Two Stage High Pressure Roots Blower

We make all types of roots blower, centrifugal blower, Our Primary items are as underneath:

Type Diameter Price of circulation Strain
ESR-MJ(Intense Variety) Φ50~Φ300mm .five~140m³/min 9.8KPa~98.8Kpa
ESR(Ordinary Type) Φ50~Φ350mm .5~140m³/min 9.8KPa~78.4Kpa
ESR-H(Higher-stress Type) Φ50~Φ350mm .7~160m³/min fifty eight.8KPa~98.8Kpa
ESR-V(Vacuum Pump) Φ50~Φ350mm .5~160m³/min nine.8KPa~fifty three.3Kpa
EL Sequence Φ200~Φ600mm 20.3~750m³/min 9.8KPa~58.8Kpa
Multistage Centrifugal Blower
or C-Sequence
Φ250~Φ500mm 50~500m³/min nine.8KPa~98Kpa
ERR-ERG Type Φ250~Φ500mm a hundred and twenty~420m³/min 9.8KPa~98.8Kpa

The functioning basic principle of the a few-blade roots blower: two a few-lobed rotors are organized in the cavity, and the
suction port and the discharge port are opened on the two sides of the cavity. Via 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
goal of blowing.

Attribute of our roots blower:
one. Big adjustment of the air quantity
two. Lower Sound
three. High effectiveness
4. Reduced strength cosumption
five. Extended time daily life
six. Reputable working, straightforward routine maintenance,small footprint

The parameters of our roots blower:

Kind Ratary Velocity
Force Increase
Shaft Power
Motor Unit Maximn
ESR-50 1100-2120 nine.8-fifty eight.eight .sixty five-2.fifty eight .three-three.54 .seventy five-4 128-158
ESR-sixty five 1100-2130 9.eight-58.8 .ninety four-3.66 .38-four.forty six .75-five.5 one hundred fifty five-185
ESR-eighty 1140-1900 nine.8-58.eight two.34-five.43 1.04-7.forty two two.2-eleven 155-277
ESR-one hundred 1060-1980 9.eight-58.eight 4.fifty seven-nine.05 1.35-twelve.fifteen three-15 309-377
ESR-one hundred twenty five 980-1850 9.eight-58.8 five.35-twelve.four 1.65-5.19 five.five-18.5 408-451
ESR-125C 970-1830 9.8-fifty eight.8 seven.5-17.fifty seven three.two-eighteen.5 four-22 408-451
ESR-a hundred and fifty 810-1730 9.8-58.8 ten.37-27.15 three.eighty four-forty.82 seven.5-45 688-848
ESR-175 970-1520 9.eight-58.8 19.sixty five-36.sixty five 7.two-forty five.95 eleven-fifty five 980-1080
ESR-200B 740-1450 nine.8-58.8 19.65-forty four.8 ten.fifteen-60.44 fifteen-seventy five 1272-1546
ESR-two hundred 810-1480 9.8-fifty eight.8 27.65-59.2 eight.05-80,12 15-ninety 1272-1546
ESR-250B 1100-1480 9.8-58.8 54.77-seventy seven.fifty five 19.97-90.97 thirty-a hundred and ten 1490-2454
ESR-250 990-1480 nine.eight-fifty eight.8 61.4-97.52 thirty-132 1490-2454
ESR-300 990-1480 nine.8-fifty eight.eight 26.four-167.eight 37-185 3326-3446
ESR-350 730-1480 nine.eight-fifty eight.8 seventy eight.41-177.31   fifty five-250  
ESR-50H 1230-2120 63.7-ninety eight .forty five-2.02 2.05-6.twelve three-seven.five one hundred sixty–a hundred and seventy
ESR-65H 1240-2130 .seventy eight-2.fifty three 2.89-seven.fifty five 4-eleven 198-230
ESR-80H 1140-1900 one.82-four.55 five.5-fifteen 316-326
ESR-100H 1060-1980 sixty three.7-98 two.65-eight.06 6.36-seventeen.two seven.5-22 398-459
ESR-125H 980-1850 sixty four.sixty four-eleven.23 8.92-24.two eleven-thirty 544-630
ESR-150H 810-1730 sixty three.7-ninety eight nine.fifty three-twenty five.seventy six seventeen.sixteen-65 18.five-75 752-1571
ESR-200H 810-1480 eight twenty five.34-56.92 42.34-one hundred twenty 55-132 1426-1934
ESR-250H 990-1480 sixty eight 58-93.7 eighty three.two-205 90-220 2980-3468
ESR300H 990-1480 sixty eight 114.7-270 132-280 3476-3998
ERF-245 650-980 9.8-ninety eight 47.five-97.4 sixteen-183 eighteen.5-200 3630-3690
ERF-250 650-980 nine.8-ninety eight 61.6-one hundred twenty.4 19-227 22-250 4450-4500
ERF-290 650-980 nine.eight-78.4 92.three-128 22-213 thirty-250 4890-4710
ERF-295 650-980 nine.eight-78.4 97.3-152.five 23-227 thirty-250 4890-4880
ERF-297 650-980 9.8-seventy eight.4 87.5-167.6 26-249 30-280 5330-5520
ERF-300 650-980 9.eight-seventy eight.4 one zero 29-278 37-315 5330-5520
ERF-350 650-980 nine.8-78.four 126-224.9 34-249 45-280 5210-6470
ERG-300 590-730 nine.8-ninety eight 128.3-196 38-362 45-four hundred 9440-15710
ERG-350 590-730 9.8-ninety eight 159.3-231.six forty three-420 55-450 9700-1571
ERG-four hundred 590-730 nine.eight-83.3 fifty two-449 seventy five-five hundred 10090-11390
ERG-445 590-730 9.8-73.5 58-477 75-560 10600-12230
ERG-450 590-730 9.eight-73.five 262.four-366.2 64-496 75-560 10600-12230
ERG-five hundred 590-730 nine.8-63.7 327.4-452.4 78-529 ninety-560 12790-14620
ERF-240-V 650-980 -nine.eight- -49 38.1-78 thirteen-seventy six eighteen.5-ninety 3420-3285
ERF-245-V 650-980 -nine.eight- -49 forty seven.five-ninety seven.four sixteen-ninety five 22-one hundred ten 3425-3360
ERF-250-V 650-980 -9.eight- -49 63-one hundred twenty 19-117 22-132 3910-3830
ERF-290-V 650-980 -9.eight- -49 72.six-one hundred forty four 22-136 thirty-one hundred sixty 4415-4270
ERF-295-V 650-980 -9.8- -49 76.6-152 23-one hundred forty five 30-160 4425-4485
ERF-297-V 650-980 -nine.eight- -forty nine 84.3-166.eight 26-a hundred and sixty thirty-a hundred and eighty 5000-4980
ERF-three hundred-V 650-980 -9.8- -49 ninety seven-192 29-178 37-200 5000-4980
ERF-350-V 650-980 -9.8- -forty nine 116-225 34-209 45-250 5400-5700
ERG-300V 590-730 -9.8- -forty nine 133-193 38-184 forty five-220 7800-9100
ERG-350V 590-730 -9.8- -forty nine 163-231 43-216 55-250 9500-9470
ERG-400V 590-730 -nine.eight- -49 199-290 52-269 seventy five-315 9900-10130
ERG-445V 590-730 -nine.8- -49 224.eight-326.nine 58-303 75-355 9900-10130
ERG-450V 590-730 -9.eight- -49 255-365 64-335 seventy five-four hundred 11230-11300
ERG-500V 590-730 -9.8- -49 314-452 seventy eight-412 132-450 13630-13850
ERF-245W 650-980 -13.three- -fifty three.3 fifty three.5-a hundred and one 21.5-102 30-a hundred and ten 3630-3360
ERF-250W 650-980 -thirteen.3- -53.3 69-127 26.five-127 30-a hundred and sixty 3985-4115
ERF-290W 650-980 -13.3- -53.3 82.six-150 thirty.5-149 37-185 4340-4580
ERF-295W 650-980 -13.3- -fifty three.three 87-158 32-158 37-185 4440-4580
ERF-297W 650-980 -13.three- -53.three 95-174 36-174 45-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 -thirteen.3- -fifty three.3 129-230 fifty-230 seventy five-250 5840-5670
ERG-300W 590-730 -13.3- -53.three 142-197 fifty two-201 75-220 9100-9000
ERF-350W 590-730 -thirteen.three- -53.3 168-234.4 59-235.five seventy five-280 9500-9600
ERG-400W 590-730 -13.3- -53.3 220-276.six seventy one-292 90-315 9900-10130
ERG-445W 590-730 -thirteen.three- -53.three 244-294.6 82-331 90-four hundred 11230-11300
ERG450W 590-730 -13.3- -53.3 275-368.5 ninety one-366 one hundred ten-400 11230-11300
650-980 ninety eight-196 sixty four.8-112 a hundred thirty five-355 a hundred and sixty-four hundred 8700-8600
650-980 98-196 80.eight-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
(300,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-one thousand 24200-27600
650-980 -fifty three.three–eighty 72-121 75.six-121 ninety-one hundred sixty 6100-6470
650-980 -53.3–eighty ninety three.eight-154 ninety nine.5-186 one hundred ten-220 7000-6400
(2505/three hundred)
650-980 -fifty three.3–eighty 116-189 one hundred fifteen-220 132-250 7750-7760
EL81WD 580-980 9.8-fifty eight.8 fifty four.two-130 18-151 forty five-185 3595
EL82WDB 580-980 nine.8-fifty eight.8 seventy two.eight-161 22-191 forty five-220 3860
EL83WDA 580-980 nine.8-58.9 one zero one-213 28.five-202 forty five-220 4300
EL84WDA 580-980 nine.eight-58.8 129-267 35.four-252 forty five-280 4720
EL93WDA 580-730 9.8-forty nine 230-329 56.4-311 75-355 7765
EL94WDA 580-730 9.8-forty nine 263-373 64-353 seventy five-400 8130
EL95WDA 490-580 9.eight-fifty eight.eight 308-434 eighty one.four-414 90-450 11500
EL96WDA 580 58.8 381 497 560 11500
E397WN a thousand-1650 40 5-9      
E408WN 870-1650 40 ten-22      
E517WN 980-1580 forty 20-thirty      
E520WN 930-1550 forty 24-45      
E607WN 750-1250 40 45-76      
E610WN 750-1250 forty seventy five-one hundred thirty      

Spare areas and structure of our roots blower:

Bundle of our Roots Blower

Pack into iron case, two layer,blower human body and motor in decrease layer, inlet/out silencer and so forth in upper layer

Roots blower pack strategy exact same as iron case, just modify to Fumigation Free of charge Plywood Circumstance

Our manufacturing unit is a expert producer of Roots blowers which has over twenty years’ experience in machinery
production. It is situated in Xihu (West Lake) Dis. CZPT CZPT Park, fifty kilometers to the east of ZheJiang provincial
capital— HangZhou. Our organization also has handy site visitors transportation, as it is 15 kilometers absent from
Diaozhen Town station of HangZhou-HangZhou expressway, and thirty kilometers away from CZPT HangZhou station of
ZheJiang -ZheJiang expressway.The top merchandise of our firm is ESR -variety Roots Blower. The roots
vacuum pump is a new kind of large-efficiency roots blower, which is produced independently primarily based on the
domestic and overseas superior technologies. Many patented technologies have been adopted on Roots
Blower, and thus we have made important results in energy conservation and noise reduction, etc.. So far, our
firm has invested much more than thirty,000,000 RMB to introduce this sort of innovative professional equipment as
horizontal machining heart, vertical machining heart, two-way CNC floor planer, CNC lathe, CNC milling
device, CNC planer, aircraft grinder, cylindrical grinding equipment, and 3 coordinates screening equipment.
Apart from, we have taken different actions to CZPTize the approach circulation these kinds of as functioning and cooperating
with several scientific research units, faculties and universities at property and overseas. We also continually attempt to
absorb and improve the domestic sophisticated manufacturing systems, so as to market the upgrading and
optimization of the item and make the solution high quality get to the superior degree at property and abroad.
ESR -variety Roots Blower contains many collection this sort of as A few-leaves Type, Two-leaves Kind and Centrifugal
Variety,which can be even more divided to hundreds of varieties. The items are broadly used in sewage therapy,
pneumatic conveying,vacuum packaging, aquaculture, foodstuff processing, electric electricity, petrochemical, cement,
mining and other industries. Our merchandise have these kinds of advantages as minimal sounds, energy saving, steady good quality,
and long services daily life, etc.. With the income outlets throughout the domestic capital metropolitan areas, our products sell well all
in excess of the region, and have been exported to North CZPTica,Russia, Malaysia, Indonesia, Vietnam, South Africa
and some other nations around the world. Having acquired the ISO9001 CZPT CZPT System Certification, we have
recognized and enhanced the high quality assurance of the goods designing, manufacturing, and set up.
From the method of layout, analysis and development to the concluded merchandise, we have got the entire
approach controlled independently, as a result delivering the entire foundation and trustworthiness ensure for the merchandise balance
and toughness. Obtaining a perfect income network and following-income services, we provide our buyers with greater-
quality and much more productive service.All personnel of our company sincerely welcome the wide masses of buddies to
guidebook, and negotiate organization with us.

Our Roots Blower Workshop

         Doosn Horzitonal CZPT Centre

The Software of the Roots Blower

Servicing and inspection
(one) Verify all fasteners and locating pins problems no matter whether they are loosening.
(two) Often check whether the leakage phenomenon of the human body.
(three) Shell out attention to lubrication, volume of grease and noises when running,
decide whether or not it operates beneath the needed circumstances.
(4) 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 (synthetic lithium grease penetration 220-250, drop stage ≥
190ºC). Change the lubricant and grease after very first 200 hours running, and replace
once again after a moth operating. Later, substitute the lubricant and grease according to the
atmosphere and lubricant (grease) good quality propose a ideal substitute for three
(five) Usually examine the inlet air filter, clear or substitute the filter in time.
(6) Blower overload at times not immediately exhibited, so pay out attention to
the ingestion and exhaust stress, bearing temperature and the current increase traits
of motor to figure out regardless of whether the blower functions usually
(seven) Prior to disassembling the blower, the assembling relation and dimensions
have to be recorded or calculated, make marks on parts to ensure the CZPT
requirements after assembling.
(eight) When newly equipment or overhaul, the oil tank need to be cleaned prior to use
and propose replace all grease following 8 hrs managing.

Typical failure explanation and troubleshooting

No Failure Feasible factors Elimination strategies
1 Friction
between the
(1) Impurities on the impeller,
resulting in the hole is as well tiny
(two) Equipment use, ensuing in a
massive backlash
(3) The equipment is not well fixed,
can not maintain the impeller
(4) Bearing put on ensuing in
clearance growing.
(1) Eliminate dust and verify
whether there is injury parts
(two) Modify the gear hole, replace
the gears if the equipment backlash is
higher than the average 30% to
(three)Re-assemble the gears, keep
the taper speak to spot is to 75%
(four)Substitute the bearing
two Collision
impeller and
wall, the
impeller prime
and casing
(1) Installation gap is not right
(2) functioning strain is way too
high, exceeding the specified
(3) Running temperature is way too higher
(four) Casing or base deformation,
positioning supporter failure
(five) Bearing axial area is not great
(one) Change the gap
(2) Identify causes of
overloading, decreased the force
to the specified value
(3) Examine the set up
accuracy and minimize the pipe
(four) Examine and repair bearings,
and to ensure the clearance
three Temperature
as well high
(one) Oil in tank is also much, as well
thick or also filthy
(two) CZPT or silencer is blocked
(three)The strain is larger than
the specified benefit
(4)Too much put on of the
impeller, large gap
(5)Very poor air flow, indoor
temperature is large, ensuing in
inlet air’s large temperature
(6) The rotating velocity is too low,outcome in the belt slipping.
(1)Decrease the oil amount or depend on
(2)Take away of blocking objects
(3)Minimizing the pressure by means of
the blower
(4)Fix its clearance
(5)Open up vents to reduce area
(6) Increase pace to avoid the
belt slipping.
4 Inadequate
(1) The inlet filter is blocked
(2) Impeller dress in and the hole
boosts too significantly
(3) Belt slipping
(4) Big imports stress reduction
(5) CZPT air flow leakage
(one) Clear the filter dust and
(2) Mend the gap
(three)Tighten the belt and boost
the variety of belts
(4)Alter the inlet strain to the
specified benefit
(5) Check and repair the pipeline
five Oil leaking or
oil leaking
into the enclosure
(one)High tank placement result in
leakage from the discharge port
(two) Seal dress in, ensuing in shaft oil spills
(3) The stress is increased than
the specified value

(one)Reduce the oil degree
(2)Change the seals
(three)Obvious the air vents, 2mm diameter faucet is fastened in the
middle chamber, open up the faucet
under the wall
6 Irregular
vibration and
(one)Bearing clearance exceeds the
specified value or bearing wear
(2) The equipment backlash is also
large, not in a limited mounted
(3) The international objects and dust
triggered by the impeller and the
impeller, the impeller and the
housing collision
(four) the impeller shaft
deformation caused the collision
triggered by overload,
(5) Friction between the impeller
and the inlet housing induced by
(6) Unbalance of the impeller
induced by fouling or overseas
human body
(7) CZPT bolts or other
fasteners are loosened
(one)Substitute bearings or bearing
(two)Reassemble gear and ensure
(three)Cleansing blower, check out the
case is destroyed
(four)Examine the again pressure, verify
the wheel and alter hole
(five)Examine the filter and back again
strain, boost the gap
amongst the impeller inlet and the
(six)Cleanse the impeller and the
casing, to make certain that the impeller
clearance function
(7) Tighten the anchor bolts and
leveling the foundation.
7 Motor
(one)In comparison with the needed
pressure, the stress variation
is big that the back stress or
the inlet strain is substantial
(two) When compared with the
tools specifications, blower
movement is also large, so its stress
(three)Inlet filter is blocked, or outlet
pipe is obstructed or blocked
(4) Collusion or friction (stuck)
rotating parts
(five) The oil level is too high
(six) Slim V-belt is overheat,
vibration is too huge, or pulley
is as well little
(one) Reduce the stress to the
specified worth
(2) Exhaust the surplus gas into
the ambiance or lessen the
blower pace
(three) Eliminate the obstructions
(four)Quickly shut down, verify
the cause
(five) Modify the oil to the proper
(6) Examine the belt pressure, and
replaced it with big diameter

Our Support

one. Pre promote service                                                                              two. After sell service                                          
a. advocate the suited model                                             c. online technological help,                                                                                   
b. factory tour                                                                              d. total life spare parts and techinical assist


twelve months gurantee for our roots blowers

Two Stage High Pressure Roots Blower