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LGB-220 screw vacuum pump


Categorize:

LGB Series


Summary:


Key words:

Vacuum equipment



LGB-220 screw vacuum pump


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LGB-300 screw vacuum pump

Parameter Copy Introduction Outline drawing Graph

The pump cavity of the dry screw vacuum pump is equipped with a pair of synchronous reverse meshing rotating multi-stage spiral rotor, which divides the pump cavity into several non-connected cavities. In normal operation, with the meshing rotation of the two rotors, a suction cavity is generated and the volume increases continuously to suck in gas. When the volume reaches the maximum, the suction cavity turns into an intermediate cavity; the intermediate cavity moves to the right to transport the gas from the intake end to the exhaust end. When the intermediate cavity is connected with the exhaust port channel, the intermediate cavity turns into an exhaust cavity; the volume of the exhaust cavity decreases to discharge gas. When all the gas, the next intermediate chamber begins to be connected to the exhaust channel. This cycle to form a continuous pumping effect.

Dry screw vacuum pump can be divided into LG type equal pitch screw vacuum pump and LGB type variable pitch screw vacuum pump.

Dry screw vacuum pump is suitable for pumping all kinds of gases, and is suitable for vacuum brazing, vacuum sintering, vacuum annealing, vacuum coating, vacuum smelting, vacuum impregnation, vacuum drying, vacuum distillation, vacuum conveying, vacuum adsorption, vacuum packaging, vacuum casting and other processes. It is widely used in aerospace, electronics, metallurgy, medicine, chemical industry, semiconductor, coating, food packaging, freeze drying, casting and other industries.

 

Schematic Construction Scheme:

Img

 

Characteristic:
Compared with the equal pitch screw vacuum pump with the same pumping speed, the variable pitch screw vacuum pump has the following advantages:
-Lower power consumption and good energy saving effect;
-Low calorific value, low pump working temperature, low cooling water consumption;
-Low operating noise;
-Smaller size and smaller footprint.

 

Main performance parameters Performance Parameter:

Model

Model

ultimate pressure

Ultimate Pressure

(50/60Hz)

pumping rate

Pumping Speed

(50/60Hz)

Intake caliber

Inlet  Diam.

( mm )

Exhaust caliber

Outlet Diam.

( mm )

with power

Motor Power

( kW )

(50/60Hz)

Cooling water quantity

Cooling Water Consumption

( L/min )

Quality

Weight

(kg)

Torr

Pa

m3/Hr

L/S

LGB70

0.015/

0.0075

2/1

250/300

70/84

65

40

7.5/7.5

2.5

295

LGB110

400/480

110/132

80

40

7.5/7.5

2.6

350

LGB160

576/690

160/192

100

65

15/15

2.8

480

LGB220

792/950

220/264

150

65

18.5/22

3

520

LGB220A

792/950

220/264

150

80*80

18.5/22

3

800

LGB330

1188/1425

330/396

150

65

30/30

4

680

LGB450

1620/1944

450/540

200

80

45/45

6

950

LGB280

0.75/0.52

100/70

1008/1210

280/336

150

65

22/22

3.2

520

LGB300

1080/1290

300/360

150

65

22/22

4

520

LGB400

1440/1728

400/480

150

65

37/37

5

680

Note: The data in the table is the data of a single pump, and the exhaust diameter and quality of the equipment will change after the muffler is equipped.

 

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LGB-300 screw vacuum pump

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