The pump chamber of the dry screw vacuum pump is equipped with a pair of multi-stage spiral rotors that rotate synchronously in reverse meshing, dividing the pump chamber into several disconnected cavities. During normal operation, with the meshing rotation of the two rotors, a suction chamber is generated and the volume continuously increases to suck in gas. When the volume reaches its maximum, the suction chamber becomes an intermediate chamber; The middle chamber moves to the right to transport gas from the intake end to the exhaust end. When the middle chamber is connected to the exhaust port channel, the middle chamber becomes the exhaust chamber, and the volume of the exhaust chamber decreases to discharge gas. After all the gas is discharged, the next middle chamber begins to be connected to the exhaust channel. This cycle repeats itself to create a continuous pumping effect.

There is no lubricating oil present in the working chamber, and a clean vacuum can be obtained

Maintenance free, easy to maintain, and reduced labor costs

Dry operation solves problems such as oil pump smoke and oil leakage, ensuring safety and environmental protection.

Applicable environment: harsh working conditions such as corrosive environment, high water vapor environment, high dust environment, flammable and explosive environment, high vacuum environment, etc

The pump can be used alone or combined with Roots pump, molecular pump, etc. to form an oil-free vacuum unit, which can be used as the front-end pump of the unit

Motor optional: explosion-proof, variable frequency, variable frequency explosion-proof

Water cooled muffler (optional)

Dry screw vacuum pumps are suitable for extracting various gases and are suitable for processes such as vacuum brazing, vacuum sintering, vacuum annealing, vacuum coating, vacuum smelting, vacuum impregnation, vacuum drying, vacuum distillation, vacuum conveying, vacuum adsorption, vacuum packaging, and vacuum casting. They are widely used in industries such as aerospace, electronics, metallurgy, pharmaceuticals, chemical engineering, semiconductors, coating, food packaging, freeze-drying, and casting.

Note:
(1) The oil quantities listed above are for reference only and are usually fluoride and mineral oils. The equipment is equipped with pump oil and lubricating grease when it leaves the factory.

(2) The above cooling water volume is based on an ambient temperature of 30 ℃ and a cooling water inlet temperature of 20 ℃. The usage of circulating water may vary, with a water pressure of 0.15~0.2MPa.

(3) The LGB screw vacuum pump is a series of variable lead screw vacuum pumps.

(4) The inlet and outlet diameters shown in the table are for single pump equipment. For non single pump equipment, please refer to the equipment outline drawing for the inlet and outlet diameters.

(5) It is recommended to start the LGB variable pitch screw vacuum pump with variable frequency, and the LGB330 must be started with variable frequency.