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Screw Roots vacuum pump
LR (P) series Roots vacuum pump
Imported oil seals and bearings are used, with a runout of ≤ 0.02mm at the shaft seal to prevent oil leakage. The pump body design includes an overflow valve with automatic overload prevention function. The pump rotor support adopts a reliable anti backlash structure and high-precision helical gears, which can operate for a long time under high pressure difference. Multiple motors to choose from: explosion-proof, variable frequency, explosion-proof variable frequency, magnetic motor, water-cooled.
≤0.02mm
Runout at the shaft seal
5000L/S
Maximum extraction volume
≤50dB
Low noise and quieter
7X24 hours
Continuous work
Product Overview
The Roots vacuum pump is equipped with a pair of synchronous reverse high-speed rotating 8-shaped rotors inside the pump chamber. During operation, the two rotors produce suction and exhaust effects inside the pump chamber. This type of pump cannot exhaust separately and must be used in series with the front stage pump (such as slide valve pump, water ring pump, oil ring pump, etc.)
This type of pump is divided into two types: the ordinary ZJ type and the ZJP type with overflow valve. This type of pump is widely used in industries such as vacuum coating, chemical, food, medicine, smelting, and motor manufacturing. Especially when its front stage adopts a two-stage water ring pump, it can extract gases containing a large amount of water vapor, making it very suitable for production processes such as distillation evaporation and freeze-drying.
Product Features
Smooth operation, minimal vibration, and low noise
Low power consumption and good energy-saving effect
Fast start-up, able to reach maximum vacuum in a short period of time
The pump chamber does not require oil lubrication, which eliminates the contamination of the vacuum system by oil vapor and is insensitive to small dust
The ZJP pump is equipped with an overflow valve and has automatic overload prevention function.
Environmental Application and Selection
Applicable environment: harsh working conditions such as corrosive environment, high water vapor environment, high dust environment, flammable and explosive environment, high vacuum environment, etc
Roots pump cannot be used alone, only the front stage pump in series can be used. (It is recommended to use Lide LSV series single-stage rotary vane oil pump, LDV series two-stage rotary vane oil pump, LG series oil-free screw pump as the front-end pump)
Motor optional: explosion-proof, variable frequency, variable frequency explosion-proof, water-cooled, magnetic drive
Application area
Roots 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.
Technical parameter
| Model | Extreme pressure | Extraction rate (L/s) | Exhaust port diameter (mm) | Discharge caliber (mm) | Maximum allowable pressure difference | Overflow valve pressure difference | Equipped with power (kW) | Quality (kg) | |||
| Pa | Torr | Pa | Torr | Pa | Torr | ||||||
| LRP-70 | 0.75 | 5.6x103 | 70 | 80 | 80 | 5300 | 40 | 1.1 | 110 | ||
| LRP-150A(S)/CL | 0.75 | 5.6x103 | 150 | 100 | 100 | — | 5300 | 40 | 2.2 | 190 | |
| LRP-300A(S)/CL | 0.75 | 5.6x103 | 300 | 150 | 150 | 4300 | 32 | 4 | 265 | ||
| LRP-600G(S)/CL | 0.75 | 5.6x103 | 600 | 200 | 200 | — | 4300 | 32 | 7.5 | 570 | |
| LRP-1200G(S)/CL | 0.75 | 5.6x103 | 1200 | 250 | 200 | — | 2700 | 20 | 11 | 770 | |
| LRP-2500G(S)/CL | 0.75 | 5.6x103 | 2500 | 320 | 320 | — | 2700 | 20 | 22 | 1350 | |
| LR-150A(S)/CL | 0.75 | 5.6x103 | 150 | 100 | 100 | 8000 | 60 | 2.2 | 180 | ||
| LR-300A(S)/CL | 0.75 | 5.6x103 | 300 | 150 | 150 | 8000 | 60 | 4 | 250 | ||
| LR-600G(S)/CL | 0.75 | 5.6x103 | 600 | 200 | 200 | 5000 | 37.5 | — | 7.5 | 550 | |
| LR-1200G(S)/CL | 0.75 | 5.6x103 | 1200 | 250 | 200 | 5000 | 37.5 | 11 | 730 | ||
| LR-5000A(S)/CL | 0.8 | 5.6x103 | 5000 | 400 | 400 | 3000 | 22.5 | 30 | 1800 | ||
Note: S-water-cooled motor CL magnetic drive
