Roots Vacuum Pumps

Roots Vacuum Pumps

Roots Vacuum Pumps Operating Principle and Features: The series SYF roots vacuum pump is with overflow valve. The figure-of-eight rotors are counter-rotating at a constant speed inside the pump housing for suction and exhaust of gas....
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http://www.china-vacuum-pumps.com/vac/roots-vacuum-pumps.htm


Roots Vacuum Pumps

Operating Principle and Features:

The series SYF roots vacuum pump is with overflow valve. The figure-of-eight rotors are counter-rotating at a constant speed inside the pump housing for suction and exhaust of gas. Two rotors are supported by two bearings and synchronized by a gear, which ensures these two rotors in certain relative positions. They are near to one another and to the housing without actual contacting, so lubrication is unnecessary in the working housing. The carefully balanced operating parts and high precision bevel wheels ensue the pump be operated stably and continuously under the condition of high-pressure difference. Dynamic seal part use our patent technology and imported oil seals, the vibration amount of shaft on the shaft seals is controlled to less than 0.02mm.


A gravity valve is installed between the suction and exhaust part of the pump. The function of the gravity valve is as follows, when the pressure difference between the suction and exhaust part is over the weight of the valve, the valve opens automatically, which makes the pressure difference always keep in a fixed controllable value, the value is the allowable highest pressure difference to ensure the pump work normally and so that in fact, the roots vacuum pump with overflow valve is a kind of overload self-protective pump.


Series SYF roots vacuum pump with overflow valve has substantially higher speed at relatively lower inlet pressure and it is possessed overload self-protective function. Because it is a pump of dry clearance seal construction, if a certain pumping speed rate and an ultimate vacuum need to be obtained, it is necessary to supply a lower inlet pressure for reducing the back flow, therefore, a pump must be backed in use, roots vacuum pump should be started soom after its inlet pressure reaches a permissible value for economization.

QQ截图20181107174657

It is permit to select different kinds of pump as the backing pump for factual requirements, such as oil seal pump and liquid ring vacuum pump. When pumping the gas containing large amount of vapor, the liquid ring vacuum pump is the ideal backing pump.


1(001) 2(001)
SYF-150 SYF-300
3(001) 4(001)
SYF-600 SYF-1200(Patent Product)
5(001) 6(001)
ZJP-1800(Patent Product) ZJP-2500(Patent Product)


Performance Parameter:

Model

Ultimate Pressure

Pumping Speed

Pressure Diff.at    Overflow Valve

Inlet Diam.

Outlet Diam.

Motor Power

Recommended Backing    Pump

Cooling Water    Consumption

Weight

(Pa)

(L/S)

(Hpa)

(mm)

(mm)

(Kw)

(L/min)

(Kg)

SYF-30

30-2

30

52

50

40

0.75

2H-8

/

85

SYF-70

30-2

70

52

80

50

1.1

2H-15

/

110

SYF-70D

30-2

70

48

100

100

1.5

2H-15

20

220

SYF-150

30-2

150

48

100

100

2.2

2H-30

25

220

SYF-300

30-2

300

58

150

150

4

2X-70,2H-70

30

310

SYF-600

50-2

600

32

200

200

7.5

H-150,HGL-150

35

790

SYF-1200

50-2

1200

44

250

200

11

H-150,HGL-150

40

950

ZJP-1800

50-2

1800

32

250

250&200

15

2-HG150,ZJP600/HG150

50

1200

ZJP-2500

50-2

2500

44

320

320&250

18.5

2-HG150,ZJP600/HG150

60

1500


Series ZJ-150A Roots Vacuum Pumps

QQ截图20181107172249


Model

Uitimate

Pumping

Inlet/Outlet Dia(mm)

Max.Permiss able Diff.Pressure

Motor Power(kw)

Recom-ended Backing Pump

Pressure

speed(l/s)

Pa

Torr

Pa

Torr

ZJ-150A

50-2

3.70-4

150

100/100

803

75

2.2

2H-30A


Series ZJ-300 Roots Vacuum Pumps

Model

Uitimate

Pumping

Inlet/Outlet Dia(mm)

Max.Permiss able Diff.Pressure

Motor Power(kw)

Recom-ended Backing Pump

Pressure

speed(l/s)

Pa

Torr

Pa

Torr

ZJ-300

50-2

3.70-4

300

150/150

603

45

4

2H-70A

10-1

80-4

H-70B


Series ZJ-600 Roots Vacuum Pumps

3


Model

Uitimate

Pumping

Inlet/Outlet Dia(mm)

Max.Permiss able Diff.Pressure

Motor Power(kw)

Recom-ended Backing Pump

Pressure

speed(l/s)

Pa

Torr

Pa

Torr

ZJ-600

50-2

3.70-4

600

250/150

4.503

40

7.5

2H-70A

10-1

80-4

H-150


Series ZJ-1200B Roots Vacuum Pumps

Model

Uitimate

Pumping

Inlet/Outlet Dia(mm)

Max.Permiss able Diff.Pressure

Motor Power(kw)

Recom-ended Backing Pump

Pressure

speed(l/s)

Pa

Torr

Pa

Torr

ZJ-1200B

10-1

80-4

1200

250/200

403

30

11

H-150

50-2

3.70-4

ZJ300/2H-70A


Series ZJ-5000 Roots Vacuum Pumps

QQ截图20181107172621

Model

Uitimate

Pumping

Inlet/Outlet Dia(mm)

Max.Permiss able Diff.Pressure

Motor Power(kw)

Recom-ended Backing Pump

Pressure

speed(l/s)

Pa

Torr

Pa

Torr

ZJ-5000

50-2

3.70-4

5000

400/320

303

22.5

45

ZJ1200/H-300


Series ZJ-10000 Roots Vacuum Pumps

Model Uitimate Pumping Inlet/Outlet Dia(mm) Max.Permiss able Diff.Pressure Motor Power(kw) Recom-ended Backing Pump
Pressure speed(l/s)
Pa Torr Pa Torr
ZJ-10000 50-2 3.70-4 10000 500/400 2.503 19 55 ZJ1200/H-300


Series ZJ-20000 Roots Vacuum Pumps

Model Uitimate Pumping Inlet/Outlet Dia(mm) Max.Permiss able Diff.Pressure Motor Power(kw) Recom-ended Backing Pump
Pressure speed(l/s)
Pa Torr Pa Torr
ZJ-20000 50-2 3.70-4 20000 630/500 203 15 75 ZJ5000/ZJ1200/H-150


Series ZJP-30A Roots Vacuum Pumps

Model

Uitimate 

Pressure

Pumping speed(L/S)

Diff.Permiss at overflow Value

Inlet/Outlet Dia.

Motor Power(kw)

Recomm-ended Backing pumps

pa

Torr

pa

Torr

(mm)

ZJP-30A

5/10-2

3.7/10-4

30

4/103

30

50/40

0.75

2H-8


Series ZJP-70A Roots Vacuum Pumps

QQ截图20181107172900


Model

Uitimate Pressure

Pumping speed(L/S)

Diff.Permiss at overflow Value

Inlet/Outlet Dia.(mm)

Motor Power(Kw)

Recomm-ended Backing pumps

pa

Torr

pa

Torr

ZJP-70A

5/10-2

3.7/10-4

70

4/103

30

80/50

1.1

2H-15


Series ZJP-150 Roots Vacuum Pumps

Moter

Uitimate Pressure

Pumping speed(L/S)

Diff.Permiss at overflow Value

Inlet/Outlet Dia.(mm)

Motor Power(kw)

Recomm-ended Backing pumps

pa

Torr

pa

Torr

ZJP-150

50-2

3.70-4

150

403

30

100/100

2.2

2H-15,2H-30A


Series ZJP-300 Roots Vacuum Pumps

QQ截图20181107173028

Model

Uitimate Pressure

Pumping speed(L/S)

Diff.Permiss at overflow Value

Inlet/Outlet Dia.(mm)

Motor Power(kw)

Recomm-ended Backing pumps

pa

Torr

pa

Torr

ZJP-300

50-2

3.70-4

300

403

30

150/150

4

2H-30A,2H-70A


Series ZJP-600 Roots Vacuum Pumps

QQ截图20181107173116

Model

Uitimate Pressure

Pumping speed(L/S)

Diff.Permiss at overflow Value

Inlet/Outlet Dia.

Motor Power(kw)

Recomm-ended Backing pumps

pa

Torr

pa

Torr

(mm)

ZJP-600

50-2

3.70-4

600

2.703

20

200/200

7.5

2H-70A


Series ZJP-1200B Roots Vacuum Pumps

QQ截图20181107173209

Model

Uitimate Pressure

Pumping speed(L/S)

Diff.Permiss at overflow Val

Inlet/Outlet Dia.

Motor Power(kw)

Recomm-ended Backing pumps

pa

Torr

pa

Torr

(mm)

ZJP-1200B

50-2

3.70-4

1200

2.703

20

250/200

11

ZJ300/H-70B



Series ZJP-2500 Roots Vacuum Pumps

QQ截图20181107175112

Model

Uitimate Pressure

Pumping speed(L/S)

Diff.Permiss at overflow Value

Inlet/Outlet Dia.

Motor Power(kw)

Recomm-ended Backing pumps

pa

Torr

pa

Torr

(mm)

ZJP-2500

50-2

3.70-4

2500

2.703

20

320/320

22

ZJ600/H-150


FAQ:

1.CAN YOU DO CUSTOMIZED PRODUCTS?

Yes,we are mainly doing customized products according to the customers’ drawings or samples.


2.HOW MANY EMPLOYEES OF YOUR COMANY?WHAT ABOUT THE TECHNICISTS?

We now have more than 650 employees, including 10 engineers and 50 technicians.


3.HOW TO DELIVER THE GOODS TO US?

Usually we will ship the goods to you by sea,because we are in Ningbo,and we are only 35 kilometers away from the Ningbo Port,it is very convenient and efficient to ship goods to any other countries.Of course,if your goods are very urgent,the Ningbo Airport and Shanghai Airport are also very nearby.


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