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Water-Cooling Roots Pumps

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Description

LS type pressure relief valve Roots vacuum pump uses a pair of 8-shaped rotors to make the same speed reverse rotation in the pump casing to generate suction and exhaust. Each rotor is supported by two bearings. The relative positions of the two rotors are always kept constant by a pair of synchronous gears. There is a gap between the rotor and the rotor, the rotor and the pump body, and the rotor and the side cover. No friction, no lubrication required. The support of the pump rotor adopts a reliable anti-backlash structure, the rotating parts are carefully balanced, and the high-precision helical gear is adopted. Therefore , the movement is stable, the noise is low, the use is more reliable, and the long-term operation can be performed under the high pressure difference. The dynamic sealing part adopts the patented technology of the company and adopts the imported oil seal to control the runout of the shaft seal to be ≤ 0. 02mm, so the shaft seal does not leak oil. The self-weight valve is installed between the intake and exhaust ports of the pump, and its function is that the valve automatically opens when the pressure difference between the exhaust port and the intake port exceeds the valve’s own weight. This pressure difference is the maximum pressure difference at which the pump can operate reliably. Therefore , the Roots pump with relief valve has an automatic overload prevention function.

Use characteristics:

The LS Roots vacuum pump has a large pumping rate at a lower inlet pressure and is equipped with an automatic anti-overload function. However , since the structure of the pump is a dry gap seal, in order to obtain a certain pumping rate and vacuum, and reduce the backflow, the pressure of the front stage must be reduced. Therefore , the front stage vacuum pump must be connected in series with the front stage vacuum pump. After pumping a certain degree of vacuum, restart the Roots vacuum pump, which is more economical. According to actual needs, different vacuum pumps can be used as the foreline pump, such as oil seal pump and liquid ring pump. It is worth mentioning that when a liquid ring pump is used as the foreline pump, it is especially suitable for occasions where a large amount of condensable gas needs to be removed.

Series LS-9 Water-Cooling Roots Pumps

 

Model
Pumping Speed
m3/min
Ultimate Pressure
Rating Pressure
Inlet&Outlet(mm)
Cooling Water
(L/min)
Motor Power(kw)
Pa
Torr
Pa
Torr
Working Pressure
(<400hpa
Working Pressure
(>400hpa)
LS-9
1.5?04
110
4?04
300
150
9
15
11

 

Series LS-12 Water-Cooling Roots Pumps

 

Model

Series LS Water-Cooling Roots Pumps
Ultimate Pressure
Rating Pressure
Inlet&Outlet(mm)
Cooling Water
(L/min)
Motor Power(kw)
Pa
Torr
Pa
Torr
Working Pressure
(<400hpa)
Working Pressure
(>400hpa)
LS-12
12
1.5?04
110
4?04
300
150
9
18.5
15

 

Series LS-15 Water-Cooling Roots Pumps

 

Model
Pumping Speed
m3/min
Ultimate Pressure
Rating Pressure
Inlet&Outlet(mm)
Cooling Water
(L/min)
Motor Power(kw)
Pa
Torr
Pa
Torr
Working Pressure
(<400hpa)
Working Pressure
(>400hpa)
LS-15
15
1.5?04
110
4?04
300
150
10
22
18.5

 

Series LS-20 Water-Cooling Roots Pumps

 

Model
Pumping Speed
m3/min
Ultimate Pressure
Rating Pressure
Inlet&Outlet(mm)
Cooling Water
(L/min)
Working Pressure
(<400hpa)
Pa
Torr
Pa
Torr
Working Pressure
(<400hpa)
Working Pressure
(>400hpa)
LS-20
20
1.5?04
110
4?04
300
150
12
30
22

 

Series LS-30 Water-Cooling Roots Pumps

 

Model
Pumping Speed
m3/min
Ultimate Pressure
Rating Pressure
Inlet&Outlet(mm)
Cooling Water
(L/min)
tor Power(kw)
Pa
Torr
Pa
Torr
Working Pressure
(<400hpa)
Working Pressure
(>400hpa)
LS-30
30 
1.5?04
110
4?04
300
200
18
45
37

 

Series LS-40 Water-Cooling Roots Pumps

 

 

Model
Pumping Speed
m3/min
Inlet&Outlet(mm)
Inlet&Outlet(mm)
Inlet&Outlet(mm)
Cooling Water
(L/min)
Motor Power(kw)
Pa
Torr
Pa
Torr
Working Pressure
(<400hpa)
Working Pressure
(>400hpa)
LS-40
40
1.5?04
110
4?04
300
200
18
75
45
 

 

Series LS-60 Water-Cooling Roots Pumps

 

Model
Pumping Speed
m3/min
Ultimate Pressure
Rating Pressure
Inlet&Outlet(mm)
Cooling Water
(L/min)
Motor Power(kw)
Pa
Torr
Pa
Torr
Working Pressure
(<400hpa)
Working Pressure
(>400hpa)
LS-60
60
1.5?04
110
4?04
300
250
22
95
75

 

Series LS-85 Water-Cooling Roots Pumps

 

Model
Pumping Speed
m3/mi
Ultimate Pressure
Rating Pressure
Inlet&Outlet(mm)
Cooling Water
(L/min)
Cooling Water
(L/min)
Pa
Torr
Pa
Torr
Cooling Water
(L/min)
Cooling Water
(L/min)
LS-85
85
1.5?04
110
4?04
300
300
25
130
95

 

Series LS Water-Cooling Roots Pumps

 

Model
Pumping Speed
m3/min
Ultimate Pressure
Rating Pressure
Inlet&Outlet(mm)
Cooling Water
(L/min)
Motor Power(kw)
Pa
Torr
Pa
Torr
Working Pressure
(<400hpa)
Working Pressure
(>400hpa)
LS-120
120
1.5?04
110
4?04
300
350
30
185
130