Double Oil Case Roots Blower for Fishery, Pheumatic

Double Oil Case Roots Blower for Fishery, Pheumatic

We make all kinds of roots blower, centrifugal blower, Our Principal products are as beneath:

Variety Diameter Charge of flow Stress
ESR-MJ(Intensive Kind) Φ50~Φ300mm .five~140m³/min 9.8KPa~98.8Kpa
ESR(Regular Sort) Φ50~Φ350mm .five~140m³/min 9.8KPa~78.4Kpa
ESR-H(Higher-force Type) Φ50~Φ350mm .seven~160m³/min 58.8KPa~ninety eight.8Kpa
ESR-V(Vacuum Pump) Φ50~Φ350mm .five~160m³/min 9.8KPa~53.3Kpa
EL Sequence Φ200~Φ600mm twenty.three~750m³/min 9.8KPa~fifty eight.8Kpa
Multistage Centrifugal Blower
or C-Series
Φ250~Φ500mm fifty~500m³/min 9.8KPa~98Kpa
ERR-ERG Type Φ250~Φ500mm 120~420m³/min 9.8KPa~98.8Kpa

The functioning theory of the three-blade roots blower: two a few-lobed rotors are organized in the cavity, and the
suction port and the discharge port are opened on both sides of the cavity. Via the action 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 gasoline in the chamber is pushed to obtain the
objective of blowing.

Function of our roots blower:
one. Huge adjustment of the air volume
two. Lower Sound
three. Higher performance
four. Minimal vitality cosumption
five. Lengthy time lifestyle
six. Reputable working, easy upkeep,little footprint

The parameters of our roots blower:

Sort Ratary Speed
Strain Rise
Shaft Power
Motor Unit Maximn
ESR-fifty 1100-2120 9.8-fifty eight.8 .65-2.fifty eight .3-three.54 .75-four 128-158
ESR-sixty five 1100-2130 nine.8-fifty eight.8 .ninety four-three.sixty six .38-four.forty six .seventy five-five.five a hundred and fifty five-185
ESR-80 1140-1900 9.eight-fifty eight.eight 2.34-five.forty three one.04-7.forty two 2.two-eleven one hundred fifty five-277
ESR-one hundred 1060-1980 9.eight-fifty eight.eight four.fifty seven-9.05 one.35-12.15 three-fifteen 309-377
ESR-a hundred twenty five 980-1850 9.8-fifty eight.eight five.35-twelve.4 one.65-5.19 5.five-eighteen.five 408-451
ESR-125C 970-1830 9.eight-58.8 7.5-seventeen.fifty seven three.2-eighteen.5 4-22 408-451
ESR-150 810-1730 9.eight-fifty eight.8 ten.37-27.fifteen 3.eighty four-40.82 7.5-45 688-848
ESR-a hundred seventy five 970-1520 nine.8-58.8 19.sixty five-36.65 seven.two-forty five.95 11-55 980-1080
ESR-200B 740-1450 nine.8-58.eight 19.sixty five-forty four.eight ten.fifteen-60.forty four 15-seventy five 1272-1546
ESR-200 810-1480 nine.eight-fifty eight.8 27.65-fifty nine.two eight.05-80,12 15-90 1272-1546
ESR-250B 1100-1480 9.eight-58.eight fifty four.seventy seven-seventy seven.55 19.ninety seven-90.97 thirty-one hundred ten 1490-2454
ESR-250 990-1480 9.8-fifty eight.eight 61.4-ninety seven.fifty two 20.1-117.3 thirty-132 1490-2454
ESR-300 990-1480 nine.8-58.eight 87.1-138.1 26.4-167.eight 37-185 3326-3446
ESR-350 730-1480 nine.eight-fifty eight.8 seventy eight.41-177.31   55-250  
ESR-50H 1230-2120 eight .forty five-2.02 two.05-6.twelve 3-7.5 160–one hundred seventy
ESR-65H 1240-2130 sixty three.7-98 .78-2.fifty three 2.89-7.55 4-eleven 198-230
ESR-80H 1140-1900 63.7-98 1.eighty two-four.55 four.09-10.1 5.five-15 316-326
ESR-100H 1060-1980 63.7-98 two.sixty five-8.06 6.36-seventeen.2 seven.5-22 398-459
ESR-125H 980-1850 sixty three.7-ninety eight 4.sixty four-11.23 8.92-24.2 eleven-30 544-630
ESR-150H 810-1730 sixty three.7-ninety eight 9.fifty three-25.76 17.sixteen-65 eighteen.5-75 752-1571
ESR-200H 810-1480 sixty twenty five.34-56.ninety two forty two.34-one hundred twenty 55-132 1426-1934
ESR-250H 990-1480 63.7-98 58-ninety 83.two-205 ninety-220 2980-3468
ESR300H 990-1480 eight 86.nine-134.1 132-280 3476-3998
ERF-245 650-980 9.8-98 47.five-ninety seven.four sixteen-183 18.5-200 3630-3690
ERF-250 650-980 nine.8-ninety eight 61.6-a hundred and twenty.4 19-227 22-250 4450-4500
ERF-290 650-980 9.8-78.4 92.three-128 22-213 30-250 4890-4710
ERF-295 650-980 9.eight-seventy eight.4 ninety seven.3-152.five 23-227 thirty-250 4890-4880
ERF-297 650-980 9.8-78.4 87.5-167.6 26-249 thirty-280 5330-5520
ERF-three hundred 650-980 9.eight-78.four one hundred and 29-278 37-315 5330-5520
ERF-350 650-980 nine.8-78.4 126-224.nine 34-249 45-280 5210-6470
ERG-300 590-730 9.8-98 128.3-196 38-362 forty five-400 9440-15710
ERG-350 590-730 9.eight-98 159.3-231.6 43-420 fifty five-450 9700-1571
ERG-400 590-730 9.8-eighty three.three 52-449 seventy five-500 10090-11390
ERG-445 590-730 9.eight-73.five 58-477 seventy five-560 10600-12230
ERG-450 590-730 9.8-seventy three.5 262.4-366.two 64-496 seventy five-560 10600-12230
ERG-five hundred 590-730 nine.eight-63.7 327.four-452.four 78-529 90-560 12790-14620
ERF-240-V 650-980 -nine.eight- -49 thirteen-seventy six eighteen.five-ninety 3420-3285
ERF-245-V 650-980 -nine.eight- -49 forty seven.five-ninety seven.4 16-95 22-one hundred ten 3425-3360
ERF-250-V 650-980 -nine.8- -49 63-120 19-117 22-132 3910-3830
ERF-290-V 650-980 -nine.8- -49 seventy two.6-a hundred and forty four 22-136 thirty-one hundred sixty 4415-4270
ERF-295-V 650-980 -9.eight- -49 76.six-152 23-one hundred forty five thirty-one hundred sixty 4425-4485
ERF-297-V 650-980 -nine.8- -forty nine 84.3-166.8 26-160 thirty-one hundred eighty 5000-4980
ERF-300-V 650-980 -9.8- -forty nine 97-192 29-178 37-200 5000-4980
ERF-350-V 650-980 -nine.eight- -49 116-225 34-209 45-250 5400-5700
ERG-300V 590-730 -9.eight- -49 133-193 38-184 45-220 7800-9100
ERG-350V 590-730 -nine.8- -forty nine 163-231 43-216 fifty five-250 9500-9470
ERG-400V 590-730 -nine.8- -49 199-290 52-269 seventy five-315 9900-10130
ERG-445V 590-730 -nine.8- -forty nine 224.8-326.nine fifty eight-303 seventy five-355 9900-10130
ERG-450V 590-730 -nine.8- -49 255-365 sixty four-335 75-400 11230-11300
ERG-500V 590-730 -9.eight- -forty nine 314-452 seventy eight-412 132-450 13630-13850
ERF-245W 650-980 -thirteen.three- -fifty three.three fifty three.five-one hundred and one 21.five-102 30-one hundred ten 3630-3360
ERF-250W 650-980 -thirteen.3- -fifty three.3 sixty nine-127 26.5-127 30-one hundred sixty 3985-4115
ERF-290W 650-980 -13.3- -fifty three.3 eighty two.six-a hundred and fifty thirty.5-149 37-185 4340-4580
ERF-295W 650-980 -13.three- -53.3 87-158 32-158 37-185 4440-4580
ERF-297W 650-980 -13.three- -53.3 ninety five-174 36-174 forty five-200 5230-5130
ERF-300W 650-980 -thirteen.3- -fifty three.3 109-195 forty-193 fifty five-220 5230-5130
ERF-350W 650-980 -thirteen.three- -53.three 129-230 fifty-230 seventy five-250 5840-5670
ERG-300W 590-730 -13.three- -fifty three.3 142-197 fifty two-201 75-220 9100-9000
ERF-350W 590-730 -thirteen.three- -53.three 168-234.four fifty nine-235.five 75-280 9500-9600
ERG-400W 590-730 -thirteen.3- -53.3 220-276.6 71-292 90-315 9900-10130
ERG-445W 590-730 -13.three- -53.three 244-294.6 eighty two-331 90-400 11230-11300
ERG450W 590-730 -thirteen.3- -53.3 275-368.five ninety one-366 a hundred and ten-four hundred 11230-11300
650-980 98-196 sixty four.8-112 one hundred thirty five-355 one hundred sixty-four hundred 8700-8600
650-980 98-196 eighty.eight-139 167-439 185-500 9200-9100
ETRF-three hundred
650-980 ninety eight-176.four 102-174 206-497 250-560 10320-10500
650-980 ninety eight-137.two 124-207 241-473 280-560 10700-11110
ETRG-four hundred
(three hundred,four hundred)
590-740 98-176.four 205-273 380-773 450-900 21350-24200
590-740 ninety eight-176.4 263-428 476-955 560-a thousand 24200-27600
650-980 -53.3–eighty seventy two-121 seventy five.6-121 ninety-a hundred and sixty 6100-6470
650-980 -fifty three.three–80 93.8-154 99.5-186 110-220 7000-6400
650-980 -53.three–80 116-189 one hundred fifteen-220 132-250 7750-7760
EL81WD 580-980 9.eight-58.8 fifty four.two-a hundred thirty eighteen-151 forty five-185 3595
EL82WDB 580-980 nine.8-58.8 72.eight-161 22-191 45-220 3860
EL83WDA 580-980 9.eight-58.nine 101-213 28.5-202 45-220 4300
EL84WDA 580-980 nine.eight-fifty eight.eight 129-267 35.four-252 forty five-280 4720
EL93WDA 580-730 9.8-49 230-329 56.four-311 seventy five-355 7765
EL94WDA 580-730 nine.8-forty nine 263-373 sixty four-353 seventy five-four hundred 8130
EL95WDA 490-580 9.8-58.8 308-434 eighty one.4-414 90-450 11500
EL96WDA 580 58.eight 381 497 560 11500
E397WN 1000-1650 40 five-9      
E408WN 870-1650 forty ten-22      
E517WN 980-1580 40 twenty-30      
E520WN 930-1550 forty 24-forty five      
E607WN 750-1250 forty forty five-seventy six      
E610WN 750-1250 forty 75-a hundred thirty      

Spare components and construction of our roots blower:

Bundle of our Roots Blower

Pack into iron circumstance, two layer,blower human body and motor in lower layer, inlet/out silencer and so on in higher layer

Roots blower pack technique identical as iron scenario, just change to Fumigation Free Plywood Case

Our manufacturing unit is a skilled maker of Roots blowers which has over twenty years’ experience in machinery
producing. It is situated in Xihu (West Lake) Dis. CZPT CZPT Park, fifty kilometers to the east of ZheJiang provincial
cash— HangZhou. Our firm also has handy traffic transportation, as it is 15 kilometers away from
Diaozhen Town station of HangZhou-HangZhou expressway, and thirty kilometers absent from CZPT HangZhou station of
ZheJiang -ZheJiang expressway.The major product of our organization is ESR -variety Roots Blower. The roots
vacuum pump is a new kind of higher-efficiency roots blower, which is created independently based mostly on the
domestic and foreign innovative technologies. Numerous patented technologies have been adopted on Roots
Blower, and therefore we have made considerable consequences in energy conservation and noise reduction, and many others.. So significantly, our
business has invested far more than 30,000,000 RMB to introduce this kind of innovative skilled gear as
horizontal machining centre, vertical machining centre, two-way CNC area planer, CNC lathe, CNC milling
device, CNC planer, plane grinder, cylindrical grinding equipment, and a few coordinates screening device.
Aside from, we have taken numerous measures to CZPTize the method circulation this sort of as doing work and cooperating
with a lot of scientific research units, schools and universities at home and overseas. We also constantly try to
soak up and enhance the domestic advanced production technologies, so as to promote the upgrading and
optimization of the product and make the item good quality attain the superior stage at house and overseas.
ESR -variety Roots Blower consists of several sequence such as 3-leaves Type, Two-leaves Type and Centrifugal
Sort,which can be additional divided to hundreds of versions. The merchandise are commonly used in sewage treatment method,
pneumatic conveying,vacuum packaging, aquaculture, food processing, electric powered electricity, petrochemical, cement,
mining and other industries. Our items have these kinds of advantages as minimal sounds, strength preserving, steady high quality,
and prolonged support daily life, and many others.. With the sales outlets throughout the domestic money metropolitan areas, our merchandise market well all
above the region, and have been exported to North CZPTica,Russia, Malaysia, Indonesia, Vietnam, South Africa
and some other international locations. Obtaining received the ISO9001 CZPT CZPT Technique Certification, we have
established and improved the quality assurance of the merchandise designing, manufacturing, and set up.
From the approach of layout, study and growth to the concluded items, we have got the total
process controlled independently, as a result providing the complete basis and reliability assure for the items balance
and sturdiness. Possessing a perfect product sales network and right after-revenue provider, we supply our consumers with greater-
high quality and far more successful support.All staff of our organization sincerely welcome the wide masses of close friends to
information, and negotiate company with us.

Our Roots Blower Workshop

         Doosn Horzitonal CZPT Heart

The Software of the Roots Blower

Routine maintenance and inspection
(1) Verify all fasteners and finding pins problems whether they are loosening.
(two) Constantly examine regardless of whether the leakage phenomenon of the physique.
(three) Shell out interest to lubrication, volume of grease and noises when operating,
decide no matter whether it operates under the necessary conditions.
(4) CZPT & grease: The lubricant is for medium load industrial equipment oil
(grade 220, kinematic viscosity of 198 ~ 242mm2 / s 40ºC, flash point ≥ 200ºC)
The grease is butter (artificial lithium grease penetration 220-250, drop stage ≥
190ºC). Exchange the lubricant and grease following first two hundred hours operating, and replace
again soon after a moth working. Afterwards, replace the lubricant and grease according to the
surroundings and lubricant (grease) good quality propose a suitable substitute for 3
(5) Always examine the inlet air filter, thoroughly clean or change the filter in time.
(6) Blower overload often not right away exhibited, so pay out interest to
the ingestion and exhaust pressure, bearing temperature and the recent enhance developments
of motor to figure out no matter whether the blower functions typically
(seven) Just before disassembling the blower, the assembling relation and proportions
need to be recorded or measured, make marks on parts to guarantee the CZPT
requirements after assembling.
(eight) When newly machine or overhaul, the oil tank must be cleaned before use
and suggest exchange all grease soon after eight hrs operating.

Frequent failure reason and troubleshooting

No Failure Possible reasons Elimination techniques
1 Friction
between the
(1) Impurities on the impeller,
ensuing in the hole is way too tiny
(2) Gear dress in, ensuing in a
massive backlash
(three) The gear is not properly set,
can not keep the impeller
(four) Bearing dress in resulting in
clearance growing.
(1) Remove grime and examine
regardless of whether there is harm elements
(two) Alter the equipment gap, substitute
the gears if the equipment backlash is
higher than the common thirty% to
(three)Re-assemble the gears, preserve
the taper contact region is to seventy five%
(four)Change the bearing
two Collision
impeller and
wall, the
impeller top
and casing
(one) Installation gap is not appropriate
(two) running stress is as well
substantial, exceeding the specified
(3) Working temperature is too substantial
(4) Casing or base deformation,
positioning supporter failure
(five) Bearing axial spot is not excellent
(one) Modify the gap
(2) Determine causes of
overloading, lowered the stress
to the specified benefit
(3) Check the set up
accuracy and lessen the pipe
(4) Check out and mend bearings,
and to guarantee the clearance
3 Temperature
too higher
(1) Oil in tank is too a lot, too
thick or also filthy
(two) CZPT or silencer is blocked
(three)The strain is increased than
the specified benefit
(4)Abnormal dress in of the
impeller, large hole
(5)Poor air flow, indoor
temperature is substantial, ensuing in
inlet air’s high temperature
(six) The rotating velocity is way too reduced,consequence in the belt slipping.
(1)Decrease the oil stage or depend on
(2)Get rid of of blocking objects
(three)Lowering the pressure through
the blower
(4)Mend its clearance
(5)Open vents to lessen area
(6) Boost pace to stop the
belt slipping.
4 Inadequate
(one) The inlet filter is blocked
(two) Impeller wear and the hole
will increase also a lot
(3) Belt slipping
(four) Huge imports pressure reduction
(5) CZPT air flow leakage
(1) Clean the filter dust and
(two) Mend the hole
(three)Tighten the belt and enhance
the number of belts
(4)Modify the inlet pressure to the
specified benefit
(5) Check out and mend the pipeline
five Oil leaking or
oil leaking
into the enclosure
(1)Large tank situation cause
leakage from the discharge port
(two) Seal use, resulting in shaft oil spills
(three) The force is higher than
the specified value

(1)Minimize the oil level
(2)Replace the seals
(3)Distinct the air vents, 2mm diameter faucet is fastened in the
middle chamber, open up the faucet
below the wall
6 Abnormal
vibration and
(one)Bearing clearance exceeds the
specified worth or bearing wear
(two) The gear backlash is as well
massive, not in a tight set
(three) The international objects and dust
caused by the impeller and the
impeller, the impeller and the
housing collision
(4) the impeller shaft
deformation brought on the collision
triggered by overload,
(5) Friction amongst the impeller
and the inlet housing caused by
(six) Unbalance of the impeller
caused by fouling or overseas
(7) CZPT bolts or other
fasteners are loosened
(one)Substitute bearings or bearing
(2)Reassemble gear and guarantee
(3)Cleansing blower, verify the
situation is damaged
(4)Verify the back strain, check out
the wheel and change gap
(5)Verify the filter and back again
pressure, boost the gap
among the impeller inlet and the
(six)Thoroughly clean the impeller and the
casing, to make sure that the impeller
clearance work
(7) Tighten the anchor bolts and
leveling the base.
seven Motor
(one)When compared with the required
stress, the stress difference
is massive that the back strain or
the inlet strain is large
(2) In contrast with the
gear specifications, blower
circulation is also large, so its stress
(three)Inlet filter is blocked, or outlet
pipe is obstructed or blocked
(four) Collusion or friction (stuck)
rotating areas
(5) The oil level is also higher
(6) Slim V-belt is overheat,
vibration is too big, or pulley
is as well small
(1) Lessen the stress to the
specified worth
(two) Exhaust the extra gas into
the ambiance or reduce the
blower velocity
(three) Eliminate the obstructions
(4)Instantly shut down, check
the purpose
(5) Change the oil to the appropriate
(6) Examine the belt stress, and
changed it with massive diameter

Our Support

one. Pre promote service                                                                              2. After offer service                                          
a. advise the suitable model                                             c. on the web technological support,                                                                                   
b. factory tour                                                                              d. total daily life spare areas and techinical help


twelve months gurantee for our roots blowers

Double Oil Case Roots Blower for Fishery, Pheumatic