Pump description:
Model ZJ CZPT Booster Pump, also identified as a Roots pump, is a volumetric pump.
It employs a pair of rotors, equivalent and in 8-figure with specified clearance among them
in the pump housing, rotating at the same pace in reverse directions to execute
purpose of suction and discharge of gasoline. The two rotors are supported by rolling bearings
in the conclude covers of the pump, rotating at high speed and are retained at a
mounted relative situation by a pair of timing gears. The conclude clearance in between rotors and
finish addresses are fastened by adjustable metal shims among the bearing housings and the
stop include at the mounted conclude, which makes certain one particular-path expansion of the rotor when
temperature rises for the duration of its procedure.
4 sets of internal seals (also identified as piston ring) in the two finish addresses avoid lube oil
coming into into the pump housing. The shaft seal at the front-stop protect, also named as
framework oil seal or shaft seal, helps prevent leakage of air into the pump housing.
In get to decrease temperature of the pump, all versions of pumps (expect the two
smallest types) are outfitted with a gearbox cooler and entrance-finish go over cooler.
Electricity 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 shaft
Technical specs:
| Model | Suction ability (L/S) |
Limit vacuum (≤Pa) |
Speed (rpm) |
Motor Electricity (kw) |
Inlet Dia. (mm) |
Outlet Dia. (mm) |
Excess weight (Kg) |
Advisable backing pump(design) |
| ZJ-70 | 70 | 6×10-two | 2780 | 1.five | eighty | 50 | 87 | 2X-eight |
| ZJB-70 | 5×10-2 | 100 | ||||||
| ZJ-150A | 150 | 6×10-2 | 2900 | 3 | one hundred | 100 | 198 | 2X-15 |
| ZJB-a hundred and fifty | 5×10-2 | 215 | ||||||
| ZJ-300 | 300 | 6×10-2 | 1450 | 4 | a hundred and fifty | one hundred fifty | 490 | 2X-30A |
| ZJB-three hundred | 5×10-2 | 480 | ||||||
| ZJ-600 | 600 | 6×10-two | 2900 | five.5 | a hundred and fifty | a hundred and fifty | 490 | 2X-70A |
| ZJB-600 | 5×10-2 | 503 | ||||||
| ZJ-1200A | 1200 | 6×10-two | 1450 | 11 | 300 | 300 | 1550 | 2X-70A (2sets) |
| ZJB-1200 | 5×10-2 | 250 | 250 | 1580 |
Applications:
The main advantage of Roots vacuum pump is that it can operate with high pumping speed under reduce suction pressures, nevertheless, has to be backed by a backing pump.Under typical functioning circumstances, it is permissible to not add by-go pipes.Roots vacuum pump must not function with a larger-pressure distinction than allowable,otherwise overheating and overload will cause damage of Roots vacuum pump.
Therefore, correct backing pump and needed safety units need to be deemed.Oil sealed mechanical pump is usually chosen as the fore vacuum pump. Other types of backing pumps may be used where their requirement for greatest vacuum is not too rigid. Particularly, when gas pumped made up of large amount of vapor, water-ring vacuum pump maybe an ideal option though ultimate vacuum achieved is on the lower facet.
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