Mechanical Booster Vacuum Pump

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Water Injection Manifold – Fitted inside the square Flange of the Suction Port for uniform water spraying on the end to end length of the Lobes surface Area.

Water Cooled End Plates – DE & NDE – optionally offered.

Standard Construction Coating(Optional)

  • Housing – Cast Iron internally coated with Zylon/PFA/PEEK/PTFE
  • End Plates – cast Iron internally coated with Zylon/PFA/PEEK/PTFE
  • End covers – Cast Iron
  • Rotors – Ductile Iron Externally coated with Zylon/PFA/PEEK/PTFE
  • Shafts – Ductile Iron cast integrally with rotor externally coated with Zylon/PFA/PEEK/PTFE

Material Of Construction – SS316 Construction (Optional)

  • Housing – SS316
  • End Plates – SS316
  • End covers – Cast Iron
  • Rotors – SS316
  • Shafts – SS316
  • Bearings- Gear End – Double row ball Free end and drive shaft –Single row ball
  • Gears – Heat treated alloy steel, helical cut
  • Seals – DE & NDE – Double Lip seals mounted on SS shaft sleeve, Drive shaft – Double Lip seal
  • Lubrication – Oil splash system at both DE & NDE Oil chamber’s with water cooling Coils inside the Oil chamber.

Electro Pnumatic Booster By Pass Valve

Pump MVR250 MVR400 MVR600 MVR900 MVR1000 MVR1200 MVR2000 MVR2500 MVR3000 MVR4000
Model
Type Butterfly Butterfly Butterfly Butterfly Butterfly Butterfly Butterfly Butterfly Butterfly Butterfly
Size 1” 1” 1” 2” 2” 3” 3” 3” 3” 3”
Operation Electropnumatic Electropnumatic Electropnumatic Electropnumatic Electropnumatic Electropnumatic Electropnumatic Electropnumatic Electropnumatic Electropnumatic
Solenoid Supply Voltage 230V/24V,1ph,50Hz 230V/24V,1ph,50Hz 230V/24V,1ph,50Hz 230V/24V,1ph,50Hz 230V/24V,1ph,50Hz 230V/24V,1ph,50Hz 230V/24V,1ph,50Hz 230V/24V,1ph,50Hz 230V/24V,1ph,50Hz 230V/24V,1ph,50Hz
Solenoid FLP/NonFLP FLP/NonFLP FLP/NonFLP FLP/NonFLP FLP/NonFLP FLP/NonFLP FLP/NonFLP FLP/NonFLP FLP/NonFLP FLP/NonFLP

By pass valve has been fitted across the pump for initial rough vacuum in the system under evacuation(ie for stripping process application etc ) or faster evacuation to sub atmospheric pressure for Mechanical Booster pump operation within Maximum Pressure Differential across pump.This will also isolate the pump if acidic vapours are evacuated from system under evacuation from atmospheric pressure. Hence no chance of erosion/corrosion in the pump as the load is handled by dry vacuum pump which is having all internal parts coated with PFA. Electrically Interlocked to Vacuum transmitter & booster pump motor to close the valve when booster starts at set sub atmospheric pressure

Booster Suction Vacuum Switch/Transmitter

Pressure Transmitter Vacuum Switch
Pressure range : 0 to -760mm of Hg abs Pressure range : 0 to -760mm of Hg abs
Differential Pressure :50 mm of Hg abs Differential Pressure :50 mm of Hg abs
Type–FLP/Non FLP Type–FLP/Non FLP
Supply Voltage - 230V/24V,1ph,50Hz Supply Voltage - 230V/24V,1ph,50Hz

Booster Discharge Temperature Switch/Sensor

At discharge of booster pump,temp switch/sensor is provided to cut off the pump at excessive high discharge temp in the event of opening of any valve in system under evacuating leading to atmospheric air inrush etc.

Temp Sensor Temp Switch
Type : RTD100 Temperature range : 0 to 150 degC.
Gland –FLP/Non FLP Type–FLP/Non FLP
Temperature range : 0 to 150 degC. Differential Temperature range – 50 degC

Mechanical Booster Vacuum Pump Operation By Variable Frequency Drive (VFD)

The mechanical booster pump RPM is Varied w.r.t. the suction pressure from 1000-3000RPM by VFD.This is done through vacuum transmitter o/p signal to variable frequency drive w.r.t suction pressure. The frequency drive operation is programmed as below.

Pressure transmitter O/P current is proportional to the Inlet pressure Mechanical Booster Pump RPM setting wrt O/p Current of Pressure Transmitte

Features Of Operation Of Mechanical Booster Vacuum Pump By Variable Frequency Drive

  • Very fast evacuation from sub atmospheric pressure by Mechanical Booster Vacuum Pump is possible as the pump rotational speed is controlled by Electronic sensors having fastest response time.
  • Mechanical Booster Vacuum pump can be safe and easily operated at a maximum speed of 2900 RPM , thus pump can be operated at full efficiency as the pump efficiency in terms of suction flow rate and compressibility is highest at high pump RPM. Thus small (reduction in) size of mechanical booster and backing rotary vacuum pump.
  • Fine control of Pumping capacity to maintain the required pressure & flow in the system under evacuation to prevent carryover of vapours in to the pump or unnecessary overloading of the pump, thus eliminating the need of PID control in distillation unit and energy saving is achieved for required flow & pressure operation of the pumping unit.
  • Complete Fail safe and very easy single push button vacuum pumping unit operation. Compact in size and light weight.
Pump Model MPB250 MPB400 MPB600 MPB900 MPB1000 MPB1200 MPB2000 MPB2500 MPB3000 MPB4000
VFD Rating(with Backing Pump) 3HP, 3HP 5HP, 7.5HP, 7.5HP, 7.5HP, 10HP, 10HP, 15HP, 15HP,
VFD Rating(with out Backing Pump) 10HP 12.5HP 20HP 25HP 30HP 40HP 50HP 60HP 75HP 100HP

PLC/DCS Based Operation & Control Instrumentation For Mechanical Booster Vacuum Pump Package

  • Pressure Transmitter/Switch at suction of the Booster Pump for measurement & control of Pressure, electrically interlocked to VFD
  • Variable Frequency Drive for capacity & pressure control electrically interlocked to Booster Pump Electric Motor
  • Temperature Sensor/switch at Discharge of the Booster Pump for measurement & control of Temperature, electrically interlocked to booster pump by pass control Valve
  • Booster by pass l Valve fitted across the pump for initial rough vacuum in the system under evacuation (i.e. for stripping process application etc ) or faster evacuation to sub atmospheric pressure for Mechanical Booster pump operation within Maximum Pressure Differential across pump.

All the Instruments are skid mounted on the Mechanical Booster Pump having common base frame.

Electrical Control Panel

Type – Non Flame Proof

All Electrical Control Circuitry is placed inside the panel for sequential operation of the MVR.It consists of

  • Mains Switch – Siemens/L&T or equivalent
  • Booster Pump ”ON & OFF” Switches
  • VFD is fitted inside the panel
  • PLC is Fitted inside the panel

Control Panel is skid mounted on the common base frame of Booster Vacuum Pump with Electrical Instruments Cabling to the Electrical Motor & Instruments.

Interconnecting Piping & Common Base Frame

By pass valve with manifold at suction and is fitted across the booster vacuum pump with interconnecting piping and booster vacuum pump machine along with the Instruments and Electrical Control Panel is Skid mounted on common base frame having easy access to all the equipments for operation and maintenance.

MOC – Common Base frame & Skid – MS Piping – CS/SS

Testing Of Mechanical Booster Vacuum Pump

Mechanical Booster Vacuum Pump is tested as per BS1571 Part II

Pump Model MVR250 MVR400 MVR600 MVR900 MVR1000 MVR1200 MVR2000 MVR2500 MVR3000 MVR4000
FAD at 60Hz at 3600RPM 272m3/hr 408m3/hr 680m3/hr 918m3/hr 1224m3/hr 1360m3/hr 2040m3/hr 2720m3/hr 3400m3/hr 4590m3/hr
FAD at 50Hz at 2880RPM 225m3/ hr 325m3/hr 550m3/hr 750m3/hr 1000m3/hr 1100m3/hr 1650m3/hr 2200m3/hr 2750m3/hr 3700m3/hr
Ultimate Vacuum 1x10-3Torr/mm of Hg abs 1x10-3Torr/mm of Hg abs 1x10-3Torr/mm of Hg abs 1x10-3Torr/mm of Hg abs 1x10-3Torr/mm of Hg abs 1x10-3Torr/mm of Hg abs 1x10-3Torr/mm of Hg abs 1x10-3Torr/mm of Hg abs 1x10-3Torr/mm of Hg abs 1x10-3Torr/mm of Hg abs
Maximum Pressure Differential across pump 50Hz -170mbar 60Hz -120mbar 50Hz -160mbar 60Hz -115mbar 50Hz -160mbar 60Hz -115mbar 50Hz -150mbar 60Hz -110mbar 50Hz -150mbar 60Hz -115mbar 50Hz -100mbar 60Hz -75mbar 50Hz -90mbar 60Hz -70mbar 50Hz -85mbar 60Hz -65mbar 50Hz -80mbar 60Hz -60mbar 50Hz -75mbar 60Hz -55mbar
Motor 3HP,2pole 3HP,2pole,3 5HP, 7.5HP, 7.5HP, 7.5HP, 10HP, 10HP, 15HP, 15HP,
Power ,3ph,50/6 0Hz,440V,2880/360 0RPM ph,50/60Hz, 440V,2880/3600RPM 2pole,3ph,5 0/60Hz,440 V,2880/360 0RPM 2pole,3ph,5 0/60Hz,440 V,2880/360 0RPM 2pole,3ph,5 0/60Hz,440 V,2880/360 0RPM 2pole,3ph,5 0/60Hz,440 V,2880/360 0RPM 2pole,3ph,5 0/60Hz,440 V,2880/360 0RPM 2pole,3ph,5 0/60Hz,440 V,2880/360 0RPM 2pole,3ph,5 0/60Hz,440 V,2880/360 0RPM 2pole,3p h,50/60H z,440V,2 880/360 0RPM
Maximum Continuous Operating Pressure 50Hz-45mbar(3 3.75Torr) 60Hz-35mbar(27 Torr) 50Hz-45mbar(33. 75Torr) 60Hz-35mbar(27Torr) 50Hz-50mbar(37. 5Torr) 60Hz-40mbar(30Torr) 50Hz-57mbar(44T orr) 60Hz-48mbar(37Torr) 50Hz-57mbar(44T orr) 60Hz-48mbar(37Torr) 50Hz-57mbar(44T orr)60Hz-48mbar(37Torr) 50Hz-68mbar(51T orr)60Hz-58mbar(45Torr) 50Hz-68mbar(51T orr)60Hz-58mbar(45Torr) 50Hz-65mbar(48. 75Torr) 60Hz-55mbar(41.25Torr) 50Hz-60mbar( 45Torr) 60Hz-50mbar(37.5Torr)
Minimum Backing Pump Size 36m3/hr 60m3/hr 90m3/hr 120m3/hr 180m3/hr 200m3/hr 250m3/hr 300m3/hr 450m3/hr 600m3/h r
Suction &Discharge Port Size 2” 2” 2” 4” 4” 6” 6” 6” 8” 10”
Dimensions (Bareshaft Unit) 473.3mm( L)X228.6( W)x336.6mm(H) 524mm(L)X228.6(W)x377.9mm(H) 625.6mm(L) X228.6(W)x 377.9mm(H) 703.3mm(L) X304.8(W)x 381mm(H) 779.5mm(L) X304.8(W)x 381mm(H) 741.4mm(L) X406.4(W)x 508mm(H) 830.6mm(L) X406.4(W)x 508mm(H) 906.5mm(L) X406.4(W)x 508mm(H) 1008.1mm(L)X406.4(W)x 508mm(H) 1160mm (L)X406.4 (W)x508mm(H)
Bareshaft Unit weight 150kg 170kg 200Kg 250kg 385kg 530 585 640 720kg 800kg