Single Oil Case Roots Blower for Fishiery, Pheumatic

Single Oil Case Roots Blower for Fishiery, Pheumatic

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

Variety Diameter Rate of flow Strain
ESR-MJ(Intensive Variety) Φ50~Φ300mm .5~140m³/min nine.8KPa~ninety eight.8Kpa
ESR(Regular Type) Φ50~Φ350mm .5~140m³/min 9.8KPa~78.4Kpa
ESR-H(Higher-stress Sort) Φ50~Φ350mm .seven~160m³/min 58.8KPa~ninety eight.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 50~500m³/min 9.8KPa~98Kpa
ERR-ERG Kind Φ250~Φ500mm a hundred and twenty~420m³/min 9.8KPa~98.8Kpa

The operating 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 each sides of the cavity. Via the motion 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 accomplish the
purpose of blowing.

Characteristic of our roots blower:
1. Big adjustment of the air quantity
two. Reduced Noise
three. Large performance
four. Low power cosumption
five. Long time existence
six. Reputable working, effortless servicing,modest footprint

The parameters of our roots blower:

Kind Ratary Velocity
Stress Rise
Shaft Electricity
Motor Device Maximn
ESR-fifty 1100-2120 nine.8-58.eight .sixty five-2.58 .3-3.fifty four .75-four 128-158
ESR-65 1100-2130 nine.eight-fifty eight.eight .94-three.sixty six .38-four.46 .seventy five-five.5 a hundred and fifty five-185
ESR-80 1140-1900 nine.8-fifty eight.8 2.34-five.43 1.04-seven.forty two 2.two-11 one hundred fifty five-277
ESR-a hundred 1060-1980 9.eight-fifty eight.8 four.57-nine.05 one.35-12.15 3-15 309-377
ESR-one hundred twenty five 980-1850 nine.eight-58.eight 5.35-twelve.four 1.65-5.19 5.5-18.5 408-451
ESR-125C 970-1830 nine.8-fifty eight.eight 7.five-17.fifty seven three.2-18.5 4-22 408-451
ESR-a hundred and fifty 810-1730 9.eight-fifty eight.eight ten.37-27.fifteen 3.eighty four-forty.eighty two seven.five-forty five 688-848
ESR-175 970-1520 nine.eight-58.eight 19.sixty five-36.65 seven.two-45.ninety five eleven-55 980-1080
ESR-200B 740-1450 9.eight-58.8 19.65-forty four.8 ten.15-60.forty four fifteen-seventy five 1272-1546
ESR-200 810-1480 9.eight-fifty eight.eight 27.65-fifty nine.2 eight.05-eighty,twelve 15-ninety 1272-1546
ESR-250B 1100-1480 nine.eight-58.8 fifty four.77-seventy seven.55 19.ninety seven-ninety.ninety seven thirty-110 1490-2454
ESR-250 990-1480 9.8-58.8 sixty one.4-97.52 20.1-117.three 30-132 1490-2454
ESR-300 990-1480 9.8-fifty eight.8 26.4-167.8 37-185 3326-3446
ESR-350 730-1480 9.eight-58.eight seventy eight.41-177.31   55-250  
ESR-50H 1230-2120 63.7-ninety eight .45-2.02 two.05-6.12 three-seven.5 160–a hundred and seventy
ESR-65H 1240-2130 63.7-ninety eight .seventy eight-2.fifty three 2.89-seven.55 four-eleven 198-230
ESR-80H 1140-1900 eight 1.eighty two-4.55 4.09-10.1 five.five-15 316-326
ESR-100H 1060-1980 sixty three.7-ninety eight 2.65-eight.06 six.36-seventeen.two 7.five-22 398-459
ESR-125H 980-1850 sixty three.7-98 4.sixty four-eleven.23 8.ninety two-24.2 eleven-30 544-630
ESR-150H 810-1730 sixty eight nine.53-25.seventy six 17.16-sixty five eighteen.five-75 752-1571
ESR-200H 810-1480 sixty three.7-98 25.34-56.ninety two 42.34-one hundred twenty fifty five-132 1426-1934
ESR-250H 990-1480 sixty three.7-98 58-ninety 83.two-205 ninety-220 2980-3468
ESR300H 990-1480 sixty three.7-ninety eight 132-280 3476-3998
ERF-245 650-980 nine.8-98 47.5-ninety seven.four sixteen-183 eighteen.5-two hundred 3630-3690
ERF-250 650-980 9.8-98 61.six-one hundred twenty.four 19-227 22-250 4450-4500
ERF-290 650-980 9.eight-78.four 92.three-128 22-213 thirty-250 4890-4710
ERF-295 650-980 9.eight-seventy eight.four ninety seven.3-152.five 23-227 30-250 4890-4880
ERF-297 650-980 9.eight-78.four 87.five-167.six 26-249 30-280 5330-5520
ERF-three hundred 650-980 9.eight-seventy eight.4 one zero 29-278 37-315 5330-5520
ERF-350 650-980 nine.8-seventy eight.four 126-224.9 34-249 forty five-280 5210-6470
ERG-300 590-730 9.eight-ninety eight 128.3-196 38-362 45-four hundred 9440-15710
ERG-350 590-730 9.8-ninety eight 159.three-231.6 forty three-420 fifty five-450 9700-1571
ERG-400 590-730 9.eight-83.3 fifty two-449 75-five hundred 10090-11390
ERG-445 590-730 9.eight-73.five 58-477 seventy five-560 10600-12230
ERG-450 590-730 9.8-73.five 262.4-366.2 64-496 75-560 10600-12230
ERG-five hundred 590-730 327.4-452.4 78-529 ninety-560 12790-14620
ERF-240-V 650-980 -9.eight- -49 38.1-seventy eight thirteen-seventy six 18.5-ninety 3420-3285
ERF-245-V 650-980 -nine.eight- -49 forty seven.five-ninety seven.four sixteen-95 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.six-one hundred forty four 22-136 thirty-160 4415-4270
ERF-295-V 650-980 -nine.8- -forty nine 76.6-152 23-a hundred forty five 30-160 4425-4485
ERF-297-V 650-980 -nine.eight- -forty nine 84.3-166.8 26-160 30-one hundred eighty 5000-4980
ERF-300-V 650-980 -9.eight- -forty nine ninety seven-192 29-178 37-two hundred 5000-4980
ERF-350-V 650-980 -9.eight- -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 -nine.8- -49 163-231 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- -49 224.eight-326.nine fifty eight-303 75-355 9900-10130
ERG-450V 590-730 -9.eight- -49 255-365 64-335 75-400 11230-11300
ERG-500V 590-730 -9.8- -forty nine 314-452 78-412 132-450 13630-13850
ERF-245W 650-980 -13.three- -53.3 53.5-one zero one 21.five-102 30-110 3630-3360
ERF-250W 650-980 -13.3- -fifty three.3 sixty nine-127 26.five-127 thirty-a hundred and sixty 3985-4115
ERF-290W 650-980 -13.3- -53.three eighty two.six-a hundred and fifty thirty.five-149 37-185 4340-4580
ERF-295W 650-980 -thirteen.3- -fifty three.3 87-158 32-158 37-185 4440-4580
ERF-297W 650-980 -13.3- -53.3 95-174 36-174 45-200 5230-5130
ERF-300W 650-980 -thirteen.three- -fifty three.3 109-195 40-193 55-220 5230-5130
ERF-350W 650-980 -thirteen.three- -fifty three.3 129-230 fifty-230 75-250 5840-5670
ERG-300W 590-730 -13.3- -fifty three.three 142-197 52-201 seventy five-220 9100-9000
ERF-350W 590-730 -13.three- -53.3 168-234.4 fifty nine-235.5 75-280 9500-9600
ERG-400W 590-730 -thirteen.three- -53.3 220-276.six seventy one-292 ninety-315 9900-10130
ERG-445W 590-730 -thirteen.3- -fifty three.3 244-294.6 82-331 ninety-400 11230-11300
ERG450W 590-730 -13.3- -fifty three.3 275-368.five ninety one-366 one hundred ten-400 11230-11300
650-980 98-196 64.8-112 a hundred thirty five-355 160-four hundred 8700-8600
650-980 98-196 eighty.8-139 167-439 185-five hundred 9200-9100
650-980 ninety eight-176.4 102-174 206-497 250-560 10320-10500
650-980 98-137.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.three–eighty seventy two-121 75.6-121 ninety-one hundred sixty 6100-6470
650-980 -fifty three.three–80 93.8-154 ninety nine.5-186 110-220 7000-6400
650-980 -53.three–eighty 116-189 one hundred fifteen-220 132-250 7750-7760
EL81WD 580-980 9.eight-58.eight 54.2-a hundred thirty 18-151 forty five-185 3595
EL82WDB 580-980 nine.eight-fifty eight.8 72.8-161 22-191 forty five-220 3860
EL83WDA 580-980 9.8-fifty eight.nine 101-213 28.5-202 45-220 4300
EL84WDA 580-980 nine.8-fifty eight.8 129-267 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 9.eight-forty nine 263-373 sixty four-353 seventy five-400 8130
EL95WDA 490-580 9.eight-fifty eight.eight 308-434 81.4-414 90-450 11500
EL96WDA 580 58.8 381 497 560 11500
E397WN a thousand-1650 40 five-9      
E408WN 870-1650 40 ten-22      
E517WN 980-1580 forty 20-30      
E520WN 930-1550 forty 24-45      
E607WN 750-1250 40 45-seventy six      
E610WN 750-1250 forty 75-a hundred thirty      

Spare elements and structure of our roots blower:

Bundle of our Roots Blower

Pack into iron case, two layer,blower body and motor in decrease layer, inlet/out silencer etc in higher layer

Roots blower pack strategy same as iron circumstance, just alter to Fumigation Free of charge Plywood Circumstance

Our manufacturing facility is a skilled company of Roots blowers which has above 20 years’ experience in equipment
manufacturing. It is located in Xihu (West Lake) Dis. CZPT CZPT Park, 50 kilometers to the east of ZheJiang provincial
money— HangZhou. Our organization also has hassle-free targeted traffic transportation, as it is fifteen kilometers away from
Diaozhen Town station of HangZhou-HangZhou expressway, and thirty kilometers away from CZPT HangZhou station of
ZheJiang -ZheJiang expressway.The top item of our company is ESR -type Roots Blower. The roots
vacuum pump is a new type of higher-effectiveness roots blower, which is designed independently dependent on the
domestic and overseas sophisticated systems. Many patented technologies have been adopted on Roots
Blower, and as a result we have produced significant outcomes in power conservation and noise reduction, and many others.. So considerably, our
organization has invested far more than thirty,000,000 RMB to introduce these kinds of advanced skilled tools as
horizontal machining centre, vertical machining heart, two-way CNC area planer, CNC lathe, CNC milling
equipment, CNC planer, aircraft grinder, cylindrical grinding machine, and 3 coordinates screening equipment.
In addition to, we have taken different actions to CZPTize the method movement these kinds of as doing work and cooperating
with a lot of scientific research units, colleges and universities at house and overseas. We also continuously consider to
take up and enhance the domestic innovative generation technologies, so as to promote the upgrading and
optimization of the merchandise and make the item high quality get to the advanced degree at house and abroad.
ESR -type Roots Blower contains several sequence these kinds of as 3-leaves Kind, Two-leaves Variety and Centrifugal
Kind,which can be more divided to hundreds of types. The goods are commonly utilised in sewage treatment,
pneumatic conveying,vacuum packaging, aquaculture, food processing, electrical electricity, petrochemical, cement,
mining and other industries. Our products have these kinds of positive aspects as lower sounds, energy saving, stable good quality,
and extended support life, etc.. With the revenue outlets throughout the domestic capital metropolitan areas, our merchandise sell effectively all
over the country, and have been exported to North CZPTica,Russia, Malaysia, Indonesia, Vietnam, South Africa
and some other nations. Getting acquired the ISO9001 CZPT CZPT Method Certification, we have
set up and enhanced the top quality assurance of the merchandise planning, manufacturing, and set up.
From the approach of layout, research and advancement to the concluded products, we have obtained the complete
method managed independently, therefore delivering the total basis and dependability assure for the goods balance
and longevity. Possessing a perfect sales community and following-sales provider, we provide our customers with increased-
good quality and more effective support.All staff of our organization sincerely welcome the broad masses of friends to
information, and negotiate business with us.

Our Roots Blower Workshop

         Doosn Horzitonal CZPT Center

The Application of the Roots Blower

Upkeep and inspection
(1) Check out all fasteners and locating pins situations regardless of whether they are loosening.
(two) Usually verify whether or not the leakage phenomenon of the physique.
(three) Spend consideration to lubrication, volume of grease and noises when running,
determine no matter whether it performs underneath the essential problems.
(4) CZPT & grease: The lubricant is for medium load industrial gear oil
(grade 220, kinematic viscosity of 198 ~ 242mm2 / s 40ºC, flash point ≥ 200ºC)
The grease is butter (synthetic lithium grease penetration 220-250, drop level ≥
190ºC). Replace the lubricant and grease after initial two hundred hours working, and replace
yet again right after a moth operating. Afterwards, change the lubricant and grease in accordance to the
atmosphere and lubricant (grease) high quality suggest a suitable substitute for a few
(5) Always verify the inlet air filter, thoroughly clean or replace the filter in time.
(6) Blower overload sometimes not immediately exhibited, so pay out focus to
the ingestion and exhaust stress, bearing temperature and the current improve developments
of motor to determine whether or not the blower works usually
(7) Just before disassembling the blower, the assembling relation and proportions
must be recorded or calculated, make marks on components to guarantee the CZPT
requirements following assembling.
(8) When freshly equipment or overhaul, the oil tank must be cleaned before use
and suggest substitute all grease right after 8 hours working.

Widespread failure explanation and troubleshooting

No Failure Feasible factors Elimination approaches
one Friction
between the
(1) Impurities on the impeller,
ensuing in the hole is too small
(2) Gear use, ensuing in a
massive backlash
(3) The equipment is not nicely mounted,
can not maintain the impeller
(4) Bearing dress in ensuing in
clearance growing.
(1) Remove dust and check out
whether there is damage parts
(2) Change the gear hole, replace
the gears if the gear backlash is
greater than the regular 30% to
(3)Re-assemble the gears, preserve
the taper make contact with region is to seventy five%
(4)Change the bearing
two Collision
impeller and
wall, the
impeller prime
and casing
(1) Installation gap is not correct
(2) working pressure is way too
higher, exceeding the specified
(three) Operating temperature is also high
(4) Casing or foundation deformation,
positioning admirer failure
(five) Bearing axial spot is not good
(1) Alter the gap
(2) Discover leads to of
overloading, reduced the stress
to the specified benefit
(three) Check out the set up
accuracy and reduce the pipe
(four) Verify and restore bearings,
and to guarantee the clearance
three Temperature
way too substantial
(one) Oil in tank is as well significantly, also
thick or too soiled
(2) CZPT or silencer is blocked
(three)The stress is increased than
the specified worth
(4)Excessive put on of the
impeller, huge gap
(five)Very poor air flow, indoor
temperature is high, ensuing in
inlet air’s large temperature
(6) The rotating pace is also minimal,result in the belt slipping.
(one)Minimize the oil degree or count on
(2)Eliminate of blocking objects
(3)Minimizing the strain through
the blower
(4)Mend its clearance
(five)Open up vents to minimize place
(six) Increase speed to stop the
belt slipping.
4 Insufficient
(1) The inlet filter is blocked
(2) Impeller use and the hole
will increase too a lot
(three) Belt slipping
(four) Large imports force loss
(five) CZPT ventilation leakage
(1) Cleanse the filter dust and
(2) Mend the gap
(3)Tighten the belt and improve
the number of belts
(four)Change the inlet pressure to the
specified benefit
(5) Verify and mend the pipeline
five Oil leaking or
oil leaking
into the enclosure
(1)Higher tank situation result in
leakage from the discharge port
(2) Seal put on, ensuing in shaft oil spills
(three) The pressure is higher than
the specified price

(1)Minimize the oil level
(two)Replace the seals
(3)Obvious the air vents, 2mm diameter faucet is fixed in the
center chamber, open up the faucet
beneath the wall
six Irregular
vibration and
(1)Bearing clearance exceeds the
specified value or bearing dress in
(2) The gear backlash is as well
large, not in a restricted set
(3) The foreign 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,
(5) Friction amongst the impeller
and the inlet housing caused by
(6) Unbalance of the impeller
induced by fouling or international
(7) CZPT bolts or other
fasteners are loosened
(1)Substitute bearings or bearing
(two)Reassemble gear and make sure
(three)Cleaning blower, check out the
case is damaged
(four)Check the back force, verify
the wheel and adjust gap
(five)Verify the filter and back
pressure, enhance the hole
between the impeller inlet and the
(6)Clear the impeller and the
casing, to make sure that the impeller
clearance operate
(7) Tighten the anchor bolts and
leveling the base.
seven Motor
(1)When compared with the necessary
force, the stress big difference
is big that the again strain or
the inlet force is large
(two) When compared with the
tools requirements, blower
flow is way too big, so its force
(3)Inlet filter is blocked, or outlet
pipe is obstructed or blocked
(4) Collusion or friction (trapped)
rotating elements
(five) The oil stage is way too high
(6) Slender V-belt is overheat,
vibration is also big, or pulley
is also small
(1) Minimize the pressure to the
specified benefit
(two) Exhaust the excessive fuel into
the atmosphere or decrease the
blower velocity
(three) Take away the obstructions
(four)Immediately shut down, examine
the explanation
(5) Adjust the oil to the appropriate
(six) Verify the belt stress, and
replaced it with big diameter

Our Service

one. Pre market service                                                                              2. Following market service                                          
a. advise the suitable model                                             c. on-line specialized support,                                                                                   
b. manufacturing facility tour                                                                              d. whole lifestyle spare areas and techinical assistance


12 months gurantee for our roots blowers

Single Oil Case Roots Blower for Fishiery, Pheumatic


Vacuum Pump

As one of the vacuum pump manufacturers, suppliers, and exporters of mechanical products, We offer vacuum pumps and many other products.

Please get in touch with us for details.

Manufacturer supplier exporter of the vacuum pump.

Recent Posts