Double Oil Case Water Cooling Roots Blower for Fishery, Pheumatic

Double Oil Case Water Cooling Roots Blower for Fishery, Pheumatic

We make all varieties of roots blower, centrifugal blower, Our Major items are as underneath:

Sort Diameter Price of flow Strain
ESR-MJ(Intensive Variety) Φ50~Φ300mm .5~140m³/min nine.8KPa~ninety eight.8Kpa
ESR(Ordinary Kind) Φ50~Φ350mm .five~140m³/min 9.8KPa~seventy eight.4Kpa
ESR-H(High-stress Sort) Φ50~Φ350mm .7~160m³/min fifty eight.8KPa~98.8Kpa
ESR-V(Vacuum Pump) Φ50~Φ350mm .5~160m³/min nine.8KPa~fifty three.3Kpa
EL Sequence Φ200~Φ600mm twenty.3~750m³/min 9.8KPa~fifty eight.8Kpa
Multistage Centrifugal Blower
or C-Series
Φ250~Φ500mm 50~500m³/min 9.8KPa~98Kpa
ERR-ERG Kind Φ250~Φ500mm a hundred and twenty~420m³/min 9.8KPa~ninety eight.8Kpa

The working 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 equally sides of the cavity. Via 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 attain the
purpose of blowing.

Characteristic of our roots blower:
one. Large adjustment of the air volume
2. Lower Sounds
3. Higher efficiency
four. Lower energy cosumption
5. Extended time lifestyle
six. Reputable operating, effortless servicing,small footprint

The parameters of our roots blower:

Type Ratary Speed
Pressure Rise
Shaft Power
Motor Unit Maximn
ESR-fifty 1100-2120 9.eight-58.8 .sixty five-two.fifty eight .three-3.fifty four .75-4 128-158
ESR-65 1100-2130 9.eight-fifty eight.8 .94-three.sixty six .38-four.46 .seventy five-5.five a hundred and fifty five-185
ESR-80 1140-1900 9.8-58.eight two.34-five.43 one.04-seven.42 two.two-eleven one hundred fifty five-277
ESR-one hundred 1060-1980 nine.eight-fifty eight.8 four.fifty seven-nine.05 1.35-12.15 3-15 309-377
ESR-125 980-1850 9.eight-58.eight 5.35-12.4 one.sixty five-five.19 five.5-eighteen.5 408-451
ESR-125C 970-1830 nine.eight-58.eight seven.five-17.fifty seven three.2-eighteen.five 4-22 408-451
ESR-150 810-1730 9.8-58.8 10.37-27.15 3.84-40.82 seven.five-45 688-848
ESR-one hundred seventy five 970-1520 9.eight-58.eight 19.sixty five-36.sixty five 7.2-forty five.95 11-55 980-1080
ESR-200B 740-1450 nine.eight-fifty eight.eight 19.65-44.eight ten.fifteen-sixty.forty four fifteen-seventy five 1272-1546
ESR-200 810-1480 9.eight-fifty eight.eight 27.sixty five-59.two eight.05-80,12 15-ninety 1272-1546
ESR-250B 1100-1480 nine.8-58.eight fifty four.77-seventy seven.fifty five 19.97-ninety.97 30-one hundred ten 1490-2454
ESR-250 990-1480 9.8-fifty eight.eight 61.4-ninety seven.52 twenty.1-117.3 30-132 1490-2454
ESR-300 990-1480 9.8-fifty eight.8 26.four-167.eight 37-185 3326-3446
ESR-350 730-1480 nine.eight-fifty eight.8 78.forty one-177.31   fifty five-250  
ESR-50H 1230-2120 eight .45-two.02 2.05-6.12 3-7.five one hundred sixty–a hundred and seventy
ESR-65H 1240-2130 sixty three.7-ninety eight .78-2.53 two.89-7.55 4-11 198-230
ESR-80H 1140-1900 1.eighty two-4.55 5.five-15 316-326
ESR-100H 1060-1980 sixty two.sixty five-eight.06 6.36-17.2 7.five-22 398-459
ESR-125H 980-1850 sixty four.64-11.23 8.ninety two-24.two eleven-thirty 544-630
ESR-150H 810-1730 63.7-ninety eight 9.fifty three-25.76 seventeen.16-65 18.five-seventy five 752-1571
ESR-200H 810-1480 sixty eight twenty five.34-56.92 forty two.34-one hundred twenty fifty five-132 1426-1934
ESR-250H 990-1480 sixty three.7-ninety eight fifty eight-ninety three.7 eighty three.two-205 90-220 2980-3468
ESR300H 990-1480 132-280 3476-3998
ERF-245 650-980 nine.8-ninety eight forty seven.five-97.four sixteen-183 eighteen.5-200 3630-3690
ERF-250 650-980 nine.eight-ninety eight 61.6-a hundred and twenty.4 19-227 22-250 4450-4500
ERF-290 650-980 9.8-78.four ninety two.3-128 22-213 thirty-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 nine.eight-seventy eight.four 87.five-167.six 26-249 thirty-280 5330-5520
ERF-300 650-980 9.8-78.4 one zero 29-278 37-315 5330-5520
ERF-350 650-980 9.8-78.four 126-224.9 34-249 forty five-280 5210-6470
ERG-300 590-730 9.8-98 128.3-196 38-362 forty five-four hundred 9440-15710
ERG-350 590-730 nine.8-98 159.3-231.6 43-420 fifty five-450 9700-1571
ERG-four hundred 590-730 nine.eight-eighty three.three 203.1-290.9 52-449 seventy five-500 10090-11390
ERG-445 590-730 nine.8-73.five 229.7-327.eight fifty eight-477 seventy five-560 10600-12230
ERG-450 590-730 nine.8-seventy three.5 262.4-366.2 64-496 75-560 10600-12230
ERG-500 590-730 327.four-452.four 78-529 90-560 12790-14620
ERF-240-V 650-980 -nine.eight- -49 38.1-seventy eight 13-76 18.5-ninety 3420-3285
ERF-245-V 650-980 -9.8- -49 forty seven.5-97.four sixteen-ninety five 22-a hundred and ten 3425-3360
ERF-250-V 650-980 -nine.eight- -forty nine 63-a hundred and twenty 19-117 22-132 3910-3830
ERF-290-V 650-980 -nine.8- -forty nine seventy two.six-one hundred forty four 22-136 thirty-one hundred sixty 4415-4270
ERF-295-V 650-980 -9.eight- -forty nine seventy six.6-152 23-145 30-a hundred and sixty 4425-4485
ERF-297-V 650-980 -9.8- -forty nine 84.three-166.eight 26-one hundred sixty thirty-a hundred and eighty 5000-4980
ERF-three hundred-V 650-980 -9.8- -forty nine ninety seven-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 -nine.8- -49 133-193 38-184 forty five-220 7800-9100
ERG-350V 590-730 -nine.eight- -49 163-231 43-216 55-250 9500-9470
ERG-400V 590-730 -nine.eight- -forty nine 199-290 52-269 75-315 9900-10130
ERG-445V 590-730 -nine.eight- -49 224.eight-326.nine fifty eight-303 seventy five-355 9900-10130
ERG-450V 590-730 -9.8- -forty nine 255-365 64-335 seventy five-four hundred 11230-11300
ERG-500V 590-730 -nine.eight- -forty nine 314-452 78-412 132-450 13630-13850
ERF-245W 650-980 -thirteen.three- -fifty three.three fifty three.5-one hundred and one 21.5-102 thirty-110 3630-3360
ERF-250W 650-980 -13.three- -53.3 sixty nine-127 26.five-127 thirty-160 3985-4115
ERF-290W 650-980 -thirteen.three- -fifty three.three eighty two.6-a hundred and fifty thirty.5-149 37-185 4340-4580
ERF-295W 650-980 -13.three- -fifty three.3 87-158 32-158 37-185 4440-4580
ERF-297W 650-980 -thirteen.3- -53.three ninety five-174 36-174 forty five-200 5230-5130
ERF-300W 650-980 -13.3- -53.3 109-195 40-193 fifty five-220 5230-5130
ERF-350W 650-980 -13.three- -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 75-220 9100-9000
ERF-350W 590-730 -13.3- -53.3 168-234.4 fifty nine-235.5 75-280 9500-9600
ERG-400W 590-730 -thirteen.3- -fifty three.three 220-276.6 seventy one-292 90-315 9900-10130
ERG-445W 590-730 -thirteen.3- -53.3 244-294.six 82-331 ninety-400 11230-11300
ERG450W 590-730 -thirteen.3- -fifty three.3 275-368.5 ninety one-366 110-four hundred 11230-11300
650-980 ninety eight-196 64.8-112 135-355 160-400 8700-8600
650-980 ninety eight-196 80.8-139 167-439 185-500 9200-9100
ETRF-three hundred
650-980 98-176.four 102-174 206-497 250-560 10320-10500
650-980 ninety eight-137.2 124-207 241-473 280-560 10700-11110
ETRG-four hundred
(300,four hundred)
590-740 98-176.four 205-273 380-773 450-900 21350-24200
590-740 98-176.four 263-428 476-955 560-a thousand 24200-27600
650-980 -fifty three.3–eighty 72-121 seventy five.6-121 ninety-one hundred sixty 6100-6470
650-980 -53.3–80 93.eight-154 ninety nine.five-186 one hundred ten-220 7000-6400
(2505/three hundred)
650-980 -fifty three.3–eighty 116-189 115-220 132-250 7750-7760
EL81WD 580-980 9.8-fifty eight.8 54.two-130 eighteen-151 forty five-185 3595
EL82WDB 580-980 nine.eight-fifty eight.8 seventy two.eight-161 22-191 forty five-220 3860
EL83WDA 580-980 nine.8-58.nine one zero one-213 28.five-202 45-220 4300
EL84WDA 580-980 nine.eight-fifty eight.8 129-267 35.four-252 forty five-280 4720
EL93WDA 580-730 9.eight-49 230-329 fifty six.4-311 75-355 7765
EL94WDA 580-730 9.eight-49 263-373 64-353 seventy five-400 8130
EL95WDA 490-580 nine.8-fifty eight.eight 308-434 81.4-414 90-450 11500
EL96WDA 580 fifty eight.8 381 497 560 11500
E397WN one thousand-1650 40 5-nine      
E408WN 870-1650 forty ten-22      
E517WN 980-1580 forty 20-thirty      
E520WN 930-1550 forty 24-45      
E607WN 750-1250 40 forty five-76      
E610WN 750-1250 forty seventy five-a hundred thirty      

Spare components and construction of our roots blower:

Package deal of our Roots Blower

Pack into iron scenario, two layer,blower body and motor in reduced layer, inlet/out silencer and so on in upper layer

Roots blower pack approach identical as iron circumstance, just adjust to Fumigation Totally free Plywood Case

Our manufacturing unit is a expert maker of Roots blowers which has in excess of 20 years’ experience in equipment
manufacturing. It is found in Xihu (West Lake) Dis. CZPT CZPT Park, fifty kilometers to the east of ZheJiang provincial
money— HangZhou. Our firm also has convenient targeted traffic transportation, as it is 15 kilometers away from
Diaozhen Town station of HangZhou-HangZhou expressway, and thirty kilometers away from CZPT HangZhou station of
ZheJiang -ZheJiang expressway.The top merchandise of our company is ESR -kind Roots Blower. The roots
vacuum pump is a new variety of substantial-efficiency roots blower, which is produced independently dependent on the
domestic and overseas superior technologies. Many patented technologies have been adopted on Roots
Blower, and hence we have created important consequences in energy conservation and noise reduction, and so forth.. So considerably, our
company has invested much more than thirty,000,000 RMB to introduce this sort of sophisticated skilled equipment as
horizontal machining centre, vertical machining middle, two-way CNC area planer, CNC lathe, CNC milling
device, CNC planer, airplane grinder, cylindrical grinding equipment, and a few coordinates tests equipment.
In addition to, we have taken numerous actions to CZPTize the process stream these kinds of as functioning and cooperating
with several scientific research units, colleges and universities at home and overseas. We also continuously try to
take up and increase the domestic innovative manufacturing systems, so as to market the upgrading and
optimization of the merchandise and make the solution top quality reach the innovative level at property and overseas.
ESR -kind Roots Blower involves numerous series such as Three-leaves Variety, Two-leaves Sort and Centrifugal
Type,which can be additional divided to hundreds of types. The products are extensively used in sewage remedy,
pneumatic conveying,vacuum packaging, aquaculture, foodstuff processing, electric electricity, petrochemical, cement,
mining and other industries. Our items have this sort of advantages as lower sounds, strength saving, secure quality,
and extended service lifestyle, and so forth.. With the income outlets throughout the domestic cash metropolitan areas, our goods market properly all
in excess of the country, and have been exported to North CZPTica,Russia, Malaysia, Indonesia, Vietnam, South Africa
and some other nations. Possessing obtained the ISO9001 CZPT CZPT Method Certification, we have
recognized and enhanced the high quality assurance of the products creating, producing, and installation.
From the procedure of layout, study and development to the finished merchandise, we have received the total
approach managed independently, as a result delivering the complete basis and trustworthiness guarantee for the goods stability
and toughness. Possessing a perfect sales network and right after-sales services, we give our customers with higher-
high quality and more effective support.All workers of our firm sincerely welcome the wide masses of friends to
information, and negotiate business with us.

Our Roots Blower Workshop

         Doosn Horzitonal CZPT Centre

The Software of the Roots Blower

Servicing and inspection
(one) Verify all fasteners and finding pins conditions whether or not they are loosening.
(2) Often examine no matter whether the leakage phenomenon of the physique.
(3) Pay focus to lubrication, sum of grease and noises when operating,
determine whether or not it works underneath the required problems.
(4) CZPT & 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 (synthetic lithium grease penetration 220-250, fall stage ≥
190ºC). Change the lubricant and grease following 1st two hundred hrs operating, and substitute
yet again following a moth managing. Later on, replace the lubricant and grease according to the
atmosphere and lubricant (grease) top quality suggest a suited substitution for three
(five) Always check the inlet air filter, clear or replace the filter in time.
(6) Blower overload often not instantly exhibited, so pay out interest to
the consumption and exhaust stress, bearing temperature and the recent increase developments
of motor to decide regardless of whether the blower works typically
(7) Ahead of disassembling the blower, the assembling relation and dimensions
must be recorded or calculated, make marks on parts to guarantee the CZPT
specifications right after assembling.
(8) When freshly machine or overhaul, the oil tank should be cleaned before use
and propose exchange all grease following eight hrs working.

Widespread failure purpose and troubleshooting

No Failure Possible factors Elimination methods
1 Friction
amongst the
(one) Impurities on the impeller,
ensuing in the hole is way too modest
(two) Gear wear, ensuing in a
massive backlash
(3) The equipment is not nicely fastened,
can not sustain the impeller
(4) Bearing use resulting in
clearance escalating.
(one) Remove grime and examine
whether there is injury components
(two) Change the equipment gap, replace
the gears if the equipment backlash is
higher than the regular thirty% to
(three)Re-assemble the gears, hold
the taper speak to area is to 75%
(4)Substitute the bearing
2 Collision
impeller and
wall, the
impeller top
and casing
(one) Set up gap is not correct
(two) operating force is as well
higher, exceeding the specified
(3) Functioning temperature is way too higher
(4) Casing or foundation deformation,
positioning admirer failure
(5) Bearing axial area is not good
(1) Modify the gap
(2) Determine triggers of
overloading, diminished the stress
to the specified price
(3) Check out the set up
accuracy and minimize the pipe
(4) Check and fix bearings,
and to make certain the clearance
three Temperature
as well high
(1) Oil in tank is way too a lot, also
thick or also filthy
(2) CZPT or silencer is blocked
(3)The stress is higher than
the specified worth
(four)Extreme put on of the
impeller, large gap
(five)Very poor ventilation, indoor
temperature is substantial, resulting in
inlet air’s higher temperature
(6) The rotating velocity is also low,result in the belt slipping.
(one)Decrease the oil degree or depend on
(2)Eliminate of blocking objects
(3)Decreasing the pressure via
the blower
(four)Restore its clearance
(5)Open up vents to lessen space
(six) Enhance velocity to avoid the
belt slipping.
4 Inadequate
(one) The inlet filter is blocked
(2) Impeller dress in and the hole
raises as well significantly
(3) Belt slipping
(4) Massive imports pressure loss
(five) CZPT ventilation leakage
(one) Clear the filter dust and
(two) Repair the gap
(3)Tighten the belt and increase
the variety of belts
(4)Change the inlet stress to the
specified value
(5) Verify and mend the pipeline
5 Oil leaking or
oil leaking
into the enclosure
(one)Substantial tank situation cause
leakage from the discharge port
(two) Seal wear, resulting in shaft oil spills
(three) The pressure is higher than
the specified value

(one)Lessen the oil level
(2)Replace the seals
(3)Very clear the air vents, 2mm diameter faucet is fastened in the
middle chamber, open up the faucet
under the wall
6 Irregular
vibration and
(1)Bearing clearance exceeds the
specified price or bearing dress in
(two) The gear backlash is too
massive, not in a limited mounted
(3) The overseas objects and dust
induced by the impeller and the
impeller, the impeller and the
housing collision
(4) the impeller shaft
deformation brought on the collision
brought on by overload,
(five) Friction in between the impeller
and the inlet housing brought on by
(6) Unbalance of the impeller
brought on by fouling or foreign
entire body
(7) CZPT bolts or other
fasteners are loosened
(one)Substitute bearings or bearing
(2)Reassemble gear and make sure
(three)Cleansing blower, verify the
scenario is damaged
(four)Examine the again pressure, verify
the wheel and change gap
(5)Check out the filter and back again
force, increase the hole
among the impeller inlet and the
(6)Clear the impeller and the
casing, to make certain that the impeller
clearance operate
(7) Tighten the anchor bolts and
leveling the base.
7 Motor
(one)Compared with the essential
strain, the pressure difference
is large that the back pressure or
the inlet force is substantial
(two) When compared with the
equipment specifications, blower
movement is too large, so its stress
(3)Inlet filter is blocked, or outlet
pipe is obstructed or blocked
(four) Collusion or friction (trapped)
rotating elements
(5) The oil amount is as well higher
(6) Narrow V-belt is overheat,
vibration is too big, or pulley
is also modest
(1) Decrease the pressure to the
specified value
(2) Exhaust the extra gas into
the atmosphere or decrease the
blower speed
(three) Get rid of the obstructions
(four)Right away shut down, examine
the reason
(five) Change the oil to the appropriate
(six) Check the belt tension, and
changed it with huge diameter

Our Services

1. Pre market service                                                                              2. Right after sell service                                          
a. recommend the ideal model                                             c. on-line technical help,                                                                                   
b. manufacturing facility tour                                                                              d. whole existence spare elements and techinical help


12 months gurantee for our roots blowers

Double Oil Case Water Cooling Roots Blower for Fishery, Pheumatic