Double Oil Case Roots Blower for Pheumatic, Fishery

Double Oil Case Roots Blower for Pheumatic, Fishery

We make all sorts of roots blower, centrifugal blower, Our Primary items are as under:

Variety Diameter Charge of stream Stress
ESR-MJ(Intense Type) Φ50~Φ300mm .five~140m³/min nine.8KPa~98.8Kpa
ESR(Common Sort) Φ50~Φ350mm .five~140m³/min 9.8KPa~seventy eight.4Kpa
ESR-H(Higher-pressure Sort) Φ50~Φ350mm .seven~160m³/min 58.8KPa~ninety eight.8Kpa
ESR-V(Vacuum Pump) Φ50~Φ350mm .five~160m³/min 9.8KPa~53.3Kpa
EL Series 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 Sort Φ250~Φ500mm a hundred and twenty~420m³/min 9.8KPa~ninety eight.8Kpa

The operating theory of the 3-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 motion of a pair of
synchronous gears, the two rotors rotate in reverse 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 obtain the
function of blowing.

Attribute of our roots blower:
one. Big adjustment of the air quantity
2. Lower Sound
3. Large performance
four. Minimal vitality cosumption
five. Extended time daily life
six. Trustworthy operating, straightforward servicing,little footprint

The parameters of our roots blower:

Type Ratary Speed
Strain Rise
Shaft Electricity
Motor Unit Maximn
Excess weight(Kg)
ESR-50 1100-2120 9.8-58.eight .65-two.58 .3-three.fifty four .seventy five-4 128-158
ESR-sixty five 1100-2130 9.8-fifty eight.8 .94-three.sixty six .38-4.46 .seventy five-5.5 a hundred and fifty five-185
ESR-eighty 1140-1900 nine.eight-58.eight 2.34-5.forty three 1.04-7.42 two.2-eleven one hundred fifty five-277
ESR-100 1060-1980 9.eight-fifty eight.eight four.57-9.05 one.35-twelve.fifteen 3-15 309-377
ESR-125 980-1850 9.8-58.eight five.35-twelve.4 1.sixty five-5.19 5.five-18.5 408-451
ESR-125C 970-1830 nine.8-58.eight seven.5-17.fifty seven three.two-18.5 4-22 408-451
ESR-150 810-1730 nine.8-fifty eight.eight ten.37-27.15 3.eighty four-forty.eighty two seven.5-45 688-848
ESR-175 970-1520 9.8-fifty eight.8 19.65-36.sixty five seven.two-45.95 11-55 980-1080
ESR-200B 740-1450 nine.eight-58.8 19.sixty five-44.eight ten.15-sixty.forty four 15-75 1272-1546
ESR-two hundred 810-1480 9.eight-fifty eight.eight 27.sixty five-fifty nine.2 eight.05-80,twelve 15-90 1272-1546
ESR-250B 1100-1480 nine.eight-58.eight 54.seventy seven-seventy seven.fifty five 19.ninety seven-90.97 30-110 1490-2454
ESR-250 990-1480 nine.8-58.eight 61.4-ninety seven.52 thirty-132 1490-2454
ESR-three hundred 990-1480 nine.eight-58.8 26.four-167.8 37-185 3326-3446
ESR-350 730-1480 nine.8-58.8 78.41-177.31   fifty five-250  
ESR-50H 1230-2120 sixty three.7-ninety eight .45-2.02 2.05-six.12 three-7.5 160–a hundred and seventy
ESR-65H 1240-2130 sixty three.7-98 .seventy eight-2.53 two.89-seven.55 four-eleven 198-230
ESR-80H 1140-1900 one.eighty two-four.fifty five 5.five-fifteen 316-326
ESR-100H 1060-1980 two.sixty five-eight.06 6.36-seventeen.two 7.5-22 398-459
ESR-125H 980-1850 4.64-eleven.23 eight.ninety two-24.two 11-30 544-630
ESR-150H 810-1730 sixty three.7-ninety eight 9.53-twenty five.seventy six seventeen.sixteen-65 18.five-seventy five 752-1571
ESR-200H 810-1480 63.7-98 25.34-56.92 42.34-120 55-132 1426-1934
ESR-250H 990-1480 63.7-98 fifty 83.two-205 ninety-220 2980-3468
ESR300H 990-1480 63.7-ninety eight 86.nine-134.1 114.7-270 132-280 3476-3998
ERF-245 650-980 9.eight-98 47.5-ninety seven.four 16-183 18.five-200 3630-3690
ERF-250 650-980 nine.8-98 sixty one.6-a hundred and twenty.4 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 nine.8-seventy eight.four ninety seven.3-152.five 23-227 30-250 4890-4880
ERF-297 650-980 nine.eight-78.4 87.5-167.six 26-249 thirty-280 5330-5520
ERF-300 650-980 nine.8-78.four one hundred and 29-278 37-315 5330-5520
ERF-350 650-980 9.eight-78.four 126-224.9 34-249 45-280 5210-6470
ERG-three hundred 590-730 nine.eight-ninety eight 128.3-196 38-362 45-four hundred 9440-15710
ERG-350 590-730 nine.eight-98 159.three-231.six 43-420 55-450 9700-1571
ERG-four hundred 590-730 9.eight-eighty three.3 52-449 seventy five-500 10090-11390
ERG-445 590-730 nine.8-73.five 58-477 75-560 10600-12230
ERG-450 590-730 9.eight-73.five 262.4-366.two 64-496 75-560 10600-12230
ERG-five hundred 590-730 nine.8-63.7 327.four-452.4 seventy eight-529 ninety-560 12790-14620
ERF-240-V 650-980 -nine.eight- -forty nine 38.1-seventy eight thirteen-seventy six eighteen.5-ninety 3420-3285
ERF-245-V 650-980 -9.eight- -forty nine 47.5-97.4 16-ninety five 22-110 3425-3360
ERF-250-V 650-980 -nine.8- -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-160 4415-4270
ERF-295-V 650-980 -nine.eight- -forty nine seventy six.6-152 23-one hundred forty five 30-160 4425-4485
ERF-297-V 650-980 -nine.8- -forty nine eighty four.three-166.eight 26-one hundred sixty thirty-180 5000-4980
ERF-three hundred-V 650-980 -nine.8- -49 ninety seven-192 29-178 37-two hundred 5000-4980
ERF-350-V 650-980 -9.eight- -49 116-225 34-209 45-250 5400-5700
ERG-300V 590-730 -9.eight- -forty nine 133-193 38-184 forty five-220 7800-9100
ERG-350V 590-730 -9.eight- -forty nine 163-231 forty three-216 55-250 9500-9470
ERG-400V 590-730 -nine.8- -49 199-290 fifty two-269 75-315 9900-10130
ERG-445V 590-730 -nine.eight- -49 224.8-326.nine 58-303 seventy five-355 9900-10130
ERG-450V 590-730 -9.8- -49 255-365 64-335 75-400 11230-11300
ERG-500V 590-730 -9.eight- -49 314-452 78-412 132-450 13630-13850
ERF-245W 650-980 -13.three- -53.3 fifty three.five-one zero one 21.5-102 thirty-110 3630-3360
ERF-250W 650-980 -13.3- -fifty three.three sixty nine-127 26.five-127 30-a hundred and sixty 3985-4115
ERF-290W 650-980 -thirteen.three- -fifty three.3 82.6-150 30.five-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 -thirteen.three- -fifty three.3 ninety five-174 36-174 forty five-200 5230-5130
ERF-300W 650-980 -thirteen.3- -53.three 109-195 40-193 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 -13.three- -53.3 142-197 fifty two-201 75-220 9100-9000
ERF-350W 590-730 -13.3- -fifty three.3 168-234.4 59-235.five 75-280 9500-9600
ERG-400W 590-730 -thirteen.3- -fifty three.three 220-276.six seventy one-292 90-315 9900-10130
ERG-445W 590-730 -thirteen.3- -fifty three.three 244-294.six 82-331 ninety-400 11230-11300
ERG450W 590-730 -thirteen.three- -fifty three.3 275-368.5 ninety one-366 a hundred and ten-400 11230-11300
650-980 98-196 64.8-112 135-355 one hundred sixty-400 8700-8600
650-980 ninety eight-196 eighty.eight-139 167-439 185-500 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
(three hundred,four hundred)
590-740 98-176.4 205-273 380-773 450-900 21350-24200
590-740 98-176.4 263-428 476-955 560-a thousand 24200-27600
650-980 -fifty three.3–eighty seventy two-121 seventy five.6-121 ninety-160 6100-6470
650-980 -53.three–eighty ninety three.eight-154 ninety nine.five-186 110-220 7000-6400
650-980 -53.3–80 116-189 a hundred and fifteen-220 132-250 7750-7760
EL81WD 580-980 9.eight-fifty eight.8 fifty four.two-130 eighteen-151 forty five-185 3595
EL82WDB 580-980 nine.eight-58.eight 72.8-161 22-191 45-220 3860
EL83WDA 580-980 nine.8-fifty eight.9 one hundred and one-213 28.5-202 forty five-220 4300
EL84WDA 580-980 9.8-fifty eight.8 129-267 35.four-252 forty five-280 4720
EL93WDA 580-730 9.8-forty nine 230-329 56.four-311 seventy five-355 7765
EL94WDA 580-730 9.8-forty nine 263-373 64-353 75-four hundred 8130
EL95WDA 490-580 9.8-fifty eight.eight 308-434 eighty one.four-414 ninety-450 11500
EL96WDA 580 fifty eight.8 381 497 560 11500
E397WN a thousand-1650 40 5-9      
E408WN 870-1650 40 10-22      
E517WN 980-1580 40 20-thirty      
E520WN 930-1550 40 24-forty five      
E607WN 750-1250 forty 45-seventy six      
E610WN 750-1250 forty 75-one hundred thirty      

Spare parts and framework of our roots blower:

Package deal of our Roots Blower

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

Roots blower pack strategy very same as iron circumstance, just modify to Fumigation Cost-free Plywood Situation

Our manufacturing facility is a professional producer of Roots blowers which has more than 20 years’ experience in machinery
producing. It is found in Xihu (West Lake) Dis. CZPT CZPT Park, fifty kilometers to the east of ZheJiang provincial
cash— HangZhou. Our organization also has practical site visitors transportation, as it is fifteen kilometers away from
Diaozhen Town station of HangZhou-HangZhou expressway, and 30 kilometers absent from CZPT HangZhou station of
ZheJiang -ZheJiang expressway.The major solution of our organization is ESR -kind Roots Blower. The roots
vacuum pump is a new type of large-performance roots blower, which is designed independently dependent on the
domestic and international advanced systems. Numerous patented technologies have been adopted on Roots
Blower, and as a result we have created substantial results in power conservation and noise reduction, and many others.. So much, our
firm has invested far more than 30,000,000 RMB to introduce this sort of advanced skilled tools as
horizontal machining middle, vertical machining heart, two-way CNC surface area planer, CNC lathe, CNC milling
device, CNC planer, airplane grinder, cylindrical grinding device, and 3 coordinates tests equipment.
Besides, we have taken numerous measures to CZPTize the procedure flow this kind of as working and cooperating
with many scientific research units, colleges and universities at property and overseas. We also constantly attempt to
absorb and boost the domestic innovative generation systems, so as to encourage the upgrading and
optimization of the product and make the product top quality achieve the superior degree at residence and overseas.
ESR -kind Roots Blower includes numerous collection these kinds of as A few-leaves Sort, Two-leaves Sort and Centrifugal
Type,which can be even more divided to hundreds of versions. The goods are commonly utilised in sewage remedy,
pneumatic conveying,vacuum packaging, aquaculture, foods processing, electric electricity, petrochemical, cement,
mining and other industries. Our merchandise have this kind of rewards as reduced sound, energy preserving, steady quality,
and extended service existence, and so on.. With the sales outlets throughout the domestic capital cities, our merchandise market nicely all
above the region, and have been exported to North CZPTica,Russia, Malaysia, Indonesia, Vietnam, South Africa
and some other nations. Possessing got the ISO9001 CZPT CZPT Method Certification, we have
recognized and enhanced the top quality assurance of the goods designing, production, and set up.
From the approach of style, investigation and growth to the completed goods, we have received the whole
procedure managed independently, as a result delivering the entire basis and reliability assure for the items security
and toughness. Having a perfect revenue community and after-product sales provider, we supply our customers with greater-
high quality and much more efficient service.All workers of our organization sincerely welcome the broad masses of friends to
guide, and negotiate business with us.

Our Roots Blower Workshop

         Doosn Horzitonal CZPT Middle

The Software of the Roots Blower

Maintenance and inspection
(one) Check all fasteners and locating pins circumstances no matter whether they are loosening.
(2) Always verify no matter whether the leakage phenomenon of the human body.
(3) Shell out interest to lubrication, amount of grease and noises when operating,
figure out no matter whether it functions below the required circumstances.
(4) CZPT & grease: The lubricant is for medium load industrial gear oil
(quality 220, kinematic viscosity of 198 ~ 242mm2 / s 40ºC, flash stage ≥ 200ºC)
The grease is butter (synthetic lithium grease penetration 220-250, drop position ≥
190ºC). Exchange the lubricant and grease soon after first two hundred hrs working, and change
yet again soon after a moth working. Later, replace the lubricant and grease in accordance to the
surroundings and lubricant (grease) high quality suggest a appropriate substitute for a few
(five) Always check out the inlet air filter, thoroughly clean or replace the filter in time.
(6) Blower overload often not right away exhibited, so spend focus to
the consumption and exhaust strain, bearing temperature and the current enhance developments
of motor to decide regardless of whether the blower functions generally
(7) Before disassembling the blower, the assembling relation and proportions
must be recorded or calculated, make marks on factors to guarantee the CZPT
specifications after assembling.
(8) When freshly equipment or overhaul, the oil tank need to be cleaned prior to use
and suggest change all grease after eight several hours operating.

Frequent failure reason and troubleshooting

No Failure Attainable reasons Elimination approaches
one Friction
amongst the
(one) Impurities on the impeller,
resulting in the gap is way too little
(2) Equipment use, resulting in a
huge backlash
(3) The equipment is not properly fastened,
can not maintain the impeller
(4) Bearing dress in ensuing in
clearance rising.
(one) Take away filth and examine
no matter whether there is damage areas
(two) Adjust the gear gap, change
the gears if the gear backlash is
better than the typical thirty% to
(3)Re-assemble the gears, keep
the taper speak to region is to seventy five%
(4)Replace the bearing
two Collision
in between
impeller and
wall, the
impeller best
and casing
(one) Installation hole is not proper
(2) operating pressure is also
high, exceeding the specified
(three) Running temperature is way too higher
(four) Casing or foundation deformation,
positioning enthusiast failure
(five) Bearing axial place is not excellent
(1) Alter the gap
(2) Identify triggers of
overloading, decreased the stress
to the specified worth
(3) Examine the installation
accuracy and decrease the pipe
(four) Verify and repair bearings,
and to guarantee the clearance
three Temperature
as well substantial
(one) Oil in tank is way too significantly, too
thick or also soiled
(two) CZPT or silencer is blocked
(three)The force is higher than
the specified value
(4)Extreme wear of the
impeller, huge hole
(five)Very poor air flow, indoor
temperature is large, resulting in
inlet air’s higher temperature
(six) The rotating velocity is also minimal,result in the belt slipping.
(one)Decrease the oil level or depend on
(2)Remove of blocking objects
(three)Decreasing the pressure by means of
the blower
(4)Repair its clearance
(5)Open vents to lessen area
(6) Improve speed to avert the
belt slipping.
4 Inadequate
(one) The inlet filter is blocked
(2) Impeller wear and the hole
boosts as well much
(3) Belt slipping
(4) Huge imports stress decline
(5) CZPT air flow leakage
(one) Thoroughly clean the filter dust and
(2) Restore the gap
(3)Tighten the belt and boost
the variety of belts
(four)Change the inlet force to the
specified price
(five) Check and fix the pipeline
five Oil leaking or
oil leaking
into the enclosure
(1)Large tank situation cause
leakage from the discharge port
(2) Seal wear, ensuing in shaft oil spills
(three) The stress is higher than
the specified price

(1)Reduce the oil amount
(two)Exchange the seals
(3)Clear the air vents, 2mm diameter faucet is fixed in the
middle chamber, open the faucet
beneath the wall
six Abnormal
vibration and
(1)Bearing clearance exceeds the
specified benefit or bearing use
(2) The gear backlash is as well
big, not in a tight mounted
(three) The foreign objects and dust
brought on by the impeller and the
impeller, the impeller and the
housing collision
(4) the impeller shaft
deformation brought on the collision
caused by overload,
(five) Friction among the impeller
and the inlet housing brought on by
(6) Unbalance of the impeller
triggered by fouling or overseas
(7) CZPT bolts or other
fasteners are loosened
(1)Change bearings or bearing
(2)Reassemble gear and guarantee
(three)Cleansing blower, check out the
scenario is damaged
(4)Examine the back again strain, verify
the wheel and alter hole
(5)Check out the filter and back again
pressure, increase the gap
among the impeller inlet and the
(six)Cleanse the impeller and the
casing, to make sure that the impeller
clearance function
(7) Tighten the anchor bolts and
leveling the foundation.
7 Motor
(one)In contrast with the essential
force, the pressure distinction
is massive that the back pressure or
the inlet force is large
(2) In contrast with the
equipment requirements, blower
movement is way too big, so its force
(three)Inlet filter is blocked, or outlet
pipe is obstructed or blocked
(4) Collusion or friction (trapped)
rotating parts
(5) The oil amount is as well higher
(6) Narrow V-belt is overheat,
vibration is also huge, or pulley
is also small
(one) Minimize the pressure to the
specified benefit
(two) Exhaust the excessive fuel into
the environment or decrease the
blower speed
(3) Eliminate the obstructions
(four)Right away shut down, check
the reason
(5) Modify the oil to the proper
(six) Check out the belt pressure, and
changed it with big diameter

Our Provider

1. Pre sell service                                                                              two. Following promote service                                          
a. advise the suitable model                                             c. on-line technical assist,                                                                                   
b. manufacturing facility tour                                                                              d. complete life spare parts and techinical assist


twelve months gurantee for our roots blowers

Double Oil Case Roots Blower for Pheumatic, Fishery