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LG series screw pump
LG series screw pump

Palestine LG series screw pump

The dry screw vacuum pump is a pumping device for suction and exhaust generated by a pile of mutually meshing screws and synchronous high-speed reverse rotation in the pump casing. The two screws are processed by fine dynamic balance and supported by bearings. Installed in the pump casing, there is a certain gap between the screw and the screw, so when the pump is working, there is no friction between each other, the operation is stable, the noise is low, and the working chamber does not need working medium. Therefore, the screw vacuum pump can pump out gas containing a large amount of condensable gas and dust, and it is an environment-friendly and energy-saving vacuum pump. It is an updated product of oil-sealed mechanical vacuum pump, liquid ring vacuum pump and reciprocating vacuum pump.

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PalestineScrew Vacuum Pump

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Product Description

Dry screw vacuum pump

详细信息：

Product Brand: Xingguang Vacuum

Product model: LG30-300

  Body material: alloy
Drive mode: electric Process use: vacuum Working principle: dry screw

Motor Power：4-37 kW

Ultimate pressure：5 Pa

Dimensions：

 

Product number：

LG30/70/110/150/220/300

LGB50/70/135/180/220/300/360/400

LGB70S/110S/150S/220S/300S

Do you want to learn more? Please contact us directly (Guangzhou Lidun Machinery Equipment Co., Ltd.)

020-39987161  &  lidunjixie@163.com

 

working principle：

As shown in Figure 1 and Figure 2, a pair of parallel spiral rotors 1 and 2 are installed in the screw vacuum pump. The spiral direction 1 is right-handed and 2 is left-handed. The two rotors are kept synchronized and reversed in the pump body through a stack of gears 3. Spin. There is no friction between the rotor and the rotor, and between the rotor and the pump body and a certain gap is maintained. A plurality of sealed cavities 4 are formed between the two rotors and the pump body 9, and the number of the sealed cavities is equal to the number of spiral turns of the rotor.
When the two rotors rotate in the direction shown in the figure, the space in the sealed chamber connected to the suction port 5 gradually increases, and the gas is sucked in and pushed to the exhaust side. The space in the sealed chamber 6 on the exhaust side gradually increases during the rotation. It becomes smaller and the gas is compressed to the exhaust port 7. These sealed cavities regularly "move" from the inlet side of the pump to the outlet side, so that the gas is transported out in a swirling flow. The continuous movement of the pump does not change the gas flow direction, so that the particles entrained by the gas can be pumped out as vapor within a certain range.
When running for a long time, it is necessary to pass an appropriate amount of coolant into the jacket 8 of the pump body and the side cover to cool the pump, so as to achieve temperature balance.
Since the heat of compression is mainly generated on the exhaust side 6, in order to fully cool the rotor, an appropriate amount of air or other suitable gas can be introduced into the pump cavity through the air aeration port 10 under most working conditions.

 

Features：

* There is no oil in the pump cavity, no pollution to the vacuum system, and product quality is improved;
* There is no oil in the pump cavity, which solves the problems of oil emulsification and frequent replacement of working fluid, frequent maintenance and maintenance, and saves costs;
*Dry operation will not produce oil and oil fume, which is good for environmental protection and save oil resources. It can extract gas containing a lot of water vapor and dust. After adding accessories, flammable, explosive and radioactive gases can also be removed;
*The ultimate vacuum is relatively high, suitable for medium and low vacuum. It can be connected in series with the Roots pump to form an oil-free medium vacuum pumping unit, and in series with a molecular pump, it can form an oil-free high vacuum unit;
*After adopting anti-corrosion coating treatment, it is especially suitable for product distillation, drying and degassing in pharmaceutical and chemical processes.

 

typical application：

  • Industrial furnace: vacuum brazing, vacuum sintering, vacuum annealing, vacuum pressure gas quenching, vacuum dehydrogenation, etc.
  • Vacuum coating: vacuum evaporation coating, vacuum magnetic control sputtering coating, film winding continuous coating, ion plating, etc.
  • Metallurgy: special steel smelting, vacuum induction furnace, vacuum desulfurization, degassing
  • Electrician: transformer, transformer, epoxy resin vacuum casting, capacitor vacuum oil immersion, vacuum pressure immersion
  • Drying: variable pressure vacuum drying, coal-gas tank drying, wood drying, vegetable freeze drying Chemical, pharmaceutical: product distillation, drying, degassing, material transportation, etc.
  • Note: For corrosive conditions, please contact our company.

Dry screw vacuum pump selection and ordering information：50Hz，3AC，IP54/55，F

model

Limited Data

m3/h

Ultimate vacuum

Pa

power

kW

Rotating speed

r/min

noise

dB(A)

weight

kg

LG 30

110/130

5/1

4

2880/3450

76

300

LG 70

250/300

5/1

11

2930/3500

76

570

LG 110

400/480

5/1

15

2930/3500

78

760

LG 150

540/650

5/1

18.5

2930/3500

78

840

LG 220

790/950

5/1

30

2950/3500

80

1250

LG 300

1080/1300

5/1

37

2950/3500

80

1390

LGB 50

180

5

4

2880

76

310

LGB 70

250

5

7.5

2900

76

475

LGB 135

486

5

11

2900

78

570

LGB 180

650

5

15

2940

78

840

LGB 220

790

5

22

2950

80

1220

LGB 300

1080

5

22

2950

85

1250

LGB 360

1300

5

30

2950

85

1400

LGB 400

1440

5

30

2950

85

1410

 

Detailed information such as product performance curve:

Please call, fax, email or contact our sales engineer via QQ, we will serve you wholeheartedly.

TEL: 020-39987161  E-Mail: lidunjixie@163.com   QQ:121450481

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