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Current Position: Home Products Roots Vacuum Pump

Roots Vacuum Pump

Model:ZJP150B


The pump consists of two figure “8” shaped rotors and two semicircular pump houses. The rotors rotate synchronously in opposite directions and high speeding. The pump cannot be used singly; it must be used as boosters combined with a backing pump such as a rotary piston or a rotary vane vacuum pump, or a liquid ring vacuum pump. These vacuum systems can get higher vacuum, a stable, fairly high pumping speed can be gained in effective pressure range. The backing pump decides the ultimate pressure of roots pump. The data of the list is lowest ultimate pressure with the standard equipment (equipped double stage oil machine vacuum pump). The Roots pumps are widely used in vacuum moulding, vacuum smelting, vacuum gas pumping, vacuum coating industry, vacuum distilling and vacuum drying of chemical and pharmaceutical industry etc. The pump is insensitive to a little dust.

Merit:
1. The lack of reciprocating parts allows a perfect dynamic balancing, because the rotors is processed by numerical control machine tool and balanced carefully. It has perfect geometry symmetry. There is certain clearance between the two rotors. The pump house and end-cover is processed by especial machine tool. It has high precision. So the pump own feature of stable operation, low noise, low vibration and high ultimate pressure.
2. The robust drive of ump and operating parts balanced carefully permit that the pump be stably operated continuously under the condition of high different pressure.?
3.They can be started quickly, and in short time ultimate pressure is reached
4. Lubrication is unnecessary as there is no contact between rotors, rotor and house, that avoid oil vapor from polluting vacuum system.
5. Good reliability characteristic. Their inherent overflow valve play auto-protective role.
6. Compact structure, low footprint design. There are three gas outlet ports that are in left, right and under pump house. It is convenient for consumer installing.

 

ZJ、ZJP pum main perfomance-parameter table

型號 Ultimate pressure(Pa) pumping speed(L/S) maximum permissible
Different pressure
(HPa)
lnlet & outlet dimensions
(mm)
Power
(kw)
Max Compression ratio with zero throughput Weight(Kg)
配用雙級油封
機械真空泵
配用單級油封
機械真空泵
lnlet outlet
ZJP-70 ≤2x10-2 ≤1x10-1 70 100 80 50 1.5 ≥35 100
ZJP-150 150 80 100 100 2.2/3 ≥40 220
ZJP-300 300 80 150 150 4 ≥40 300
ZJP-600 600 50 200 200 5.5/7.5 ≥45 575
ZJP-1200 1200 50 250 200 11/15 ≥50 860
ZJP-2500 2500 30 320 250 18.5/22 ≥50 1480
ZJ-30 30 100 50 40 0.75 ≥30 55
ZJ-70 70 100 80 50 1.5 ≥35 90
ZJ-150 150 80 100 100 2.2/3 ≥40 210
ZJ-300 300 80 150 150 4 ≥40 285
ZJ-600 600 50 200 200 5.5/7.5 ≥45 550
ZJ-2500 2500 30 320 250 18.5/22 ≥50 1480
ZJ-5000 5000 30 400 320 37/45 ≥55 3400

Model A A1 A2 A3 B B1 B2 B3 H H1 H2 H3 D D1 D2 d d1 d2 d3 d4 d5 m n p e f g k A4 B4 H4
ZJP150B 115 57.5 152 675 320 360 245 190 385 205 30 95 100 145 170 100 145 170 80 125 145 4 4 4 10 10 10 18 950 495 415
ZJP150BJ 580 197 620 675 320 370 245 190 475 295 120 185 100 145 170 100 145 170 80 125 145 4 4 4 10 10 10 18 950 495 505
ZJP300B 225 112.5 314 775 320 360 285 185 440 215 25 130 150 195 220 150 195 220 100 145 170 8 8 8 10 10 8 18 1125 520 440
ZJP300BJ 740 277 780 775 320 380 285 185 525 300 110 215 150 195 220 100 195 220 100 145 170 8 8 8 10 10 8 18 1125 705 470
ZJP600B 170 85 250 896 500 550 375 285 610 320 40 172 200 250 275 200 250 275 160 200 225 8 8 8 10 10 10 18 1270 705 650
ZJP600BJ 760 277.5 815 896 480 550 375 285 673 383 103 235 200 250 275 160 250 275 160 200 225 8 8 8 10 10 10 24 1270 800 713
ZJP1200B 948 316 1000 1225 520 630 425   675 385 65 250 250 310 335 200 260 285 200 260 285 12 12 12 10 10 10 24 1720 800 715
ZJP1200C 380 190 490 1170 480 540 425   590 300 30 165 250 310 335 200 260 285 200 260 285 12 12 12 10 10 10 24 1666 800 635
ZJP1200CJ 948 316 1000 1170 520 590 425   675 385 115 250 250 310 335 200 260 285 200 260 285 12 12 12 12 10 10 26 1666 800 720
ZJP2500 735 367.5 855 1333.5 630 720 460   665 390 40 220 320 395 425 250 310 335 320 395 425 12 12 12 12 10 12 26 1900 800 800
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