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Your present location:Products >> DP-type oil-free dry screw vacuum pump >> VDP-type Oil-free Variable Pitch Dry Screw Vacuum Pump
  • Name: VDP-type Oil-free Variable Pitch Dry Screw Vacuum Pump
  • Number: 014
  • Time: 2018-08-03

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Overview

VDP-type Variable-Pitch Screw vacuum pump is composed of a pair of variable pitch screw rotors which meshes in the opposite and synchronous way in the pump casing to complete the intake and exhaust cycle.Variable-Pitch Screw vacuum pump compresses the medium more efficiently with energy saving and lower temperature than constant pitch screw vacuum pump.Without any lubricants in the housing,it is perfect for medium recycling and environmental protection,which is the best upgrading products for oil-sealed,steam-jet and liquid ring pumps.The variable pitch screw rotor can ba customized and manufactured in order to best fit for clients's requirements.
 

Main charateristics

●Higher pumping efficiency and lower energy consumption compared with constant pitch screw pump

●Wide pumping rate range with direct discharge to Atm.and high ultimate vacuum of 5 Pa with single stage design.

●Easy cleaning and maintenance with N2 purging.

●High strength and stability of screw rotor made of ductile iron.

●No contact and friction between screw rotors with no lubricants and no any wasteemission and low energy consumption.

●Anti-corrosive coating for internal wet surfaces fitting for thechemical and pharmaceutical industries.

●Precise dynamic balance of screw rotors with smooth operation having lower noise,smaller vibration and longer service life.

 

Specifications

Description UNIT VDP35 DVP70 DVP110 VDP180 VDP280 VDP390 VDP550 VDP650 VDP800 VDP1100 VDP1500 VDP2000 VDP2800
Displacement m3/Hr 60 70 110 180 280 390 550 650 800 1100 1500 2000 2800
L/S 17 19 31 50 78 108 153 181 222 306 417 556 778
Ultimate pressure Torr 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04
Pa 5 5 5 5 5 5 5 5 5 5 5 5 5
Motor power

KW

1.5 3 4 5.5 7.5 11 15 18.5 22 30 45 55 75
Rotating speed RPM 2900 2900 2900 2900 2900 2900 2900 2900 2900 2900 2900 2900 2900
Suctiong flange mm DN40 DN40 DN40 DN40 DN80 DN80 DN100 DN100 DN100 DN125 DN125 DN150 DN150
Discharge flange mm DN25 DN30 DN30 DN30 DN40 DN40 DN50 DN65 DN65 DN80 DN80 DN100 DN100
Cooling water Max.Press barg 2~4 2~4 2~4 2~4 2~4 2~4 2~4 2~4 2~4 2~4 2~4 2~4 2~4
Cooling water flow rate L/min 4 4 6 6 6 6 8 8 8 8 16 16 16
Cooling water tem 5~35 5~35 5~35 5~35 5~35 5~35 5~35 5~35 5~35 5~35 5~35 5~35 5~35
Noise level dB ≤70 ≤70 ≤70 ≤70 ≤75 ≤75 ≤75 ≤80 ≤80 ≤80 ≤85 ≤85 ≤85
Dimension mm

700*450

*550

745*450

*550

953*520

*600

973*600

*680

1123*640

*680

1357*640

*680

1516*780

*800

1609*780

*800

1690*780

*800

1786*840

*930

2250*880

*1100

2250*880

*1100

2250*1400

*1370

Weight Kg 200 220 250 290 320 450 580 650 1050 1200 1800 2100 2500

 

Section View

① Suction② Discharge③ Water Jacket④ Screw Rotor⑤ Oil Tank

⑥ Gas Path⑦ Timing Gears⑧ Bearing⑨ Shaft Seal⑩ Frame Oil Seal

 

Performance curve

 

DIMENSIONS

 

Model A A1 A2 A3 A4 B B1 ΦA DN1 DN2 H H1 H2 ΦB
VDP35 899 582 527 47 214 500 210 20 40 25 423 79.5 584 Φ14
VDP70 1006 629 574 47 258 520 235.5 20 40 30 443 87 592 Φ14
VDP110 953 613 483 30 258 619 270 22 40 30 415 68 573 Φ14
VDP180 953 613 483 30 275 619 270 22 40 30 415 68 573 Φ14
VDP280 1204 720 543 36 320 640 340 32 80 40 526 106 760 Φ14
VDP390 1357 757 584 46 320 640 340 32 80 40 526 90 680 Φ14
VDP550 1440 879 673 46 410 780 436 42 100 50 607 140 930 Φ18
VDP650 1545 909 697 51 410 780 436 42 100 65 647 120 907 Φ18
VDP800 1736 964 752 51 410 780 436 42 100 65 647 120 907 Φ18
VDP1100 1747 1011 790 51 450 961 498 55 125 80 765 150 1105 Φ22
VDP1500 2055 1235 1005 80 780 1250 560 60 125 80 790 200 990 Φ22
VDP2000 2580 1650 1455 85 1000 1350 610 80 150 100 806 220 1100 Φ28
VDP2800 2875 1875 1655 100 1160 1450 700 85 150 100 906 250 1200 Φ28
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18006168180@elmvac.cn
 

Contact Us

JIANGYIN ELMVACUUM EQUIPMENT CO.,LTD.

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