Cleaning blower, check the
case is ruined
(four)Check the back stress, check
the wheel and change hole
(5)Examine the filter and back again
pressure, increase the hole
amongst the impeller inlet and the
(6)Clean the impeller and the
casing, to guarantee that the impeller
clearance work
(seven) Tighten the anchor bolts and
leveling the foundation.
seven Motor
(one)In contrast with the essential
force, the stress difference
is big that the back force or
the inlet pressure is high
(2) In comparison with the
products needs, blower
flow is way too massive, so its pressure
(3)Inlet filter is blocked, or outlet
pipe is obstructed or blocked
(four) Collusion or friction (trapped)
rotating parts
(5) The oil stage is as well higher
(six) Slim V-belt is overheat,
vibration is way too big, or pulley
is too modest
(one) Lessen the strain to the
specified benefit
(two) Exhaust the extra fuel into
the ambiance or minimize the
blower speed
(3) Take away the obstructions
(four)Instantly shut down, check out
the explanation
(5) Alter the oil to the proper
(6) Examine the belt stress, and
replaced it with massive diameter

Our Support

1. Pre offer service                                                                              2. Right after promote service                                          
a. advocate the appropriate model                                             c. on the internet specialized assistance,                                                                                   
b. manufacturing unit tour                                                                              d. complete existence spare components and techinical assistance


12 months gurantee for our roots blowers

Two Stage High Pressure Roots Blower


Vacuum Pump

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