
We – EPG Team the biggest couplings and gears factory in China with 5 different branches. For a lot more details: Cell/whatsapp/telegram/Kakao us at: 0086-13083988828 /
We make all sorts of roots blower, centrifugal blower, Our Major products are as underneath:
| Kind | Diameter | Rate of flow | Pressure |
| ESR-MJ(Intense Kind) | Φ50~Φ300mm | .five~140m³/min | 9.8KPa~98.8Kpa |
| ESR(Common Type) | Φ50~Φ350mm | .five~140m³/min | nine.8KPa~seventy eight.4Kpa |
| ESR-H(High-pressure Variety) | Φ50~Φ350mm | .7~160m³/min | fifty eight.8KPa~ninety eight.8Kpa |
| ESR-V(Vacuum Pump) | Φ50~Φ350mm | .5~160m³/min | nine.8KPa~53.3Kpa |
| EL Sequence | Φ200~Φ600mm | 20.3~750m³/min | nine.8KPa~fifty eight.8Kpa |
| Multistage Centrifugal Blower or C-Collection | Φ250~Φ500mm | 50~500m³/min | 9.8KPa~98Kpa |
| ERR-ERG Type | Φ250~Φ500mm | 120~420m³/min | 9.8KPa~ninety eight.8Kpa |
The functioning 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 each sides of the cavity. Via 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 fuel in the chamber is pushed to obtain the
goal of blowing.
Function of our roots blower:
one. Big adjustment of the air quantity
two. Lower Noise
3. Higher performance
4. Low vitality cosumption
five. Long time existence
6. Reputable managing, straightforward maintenance,tiny footprint
The parameters of our roots blower:
| Sort | Ratary Pace (r/min) | Stress Increase (Kpa) | Capability (m/min) | Shaft Power (Kw) | Motor | Unit Maximn Fat(Kg) |
| Energy (Kw) | ||||||
| ESR-50 | 1100-2120 | nine.8-58.eight | .sixty five-two.58 | .3-three.54 | .75-four | 128-158 |
| ESR-sixty five | 1100-2130 | nine.8-58.8 | .ninety four-3.66 | .38-4.46 | .75-5.5 | one hundred fifty five-185 |
| ESR-80 | 1140-1900 | 9.eight-58.8 | 2.34-5.forty three | 1.04-seven.42 | 2.2-eleven | a hundred and fifty five-277 |
| ESR-one hundred | 1060-1980 | nine.8-fifty eight.eight | 4.57-nine.05 | one.35-12.15 | 3-fifteen | 309-377 |
| ESR-one hundred twenty five | 980-1850 | nine.8-58.8 | five.35-twelve.four | 1.sixty five-five.19 | 5.five-eighteen.5 | 408-451 |
| ESR-125C | 970-1830 | 9.eight-58.eight | seven.five-17.fifty seven | three.2-18.5 | four-22 | 408-451 |
| ESR-a hundred and fifty | 810-1730 | nine.8-fifty eight.8 | ten.37-27.fifteen | 3.eighty four-40.eighty two | seven.5-forty five | 688-848 |
| ESR-one hundred seventy five | 970-1520 | nine.8-58.eight | 19.65-36.65 | 7.2-forty five.95 | eleven-fifty five | 980-1080 |
| ESR-200B | 740-1450 | 9.8-fifty eight.eight | 19.65-forty four.8 | ten.15-60.forty four | 15-75 | 1272-1546 |
| ESR-two hundred | 810-1480 | 9.8-fifty eight.eight | 27.sixty five-fifty nine.2 | 8.05-80,12 | fifteen-90 | 1272-1546 |
| ESR-250B | 1100-1480 | nine.eight-fifty eight.8 | 54.77-77.55 | 19.ninety seven-90.97 | thirty-a hundred and ten | 1490-2454 |
| ESR-250 | 990-1480 | nine.8-fifty eight.8 | sixty one.4-ninety seven.fifty two | 20.1-117.three | thirty-132 | 1490-2454 |
| ESR-300 | 990-1480 | nine.8-fifty eight.eight | 87.1-138.one | 26.4-167.8 | 37-185 | 3326-3446 |
| ESR-350 | 730-1480 | nine.eight-58.8 | 78.41-177.31 | fifty five-250 | ||
| ESR-50H | 1230-2120 | 63.seven-ninety eight | .forty five-2.02 | two.05-6.12 | three-7.5 | a hundred and sixty–one hundred seventy |
| ESR-65H | 1240-2130 | 63.seven-98 | .78-2.53 | 2.89-7.fifty five | 4-11 | 198-230 |
| ESR-80H | 1140-1900 | sixty three.7-98 | 1.eighty two-4.55 | 4.09-ten.one | 5.five-fifteen | 316-326 |
| ESR-100H | 1060-1980 | sixty three.7-ninety eight | 2.65-eight.06 | 6.36-seventeen.two | seven.5-22 | 398-459 |
| ESR-125H | 980-1850 | 63.seven-98 | 4.sixty four-eleven.23 | 8.92-24.2 | 11-thirty | 544-630 |
| ESR-150H | 810-1730 | 63.seven-ninety eight | nine.fifty three-twenty five.76 | 17.16-65 | eighteen.five-75 | 752-1571 |
| ESR-200H | 810-1480 | sixty three.7-98 | twenty five.34-56.ninety two | forty two.34-a hundred and twenty | fifty five-132 | 1426-1934 |
| ESR-250H | 990-1480 | sixty three.seven-ninety eight | fifty eight-93.7 | 83.2-205 | 90-220 | 2980-3468 |
| ESR300H | 990-1480 | 63.seven-ninety eight | 86.9-134.one | 114.seven-270 | 132-280 | 3476-3998 |
| ERF-245 | 650-980 | 9.8-ninety eight | forty seven.five-ninety seven.four | 16-183 | 18.five-200 | 3630-3690 |
| ERF-250 | 650-980 | 9.8-98 | 61.six-a hundred and twenty.4 | 19-227 | 22-250 | 4450-4500 |
| ERF-290 | 650-980 | nine.8-seventy eight.four | ninety two.three-128 | 22-213 | 30-250 | 4890-4710 |
| ERF-295 | 650-980 | nine.eight-78.4 | ninety seven.three-152.5 | 23-227 | 30-250 | 4890-4880 |
| ERF-297 | 650-980 | 9.eight-seventy eight.4 | 87.five-167.6 | 26-249 | 30-280 | 5330-5520 |
| ERF-three hundred | 650-980 | 9.eight-seventy eight.four | one hundred and one.5-188.seven | 29-278 | 37-315 | 5330-5520 |
| ERF-350 | 650-980 | 9.eight-78.four | 126-224.nine | 34-249 | forty five-280 | 5210-6470 |
| ERG-three hundred | 590-730 | 9.eight-98 | 128.3-196 | 38-362 | forty five-400 | 9440-15710 |
| ERG-350 | 590-730 | nine.eight-ninety eight | 159.three-231.six | forty three-420 | 55-450 | 9700-1571 |
| ERG-four hundred | 590-730 | nine.eight-83.three | 203.1-290.9 | fifty two-449 | 75-five hundred | 10090-11390 |
| ERG-445 | 590-730 | 9.eight-seventy three.five | 229.seven-327.8 | 58-477 | 75-560 | 10600-12230 |
| ERG-450 | 590-730 | 9.8-73.five | 262.four-366.2 | sixty four-496 | 75-560 | 10600-12230 |
| ERG-500 | 590-730 | nine.eight-63.7 | 327.four-452.four | 78-529 | ninety-560 | 12790-14620 |
| ERF-240-V | 650-980 | -9.8- -forty nine | 38.one-seventy eight | thirteen-seventy six | eighteen.five-90 | 3420-3285 |
| ERF-245-V | 650-980 | -nine.8- -49 | 47.5-97.4 | 16-ninety five | 22-one hundred ten | 3425-3360 |
| ERF-250-V | 650-980 | -nine.8- -49 | 63-a hundred and twenty | 19-117 | 22-132 | 3910-3830 |
| ERF-290-V | 650-980 | -nine.8- -forty nine | 72.six-one hundred forty four | 22-136 | thirty-a hundred and sixty | 4415-4270 |
| ERF-295-V | 650-980 | -nine.eight- -49 | seventy six.six-152 | 23-145 | thirty-one hundred sixty | 4425-4485 |
| ERF-297-V | 650-980 | -nine.8- -49 | 84.three-166.8 | 26-160 | thirty-a hundred and eighty | 5000-4980 |
| ERF-three hundred-V | 650-980 | -nine.eight- -forty nine | 97-192 | 29-178 | 37-200 | 5000-4980 |
| ERF-350-V | 650-980 | -nine.eight- -forty nine | 116-225 | 34-209 | 45-250 | 5400-5700 |
| ERG-300V | 590-730 | -nine.eight- -49 | 133-193 | 38-184 | 45-220 | 7800-9100 |
| ERG-350V | 590-730 | -nine.8- -49 | 163-231 | forty three-216 | 55-250 | 9500-9470 |
| ERG-400V | 590-730 | -9.8- -49 | 199-290 | 52-269 | 75-315 | 9900-10130 |
| ERG-445V | 590-730 | -9.8- -49 | 224.8-326.9 | fifty eight-303 | 75-355 | 9900-10130 |
| ERG-450V | 590-730 | -9.8- -49 | 255-365 | 64-335 | seventy five-400 | 11230-11300 |
| ERG-500V | 590-730 | -nine.eight- -forty nine | 314-452 | seventy eight-412 | 132-450 | 13630-13850 |
| ERF-245W | 650-980 | -thirteen.3- -53.3 | fifty three.5-a hundred and one | 21.5-102 | 30-a hundred and ten | 3630-3360 |
| ERF-250W | 650-980 | -13.3- -53.3 | 69-127 | 26.5-127 | thirty-one hundred sixty | 3985-4115 |
| ERF-290W | 650-980 | -thirteen.3- -53.3 | eighty two.six-one hundred fifty | 30.5-149 | 37-185 | 4340-4580 |
| ERF-295W | 650-980 | -thirteen.3- -53.three | 87-158 | 32-158 | 37-185 | 4440-4580 |
| ERF-297W | 650-980 | -13.three- -fifty three.3 | 95-174 | 36-174 | 45-two hundred | 5230-5130 |
| ERF-300W | 650-980 | -thirteen.three- -53.three | 109-195 | 40-193 | 55-220 | 5230-5130 |
| ERF-350W | 650-980 | -13.three- -53.three | 129-230 | fifty-230 | 75-250 | 5840-5670 |
| ERG-300W | 590-730 | -thirteen.3- -fifty three.three | 142-197 | fifty two-201 | seventy five-220 | 9100-9000 |
| ERF-350W | 590-730 | -13.3- -53.three | 168-234.four | 59-235.5 | seventy five-280 | 9500-9600 |
| ERG-400W | 590-730 | -thirteen.3- -53.3 | 220-276.six | 71-292 | ninety-315 | 9900-10130 |
| ERG-445W | 590-730 | -thirteen.3- -53.3 | 244-294.6 | eighty two-331 | 90-400 | 11230-11300 |
| ERG450W | 590-730 | -13.three- -53.three | 275-368.five | ninety one-366 | a hundred and ten-400 | 11230-11300 |
| ETRF-250 (240,250) | 650-980 | ninety eight-196 | sixty four.8-112 | one hundred thirty five-355 | one hundred sixty-four hundred | 8700-8600 |
| ETRF-295 (245,295) | 650-980 | ninety eight-196 | eighty.eight-139 | 167-439 | 185-500 | 9200-9100 |
| ETRF-three hundred (245,295) | 650-980 | 98-176.4 | 102-174 | 206-497 | 250-560 | 10320-10500 |
| ETRF-350 (245,295) | 650-980 | ninety eight-137.2 | 124-207 | 241-473 | 280-560 | 10700-11110 |
| ETRG-400 (300,400) | 590-740 | ninety eight-176.4 | 205-273 | 380-773 | 450-900 | 21350-24200 |
| ETRG-450 (350,450) | 590-740 | ninety eight-176.4 | 263-428 | 476-955 | 560-a thousand | 24200-27600 |
| ETRF-250W (240,250) | 650-980 | -53.3–80 | 72-121 | 75.6-121 | ninety-160 | 6100-6470 |
| ETRF-295W (245/295) | 650-980 | -53.three–80 | ninety three.eight-154 | 99.5-186 | 110-220 | 7000-6400 |
| ETRF-300W (2505/three hundred) | 650-980 | -53.3–eighty | 116-189 | one hundred fifteen-220 | 132-250 | 7750-7760 |
| EL81WD | 580-980 | nine.8-fifty eight.8 | fifty four.2-one hundred thirty | 18-151 | forty five-185 | 3595 |
| EL82WDB | 580-980 | 9.8-fifty eight.8 | 72.8-161 | 22-191 | forty five-220 | 3860 |
| EL83WDA | 580-980 | 9.eight-fifty eight.nine | 101-213 | 28.5-202 | 45-220 | 4300 |
| EL84WDA | 580-980 | nine.8-58.eight | 129-267 | 35.4-252 | forty five-280 | 4720 |
| EL93WDA | 580-730 | nine.8-49 | 230-329 | fifty six.four-311 | seventy five-355 | 7765 |
| EL94WDA | 580-730 | nine.8-forty nine | 263-373 | 64-353 | seventy five-400 | 8130 |
| EL95WDA | 490-580 | nine.8-58.eight | 308-434 | 81.4-414 | ninety-450 | 11500 |
| EL96WDA | 580 | fifty eight.eight | 381 | 497 | 560 | 11500 |
| E397WN | 1000-1650 | 40 | five-nine | |||
| E408WN | 870-1650 | 40 | 10-22 | |||
| E517WN | 980-1580 | 40 | 20-30 | |||
| E520WN | 930-1550 | 40 | 24-45 | |||
| E607WN | 750-1250 | forty | forty five-76 | |||
| E610WN | 750-1250 | forty | 75-a hundred thirty |
Spare components and framework of our roots blower:
Deal of our Roots Blower
Pack into iron case, two layer,blower body and motor in lower layer, inlet/out silencer and so on in upper layer
Roots blower pack technique very same as iron situation, just modify to Fumigation Cost-free Plywood Scenario
Our manufacturing facility is a expert manufacturer of Roots blowers which has over twenty years’ experience in machinery
production. It is found in Xihu (West Lake) Dis. East Industrial Park, fifty kilometers to the east of Shan EPT provincial
capital— HangZhou. Our business also has convenient traffic transportation, as it is fifteen kilometers absent from
Diaozhen City station of HangZhou-HangZhou expressway, and thirty kilometers absent from East HangZhou station of
ZheJiang -ZheJiang expressway.The foremost merchandise of our company is ESR -kind Roots Blower. The roots
vacuum pump is a new type of high-effectiveness roots blower, which is produced independently based on the
domestic and international innovative technologies. A number of patented technologies have been adopted on Roots
Blower, and thus we have created substantial results in energy conservation and noise reduction, and so forth.. So much, our
business has invested more than thirty,000,000 RMB to introduce this sort of advanced expert gear as
horizontal machining heart, vertical machining centre, two-way CNC area planer, CNC lathe, CNC milling
equipment, CNC planer, airplane grinder, cylindrical grinding device, and a few coordinates tests device.
Apart from, we have taken various actions to standardize the procedure stream this sort of as functioning and cooperating
with several scientific research units, faculties and universities at residence and overseas. We also continuously try out to
absorb and increase the domestic sophisticated production systems, so as to promote the upgrading and
optimization of the item and make the item quality attain the advanced level at home and overseas.
ESR -type Roots Blower includes numerous series these kinds of as 3-leaves Sort, Two-leaves Type and Centrifugal
Sort,which can be even more divided to hundreds of types. The goods are extensively utilized in sewage treatment,
pneumatic conveying,vacuum packaging, aquaculture, meals processing, EPT power, petrochemical, cement,
mining and other industries. Our items have this sort of positive aspects as lower sound, vitality saving, stable quality,
and long support life, and so on.. With the revenue outlets throughout the domestic cash towns, our products offer well all
in excess of the nation, and have been exported to North The usa,Russia, Malaysia, Indonesia, Vietnam, South Africa
and some other nations around the world. Possessing acquired the ISO9001 Worldwide Quality Method Certification, we have
recognized and enhanced the good quality assurance of the goods creating, manufacturing, and set up.
From the method of layout, analysis and growth to the completed merchandise, we have received the whole
method controlled independently, hence providing the full foundation and dependability promise for the goods balance
and durability. Possessing a perfect income community and after-sales support, we supply our clients with greater-
high quality and more productive provider.All personnel of our business sincerely welcome the wide masses of friends to
guidebook, and negotiate organization with us.
Our Roots Blower Workshop
Doosn Horzitonal Device Centre
The Software of the Roots Blower
Routine maintenance and inspection
(1) Check out all fasteners and finding pins problems regardless of whether they are loosening.
(2) Constantly examine whether or not the leakage phenomenon of the body.
(three) Spend focus to lubrication, volume of grease and noises when working,
decide regardless of whether it performs under the essential circumstances.
(4) Lubricant & grease: The lubricant is for medium load industrial gear oil
(grade 220, kinematic viscosity of 198 ~ 242mm2 / s 40ºC, flash position ≥ 200ºC)
The grease is butter (synthetic lithium grease penetration 220-250, fall position ≥
190ºC). Substitute the lubricant and grease following first 200 hrs running, and substitute
once again right after a moth managing. Afterwards, exchange the lubricant and grease according to the
atmosphere and lubricant (grease) quality suggest a suited EPT for a few
months.
(five) Constantly examine the inlet air filter, clean or substitute the filter in time.
(six) Blower overload often not instantly displayed, so pay out attention to
the ingestion and exhaust strain, bearing temperature and the recent boost trends
of motor to determine regardless of whether the blower operates typically
(seven) Ahead of disassembling the blower, the assembling relation and proportions
should be recorded or calculated, make marks on components to make sure the first
demands following assembling.
(eight) When recently equipment or overhaul, the oil tank need to be cleaned prior to use
and propose exchange all grease right after eight hrs operating.
Typical failure purpose and troubleshooting
| No | Failure | Feasible causes | Elimination strategies |
| one | Friction between the impeller | (one) Impurities on the impeller, ensuing in the gap is way too little (2) Gear dress in, ensuing in a big backlash (3) The equipment is not nicely fastened, can not keep the impeller synchronization (4) Bearing put on resulting in clearance increasing. | (one) Eliminate grime and check out whether or not there is harm elements (2) Modify the equipment hole, substitute the gears if the gear backlash is higher than the regular 30% to fifty% (three)Re-assemble the gears, hold the taper speak to spot is to 75% (four)Change the bearing |
| two | Collision in between impeller and wall, the impeller top and casing | (1) Set up hole is not right (two) functioning pressure is as well substantial, exceeding the specified benefit (3) Operating temperature is too substantial (four) Casing or foundation deformation, positioning admirer failure (five) Bearing axial area is not excellent | (one) Adjust the hole (two) Identify leads to of overloading, decreased the stress to the specified value (3) Check the set up precision and minimize the pipe tension (four) Check out and restore bearings, and to ensure the clearance (five)Relocation |
| 3 | Temperature too substantial | (one) Oil in tank is way too significantly, way too thick or also soiled (2) Filter or silencer is blocked (3)The pressure is greater than the specified price (4)Abnormal use of the impeller, large gap (five)Inadequate air flow, indoor temperature is higher, resulting in inlet air’s large temperature (6) The rotating speed is as well minimal,end result in the belt slipping. | (1)Minimize the oil stage or rely on oil (2)Get rid of of blocking objects (3)Minimizing the force by means of the blower (four)Restore its clearance (5)Open up vents to minimize space temperature (six) Boost speed to avert the belt slipping. |
| 4 | Inadequate stream | (1) The inlet filter is blocked (two) Impeller wear and the gap boosts as well considerably (3) Belt slipping (four) Huge imports strain reduction (five) Pipeline ventilation leakage | (1) Thoroughly clean the filter dust and obstruction (two) Repair the gap (three)Tighten the belt and boost the number of belts (four)Alter the inlet stress to the specified worth (5) Examine and mend the pipeline |
| 5 | Oil leaking or oil leaking into the enclosure | (1)Large tank placement result in leakage from the discharge port (two) Seal put on, ensuing in shaft oil spills (3) The force is larger than the specified value | (1)Minimize the oil level (2)Change the seals (three)Very clear the air vents, 2mm diameter faucet is fastened in the center chamber, open the faucet beneath the wall |
| six | Irregular vibration and noise | (1)Bearing clearance exceeds the specified price or bearing put on (2) The gear backlash is also massive, not in a tight fastened (3) The overseas objects and dust induced by the impeller and the impeller, the impeller and the housing collision (4) the impeller shaft deformation induced the collision triggered by overload, (five) Friction between the impeller and the inlet housing triggered by overheating (6) Unbalance of the impeller caused by fouling or foreign physique (seven) Anchor bolts or other fasteners are loosened | (1)Exchange bearings or bearing seat (2)Reassemble equipment and make certain backlash (three)Cleansing blower, verify the case is broken (four)Check out the back strain, check the wheel and alter gap (5)Verify the filter and again stress, increase the gap between the impeller inlet and the casing (six)Cleanse the impeller and the casing, to make certain that the impeller clearance perform (seven) Tighten the anchor bolts and leveling the foundation. |
| seven | Motor overload | (one)When compared with the essential stress, the strain big difference is big that the back again pressure or the inlet pressure is higher (2) In contrast with the tools requirements, blower circulation is also massive, so its pressure increases (3)Inlet filter is blocked, or outlet pipe is obstructed or blocked (four) Collusion or friction (trapped) rotating components (five) The oil stage is as well large (6) Slender V-belt is overheat, vibration is too huge, or pulley is as well tiny | (1) Decrease the pressure to the specified price (two) Exhaust the excess gasoline into the ambiance or decrease the blower pace (three) Get rid of the obstructions (4)Right away shut down, examine the explanation (5) Modify the oil to the right level (six) Check out the belt tension, and changed it with big diameter pulley. |
Our Service
1. Pre sell service two. Following promote service
a. suggest the suitable model c. on the internet technical assistance,
b. manufacturing facility tour d. total daily life spare elements and techinical assist
Gurantee
twelve months gurantee for our roots blowers
/ The use of first equipment manufacturer’s (OEM) part numbers or trademarks , e.g. CASE® and John Deere® are for reference needs only and for indicating product use and compatibility. Our firm and the detailed EPT areas contained herein are not sponsored, accredited, or manufactured by the OEM. /
