We – EPG Team the largest couplings and gears manufacturing unit in China with 5 diverse branches. For a lot more details: Cellular/whatsapp/telegram/Kakao us at: 0086-13083988828 /
We make all types of roots blower, centrifugal blower, Our Principal items are as below:
Sort | Diameter | Fee of circulation | Strain |
ESR-MJ(Intensive Kind) | Φ50~Φ300mm | .5~140m³/min | 9.8KPa~ninety eight.8Kpa |
ESR(Normal Type) | Φ50~Φ350mm | .5~140m³/min | 9.8KPa~78.4Kpa |
ESR-H(Higher-force Variety) | Φ50~Φ350mm | .7~160m³/min | 58.8KPa~98.8Kpa |
ESR-V(Vacuum Pump) | Φ50~Φ350mm | .5~160m³/min | nine.8KPa~53.3Kpa |
EL Collection | Φ200~Φ600mm | twenty.3~750m³/min | 9.8KPa~fifty eight.8Kpa |
Multistage Centrifugal Blower or C-Collection |
Φ250~Φ500mm | fifty~500m³/min | nine.8KPa~98Kpa |
ERR-ERG Sort | Φ250~Φ500mm | a hundred and twenty~420m³/min | nine.8KPa~ninety eight.8Kpa |
The doing work theory of the three-blade roots blower: two three-lobed rotors are organized in the cavity, and the
suction port and the discharge port are opened on both sides of the cavity. By way of the motion of a pair of
synchronous gears, the two rotors rotate in opposite 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
function of blowing.
Attribute of our roots blower:
one. Huge adjustment of the air quantity
2. Reduced Sound
three. Substantial efficiency
4. Lower vitality cosumption
5. Long time life
6. Reputable working, straightforward upkeep,small footprint
The parameters of our roots blower:
Variety | Ratary Speed (r/min) |
Pressure Increase (Kpa) |
Potential (m/min) |
Shaft Electricity (Kw) |
Motor | Device Maximn Bodyweight(Kg) |
Energy (Kw) |
||||||
ESR-fifty | 1100-2120 | nine.eight-58.eight | .65-2.58 | .three-3.fifty four | .75-4 | 128-158 |
ESR-65 | 1100-2130 | nine.eight-58.eight | .ninety four-3.66 | .38-4.46 | .seventy five-5.five | a hundred and fifty five-185 |
ESR-eighty | 1140-1900 | 9.eight-58.eight | 2.34-5.43 | one.04-seven.forty two | two.two-11 | one hundred fifty five-277 |
ESR-a hundred | 1060-1980 | 9.eight-fifty eight.eight | four.fifty seven-nine.05 | 1.35-12.fifteen | three-fifteen | 309-377 |
ESR-a hundred twenty five | 980-1850 | nine.8-fifty eight.8 | 5.35-12.4 | one.65-five.19 | 5.five-eighteen.five | 408-451 |
ESR-125C | 970-1830 | 9.8-58.eight | seven.five-seventeen.57 | three.2-eighteen.5 | four-22 | 408-451 |
ESR-150 | 810-1730 | 9.eight-58.eight | 10.37-27.fifteen | three.84-forty.82 | 7.five-45 | 688-848 |
ESR-175 | 970-1520 | 9.8-58.8 | 19.65-36.65 | 7.2-45.95 | eleven-55 | 980-1080 |
ESR-200B | 740-1450 | nine.eight-58.8 | 19.65-forty four.eight | ten.15-60.44 | fifteen-seventy five | 1272-1546 |
ESR-two hundred | 810-1480 | nine.8-58.eight | 27.65-fifty nine.two | eight.05-eighty,12 | fifteen-90 | 1272-1546 |
ESR-250B | 1100-1480 | 9.eight-fifty eight.eight | fifty four.77-77.fifty five | 19.ninety seven-ninety.ninety seven | thirty-a hundred and ten | 1490-2454 |
ESR-250 | 990-1480 | nine.8-58.eight | sixty one.four-ninety seven.52 | twenty.1-117.3 | 30-132 | 1490-2454 |
ESR-300 | 990-1480 | 9.eight-fifty eight.eight | 87.1-138.one | 26.four-167.8 | 37-185 | 3326-3446 |
ESR-350 | 730-1480 | 9.8-fifty eight.8 | 78.41-177.31 | fifty five-250 | ||
ESR-50H | 1230-2120 | sixty three.7-ninety eight | .forty five-two.02 | two.05-6.twelve | 3-seven.5 | 160–170 |
ESR-65H | 1240-2130 | sixty three.seven-ninety eight | .seventy eight-2.fifty three | two.89-seven.fifty five | 4-11 | 198-230 |
ESR-80H | 1140-1900 | 63.seven-ninety eight | one.eighty two-4.55 | four.09-10.1 | five.five-15 | 316-326 |
ESR-100H | 1060-1980 | sixty three.7-98 | 2.65-8.06 | 6.36-17.two | 7.5-22 | 398-459 |
ESR-125H | 980-1850 | sixty three.7-98 | 4.sixty four-11.23 | 8.ninety two-24.two | eleven-thirty | 544-630 |
ESR-150H | 810-1730 | 63.seven-98 | nine.53-twenty five.76 | seventeen.sixteen-sixty five | eighteen.five-75 | 752-1571 |
ESR-200H | 810-1480 | sixty three.7-98 | twenty five.34-56.92 | forty two.34-120 | fifty five-132 | 1426-1934 |
ESR-250H | 990-1480 | 63.seven-98 | fifty eight-93.seven | eighty three.two-205 | 90-220 | 2980-3468 |
ESR300H | 990-1480 | 63.7-ninety eight | 86.9-134.1 | 114.7-270 | 132-280 | 3476-3998 |
ERF-245 | 650-980 | 9.eight-98 | 47.5-ninety seven.4 | sixteen-183 | eighteen.five-200 | 3630-3690 |
ERF-250 | 650-980 | 9.eight-ninety eight | 61.six-120.4 | 19-227 | 22-250 | 4450-4500 |
ERF-290 | 650-980 | 9.eight-seventy eight.four | ninety two.3-128 | 22-213 | thirty-250 | 4890-4710 |
ERF-295 | 650-980 | nine.8-78.four | ninety seven.3-152.5 | 23-227 | thirty-250 | 4890-4880 |
ERF-297 | 650-980 | nine.eight-78.4 | 87.5-167.6 | 26-249 | thirty-280 | 5330-5520 |
ERF-three hundred | 650-980 | 9.eight-seventy eight.4 | one hundred and one.five-188.seven | 29-278 | 37-315 | 5330-5520 |
ERF-350 | 650-980 | nine.8-seventy eight.4 | 126-224.9 | 34-249 | forty five-280 | 5210-6470 |
ERG-300 | 590-730 | 9.8-98 | 128.three-196 | 38-362 | forty five-400 | 9440-15710 |
ERG-350 | 590-730 | nine.eight-ninety eight | 159.three-231.6 | forty three-420 | fifty five-450 | 9700-1571 |
ERG-400 | 590-730 | 9.8-eighty three.3 | 203.one-290.9 | fifty two-449 | 75-500 | 10090-11390 |
ERG-445 | 590-730 | 9.eight-seventy three.5 | 229.7-327.eight | 58-477 | seventy five-560 | 10600-12230 |
ERG-450 | 590-730 | nine.eight-73.5 | 262.four-366.2 | sixty four-496 | seventy five-560 | 10600-12230 |
ERG-500 | 590-730 | 9.8-63.7 | 327.4-452.4 | seventy eight-529 | ninety-560 | 12790-14620 |
ERF-240-V | 650-980 | -9.eight- -forty nine | 38.one-78 | thirteen-76 | eighteen.5-90 | 3420-3285 |
ERF-245-V | 650-980 | -9.8- -49 | 47.five-97.4 | 16-ninety five | 22-one hundred ten | 3425-3360 |
ERF-250-V | 650-980 | -9.eight- -forty nine | sixty three-120 | 19-117 | 22-132 | 3910-3830 |
ERF-290-V | 650-980 | -9.8- -49 | 72.6-a hundred and forty four | 22-136 | thirty-160 | 4415-4270 |
ERF-295-V | 650-980 | -nine.eight- -forty nine | seventy six.six-152 | 23-one hundred forty five | thirty-one hundred sixty | 4425-4485 |
ERF-297-V | 650-980 | -nine.eight- -49 | eighty four.three-166.eight | 26-a hundred and sixty | 30-one hundred eighty | 5000-4980 |
ERF-three hundred-V | 650-980 | -nine.eight- -forty nine | ninety seven-192 | 29-178 | 37-two hundred | 5000-4980 |
ERF-350-V | 650-980 | -9.8- -49 | 116-225 | 34-209 | forty five-250 | 5400-5700 |
ERG-300V | 590-730 | -nine.eight- -49 | 133-193 | 38-184 | 45-220 | 7800-9100 |
ERG-350V | 590-730 | -nine.8- -forty nine | 163-231 | forty three-216 | fifty five-250 | 9500-9470 |
ERG-400V | 590-730 | -9.8- -forty nine | 199-290 | fifty two-269 | seventy five-315 | 9900-10130 |
ERG-445V | 590-730 | -9.8- -49 | 224.eight-326.9 | fifty eight-303 | 75-355 | 9900-10130 |
ERG-450V | 590-730 | -9.8- -forty nine | 255-365 | sixty four-335 | seventy five-400 | 11230-11300 |
ERG-500V | 590-730 | -nine.eight- -forty nine | 314-452 | 78-412 | 132-450 | 13630-13850 |
ERF-245W | 650-980 | -13.three- -fifty three.three | 53.5-one hundred and one | 21.5-102 | thirty-110 | 3630-3360 |
ERF-250W | 650-980 | -13.3- -fifty three.3 | sixty nine-127 | 26.5-127 | 30-one hundred sixty | 3985-4115 |
ERF-290W | 650-980 | -13.3- -fifty three.3 | 82.6-a hundred and fifty | 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- -53.3 | 95-174 | 36-174 | 45-two hundred | 5230-5130 |
ERF-300W | 650-980 | -thirteen.three- -53.3 | 109-195 | 40-193 | 55-220 | 5230-5130 |
ERF-350W | 650-980 | -thirteen.3- -fifty three.three | 129-230 | 50-230 | 75-250 | 5840-5670 |
ERG-300W | 590-730 | -13.3- -53.3 | 142-197 | fifty two-201 | seventy five-220 | 9100-9000 |
ERF-350W | 590-730 | -13.3- -53.three | 168-234.4 | fifty nine-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.3- -fifty three.three | 244-294.six | eighty two-331 | ninety-400 | 11230-11300 |
ERG450W | 590-730 | -thirteen.three- -53.three | 275-368.5 | ninety one-366 | 110-400 | 11230-11300 |
ETRF-250 (240,250) |
650-980 | 98-196 | sixty four.eight-112 | a hundred thirty five-355 | a hundred and sixty-400 | 8700-8600 |
ETRF-295 (245,295) |
650-980 | 98-196 | eighty.8-139 | 167-439 | 185-500 | 9200-9100 |
ETRF-300 (245,295) |
650-980 | 98-176.4 | 102-174 | 206-497 | 250-560 | 10320-10500 |
ETRF-350 (245,295) |
650-980 | 98-137.2 | 124-207 | 241-473 | 280-560 | 10700-11110 |
ETRG-four hundred (three hundred,400) |
590-740 | ninety eight-176.4 | 205-273 | 380-773 | 450-900 | 21350-24200 |
ETRG-450 (350,450) |
590-740 | ninety eight-176.four | 263-428 | 476-955 | 560-a thousand | 24200-27600 |
ETRF-250W (240,250) |
650-980 | -53.3–eighty | 72-121 | 75.6-121 | 90-one hundred sixty | 6100-6470 |
ETRF-295W (245/295) |
650-980 | -53.3–eighty | ninety three.8-154 | ninety nine.5-186 | 110-220 | 7000-6400 |
ETRF-300W (2505/300) |
650-980 | -fifty three.3–80 | 116-189 | 115-220 | 132-250 | 7750-7760 |
EL81WD | 580-980 | nine.eight-58.eight | fifty four.two-130 | 18-151 | 45-185 | 3595 |
EL82WDB | 580-980 | nine.eight-fifty eight.eight | seventy two.8-161 | 22-191 | 45-220 | 3860 |
EL83WDA | 580-980 | nine.8-fifty eight.9 | one hundred and one-213 | 28.five-202 | 45-220 | 4300 |
EL84WDA | 580-980 | 9.8-fifty eight.eight | 129-267 | 35.4-252 | forty five-280 | 4720 |
EL93WDA | 580-730 | 9.eight-forty nine | 230-329 | 56.four-311 | seventy five-355 | 7765 |
EL94WDA | 580-730 | nine.eight-49 | 263-373 | sixty four-353 | 75-four hundred | 8130 |
EL95WDA | 490-580 | 9.eight-fifty eight.8 | 308-434 | eighty one.4-414 | ninety-450 | 11500 |
EL96WDA | 580 | 58.eight | 381 | 497 | 560 | 11500 |
E397WN | 1000-1650 | forty | five-nine | |||
E408WN | 870-1650 | forty | 10-22 | |||
E517WN | 980-1580 | forty | 20-thirty | |||
E520WN | 930-1550 | 40 | 24-forty five | |||
E607WN | 750-1250 | 40 | forty five-seventy six | |||
E610WN | 750-1250 | 40 | 75-a hundred thirty |
Spare parts and framework of our roots blower:
Deal of our Roots Blower
Pack into iron situation, two layer,blower body and motor in reduced layer, inlet/out silencer and many others in higher layer
Roots blower pack technique identical as iron case, just alter to Fumigation Totally free Plywood Situation
Our manufacturing unit is a skilled manufacturer of Roots blowers which has more than 20 years’ experience in equipment
manufacturing. It is positioned in Xihu (West Lake) Dis. East Industrial Park, 50 kilometers to the east of Shan EPT provincial
cash— HangZhou. Our company also has hassle-free site visitors transportation, as it is fifteen kilometers absent from
Diaozhen City station of HangZhou-HangZhou expressway, and 30 kilometers absent from East HangZhou station of
ZheJiang -ZheJiang expressway.The major item of our organization is ESR -sort Roots Blower. The roots
vacuum pump is a new variety of high-effectiveness roots blower, which is designed independently primarily based on the
domestic and international superior technologies. Several patented technologies have been adopted on Roots
Blower, and therefore we have produced important consequences in energy conservation and noise reduction, and so forth.. So much, our
company has invested far more than thirty,000,000 RMB to introduce this kind of advanced professional tools as
horizontal machining center, vertical machining center, two-way CNC surface planer, CNC lathe, CNC milling
machine, CNC planer, aircraft grinder, cylindrical grinding equipment, and three coordinates screening device.
In addition to, we have taken a variety of actions to standardize the method movement these kinds of as working and cooperating
with numerous scientific research units, schools and universities at property and overseas. We also continually consider to
absorb and improve the domestic advanced generation technologies, so as to advertise the upgrading and
optimization of the merchandise and make the solution quality get to the innovative degree at home and abroad.
ESR -type Roots Blower contains several series these kinds of as A few-leaves Kind, Two-leaves Variety and Centrifugal
Kind,which can be additional divided to hundreds of varieties. The products are commonly utilised in sewage remedy,
pneumatic conveying,vacuum packaging, aquaculture, foodstuff processing, EPT electrical power, petrochemical, cement,
mining and other industries. Our goods have this sort of positive aspects as lower noise, energy saving, steady good quality,
and long service life, and so forth.. With the product sales outlets throughout the domestic capital metropolitan areas, our goods offer well all
in excess of the nation, and have been exported to North America,Russia, Malaysia, Indonesia, Vietnam, South Africa
and some other international locations. Getting got the ISO9001 Intercontinental Top quality System Certification, we have
proven and improved the quality assurance of the items designing, producing, and installation.
From the approach of layout, study and development to the finished goods, we have got the entire
process managed independently, thus offering the entire foundation and dependability assure for the items security
and longevity. Having a perfect product sales network and following-product sales provider, we provide our clients with increased-
high quality and far more efficient service.All employees of our firm sincerely welcome the wide masses of pals to
guide, and negotiate company with us.
Our Roots Blower Workshop
Doosn Horzitonal Machine Centre
The Application of the Roots Blower
Maintenance and inspection
(1) Check all fasteners and finding pins situations regardless of whether they are loosening.
(two) Often verify regardless of whether the leakage phenomenon of the physique.
(3) Pay consideration to lubrication, amount of grease and noises when operating,
figure out regardless of whether it functions underneath the needed circumstances.
(4) Lubricant & grease: The lubricant is for medium load industrial gear oil
(grade 220, kinematic viscosity of 198 ~ 242mm2 / s 40ºC, flash stage ≥ 200ºC)
The grease is butter (artificial lithium grease penetration 220-250, fall point ≥
190ºC). Exchange the lubricant and grease after 1st 200 several hours managing, and replace
once again following a moth operating. Later, substitute the lubricant and grease according to the
atmosphere and lubricant (grease) quality suggest a appropriate EPT for a few
months.
(5) Always check the inlet air filter, thoroughly clean or exchange the filter in time.
(six) Blower overload occasionally not right away shown, so spend consideration to
the ingestion and exhaust pressure, bearing temperature and the present enhance developments
of motor to decide no matter whether the blower operates normally
(seven) Just before disassembling the blower, the assembling relation and dimensions
should be recorded or calculated, make marks on parts to make certain the unique
requirements right after assembling.
(8) When newly equipment or overhaul, the oil tank ought to be cleaned ahead of use
and suggest exchange all grease following 8 several hours working.
Typical failure purpose and troubleshooting
No | Failure | Possible causes | Elimination approaches |
one | Friction between the impeller |
(1) Impurities on the impeller, ensuing in the gap is too little (two) Gear put on, resulting in a big backlash (3) The equipment is not effectively mounted, can not preserve the impeller synchronization (four) Bearing use ensuing in clearance rising. |
(1) Remove dirt and verify regardless of whether there is damage parts (2) Change the gear gap, substitute the gears if the equipment backlash is better than the common 30% to 50% (three)Re-assemble the gears, hold the taper make contact with location is to 75% (4)Exchange the bearing |
two | Collision in between impeller and wall, the impeller prime and casing |
(one) Installation hole is not proper (two) running force is too high, exceeding the specified price (three) Working temperature is too large (four) Casing or base deformation, positioning supporter failure (five) Bearing axial spot is not excellent |
(one) Adjust the gap (2) Recognize leads to of overloading, lowered the stress to the specified price (three) Check out the installation precision and reduce the pipe stress (4) Check out and fix bearings, and to make certain the clearance (5)Relocation |
three | Temperature way too substantial |
(one) Oil in tank is also considerably, too thick or too dirty (two) Filter or silencer is blocked (3)The force is higher than the specified worth (4)Excessive dress in of the impeller, huge hole (five)Inadequate ventilation, indoor temperature is higher, ensuing in inlet air’s substantial temperature (6) The rotating velocity is as well lower,end result in the belt slipping. |
(one)Reduce the oil degree or depend on oil (2)Get rid of of blocking objects (3)Minimizing the strain by means of the blower (4)Repair its clearance (5)Open vents to decrease space temperature (6) Boost pace to avoid the belt slipping. |
four | Insufficient movement |
(1) The inlet filter is blocked (two) Impeller use and the hole will increase also considerably (three) Belt slipping (4) Huge imports pressure loss (five) Pipeline ventilation leakage |
(1) Clean the filter dust and obstruction (two) Fix the hole (3)Tighten the belt and enhance the number of belts (4)Adjust the inlet pressure to the specified value (5) Check out and fix the pipeline |
5 | Oil leaking or oil leaking into the enclosure |
(one)Higher tank position cause leakage from the discharge port (two) Seal put on, ensuing in shaft oil spills (three) The strain is increased than the specified worth |
(1)Reduce the oil amount (two)Substitute the seals (three)Obvious the air vents, 2mm diameter faucet is fixed in the middle chamber, open the faucet under the wall |
6 | Irregular vibration and sounds |
(one)Bearing clearance exceeds the specified benefit or bearing dress in (two) The equipment backlash is way too massive, not in a restricted fixed (3) The international objects and dust triggered by the impeller and the impeller, the impeller and the housing collision (4) the impeller shaft deformation caused the collision triggered by overload, (5) Friction amongst the impeller and the inlet housing induced by overheating (6) Unbalance of the impeller induced by fouling or international entire body (7) Anchor bolts or other fasteners are loosened |
(1)Change bearings or bearing seat (2)Reassemble gear and guarantee backlash (3)Cleansing blower, check out the case is damaged (4)Verify the back again stress, verify the wheel and change hole (five)Examine the filter and back again strain, increase the gap between the impeller inlet and the casing (6)Thoroughly clean the impeller and the casing, to make certain that the impeller clearance perform (7) Tighten the anchor bolts and leveling the foundation. |
seven | Motor overload |
(1)In contrast with the necessary stress, the force difference is huge that the back pressure or the inlet force is substantial (two) In contrast with the gear specifications, blower stream is also massive, so its strain increases (3)Inlet filter is blocked, or outlet pipe is obstructed or blocked (4) Collusion or friction (trapped) rotating elements (5) The oil amount is too higher (six) Slim V-belt is overheat, vibration is too big, or pulley is way too tiny |
(1) Reduce the force to the specified price (two) Exhaust the surplus gas into the environment or decrease the blower velocity (three) Remove the obstructions (4)Quickly shut down, check the purpose (five) Adjust the oil to the correct degree (six) Examine the belt rigidity, and replaced it with massive diameter pulley. |
Our Services
one. Pre sell service 2. After promote service
a. suggest the suited model c. on the internet specialized assistance,
b. factory tour d. whole life spare parts and techinical assist
Gurantee
twelve months gurantee for our roots blowers
/ The use of original gear manufacturer’s (OEM) part figures or emblems , e.g. CASE® and John Deere® are for reference purposes only and for indicating merchandise use and compatibility. Our company and the listed EPT parts contained herein are not sponsored, accredited, or made by the OEM. /