We make all varieties of roots blower, centrifugal blower, Our Primary goods are as below:

Kind	Diameter	Rate of flow	Pressure
ESR-MJ(Intense Sort)	Φ50~Φ300mm	.5~140m³/min	9.8KPa~ninety eight.8Kpa
ESR(Ordinary Kind)	Φ50~Φ350mm	.five~140m³/min	nine.8KPa~78.4Kpa
ESR-H(Substantial-force Variety)	Φ50~Φ350mm	.7~160m³/min	58.8KPa~98.8Kpa
ESR-V(Vacuum Pump)	Φ50~Φ350mm	.five~160m³/min	nine.8KPa~fifty three.3Kpa
EL Series	Φ200~Φ600mm	twenty.three~750m³/min	9.8KPa~fifty eight.8Kpa
Multistage Centrifugal Blower or C-Series	Φ250~Φ500mm	fifty~500m³/min	nine.8KPa~98Kpa
ERR-ERG Kind	Φ250~Φ500mm	120~420m³/min	nine.8KPa~98.8Kpa

The doing work theory of the 3-blade roots blower: two three-lobed rotors are organized in the cavity, and the
suction port and the discharge port are opened on both 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 fuel in the chamber is pushed to accomplish the
purpose of blowing.

Feature of our roots blower:
1. Big adjustment of the air quantity
2. Lower Noise
three. Large performance
4. Lower power cosumption
five. Prolonged time existence
6. Reliable working, simple routine maintenance,modest footprint

The parameters of our roots blower:

Variety	Ratary Pace (r/min)	Stress Increase (Kpa)	Ability (m/min)	Shaft Electricity (Kw)	Motor	Device Maximn Fat(Kg)
					Power (Kw)
ESR-50	1100-2120	9.eight-58.eight	.sixty five-2.58	.3-three.fifty four	.75-four	128-158
ESR-65	1100-2130	nine.8-58.eight	.94-3.66	.38-4.forty six	.75-five.five	one hundred fifty five-185
ESR-80	1140-1900	9.eight-58.eight	two.34-5.forty three	one.04-7.forty two	two.two-11	a hundred and fifty five-277
ESR-one hundred	1060-1980	nine.8-58.8	4.fifty seven-9.05	one.35-twelve.fifteen	3-15	309-377
ESR-125	980-1850	nine.8-fifty eight.eight	5.35-12.4	one.sixty five-5.19	5.5-eighteen.5	408-451
ESR-125C	970-1830	nine.8-58.8	seven.five-17.57	3.two-eighteen.5	4-22	408-451
ESR-150	810-1730	9.eight-fifty eight.8	10.37-27.fifteen	3.eighty four-forty.eighty two	seven.five-45	688-848
ESR-a hundred seventy five	970-1520	9.8-58.eight	19.sixty five-36.65	seven.two-45.95	eleven-fifty five	980-1080
ESR-200B	740-1450	nine.8-fifty eight.eight	19.sixty five-forty four.8	10.fifteen-sixty.44	15-75	1272-1546
ESR-200	810-1480	9.8-fifty eight.8	27.65-59.two	eight.05-80,twelve	15-ninety	1272-1546
ESR-250B	1100-1480	9.eight-58.eight	54.77-77.fifty five	19.97-ninety.ninety seven	30-one hundred ten	1490-2454
ESR-250	990-1480	9.eight-fifty eight.8	sixty one.four-97.fifty two	twenty.one-117.three	30-132	1490-2454
ESR-300	990-1480	nine.eight-58.8	87.one-138.one	26.4-167.8	37-185	3326-3446
ESR-350	730-1480	nine.8-fifty eight.8	seventy eight.forty one-177.31		55-250
ESR-50H	1230-2120	sixty three.seven-ninety eight	.forty five-2.02	2.05-six.twelve	3-7.5	one hundred sixty–a hundred and seventy
ESR-65H	1240-2130	sixty three.seven-ninety eight	.seventy eight-two.fifty three	2.89-7.fifty five	4-11	198-230
ESR-80H	1140-1900	63.seven-ninety eight	one.82-four.55	four.09-10.one	5.five-15	316-326
ESR-100H	1060-1980	sixty three.7-ninety eight	two.65-8.06	6.36-17.two	seven.5-22	398-459
ESR-125H	980-1850	63.seven-ninety eight	4.64-11.23	8.ninety two-24.2	11-thirty	544-630
ESR-150H	810-1730	63.seven-98	nine.53-twenty five.76	17.sixteen-sixty five	18.five-75	752-1571
ESR-200H	810-1480	63.seven-ninety eight	twenty five.34-fifty six.92	forty two.34-a hundred and twenty	55-132	1426-1934
ESR-250H	990-1480	sixty three.7-98	fifty eight-93.7	eighty three.2-205	90-220	2980-3468
ESR300H	990-1480	sixty three.7-ninety eight	86.nine-134.1	114.seven-270	132-280	3476-3998
ERF-245	650-980	9.eight-ninety eight	47.five-97.four	16-183	18.five-two hundred	3630-3690
ERF-250	650-980	9.8-ninety eight	61.6-120.4	19-227	22-250	4450-4500
ERF-290	650-980	9.eight-seventy eight.four	ninety two.3-128	22-213	thirty-250	4890-4710
ERF-295	650-980	9.eight-78.four	97.3-152.5	23-227	30-250	4890-4880
ERF-297	650-980	nine.8-seventy eight.four	87.5-167.6	26-249	30-280	5330-5520
ERF-300	650-980	nine.8-78.four	101.5-188.7	29-278	37-315	5330-5520
ERF-350	650-980	9.eight-seventy eight.4	126-224.9	34-249	forty five-280	5210-6470
ERG-three hundred	590-730	nine.eight-98	128.3-196	38-362	45-400	9440-15710
ERG-350	590-730	9.eight-ninety eight	159.3-231.six	forty three-420	fifty five-450	9700-1571
ERG-four hundred	590-730	9.eight-eighty three.three	203.one-290.nine	52-449	75-five hundred	10090-11390
ERG-445	590-730	9.8-73.five	229.7-327.eight	fifty eight-477	75-560	10600-12230
ERG-450	590-730	9.eight-73.5	262.4-366.two	64-496	75-560	10600-12230
ERG-500	590-730	9.8-63.7	327.four-452.4	78-529	90-560	12790-14620
ERF-240-V	650-980	-9.eight- -forty nine	38.1-78	13-seventy six	eighteen.five-ninety	3420-3285
ERF-245-V	650-980	-nine.8- -49	forty seven.5-97.four	sixteen-95	22-a hundred and ten	3425-3360
ERF-250-V	650-980	-9.8- -49	63-120	19-117	22-132	3910-3830
ERF-290-V	650-980	-9.eight- -49	seventy two.six-144	22-136	thirty-a hundred and sixty	4415-4270
ERF-295-V	650-980	-nine.8- -forty nine	76.six-152	23-145	30-160	4425-4485
ERF-297-V	650-980	-nine.eight- -forty nine	84.3-166.eight	26-a hundred and sixty	thirty-180	5000-4980
ERF-three hundred-V	650-980	-nine.8- -49	97-192	29-178	37-two hundred	5000-4980
ERF-350-V	650-980	-9.8- -49	116-225	34-209	forty five-250	5400-5700
ERG-300V	590-730	-9.8- -forty nine	133-193	38-184	forty five-220	7800-9100
ERG-350V	590-730	-nine.eight- -forty nine	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.eight- -49	224.eight-326.nine	fifty eight-303	75-355	9900-10130
ERG-450V	590-730	-nine.eight- -49	255-365	sixty four-335	seventy five-400	11230-11300
ERG-500V	590-730	-9.eight- -49	314-452	seventy eight-412	132-450	13630-13850
ERF-245W	650-980	-13.3- -53.3	fifty three.five-one hundred and one	21.5-102	30-a hundred and ten	3630-3360
ERF-250W	650-980	-thirteen.three- -fifty three.three	sixty nine-127	26.5-127	30-160	3985-4115
ERF-290W	650-980	-13.three- -53.three	82.6-a hundred and fifty	30.5-149	37-185	4340-4580
ERF-295W	650-980	-thirteen.3- -53.three	87-158	32-158	37-185	4440-4580
ERF-297W	650-980	-13.3- -53.three	95-174	36-174	45-two hundred	5230-5130
ERF-300W	650-980	-13.three- -53.3	109-195	40-193	55-220	5230-5130
ERF-350W	650-980	-13.3- -53.three	129-230	fifty-230	seventy five-250	5840-5670
ERG-300W	590-730	-13.three- -53.3	142-197	52-201	75-220	9100-9000
ERF-350W	590-730	-13.3- -53.3	168-234.four	fifty nine-235.five	75-280	9500-9600
ERG-400W	590-730	-13.3- -53.3	220-276.6	seventy one-292	90-315	9900-10130
ERG-445W	590-730	-13.3- -fifty three.three	244-294.6	eighty two-331	90-four hundred	11230-11300
ERG450W	590-730	-13.three- -53.3	275-368.5	ninety one-366	a hundred and ten-four hundred	11230-11300
ETRF-250 (240,250)	650-980	98-196	sixty four.8-112	a hundred thirty five-355	a hundred and sixty-400	8700-8600
ETRF-295 (245,295)	650-980	ninety eight-196	eighty.8-139	167-439	185-five hundred	9200-9100
ETRF-300 (245,295)	650-980	98-176.four	102-174	206-497	250-560	10320-10500
ETRF-350 (245,295)	650-980	98-137.two	124-207	241-473	280-560	10700-11110
ETRG-four hundred (300,400)	590-740	ninety eight-176.4	205-273	380-773	450-900	21350-24200
ETRG-450 (350,450)	590-740	98-176.4	263-428	476-955	560-1000	24200-27600
ETRF-250W (240,250)	650-980	-53.three–80	72-121	75.six-121	90-one hundred sixty	6100-6470
ETRF-295W (245/295)	650-980	-fifty three.three–eighty	ninety three.eight-154	99.5-186	one hundred ten-220	7000-6400
ETRF-300W (2505/three hundred)	650-980	-53.three–80	116-189	a hundred and fifteen-220	132-250	7750-7760
EL81WD	580-980	9.eight-fifty eight.8	fifty four.two-130	eighteen-151	45-185	3595
EL82WDB	580-980	nine.eight-fifty eight.eight	seventy two.eight-161	22-191	45-220	3860
EL83WDA	580-980	9.eight-58.9	101-213	28.five-202	45-220	4300
EL84WDA	580-980	nine.eight-fifty eight.8	129-267	35.4-252	45-280	4720
EL93WDA	580-730	9.eight-forty nine	230-329	56.4-311	seventy five-355	7765
EL94WDA	580-730	9.8-49	263-373	sixty four-353	seventy five-four hundred	8130
EL95WDA	490-580	9.eight-fifty eight.eight	308-434	eighty one.4-414	90-450	11500
EL96WDA	580	58.eight	381	497	560	11500
E397WN	one thousand-1650	40	five-9
E408WN	870-1650	forty	ten-22
E517WN	980-1580	40	20-30
E520WN	930-1550	40	24-forty five
E607WN	750-1250	forty	45-seventy six
E610WN	750-1250	40	seventy five-130

Spare elements and framework of our roots blower:

Package of our Roots Blower

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

Roots blower pack approach very same as iron scenario, just adjust to Fumigation Totally free Plywood Case

Our manufacturing facility is a professional maker of Roots blowers which has in excess of 20 years’ experience in equipment
producing. It is positioned in Xihu (West Lake) Dis. CZPT CZPT Park, 50 kilometers to the east of ZheJiang provincial
capital— HangZhou. Our company also has handy traffic transportation, as it is 15 kilometers absent from
Diaozhen City station of HangZhou-HangZhou expressway, and thirty kilometers away from CZPT HangZhou station of
ZheJiang -ZheJiang expressway.The foremost item of our company is ESR -sort Roots Blower. The roots
vacuum pump is a new kind of substantial-performance roots blower, which is produced independently primarily based on the
domestic and foreign advanced systems. Many patented technologies have been adopted on Roots
Blower, and hence we have made significant results in vitality conservation and noise reduction, etc.. So much, our
organization has invested much more than 30,000,000 RMB to introduce such superior skilled gear as
horizontal machining centre, vertical machining heart, two-way CNC floor planer, CNC lathe, CNC milling
equipment, CNC planer, aircraft grinder, cylindrical grinding device, and a few coordinates tests machine.
Aside from, we have taken numerous steps to CZPTize the method movement these kinds of as functioning and cooperating
with a lot of scientific research units, schools and universities at property and abroad. We also repeatedly try to
soak up and enhance the domestic innovative manufacturing technologies, so as to encourage the upgrading and
optimization of the merchandise and make the merchandise quality reach the sophisticated stage at house and overseas.
ESR -type Roots Blower includes many sequence this kind of as Three-leaves Variety, Two-leaves Variety and Centrifugal
Variety,which can be even more divided to hundreds of versions. The items are extensively used in sewage remedy,
pneumatic conveying,vacuum packaging, aquaculture, food processing, electric power, petrochemical, cement,
mining and other industries. Our products have such positive aspects as reduced sound, energy preserving, steady quality,
and lengthy provider existence, etc.. With the income outlets throughout the domestic cash towns, our goods promote well all
more than the region, and have been exported to North CZPTica,Russia, Malaysia, Indonesia, Vietnam, South Africa
and some other nations around the world. Obtaining acquired the ISO9001 CZPT CZPT Method Certification, we have
recognized and improved the top quality assurance of the products planning, production, and set up.
From the procedure of design and style, study and development to the concluded goods, we have received the whole
method controlled independently, hence providing the total foundation and dependability promise for the products stability
and longevity. Obtaining a perfect revenue network and right after-product sales service, we give our consumers with larger-
good quality and far more effective provider.All employees of our organization sincerely welcome the wide masses of close friends to
guide, and negotiate company with us.

Our Roots Blower Workshop

         Doosn Horzitonal CZPT Centre

The Application of the Roots Blower

Routine maintenance and inspection
(one) Check all fasteners and finding pins circumstances regardless of whether they are loosening.
(two) Always examine whether or not the leakage phenomenon of the physique.
(three) Pay consideration to lubrication, amount of grease and noises when working,
figure out whether or not it performs underneath the necessary problems.
(4) CZPT & grease: The lubricant is for medium load industrial gear oil
(grade 220, kinematic viscosity of 198 ~ 242mm2 / s 40ºC, flash level ≥ 200ºC)
The grease is butter (synthetic lithium grease penetration 220-250, fall point ≥
190ºC). Exchange the lubricant and grease soon after very first 200 several hours working, and change
once again soon after a moth managing. Afterwards, change the lubricant and grease in accordance to the
environment and lubricant (grease) top quality propose a suitable replacement for 3
months.
(5) Constantly verify the inlet air filter, clean or change the filter in time.
(six) Blower overload often not immediately exhibited, so shell out interest to
the ingestion and exhaust strain, bearing temperature and the current improve developments
of motor to decide regardless of whether the blower operates generally
(7) Prior to disassembling the blower, the assembling relation and dimensions
should be recorded or calculated, make marks on parts to guarantee the CZPT
needs following assembling.
(eight) When freshly machine or overhaul, the oil tank should be cleaned just before use
and propose substitute all grease soon after eight hours managing.

Common failure reason and troubleshooting

No	Failure	Possible causes	Elimination techniques
1	Friction among the impeller	(1) Impurities on the impeller, resulting in the hole is also little (two) Gear dress in, ensuing in a large backlash (3) The gear is not effectively fixed, can not keep the impeller synchronization (4) Bearing put on resulting in clearance rising.	(1) Remove filth and check out regardless of whether there is harm components (two) Change the gear hole, substitute the gears if the gear backlash is increased than the typical thirty% to 50% (three)Re-assemble the gears, maintain the taper get in touch with area is to 75% (4)Exchange the bearing
2	Collision in between impeller and wall, the impeller best and casing	(one) Set up hole is not proper (2) functioning force is too higher, exceeding the specified benefit (3) Running temperature is way too high (four) Casing or foundation deformation, positioning supporter failure (5) Bearing axial spot is not excellent	(1) Modify the gap (2) Discover brings about of overloading, diminished the force to the specified benefit (3) Check the set up precision and lessen the pipe tension (four) Examine and mend bearings, and to make certain the clearance (five)Relocation
three	Temperature way too high	(one) Oil in tank is as well a lot, as well thick or also filthy (2) CZPT or silencer is blocked (3)The force is increased than the specified benefit (4)Excessive use of the impeller, massive hole (five)Bad ventilation, indoor temperature is high, ensuing in inlet air’s substantial temperature (6) The rotating speed is as well low,consequence in the belt slipping.	(1)Lessen the oil stage or depend on oil (2)Remove of blocking objects (3)Minimizing the stress through the blower (four)Restore its clearance (five)Open vents to reduce space temperature (6) Increase velocity to stop the belt slipping.
four	Insufficient stream	(1) The inlet filter is blocked (two) Impeller put on and the gap raises also considerably (three) Belt slipping (four) Big imports stress loss (5) CZPT ventilation leakage	(one) Clear the filter dust and obstruction (2) Repair the hole (3)Tighten the belt and increase the quantity of belts (4)Change the inlet pressure to the specified value (5) Check out and mend the pipeline
5	Oil leaking or oil leaking into the enclosure	(1)Higher tank placement cause leakage from the discharge port (2) Seal dress in, ensuing in shaft oil spills (three) The strain is increased than the specified value	(1)Minimize the oil level (two)Substitute the seals (3)Very clear the air vents, 2mm diameter faucet is mounted in the middle chamber, open the faucet below the wall
6	Irregular vibration and sound	(1)Bearing clearance exceeds the specified benefit or bearing put on (two) The gear backlash is way too large, not in a restricted set (three) The foreign objects and dust triggered by the impeller and the impeller, the impeller and the housing collision (four) the impeller shaft deformation induced the collision triggered by overload, (five) Friction in between the impeller and the inlet housing caused by overheating (six) Unbalance of the impeller brought on by fouling or overseas human body (seven) CZPT bolts or other fasteners are loosened	(1)Change bearings or bearing seat (2)Reassemble equipment and guarantee backlash (three)Cleaning blower, examine the circumstance is damaged (four)Check the back force, check the wheel and alter hole (five)Check the filter and back strain, enhance the gap in between the impeller inlet and the casing (six)Clear the impeller and the casing, to make sure that the impeller clearance perform (seven) Tighten the anchor bolts and leveling the base.
7	Motor overload	(1)In contrast with the required stress, the force difference is large that the back again strain or the inlet strain is high (two) Compared with the tools requirements, blower flow is also huge, so its strain boosts (3)Inlet filter is blocked, or outlet pipe is obstructed or blocked (4) Collusion or friction (caught) rotating areas (five) The oil degree is also substantial (six) Narrow V-belt is overheat, vibration is way too massive, or pulley is also tiny	(one) Lessen the pressure to the specified price (two) Exhaust the excessive gasoline into the atmosphere or lessen the blower speed (3) Take away the obstructions (four)Quickly shut down, verify the purpose (five) Modify the oil to the correct stage (six) Check the belt rigidity, and changed it with large diameter pulley.

Our Service

1. Pre offer service                                                                              2. Following market service                                          
a. suggest the suited model                                             c. on-line specialized assistance,                                                                                   
b. factory tour                                                                              d. complete life spare areas and techinical support

Gurantee

12 months gurantee for our roots blowers