Double Oil Case High Efficiency Roots Vacuum Pump for Pheumatic Transport

Double Oil Case High Efficiency Roots Vacuum Pump for Pheumatic Transport

We make all kinds of roots blower, centrifugal blower, Our Principal merchandise are as under:

Type Diameter Rate of movement Strain
ESR-MJ(Intense Kind) Φ50~Φ300mm .five~140m³/min nine.8KPa~98.8Kpa
ESR(Common Type) Φ50~Φ350mm .five~140m³/min nine.8KPa~78.4Kpa
ESR-H(High-force Type) Φ50~Φ350mm .7~160m³/min fifty eight.8KPa~ninety eight.8Kpa
ESR-V(Vacuum Pump) Φ50~Φ350mm .five~160m³/min nine.8KPa~53.3Kpa
EL Sequence Φ200~Φ600mm 20.3~750m³/min 9.8KPa~58.8Kpa
Multistage Centrifugal Blower
or C-Collection
Φ250~Φ500mm fifty~500m³/min 9.8KPa~98Kpa
ERR-ERG Sort Φ250~Φ500mm a hundred and twenty~420m³/min nine.8KPa~98.8Kpa

The functioning basic principle of the three-blade roots blower: two 3-lobed rotors are arranged in the cavity, and the
suction port and the discharge port are opened on each sides of the cavity. Through the action 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 gas in the chamber is pushed to attain the
goal of blowing.

Characteristic of our roots blower:
one. Massive adjustment of the air volume
2. Reduced Noise
3. Substantial performance
four. Low power cosumption
5. Long time existence
six. Dependable running, effortless routine maintenance,little footprint

The parameters of our roots blower:

Sort Ratary Pace
Force Rise
Shaft Energy
Motor Unit Maximn
Excess weight(Kg)
Electrical power
ESR-fifty 1100-2120 9.8-58.eight .65-two.58 .3-3.fifty four .seventy five-four 128-158
ESR-sixty five 1100-2130 nine.eight-58.eight .94-3.sixty six .38-four.forty six .75-5.5 a hundred and fifty five-185
ESR-eighty 1140-1900 nine.8-58.eight two.34-5.43 one.04-seven.42 2.2-eleven one hundred fifty five-277
ESR-one hundred 1060-1980 9.eight-58.8 four.fifty seven-nine.05 1.35-twelve.fifteen 3-fifteen 309-377
ESR-one hundred twenty five 980-1850 nine.8-58.eight 5.35-12.4 one.65-five.19 five.5-eighteen.five 408-451
ESR-125C 970-1830 9.eight-fifty eight.eight seven.five-seventeen.57 3.two-18.five 4-22 408-451
ESR-150 810-1730 nine.8-58.eight 10.37-27.fifteen 3.eighty four-40.82 seven.five-forty five 688-848
ESR-a hundred seventy five 970-1520 9.eight-fifty eight.8 19.65-36.65 7.two-forty five.95 11-55 980-1080
ESR-200B 740-1450 nine.8-58.eight 19.65-forty four.eight ten.fifteen-sixty.forty four 15-75 1272-1546
ESR-two hundred 810-1480 nine.8-fifty eight.eight 27.65-fifty nine.2 8.05-eighty,12 fifteen-ninety 1272-1546
ESR-250B 1100-1480 9.8-58.8 fifty four.seventy seven-seventy seven.55 19.ninety seven-ninety.ninety seven 30-one hundred ten 1490-2454
ESR-250 990-1480 nine.8-fifty eight.8 61.four-ninety seven.fifty two thirty-132 1490-2454
ESR-300 990-1480 nine.eight-58.eight 87.1-138.1 26.4-167.eight 37-185 3326-3446
ESR-350 730-1480 9.8-58.8 seventy eight.forty one-177.31   55-250  
ESR-50H 1230-2120 sixty three.7-ninety eight .forty five-two.02 2.05-six.12 three-7.5 a hundred and sixty–170
ESR-65H 1240-2130 sixty three.7-98 .78-2.fifty three 2.89-seven.fifty five four-eleven 198-230
ESR-80H 1140-1900 sixty 1.eighty two-4.55 5.5-fifteen 316-326
ESR-100H 1060-1980 sixty 2.65-eight.06 six.36-seventeen.two 7.five-22 398-459
ESR-125H 980-1850 sixty four.64-eleven.23 eight.92-24.2 eleven-thirty 544-630
ESR-150H 810-1730 63.7-98 nine.53-25.76 17.16-65 eighteen.5-seventy five 752-1571
ESR-200H 810-1480 sixty three.7-ninety eight 25.34-fifty six.92 forty two.34-120 55-132 1426-1934
ESR-250H 990-1480 eight 58-93.7 83.2-205 ninety-220 2980-3468
ESR300H 990-1480 eight 132-280 3476-3998
ERF-245 650-980 nine.eight-98 forty seven.5-97.four 16-183 18.5-200 3630-3690
ERF-250 650-980 nine.eight-98 61.6-a hundred and twenty.four 19-227 22-250 4450-4500
ERF-290 650-980 nine.eight-78.four ninety two.3-128 22-213 thirty-250 4890-4710
ERF-295 650-980 nine.eight-seventy eight.four 97.3-152.5 23-227 thirty-250 4890-4880
ERF-297 650-980 nine.eight-78.4 87.5-167.six 26-249 30-280 5330-5520
ERF-300 650-980 nine.8-seventy eight.4 29-278 37-315 5330-5520
ERF-350 650-980 nine.eight-78.4 126-224.nine 34-249 forty five-280 5210-6470
ERG-300 590-730 nine.8-98 128.3-196 38-362 45-four hundred 9440-15710
ERG-350 590-730 9.8-ninety eight 159.3-231.six 43-420 55-450 9700-1571
ERG-four hundred 590-730 nine.8-83.three 203.1-290.nine 52-449 75-500 10090-11390
ERG-445 590-730 9.eight-73.5 229.7-327.eight fifty eight-477 seventy five-560 10600-12230
ERG-450 590-730 9.8-seventy three.5 262.four-366.two 64-496 seventy five-560 10600-12230
ERG-500 590-730 9.eight-sixty three.7 327.4-452.four seventy eight-529 ninety-560 12790-14620
ERF-240-V 650-980 -nine.eight- -forty nine 38.1-78 thirteen-seventy six 18.5-ninety 3420-3285
ERF-245-V 650-980 -nine.8- -forty nine forty seven.5-ninety seven.4 sixteen-ninety five 22-one hundred ten 3425-3360
ERF-250-V 650-980 -9.8- -forty nine 63-120 19-117 22-132 3910-3830
ERF-290-V 650-980 -nine.eight- -49 seventy two.6-one hundred forty four 22-136 30-a hundred and sixty 4415-4270
ERF-295-V 650-980 -nine.eight- -forty nine seventy six.6-152 23-a hundred forty five 30-a hundred and sixty 4425-4485
ERF-297-V 650-980 -nine.8- -forty nine 84.3-166.eight 26-160 30-one hundred eighty 5000-4980
ERF-three hundred-V 650-980 -9.8- -forty nine 97-192 29-178 37-200 5000-4980
ERF-350-V 650-980 -9.eight- -forty nine 116-225 34-209 45-250 5400-5700
ERG-300V 590-730 -9.eight- -forty nine 133-193 38-184 45-220 7800-9100
ERG-350V 590-730 -nine.8- -49 163-231 43-216 fifty five-250 9500-9470
ERG-400V 590-730 -nine.eight- -forty nine 199-290 52-269 75-315 9900-10130
ERG-445V 590-730 -9.8- -49 224.eight-326.nine 58-303 seventy five-355 9900-10130
ERG-450V 590-730 -nine.eight- -forty nine 255-365 sixty four-335 seventy five-400 11230-11300
ERG-500V 590-730 -9.8- -forty nine 314-452 seventy eight-412 132-450 13630-13850
ERF-245W 650-980 -13.three- -fifty three.3 fifty three.5-one hundred and one 21.5-102 30-one hundred ten 3630-3360
ERF-250W 650-980 -13.three- -53.three 69-127 26.5-127 30-a hundred and sixty 3985-4115
ERF-290W 650-980 -thirteen.three- -fifty three.three eighty two.6-150 30.5-149 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.3 95-174 36-174 forty five-two hundred 5230-5130
ERF-300W 650-980 -thirteen.3- -fifty three.3 109-195 40-193 fifty five-220 5230-5130
ERF-350W 650-980 -13.three- -fifty three.three 129-230 fifty-230 75-250 5840-5670
ERG-300W 590-730 -13.3- -53.three 142-197 52-201 seventy five-220 9100-9000
ERF-350W 590-730 -thirteen.three- -fifty three.three 168-234.4 59-235.five 75-280 9500-9600
ERG-400W 590-730 -13.3- -53.three 220-276.six seventy one-292 90-315 9900-10130
ERG-445W 590-730 -thirteen.three- -53.3 244-294.six eighty two-331 ninety-400 11230-11300
ERG450W 590-730 -thirteen.three- -fifty three.3 275-368.5 ninety one-366 one hundred ten-four hundred 11230-11300
650-980 98-196 sixty four.eight-112 a hundred thirty five-355 160-400 8700-8600
650-980 98-196 eighty.eight-139 167-439 185-500 9200-9100
650-980 98-176.4 102-174 206-497 250-560 10320-10500
650-980 98-137.two 124-207 241-473 280-560 10700-11110
590-740 98-176.four 205-273 380-773 450-900 21350-24200
590-740 98-176.4 263-428 476-955 560-1000 24200-27600
650-980 -53.3–80 72-121 75.six-121 90-one hundred sixty 6100-6470
650-980 -53.three–80 ninety three.8-154 99.5-186 a hundred and ten-220 7000-6400
650-980 -53.3–eighty 116-189 115-220 132-250 7750-7760
EL81WD 580-980 nine.eight-58.eight 54.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 9.eight-58.nine a hundred and one-213 28.five-202 forty five-220 4300
EL84WDA 580-980 9.eight-fifty eight.eight 129-267 35.4-252 45-280 4720
EL93WDA 580-730 9.eight-forty nine 230-329 fifty six.4-311 75-355 7765
EL94WDA 580-730 nine.8-forty nine 263-373 sixty four-353 75-four hundred 8130
EL95WDA 490-580 9.8-fifty eight.eight 308-434 eighty one.4-414 90-450 11500
EL96WDA 580 58.8 381 497 560 11500
E397WN one thousand-1650 40 5-nine      
E408WN 870-1650 forty 10-22      
E517WN 980-1580 40 twenty-thirty      
E520WN 930-1550 40 24-forty five      
E607WN 750-1250 forty 45-76      
E610WN 750-1250 40 seventy five-130      

Spare components and framework of our roots blower:

Bundle of our Roots Blower

Pack into iron scenario, two layer,blower entire body and motor in reduced layer, inlet/out silencer etc in higher layer

Roots blower pack approach identical as iron circumstance, just adjust to Fumigation Totally free Plywood Scenario

Our manufacturing unit is a specialist maker of Roots blowers which has over twenty years’ experience in machinery
producing. It is positioned in Xihu (West Lake) Dis. CZPT CZPT Park, fifty kilometers to the east of ZheJiang provincial
money— HangZhou. Our organization also has handy targeted traffic 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 major solution of our firm is ESR -variety Roots Blower. The roots
vacuum pump is a new sort of large-performance roots blower, which is designed independently primarily based on the
domestic and foreign innovative technologies. Numerous patented technologies have been adopted on Roots
Blower, and as a result we have created significant results in energy conservation and noise reduction, etc.. So far, our
company has invested much more than 30,000,000 RMB to introduce this sort of sophisticated expert tools as
horizontal machining heart, vertical machining center, two-way CNC floor planer, CNC lathe, CNC milling
device, CNC planer, plane grinder, cylindrical grinding equipment, and 3 coordinates testing device.
Apart from, we have taken numerous actions to CZPTize the procedure flow this sort of as functioning and cooperating
with a lot of scientific research units, faculties and universities at home and overseas. We also continuously try to
take up and boost the domestic innovative creation technologies, so as to promote the upgrading and
optimization of the merchandise and make the product quality achieve the innovative amount at house and abroad.
ESR -kind Roots Blower contains numerous sequence such as Three-leaves Type, Two-leaves Sort and Centrifugal
Variety,which can be even more divided to hundreds of varieties. The goods are commonly used in sewage therapy,
pneumatic conveying,vacuum packaging, aquaculture, meals processing, electric electricity, petrochemical, cement,
mining and other industries. Our items have this sort of advantages as low sound, strength saving, steady high quality,
and prolonged support existence, and so forth.. With the income outlets throughout the domestic funds towns, our merchandise market well all
more than the country, and have been exported to North CZPTica,Russia, Malaysia, Indonesia, Vietnam, South Africa
and some other nations around the world. Obtaining got the ISO9001 CZPT CZPT Method Certification, we have
proven and enhanced the high quality assurance of the merchandise designing, producing, and set up.
From the approach of design, study and advancement to the finished goods, we have acquired the total
procedure controlled independently, thus providing the complete foundation and dependability assure for the merchandise stability
and toughness. Getting a perfect product sales network and soon after-product sales services, we offer our buyers with increased-
good quality and a lot more productive provider.All workers of our organization sincerely welcome the broad masses of close friends to
information, and negotiate business with us.

Our Roots Blower Workshop

         Doosn Horzitonal CZPT Center

The Software of the Roots Blower

Upkeep and inspection
(1) Verify all fasteners and locating pins conditions whether or not they are loosening.
(2) Usually examine whether the leakage phenomenon of the entire body.
(three) Pay out focus to lubrication, amount of grease and noises when working,
determine regardless of whether it performs below the required conditions.
(4) CZPT & grease: The lubricant is for medium load industrial gear oil
(quality 220, kinematic viscosity of 198 ~ 242mm2 / s 40ºC, flash level ≥ 200ºC)
The grease is butter (synthetic lithium grease penetration 220-250, fall level ≥
190ºC). Replace the lubricant and grease after very first 200 hrs operating, and substitute
again soon after a moth running. Afterwards, change the lubricant and grease according to the
setting and lubricant (grease) top quality suggest a suited substitute for a few
(five) Constantly check the inlet air filter, thoroughly clean or change the filter in time.
(6) Blower overload occasionally not immediately exhibited, so pay out attention to
the intake and exhaust pressure, bearing temperature and the present boost trends
of motor to establish whether the blower functions generally
(7) Prior to disassembling the blower, the assembling relation and proportions
have to be recorded or measured, make marks on components to make sure the CZPT
specifications after assembling.
(8) When recently device or overhaul, the oil tank ought to be cleaned just before use
and propose change all grease after 8 hrs working.

Frequent failure reason and troubleshooting

No Failure Attainable reasons Elimination strategies
one Friction
in between the
(one) Impurities on the impeller,
ensuing in the gap is too little
(2) Gear dress in, ensuing in a
massive backlash
(three) The equipment is not nicely fixed,
can not sustain the impeller
(four) Bearing wear resulting in
clearance increasing.
(one) Take away dust and check out
whether or not there is injury parts
(2) Change the gear hole, change
the gears if the gear backlash is
greater than the common thirty% to
(three)Re-assemble the gears, keep
the taper contact location is to 75%
(four)Exchange the bearing
two Collision
in between
impeller and
wall, the
impeller leading
and casing
(1) Set up gap is not correct
(2) working stress is also
higher, exceeding the specified
(three) Operating temperature is also high
(four) Casing or base deformation,
positioning admirer failure
(five) Bearing axial spot is not excellent
(1) Alter the hole
(two) Identify leads to of
overloading, reduced the strain
to the specified benefit
(3) Check out the installation
accuracy and reduce the pipe
(4) Examine and mend bearings,
and to make sure the clearance
three Temperature
way too higher
(one) Oil in tank is also significantly, as well
thick or too soiled
(2) CZPT or silencer is blocked
(3)The strain is increased than
the specified worth
(four)Excessive put on of the
impeller, big gap
(five)Inadequate air flow, indoor
temperature is substantial, resulting in
inlet air’s high temperature
(six) The rotating speed is too lower,consequence in the belt slipping.
(1)Reduce the oil amount or rely on
(two)Take away of blocking objects
(3)Minimizing the stress via
the blower
(4)Restore its clearance
(five)Open vents to lessen area
(6) Improve pace to avoid the
belt slipping.
four Insufficient
(1) The inlet filter is blocked
(2) Impeller dress in and the gap
boosts too much
(3) Belt slipping
(four) Massive imports strain loss
(5) CZPT ventilation leakage
(1) Clean the filter dust and
(two) Fix the hole
(three)Tighten the belt and enhance
the quantity of belts
(4)Change the inlet stress to the
specified benefit
(5) Check and restore the pipeline
five Oil leaking or
oil leaking
into the enclosure
(1)Substantial tank situation lead to
leakage from the discharge port
(two) Seal use, resulting in shaft oil spills
(3) The stress is greater than
the specified benefit

(one)Lessen the oil stage
(two)Replace the seals
(three)Obvious the air vents, 2mm diameter faucet is set in the
middle chamber, open the faucet
beneath the wall
six Abnormal
vibration and
(one)Bearing clearance exceeds the
specified worth or bearing use
(2) The gear backlash is as well
massive, not in a restricted mounted
(three) The overseas objects and dust
triggered by the impeller and the
impeller, the impeller and the
housing collision
(four) the impeller shaft
deformation caused the collision
caused by overload,
(five) Friction in between the impeller
and the inlet housing caused by
(6) Unbalance of the impeller
brought on by fouling or overseas
entire body
(seven) CZPT bolts or other
fasteners are loosened
(one)Substitute bearings or bearing
(two)Reassemble equipment and make sure
(three)Cleaning blower, examine the
circumstance is damaged
(4)Check out the back again strain, examine
the wheel and change hole
(5)Examine the filter and back
pressure, enhance the hole
among the impeller inlet and the
(six)Clean the impeller and the
casing, to guarantee that the impeller
clearance perform
(7) Tighten the anchor bolts and
leveling the base.
7 Motor
(one)In contrast with the needed
pressure, the stress difference
is huge that the back stress or
the inlet strain is higher
(2) In contrast with the
gear requirements, blower
flow is way too massive, so its pressure
(3)Inlet filter is blocked, or outlet
pipe is obstructed or blocked
(4) Collusion or friction (caught)
rotating elements
(5) The oil level is as well large
(6) Narrow V-belt is overheat,
vibration is as well huge, or pulley
is way too little
(one) Decrease the stress to the
specified worth
(2) Exhaust the excess fuel into
the atmosphere or minimize the
blower pace
(3) Get rid of the obstructions
(four)Right away shut down, verify
the cause
(5) Modify the oil to the correct
(6) Examine the belt rigidity, and
replaced it with massive diameter

Our Services

1. Pre offer service                                                                              two. After promote service                                          
a. suggest the appropriate model                                             c. on the web complex assistance,                                                                                   
b. manufacturing facility tour                                                                              d. complete daily life spare components and techinical assistance


12 months gurantee for our roots blowers

Double Oil Case High Efficiency Roots Vacuum Pump for Pheumatic Transport