Basic Info.
Screw Number
Double Screw Pump
Screw Suction Method
Single Suction
Pump Shaft Position
Horizontal
Application
Sewerage Treatment, Food, Chemical
Transport Package
Wooden Case
Specification
Ductile iron
Product Description
OverviewVDP-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 Characteristics·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.
SpecificationsDescription | 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 | ºC | 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.Suction 2.Discharge 3.Water Jacket 4.Screw Rotor 5.Oil Tank
6.Gas Path 7.Timing Gears 8.Bearing 9.Shaft Seal 10.Frame Oil Seal
Performance curve
Dimensions Model SizesModel | 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 |
Address:
No. 1-2 Longgang Road, Lingang Street, Jiangyin, Wuxi, Jiangsu
Business Type:
Manufacturer/Factory, Trading Company
Business Range:
Industrial Equipment & Components
Company Introduction:
Our company offers variety of products which can meet your multifarious demands. We adhere to the management principles of "quality first, customer first and credit-based" since the establishment of the company and always do our best to satisfy potential needs of our customers. Our company is sincerely willing to cooperate with enterprises from all over the world in order to realize a win-win situation since the trend of economic globalization has developed with anirresistible force.