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Overview of rotary vane vacuum pump
Roots vacuum pump is a rotary variable volume vacuum pump. It is evolved from roots blower. It is to use two "8" shaped rotors to make synchronous reverse rotation in the pump housing to complete suction and exhaust. According to the different working range of Roots vacuum pump, it can be divided into low vacuum Roots pump with direct discharge to the atmosphere; Medium vacuum roots pump (also known as mechanical booster pump) and high vacuum multistage roots pump. Generally speaking, Roots pump has the following characteristics: it has a large pumping speed in a wide pressure range; Fast start and can work immediately; Not sensitive to dust and water vapor contained in the extracted gas; The rotor does not need to be lubricated, and there is no oil in the pump cavity; Low vibration, good rotor dynamic balance condition, equipped with exhaust valve; Low driving power and mechanical friction loss; Compact structure and small floor area; Low operation and maintenance costs.
Application scope
Roots vacuum pumps are widely used in vacuum metallurgy, as well as vacuum distillation, vacuum concentration, and vacuum drying in chemical, food, and pharmaceutical industries. They have been improved to make them more suitable for cooperating with water ring vacuum pumps to extract large amounts of water vapor and solvents.
Product advantages
The running parts inside the pump are frictionless and do not require lubrication. There is no oil in the pump chamber, which can obtain a clean vacuum. Roots vacuum unit can be composed of liquid ring vacuum pump, rotary vane vacuum pump, dry vacuum pump, etc.
Two leaf involute cycloidal profile, high-precision precision machining ensures smooth and quiet operation.
High precision gears, imported bearings, low vibration and noise. The three-dimensional water-cooled jacket design effectively cools the pump body, greatly extending the service life of the pump.
The high-strength rotor with complete symmetry and precise dynamic balance operates smoothly and reliably. The overcurrent surface can be plated with nickel, Hastelloy alloy, or lined with PTFE, which can adapt to corrosive environments of different strengths.
Product parameters
Product model | ZJP30 | ZJP70 | ZJP150 | ZJP300 | ZJP600 | ZJP1200 | ZJP2500 | ZJP3300 | ZJP5000 | |
（L/S） Actual pumping speed | 30 | 70 | 150 | 300 | 600 | 1200 | 2500 | 3300 | 5000 | |
extreme pressure（Pa） | Partial pressure | 0.05 | 0.05 | 0.05 | 0.05 | 0.05 | 0.05 | 0.05 | 0.05 | 0.05 |
Total pressure | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | |
（Pa） Protection differential pressure | 5300 | 5300 | 5300 | 4300 | 4300 | 2700 | 2700 | 1800 | 1000 | |
Zero flow compression ratio | 35 | 35 | 40 | 40 | 45 | 50 | 55 | 55 | 55 | |
（KW） Motor power | 0.75 | 1.1/1.5 | 2.2/3 | 3/4 | 5.5/7.5 | 7.5/11 | 18.5/22 | 30 | 37/45 | |
（rpm） Speed | 1500 | 3000 | 3000 | 3000 | 3000 | 3000 | 3000 | 3000 | 1500 | |
（mm） Inlet diameter | 80 | 80 | 100 | 160 | 200 | 250 | 250 | 320 | 400 | |
（mm） outlet diameter | 50 | 50 | 80 | 100 | 160 | 200 | 200 | 250 | 320 | |
dB（A） Noise | ≤77 | ≤77 | ≤79 | ≤80 | ≤82 | ≤84 | ≤85 | ≤88 | ≤88 | |
External temperature rise | ≤52 | ≤52 | ≤52 | ≤52 | ≤52 | ≤52 | ≤52 | ≤52 | ≤52 | |
Cooling form | Air cooling/water cooling | water cooling | water cooling | water cooling | water cooling | water cooling | water cooling | water cooling | water cooling | |
Main features
◆In a wide pressure range (1-1 × 105Pa) has a large pumping speed.
◆There is no oil in the pump chamber, which prevents oil vapor from polluting the vacuum system.
◆Low vibration, low noise.
◆The mechanical friction loss is small, so the drive power is small.
◆Easy to maintain and repair, low cost and long service life.
◆The condensable gas can be removed.
◆It cannot be used alone, and the front pump must be equipped. It is not allowed to start under
atmospheric pressure. It can only be started when the inlet pressure of the Roots pump is pumped to
the allowable inlet pressure by the previous stage pump. The front stage pump generally adopts liquid
ring pump or oil seal mechanical pump.
◆In view of the characteristics of extracting water vapor and organic solvent, improvements have
been made to solve the problem of emulsification of bearing cavity oil.
Overview of rotary vane vacuum pump
Roots vacuum pump is a rotary variable volume vacuum pump. It is evolved from roots blower. It is to use two "8" shaped rotors to make synchronous reverse rotation in the pump housing to complete suction and exhaust. According to the different working range of Roots vacuum pump, it can be divided into low vacuum Roots pump with direct discharge to the atmosphere; Medium vacuum roots pump (also known as mechanical booster pump) and high vacuum multistage roots pump. Generally speaking, Roots pump has the following characteristics: it has a large pumping speed in a wide pressure range; Fast start and can work immediately; Not sensitive to dust and water vapor contained in the extracted gas; The rotor does not need to be lubricated, and there is no oil in the pump cavity; Low vibration, good rotor dynamic balance condition, equipped with exhaust valve; Low driving power and mechanical friction loss; Compact structure and small floor area; Low operation and maintenance costs.
Application scope
Roots vacuum pumps are widely used in vacuum metallurgy, as well as vacuum distillation, vacuum concentration, and vacuum drying in chemical, food, and pharmaceutical industries. They have been improved to make them more suitable for cooperating with water ring vacuum pumps to extract large amounts of water vapor and solvents.
Product advantages
The running parts inside the pump are frictionless and do not require lubrication. There is no oil in the pump chamber, which can obtain a clean vacuum. Roots vacuum unit can be composed of liquid ring vacuum pump, rotary vane vacuum pump, dry vacuum pump, etc.
Two leaf involute cycloidal profile, high-precision precision machining ensures smooth and quiet operation.
High precision gears, imported bearings, low vibration and noise. The three-dimensional water-cooled jacket design effectively cools the pump body, greatly extending the service life of the pump.
The high-strength rotor with complete symmetry and precise dynamic balance operates smoothly and reliably. The overcurrent surface can be plated with nickel, Hastelloy alloy, or lined with PTFE, which can adapt to corrosive environments of different strengths.
Product parameters
Product model | ZJP30 | ZJP70 | ZJP150 | ZJP300 | ZJP600 | ZJP1200 | ZJP2500 | ZJP3300 | ZJP5000 | |
（L/S） Actual pumping speed | 30 | 70 | 150 | 300 | 600 | 1200 | 2500 | 3300 | 5000 | |
extreme pressure（Pa） | Partial pressure | 0.05 | 0.05 | 0.05 | 0.05 | 0.05 | 0.05 | 0.05 | 0.05 | 0.05 |
Total pressure | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | |
（Pa） Protection differential pressure | 5300 | 5300 | 5300 | 4300 | 4300 | 2700 | 2700 | 1800 | 1000 | |
Zero flow compression ratio | 35 | 35 | 40 | 40 | 45 | 50 | 55 | 55 | 55 | |
（KW） Motor power | 0.75 | 1.1/1.5 | 2.2/3 | 3/4 | 5.5/7.5 | 7.5/11 | 18.5/22 | 30 | 37/45 | |
（rpm） Speed | 1500 | 3000 | 3000 | 3000 | 3000 | 3000 | 3000 | 3000 | 1500 | |
（mm） Inlet diameter | 80 | 80 | 100 | 160 | 200 | 250 | 250 | 320 | 400 | |
（mm） outlet diameter | 50 | 50 | 80 | 100 | 160 | 200 | 200 | 250 | 320 | |
dB（A） Noise | ≤77 | ≤77 | ≤79 | ≤80 | ≤82 | ≤84 | ≤85 | ≤88 | ≤88 | |
External temperature rise | ≤52 | ≤52 | ≤52 | ≤52 | ≤52 | ≤52 | ≤52 | ≤52 | ≤52 | |
Cooling form | Air cooling/water cooling | water cooling | water cooling | water cooling | water cooling | water cooling | water cooling | water cooling | water cooling | |
Main features
◆In a wide pressure range (1-1 × 105Pa) has a large pumping speed.
◆There is no oil in the pump chamber, which prevents oil vapor from polluting the vacuum system.
◆Low vibration, low noise.
◆The mechanical friction loss is small, so the drive power is small.
◆Easy to maintain and repair, low cost and long service life.
◆The condensable gas can be removed.
◆It cannot be used alone, and the front pump must be equipped. It is not allowed to start under
atmospheric pressure. It can only be started when the inlet pressure of the Roots pump is pumped to
the allowable inlet pressure by the previous stage pump. The front stage pump generally adopts liquid
ring pump or oil seal mechanical pump.
◆In view of the characteristics of extracting water vapor and organic solvent, improvements have
been made to solve the problem of emulsification of bearing cavity oil.
