We – EPG Group the largest couplings and gears factory in China with 5 different branches. For more specifics: Cell/whatsapp/telegram/Kakao us at: 0086-13083988828 /
We make all types of roots blower, centrifugal blower, Our Major products are as underneath:
Kind |
Diameter |
Fee of stream |
Strain |
ESR-MJ(Intensive Variety) |
Φ50~Φ300mm |
.5~140m³/min |
9.8KPa~98.8Kpa |
ESR(Normal Type) |
Φ50~Φ350mm |
.5~140m³/min |
9.8KPa~78.4Kpa |
ESR-H(Large-force Variety) |
Φ50~Φ350mm |
.seven~160m³/min |
58.8KPa~ninety eight.8Kpa |
ESR-V(Vacuum Pump) |
Φ50~Φ350mm |
.5~160m³/min |
nine.8KPa~fifty three.3Kpa |
EL Sequence |
Φ200~Φ600mm |
twenty.three~750m³/min |
nine.8KPa~58.8Kpa |
Multistage Centrifugal Blower or C-Sequence |
Φ250~Φ500mm |
50~500m³/min |
9.8KPa~98Kpa |
ERR-ERG Variety |
Φ250~Φ500mm |
120~420m³/min |
9.8KPa~98.8Kpa |
The functioning basic principle of the a few-blade roots blower: two a few-lobed rotors are organized in the cavity, and the
suction port and the discharge port are opened on equally sides of the cavity. By way of the action 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 attain the
function of blowing.
Function of our roots blower:
one. Massive adjustment of the air quantity
2. Low Noise
three. Large efficiency
4. Lower power cosumption
5. Lengthy time daily life
six. Trustworthy working, simple servicing,little footprint
The parameters of our roots blower:
Type |
Ratary Velocity (r/min) |
Pressure Rise (Kpa) |
Capability (m/min) |
Shaft Electrical power (Kw) |
Motor |
Device Maximn Excess weight(Kg) |
Electricity (Kw) |
ESR-50 |
1100-2120 |
nine.8-fifty eight.eight |
.sixty five-two.58 |
.three-3.54 |
.75-4 |
128-158 |
ESR-65 |
1100-2130 |
nine.8-fifty eight.8 |
.94-three.sixty six |
.38-four.forty six |
.seventy five-five.5 |
155-185 |
ESR-eighty |
1140-1900 |
nine.eight-fifty eight.eight |
two.34-5.forty three |
one.04-7.forty two |
2.2-eleven |
one hundred fifty five-277 |
ESR-one hundred |
1060-1980 |
9.eight-fifty eight.eight |
4.57-9.05 |
1.35-twelve.fifteen |
three-fifteen |
309-377 |
ESR-a hundred twenty five |
980-1850 |
nine.eight-58.8 |
five.35-12.four |
1.sixty five-five.19 |
five.five-18.5 |
408-451 |
ESR-125C |
970-1830 |
nine.8-fifty eight.eight |
seven.five-seventeen.fifty seven |
three.two-eighteen.five |
4-22 |
408-451 |
ESR-one hundred fifty |
810-1730 |
9.8-fifty eight.8 |
10.37-27.15 |
3.eighty four-40.82 |
seven.five-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 |
9.8-58.eight |
19.sixty five-44.eight |
10.15-sixty.44 |
fifteen-75 |
1272-1546 |
ESR-two hundred |
810-1480 |
nine.eight-fifty eight.8 |
27.sixty five-fifty nine.two |
eight.05-80,twelve |
fifteen-90 |
1272-1546 |
ESR-250B |
1100-1480 |
nine.8-fifty eight.eight |
fifty four.77-77.55 |
19.97-90.97 |
30-one hundred ten |
1490-2454 |
ESR-250 |
990-1480 |
nine.8-58.eight |
sixty one.4-97.fifty two |
twenty.1-117.3 |
thirty-132 |
1490-2454 |
ESR-three hundred |
990-1480 |
nine.8-58.8 |
87.1-138.one |
26.4-167.8 |
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 |
63.7-98 |
.forty five-two.02 |
two.05-6.twelve |
3-seven.five |
160–one hundred seventy |
ESR-65H |
1240-2130 |
63.seven-ninety eight |
.seventy eight-two.53 |
2.89-seven.fifty five |
four-11 |
198-230 |
ESR-80H |
1140-1900 |
63.seven-98 |
one.eighty two-4.55 |
4.09-ten.1 |
five.5-fifteen |
316-326 |
ESR-100H |
1060-1980 |
sixty three.7-ninety eight |
2.65-eight.06 |
six.36-17.two |
seven.five-22 |
398-459 |
ESR-125H |
980-1850 |
sixty three.7-ninety eight |
four.64-eleven.23 |
eight.ninety two-24.two |
eleven-30 |
544-630 |
ESR-150H |
810-1730 |
63.seven-98 |
9.53-25.seventy six |
17.16-65 |
18.5-seventy five |
752-1571 |
ESR-200H |
810-1480 |
sixty three.7-98 |
25.34-56.92 |
forty two.34-one hundred twenty |
55-132 |
1426-1934 |
ESR-250H |
990-1480 |
sixty three.seven-ninety eight |
fifty eight-93.seven |
eighty three.two-205 |
ninety-220 |
2980-3468 |
ESR300H |
990-1480 |
63.7-98 |
86.nine-134.1 |
114.seven-270 |
132-280 |
3476-3998 |
ERF-245 |
650-980 |
nine.8-ninety eight |
47.five-97.4 |
16-183 |
eighteen.5-200 |
3630-3690 |
ERF-250 |
650-980 |
nine.8-ninety eight |
61.6-a hundred and twenty.4 |
19-227 |
22-250 |
4450-4500 |
ERF-290 |
650-980 |
9.eight-78.4 |
ninety two.3-128 |
22-213 |
30-250 |
4890-4710 |
ERF-295 |
650-980 |
9.8-seventy eight.4 |
ninety seven.3-152.5 |
23-227 |
30-250 |
4890-4880 |
ERF-297 |
650-980 |
nine.8-78.4 |
87.five-167.6 |
26-249 |
thirty-280 |
5330-5520 |
ERF-three hundred |
650-980 |
nine.8-78.four |
101.5-188.seven |
29-278 |
37-315 |
5330-5520 |
ERF-350 |
650-980 |
nine.eight-seventy eight.4 |
126-224.9 |
34-249 |
45-280 |
5210-6470 |
ERG-three hundred |
590-730 |
9.8-98 |
128.3-196 |
38-362 |
forty five-four hundred |
9440-15710 |
ERG-350 |
590-730 |
nine.eight-98 |
159.three-231.six |
43-420 |
55-450 |
9700-1571 |
ERG-400 |
590-730 |
9.eight-83.3 |
203.1-290.9 |
52-449 |
75-500 |
10090-11390 |
ERG-445 |
590-730 |
9.eight-seventy three.5 |
229.7-327.eight |
58-477 |
seventy five-560 |
10600-12230 |
ERG-450 |
590-730 |
nine.eight-73.five |
262.4-366.two |
sixty four-496 |
75-560 |
10600-12230 |
ERG-500 |
590-730 |
9.eight-sixty three.seven |
327.four-452.four |
78-529 |
90-560 |
12790-14620 |
ERF-240-V |
650-980 |
-nine.eight- -forty nine |
38.one-78 |
thirteen-seventy six |
18.five-90 |
3420-3285 |
ERF-245-V |
650-980 |
-nine.8- -forty nine |
forty seven.5-ninety seven.four |
16-ninety five |
22-110 |
3425-3360 |
ERF-250-V |
650-980 |
-9.eight- -forty nine |
63-one hundred twenty |
19-117 |
22-132 |
3910-3830 |
ERF-290-V |
650-980 |
-nine.eight- -49 |
seventy two.6-144 |
22-136 |
30-one hundred sixty |
4415-4270 |
ERF-295-V |
650-980 |
-nine.8- -49 |
seventy six.six-152 |
23-a hundred forty five |
thirty-160 |
4425-4485 |
ERF-297-V |
650-980 |
-nine.eight- -forty nine |
eighty four.three-166.8 |
26-a hundred and sixty |
30-180 |
5000-4980 |
ERF-300-V |
650-980 |
-9.eight- -49 |
ninety seven-192 |
29-178 |
37-two hundred |
5000-4980 |
ERF-350-V |
650-980 |
-nine.8- -forty nine |
116-225 |
34-209 |
forty five-250 |
5400-5700 |
ERG-300V |
590-730 |
-nine.8- -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 |
-9.8- -forty nine |
199-290 |
52-269 |
75-315 |
9900-10130 |
ERG-445V |
590-730 |
-9.8- -49 |
224.eight-326.9 |
fifty eight-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 |
-nine.eight- -forty nine |
314-452 |
seventy eight-412 |
132-450 |
13630-13850 |
ERF-245W |
650-980 |
-13.three- -fifty three.three |
53.five-one zero one |
21.five-102 |
30-a hundred and ten |
3630-3360 |
ERF-250W |
650-980 |
-13.3- -fifty three.three |
sixty nine-127 |
26.five-127 |
thirty-160 |
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 |
-thirteen.3- -53.3 |
87-158 |
32-158 |
37-185 |
4440-4580 |
ERF-297W |
650-980 |
-thirteen.three- -53.three |
95-174 |
36-174 |
forty five-200 |
5230-5130 |
ERF-300W |
650-980 |
-thirteen.three- -fifty three.three |
109-195 |
40-193 |
55-220 |
5230-5130 |
ERF-350W |
650-980 |
-13.3- -53.three |
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 |
-13.3- -53.three |
168-234.4 |
fifty nine-235.five |
75-280 |
9500-9600 |
ERG-400W |
590-730 |
-13.three- -53.three |
220-276.six |
71-292 |
90-315 |
9900-10130 |
ERG-445W |
590-730 |
-thirteen.3- -fifty three.3 |
244-294.6 |
eighty two-331 |
90-400 |
11230-11300 |
ERG450W |
590-730 |
-thirteen.three- -53.three |
275-368.5 |
91-366 |
a hundred and ten-four hundred |
11230-11300 |
ETRF-250 (240,250) |
650-980 |
ninety eight-196 |
64.eight-112 |
a hundred thirty five-355 |
one hundred sixty-400 |
8700-8600 |
ETRF-295 (245,295) |
650-980 |
98-196 |
80.8-139 |
167-439 |
185-five hundred |
9200-9100 |
ETRF-three hundred (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-four hundred (300,400) |
590-740 |
ninety eight-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 |
-fifty three.three–eighty |
seventy two-121 |
seventy five.six-121 |
90-160 |
6100-6470 |
ETRF-295W (245/295) |
650-980 |
-fifty three.three–eighty |
93.8-154 |
ninety nine.5-186 |
a hundred and ten-220 |
7000-6400 |
ETRF-300W (2505/300) |
650-980 |
-53.three–80 |
116-189 |
115-220 |
132-250 |
7750-7760 |
EL81WD |
580-980 |
nine.8-fifty eight.8 |
fifty four.two-a hundred thirty |
eighteen-151 |
45-185 |
3595 |
EL82WDB |
580-980 |
9.8-fifty eight.8 |
seventy two.eight-161 |
22-191 |
45-220 |
3860 |
EL83WDA |
580-980 |
nine.8-58.nine |
one hundred and one-213 |
28.5-202 |
45-220 |
4300 |
EL84WDA |
580-980 |
9.8-fifty eight.eight |
129-267 |
35.4-252 |
forty five-280 |
4720 |
EL93WDA |
580-730 |
9.8-49 |
230-329 |
56.four-311 |
seventy five-355 |
7765 |
EL94WDA |
580-730 |
9.8-49 |
263-373 |
sixty four-353 |
seventy five-400 |
8130 |
EL95WDA |
490-580 |
9.8-fifty eight.8 |
308-434 |
eighty one.four-414 |
90-450 |
11500 |
EL96WDA |
580 |
fifty eight.eight |
381 |
497 |
560 |
11500 |
E397WN |
one thousand-1650 |
forty |
5-9 |
|
|
|
E408WN |
870-1650 |
forty |
10-22 |
|
|
|
E517WN |
980-1580 |
40 |
20-30 |
|
|
|
E520WN |
930-1550 |
40 |
24-forty five |
|
|
|
E607WN |
750-1250 |
forty |
forty five-seventy six |
|
|
|
E610WN |
750-1250 |
40 |
seventy five-130 |
|
|
|
Spare parts and construction of our roots blower:
Package of our Roots Blower
Pack into iron case, two layer,blower entire body and motor in reduced layer, inlet/out silencer and so on in higher layer
Roots blower pack strategy identical as iron circumstance, just modify to Fumigation Totally free Plywood Situation
Our manufacturing facility is a professional company of Roots blowers which has above 20 years’ experience in machinery
manufacturing. It is located in Xihu (West Lake) Dis. East Industrial Park, fifty kilometers to the east of Shan EPT provincial
funds— HangZhou. Our firm also has handy visitors transportation, as it is 15 kilometers away from
Diaozhen Town station of HangZhou-HangZhou expressway, and 30 kilometers away from East HangZhou station of
ZheJiang -ZheJiang expressway.The major solution of our organization is ESR -sort Roots Blower. The roots
vacuum pump is a new variety of higher-performance roots blower, which is created independently primarily based on the
domestic and international superior systems. A number of patented technologies have been adopted on Roots
Blower, and therefore we have produced considerable results in energy conservation and noise reduction, etc.. So far, our
company has invested far more than 30,000,000 RMB to introduce such superior skilled gear as
horizontal machining middle, vertical machining centre, two-way CNC floor planer, CNC lathe, CNC milling
device, CNC planer, airplane grinder, cylindrical grinding machine, and a few coordinates tests machine.
In addition to, we have taken numerous steps to standardize the procedure flow this sort of as operating and cooperating
with a lot of scientific research units, colleges and universities at residence and overseas. We also continuously try out to
take in and enhance the domestic innovative creation technologies, so as to encourage the upgrading and
optimization of the solution and make the item high quality get to the advanced amount at home and abroad.
ESR -sort Roots Blower contains numerous series these kinds of as A few-leaves Type, Two-leaves Kind and Centrifugal
Variety,which can be even more divided to hundreds of versions. The products are widely employed in sewage remedy,
pneumatic conveying,vacuum packaging, aquaculture, food processing, EPT electricity, petrochemical, cement,
mining and other industries. Our merchandise have this kind of rewards as reduced noise, vitality saving, stable quality,
and lengthy provider lifestyle, and many others.. With the product sales outlets throughout the domestic funds cities, our products promote effectively all
above the region, and have been exported to North The usa,Russia, Malaysia, Indonesia, Vietnam, South Africa
and some other international locations. Possessing got the ISO9001 Worldwide Good quality Program Certification, we have
recognized and improved the good quality assurance of the products planning, manufacturing, and set up.
From the approach of layout, investigation and development to the finished goods, we have acquired the total
method controlled independently, as a result providing the total foundation and dependability guarantee for the products balance
and sturdiness. Possessing a perfect sales community and right after-sales services, we give our clients with higher-
quality and much more successful services.All employees of our organization sincerely welcome the broad masses of friends to
information, and negotiate business with us.
Our Roots Blower Workshop
Doosn Horzitonal Device Middle
The Application of the Roots Blower
Routine maintenance and inspection
(1) Examine all fasteners and finding pins circumstances no matter whether they are loosening.
(two) Constantly examine regardless of whether the leakage phenomenon of the human body.
(three) Pay interest to lubrication, volume of grease and noises when operating,
determine regardless of whether it functions below the essential problems.
(4) Lubricant & grease: The lubricant is for medium load industrial equipment oil
(quality 220, kinematic viscosity of 198 ~ 242mm2 / s 40ºC, flash position ≥ 200ºC)
The grease is butter (artificial lithium grease penetration 220-250, fall point ≥
190ºC). Substitute the lubricant and grease after initial two hundred hrs operating, and exchange
once again right after a moth operating. Afterwards, change the lubricant and grease according to the
environment and lubricant (grease) high quality propose a suitable EPT for three
months.
(five) Constantly check out the inlet air filter, cleanse or substitute the filter in time.
(six) Blower overload sometimes not immediately exhibited, so pay out interest to
the consumption and exhaust stress, bearing temperature and the present boost trends
of motor to figure out whether or not the blower functions usually
(7) Before disassembling the blower, the assembling relation and dimensions
need to be recorded or calculated, make marks on elements to guarantee the authentic
needs following assembling.
(8) When freshly machine or overhaul, the oil tank need to be cleaned just before use
and propose substitute all grease following eight several hours operating.
Widespread failure reason and troubleshooting
No |
Failure |
Possible motives |
Elimination techniques |
one |
Friction amongst the impeller |
(1) Impurities on the impeller, resulting in the hole is too small (two) Gear put on, resulting in a large backlash (3) The equipment is not well fastened, can not keep the impeller synchronization (4) Bearing dress in ensuing in clearance growing. |
(1) Remove filth and verify whether or not there is injury elements (2) Modify the equipment gap, replace the gears if the gear backlash is increased than the regular 30% to fifty% (3)Re-assemble the gears, preserve the taper contact area is to seventy five% (four)Replace the bearing |
2 |
Collision amongst impeller and wall, the impeller best and casing |
(one) Installation gap is not correct (2) running pressure is also substantial, exceeding the specified benefit (three) Functioning temperature is also substantial (four) Casing or foundation deformation, positioning enthusiast failure (five) Bearing axial place is not very good |
(1) Modify the hole (two) Recognize causes of overloading, reduced the strain to the specified price (3) Examine the installation accuracy and minimize the pipe rigidity (4) Examine and restore bearings, and to make certain the clearance (five)Relocation |
3 |
Temperature way too substantial |
(one) Oil in tank is also considerably, way too thick or too filthy (two) Filter or silencer is blocked (three)The strain is larger than the specified benefit (four)Excessive dress in of the impeller, huge hole (5)Poor ventilation, indoor temperature is large, ensuing in inlet air’s higher temperature (six) The rotating velocity is also minimal,consequence in the belt slipping. |
(1)Minimize the oil stage or depend on oil (2)Get rid of of blocking objects (three)Minimizing the strain through the blower (4)Repair its clearance (5)Open vents to reduce area temperature (6) Improve speed to prevent the belt slipping. |
4 |
Inadequate flow |
(1) The inlet filter is blocked (2) Impeller wear and the gap will increase way too significantly (3) Belt slipping (4) Huge imports strain reduction (five) Pipeline ventilation leakage |
(one) Thoroughly clean the filter dust and obstruction (2) Mend the gap (3)Tighten the belt and increase the number of belts (four)Alter the inlet force to the specified benefit (five) Check and restore the pipeline |
five |
Oil leaking or oil leaking into the enclosure |
(1)Substantial tank situation cause leakage from the discharge port (2) Seal put on, resulting in shaft oil spills (3) The strain is larger than the specified price |
(one)Minimize the oil level (two)Exchange the seals (three)Very clear the air vents, 2mm diameter faucet is fastened in the center chamber, open the faucet underneath the wall |
6 |
Irregular vibration and sounds |
(1)Bearing clearance exceeds the specified worth or bearing use (two) The equipment backlash is way too big, not in a limited fixed (3) The international objects and dust brought on by the impeller and the impeller, the impeller and the housing collision (four) the impeller shaft deformation caused the collision induced by overload, (five) Friction between the impeller and the inlet housing induced by overheating (6) Unbalance of the impeller caused by fouling or foreign entire body (seven) Anchor bolts or other fasteners are loosened |
(1)Exchange bearings or bearing seat (2)Reassemble equipment and make sure backlash (3)Cleansing blower, check out the situation is damaged (4)Check the again stress, verify the wheel and modify gap (five)Verify the filter and again strain, improve the hole between the impeller inlet and the casing (6)Clean the impeller and the casing, to guarantee that the impeller clearance work (7) Tighten the anchor bolts and leveling the foundation. |
7 |
Motor overload |
(one)When compared with the essential force, the strain variation is massive that the back strain or the inlet force is large (2) In comparison with the gear demands, blower stream is way too large, so its stress raises (3)Inlet filter is blocked, or outlet pipe is obstructed or blocked (four) Collusion or friction (trapped) rotating components (five) The oil level is way too large (six) Slender V-belt is overheat, vibration is way too massive, or pulley is way too little |
(one) Reduce the force to the specified price (2) Exhaust the surplus gas into the atmosphere or decrease the blower speed (3) Take away the obstructions (four)Quickly shut down, verify the cause (five) Modify the oil to the appropriate amount (6) Check the belt stress, and changed it with massive diameter pulley. |
Our Support
1. Pre market service 2. Right after market service
a. advocate the appropriate model c. on the web technological assist,
b. manufacturing unit tour d. total existence spare areas and techinical assistance
Gurantee
12 months gurantee for our roots blowers
/ The use of first equipment manufacturer’s (OEM) component figures or emblems , e.g. CASE® and John Deere® are for reference purposes only and for indicating merchandise use and compatibility. Our business and the listed EPT parts contained herein are not sponsored, approved, or produced by the OEM. /