Two Stage High Pressure Roots Blower

Two Stage High Pressure Roots Blower

We make all kinds of roots blower, centrifugal blower, Our Primary products are as below:

Variety Diameter Price of movement Stress
ESR-MJ(Intensive Variety) Φ50~Φ300mm .5~140m³/min 9.8KPa~98.8Kpa
ESR(Normal Kind) Φ50~Φ350mm .5~140m³/min nine.8KPa~78.4Kpa
ESR-H(High-force Sort) Φ50~Φ350mm .7~160m³/min fifty eight.8KPa~98.8Kpa
ESR-V(Vacuum Pump) Φ50~Φ350mm .five~160m³/min 9.8KPa~fifty three.3Kpa
EL Sequence Φ200~Φ600mm twenty.3~750m³/min nine.8KPa~fifty eight.8Kpa
Multistage Centrifugal Blower
or C-Series
Φ250~Φ500mm fifty~500m³/min 9.8KPa~98Kpa
ERR-ERG Kind Φ250~Φ500mm a hundred and twenty~420m³/min 9.8KPa~98.8Kpa

The doing work principle of the three-blade roots blower: two 3-lobed rotors are organized in the cavity, and the
suction port and the discharge port are opened on both sides of the cavity. Through 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 accomplish the
objective of blowing.

Characteristic of our roots blower:
1. Large adjustment of the air volume
2. Lower Sounds
3. High effectiveness
four. Low energy cosumption
5. Prolonged time daily life
6. Reputable running, straightforward maintenance,little footprint

The parameters of our roots blower:

Sort Ratary Velocity
Pressure Increase
Shaft Power
Motor Unit Maximn
ESR-fifty 1100-2120 9.eight-58.eight .sixty five-2.58 .three-three.54 .75-four 128-158
ESR-sixty five 1100-2130 nine.8-58.eight .ninety four-three.66 .38-4.forty six .75-5.5 one hundred fifty five-185
ESR-eighty 1140-1900 9.eight-58.eight 2.34-5.43 1.04-7.forty two two.two-eleven 155-277
ESR-one hundred 1060-1980 nine.8-58.8 4.57-9.05 one.35-12.fifteen 3-fifteen 309-377
ESR-a hundred twenty five 980-1850 nine.eight-58.eight 5.35-12.four one.sixty five-5.19 five.five-eighteen.five 408-451
ESR-125C 970-1830 nine.eight-fifty eight.eight seven.five-17.57 3.2-eighteen.five four-22 408-451
ESR-one hundred fifty 810-1730 nine.eight-58.eight 10.37-27.fifteen three.84-40.eighty two 7.five-forty five 688-848
ESR-one hundred seventy five 970-1520 nine.eight-58.eight 19.sixty five-36.sixty five seven.two-45.ninety five eleven-55 980-1080
ESR-200B 740-1450 9.8-58.8 19.sixty five-44.eight 10.fifteen-60.44 fifteen-75 1272-1546
ESR-200 810-1480 nine.8-fifty eight.eight 27.65-fifty nine.two 8.05-eighty,12 15-90 1272-1546
ESR-250B 1100-1480 nine.8-58.eight 54.seventy seven-77.55 19.97-ninety.ninety seven 30-a hundred and ten 1490-2454
ESR-250 990-1480 9.eight-58.eight 61.four-97.fifty two twenty.1-117.three thirty-132 1490-2454
ESR-300 990-1480 9.eight-fifty eight.8 26.4-167.eight 37-185 3326-3446
ESR-350 730-1480 9.eight-fifty eight.8 78.41-177.31   55-250  
ESR-50H 1230-2120 sixty eight .45-2.02 2.05-6.twelve three-7.five a hundred and sixty–a hundred and seventy
ESR-65H 1240-2130 63.7-ninety eight .seventy eight-two.fifty three two.89-seven.fifty five 4-11 198-230
ESR-80H 1140-1900 63.7-98 one.eighty two-four.55 5.five-fifteen 316-326
ESR-100H 1060-1980 sixty three.7-98 two.65-8.06 6.36-17.two 7.five-22 398-459
ESR-125H 980-1850 sixty 4.64-11.23 8.92-24.two 11-30 544-630
ESR-150H 810-1730 sixty eight nine.53-25.seventy six seventeen.16-65 18.5-75 752-1571
ESR-200H 810-1480 eight 25.34-56.92 42.34-a hundred and twenty 55-132 1426-1934
ESR-250H 990-1480 eight 58-ninety three.7 eighty three.two-205 ninety-220 2980-3468
ESR300H 990-1480 sixty eight 86.nine-134.1 114.7-270 132-280 3476-3998
ERF-245 650-980 9.eight-98 47.5-ninety seven.4 16-183 eighteen.five-200 3630-3690
ERF-250 650-980 9.eight-98 sixty one.6-one hundred twenty.four 19-227 22-250 4450-4500
ERF-290 650-980 nine.eight-seventy eight.four ninety two.3-128 22-213 30-250 4890-4710
ERF-295 650-980 nine.eight-78.4 ninety seven.3-152.5 23-227 30-250 4890-4880
ERF-297 650-980 9.eight-78.4 87.5-167.6 26-249 thirty-280 5330-5520
ERF-three hundred 650-980 9.eight-seventy eight.4 a hundred and one.5-188.7 29-278 37-315 5330-5520
ERF-350 650-980 9.8-78.four 126-224.9 34-249 forty five-280 5210-6470
ERG-300 590-730 nine.eight-98 128.three-196 38-362 45-400 9440-15710
ERG-350 590-730 nine.eight-98 159.three-231.6 43-420 fifty five-450 9700-1571
ERG-four hundred 590-730 9.8-83.3 52-449 75-five hundred 10090-11390
ERG-445 590-730 9.eight-73.5 229.7-327.8 fifty eight-477 75-560 10600-12230
ERG-450 590-730 9.8-seventy three.5 262.4-366.two sixty four-496 seventy five-560 10600-12230
ERG-five hundred 590-730 327.four-452.four 78-529 90-560 12790-14620
ERF-240-V 650-980 -9.8- -forty nine 38.1-78 13-76 18.5-90 3420-3285
ERF-245-V 650-980 -nine.8- -forty nine forty seven.5-97.four sixteen-95 22-a hundred and ten 3425-3360
ERF-250-V 650-980 -nine.8- -forty nine sixty three-120 19-117 22-132 3910-3830
ERF-290-V 650-980 -nine.eight- -49 72.6-one hundred forty four 22-136 30-160 4415-4270
ERF-295-V 650-980 -9.8- -49 76.six-152 23-one hundred forty five 30-one hundred sixty 4425-4485
ERF-297-V 650-980 -9.eight- -49 eighty four.3-166.8 26-160 thirty-180 5000-4980
ERF-three hundred-V 650-980 -9.eight- -49 97-192 29-178 37-two hundred 5000-4980
ERF-350-V 650-980 -nine.8- -49 116-225 34-209 forty five-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 forty three-216 55-250 9500-9470
ERG-400V 590-730 -9.eight- -49 199-290 52-269 seventy five-315 9900-10130
ERG-445V 590-730 -9.8- -forty nine 224.8-326.nine 58-303 seventy five-355 9900-10130
ERG-450V 590-730 -nine.8- -49 255-365 64-335 75-four hundred 11230-11300
ERG-500V 590-730 -nine.eight- -49 314-452 78-412 132-450 13630-13850
ERF-245W 650-980 -13.three- -53.three fifty three.5-101 21.5-102 thirty-a hundred and ten 3630-3360
ERF-250W 650-980 -13.3- -fifty three.three sixty nine-127 26.5-127 thirty-a hundred and sixty 3985-4115
ERF-290W 650-980 -13.3- -fifty three.three eighty two.6-a hundred and fifty thirty.five-149 37-185 4340-4580
ERF-295W 650-980 -thirteen.3- -53.three 87-158 32-158 37-185 4440-4580
ERF-297W 650-980 -thirteen.3- -53.3 ninety five-174 36-174 forty five-200 5230-5130
ERF-300W 650-980 -thirteen.three- -fifty three.3 109-195 forty-193 55-220 5230-5130
ERF-350W 650-980 -thirteen.3- -fifty three.three 129-230 fifty-230 75-250 5840-5670
ERG-300W 590-730 -thirteen.3- -53.3 142-197 fifty two-201 seventy five-220 9100-9000
ERF-350W 590-730 -13.three- -53.3 168-234.4 59-235.5 seventy five-280 9500-9600
ERG-400W 590-730 -thirteen.three- -fifty three.3 220-276.6 71-292 90-315 9900-10130
ERG-445W 590-730 -13.3- -53.3 244-294.6 82-331 90-four hundred 11230-11300
ERG450W 590-730 -13.three- -53.3 275-368.5 ninety one-366 one hundred ten-four hundred 11230-11300
650-980 ninety eight-196 64.8-112 a hundred thirty five-355 a hundred and sixty-400 8700-8600
650-980 98-196 eighty.8-139 167-439 185-five hundred 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
ETRG-four hundred
590-740 98-176.four 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 seventy two-121 75.six-121 90-160 6100-6470
650-980 -fifty three.3–80 93.8-154 ninety nine.5-186 a hundred and ten-220 7000-6400
650-980 -53.3–80 116-189 one hundred fifteen-220 132-250 7750-7760
EL81WD 580-980 nine.eight-fifty eight.8 54.two-one hundred thirty eighteen-151 forty five-185 3595
EL82WDB 580-980 9.8-58.8 72.eight-161 22-191 45-220 3860
EL83WDA 580-980 nine.8-58.9 101-213 28.five-202 forty five-220 4300
EL84WDA 580-980 nine.eight-58.8 129-267 35.4-252 forty five-280 4720
EL93WDA 580-730 9.eight-forty nine 230-329 56.4-311 75-355 7765
EL94WDA 580-730 9.eight-49 263-373 64-353 seventy five-four hundred 8130
EL95WDA 490-580 nine.eight-58.eight 308-434 eighty one.4-414 ninety-450 11500
EL96WDA 580 58.eight 381 497 560 11500
E397WN a thousand-1650 40 five-9      
E408WN 870-1650 40 ten-22      
E517WN 980-1580 40 twenty-30      
E520WN 930-1550 40 24-forty five      
E607WN 750-1250 forty forty five-seventy six      
E610WN 750-1250 forty seventy five-130      

Spare components and construction of our roots blower:

Package deal of our Roots Blower

Pack into iron case, two layer,blower body and motor in reduce layer, inlet/out silencer and so forth in higher layer

Roots blower pack method identical as iron circumstance, just adjust to Fumigation Free of charge Plywood Case

Our manufacturing facility is a specialist maker of Roots blowers which has in excess of 20 years’ experience in machinery
production. It is found in Xihu (West Lake) Dis. CZPT CZPT Park, fifty kilometers to the east of ZheJiang provincial
capital— HangZhou. Our organization also has practical targeted traffic transportation, as it is 15 kilometers away from
Diaozhen Town station of HangZhou-HangZhou expressway, and 30 kilometers away from CZPT HangZhou station of
ZheJiang -ZheJiang expressway.The major product of our company is ESR -kind Roots Blower. The roots
vacuum pump is a new sort of substantial-efficiency roots blower, which is created independently based mostly on the
domestic and overseas sophisticated systems. A number of patented technologies have been adopted on Roots
Blower, and hence we have made important results in energy conservation and noise reduction, etc.. So considerably, our
company has invested much more than thirty,000,000 RMB to introduce these kinds of advanced specialist products as
horizontal machining heart, vertical machining centre, two-way CNC surface area planer, CNC lathe, CNC milling
machine, CNC planer, airplane grinder, cylindrical grinding machine, and three coordinates testing device.
Aside from, we have taken different actions to CZPTize the approach flow this kind of as operating and cooperating
with numerous scientific research units, faculties and universities at property and abroad. We also continuously consider to
soak up and enhance the domestic innovative creation technologies, so as to market the upgrading and
optimization of the product and make the product top quality reach the innovative amount at residence and abroad.
ESR -sort Roots Blower involves a number of series this sort of as A few-leaves Type, Two-leaves Type and Centrifugal
Kind,which can be additional divided to hundreds of kinds. The products are broadly employed in sewage treatment,
pneumatic conveying,vacuum packaging, aquaculture, meals processing, electrical electricity, petrochemical, cement,
mining and other industries. Our goods have these kinds of rewards as minimal sound, strength saving, steady quality,
and extended services existence, and so on.. With the income outlets throughout the domestic money metropolitan areas, our products promote nicely all
in excess of the nation, and have been exported to North CZPTica,Russia, Malaysia, Indonesia, Vietnam, South Africa
and some other international locations. Having acquired the ISO9001 CZPT CZPT Program Certification, we have
recognized and enhanced the top quality assurance of the merchandise creating, producing, and installation.
From the process of style, analysis and growth to the finished goods, we have received the complete
process managed independently, hence delivering the total basis and dependability guarantee for the goods stability
and toughness. Having a perfect revenue network and soon after-income service, we supply our consumers with larger-
top quality and more efficient support.All workers of our company sincerely welcome the broad masses of pals to
manual, and negotiate enterprise with us.

Our Roots Blower Workshop

         Doosn Horzitonal CZPT Heart

The Application of the Roots Blower

Routine maintenance and inspection
(one) Check out all fasteners and finding pins circumstances no matter whether they are loosening.
(two) Often check out no matter whether the leakage phenomenon of the human body.
(three) Spend consideration to lubrication, sum of grease and noises when operating,
figure out no matter whether it operates below the required situations.
(4) 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 (artificial lithium grease penetration 220-250, fall level ≥
190ºC). Exchange the lubricant and grease right after very first two hundred hours working, and substitute
once again following a moth working. Later on, substitute the lubricant and grease in accordance to the
environment and lubricant (grease) good quality propose a suitable substitution for a few
(five) Always examine the inlet air filter, thoroughly clean or change the filter in time.
(6) Blower overload at times not immediately exhibited, so pay out interest to
the consumption and exhaust pressure, bearing temperature and the current enhance traits
of motor to determine regardless of whether the blower operates normally
(7) Prior to disassembling the blower, the assembling relation and proportions
need to be recorded or measured, make marks on factors to make sure the CZPT
specifications following assembling.
(eight) When freshly equipment or overhaul, the oil tank must be cleaned just before use
and propose substitute all grease soon after eight hrs managing.

Widespread failure reason and troubleshooting

No Failure Achievable reasons Elimination approaches
1 Friction
amongst the
(1) Impurities on the impeller,
ensuing in the gap is as well small
(two) Gear wear, resulting in a
large backlash
(three) The gear is not nicely fixed,
can not maintain the impeller
(four) Bearing dress in ensuing in
clearance growing.
(one) Remove dust and verify
regardless of whether there is injury areas
(two) Modify the gear hole, replace
the gears if the gear backlash is
increased than the average thirty% to
(three)Re-assemble the gears, hold
the taper contact spot is to 75%
(4)Change the bearing
2 Collision
impeller and
wall, the
impeller best
and casing
(one) Installation hole is not correct
(two) operating strain is way too
substantial, exceeding the specified
(three) Functioning temperature is also high
(four) Casing or foundation deformation,
positioning enthusiast failure
(five) Bearing axial spot is not good
(1) Adjust the hole
(2) Determine triggers of
overloading, decreased the force
to the specified benefit
(3) Check the set up
precision and reduce the pipe
(4) Examine and restore bearings,
and to ensure the clearance
three Temperature
also high
(one) Oil in tank is as well considerably, way too
thick or also soiled
(two) CZPT or silencer is blocked
(three)The stress is higher than
the specified worth
(4)Excessive use of the
impeller, huge hole
(5)Inadequate ventilation, indoor
temperature is higher, resulting in
inlet air’s substantial temperature
(6) The rotating speed is as well lower,end result in the belt slipping.
(one)Lessen the oil degree or count on
(2)Remove of blocking objects
(three)Reducing the stress through
the blower
(4)Mend its clearance
(five)Open vents to lessen room
(six) Improve velocity to avoid the
belt slipping.
four Inadequate
(1) The inlet filter is blocked
(two) Impeller wear and the hole
will increase way too a lot
(3) Belt slipping
(4) Huge imports pressure loss
(five) CZPT ventilation leakage
(one) Thoroughly clean the filter dust and
(two) Fix the gap
(3)Tighten the belt and boost
the amount of belts
(four)Alter the inlet force to the
specified worth
(five) Verify and fix the pipeline
five Oil leaking or
oil leaking
into the enclosure
(one)Higher tank situation trigger
leakage from the discharge port
(two) Seal wear, resulting in shaft oil spills
(3) The pressure is higher than
the specified benefit

(one)Decrease the oil degree
(2)Substitute the seals
(three)Obvious the air vents, 2mm diameter faucet is fixed in the
center chamber, open up the faucet
under the wall
6 Abnormal
vibration and
(1)Bearing clearance exceeds the
specified benefit or bearing put on
(2) The gear backlash is way too
huge, not in a limited set
(3) The international objects and dust
induced by the impeller and the
impeller, the impeller and the
housing collision
(4) the impeller shaft
deformation induced the collision
caused by overload,
(five) Friction between the impeller
and the inlet housing triggered by
(six) Unbalance of the impeller
caused by fouling or international
(7) CZPT bolts or other
fasteners are loosened
(1)Change bearings or bearing
(two)Reassemble equipment and make sure
(three)Cleansing blower, examine the
circumstance is ruined
(4)Check out the back pressure, examine
the wheel and alter hole
(five)Check out the filter and back again
strain, enhance the hole
in between the impeller inlet and the
(6)Thoroughly clean the impeller and the
casing, to make certain that the impeller
clearance operate
(seven) Tighten the anchor bolts and
leveling the base.
seven Motor
(1)When compared with the needed
force, the strain big difference
is large that the again force or
the inlet force is high
(2) In comparison with the
tools needs, blower
flow is too big, so its stress
(3)Inlet filter is blocked, or outlet
pipe is obstructed or blocked
(four) Collusion or friction (trapped)
rotating elements
(5) The oil amount is too higher
(6) Slim V-belt is overheat,
vibration is too massive, or pulley
is way too small
(one) Decrease the force to the
specified benefit
(2) Exhaust the extra gasoline into
the atmosphere or lessen the
blower speed
(3) Remove the obstructions
(four)Quickly shut down, check
the purpose
(5) Adjust the oil to the right
(6) Check the belt tension, and
replaced it with huge diameter

Our Support

one. Pre market service                                                                              2. Following market service                                          
a. recommend the suited model                                             c. on the internet specialized assist,                                                                                   
b. manufacturing unit tour                                                                              d. whole life spare areas and techinical assistance


twelve months gurantee for our roots blowers

Two Stage High Pressure Roots Blower