We – EPG Team the greatest couplings and gears factory in China with 5 distinct branches. For more details: Mobile/whatsapp/telegram/Kakao us at: 0086-13083988828 /
We make all types of roots blower, centrifugal blower, Our Major items are as beneath:
Kind |
Diameter |
Price of movement |
Force |
ESR-MJ(Intense Sort) |
Φ50~Φ300mm |
.five~140m³/min |
9.8KPa~ninety eight.8Kpa |
ESR(Common Kind) |
Φ50~Φ350mm |
.5~140m³/min |
nine.8KPa~seventy eight.4Kpa |
ESR-H(Substantial-pressure Variety) |
Φ50~Φ350mm |
.7~160m³/min |
58.8KPa~98.8Kpa |
ESR-V(Vacuum Pump) |
Φ50~Φ350mm |
.5~160m³/min |
9.8KPa~fifty three.3Kpa |
EL Sequence |
Φ200~Φ600mm |
20.three~750m³/min |
9.8KPa~fifty eight.8Kpa |
Multistage Centrifugal Blower or C-Collection |
Φ250~Φ500mm |
50~500m³/min |
nine.8KPa~98Kpa |
ERR-ERG Variety |
Φ250~Φ500mm |
one hundred twenty~420m³/min |
nine.8KPa~98.8Kpa |
The functioning principle of the 3-blade roots blower: two three-lobed rotors are arranged in the cavity, and the
suction port and the discharge port are opened on each sides of the cavity. By means 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 accomplish the
objective of blowing.
Characteristic of our roots blower:
1. Big adjustment of the air quantity
2. Lower Sounds
3. Large performance
four. Minimal strength cosumption
five. Lengthy time daily life
6. Reliable working, easy maintenance,tiny footprint
The parameters of our roots blower:
Sort |
Ratary Velocity (r/min) |
Pressure Rise (Kpa) |
Capability (m/min) |
Shaft Energy (Kw) |
Motor |
Device Maximn Bodyweight(Kg) |
Energy (Kw) |
ESR-50 |
1100-2120 |
9.8-58.8 |
.sixty five-2.58 |
.three-three.54 |
.75-4 |
128-158 |
ESR-65 |
1100-2130 |
nine.8-fifty eight.eight |
.94-three.66 |
.38-4.46 |
.75-five.five |
a hundred and fifty five-185 |
ESR-80 |
1140-1900 |
9.eight-58.8 |
2.34-five.43 |
1.04-seven.forty two |
two.two-eleven |
a hundred and fifty five-277 |
ESR-one hundred |
1060-1980 |
9.eight-fifty eight.eight |
four.57-9.05 |
1.35-twelve.fifteen |
three-fifteen |
309-377 |
ESR-125 |
980-1850 |
9.eight-fifty eight.eight |
five.35-12.4 |
1.65-5.19 |
5.5-eighteen.5 |
408-451 |
ESR-125C |
970-1830 |
nine.eight-58.eight |
7.five-17.57 |
three.two-18.five |
four-22 |
408-451 |
ESR-150 |
810-1730 |
nine.eight-58.8 |
10.37-27.15 |
three.84-forty.eighty two |
seven.5-forty five |
688-848 |
ESR-a hundred seventy five |
970-1520 |
9.8-fifty eight.8 |
19.65-36.65 |
7.two-forty five.ninety five |
eleven-55 |
980-1080 |
ESR-200B |
740-1450 |
nine.eight-58.eight |
19.65-44.8 |
ten.15-60.44 |
fifteen-75 |
1272-1546 |
ESR-two hundred |
810-1480 |
nine.eight-58.eight |
27.65-59.2 |
8.05-eighty,12 |
fifteen-ninety |
1272-1546 |
ESR-250B |
1100-1480 |
9.8-58.8 |
54.seventy seven-seventy seven.fifty five |
19.ninety seven-90.ninety seven |
thirty-110 |
1490-2454 |
ESR-250 |
990-1480 |
nine.8-fifty eight.eight |
61.4-ninety seven.52 |
20.one-117.three |
thirty-132 |
1490-2454 |
ESR-300 |
990-1480 |
nine.eight-fifty eight.8 |
87.one-138.1 |
26.four-167.eight |
37-185 |
3326-3446 |
ESR-350 |
730-1480 |
nine.8-fifty eight.eight |
78.forty one-177.31 |
|
55-250 |
|
ESR-50H |
1230-2120 |
sixty three.7-98 |
.45-2.02 |
two.05-six.12 |
three-seven.five |
a hundred and sixty–170 |
ESR-65H |
1240-2130 |
sixty three.seven-ninety eight |
.78-2.53 |
2.89-7.55 |
4-11 |
198-230 |
ESR-80H |
1140-1900 |
63.7-ninety eight |
one.82-4.55 |
4.09-10.1 |
5.5-15 |
316-326 |
ESR-100H |
1060-1980 |
sixty three.seven-ninety eight |
2.65-8.06 |
six.36-17.2 |
seven.5-22 |
398-459 |
ESR-125H |
980-1850 |
63.7-ninety eight |
4.sixty four-11.23 |
eight.92-24.two |
11-thirty |
544-630 |
ESR-150H |
810-1730 |
sixty three.seven-98 |
9.53-25.76 |
17.16-65 |
eighteen.5-seventy five |
752-1571 |
ESR-200H |
810-1480 |
63.7-98 |
twenty five.34-56.92 |
42.34-120 |
fifty five-132 |
1426-1934 |
ESR-250H |
990-1480 |
sixty three.seven-ninety eight |
fifty eight-ninety three.7 |
eighty three.two-205 |
ninety-220 |
2980-3468 |
ESR300H |
990-1480 |
63.7-98 |
86.nine-134.1 |
114.7-270 |
132-280 |
3476-3998 |
ERF-245 |
650-980 |
9.8-ninety eight |
forty seven.5-ninety seven.4 |
sixteen-183 |
eighteen.5-two hundred |
3630-3690 |
ERF-250 |
650-980 |
nine.8-ninety eight |
sixty one.6-120.four |
19-227 |
22-250 |
4450-4500 |
ERF-290 |
650-980 |
9.8-78.4 |
92.3-128 |
22-213 |
30-250 |
4890-4710 |
ERF-295 |
650-980 |
9.eight-seventy eight.4 |
97.3-152.5 |
23-227 |
thirty-250 |
4890-4880 |
ERF-297 |
650-980 |
9.eight-seventy eight.4 |
87.5-167.six |
26-249 |
thirty-280 |
5330-5520 |
ERF-300 |
650-980 |
nine.eight-seventy eight.four |
a hundred and one.5-188.7 |
29-278 |
37-315 |
5330-5520 |
ERF-350 |
650-980 |
9.eight-78.four |
126-224.nine |
34-249 |
45-280 |
5210-6470 |
ERG-300 |
590-730 |
9.8-98 |
128.three-196 |
38-362 |
45-400 |
9440-15710 |
ERG-350 |
590-730 |
9.8-98 |
159.three-231.6 |
forty three-420 |
55-450 |
9700-1571 |
ERG-400 |
590-730 |
nine.8-eighty three.three |
203.1-290.9 |
52-449 |
seventy five-five hundred |
10090-11390 |
ERG-445 |
590-730 |
9.eight-73.5 |
229.seven-327.eight |
fifty eight-477 |
75-560 |
10600-12230 |
ERG-450 |
590-730 |
9.eight-seventy three.5 |
262.4-366.two |
64-496 |
75-560 |
10600-12230 |
ERG-five hundred |
590-730 |
9.eight-63.7 |
327.4-452.four |
78-529 |
90-560 |
12790-14620 |
ERF-240-V |
650-980 |
-9.eight- -49 |
38.one-seventy eight |
thirteen-seventy six |
18.5-ninety |
3420-3285 |
ERF-245-V |
650-980 |
-9.8- -49 |
forty seven.five-ninety seven.four |
16-95 |
22-one hundred ten |
3425-3360 |
ERF-250-V |
650-980 |
-9.8- -forty nine |
63-one hundred twenty |
19-117 |
22-132 |
3910-3830 |
ERF-290-V |
650-980 |
-nine.eight- -49 |
seventy two.six-a hundred and forty four |
22-136 |
thirty-160 |
4415-4270 |
ERF-295-V |
650-980 |
-nine.8- -49 |
76.six-152 |
23-145 |
thirty-one hundred sixty |
4425-4485 |
ERF-297-V |
650-980 |
-9.eight- -forty nine |
84.3-166.eight |
26-a hundred and sixty |
30-one hundred eighty |
5000-4980 |
ERF-300-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 |
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 |
-nine.8- -49 |
163-231 |
forty three-216 |
55-250 |
9500-9470 |
ERG-400V |
590-730 |
-nine.eight- -forty nine |
199-290 |
52-269 |
75-315 |
9900-10130 |
ERG-445V |
590-730 |
-9.8- -49 |
224.eight-326.9 |
58-303 |
seventy five-355 |
9900-10130 |
ERG-450V |
590-730 |
-9.eight- -forty nine |
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 |
-13.three- -fifty three.three |
53.five-a hundred and one |
21.5-102 |
30-a hundred and ten |
3630-3360 |
ERF-250W |
650-980 |
-thirteen.3- -fifty three.three |
69-127 |
26.5-127 |
30-160 |
3985-4115 |
ERF-290W |
650-980 |
-thirteen.three- -53.3 |
82.six-a hundred and fifty |
30.five-149 |
37-185 |
4340-4580 |
ERF-295W |
650-980 |
-13.3- -53.three |
87-158 |
32-158 |
37-185 |
4440-4580 |
ERF-297W |
650-980 |
-13.3- -53.3 |
95-174 |
36-174 |
forty five-two hundred |
5230-5130 |
ERF-300W |
650-980 |
-thirteen.three- -fifty three.three |
109-195 |
40-193 |
55-220 |
5230-5130 |
ERF-350W |
650-980 |
-thirteen.3- -fifty three.3 |
129-230 |
50-230 |
seventy five-250 |
5840-5670 |
ERG-300W |
590-730 |
-thirteen.three- -fifty three.3 |
142-197 |
52-201 |
75-220 |
9100-9000 |
ERF-350W |
590-730 |
-13.three- -fifty three.three |
168-234.4 |
fifty nine-235.5 |
seventy five-280 |
9500-9600 |
ERG-400W |
590-730 |
-13.three- -53.three |
220-276.six |
71-292 |
90-315 |
9900-10130 |
ERG-445W |
590-730 |
-13.three- -fifty three.3 |
244-294.6 |
82-331 |
ninety-400 |
11230-11300 |
ERG450W |
590-730 |
-thirteen.three- -fifty three.3 |
275-368.five |
ninety one-366 |
a hundred and ten-400 |
11230-11300 |
ETRF-250 (240,250) |
650-980 |
ninety eight-196 |
64.8-112 |
a hundred thirty five-355 |
160-four hundred |
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 |
ninety eight-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.four |
263-428 |
476-955 |
560-one thousand |
24200-27600 |
ETRF-250W (240,250) |
650-980 |
-fifty three.3–80 |
72-121 |
seventy five.six-121 |
90-one hundred sixty |
6100-6470 |
ETRF-295W (245/295) |
650-980 |
-fifty three.3–eighty |
93.8-154 |
99.5-186 |
a hundred and ten-220 |
7000-6400 |
ETRF-300W (2505/three hundred) |
650-980 |
-fifty three.three–80 |
116-189 |
one hundred fifteen-220 |
132-250 |
7750-7760 |
EL81WD |
580-980 |
nine.8-fifty eight.8 |
fifty four.two-130 |
18-151 |
forty five-185 |
3595 |
EL82WDB |
580-980 |
nine.eight-fifty eight.eight |
72.8-161 |
22-191 |
forty five-220 |
3860 |
EL83WDA |
580-980 |
nine.eight-fifty eight.nine |
one zero one-213 |
28.5-202 |
45-220 |
4300 |
EL84WDA |
580-980 |
9.8-58.8 |
129-267 |
35.four-252 |
45-280 |
4720 |
EL93WDA |
580-730 |
nine.8-forty nine |
230-329 |
56.four-311 |
seventy five-355 |
7765 |
EL94WDA |
580-730 |
nine.8-forty nine |
263-373 |
sixty four-353 |
seventy five-four hundred |
8130 |
EL95WDA |
490-580 |
nine.8-58.eight |
308-434 |
81.four-414 |
90-450 |
11500 |
EL96WDA |
580 |
fifty eight.eight |
381 |
497 |
560 |
11500 |
E397WN |
one thousand-1650 |
40 |
five-9 |
|
|
|
E408WN |
870-1650 |
40 |
10-22 |
|
|
|
E517WN |
980-1580 |
40 |
twenty-30 |
|
|
|
E520WN |
930-1550 |
forty |
24-forty five |
|
|
|
E607WN |
750-1250 |
forty |
forty five-seventy six |
|
|
|
E610WN |
750-1250 |
forty |
75-a hundred thirty |
|
|
|
Spare parts and framework of our roots blower:
Bundle of our Roots Blower
Pack into iron case, two layer,blower entire body and motor in lower layer, inlet/out silencer and so forth in higher layer
Roots blower pack method very same as iron circumstance, just adjust to Fumigation Cost-free Plywood Case
Our factory is a expert producer of Roots blowers which has in excess of twenty years’ experience in machinery
manufacturing. It is positioned in Xihu (West Lake) Dis. East Industrial Park, fifty kilometers to the east of Shan EPT provincial
cash— HangZhou. Our business also has convenient traffic transportation, as it is 15 kilometers absent from
Diaozhen Town 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 -sort Roots Blower. The roots
vacuum pump is a new variety of higher-efficiency roots blower, which is developed independently based mostly on the
domestic and foreign advanced systems. Several patented technologies have been adopted on Roots
Blower, and hence we have produced important effects in power conservation and noise reduction, and so on.. So considerably, our
company has invested much more than 30,000,000 RMB to introduce these kinds of sophisticated professional tools as
horizontal machining heart, vertical machining center, two-way CNC floor planer, CNC lathe, CNC milling
equipment, CNC planer, airplane grinder, cylindrical grinding equipment, and 3 coordinates testing device.
In addition to, we have taken various actions to standardize the procedure stream such as operating and cooperating
with a lot of scientific research units, faculties and universities at residence and abroad. We also repeatedly try out to
take up and improve the domestic sophisticated creation systems, so as to advertise the upgrading and
optimization of the item and make the item high quality reach the sophisticated stage at residence and overseas.
ESR -variety Roots Blower includes numerous collection this kind of as Three-leaves Variety, Two-leaves Variety and Centrifugal
Kind,which can be more divided to hundreds of kinds. The merchandise are widely utilised in sewage treatment method,
pneumatic conveying,vacuum packaging, aquaculture, meals processing, EPT electricity, petrochemical, cement,
mining and other industries. Our merchandise have this kind of advantages as lower sound, power preserving, steady good quality,
and long services existence, and many others.. With the sales outlets throughout the domestic cash metropolitan areas, our items market effectively all
more than the place, and have been exported to North The us,Russia, Malaysia, Indonesia, Vietnam, South Africa
and some other countries. Possessing obtained the ISO9001 International Quality System Certification, we have
established and enhanced the top quality assurance of the goods developing, production, and set up.
From the process of design and style, research and growth to the completed products, we have obtained the total
procedure managed independently, as a result supplying the complete basis and trustworthiness ensure for the products steadiness
and durability. Getting a perfect income network and after-product sales services, we provide our customers with greater-
quality and a lot more effective support.All workers of our business sincerely welcome the broad masses of friends to
information, and negotiate organization with us.
Our Roots Blower Workshop
Doosn Horzitonal Machine Centre
The Application of the Roots Blower
Upkeep and inspection
(1) Examine all fasteners and finding pins situations no matter whether they are loosening.
(2) Often verify no matter whether the leakage phenomenon of the physique.
(three) Pay out focus to lubrication, sum of grease and noises when working,
determine no matter whether it functions below the needed situations.
(four) Lubricant & grease: The lubricant is for medium load industrial gear oil
(grade 220, kinematic viscosity of 198 ~ 242mm2 / s 40ºC, flash point ≥ 200ºC)
The grease is butter (synthetic lithium grease penetration 220-250, drop level ≥
190ºC). Change the lubricant and grease soon after first two hundred hours working, and substitute
again soon after a moth managing. Later, change the lubricant and grease according to the
environment and lubricant (grease) good quality propose a appropriate EPT for a few
months.
(5) Often verify the inlet air filter, clear or substitute the filter in time.
(six) Blower overload often not quickly exhibited, so pay focus to
the consumption and exhaust strain, bearing temperature and the present improve trends
of motor to establish no matter whether the blower works usually
(7) Just before disassembling the blower, the assembling relation and proportions
must be recorded or calculated, make marks on elements to make sure the original
needs soon after assembling.
(eight) When newly machine or overhaul, the oil tank need to be cleaned before use
and propose exchange all grease after eight hours working.
Frequent failure reason and troubleshooting
No |
Failure |
Attainable factors |
Elimination methods |
1 |
Friction in between the impeller |
(1) Impurities on the impeller, ensuing in the gap is too tiny (2) Equipment use, resulting in a large backlash (three) The gear is not effectively fastened, can not preserve the impeller synchronization (four) Bearing use resulting in clearance escalating. |
(1) Get rid of filth and check whether there is damage areas (2) Change the equipment hole, exchange the gears if the gear backlash is higher than the common thirty% to fifty% (3)Re-assemble the gears, keep the taper speak to area is to 75% (four)Change the bearing |
two |
Collision amongst impeller and wall, the impeller top and casing |
(1) Set up gap is not right (two) running stress is way too large, exceeding the specified worth (3) Functioning temperature is also higher (four) Casing or foundation deformation, positioning admirer failure (5) Bearing axial spot is not excellent |
(one) Alter the gap (2) Identify brings about of overloading, diminished the pressure to the specified worth (three) Examine the set up accuracy and decrease the pipe tension (four) Examine and mend bearings, and to ensure the clearance (five)Relocation |
three |
Temperature as well high |
(1) Oil in tank is as well much, also thick or too dirty (two) Filter or silencer is blocked (three)The force is higher than the specified price (four)Excessive wear of the impeller, big hole (5)Poor air flow, indoor temperature is large, resulting in inlet air’s higher temperature (6) The rotating velocity is too reduced,outcome in the belt slipping. |
(1)Reduce the oil amount or count on oil (two)Remove of blocking objects (three)Lowering the pressure by way of the blower (4)Mend its clearance (5)Open vents to minimize area temperature (six) Improve speed to avoid the belt slipping. |
four |
Inadequate circulation |
(one) The inlet filter is blocked (2) Impeller dress in and the hole increases as well a lot (3) Belt slipping (4) Large imports force loss (five) Pipeline ventilation leakage |
(one) Clear the filter dust and obstruction (2) Mend the gap (three)Tighten the belt and enhance the amount of belts (four)Change the inlet stress to the specified price (five) Check and mend the pipeline |
5 |
Oil leaking or oil leaking into the enclosure |
(one)High tank situation cause leakage from the discharge port (2) Seal dress in, resulting in shaft oil spills (three) The stress is increased than the specified benefit |
(1)Minimize the oil stage (2)Change the seals (3)Obvious the air vents, 2mm diameter faucet is set in the center chamber, open up the faucet under the wall |
six |
Irregular vibration and sounds |
(1)Bearing clearance exceeds the specified benefit or bearing use (two) The gear backlash is way too big, not in a tight fixed (3) The international objects and dust induced by the impeller and the impeller, the impeller and the housing collision (4) the impeller shaft deformation caused the collision brought on by overload, (5) Friction amongst the impeller and the inlet housing caused by overheating (six) Unbalance of the impeller caused by fouling or international entire body (seven) Anchor bolts or other fasteners are loosened |
(1)Substitute bearings or bearing seat (2)Reassemble gear and ensure backlash (three)Cleaning blower, verify the scenario is ruined (four)Check the back again pressure, examine the wheel and modify hole (5)Check out the filter and back strain, increase the hole amongst 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)When compared with the required pressure, the strain big difference is massive that the back strain or the inlet pressure is substantial (2) In comparison with the tools specifications, blower circulation is also large, so its pressure boosts (3)Inlet filter is blocked, or outlet pipe is obstructed or blocked (4) Collusion or friction (trapped) rotating parts (5) The oil degree is as well large (six) Slim V-belt is overheat, vibration is also big, or pulley is too modest |
(1) Decrease the force to the specified value (two) Exhaust the extra gasoline into the atmosphere or reduce the blower speed (three) Take away the obstructions (4)Instantly shut down, check out the reason (5) Change the oil to the appropriate stage (6) Check the belt tension, and replaced it with large diameter pulley. |
Our Service
one. Pre market service two. Following promote service
a. recommend the appropriate model c. on-line technological support,
b. manufacturing unit tour d. complete lifestyle spare areas and techinical support
Gurantee
twelve months gurantee for our roots blowers
/ The use of authentic gear manufacturer’s (OEM) part quantities 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 components contained herein are not sponsored, approved, or produced by the OEM. /