We – EPG Group the most significant couplings and gears factory in China with 5 distinct branches. For far more information: Cell/whatsapp/telegram/Kakao us at: 0086-13083988828 /
We make all sorts of roots blower, centrifugal blower, Our Main products are as underneath:
Kind | Diameter | Price of flow | Stress |
ESR-MJ(Intense Variety) | Φ50~Φ300mm | .5~140m³/min | 9.8KPa~98.8Kpa |
ESR(Ordinary Type) | Φ50~Φ350mm | .five~140m³/min | 9.8KPa~seventy eight.4Kpa |
ESR-H(Higher-pressure Kind) | Φ50~Φ350mm | .seven~160m³/min | fifty eight.8KPa~ninety eight.8Kpa |
ESR-V(Vacuum Pump) | Φ50~Φ350mm | .five~160m³/min | 9.8KPa~53.3Kpa |
EL Sequence | Φ200~Φ600mm | 20.3~750m³/min | 9.8KPa~fifty eight.8Kpa |
Multistage Centrifugal Blower or C-Series |
Φ250~Φ500mm | fifty~500m³/min | nine.8KPa~98Kpa |
ERR-ERG Sort | Φ250~Φ500mm | 120~420m³/min | 9.8KPa~98.8Kpa |
The functioning principle of the 3-blade roots blower: two three-lobed rotors are organized in the cavity, and the
suction port and the discharge port are opened on each sides of the cavity. By way of 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
purpose of blowing.
Feature of our roots blower:
1. Large adjustment of the air quantity
two. Lower Sound
3. Substantial efficiency
four. Lower strength cosumption
five. Lengthy time existence
six. Trustworthy managing, straightforward servicing,tiny footprint
The parameters of our roots blower:
Type | Ratary Pace (r/min) |
Force Increase (Kpa) |
Ability (m/min) |
Shaft Electricity (Kw) |
Motor | Unit Maximn Fat(Kg) |
Electrical power (Kw) |
||||||
ESR-50 | 1100-2120 | nine.eight-58.eight | .sixty five-two.fifty eight | .three-3.fifty four | .75-4 | 128-158 |
ESR-65 | 1100-2130 | 9.eight-58.8 | .94-3.sixty six | .38-four.forty six | .75-five.five | a hundred and fifty five-185 |
ESR-eighty | 1140-1900 | 9.8-fifty eight.8 | 2.34-five.43 | 1.04-7.forty two | two.two-11 | a hundred and fifty five-277 |
ESR-100 | 1060-1980 | nine.eight-fifty eight.8 | 4.57-nine.05 | one.35-twelve.15 | three-15 | 309-377 |
ESR-a hundred twenty five | 980-1850 | 9.eight-fifty eight.eight | 5.35-12.4 | one.65-5.19 | 5.5-18.five | 408-451 |
ESR-125C | 970-1830 | nine.eight-fifty eight.8 | seven.5-17.57 | 3.two-eighteen.5 | 4-22 | 408-451 |
ESR-a hundred and fifty | 810-1730 | 9.eight-fifty eight.eight | 10.37-27.15 | 3.84-forty.eighty two | 7.5-45 | 688-848 |
ESR-a hundred seventy five | 970-1520 | 9.eight-58.eight | 19.sixty five-36.65 | 7.2-forty five.95 | eleven-55 | 980-1080 |
ESR-200B | 740-1450 | 9.eight-fifty eight.eight | 19.65-44.eight | 10.15-sixty.44 | 15-seventy five | 1272-1546 |
ESR-200 | 810-1480 | nine.eight-58.eight | 27.sixty five-fifty nine.2 | eight.05-eighty,12 | 15-90 | 1272-1546 |
ESR-250B | 1100-1480 | nine.8-fifty eight.8 | 54.77-77.55 | 19.ninety seven-ninety.97 | 30-a hundred and ten | 1490-2454 |
ESR-250 | 990-1480 | nine.eight-fifty eight.8 | 61.4-ninety seven.fifty two | 20.1-117.three | thirty-132 | 1490-2454 |
ESR-300 | 990-1480 | 9.eight-58.8 | 87.1-138.one | 26.4-167.8 | 37-185 | 3326-3446 |
ESR-350 | 730-1480 | 9.eight-58.8 | 78.forty one-177.31 | fifty five-250 | ||
ESR-50H | 1230-2120 | sixty three.seven-98 | .forty five-2.02 | 2.05-6.12 | 3-7.5 | one hundred sixty–a hundred and seventy |
ESR-65H | 1240-2130 | sixty three.7-98 | .78-two.53 | two.89-7.55 | four-11 | 198-230 |
ESR-80H | 1140-1900 | sixty three.seven-ninety eight | one.82-4.fifty five | four.09-ten.1 | 5.five-15 | 316-326 |
ESR-100H | 1060-1980 | sixty three.7-ninety eight | two.sixty five-eight.06 | 6.36-17.two | 7.five-22 | 398-459 |
ESR-125H | 980-1850 | 63.7-ninety eight | four.64-eleven.23 | 8.92-24.2 | 11-thirty | 544-630 |
ESR-150H | 810-1730 | sixty three.7-ninety eight | 9.53-twenty five.seventy six | seventeen.sixteen-65 | eighteen.five-seventy five | 752-1571 |
ESR-200H | 810-1480 | 63.7-98 | twenty five.34-56.ninety two | 42.34-120 | fifty five-132 | 1426-1934 |
ESR-250H | 990-1480 | 63.7-98 | fifty eight-93.7 | eighty three.two-205 | 90-220 | 2980-3468 |
ESR300H | 990-1480 | sixty three.7-ninety eight | 86.9-134.one | 114.seven-270 | 132-280 | 3476-3998 |
ERF-245 | 650-980 | nine.8-ninety eight | forty seven.five-97.4 | sixteen-183 | 18.5-two hundred | 3630-3690 |
ERF-250 | 650-980 | 9.8-98 | 61.6-a hundred and twenty.four | 19-227 | 22-250 | 4450-4500 |
ERF-290 | 650-980 | 9.8-78.4 | ninety two.3-128 | 22-213 | thirty-250 | 4890-4710 |
ERF-295 | 650-980 | nine.8-78.4 | 97.3-152.five | 23-227 | 30-250 | 4890-4880 |
ERF-297 | 650-980 | 9.eight-78.four | 87.5-167.6 | 26-249 | 30-280 | 5330-5520 |
ERF-three hundred | 650-980 | 9.eight-seventy eight.four | one zero one.five-188.seven | 29-278 | 37-315 | 5330-5520 |
ERF-350 | 650-980 | nine.8-78.4 | 126-224.nine | 34-249 | forty five-280 | 5210-6470 |
ERG-three hundred | 590-730 | nine.eight-98 | 128.three-196 | 38-362 | 45-400 | 9440-15710 |
ERG-350 | 590-730 | nine.8-98 | 159.3-231.six | 43-420 | fifty five-450 | 9700-1571 |
ERG-four hundred | 590-730 | 9.8-83.3 | 203.one-290.9 | 52-449 | 75-500 | 10090-11390 |
ERG-445 | 590-730 | 9.8-seventy three.five | 229.7-327.8 | fifty eight-477 | 75-560 | 10600-12230 |
ERG-450 | 590-730 | 9.eight-73.five | 262.four-366.two | 64-496 | seventy five-560 | 10600-12230 |
ERG-500 | 590-730 | 9.8-sixty three.seven | 327.4-452.four | seventy eight-529 | 90-560 | 12790-14620 |
ERF-240-V | 650-980 | -nine.8- -forty nine | 38.one-78 | 13-seventy six | eighteen.five-ninety | 3420-3285 |
ERF-245-V | 650-980 | -9.8- -49 | forty seven.five-ninety seven.four | sixteen-95 | 22-one hundred ten | 3425-3360 |
ERF-250-V | 650-980 | -9.eight- -forty nine | sixty three-a hundred and twenty | 19-117 | 22-132 | 3910-3830 |
ERF-290-V | 650-980 | -nine.eight- -forty nine | seventy two.6-144 | 22-136 | 30-160 | 4415-4270 |
ERF-295-V | 650-980 | -nine.8- -49 | seventy six.six-152 | 23-a hundred forty five | 30-a hundred and sixty | 4425-4485 |
ERF-297-V | 650-980 | -9.8- -49 | 84.3-166.8 | 26-a hundred and sixty | 30-180 | 5000-4980 |
ERF-300-V | 650-980 | -9.8- -49 | ninety seven-192 | 29-178 | 37-200 | 5000-4980 |
ERF-350-V | 650-980 | -nine.8- -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.eight- -forty nine | 163-231 | 43-216 | 55-250 | 9500-9470 |
ERG-400V | 590-730 | -nine.8- -forty nine | 199-290 | 52-269 | seventy five-315 | 9900-10130 |
ERG-445V | 590-730 | -9.eight- -forty nine | 224.8-326.9 | 58-303 | seventy five-355 | 9900-10130 |
ERG-450V | 590-730 | -9.8- -49 | 255-365 | 64-335 | seventy five-four hundred | 11230-11300 |
ERG-500V | 590-730 | -nine.eight- -49 | 314-452 | seventy eight-412 | 132-450 | 13630-13850 |
ERF-245W | 650-980 | -thirteen.3- -53.3 | fifty three.5-101 | 21.five-102 | thirty-a hundred and ten | 3630-3360 |
ERF-250W | 650-980 | -13.three- -fifty three.3 | sixty nine-127 | 26.5-127 | thirty-a hundred and sixty | 3985-4115 |
ERF-290W | 650-980 | -thirteen.three- -53.three | 82.6-a hundred and fifty | thirty.five-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.3- -fifty three.3 | ninety five-174 | 36-174 | forty five-two hundred | 5230-5130 |
ERF-300W | 650-980 | -13.3- -fifty three.3 | 109-195 | 40-193 | 55-220 | 5230-5130 |
ERF-350W | 650-980 | -13.3- -53.3 | 129-230 | 50-230 | seventy five-250 | 5840-5670 |
ERG-300W | 590-730 | -13.3- -53.three | 142-197 | fifty two-201 | seventy five-220 | 9100-9000 |
ERF-350W | 590-730 | -thirteen.three- -53.three | 168-234.four | fifty nine-235.5 | seventy five-280 | 9500-9600 |
ERG-400W | 590-730 | -13.3- -53.3 | 220-276.six | seventy one-292 | ninety-315 | 9900-10130 |
ERG-445W | 590-730 | -13.three- -53.3 | 244-294.six | 82-331 | ninety-four hundred | 11230-11300 |
ERG450W | 590-730 | -thirteen.three- -fifty three.3 | 275-368.5 | 91-366 | 110-400 | 11230-11300 |
ETRF-250 (240,250) |
650-980 | ninety eight-196 | 64.8-112 | 135-355 | a hundred and sixty-400 | 8700-8600 |
ETRF-295 (245,295) |
650-980 | ninety eight-196 | eighty.eight-139 | 167-439 | 185-five hundred | 9200-9100 |
ETRF-300 (245,295) |
650-980 | ninety eight-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-400 (300,four hundred) |
590-740 | 98-176.four | 205-273 | 380-773 | 450-900 | 21350-24200 |
ETRG-450 (350,450) |
590-740 | 98-176.four | 263-428 | 476-955 | 560-a thousand | 24200-27600 |
ETRF-250W (240,250) |
650-980 | -53.three–80 | seventy two-121 | seventy five.six-121 | ninety-160 | 6100-6470 |
ETRF-295W (245/295) |
650-980 | -53.3–eighty | ninety three.eight-154 | ninety nine.five-186 | a hundred and ten-220 | 7000-6400 |
ETRF-300W (2505/three hundred) |
650-980 | -53.3–80 | 116-189 | 115-220 | 132-250 | 7750-7760 |
EL81WD | 580-980 | 9.8-58.8 | 54.two-one hundred thirty | eighteen-151 | forty five-185 | 3595 |
EL82WDB | 580-980 | nine.eight-58.8 | seventy two.8-161 | 22-191 | forty five-220 | 3860 |
EL83WDA | 580-980 | 9.8-58.9 | 101-213 | 28.5-202 | forty five-220 | 4300 |
EL84WDA | 580-980 | nine.8-58.8 | 129-267 | 35.4-252 | forty five-280 | 4720 |
EL93WDA | 580-730 | nine.eight-49 | 230-329 | 56.4-311 | seventy five-355 | 7765 |
EL94WDA | 580-730 | nine.8-forty nine | 263-373 | 64-353 | 75-400 | 8130 |
EL95WDA | 490-580 | 9.8-fifty eight.eight | 308-434 | eighty one.four-414 | 90-450 | 11500 |
EL96WDA | 580 | fifty eight.8 | 381 | 497 | 560 | 11500 |
E397WN | one thousand-1650 | 40 | five-9 | |||
E408WN | 870-1650 | 40 | ten-22 | |||
E517WN | 980-1580 | 40 | twenty-30 | |||
E520WN | 930-1550 | 40 | 24-45 | |||
E607WN | 750-1250 | forty | forty five-seventy six | |||
E610WN | 750-1250 | forty | seventy five-one hundred thirty |
Spare components and composition of our roots blower:
Package deal of our Roots Blower
Pack into iron situation, two layer,blower physique and motor in decrease layer, inlet/out silencer and so forth in higher layer
Roots blower pack strategy same as iron situation, just change to Fumigation Cost-free Plywood Case
Our factory is a skilled maker of Roots blowers which has above 20 years’ experience in machinery
producing. It is located in Xihu (West Lake) Dis. East Industrial Park, 50 kilometers to the east of Shan EPT provincial
money— HangZhou. Our business also has hassle-free targeted traffic transportation, as it is fifteen kilometers away from
Diaozhen Town station of HangZhou-HangZhou expressway, and 30 kilometers absent from East HangZhou station of
ZheJiang -ZheJiang expressway.The leading item of our firm is ESR -type Roots Blower. The roots
vacuum pump is a new kind of higher-performance roots blower, which is developed independently based mostly on the
domestic and international superior systems. Many patented technologies have been adopted on Roots
Blower, and hence we have produced substantial effects in vitality conservation and noise reduction, and many others.. So much, our
company has invested far more than thirty,000,000 RMB to introduce such advanced professional equipment as
horizontal machining centre, vertical machining middle, two-way CNC floor planer, CNC lathe, CNC milling
equipment, CNC planer, airplane grinder, cylindrical grinding device, and 3 coordinates testing device.
Aside from, we have taken different steps to standardize the method circulation these kinds of as working and cooperating
with a lot of scientific research units, colleges and universities at house and abroad. We also constantly consider to
take in and increase the domestic advanced creation technologies, so as to encourage the upgrading and
optimization of the item and make the solution high quality get to the sophisticated amount at residence and abroad.
ESR -sort Roots Blower consists of many sequence this kind of as A few-leaves Sort, Two-leaves Variety and Centrifugal
Variety,which can be further divided to hundreds of versions. The products are extensively utilised in sewage treatment method,
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, power preserving, secure high quality,
and extended provider life, etc.. With the product sales outlets throughout the domestic cash cities, our merchandise promote nicely all
more than the region, and have been exported to North The usa,Russia, Malaysia, Indonesia, Vietnam, South Africa
and some other nations. Having obtained the ISO9001 International High quality Program Certification, we have
recognized and improved the high quality assurance of the items creating, production, and set up.
From the process of design, investigation and advancement to the finished merchandise, we have acquired the complete
method managed independently, as a result offering the full foundation and dependability assure for the products balance
and sturdiness. Obtaining a perfect sales network and right after-revenue support, we offer our clients with higher-
good quality and much more productive support.All staff of our firm sincerely welcome the broad masses of friends to
guide, and negotiate business with us.
Our Roots Blower Workshop
Doosn Horzitonal Equipment Heart
The Application of the Roots Blower
Routine maintenance and inspection
(1) Check out all fasteners and finding pins circumstances whether they are loosening.
(two) Often check whether or not the leakage phenomenon of the entire body.
(3) Pay out consideration to lubrication, amount of grease and noises when managing,
decide no matter whether it functions under the needed problems.
(4) Lubricant & grease: The lubricant is for medium load industrial equipment oil
(grade 220, kinematic viscosity of 198 ~ 242mm2 / s 40ºC, flash position ≥ 200ºC)
The grease is butter (artificial lithium grease penetration 220-250, drop position ≥
190ºC). Change the lubricant and grease after 1st two hundred several hours managing, and exchange
once again right after a moth operating. Afterwards, change the lubricant and grease according to the
setting and lubricant (grease) good quality suggest a suitable EPT for three
months.
(5) Constantly verify the inlet air filter, thoroughly clean or change the filter in time.
(6) Blower overload at times not quickly exhibited, so spend consideration to
the consumption and exhaust force, bearing temperature and the present enhance trends
of motor to determine regardless of whether the blower works usually
(7) Prior to disassembling the blower, the assembling relation and dimensions
must be recorded or calculated, make marks on parts to ensure the unique
requirements soon after assembling.
(8) When recently equipment or overhaul, the oil tank ought to be cleaned just before use
and suggest change all grease following 8 several hours operating.
Typical failure reason and troubleshooting
No | Failure | Feasible reasons | Elimination methods |
one | Friction between the impeller |
(1) Impurities on the impeller, resulting in the gap is as well small (two) Equipment put on, resulting in a huge backlash (3) The equipment is not nicely mounted, can not preserve the impeller synchronization (four) Bearing put on resulting in clearance rising. |
(1) Get rid of grime and check out no matter whether there is harm parts (2) Change the equipment gap, exchange the gears if the equipment backlash is better than the common 30% to 50% (3)Re-assemble the gears, hold the taper contact area is to seventy five% (four)Exchange the bearing |
two | Collision between impeller and wall, the impeller top and casing |
(one) Installation hole is not appropriate (two) running strain is as well substantial, exceeding the specified worth (3) Working temperature is also higher (four) Casing or base deformation, positioning enthusiast failure (five) Bearing axial place is not very good |
(1) Modify the hole (two) Recognize leads to of overloading, diminished the force to the specified value (3) Verify the set up accuracy and minimize the pipe tension (4) Check and restore bearings, and to make certain the clearance (five)Relocation |
3 | Temperature too higher |
(1) Oil in tank is way too much, way too thick or way too filthy (two) Filter or silencer is blocked (3)The stress is greater than the specified value (four)Excessive use of the impeller, massive gap (5)Inadequate air flow, indoor temperature is large, ensuing in inlet air’s substantial temperature (six) The rotating speed is as well reduced,end result in the belt slipping. |
(one)Reduce the oil degree or rely on oil (two)Take away of blocking objects (three)Reducing the strain by means of the blower (4)Fix its clearance (five)Open up vents to reduce area temperature (6) Improve speed to avoid the belt slipping. |
four | Insufficient flow |
(one) The inlet filter is blocked (2) Impeller put on and the hole increases also a lot (3) Belt slipping (4) Massive imports pressure loss (five) Pipeline ventilation leakage |
(1) Thoroughly clean the filter dust and obstruction (two) Mend the hole (3)Tighten the belt and boost the variety of belts (four)Modify the inlet force to the specified value (five) Verify and restore the pipeline |
five | Oil leaking or oil leaking into the enclosure |
(one)Higher tank placement result in leakage from the discharge port (2) Seal use, resulting in shaft oil spills (3) The pressure is greater than the specified price |
(1)Lessen the oil degree (2)Exchange the seals (3)Very clear the air vents, 2mm diameter faucet is mounted in the center chamber, open the faucet below the wall |
6 | Irregular vibration and sound |
(1)Bearing clearance exceeds the specified value or bearing dress in (2) The equipment backlash is too huge, not in a tight fixed (3) The foreign objects and dust induced by the impeller and the impeller, the impeller and the housing collision (four) the impeller shaft deformation induced the collision caused by overload, (five) Friction in between the impeller and the inlet housing brought on by overheating (6) Unbalance of the impeller caused by fouling or overseas physique (7) Anchor bolts or other fasteners are loosened |
(one)Substitute bearings or bearing seat (two)Reassemble gear and make certain backlash (three)Cleaning blower, verify the circumstance is damaged (four)Check the again pressure, check out the wheel and modify gap (five)Verify the filter and back again force, improve the gap among the impeller inlet and the casing (six)Clear the impeller and the casing, to make sure that the impeller clearance work (7) Tighten the anchor bolts and leveling the base. |
seven | Motor overload |
(one)In contrast with the needed force, the force difference is huge that the back strain or the inlet pressure is higher (two) Compared with the tools demands, blower flow is also huge, so its force raises (3)Inlet filter is blocked, or outlet pipe is obstructed or blocked (four) Collusion or friction (trapped) rotating components (5) The oil level is as well higher (six) Narrow V-belt is overheat, vibration is as well large, or pulley is as well tiny |
(1) Decrease the pressure to the specified price (two) Exhaust the extra fuel into the ambiance or reduce the blower velocity (3) Eliminate the obstructions (four)Immediately shut down, check the purpose (five) Change the oil to the appropriate amount (six) Examine the belt stress, and changed it with huge diameter pulley. |
Our Support
1. Pre sell service two. Right after market service
a. advocate the suited model c. on-line technological assistance,
b. factory tour d. entire life spare areas and techinical assist
Gurantee
twelve months gurantee for our roots blowers
/ The use of first equipment manufacturer’s (OEM) component numbers or logos , e.g. CASE® and John Deere® are for reference functions only and for indicating merchandise use and compatibility. Our organization and the outlined EPT elements contained herein are not sponsored, approved, or made by the OEM. /