We make all sorts of roots blower, centrifugal blower, Our Principal goods are as below:

Variety	Diameter	Rate of movement	Stress
ESR-MJ(Intense Kind)	Φ50~Φ300mm	.five~140m³/min	9.8KPa~ninety eight.8Kpa
ESR(Regular Kind)	Φ50~Φ350mm	.five~140m³/min	nine.8KPa~seventy eight.4Kpa
ESR-H(Higher-strain Kind)	Φ50~Φ350mm	.7~160m³/min	fifty eight.8KPa~98.8Kpa
ESR-V(Vacuum Pump)	Φ50~Φ350mm	.five~160m³/min	9.8KPa~53.3Kpa
EL Sequence	Φ200~Φ600mm	20.3~750m³/min	9.8KPa~58.8Kpa
Multistage Centrifugal Blower or C-Series	Φ250~Φ500mm	fifty~500m³/min	nine.8KPa~98Kpa
ERR-ERG Sort	Φ250~Φ500mm	one hundred twenty~420m³/min	9.8KPa~ninety eight.8Kpa

The operating basic principle of the 3-blade roots blower: two 3-lobed rotors are arranged in the cavity, and the
suction port and the discharge port are opened on the two sides of the cavity. Through 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 accomplish the
goal of blowing.

Characteristic of our roots blower:
1. Huge adjustment of the air volume
2. Lower Sounds
3. Higher efficiency
4. Low strength cosumption
five. Prolonged time lifestyle
six. Trustworthy operating, effortless routine maintenance,little footprint

The parameters of our roots blower:

Kind	Ratary Speed (r/min)	Force Increase (Kpa)	Potential (m/min)	Shaft Energy (Kw)	Motor	Unit Maximn Weight(Kg)
					Electrical power (Kw)
ESR-50	1100-2120	nine.eight-58.8	.sixty five-two.58	.3-3.fifty four	.75-four	128-158
ESR-sixty five	1100-2130	9.8-fifty eight.eight	.94-three.66	.38-4.forty six	.75-five.five	one hundred fifty five-185
ESR-eighty	1140-1900	nine.eight-fifty eight.eight	2.34-five.43	one.04-seven.42	2.2-11	one hundred fifty five-277
ESR-100	1060-1980	9.eight-58.8	four.57-nine.05	one.35-twelve.15	3-fifteen	309-377
ESR-one hundred twenty five	980-1850	nine.8-58.8	five.35-12.four	one.sixty five-5.19	5.five-18.five	408-451
ESR-125C	970-1830	9.eight-58.eight	seven.5-17.fifty seven	3.2-18.five	four-22	408-451
ESR-a hundred and fifty	810-1730	nine.8-fifty eight.eight	ten.37-27.fifteen	3.84-forty.eighty two	seven.5-45	688-848
ESR-one hundred seventy five	970-1520	9.eight-58.8	19.65-36.65	seven.2-45.95	11-fifty five	980-1080
ESR-200B	740-1450	nine.eight-fifty eight.8	19.65-44.8	ten.fifteen-sixty.forty four	15-75	1272-1546
ESR-two hundred	810-1480	9.eight-58.eight	27.sixty five-59.two	8.05-eighty,12	15-ninety	1272-1546
ESR-250B	1100-1480	nine.8-fifty eight.eight	54.77-77.fifty five	19.97-90.ninety seven	30-a hundred and ten	1490-2454
ESR-250	990-1480	nine.eight-fifty eight.eight	sixty one.4-97.52	twenty.1-117.three	thirty-132	1490-2454
ESR-300	990-1480	9.eight-fifty eight.eight	87.one-138.one	26.four-167.eight	37-185	3326-3446
ESR-350	730-1480	9.8-fifty eight.8	78.forty one-177.31		fifty five-250
ESR-50H	1230-2120	sixty three.seven-ninety eight	.45-2.02	two.05-six.twelve	three-seven.five	160--170
ESR-65H	1240-2130	63.seven-ninety eight	.78-2.fifty three	two.89-seven.fifty five	4-eleven	198-230
ESR-80H	1140-1900	63.7-ninety eight	one.82-four.fifty five	four.09-ten.1	five.5-15	316-326
ESR-100H	1060-1980	sixty three.seven-98	2.sixty five-eight.06	6.36-seventeen.two	seven.5-22	398-459
ESR-125H	980-1850	63.7-ninety eight	four.64-eleven.23	8.92-24.2	11-thirty	544-630
ESR-150H	810-1730	sixty three.seven-ninety eight	9.53-twenty five.76	seventeen.16-65	eighteen.five-seventy five	752-1571
ESR-200H	810-1480	63.seven-ninety eight	25.34-fifty six.ninety two	forty two.34-one hundred twenty	fifty five-132	1426-1934
ESR-250H	990-1480	sixty three.seven-98	58-93.seven	eighty three.2-205	90-220	2980-3468
ESR300H	990-1480	sixty three.seven-ninety eight	86.nine-134.1	114.seven-270	132-280	3476-3998
ERF-245	650-980	9.8-ninety eight	47.5-97.four	sixteen-183	18.five-200	3630-3690
ERF-250	650-980	nine.8-ninety eight	61.6-120.four	19-227	22-250	4450-4500
ERF-290	650-980	9.8-78.4	ninety two.3-128	22-213	30-250	4890-4710
ERF-295	650-980	9.8-seventy eight.4	97.3-152.5	23-227	thirty-250	4890-4880
ERF-297	650-980	9.8-seventy eight.four	87.five-167.six	26-249	30-280	5330-5520
ERF-three hundred	650-980	nine.8-seventy eight.four	101.five-188.7	29-278	37-315	5330-5520
ERF-350	650-980	nine.8-78.four	126-224.nine	34-249	45-280	5210-6470
ERG-three hundred	590-730	9.eight-ninety eight	128.3-196	38-362	forty five-four hundred	9440-15710
ERG-350	590-730	nine.eight-98	159.3-231.six	43-420	fifty five-450	9700-1571
ERG-four hundred	590-730	9.8-83.three	203.1-290.9	52-449	seventy five-five hundred	10090-11390
ERG-445	590-730	9.eight-seventy three.5	229.seven-327.eight	fifty eight-477	75-560	10600-12230
ERG-450	590-730	nine.eight-73.five	262.4-366.two	sixty four-496	seventy five-560	10600-12230
ERG-500	590-730	9.eight-sixty three.seven	327.four-452.four	seventy eight-529	ninety-560	12790-14620
ERF-240-V	650-980	-9.eight- -49	38.one-78	thirteen-seventy six	eighteen.five-ninety	3420-3285
ERF-245-V	650-980	-9.eight- -forty nine	forty seven.5-97.4	sixteen-ninety five	22-110	3425-3360
ERF-250-V	650-980	-nine.eight- -forty nine	63-one hundred twenty	19-117	22-132	3910-3830
ERF-290-V	650-980	-nine.8- -forty nine	72.6-one hundred forty four	22-136	30-160	4415-4270
ERF-295-V	650-980	-9.eight- -forty nine	76.six-152	23-a hundred forty five	30-a hundred and sixty	4425-4485
ERF-297-V	650-980	-9.8- -49	84.3-166.8	26-one hundred sixty	30-180	5000-4980
ERF-three hundred-V	650-980	-nine.8- -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	-9.eight- -forty nine	133-193	38-184	forty five-220	7800-9100
ERG-350V	590-730	-9.eight- -forty nine	163-231	43-216	55-250	9500-9470
ERG-400V	590-730	-nine.8- -49	199-290	fifty two-269	seventy five-315	9900-10130
ERG-445V	590-730	-9.8- -forty nine	224.8-326.9	58-303	75-355	9900-10130
ERG-450V	590-730	-nine.eight- -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	-13.3- -53.three	53.5-one hundred and one	21.5-102	thirty-110	3630-3360
ERF-250W	650-980	-thirteen.three- -53.3	69-127	26.5-127	30-160	3985-4115
ERF-290W	650-980	-13.three- -fifty three.three	82.6-a hundred and fifty	30.5-149	37-185	4340-4580
ERF-295W	650-980	-thirteen.three- -fifty three.three	87-158	32-158	37-185	4440-4580
ERF-297W	650-980	-13.3- -53.3	95-174	36-174	45-two hundred	5230-5130
ERF-300W	650-980	-13.3- -fifty three.three	109-195	40-193	55-220	5230-5130
ERF-350W	650-980	-thirteen.three- -53.3	129-230	50-230	seventy five-250	5840-5670
ERG-300W	590-730	-13.3- -53.3	142-197	fifty two-201	75-220	9100-9000
ERF-350W	590-730	-thirteen.three- -fifty three.3	168-234.four	59-235.5	75-280	9500-9600
ERG-400W	590-730	-thirteen.3- -fifty three.3	220-276.six	71-292	90-315	9900-10130
ERG-445W	590-730	-13.three- -53.three	244-294.6	82-331	ninety-four hundred	11230-11300
ERG450W	590-730	-13.3- -fifty three.3	275-368.5	91-366	one hundred ten-400	11230-11300
ETRF-250 (240,250)	650-980	98-196	64.8-112	135-355	160-400	8700-8600
ETRF-295 (245,295)	650-980	98-196	eighty.eight-139	167-439	185-five hundred	9200-9100
ETRF-300 (245,295)	650-980	98-176.4	102-174	206-497	250-560	10320-10500
ETRF-350 (245,295)	650-980	ninety eight-137.two	124-207	241-473	280-560	10700-11110
ETRG-400 (300,400)	590-740	ninety eight-176.4	205-273	380-773	450-900	21350-24200
ETRG-450 (350,450)	590-740	ninety eight-176.four	263-428	476-955	560-a thousand	24200-27600
ETRF-250W (240,250)	650-980	-fifty three.three--eighty	72-121	75.six-121	ninety-one hundred sixty	6100-6470
ETRF-295W (245/295)	650-980	-53.three--eighty	93.eight-154	99.5-186	one hundred ten-220	7000-6400
ETRF-300W (2505/300)	650-980	-fifty three.3--eighty	116-189	one hundred fifteen-220	132-250	7750-7760
EL81WD	580-980	9.eight-fifty eight.8	54.two-a hundred thirty	18-151	forty five-185	3595
EL82WDB	580-980	9.eight-58.eight	72.8-161	22-191	forty five-220	3860
EL83WDA	580-980	9.eight-fifty eight.9	one hundred and one-213	28.five-202	forty five-220	4300
EL84WDA	580-980	nine.eight-fifty eight.eight	129-267	35.four-252	45-280	4720
EL93WDA	580-730	nine.eight-49	230-329	fifty six.4-311	seventy five-355	7765
EL94WDA	580-730	nine.8-forty nine	263-373	sixty four-353	75-400	8130
EL95WDA	490-580	nine.eight-fifty eight.eight	308-434	eighty one.4-414	90-450	11500
EL96WDA	580	fifty eight.eight	381	497	560	11500
E397WN	a thousand-1650	forty	five-nine
E408WN	870-1650	forty	ten-22
E517WN	980-1580	forty	twenty-30
E520WN	930-1550	40	24-45
E607WN	750-1250	40	forty five-seventy six
E610WN	750-1250	40	75-one hundred thirty

Spare parts and structure of our roots blower:

Deal of our Roots Blower

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

Roots blower pack strategy very same as iron situation, just change to Fumigation Cost-free Plywood Case

Our manufacturing unit is a expert maker of Roots blowers which has above twenty years' experience in equipment
producing. It is located in Xihu (West Lake) Dis. East CZPT Park, fifty kilometers to the east of ZheJiang provincial
capital--- HangZhou. Our company also has practical visitors transportation, as it is fifteen kilometers away from
Diaozhen Town station of HangZhou-HangZhou expressway, and thirty kilometers absent from East HangZhou station of
ZheJiang -ZheJiang expressway.The leading item of our business is ESR -kind Roots Blower. The roots
vacuum pump is a new type of substantial-efficiency roots blower, which is created independently primarily based on the
domestic and foreign superior technologies. Many patented technologies have been adopted on Roots
Blower, and hence we have manufactured substantial effects in strength conservation and noise reduction, etc.. So far, our
firm has invested a lot more than thirty,000,000 RMB to introduce such superior expert equipment as
horizontal machining heart, vertical machining centre, two-way CNC floor planer, CNC lathe, CNC milling
device, CNC planer, aircraft grinder, cylindrical grinding machine, and 3 coordinates tests machine.
Besides, we have taken various measures to CZPTize the method flow this kind of as functioning and cooperating
with several scientific research units, schools and universities at house and abroad. We also continuously attempt to
take up and enhance the domestic sophisticated production technologies, so as to advertise the upgrading and
optimization of the merchandise and make the solution quality attain the sophisticated amount at property and abroad.
ESR -kind Roots Blower consists of many collection this sort of as Three-leaves Variety, Two-leaves Sort and Centrifugal
Sort,which can be more divided to hundreds of versions. The merchandise are broadly used in sewage therapy,
pneumatic conveying,vacuum packaging, aquaculture, meals processing, electric powered electrical power, petrochemical, cement,
mining and other industries. Our products have this sort of rewards as low sounds, vitality preserving, steady quality,
and prolonged provider existence, and so on.. With the income outlets throughout the domestic funds towns, our goods offer well all
over the country, and have been exported to North The united states,Russia, Malaysia, Indonesia, Vietnam, South Africa
and some other international locations. Getting obtained the ISO9001 CZPT CZPT Method Certification, we have
established and enhanced the top quality assurance of the merchandise planning, manufacturing, and set up.
From the procedure of style, analysis and growth to the completed merchandise, we have received the complete
process managed independently, as a result offering the entire foundation and trustworthiness promise for the products security
and toughness. Obtaining a perfect sales community and after-sales support, we give our buyers with greater-
good quality and much more productive service.All workers of our business sincerely welcome the broad masses of pals to
information, and negotiate organization with us.

Our Roots Blower Workshop

         Doosn Horzitonal CZPT Heart

The Application of the Roots Blower

Routine maintenance and inspection
(one) Verify all fasteners and locating pins circumstances whether they are loosening.
(2) Always verify whether or not the leakage phenomenon of the body.
(3) Spend interest to lubrication, volume of grease and noises when working,
determine regardless of whether it operates below the required circumstances.
(4) CZPT & grease: The lubricant is for medium load industrial equipment oil
(quality 220, kinematic viscosity of 198 ~ 242mm2 / s 40ºC, flash point ≥ 200ºC)
The grease is butter (synthetic lithium grease penetration 220-250, drop position ≥
190ºC). Replace the lubricant and grease soon after very first 200 hrs managing, and substitute
once more soon after a moth running. Later, replace the lubricant and grease according to the
setting and lubricant (grease) quality suggest a suitable alternative for three
months.
(5) Constantly check the inlet air filter, clear or exchange the filter in time.
(6) Blower overload at times not immediately displayed, so pay attention to
the consumption and exhaust pressure, bearing temperature and the current improve trends
of motor to figure out no matter whether the blower works typically
(7) Prior to disassembling the blower, the assembling relation and dimensions
have to be recorded or measured, make marks on parts to make certain the CZPT
specifications after assembling.
(eight) When recently machine or overhaul, the oil tank must be cleaned prior to use
and propose substitute all grease right after eight hours working.

Frequent failure cause and troubleshooting

No	Failure	Feasible factors	Elimination approaches
one	Friction amongst the impeller	(1) Impurities on the impeller, resulting in the gap is way too little (2) Gear wear, resulting in a big backlash (3) The equipment is not nicely fixed, can not sustain the impeller synchronization (4) Bearing use resulting in clearance growing.	(one) Eliminate grime and examine whether or not there is damage components (two) Adjust the gear hole, exchange the gears if the equipment backlash is greater than the common thirty% to 50% (3)Re-assemble the gears, preserve the taper speak to region is to 75% (four)Substitute the bearing
2	Collision among impeller and wall, the impeller prime and casing	(one) Set up hole is not appropriate (two) operating strain is way too high, exceeding the specified worth (3) Working temperature is way too large (four) Casing or base deformation, positioning fan failure (5) Bearing axial place is not great	(one) Adjust the gap (two) Determine causes of overloading, lowered the stress to the specified worth (3) Examine the set up accuracy and minimize the pipe tension (four) Verify and restore bearings, and to make sure the clearance (five)Relocation
3	Temperature as well large	(one) Oil in tank is as well significantly, also thick or way too dirty (two) CZPT or silencer is blocked (three)The force is greater than the specified benefit (4)Extreme wear of the impeller, big hole (5)Bad ventilation, indoor temperature is high, ensuing in inlet air's large temperature (6) The rotating pace is too low,result in the belt slipping.	(1)Decrease the oil level or rely on oil (2)Remove of blocking objects (three)Decreasing the strain through the blower (4)Repair its clearance (five)Open up vents to reduce space temperature (6) Improve velocity to stop the belt slipping.
4	Inadequate stream	(one) The inlet filter is blocked (2) Impeller dress in and the hole will increase as well a lot (three) Belt slipping (4) Big imports force reduction (5) CZPT air flow leakage	(one) Thoroughly clean the filter dust and obstruction (2) Mend the hole (3)Tighten the belt and boost the amount of belts (4)Alter the inlet pressure to the specified value (five) Verify and fix the pipeline
5	Oil leaking or oil leaking into the enclosure	(1)Large tank situation 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)Lessen the oil stage (two)Substitute the seals (3)Obvious the air vents, 2mm diameter faucet is mounted in the center chamber, open the faucet beneath the wall
6	Abnormal vibration and noise	(1)Bearing clearance exceeds the specified value or bearing put on (two) The gear backlash is as well large, not in a restricted mounted (3) The overseas objects and dust triggered by the impeller and the impeller, the impeller and the housing collision (four) the impeller shaft deformation induced the collision induced by overload, (5) Friction among the impeller and the inlet housing induced by overheating (6) Unbalance of the impeller induced by fouling or overseas physique (seven) CZPT bolts or other fasteners are loosened	(1)Replace bearings or bearing seat (two)Reassemble gear and make sure backlash (three)Cleaning blower, examine the scenario is ruined (four)Verify the again stress, check out the wheel and alter gap (five)Examine the filter and again strain, increase the hole among the impeller inlet and the casing (six)Thoroughly clean the impeller and the casing, to make sure that the impeller clearance work (seven) Tighten the anchor bolts and leveling the foundation.
seven	Motor overload	(1)Compared with the required strain, the force distinction is large that the back again stress or the inlet pressure is higher (2) In contrast with the tools demands, blower circulation is way too large, so its force increases (3)Inlet filter is blocked, or outlet pipe is obstructed or blocked (four) Collusion or friction (stuck) rotating components (5) The oil stage is as well substantial (6) Slim V-belt is overheat, vibration is also large, or pulley is way too modest	(1) Reduce the strain to the specified benefit (two) Exhaust the excessive gasoline into the atmosphere or decrease the blower speed (3) Eliminate the obstructions (four)Instantly shut down, examine the purpose (five) Alter the oil to the appropriate degree (6) Examine the belt pressure, and changed it with massive diameter pulley.

Our Services

one. Pre sell service                                                                              two. Right after market service                                          
a. advocate the suitable model                                             c. on-line specialized assistance,                                                                                   
b. manufacturing unit tour                                                                              d. total daily life spare components and techinical help

Gurantee

twelve months gurantee for our roots blowers