We – EPG Group the most significant couplings and gears manufacturing unit in China with five various branches. For a lot more specifics: Mobile/whatsapp/telegram/Kakao us at: 0086-13083988828 /
We make all kinds of roots blower, centrifugal blower, Our Main goods are as under:
Kind | Diameter | Fee of movement | Stress |
ESR-MJ(Intensive Sort) | Φ50~Φ300mm | .5~140m³/min | nine.8KPa~ninety eight.8Kpa |
ESR(Common Sort) | Φ50~Φ350mm | .5~140m³/min | 9.8KPa~seventy eight.4Kpa |
ESR-H(Substantial-stress Kind) | Φ50~Φ350mm | .seven~160m³/min | fifty eight.8KPa~ninety eight.8Kpa |
ESR-V(Vacuum Pump) | Φ50~Φ350mm | .five~160m³/min | 9.8KPa~fifty three.3Kpa |
EL Series | Φ200~Φ600mm | twenty.3~750m³/min | 9.8KPa~58.8Kpa |
Multistage Centrifugal Blower or C-Sequence |
Φ250~Φ500mm | 50~500m³/min | nine.8KPa~98Kpa |
ERR-ERG Type | Φ250~Φ500mm | a hundred and twenty~420m³/min | nine.8KPa~98.8Kpa |
The functioning principle of the three-blade roots blower: two a few-lobed rotors are arranged in the cavity, and the
suction port and the discharge port are opened on each sides of the cavity. By way of 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 gasoline in the chamber is pushed to obtain the
function of blowing.
Attribute of our roots blower:
one. Huge adjustment of the air quantity
two. Lower Noise
3. Higher effectiveness
four. Minimal vitality cosumption
5. Long time daily life
six. Reputable working, simple servicing,little footprint
The parameters of our roots blower:
Kind | Ratary Velocity (r/min) |
Strain Increase (Kpa) |
Capability (m/min) |
Shaft Power (Kw) |
Motor | Device Maximn Bodyweight(Kg) |
Electrical power (Kw) |
||||||
ESR-50 | 1100-2120 | nine.eight-fifty eight.eight | .sixty five-two.fifty eight | .three-three.54 | .75-4 | 128-158 |
ESR-sixty five | 1100-2130 | 9.eight-58.eight | .ninety four-3.66 | .38-four.46 | .seventy five-5.5 | one hundred fifty five-185 |
ESR-80 | 1140-1900 | nine.8-58.8 | two.34-five.43 | one.04-7.42 | two.2-eleven | 155-277 |
ESR-100 | 1060-1980 | 9.eight-fifty eight.eight | four.57-nine.05 | 1.35-12.15 | 3-15 | 309-377 |
ESR-one hundred twenty five | 980-1850 | 9.eight-58.8 | five.35-12.4 | 1.sixty five-five.19 | five.5-18.five | 408-451 |
ESR-125C | 970-1830 | nine.eight-fifty eight.eight | 7.5-17.57 | three.two-18.5 | four-22 | 408-451 |
ESR-a hundred and fifty | 810-1730 | nine.eight-fifty eight.8 | ten.37-27.15 | 3.eighty four-40.82 | 7.five-forty five | 688-848 |
ESR-a hundred seventy five | 970-1520 | nine.eight-58.eight | 19.sixty five-36.sixty five | 7.two-forty five.ninety five | 11-fifty five | 980-1080 |
ESR-200B | 740-1450 | 9.eight-fifty eight.8 | 19.sixty five-forty four.eight | ten.fifteen-sixty.forty four | fifteen-seventy five | 1272-1546 |
ESR-two hundred | 810-1480 | 9.8-58.eight | 27.sixty five-59.two | 8.05-80,12 | 15-90 | 1272-1546 |
ESR-250B | 1100-1480 | nine.8-58.eight | 54.seventy seven-77.fifty five | 19.ninety seven-ninety.ninety seven | thirty-a hundred and ten | 1490-2454 |
ESR-250 | 990-1480 | 9.eight-58.8 | 61.four-ninety seven.fifty two | twenty.one-117.three | 30-132 | 1490-2454 |
ESR-three hundred | 990-1480 | nine.eight-58.eight | 87.1-138.one | 26.4-167.eight | 37-185 | 3326-3446 |
ESR-350 | 730-1480 | nine.eight-fifty eight.eight | seventy eight.forty one-177.31 | 55-250 | ||
ESR-50H | 1230-2120 | 63.seven-ninety eight | .forty five-2.02 | 2.05-6.twelve | 3-seven.five | a hundred and sixty–one hundred seventy |
ESR-65H | 1240-2130 | sixty three.seven-ninety eight | .seventy eight-two.53 | 2.89-7.fifty five | 4-eleven | 198-230 |
ESR-80H | 1140-1900 | 63.7-98 | one.82-4.fifty five | 4.09-ten.one | five.5-15 | 316-326 |
ESR-100H | 1060-1980 | 63.7-98 | two.65-eight.06 | six.36-seventeen.two | seven.five-22 | 398-459 |
ESR-125H | 980-1850 | 63.seven-ninety eight | 4.sixty four-11.23 | 8.ninety two-24.2 | 11-thirty | 544-630 |
ESR-150H | 810-1730 | 63.seven-ninety eight | nine.fifty three-twenty five.seventy six | seventeen.16-65 | eighteen.5-seventy five | 752-1571 |
ESR-200H | 810-1480 | sixty three.seven-ninety eight | twenty five.34-fifty six.92 | 42.34-a hundred and twenty | fifty five-132 | 1426-1934 |
ESR-250H | 990-1480 | sixty three.7-98 | fifty eight-93.seven | 83.two-205 | 90-220 | 2980-3468 |
ESR300H | 990-1480 | 63.seven-ninety eight | 86.9-134.1 | 114.7-270 | 132-280 | 3476-3998 |
ERF-245 | 650-980 | 9.8-ninety eight | 47.5-97.four | 16-183 | eighteen.5-two hundred | 3630-3690 |
ERF-250 | 650-980 | 9.8-ninety eight | 61.six-120.4 | 19-227 | 22-250 | 4450-4500 |
ERF-290 | 650-980 | 9.eight-seventy eight.4 | ninety two.3-128 | 22-213 | 30-250 | 4890-4710 |
ERF-295 | 650-980 | nine.eight-seventy eight.four | 97.3-152.five | 23-227 | thirty-250 | 4890-4880 |
ERF-297 | 650-980 | nine.eight-78.four | 87.5-167.six | 26-249 | thirty-280 | 5330-5520 |
ERF-300 | 650-980 | nine.8-seventy eight.4 | a hundred and one.five-188.7 | 29-278 | 37-315 | 5330-5520 |
ERF-350 | 650-980 | 9.8-seventy eight.four | 126-224.nine | 34-249 | 45-280 | 5210-6470 |
ERG-300 | 590-730 | nine.8-98 | 128.3-196 | 38-362 | forty five-four hundred | 9440-15710 |
ERG-350 | 590-730 | 9.8-ninety eight | 159.3-231.6 | 43-420 | fifty five-450 | 9700-1571 |
ERG-four hundred | 590-730 | nine.8-eighty three.three | 203.1-290.9 | 52-449 | seventy five-500 | 10090-11390 |
ERG-445 | 590-730 | nine.8-73.5 | 229.7-327.eight | fifty eight-477 | seventy five-560 | 10600-12230 |
ERG-450 | 590-730 | nine.8-73.five | 262.four-366.2 | 64-496 | seventy five-560 | 10600-12230 |
ERG-five hundred | 590-730 | 9.eight-sixty three.7 | 327.4-452.four | seventy eight-529 | ninety-560 | 12790-14620 |
ERF-240-V | 650-980 | -9.8- -forty nine | 38.1-78 | thirteen-76 | eighteen.5-90 | 3420-3285 |
ERF-245-V | 650-980 | -nine.eight- -forty nine | forty seven.five-97.4 | 16-ninety five | 22-a hundred and ten | 3425-3360 |
ERF-250-V | 650-980 | -9.8- -forty nine | sixty three-one hundred twenty | 19-117 | 22-132 | 3910-3830 |
ERF-290-V | 650-980 | -9.eight- -49 | seventy two.six-a hundred and forty four | 22-136 | thirty-a hundred and sixty | 4415-4270 |
ERF-295-V | 650-980 | -nine.eight- -forty nine | seventy six.6-152 | 23-a hundred forty five | thirty-160 | 4425-4485 |
ERF-297-V | 650-980 | -9.8- -49 | 84.three-166.8 | 26-one hundred sixty | 30-a hundred and eighty | 5000-4980 |
ERF-300-V | 650-980 | -9.eight- -forty nine | 97-192 | 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.eight- -forty nine | 133-193 | 38-184 | forty five-220 | 7800-9100 |
ERG-350V | 590-730 | -9.eight- -49 | 163-231 | forty three-216 | fifty five-250 | 9500-9470 |
ERG-400V | 590-730 | -nine.eight- -forty nine | 199-290 | fifty two-269 | seventy five-315 | 9900-10130 |
ERG-445V | 590-730 | -nine.eight- -forty nine | 224.8-326.nine | 58-303 | seventy five-355 | 9900-10130 |
ERG-450V | 590-730 | -nine.8- -49 | 255-365 | 64-335 | seventy five-400 | 11230-11300 |
ERG-500V | 590-730 | -nine.eight- -49 | 314-452 | seventy eight-412 | 132-450 | 13630-13850 |
ERF-245W | 650-980 | -thirteen.three- -53.three | fifty three.5-101 | 21.five-102 | thirty-a hundred and ten | 3630-3360 |
ERF-250W | 650-980 | -13.three- -53.3 | sixty nine-127 | 26.5-127 | thirty-one hundred sixty | 3985-4115 |
ERF-290W | 650-980 | -thirteen.three- -53.3 | 82.six-a hundred and fifty | thirty.five-149 | 37-185 | 4340-4580 |
ERF-295W | 650-980 | -13.3- -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 | -13.three- -fifty three.3 | 109-195 | 40-193 | fifty five-220 | 5230-5130 |
ERF-350W | 650-980 | -13.3- -fifty three.three | 129-230 | fifty-230 | 75-250 | 5840-5670 |
ERG-300W | 590-730 | -13.3- -fifty three.three | 142-197 | fifty two-201 | seventy five-220 | 9100-9000 |
ERF-350W | 590-730 | -thirteen.three- -fifty three.3 | 168-234.4 | fifty nine-235.5 | 75-280 | 9500-9600 |
ERG-400W | 590-730 | -thirteen.3- -53.three | 220-276.6 | 71-292 | 90-315 | 9900-10130 |
ERG-445W | 590-730 | -thirteen.3- -53.3 | 244-294.6 | 82-331 | ninety-400 | 11230-11300 |
ERG450W | 590-730 | -thirteen.three- -53.three | 275-368.5 | ninety one-366 | one hundred ten-four hundred | 11230-11300 |
ETRF-250 (240,250) |
650-980 | ninety eight-196 | 64.8-112 | one hundred thirty five-355 | one hundred sixty-four hundred | 8700-8600 |
ETRF-295 (245,295) |
650-980 | ninety eight-196 | 80.eight-139 | 167-439 | 185-five hundred | 9200-9100 |
ETRF-three hundred (245,295) |
650-980 | 98-176.four | 102-174 | 206-497 | 250-560 | 10320-10500 |
ETRF-350 (245,295) |
650-980 | 98-137.two | 124-207 | 241-473 | 280-560 | 10700-11110 |
ETRG-four hundred (three hundred,400) |
590-740 | 98-176.four | 205-273 | 380-773 | 450-900 | 21350-24200 |
ETRG-450 (350,450) |
590-740 | ninety eight-176.4 | 263-428 | 476-955 | 560-one thousand | 24200-27600 |
ETRF-250W (240,250) |
650-980 | -53.three–80 | seventy two-121 | seventy five.6-121 | 90-one hundred sixty | 6100-6470 |
ETRF-295W (245/295) |
650-980 | -fifty three.3–80 | 93.eight-154 | ninety nine.5-186 | 110-220 | 7000-6400 |
ETRF-300W (2505/three hundred) |
650-980 | -53.3–80 | 116-189 | 115-220 | 132-250 | 7750-7760 |
EL81WD | 580-980 | 9.eight-58.8 | 54.two-one hundred thirty | 18-151 | forty five-185 | 3595 |
EL82WDB | 580-980 | nine.eight-fifty eight.eight | seventy two.8-161 | 22-191 | forty five-220 | 3860 |
EL83WDA | 580-980 | nine.8-fifty eight.9 | one hundred and one-213 | 28.5-202 | forty five-220 | 4300 |
EL84WDA | 580-980 | nine.8-fifty eight.8 | 129-267 | 35.4-252 | 45-280 | 4720 |
EL93WDA | 580-730 | nine.8-49 | 230-329 | 56.four-311 | seventy five-355 | 7765 |
EL94WDA | 580-730 | 9.8-forty nine | 263-373 | sixty four-353 | 75-four hundred | 8130 |
EL95WDA | 490-580 | nine.8-fifty eight.8 | 308-434 | 81.4-414 | 90-450 | 11500 |
EL96WDA | 580 | fifty eight.8 | 381 | 497 | 560 | 11500 |
E397WN | 1000-1650 | 40 | 5-nine | |||
E408WN | 870-1650 | forty | ten-22 | |||
E517WN | 980-1580 | forty | 20-30 | |||
E520WN | 930-1550 | 40 | 24-45 | |||
E607WN | 750-1250 | 40 | 45-seventy six | |||
E610WN | 750-1250 | forty | seventy five-130 |
Spare areas and construction of our roots blower:
Package deal of our Roots Blower
Pack into iron case, two layer,blower human body and motor in reduce layer, inlet/out silencer and so on in higher layer
Roots blower pack strategy very same as iron circumstance, just adjust to Fumigation Totally free Plywood Case
Our manufacturing facility is a professional maker of Roots blowers which has more than twenty years’ experience in equipment
production. It is located in Xihu (West Lake) Dis. East Industrial Park, 50 kilometers to the east of Shan EPT provincial
capital— HangZhou. Our organization also has handy targeted traffic transportation, as it is 15 kilometers away from
Diaozhen Town station of HangZhou-HangZhou expressway, and thirty kilometers absent from East HangZhou station of
ZheJiang -ZheJiang expressway.The major solution of our company is ESR -variety Roots Blower. The roots
vacuum pump is a new sort of substantial-performance roots blower, which is developed independently based mostly on the
domestic and foreign superior technologies. Several patented technologies have been adopted on Roots
Blower, and therefore we have produced substantial results in energy conservation and noise reduction, and so forth.. So much, our
organization has invested far more than 30,000,000 RMB to introduce this sort of innovative professional tools as
horizontal machining center, vertical machining heart, two-way CNC surface area planer, CNC lathe, CNC milling
machine, CNC planer, plane grinder, cylindrical grinding device, and three coordinates tests machine.
Besides, we have taken different actions to standardize the approach movement this sort of as operating and cooperating
with several scientific research units, schools and universities at house and abroad. We also repeatedly try to
take up and boost the domestic superior manufacturing systems, so as to market the upgrading and
optimization of the solution and make the item top quality get to the superior level at residence and abroad.
ESR -kind Roots Blower includes many collection this sort of as A few-leaves Sort, Two-leaves Type and Centrifugal
Kind,which can be additional divided to hundreds of kinds. The items are commonly used in sewage treatment,
pneumatic conveying,vacuum packaging, aquaculture, foods processing, EPT electrical power, petrochemical, cement,
mining and other industries. Our merchandise have this sort of rewards as lower noise, strength preserving, steady high quality,
and extended service lifestyle, and so on.. With the sales outlets throughout the domestic capital metropolitan areas, our merchandise market well all
more than the region, and have been exported to North America,Russia, Malaysia, Indonesia, Vietnam, South Africa
and some other nations. Obtaining obtained the ISO9001 International Good quality Method Certification, we have
set up and improved the high quality assurance of the goods developing, production, and set up.
From the procedure of layout, investigation and development to the finished goods, we have received the total
process managed independently, thus supplying the total foundation and reliability ensure for the items steadiness
and longevity. Having a perfect revenue community and after-income support, we offer our buyers with greater-
quality and more productive support.All staff of our company sincerely welcome the wide masses of friends to
manual, and negotiate company with us.
Our Roots Blower Workshop
Doosn Horzitonal Machine Centre
The Application of the Roots Blower
Upkeep and inspection
(1) Check out all fasteners and locating pins circumstances whether they are loosening.
(two) Usually examine whether or not the leakage phenomenon of the entire body.
(3) Spend focus to lubrication, sum of grease and noises when operating,
figure out whether or not it works underneath the necessary circumstances.
(four) Lubricant & grease: The lubricant is for medium load industrial equipment oil
(quality 220, kinematic viscosity of 198 ~ 242mm2 / s 40ºC, flash stage ≥ 200ºC)
The grease is butter (synthetic lithium grease penetration 220-250, fall stage ≥
190ºC). Change the lubricant and grease following first 200 hrs operating, and replace
once more after a moth operating. Later on, exchange the lubricant and grease in accordance to the
setting and lubricant (grease) top quality propose a ideal EPT for a few
months.
(five) Usually check out the inlet air filter, thoroughly clean or exchange the filter in time.
(6) Blower overload at times not immediately displayed, so spend consideration to
the intake and exhaust stress, bearing temperature and the existing boost traits
of motor to establish whether or not the blower functions normally
(7) Before disassembling the blower, the assembling relation and dimensions
need to be recorded or calculated, make marks on parts to guarantee the first
specifications right after assembling.
(eight) When recently equipment or overhaul, the oil tank ought to be cleaned prior to use
and propose change all grease right after 8 hours managing.
Typical failure cause and troubleshooting
No | Failure | Achievable motives | Elimination techniques |
one | Friction between the impeller |
(one) Impurities on the impeller, resulting in the hole is too little (two) Gear use, resulting in a huge backlash (three) The equipment is not effectively mounted, can not keep the impeller synchronization (4) Bearing put on ensuing in clearance rising. |
(one) Get rid of dust and check whether there is hurt parts (two) Adjust the gear gap, substitute the gears if the gear backlash is higher than the typical 30% to 50% (3)Re-assemble the gears, hold the taper get in touch with location is to 75% (4)Replace the bearing |
2 | Collision between impeller and wall, the impeller top and casing |
(one) Set up hole is not correct (two) working stress is also large, exceeding the specified benefit (three) Working temperature is also large (4) Casing or base deformation, positioning enthusiast failure (5) Bearing axial spot is not excellent |
(one) Alter the gap (2) Determine causes of overloading, reduced the stress to the specified value (3) Examine the set up accuracy and lessen the pipe stress (four) Examine and fix bearings, and to guarantee the clearance (five)Relocation |
3 | Temperature as well substantial |
(1) Oil in tank is too a lot, way too thick or too dirty (two) Filter or silencer is blocked (three)The stress is increased than the specified benefit (4)Abnormal wear of the impeller, huge hole (five)Poor ventilation, indoor temperature is substantial, ensuing in inlet air’s large temperature (6) The rotating pace is way too reduced,result in the belt slipping. |
(one)Lessen the oil stage or rely on oil (2)Take away of blocking objects (3)Reducing the pressure via the blower (4)Repair its clearance (five)Open up vents to decrease room temperature (six) Improve pace to stop the belt slipping. |
4 | Inadequate movement |
(one) The inlet filter is blocked (2) Impeller dress in and the hole boosts way too much (three) Belt slipping (4) Massive imports stress decline (5) Pipeline ventilation leakage |
(1) Clear the filter dust and obstruction (two) Fix the hole (3)Tighten the belt and improve the number of belts (4)Adjust the inlet stress to the specified price (five) Verify and mend the pipeline |
five | Oil leaking or oil leaking into the enclosure |
(one)Substantial tank place result in leakage from the discharge port (two) Seal wear, resulting in shaft oil spills (3) The pressure is increased than the specified benefit |
(one)Lessen the oil amount (two)Replace the seals (three)Clear the air vents, 2mm diameter faucet is set in the middle chamber, open up the faucet beneath the wall |
six | Abnormal vibration and sound |
(one)Bearing clearance exceeds the specified benefit or bearing dress in (2) The equipment backlash is too large, not in a restricted set (three) The international objects and dust caused by the impeller and the impeller, the impeller and the housing collision (four) the impeller shaft deformation triggered the collision brought on by overload, (5) Friction in between the impeller and the inlet housing triggered by overheating (6) Unbalance of the impeller brought on by fouling or international physique (seven) Anchor bolts or other fasteners are loosened |
(one)Exchange bearings or bearing seat (two)Reassemble gear and ensure backlash (3)Cleaning blower, examine the case is damaged (4)Check out the back pressure, verify the wheel and adjust hole (five)Check the filter and back pressure, increase the hole between the impeller inlet and the casing (6)Clear the impeller and the casing, to guarantee that the impeller clearance operate (seven) Tighten the anchor bolts and leveling the base. |
7 | Motor overload |
(one)When compared with the essential pressure, the force difference is massive that the back again strain or the inlet force is high (2) In contrast with the equipment demands, blower movement is way too massive, so its strain boosts (3)Inlet filter is blocked, or outlet pipe is obstructed or blocked (four) Collusion or friction (trapped) rotating components (5) The oil degree is as well large (6) Narrow V-belt is overheat, vibration is way too big, or pulley is also small |
(one) Minimize the force to the specified price (two) Exhaust the excess gas into the atmosphere or lessen the blower velocity (three) Take away the obstructions (four)Immediately shut down, check the reason (five) Alter the oil to the appropriate amount (6) Check out the belt stress, and replaced it with large diameter pulley. |
Our Services
one. Pre market service two. Soon after promote service
a. recommend the ideal model c. on the web complex assistance,
b. factory tour d. total existence spare components and techinical support
Gurantee
12 months gurantee for our roots blowers
/ The use of unique equipment manufacturer’s (OEM) portion numbers or emblems , e.g. CASE® and John Deere® are for reference reasons only and for indicating product use and compatibility. Our organization and the shown EPT parts contained herein are not sponsored, accepted, or produced by the OEM. /