We – EPG Team the greatest couplings and gears manufacturing facility in China with 5 distinct branches. For much more information: Mobile/whatsapp/telegram/Kakao us at: 0086-13083988828 /
We make all kinds of roots blower, centrifugal blower, Our Primary merchandise are as under:
Type |
Diameter |
Rate of movement |
Pressure |
ESR-MJ(Intensive Kind) |
Φ50~Φ300mm |
.5~140m³/min |
9.8KPa~98.8Kpa |
ESR(Ordinary Kind) |
Φ50~Φ350mm |
.5~140m³/min |
nine.8KPa~78.4Kpa |
ESR-H(Large-force Variety) |
Φ50~Φ350mm |
.seven~160m³/min |
58.8KPa~98.8Kpa |
ESR-V(Vacuum Pump) |
Φ50~Φ350mm |
.five~160m³/min |
9.8KPa~fifty three.3Kpa |
EL Series |
Φ200~Φ600mm |
20.three~750m³/min |
9.8KPa~fifty eight.8Kpa |
Multistage Centrifugal Blower or C-Sequence |
Φ250~Φ500mm |
50~500m³/min |
nine.8KPa~98Kpa |
ERR-ERG Sort |
Φ250~Φ500mm |
a hundred and twenty~420m³/min |
9.8KPa~98.8Kpa |
The operating principle of the 3-blade roots blower: two 3-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 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 accomplish the
goal of blowing.
Attribute of our roots blower:
one. Huge adjustment of the air volume
2. Minimal Sound
three. Higher effectiveness
4. Low energy cosumption
5. Prolonged time existence
6. Trustworthy running, straightforward maintenance,little footprint
The parameters of our roots blower:
Variety |
Ratary Velocity (r/min) |
Strain Increase (Kpa) |
Capability (m/min) |
Shaft Electrical power (Kw) |
Motor |
Device Maximn Weight(Kg) |
Electrical power (Kw) |
ESR-50 |
1100-2120 |
9.eight-58.eight |
.sixty five-2.fifty eight |
.three-3.54 |
.75-four |
128-158 |
ESR-sixty five |
1100-2130 |
nine.eight-58.eight |
.94-three.66 |
.38-4.46 |
.75-five.5 |
a hundred and fifty five-185 |
ESR-eighty |
1140-1900 |
nine.eight-fifty eight.eight |
two.34-5.forty three |
1.04-7.42 |
2.2-11 |
155-277 |
ESR-one hundred |
1060-1980 |
9.8-58.8 |
4.57-nine.05 |
1.35-12.fifteen |
3-15 |
309-377 |
ESR-one hundred twenty five |
980-1850 |
9.8-fifty eight.8 |
five.35-twelve.4 |
1.sixty five-5.19 |
five.5-18.five |
408-451 |
ESR-125C |
970-1830 |
9.8-fifty eight.eight |
seven.5-17.57 |
3.2-eighteen.five |
4-22 |
408-451 |
ESR-150 |
810-1730 |
nine.eight-fifty eight.8 |
10.37-27.fifteen |
three.eighty four-forty.eighty two |
7.five-45 |
688-848 |
ESR-one hundred seventy five |
970-1520 |
9.eight-fifty eight.eight |
19.65-36.65 |
7.2-45.ninety five |
eleven-55 |
980-1080 |
ESR-200B |
740-1450 |
nine.eight-58.8 |
19.sixty five-forty four.8 |
10.15-60.forty four |
15-seventy five |
1272-1546 |
ESR-two hundred |
810-1480 |
9.8-58.8 |
27.sixty five-59.two |
8.05-eighty,12 |
fifteen-ninety |
1272-1546 |
ESR-250B |
1100-1480 |
nine.8-fifty eight.8 |
fifty four.77-77.fifty five |
19.ninety seven-ninety.97 |
thirty-one hundred ten |
1490-2454 |
ESR-250 |
990-1480 |
9.8-fifty eight.8 |
61.4-97.52 |
20.one-117.three |
30-132 |
1490-2454 |
ESR-three hundred |
990-1480 |
9.eight-58.8 |
87.one-138.one |
26.four-167.8 |
37-185 |
3326-3446 |
ESR-350 |
730-1480 |
9.8-58.8 |
seventy eight.41-177.31 |
|
fifty five-250 |
|
ESR-50H |
1230-2120 |
63.seven-ninety eight |
.45-two.02 |
two.05-six.12 |
3-7.5 |
a hundred and sixty–a hundred and seventy |
ESR-65H |
1240-2130 |
sixty three.seven-98 |
.78-2.53 |
two.89-7.fifty five |
four-eleven |
198-230 |
ESR-80H |
1140-1900 |
sixty three.seven-ninety eight |
one.82-4.fifty five |
4.09-ten.one |
5.five-15 |
316-326 |
ESR-100H |
1060-1980 |
63.seven-98 |
two.sixty five-eight.06 |
6.36-17.2 |
7.5-22 |
398-459 |
ESR-125H |
980-1850 |
sixty three.seven-98 |
four.64-11.23 |
8.ninety two-24.two |
eleven-thirty |
544-630 |
ESR-150H |
810-1730 |
63.7-98 |
9.53-25.seventy six |
17.sixteen-65 |
18.5-75 |
752-1571 |
ESR-200H |
810-1480 |
63.seven-98 |
twenty five.34-56.ninety two |
forty two.34-120 |
fifty five-132 |
1426-1934 |
ESR-250H |
990-1480 |
sixty three.7-ninety eight |
58-ninety three.seven |
eighty three.two-205 |
ninety-220 |
2980-3468 |
ESR300H |
990-1480 |
sixty three.7-98 |
86.nine-134.1 |
114.seven-270 |
132-280 |
3476-3998 |
ERF-245 |
650-980 |
9.8-98 |
forty seven.5-97.4 |
16-183 |
18.five-200 |
3630-3690 |
ERF-250 |
650-980 |
nine.8-98 |
61.six-one hundred twenty.4 |
19-227 |
22-250 |
4450-4500 |
ERF-290 |
650-980 |
nine.8-78.4 |
ninety two.3-128 |
22-213 |
30-250 |
4890-4710 |
ERF-295 |
650-980 |
nine.8-seventy eight.four |
ninety seven.3-152.five |
23-227 |
thirty-250 |
4890-4880 |
ERF-297 |
650-980 |
nine.8-78.four |
87.5-167.six |
26-249 |
30-280 |
5330-5520 |
ERF-three hundred |
650-980 |
9.eight-seventy eight.four |
101.5-188.seven |
29-278 |
37-315 |
5330-5520 |
ERF-350 |
650-980 |
nine.8-78.4 |
126-224.nine |
34-249 |
45-280 |
5210-6470 |
ERG-three hundred |
590-730 |
nine.8-98 |
128.three-196 |
38-362 |
forty five-four hundred |
9440-15710 |
ERG-350 |
590-730 |
9.8-98 |
159.three-231.six |
43-420 |
55-450 |
9700-1571 |
ERG-400 |
590-730 |
9.8-83.three |
203.1-290.9 |
fifty two-449 |
seventy five-five hundred |
10090-11390 |
ERG-445 |
590-730 |
nine.eight-seventy three.5 |
229.seven-327.eight |
fifty eight-477 |
seventy five-560 |
10600-12230 |
ERG-450 |
590-730 |
nine.eight-73.5 |
262.4-366.two |
64-496 |
75-560 |
10600-12230 |
ERG-500 |
590-730 |
9.8-sixty three.7 |
327.four-452.4 |
78-529 |
90-560 |
12790-14620 |
ERF-240-V |
650-980 |
-9.eight- -forty nine |
38.1-seventy eight |
13-76 |
18.five-ninety |
3420-3285 |
ERF-245-V |
650-980 |
-nine.eight- -forty nine |
47.five-97.four |
16-ninety five |
22-one hundred ten |
3425-3360 |
ERF-250-V |
650-980 |
-nine.8- -49 |
sixty three-a hundred and twenty |
19-117 |
22-132 |
3910-3830 |
ERF-290-V |
650-980 |
-9.8- -forty nine |
72.6-144 |
22-136 |
thirty-160 |
4415-4270 |
ERF-295-V |
650-980 |
-nine.eight- -49 |
76.six-152 |
23-145 |
thirty-one hundred sixty |
4425-4485 |
ERF-297-V |
650-980 |
-nine.8- -49 |
84.3-166.eight |
26-one hundred sixty |
30-one hundred eighty |
5000-4980 |
ERF-300-V |
650-980 |
-9.eight- -49 |
97-192 |
29-178 |
37-200 |
5000-4980 |
ERF-350-V |
650-980 |
-nine.eight- -forty nine |
116-225 |
34-209 |
forty five-250 |
5400-5700 |
ERG-300V |
590-730 |
-nine.eight- -49 |
133-193 |
38-184 |
forty five-220 |
7800-9100 |
ERG-350V |
590-730 |
-9.eight- -49 |
163-231 |
43-216 |
55-250 |
9500-9470 |
ERG-400V |
590-730 |
-nine.eight- -forty nine |
199-290 |
fifty two-269 |
75-315 |
9900-10130 |
ERG-445V |
590-730 |
-nine.eight- -forty nine |
224.eight-326.nine |
58-303 |
75-355 |
9900-10130 |
ERG-450V |
590-730 |
-9.8- -49 |
255-365 |
sixty four-335 |
75-four hundred |
11230-11300 |
ERG-500V |
590-730 |
-9.eight- -49 |
314-452 |
seventy eight-412 |
132-450 |
13630-13850 |
ERF-245W |
650-980 |
-thirteen.3- -fifty three.three |
53.five-one zero one |
21.5-102 |
30-a hundred and ten |
3630-3360 |
ERF-250W |
650-980 |
-thirteen.3- -53.3 |
sixty nine-127 |
26.five-127 |
30-160 |
3985-4115 |
ERF-290W |
650-980 |
-13.3- -fifty three.three |
82.6-a hundred and fifty |
30.five-149 |
37-185 |
4340-4580 |
ERF-295W |
650-980 |
-13.three- -fifty three.three |
87-158 |
32-158 |
37-185 |
4440-4580 |
ERF-297W |
650-980 |
-13.three- -fifty three.three |
ninety five-174 |
36-174 |
forty five-two hundred |
5230-5130 |
ERF-300W |
650-980 |
-13.three- -fifty three.3 |
109-195 |
forty-193 |
fifty five-220 |
5230-5130 |
ERF-350W |
650-980 |
-13.3- -fifty three.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 |
-13.3- -53.three |
168-234.4 |
59-235.five |
75-280 |
9500-9600 |
ERG-400W |
590-730 |
-thirteen.3- -fifty three.three |
220-276.6 |
71-292 |
90-315 |
9900-10130 |
ERG-445W |
590-730 |
-13.three- -fifty three.3 |
244-294.six |
eighty two-331 |
90-400 |
11230-11300 |
ERG450W |
590-730 |
-thirteen.3- -53.3 |
275-368.five |
ninety one-366 |
110-400 |
11230-11300 |
ETRF-250 (240,250) |
650-980 |
98-196 |
64.eight-112 |
one hundred thirty five-355 |
a hundred and sixty-400 |
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 |
ninety eight-176.four |
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 (three hundred,four hundred) |
590-740 |
ninety eight-176.4 |
205-273 |
380-773 |
450-900 |
21350-24200 |
ETRG-450 (350,450) |
590-740 |
98-176.4 |
263-428 |
476-955 |
560-1000 |
24200-27600 |
ETRF-250W (240,250) |
650-980 |
-53.3–eighty |
72-121 |
75.6-121 |
90-a hundred and sixty |
6100-6470 |
ETRF-295W (245/295) |
650-980 |
-fifty three.3–eighty |
93.8-154 |
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 |
9.eight-58.eight |
54.two-130 |
eighteen-151 |
forty five-185 |
3595 |
EL82WDB |
580-980 |
9.8-58.8 |
seventy two.eight-161 |
22-191 |
forty five-220 |
3860 |
EL83WDA |
580-980 |
nine.eight-fifty eight.nine |
one hundred and one-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.four-311 |
seventy five-355 |
7765 |
EL94WDA |
580-730 |
9.8-49 |
263-373 |
64-353 |
75-four hundred |
8130 |
EL95WDA |
490-580 |
9.eight-fifty eight.eight |
308-434 |
81.4-414 |
90-450 |
11500 |
EL96WDA |
580 |
fifty eight.eight |
381 |
497 |
560 |
11500 |
E397WN |
1000-1650 |
40 |
5-9 |
|
|
|
E408WN |
870-1650 |
forty |
ten-22 |
|
|
|
E517WN |
980-1580 |
40 |
twenty-thirty |
|
|
|
E520WN |
930-1550 |
forty |
24-forty five |
|
|
|
E607WN |
750-1250 |
40 |
45-76 |
|
|
|
E610WN |
750-1250 |
40 |
seventy five-130 |
|
|
|
Spare elements and structure of our roots blower:
Package of our Roots Blower
Pack into iron circumstance, two layer,blower human body and motor in reduce layer, inlet/out silencer and many others in upper layer
Roots blower pack method exact same as iron situation, just modify to Fumigation Free Plywood Scenario
Our factory is a specialist manufacturer of Roots blowers which has above twenty years’ experience in machinery
producing. It is situated in Xihu (West Lake) Dis. East Industrial Park, 50 kilometers to the east of Shan EPT provincial
funds— HangZhou. Our business also has handy site visitors 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 leading merchandise of our firm is ESR -kind Roots Blower. The roots
vacuum pump is a new type of substantial-performance roots blower, which is developed independently based on the
domestic and international sophisticated technologies. Several patented technologies have been adopted on Roots
Blower, and as a result we have made important outcomes in energy conservation and noise reduction, and many others.. So considerably, our
firm has invested a lot more than 30,000,000 RMB to introduce such sophisticated professional equipment as
horizontal machining centre, vertical machining heart, two-way CNC floor planer, CNC lathe, CNC milling
equipment, CNC planer, plane grinder, cylindrical grinding equipment, and 3 coordinates tests device.
Besides, we have taken various measures to standardize the process circulation this kind of as functioning and cooperating
with many scientific research units, schools and universities at property and overseas. We also constantly attempt to
absorb and boost the domestic sophisticated creation technologies, so as to advertise the upgrading and
optimization of the item and make the merchandise quality get to the superior amount at home and overseas.
ESR -type Roots Blower includes many sequence this kind of as A few-leaves Variety, Two-leaves Type and Centrifugal
Type,which can be more divided to hundreds of kinds. The merchandise are commonly utilised in sewage therapy,
pneumatic conveying,vacuum packaging, aquaculture, foodstuff processing, EPT electrical power, petrochemical, cement,
mining and other industries. Our merchandise have such positive aspects as minimal sound, power preserving, steady quality,
and lengthy services life, and many others.. With the revenue outlets throughout the domestic capital towns, our items offer effectively all
over the region, and have been exported to North America,Russia, Malaysia, Indonesia, Vietnam, South Africa
and some other countries. Having got the ISO9001 International Top quality System Certification, we have
established and improved the high quality assurance of the products developing, production, and set up.
From the method of style, investigation and advancement to the completed goods, we have got the total
process managed independently, therefore supplying the complete basis and dependability ensure for the items steadiness
and sturdiness. Having a perfect income network and right after-product sales service, we give our consumers with greater-
good quality and a lot more productive services.All staff of our firm sincerely welcome the broad masses of friends to
information, and negotiate business with us.
Our Roots Blower Workshop
Doosn Horzitonal Device Middle
The Software of the Roots Blower
Upkeep and inspection
(1) Examine all fasteners and finding pins circumstances regardless of whether they are loosening.
(two) Always verify no matter whether the leakage phenomenon of the physique.
(three) Spend focus to lubrication, quantity of grease and noises when working,
decide whether it works beneath the needed circumstances.
(4) Lubricant & grease: The lubricant is for medium load industrial equipment oil
(quality 220, kinematic viscosity of 198 ~ 242mm2 / s 40ºC, flash level ≥ 200ºC)
The grease is butter (synthetic lithium grease penetration 220-250, drop stage ≥
190ºC). Exchange the lubricant and grease soon after very first two hundred several hours operating, and change
once again after a moth working. Afterwards, exchange the lubricant and grease in accordance to the
environment and lubricant (grease) high quality suggest a appropriate EPT for a few
months.
(five) Often check the inlet air filter, thoroughly clean or change the filter in time.
(6) Blower overload at times not quickly exhibited, so spend attention to
the consumption and exhaust force, bearing temperature and the current boost traits
of motor to figure out regardless of whether the blower works generally
(seven) Prior to disassembling the blower, the assembling relation and dimensions
should be recorded or calculated, make marks on elements to make sure the unique
specifications soon after assembling.
(8) When freshly device or overhaul, the oil tank must be cleaned just before use
and propose change all grease right after eight hrs working.
Widespread failure purpose and troubleshooting
No |
Failure |
Possible causes |
Elimination techniques |
1 |
Friction among the impeller |
(1) Impurities on the impeller, ensuing in the gap is too tiny (2) Equipment dress in, resulting in a big backlash (3) The equipment is not effectively mounted, can not preserve the impeller synchronization (4) Bearing dress in ensuing in clearance increasing. |
(one) Take away dust and check no matter whether there is hurt elements (2) Modify the gear hole, substitute the gears if the gear backlash is better than the typical 30% to 50% (3)Re-assemble the gears, maintain the taper speak to location is to seventy five% (four)Change the bearing |
2 |
Collision in between impeller and wall, the impeller leading and casing |
(1) Installation gap is not right (2) running force is also large, exceeding the specified value (3) Functioning temperature is also high (4) Casing or foundation deformation, positioning fan failure (5) Bearing axial location is not good |
(one) Alter the hole (2) Recognize brings about of overloading, reduced the force to the specified worth (three) Verify the set up accuracy and decrease the pipe tension (four) Check out and repair bearings, and to make certain the clearance (5)Relocation |
3 |
Temperature way too high |
(1) Oil in tank is also a lot, also thick or as well filthy (2) Filter or silencer is blocked (three)The strain is higher than the specified value (4)Excessive dress in of the impeller, big gap (five)Bad air flow, indoor temperature is higher, resulting in inlet air’s large temperature (six) The rotating speed is also low,consequence in the belt slipping. |
(1)Decrease the oil amount or rely on oil (two)Eliminate of blocking objects (three)Lowering the strain through the blower (4)Fix its clearance (5)Open up vents to minimize space temperature (six) Increase pace to stop the belt slipping. |
4 |
Insufficient stream |
(one) The inlet filter is blocked (2) Impeller dress in and the gap boosts as well significantly (three) Belt slipping (four) Huge imports pressure loss (5) Pipeline ventilation leakage |
(one) Clear the filter dust and obstruction (2) Repair the hole (3)Tighten the belt and boost the number of belts (4)Alter the inlet force to the specified price (five) Check out and repair the pipeline |
5 |
Oil leaking or oil leaking into the enclosure |
(one)Substantial tank position lead to leakage from the discharge port (two) Seal wear, resulting in shaft oil spills (3) The force is larger than the specified price |
(1)Minimize the oil amount (two)Change the seals (three)Clear the air vents, 2mm diameter faucet is set in the middle chamber, open up the faucet underneath the wall |
6 |
Irregular vibration and sounds |
(1)Bearing clearance exceeds the specified worth or bearing dress in (2) The equipment backlash is also large, not in a limited fastened (three) The international objects and dust brought on by the impeller and the impeller, the impeller and the housing collision (four) the impeller shaft deformation brought on the collision caused by overload, (5) Friction amongst the impeller and the inlet housing triggered by overheating (six) Unbalance of the impeller caused by fouling or international physique (seven) Anchor bolts or other fasteners are loosened |
(1)Change bearings or bearing seat (2)Reassemble equipment and make sure backlash (three)Cleansing blower, check out the situation is broken (four)Check the back again pressure, check the wheel and modify hole (5)Verify the filter and again strain, improve the hole amongst the impeller inlet and the casing (six)Thoroughly clean the impeller and the casing, to guarantee that the impeller clearance work (7) Tighten the anchor bolts and leveling the base. |
7 |
Motor overload |
(one)In comparison with the needed stress, the force variation is massive that the back strain or the inlet stress is high (two) In comparison with the products specifications, blower circulation is as well huge, so its force boosts (3)Inlet filter is blocked, or outlet pipe is obstructed or blocked (4) Collusion or friction (trapped) rotating components (five) The oil degree is way too substantial (six) Narrow V-belt is overheat, vibration is way too massive, or pulley is also tiny |
(one) Reduce the pressure to the specified benefit (two) Exhaust the excessive gas into the ambiance or reduce the blower pace (3) Remove the obstructions (4)Instantly shut down, check out the purpose (5) Adjust the oil to the appropriate degree (six) Examine the belt tension, and replaced it with huge diameter pulley. |
Our Services
one. Pre market service 2. Right after market service
a. recommend the ideal model c. on the web technical assistance,
b. factory tour d. total daily life spare components and techinical help
Gurantee
12 months gurantee for our roots blowers
/ The use of unique equipment manufacturer’s (OEM) element numbers or trademarks , e.g. CASE® and John Deere® are for reference reasons only and for indicating solution use and compatibility. Our company and the listed EPT areas contained herein are not sponsored, accredited, or produced by the OEM. /