We make all types of roots blower, centrifugal blower, Our Principal products are as underneath:

Variety	Diameter	Fee of movement	Stress
ESR-MJ(Intensive Type)	Φ50~Φ300mm	.five~140m³/min	9.8KPa~ninety eight.8Kpa
ESR(Ordinary Type)	Φ50~Φ350mm	.5~140m³/min	nine.8KPa~seventy eight.4Kpa
ESR-H(Substantial-force Type)	Φ50~Φ350mm	.seven~160m³/min	58.8KPa~98.8Kpa
ESR-V(Vacuum Pump)	Φ50~Φ350mm	.5~160m³/min	nine.8KPa~53.3Kpa
EL Sequence	Φ200~Φ600mm	20.three~750m³/min	9.8KPa~58.8Kpa
Multistage Centrifugal Blower or C-Collection	Φ250~Φ500mm	50~500m³/min	9.8KPa~98Kpa
ERR-ERG Kind	Φ250~Φ500mm	one hundred twenty~420m³/min	nine.8KPa~ninety eight.8Kpa

The doing work 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 equally sides of the cavity. By way 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 gas in the chamber is pushed to attain the
objective of blowing.

Attribute of our roots blower:
1. Large adjustment of the air volume
two. Lower Sound
three. Substantial effectiveness
four. Lower strength cosumption
5. Lengthy time lifestyle
6. Reputable managing, effortless servicing,little footprint

The parameters of our roots blower:

Kind	Ratary Speed (r/min)	Pressure Rise (Kpa)	Ability (m/min)	Shaft Electricity (Kw)	Motor	Unit Maximn Weight(Kg)
					Electricity (Kw)
ESR-fifty	1100-2120	9.eight-fifty eight.eight	.65-two.fifty eight	.three-three.54	.seventy five-4	128-158
ESR-65	1100-2130	nine.8-fifty eight.8	.ninety four-three.66	.38-four.46	.75-5.5	one hundred fifty five-185
ESR-eighty	1140-1900	9.8-58.eight	two.34-five.forty three	1.04-7.forty two	two.two-11	a hundred and fifty five-277
ESR-a hundred	1060-1980	9.8-58.8	four.57-nine.05	1.35-12.15	3-fifteen	309-377
ESR-a hundred twenty five	980-1850	9.8-fifty eight.eight	five.35-twelve.4	one.sixty five-five.19	5.five-18.5	408-451
ESR-125C	970-1830	9.8-58.8	7.5-17.57	three.2-18.five	four-22	408-451
ESR-150	810-1730	nine.8-58.8	10.37-27.15	3.eighty four-forty.82	7.five-45	688-848
ESR-a hundred seventy five	970-1520	nine.8-fifty eight.8	19.sixty five-36.sixty five	seven.two-45.95	eleven-55	980-1080
ESR-200B	740-1450	9.eight-fifty eight.8	19.sixty five-forty four.8	10.15-sixty.forty four	15-seventy five	1272-1546
ESR-200	810-1480	nine.8-58.eight	27.sixty five-fifty nine.2	eight.05-80,12	fifteen-90	1272-1546
ESR-250B	1100-1480	nine.8-fifty eight.8	fifty four.77-seventy seven.55	19.ninety seven-90.97	thirty-one hundred ten	1490-2454
ESR-250	990-1480	9.eight-58.eight	sixty one.4-97.fifty two	twenty.1-117.3	30-132	1490-2454
ESR-300	990-1480	9.8-58.8	87.one-138.1	26.4-167.8	37-185	3326-3446
ESR-350	730-1480	9.8-fifty eight.eight	seventy eight.41-177.31		55-250
ESR-50H	1230-2120	sixty three.seven-ninety eight	.45-2.02	2.05-six.12	3-seven.five	one hundred sixty--one hundred seventy
ESR-65H	1240-2130	sixty three.seven-98	.78-2.fifty three	two.89-seven.55	four-11	198-230
ESR-80H	1140-1900	sixty three.7-ninety eight	1.82-four.55	four.09-ten.one	5.five-fifteen	316-326
ESR-100H	1060-1980	63.seven-ninety eight	two.65-8.06	6.36-17.two	7.five-22	398-459
ESR-125H	980-1850	sixty three.seven-98	4.64-eleven.23	8.92-24.2	11-30	544-630
ESR-150H	810-1730	63.7-ninety eight	9.fifty three-twenty five.76	seventeen.sixteen-65	eighteen.five-seventy five	752-1571
ESR-200H	810-1480	sixty three.7-98	twenty five.34-fifty six.ninety two	42.34-one hundred twenty	55-132	1426-1934
ESR-250H	990-1480	63.7-ninety eight	58-93.7	eighty three.2-205	90-220	2980-3468
ESR300H	990-1480	63.7-98	86.9-134.1	114.7-270	132-280	3476-3998
ERF-245	650-980	9.8-ninety eight	forty seven.five-ninety seven.four	16-183	18.5-200	3630-3690
ERF-250	650-980	9.8-ninety eight	61.6-120.4	19-227	22-250	4450-4500
ERF-290	650-980	nine.8-78.four	ninety two.three-128	22-213	30-250	4890-4710
ERF-295	650-980	nine.eight-78.4	ninety seven.3-152.five	23-227	thirty-250	4890-4880
ERF-297	650-980	9.eight-seventy eight.4	87.5-167.6	26-249	30-280	5330-5520
ERF-300	650-980	9.eight-78.4	101.5-188.seven	29-278	37-315	5330-5520
ERF-350	650-980	9.8-seventy eight.4	126-224.nine	34-249	forty five-280	5210-6470
ERG-three hundred	590-730	nine.8-ninety eight	128.three-196	38-362	forty five-four hundred	9440-15710
ERG-350	590-730	nine.8-98	159.3-231.6	43-420	55-450	9700-1571
ERG-four hundred	590-730	nine.8-83.three	203.1-290.9	52-449	seventy five-500	10090-11390
ERG-445	590-730	9.8-seventy three.5	229.7-327.eight	58-477	seventy five-560	10600-12230
ERG-450	590-730	nine.eight-73.5	262.four-366.2	sixty four-496	seventy five-560	10600-12230
ERG-five hundred	590-730	nine.eight-sixty three.7	327.four-452.4	78-529	ninety-560	12790-14620
ERF-240-V	650-980	-nine.8- -forty nine	38.1-78	13-76	18.five-ninety	3420-3285
ERF-245-V	650-980	-nine.8- -49	47.5-ninety seven.four	sixteen-95	22-a hundred and ten	3425-3360
ERF-250-V	650-980	-9.8- -49	63-a hundred and twenty	19-117	22-132	3910-3830
ERF-290-V	650-980	-9.eight- -49	72.6-one hundred forty four	22-136	30-a hundred and sixty	4415-4270
ERF-295-V	650-980	-9.8- -forty nine	seventy six.6-152	23-one hundred forty five	thirty-a hundred and sixty	4425-4485
ERF-297-V	650-980	-nine.8- -49	84.3-166.8	26-a hundred and sixty	thirty-a hundred and eighty	5000-4980
ERF-300-V	650-980	-nine.8- -forty nine	ninety seven-192	29-178	37-200	5000-4980
ERF-350-V	650-980	-9.eight- -forty nine	116-225	34-209	forty five-250	5400-5700
ERG-300V	590-730	-9.eight- -forty nine	133-193	38-184	forty five-220	7800-9100
ERG-350V	590-730	-9.eight- -49	163-231	forty three-216	55-250	9500-9470
ERG-400V	590-730	-nine.8- -49	199-290	52-269	75-315	9900-10130
ERG-445V	590-730	-nine.eight- -forty nine	224.8-326.9	58-303	seventy five-355	9900-10130
ERG-450V	590-730	-nine.8- -49	255-365	64-335	75-400	11230-11300
ERG-500V	590-730	-nine.8- -forty nine	314-452	seventy eight-412	132-450	13630-13850
ERF-245W	650-980	-thirteen.three- -53.three	53.5-101	21.five-102	thirty-one hundred ten	3630-3360
ERF-250W	650-980	-13.3- -53.3	sixty nine-127	26.five-127	30-one hundred sixty	3985-4115
ERF-290W	650-980	-13.3- -53.3	eighty two.six-one hundred fifty	thirty.five-149	37-185	4340-4580
ERF-295W	650-980	-thirteen.three- -fifty three.3	87-158	32-158	37-185	4440-4580
ERF-297W	650-980	-13.three- -53.three	ninety five-174	36-174	45-two hundred	5230-5130
ERF-300W	650-980	-13.3- -53.three	109-195	40-193	55-220	5230-5130
ERF-350W	650-980	-thirteen.3- -53.3	129-230	50-230	seventy five-250	5840-5670
ERG-300W	590-730	-13.3- -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.five	75-280	9500-9600
ERG-400W	590-730	-thirteen.three- -53.3	220-276.six	seventy one-292	90-315	9900-10130
ERG-445W	590-730	-thirteen.three- -53.three	244-294.6	82-331	90-400	11230-11300
ERG450W	590-730	-thirteen.3- -53.three	275-368.5	ninety one-366	110-400	11230-11300
ETRF-250 (240,250)	650-980	ninety eight-196	sixty four.eight-112	135-355	one hundred 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-176.4	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-four hundred (300,400)	590-740	ninety eight-176.four	205-273	380-773	450-900	21350-24200
ETRG-450 (350,450)	590-740	ninety eight-176.four	263-428	476-955	560-1000	24200-27600
ETRF-250W (240,250)	650-980	-53.3--80	72-121	seventy five.six-121	90-a hundred and sixty	6100-6470
ETRF-295W (245/295)	650-980	-53.3--eighty	ninety three.eight-154	99.five-186	110-220	7000-6400
ETRF-300W (2505/300)	650-980	-53.3--eighty	116-189	115-220	132-250	7750-7760
EL81WD	580-980	nine.eight-fifty eight.8	fifty four.2-one hundred thirty	eighteen-151	45-185	3595
EL82WDB	580-980	nine.eight-fifty eight.8	72.8-161	22-191	forty five-220	3860
EL83WDA	580-980	nine.8-58.nine	one hundred and one-213	28.5-202	forty five-220	4300
EL84WDA	580-980	nine.8-58.8	129-267	35.four-252	45-280	4720
EL93WDA	580-730	9.eight-forty nine	230-329	56.four-311	75-355	7765
EL94WDA	580-730	9.eight-forty nine	263-373	sixty four-353	75-400	8130
EL95WDA	490-580	9.eight-58.eight	308-434	eighty one.four-414	ninety-450	11500
EL96WDA	580	fifty eight.8	381	497	560	11500
E397WN	1000-1650	40	5-9
E408WN	870-1650	40	10-22
E517WN	980-1580	forty	twenty-30
E520WN	930-1550	40	24-45
E607WN	750-1250	40	forty five-76
E610WN	750-1250	forty	75-one hundred thirty

Spare areas and structure of our roots blower:

Package of our Roots Blower

Pack into iron case, two layer,blower physique and motor in reduce layer, inlet/out silencer and many others in upper layer

Roots blower pack approach same as iron case, just change to Fumigation Free Plywood Situation

Our factory is a skilled maker of Roots blowers which has above twenty years' experience in equipment
production. It is situated in Xihu (West Lake) Dis. East CZPT Park, 50 kilometers to the east of ZheJiang provincial
cash--- HangZhou. Our organization also has handy targeted traffic transportation, as it is fifteen kilometers absent from
Diaozhen City station of HangZhou-HangZhou expressway, and thirty kilometers away from East HangZhou station of
ZheJiang -ZheJiang expressway.The leading solution of our organization is ESR -variety Roots Blower. The roots
vacuum pump is a new sort of large-efficiency roots blower, which is designed independently based on the
domestic and overseas advanced systems. A number of patented technologies have been adopted on Roots
Blower, and therefore we have manufactured important results in vitality conservation and noise reduction, and many others.. So much, our
company has invested a lot more than thirty,000,000 RMB to introduce such superior specialist equipment as
horizontal machining center, vertical machining center, two-way CNC surface planer, CNC lathe, CNC milling
device, CNC planer, aircraft grinder, cylindrical grinding device, and 3 coordinates screening device.
Apart from, we have taken various steps to CZPTize the procedure stream these kinds of as doing work and cooperating
with several scientific research units, colleges and universities at property and abroad. We also continually try to
take in and improve the domestic superior creation systems, so as to advertise the upgrading and
optimization of the item and make the item quality reach the innovative stage at residence and overseas.
ESR -type Roots Blower involves a number of series such as Three-leaves Kind, Two-leaves Variety and Centrifugal
Kind,which can be even more divided to hundreds of kinds. The merchandise are commonly utilized in sewage treatment,
pneumatic conveying,vacuum packaging, aquaculture, food processing, electrical power, petrochemical, cement,
mining and other industries. Our items have this sort of advantages as reduced noise, power conserving, steady top quality,
and long provider lifestyle, and so on.. With the sales outlets throughout the domestic capital towns, our goods promote properly all
above the place, and have been exported to North The united states,Russia, Malaysia, Indonesia, Vietnam, South Africa
and some other nations. Getting obtained the ISO9001 CZPT CZPT Program Certification, we have
set up and enhanced the good quality assurance of the merchandise creating, producing, and installation.
From the procedure of design, study and development to the concluded items, we have got the total
method controlled independently, as a result offering the full foundation and dependability ensure for the merchandise security
and longevity. Obtaining a perfect income community and after-income provider, we provide our clients with increased-
quality and more effective support.All staff of our firm sincerely welcome the wide masses of pals to
guidebook, and negotiate enterprise with us.

Our Roots Blower Workshop

         Doosn Horzitonal CZPT Center

The Application of the Roots Blower

Servicing and inspection
(one) Check all fasteners and finding pins problems whether they are loosening.
(two) Always examine no matter whether the leakage phenomenon of the human body.
(3) Spend focus to lubrication, quantity of grease and noises when operating,
determine whether it operates beneath the required situations.
(4) CZPT & 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 (artificial lithium grease penetration 220-250, drop level ≥
190ºC). Replace the lubricant and grease soon after first 200 several hours managing, and replace
once more following a moth operating. Afterwards, change the lubricant and grease in accordance to the
atmosphere and lubricant (grease) quality propose a appropriate substitute for a few
months.
(5) Often check the inlet air filter, clean or exchange the filter in time.
(six) Blower overload often not right away shown, so pay out consideration to
the consumption and exhaust pressure, bearing temperature and the existing increase trends
of motor to decide regardless of whether the blower performs typically
(7) Just before disassembling the blower, the assembling relation and dimensions
have to be recorded or measured, make marks on components to make sure the CZPT
needs soon after assembling.
(8) When newly device or overhaul, the oil tank should be cleaned just before use
and propose replace all grease after eight hrs operating.

Typical failure reason and troubleshooting

No	Failure	Possible reasons	Elimination methods
1	Friction amongst the impeller	(one) Impurities on the impeller, ensuing in the gap is too small (2) Gear wear, ensuing in a large backlash (three) The gear is not well fastened, can not preserve the impeller synchronization (4) Bearing dress in resulting in clearance increasing.	(one) Remove grime and check out no matter whether there is damage areas (2) Alter the equipment gap, substitute the gears if the gear backlash is better than the regular 30% to fifty% (3)Re-assemble the gears, keep the taper get in touch with location is to 75% (4)Substitute the bearing
2	Collision amongst impeller and wall, the impeller leading and casing	(one) Set up gap is not correct (two) running force is too substantial, exceeding the specified value (three) Operating temperature is also higher (four) Casing or foundation deformation, positioning enthusiast failure (five) Bearing axial area is not excellent	(1) Alter the hole (2) Discover leads to of overloading, decreased the strain to the specified value (3) Check out the set up precision and decrease the pipe stress (four) Examine and fix bearings, and to make certain the clearance (five)Relocation
3	Temperature also higher	(1) Oil in tank is too much, way too thick or too dirty (2) CZPT or silencer is blocked (3)The stress is larger than the specified worth (4)Excessive put on of the impeller, huge gap (five)Bad ventilation, indoor temperature is high, resulting in inlet air's high temperature (six) The rotating pace is too lower,end result in the belt slipping.	(one)Reduce the oil degree or count on oil (2)Remove of blocking objects (three)Lowering the pressure via the blower (4)Mend its clearance (five)Open up vents to reduce place temperature (6) Improve speed to avert the belt slipping.
4	Inadequate circulation	(1) The inlet filter is blocked (two) Impeller use and the gap raises way too significantly (three) Belt slipping (four) Massive imports force decline (five) CZPT air flow leakage	(one) Cleanse the filter dust and obstruction (two) Restore the gap (3)Tighten the belt and increase the variety of belts (four)Alter the inlet pressure to the specified price (5) Examine and mend the pipeline
five	Oil leaking or oil leaking into the enclosure	(one)Higher tank position result in leakage from the discharge port (2) Seal dress in, resulting in shaft oil spills (three) The stress is larger than the specified price	(one)Lessen the oil degree (2)Replace the seals (3)Distinct the air vents, 2mm diameter faucet is mounted in the center chamber, open up the faucet underneath the wall
6	Irregular vibration and sound	(1)Bearing clearance exceeds the specified worth or bearing put on (2) The gear backlash is too massive, not in a restricted fixed (three) The overseas objects and dust induced by the impeller and the impeller, the impeller and the housing collision (four) the impeller shaft deformation caused the collision brought on by overload, (5) Friction in between the impeller and the inlet housing induced by overheating (6) Unbalance of the impeller caused by fouling or overseas human body (7) CZPT bolts or other fasteners are loosened	(1)Change bearings or bearing seat (2)Reassemble gear and make sure backlash (three)Cleaning blower, verify the case is ruined (four)Check out the back strain, check out the wheel and change gap (five)Check out the filter and again force, boost the gap 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.
seven	Motor overload	(one)In comparison with the needed stress, the strain distinction is massive that the back stress or the inlet force is large (two) In contrast with the tools requirements, blower circulation is as well huge, so its strain increases (three)Inlet filter is blocked, or outlet pipe is obstructed or blocked (4) Collusion or friction (stuck) rotating elements (5) The oil stage is too large (6) Narrow V-belt is overheat, vibration is as well massive, or pulley is too little	(one) Lessen the stress to the specified price (2) Exhaust the excess fuel into the atmosphere or reduce the blower speed (3) Eliminate the obstructions (four)Right away shut down, verify the explanation (5) Alter the oil to the right degree (six) Check out the belt pressure, and changed it with large diameter pulley.

Our Provider

1. Pre market service                                                                              2. Following promote service                                          
a. recommend the suited model                                             c. on the internet specialized assistance,                                                                                   
b. factory tour                                                                              d. whole life spare components and techinical assist

Gurantee

12 months gurantee for our roots blowers