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Product Name: Yhzkb Brand Zj-1200 Roots Vacuum Pump for Polyester Fibre Model NO.: ZJ-1200 Working Conditions: Dry Work Function: Mainsuction Pump Vacuum Degree: High Vacuum Exhauster Method: Positive Displacement Pump Structure: Invariant Vacuum Pump Oil or Not: Oil Application: metallurgy, Chemical, Food, Electronic Coating Pressure: High Pressure Color: Blue or as Clients Requested Certificate: Ce,ISO9001,SGS Recommended Pre-Pump: 2X-70A(2 Sets) Net Weight: 1550 Kg Voltage: 220V/380V/415V/Customized Frequency: 50Hz/60Hz Theory: Vacuum Pump Warranty: One Year Trademark: YHZKB Transport Package: Polywooden Cases Specification: 11KW; 1200L/S; 6*10^-2 Pa Origin: Anhui, China HS Code: 84141000 Product Description Pump description:Model ZJ Mechanical Booster Pump, also known as a Roots pump, is a volumetric pump.It employs a pair of rotors, identical and in 8-figure with certain clearance between them in the pump housing, rotating at the same speed in opposite directions to perform function of suction and discharge of gas. The two rotors are supported by rolling bearings in the end covers of the pump, rotating at high speed and are kept at a fixed relative position by a pair of timing gears. The end clearance between rotors and end covers are fixed by adjustable metal shims between the bearing housings and the end cover at the fixed end, which ensures one-direction expansion of the rotor when temperature rises during its operation.Four sets of inner seals (also known as piston ring) in the two end covers prevent lube oil entering into the pump housing. The shaft seal at the front-end cover, also called as framework oil seal or shaft seal, prevents leakage of air into the pump housing.In order to reduce temperature of the pump, all models of pumps (expect the two smallest models) are equipped with a gearbox cooler and front-end cover cooler.Power is transmitted through a coupling or V-belt from the motor to the driving shaft of the pump and then through synchronizing gears to the driven shaftSpecifications: ModelSuction capacity (L/S)Limit vacuum (≤Pa)Speed (rpm)Motor Power (kw)Inlet Dia. (mm)Outlet Dia. (mm)Weight (Kg)Recommended backing pump(model) ZJ-70 70 6x10-2 2780 1.5 80 50 87 2X-8 ZJB-70 5x10-2 100 ZJ-150A 150 6x10-2 2900 3 100 100 198 2X-15 ZJB-150 5x10-2 215 ZJ-300 300 6x10-2 1450 4 150 150 490 2X-30A ZJB-300 5x10-2 480 ZJ-600 600 6x10-2 2900 5.5 150 150 490 2X-70A ZJB-600 5x10-2 503 ZJ-1200A 1200 6x10-2 1450 11 300 300 1550 2X-70A (2sets) ZJB-1200 5x10-2 250 250 1580Applications:The main advantage of Roots vacuum pump is that it can operate with high pumpingspeed under lower suction pressures, however, has to be backed by a backing pump.Under normal working conditions, it is permissible to not add by-pass pipes.Roots vacuum pump should not operate with a higher-pressure difference than allowable,otherwise overheating and overload will cause damage of Roots vacuum pump.Therefore, proper backing pump and necessary protection devices must be considered.Oil sealed mechanical pump is usually selected as the fore vacuum pump. Other types ofbacking pumps may be used where theirrequirement for ultimate vacuum is not too strict.Particularly, when gas pumped containing largeamount of vapor, water-ring vacuum pump maybe an ideal option though ultimate vacuumachieved is on the low side.Product display:Company overview:Contact us:
