Elt-300A High Efficiency Low Engergy Roots Vacuum Pump

Elt-300A High Efficiency Low Engergy Roots Vacuum Pump

We make all kinds of roots blower, centrifugal blower, Our Primary merchandise are as underneath:

Variety Diameter Price of movement Stress
ESR-MJ(Intense Variety) Φ50~Φ300mm .five~140m³/min nine.8KPa~98.8Kpa
ESR(Common Sort) Φ50~Φ350mm .5~140m³/min nine.8KPa~78.4Kpa
ESR-H(High-pressure Type) Φ50~Φ350mm .seven~160m³/min fifty eight.8KPa~98.8Kpa
ESR-V(Vacuum Pump) Φ50~Φ350mm .five~160m³/min nine.8KPa~fifty three.3Kpa
EL Series Φ200~Φ600mm 20.3~750m³/min 9.8KPa~58.8Kpa
Multistage Centrifugal Blower
or C-Series
Φ250~Φ500mm 50~500m³/min nine.8KPa~98Kpa
ERR-ERG Variety Φ250~Φ500mm a hundred and twenty~420m³/min nine.8KPa~ninety eight.8Kpa

The operating principle of the three-blade roots blower: two a few-lobed rotors are organized in the cavity, and the
suction port and the discharge port are opened on the two sides of the cavity. By means 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 fuel in the chamber is pushed to achieve the
goal of blowing.

Function of our roots blower:
one. Big adjustment of the air volume
2. Lower Noise
three. Substantial performance
4. Lower energy cosumption
five. Long time daily life
six. Reliable operating, straightforward routine maintenance,little footprint

The parameters of our roots blower:

Sort Ratary Pace
Pressure Increase
Shaft Electrical power
Motor Unit Maximn
Excess weight(Kg)
Electrical power
ESR-50 1100-2120 9.8-58.eight .sixty five-2.fifty eight .three-3.54 .75-4 128-158
ESR-sixty five 1100-2130 nine.eight-58.8 .94-3.66 .38-4.forty six .75-5.five 155-185
ESR-eighty 1140-1900 nine.eight-58.8 2.34-5.43 one.04-seven.42 2.2-11 one hundred fifty five-277
ESR-a hundred 1060-1980 nine.8-fifty eight.eight 4.fifty seven-nine.05 1.35-12.15 three-15 309-377
ESR-one hundred twenty five 980-1850 9.8-58.8 5.35-twelve.four 1.sixty five-five.19 5.5-18.five 408-451
ESR-125C 970-1830 9.eight-fifty eight.eight seven.5-17.57 3.2-18.five 4-22 408-451
ESR-one hundred fifty 810-1730 nine.eight-58.8 10.37-27.fifteen three.84-forty.82 7.five-forty five 688-848
ESR-one hundred seventy five 970-1520 9.8-58.8 19.65-36.sixty five 7.two-forty five.ninety five eleven-fifty five 980-1080
ESR-200B 740-1450 9.8-58.8 19.65-44.eight ten.15-60.forty four 15-seventy five 1272-1546
ESR-two hundred 810-1480 9.8-58.8 27.65-fifty nine.two eight.05-eighty,12 15-90 1272-1546
ESR-250B 1100-1480 nine.8-fifty eight.eight 54.seventy seven-77.fifty five 19.97-ninety.ninety seven 30-a hundred and ten 1490-2454
ESR-250 990-1480 9.8-58.eight sixty one.four-ninety seven.fifty two twenty.1-117.3 30-132 1490-2454
ESR-300 990-1480 nine.8-fifty eight.eight 87.one-138.one 26.four-167.eight 37-185 3326-3446
ESR-350 730-1480 9.eight-fifty eight.8 78.forty one-177.31   55-250  
ESR-50H 1230-2120 63.seven-ninety eight .45-two.02 two.05-six.12 three-seven.five one hundred sixty–one hundred seventy
ESR-65H 1240-2130 63.7-ninety eight .78-2.53 two.89-7.fifty five four-11 198-230
ESR-80H 1140-1900 63.7-98 one.eighty two-four.fifty five four.09-ten.one five.5-fifteen 316-326
ESR-100H 1060-1980 sixty three.seven-98 two.sixty five-8.06 six.36-17.two 7.five-22 398-459
ESR-125H 980-1850 sixty three.7-ninety eight 4.64-eleven.23 eight.92-24.2 eleven-30 544-630
ESR-150H 810-1730 63.7-98 nine.53-twenty five.76 seventeen.sixteen-65 18.five-seventy five 752-1571
ESR-200H 810-1480 sixty three.seven-98 25.34-56.92 42.34-120 55-132 1426-1934
ESR-250H 990-1480 63.seven-98 58-93.7 eighty three.2-205 ninety-220 2980-3468
ESR300H 990-1480 sixty three.seven-98 86.nine-134.one 114.7-270 132-280 3476-3998
ERF-245 650-980 9.eight-ninety eight forty seven.5-97.4 sixteen-183 eighteen.5-two hundred 3630-3690
ERF-250 650-980 9.8-ninety eight sixty one.six-one hundred twenty.four 19-227 22-250 4450-4500
ERF-290 650-980 9.8-78.4 ninety two.three-128 22-213 thirty-250 4890-4710
ERF-295 650-980 nine.eight-seventy eight.four ninety seven.three-152.5 23-227 thirty-250 4890-4880
ERF-297 650-980 9.eight-78.four 87.five-167.6 26-249 thirty-280 5330-5520
ERF-three hundred 650-980 9.8-78.four a hundred and one.5-188.7 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 9.8-ninety eight 128.3-196 38-362 forty five-400 9440-15710
ERG-350 590-730 nine.eight-ninety eight 159.3-231.six 43-420 55-450 9700-1571
ERG-four hundred 590-730 nine.8-eighty three.three 203.1-290.nine 52-449 seventy five-500 10090-11390
ERG-445 590-730 9.8-seventy three.5 229.7-327.eight 58-477 75-560 10600-12230
ERG-450 590-730 nine.8-seventy three.5 262.4-366.two sixty four-496 seventy five-560 10600-12230
ERG-five hundred 590-730 nine.eight-63.7 327.four-452.four 78-529 90-560 12790-14620
ERF-240-V 650-980 -nine.8- -forty nine 38.one-78 thirteen-76 18.five-90 3420-3285
ERF-245-V 650-980 -nine.8- -49 47.five-ninety seven.4 16-95 22-110 3425-3360
ERF-250-V 650-980 -nine.eight- -49 63-a hundred and twenty 19-117 22-132 3910-3830
ERF-290-V 650-980 -9.eight- -49 72.six-a hundred and forty four 22-136 30-a hundred and sixty 4415-4270
ERF-295-V 650-980 -9.eight- -49 76.6-152 23-a hundred forty five 30-a hundred and sixty 4425-4485
ERF-297-V 650-980 -9.8- -forty nine eighty four.3-166.eight 26-one hundred sixty 30-a hundred and eighty 5000-4980
ERF-three hundred-V 650-980 -nine.8- -49 97-192 29-178 37-200 5000-4980
ERF-350-V 650-980 -9.8- -forty nine 116-225 34-209 45-250 5400-5700
ERG-300V 590-730 -9.eight- -49 133-193 38-184 45-220 7800-9100
ERG-350V 590-730 -nine.eight- -forty nine 163-231 43-216 55-250 9500-9470
ERG-400V 590-730 -nine.8- -forty nine 199-290 52-269 75-315 9900-10130
ERG-445V 590-730 -nine.eight- -49 224.eight-326.9 fifty eight-303 75-355 9900-10130
ERG-450V 590-730 -9.eight- -49 255-365 sixty four-335 75-400 11230-11300
ERG-500V 590-730 -9.8- -forty nine 314-452 seventy eight-412 132-450 13630-13850
ERF-245W 650-980 -13.3- -53.three 53.five-one hundred and one 21.five-102 thirty-110 3630-3360
ERF-250W 650-980 -thirteen.3- -53.three 69-127 26.5-127 30-a hundred and sixty 3985-4115
ERF-290W 650-980 -thirteen.three- -fifty three.three 82.6-a hundred and fifty thirty.5-149 37-185 4340-4580
ERF-295W 650-980 -thirteen.three- -53.three 87-158 32-158 37-185 4440-4580
ERF-297W 650-980 -thirteen.three- -53.3 ninety five-174 36-174 forty five-two hundred 5230-5130
ERF-300W 650-980 -thirteen.3- -fifty three.3 109-195 40-193 55-220 5230-5130
ERF-350W 650-980 -13.three- -53.3 129-230 50-230 75-250 5840-5670
ERG-300W 590-730 -13.three- -fifty three.three 142-197 fifty two-201 75-220 9100-9000
ERF-350W 590-730 -13.3- -fifty three.three 168-234.4 59-235.5 seventy five-280 9500-9600
ERG-400W 590-730 -thirteen.3- -fifty three.3 220-276.6 seventy one-292 90-315 9900-10130
ERG-445W 590-730 -13.3- -fifty three.three 244-294.six 82-331 90-four hundred 11230-11300
ERG450W 590-730 -thirteen.three- -fifty three.three 275-368.5 ninety one-366 one hundred ten-400 11230-11300
650-980 98-196 sixty four.8-112 135-355 160-400 8700-8600
650-980 ninety eight-196 eighty.8-139 167-439 185-five hundred 9200-9100
ETRF-three hundred
650-980 ninety eight-176.4 102-174 206-497 250-560 10320-10500
650-980 98-137.two 124-207 241-473 280-560 10700-11110
ETRG-four hundred
(three hundred,four hundred)
590-740 ninety eight-176.four 205-273 380-773 450-900 21350-24200
590-740 98-176.4 263-428 476-955 560-1000 24200-27600
650-980 -fifty three.three–eighty 72-121 75.6-121 ninety-one hundred sixty 6100-6470
650-980 -fifty three.3–80 ninety three.eight-154 99.5-186 a hundred and ten-220 7000-6400
650-980 -fifty three.3–eighty 116-189 a hundred and fifteen-220 132-250 7750-7760
EL81WD 580-980 9.8-fifty eight.eight 54.two-130 eighteen-151 forty five-185 3595
EL82WDB 580-980 9.eight-58.eight seventy two.eight-161 22-191 45-220 3860
EL83WDA 580-980 nine.eight-fifty eight.9 one hundred and one-213 28.5-202 45-220 4300
EL84WDA 580-980 9.8-58.eight 129-267 35.4-252 forty five-280 4720
EL93WDA 580-730 9.8-forty nine 230-329 fifty six.four-311 75-355 7765
EL94WDA 580-730 9.8-49 263-373 64-353 75-four hundred 8130
EL95WDA 490-580 9.8-fifty eight.8 308-434 81.four-414 ninety-450 11500
EL96WDA 580 fifty eight.8 381 497 560 11500
E397WN 1000-1650 forty 5-nine      
E408WN 870-1650 40 10-22      
E517WN 980-1580 forty twenty-thirty      
E520WN 930-1550 40 24-45      
E607WN 750-1250 forty forty five-76      
E610WN 750-1250 forty seventy five-130      

Spare areas and composition of our roots blower:

Deal 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 higher layer

Roots blower pack method very same as iron circumstance, just modify to Fumigation Totally free Plywood Scenario

Our manufacturing unit is a specialist maker of Roots blowers which has more than twenty years’ experience in machinery
manufacturing. It is located in Xihu (West Lake) Dis. East CZPT Park, 50 kilometers to the east of ZheCZPT provincial
money— HangCZPT. Our company also has hassle-free targeted traffic transportation, as it is fifteen kilometers away from
Diaozhen Town station of HangCZPT-HangCZPT expressway, and thirty kilometers away from East HangCZPT station of
ZheCZPT -ZheCZPT expressway.The top item of our firm is ESR -variety Roots Blower. The roots
vacuum pump is a new type of high-efficiency roots blower, which is created independently based mostly on the
domestic and foreign superior technologies. Numerous patented technologies have been adopted on Roots
Blower, and therefore we have produced substantial effects in vitality conservation and noise reduction, etc.. So significantly, our
firm has invested a lot more than thirty,000,000 RMB to introduce this sort of sophisticated expert gear as
horizontal machining center, vertical machining centre, two-way CNC area planer, CNC lathe, CNC milling
machine, CNC planer, airplane grinder, cylindrical grinding machine, and a few coordinates tests machine.
Apart from, we have taken a variety of steps to standardize the approach movement these kinds of as working and cooperating
with a lot of scientific research units, faculties and universities at residence and abroad. We also continuously attempt to
take in and enhance the domestic innovative creation systems, so as to market the upgrading and
optimization of the solution and make the merchandise high quality attain the innovative degree at property and overseas.
ESR -variety Roots Blower involves numerous sequence such as A few-leaves Kind, Two-leaves Kind and Centrifugal
Variety,which can be more divided to hundreds of varieties. The items are widely employed in sewage treatment,
pneumatic conveying,vacuum packaging, aquaculture, meals processing, electric powered electricity, petrochemical, cement,
mining and other industries. Our items have this kind of rewards as reduced noise, vitality saving, stable high quality,
and lengthy service life, and so on.. With the income outlets throughout the domestic money metropolitan areas, our merchandise promote well all
more than the country, and have been exported to North The united states,Russia, Malaysia, Indonesia, Vietnam, South Africa
and some other nations. Obtaining acquired the ISO9001 CZPT Quality Technique Certification, we have
established and improved the top quality assurance of the goods designing, manufacturing, and installation.
From the approach of design and style, study and development to the finished merchandise, we have obtained the total
process managed independently, thus offering the total basis and trustworthiness guarantee for the goods stability
and toughness. Possessing a perfect sales community and after-sales support, we supply our consumers with increased-
good quality and much more effective service.All employees of our business sincerely welcome the broad masses of close friends to
guidebook, and negotiate business with us.

Our Roots Blower Workshop

         Doosn Horzitonal Equipment Center

The Application of the Roots Blower

Routine maintenance and inspection
(one) Check all fasteners and finding pins situations whether they are loosening.
(two) Constantly check out whether the leakage phenomenon of the human body.
(3) Shell out consideration to lubrication, sum of grease and noises when running,
decide regardless of whether it works underneath the required problems.
(four) Lubricant & grease: The lubricant is for medium load industrial gear oil
(grade 220, kinematic viscosity of 198 ~ 242mm2 / s 40ºC, flash stage ≥ 200ºC)
The grease is butter (artificial lithium grease penetration 220-250, fall point ≥
190ºC). Substitute the lubricant and grease right after initial two hundred hrs managing, and change
once again soon after a moth working. Later on, change the lubricant and grease according to the
atmosphere and lubricant (grease) quality propose a ideal substitute for 3
(five) Always check out the inlet air filter, thoroughly clean or change the filter in time.
(6) Blower overload at times not quickly displayed, so shell out consideration to
the intake and exhaust stress, bearing temperature and the recent enhance developments
of motor to determine whether the blower functions generally
(7) Prior to disassembling the blower, the assembling relation and dimensions
need to be recorded or measured, make marks on factors to ensure the CZPT
specifications after assembling.
(eight) When freshly machine or overhaul, the oil tank must be cleaned before use
and suggest exchange all grease after eight hrs working.

Typical failure reason and troubleshooting

No Failure Feasible factors Elimination methods
1 Friction
between the
(1) Impurities on the impeller,
resulting in the hole is also modest
(two) Equipment put on, ensuing in a
large backlash
(3) The equipment is not properly fixed,
can not maintain the impeller
(4) Bearing dress in ensuing in
clearance increasing.
(1) Take away dirt and examine
no matter whether there is damage components
(2) Change the equipment hole, replace
the gears if the equipment backlash is
better than the average 30% to
(three)Re-assemble the gears, preserve
the taper contact location is to 75%
(4)Change the bearing
2 Collision
impeller and
wall, the
impeller prime
and casing
(1) Set up hole is not right
(2) working strain is too
higher, exceeding the specified
(three) Working temperature is way too large
(4) Casing or foundation deformation,
positioning enthusiast failure
(5) Bearing axial spot is not very good
(one) Change the gap
(two) Identify triggers of
overloading, lowered the force
to the specified worth
(3) Examine the set up
accuracy and minimize the pipe
(4) Check out and fix bearings,
and to guarantee the clearance
3 Temperature
also substantial
(1) Oil in tank is as well much, way too
thick or also dirty
(2) CZPT or silencer is blocked
(three)The strain is larger than
the specified price
(four)Abnormal put on of the
impeller, huge hole
(5)Bad air flow, indoor
temperature is substantial, resulting in
inlet air’s high temperature
(6) The rotating velocity is also reduced,consequence in the belt slipping.
(1)Decrease the oil degree or count on
(2)Get rid of of blocking objects
(3)Reducing the pressure by way of
the blower
(4)Fix its clearance
(five)Open up vents to lessen place
(six) Increase speed to prevent the
belt slipping.
4 Insufficient
(one) The inlet filter is blocked
(2) Impeller use and the gap
boosts too much
(3) Belt slipping
(four) Big imports strain loss
(five) Pipeline air flow leakage
(one) Clear the filter dust and
(two) Fix the gap
(3)Tighten the belt and enhance
the amount of belts
(4)Modify the inlet force to the
specified benefit
(five) Check out and mend the pipeline
five Oil leaking or
oil leaking
into the enclosure
(one)Higher tank placement result in
leakage from the discharge port
(2) Seal wear, resulting in shaft oil spills
(3) The strain is larger than
the specified price

(1)Decrease the oil degree
(two)Substitute the seals
(3)Clear the air vents, 2mm diameter faucet is set in the
middle chamber, open up the faucet
below the wall
six Irregular
vibration and
(1)Bearing clearance exceeds the
specified worth or bearing wear
(2) The equipment backlash is as well
massive, not in a tight set
(three) The international objects and dust
brought on by the impeller and the
impeller, the impeller and the
housing collision
(4) the impeller shaft
deformation induced the collision
caused by overload,
(five) Friction among the impeller
and the inlet housing caused by
(six) Unbalance of the impeller
induced by fouling or international
(seven) Anchor bolts or other
fasteners are loosened
(one)Substitute bearings or bearing
(two)Reassemble gear and make certain
(3)Cleaning blower, examine the
circumstance is damaged
(4)Check the back again stress, verify
the wheel and change hole
(5)Check out the filter and again
stress, enhance the gap
among the impeller inlet and the
(six)Clean the impeller and the
casing, to guarantee that the impeller
clearance perform
(seven) Tighten the anchor bolts and
leveling the foundation.
seven Motor
(one)In comparison with the needed
pressure, the strain big difference
is massive that the again force or
the inlet strain is higher
(2) In comparison with the
tools requirements, blower
circulation is way too big, so its stress
(3)Inlet filter is blocked, or outlet
pipe is obstructed or blocked
(4) Collusion or friction (stuck)
rotating components
(5) The oil stage is too large
(six) Slender V-belt is overheat,
vibration is also huge, or pulley
is too little
(1) Minimize the strain to the
specified worth
(two) Exhaust the excessive fuel into
the atmosphere or lessen the
blower speed
(3) Get rid of the obstructions
(four)Quickly shut down, check
the explanation
(5) Change the oil to the proper
(6) Check out the belt stress, and
changed it with huge diameter

Our Services

one. Pre promote service                                                                              2. Soon after offer service                                          
a. recommend the suited model                                             c. online specialized assist,                                                                                   
b. factory tour                                                                              d. complete lifestyle CZPT and techinical support


twelve months gurantee for our roots blowers

Elt-300A High Efficiency Low Engergy Roots Vacuum Pump