MG Industrial Rubber Lobe Pump

MG Industrial Rubber Lobe Pump

MG Industrial Rubber Lobe Pump

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Description

WHAT IS MG INDUSTRIAL RUBBER LOBE PUMP FOR?

The MG Series of Industrial Rubber Lobe Pump are Positive Displacement Self-Priming & Reversible Rotary Lobe Pumps designed for the transfer of viscous, fibrous, abrasive and solids laden products within the following industries:

  1. Industrial: Lime milk, molasses, resins, paper & pulp, ceramics, machining of glass and marble
  2. Water Treatment: Sewage, dewatered sludge, sludge clarifier, activated sludge, digested sludge, lime milk, raw sludge, polymers & slurries
  3. Petro-Chemical: Crude oil, solvents, heavy oils, waste oils
  4. Anaerobic Digestion: Digestate, Feedstock Supply, Waste Waters & Slurries
  5. Marine: Waste Waters & Dirty Oil Transfers

The range covers 9 models with capacities up to 300 m³/hr, discharge pressures up to 5 bar, suction lifts up to 5 m and solids handling capacity up to up to 30 mm. Swan necks on the suction and discharge can be provided to aid in self-priming applications. Pump bodies are constructed from GG 30 continuously cast spheroidal graphite Iron with wear plates in wear resistant steel & triple seal design as standard. Lobes can be supplied in several different elastomer coatings including: NBR, SBR, XNBR, EPDM, and FPM. Lobe replacement is facilitated by a front pull-out design.

Different drive options are available to suit a wide variety of site-specific requirements such as ATEX rated motor, hydraulic drives for truck mounting and diesel/petrol drives for portable systems. Particular care has been taken in the design of these units to improve pump life and limit maintenance intervals in arduous and challenging applications. Each pump model has been through stringent and severe laboratory testing and field tests before being launched. Each pump is then individually tested before delivery.

MG Industrial Rubber Lobe Pump Working Principle

MG Industrial Rubber Lobe Pump OPERATING PRINCIPLE

2 synchronised lobes revolve within the pump housing. The lobes do not come into contact with one another, this is prevented by timing gears located within the gearbox. As the lobes rotate, they create an expanding cavity at the pump suction which draws the fluid into the pump. The fluid is trapped by the lobes in pockets as they rotate which is then conveyed around the outside of the lobes, passing any solids with it along the way, and discharging out of the pump casing.

The pump shaft support is facilitated by bearings located outside of the fluid in the gear box, limiting the discharge pressure to 5 bar.

Capacity is directly related to the speed at which the pump is operated at and the flow is reversible by simply changing the direction of rotation of the drive.

MG Industrial Rubber Lobe Pump OPERATING PRINCIPLE2

 

 

 

 

 

 

 

MG Industrial Rubber Lobe Pump Construction

MG Industrial Rubber Lobe Pump FEATURES

Housing GG30 Cast Iron
Lobes Cast Iron Coated in NBR, SBR, XNBR, EPDM and FPM
Shoulders / Wear Plates Wear Resistant Steel (400 HB)
Shaft Seals Double Radial Seals, Grease Lubricated & sliding on Hardened Bushes. Standard Mech Seals or Reinforced Seals (prepared to withstand higher operating pressures; equipped with a flushing system) on request
Manifolds Galvanised Steel

 

Lobes
NBR EPDM Viton SBR Polyurethane
Generally Resistant

to most

Hydrocarbons, Fats, Oils Vegetable & Animal Fats, Oils, Ozone, Aromatics, Aliphatic, Hydraulic Fluids, Chemicals Elongated Hydrocarbons, Acids Acids, Water & Chemicals

Good abrasion Resistance

Mineral Oils, Aromatic & Aliphatic Hydrocarbons
Generally Attacked by Ozone, Ketones, Esters, Aldehydes, Nitro & Chlorinated Hydrocarbons Mineral Oils, Solvents, Aromatic Hydrocarbons Ketones, Low Molecular Weight Esters, Nitro Containing Compounds Ozone, Oils, Fats, Strong Acids & Hydrocarbons Acids, Phenols, Toluene, Aldehydes & Ketones, Chlorinated Hydrocarbons
Resistance to Oils Very good Poor Excellent No Very good
Fuels Good Poor Excellent No Very good
Ketones Fair Excellent Poor Fair Poor
Hydrocarbons Good Poor Excellent No Poor

 

MG Industrial Rubber Lobe Pump Lobe Maintenance

MG Industrial Rubber Lobe Pump MAINTENANCE

Thanks to their front pull-out design, the lobes can be easily and quickly checked and replaced by removing the front cover without interfering with the seals or transmission and leaving the pump in the pipework. This applies to all models except: MG 7, 14, 20, 27 & 40.

 

 

 

MG Industrial Rubber Lobe Pump Supported Shaft Design

MG Industrial Rubber Lobe Pump Supported Shaft Design

Models MG 35 & MG 50 are available in supported shaft design to reduce shaft deflection when pumping particularly viscous fluids.

 

 

 

 

 

 

 

 

MG 02 & MG 04 Mounting Position & Leakage Checking System

MG 02 & MG 04 Mounting Position & Leakage Checking System

No Description
1 Oil Filling Plug
2 Oil Level
3 Oil Drain
4 Leakage Check Point (¾”) – The valve must be located underneath the pump. Allows for consistent checking of leakages from the seals. This can be fitted with a pressure gauge to visually monitor the condition of the seals.

Leakage Checking System

5 Inlet / Outlet Connections
6 Suction & Discharge Pressure Gauge Port

 

MG 17, 35 & 50 Mounting Position & Leakage Checking System

MG 17, 35 & 50 Mounting Position & Leakage Checking System

No Description
1 Oil Filling Plug
2 Oil Level
3 Oil Drain
4 Leakage Check Point (¾”) – The valve must be located underneath the pump. Allows for consistent checking of leakages from the seals. This can be fitted with a pressure gauge to visually monitor the condition of the seals.

Leakage Checking System

 

MG Industrial Rubber Lobe Pump Central Lubrication System, MG 02 & MG 04

MG Industrial Rubber Lobe Pump Central Lubrication System, MG 02 & MG 04

Upon request, MG 02 & MG 04 models can be supplied with central lubrication systems for their seals. The system comprises a control valve (D) and grease filling cartridge (C). The grease is distributed from the cartridge & valve through flexible piping. It is commonly used for particularly stick or abrasive fluids which can damage the seals faces. Tapflo supply the control valve and piping system, grease filling cartridge needs to be supplied by the customer. The connection for the cartridge is ¼” ISO G (F).

 

 

 

MG Industrial Rubber Lobe Pump Sealing Systems, MG 7 – 40

MG Industrial Rubber Lobe Pump Sealing Systems, MG 7 - 40

Models MG 7 – 40 can be delivered with 3 different sealing systems.

  1. Standard Triple Seal Version – 3 seals are fitted between the working chamber and the bearings. The seals are the same for all models from MG 07 – 40 meaning reduced stocking of seal types & quantities when operating more than one model / size on site.
  2. Lubricated Triple Seal Version – Same as the above however fitted with a Central Lubrication System
  1. Hardened Tripe Seal Version – For applications with particularly abrasive fluids, hardened seals are available & with ceramic coating.

 

MG Industrial Rubber Lobe Pump Syphon Manifolds, MG 7, 14 & 27

MG Industrial Rubber Lobe Pump Syphon Manifolds, MG 7, 14 & 27

Upon request, models MG 7, 14 & 27 can be fitted with Syphon Manifolds. The shape of these manifolds allows for fluid to remain in the pump housing when the pump is stopped. This subsequently allows for better self-priming ability on start up. The manifolds can be washed or emptied by means of a threaded drain port (W2). Suction and Discharge Pressures can be monitored by means of attaching a Pressure Gauge or Switch to port W1. Additionally, the manifolds are equipped with two sockets (V) that can be used to bore threaded holes for installation of a bypass in between suction and discharge.

MG Industrial Rubber Lobe Pump Capacity Range Tech info

MG Industrial Rubber Lobe Pump Performance

MG Industrial Rubber Lobe Pump Performance Data, MG 02 & MG 04 performance curves

MG Industrial Rubber Lobe Pump PERFORMANCE2

Model Displacement, l/100 rev Max Diff.

Pressure, Bar

Min Speed, rpm Max Speed, rpm Max Flow, l/min Max Req. Power, kW Weight, Kg
MG 02 23 5 180 1000 230 4.0 50
MG 04 46 3 180 1000 460 5.1 60

 

Drive Type Poles Power, kW Speed, rpm Flow Rate, l/min Pressure, Bar Weight, Kg
MG 02 MG 04 MG 02 MG 04 MG 02 MG 04
1 Direct 6 5.5 960 220 440 5 3 135 145
2 Pulley 4

 

115 125
3 Pulley 120 130
4 Speed Variator 4.0 200-1000 45-230 90-460 4 1.5 150 160
5 Petrol 2.7 1000 230 460 2 1.0 105 115
6 Petrol 5.2 1000 230 460 5 3 115 125
7 Diesel 4.6 1000 230 460 5 2 130 140
Drive Type Disp. cc/rev Oil Flow, l/min Oil Pressure, Bar Flow Rate, l/min Pressure, Bar Weight, Kg
MG 02 MG 04 MG 02 MG 04 MG 02 MG 04
8 Hydraulic 27 27 155 230 460 5 3 70 80

 

MG Industrial Rubber Lobe Pump Performance Data, MG 7, 14, 20, 27 & 40

MG Industrial Rubber Lobe Pump PERFORMANCE3

Performance data based on 540 rpm with water @ 20ºC

 

MG Industrial Rubber Lobe Pump Viscosity Changes vs Suction Pressure, MG 7, 14, 20, 27 & 40

Changes in viscosity can have a direct impact on the suction pressure to the pump. As temperatures drop the fluids viscosity will increase and therefore result in increases pressure drops on the suction pipework and over pressure in the discharge line. To prevent anomalies during operation and risk of cavitation, it is recommended to maintain an adequate suction pressure. Before start-up it is always recommended to ensure that the system’s NPSHa is higher than the pump’s NPSHr value. For reference, below is a chart detailing the NPSHr valves of the models MG 7, 14, 20, 27 & 40.

MG Industrial Rubber Lobe Pump Viscosity Changes vs Suction Pressure, MG 7, 14, 20, 27 & 40

Data reported is based on water @ 20ºC. Should a viscous product be pumped then we suggest reducing the pressure losses across the lines by reducing the operating speed, ensuring the pipework is adequately sized and wherever possible install the pump below the fluid level with the shortest suction pipework lengths & number of bends.

 

 

 

 

 

 

 

MG Industrial Rubber Lobe Pump Performance Data, MG 17, 35 & 50

MG Industrial Rubber Lobe Pump PERFORMANCE4

MG Industrial Rubber Lobe Pump Dimensional Data, MG 02 & 04 Dimensions

 Dimensions in mm, dimensions in brackets refer to MG 04

MG Industrial Rubber Lobe Pump Dimensional Data, MG 02 & 04

MG Industrial Rubber Lobe Pump Dimensional Data, MG 02 & 04 2

MG Industrial Rubber Lobe Pump Dimensional Data, MG 02 & 04 3

 

MG Industrial Rubber Lobe Pump Dimensional Data, MG 7, 14, 20, 27 & 40

MG Industrial Rubber Lobe Pump Dimensional Data, MG 7, 14, 20, 27 & 40

  Dimensions, mm Weight
Model A B C D E F G H I L M N P Kg
MG 7 135 140 135 158 14 ASA E 1 3/8”

DIN 9611A

495 410 230 DN 80 274 463 35g6 97
MG 14 223 505 470 DN 100 105
MG 20 289 575 534 DN 150 119
MG 27 366 610 613 146
MG 40 497 855 747 DN 175 170

 

Electrically Driven

MG Industrial Rubber Lobe Pump Dimensional Data, MG 7, 14, 20, 27 & 40 ELECTRICALLY DRIVEN

  Model
Detail MG 7 MG 14 MG 20 MG 27
A 1500 1500 1500 1500
B 740 740 740 740
C 780 820 820 850
Weight, Kg 270 310 345 410
Flow Rate, l/min @ 460 rpm (3 Bar) 550 1100 1600 2000
Required Power, kW 5 10 15 17
Motor Power, kW 5.5 11 18.5 18.5
Protection Class IP 55 IP 55 IP 55 IP 55
Voltage / Frequency 380 / 50 380 / 50 380 / 50 380 / 50

 

Hydraulically Driven

Hydraulically Driven

  Model
Detail MG 7 MG 14 MG 20 MG 27
A 645 710 775 865
B 270 270 270 270
C 500 500 500 500
Weight, Kg 132 142 160 187
Displacement, cm³/rev 34 44 61 72
Oil Pressure, Bar 120 140 140 140
Speed, rpm 2050 2050 2050 2050
Motor Connections ¾” 1” 1¼” 1¼”
Flow Rate, l/min @ 540 rpm (5 Bar) 650 1300 1800 2500

 

Diesel Driven

Diesel Driven

  Model
Detail MG 7 MG 14 MG 20 MG 27
A 1430 1550 1700 1700
B 750 750 845 845
C 930 930 1960** 1960**
Weight, Kg 390 430 660 700
No. of Cylinders 2 2 2 2
Power, kW 14 18 23 23
Displacement, cm³ 1120 1332 2078 2078
Max Discharge Pressure 5* 5* 4.5* 5*
Flow Rate, l/min @ 520 rpm 650 1300 1800 2400

 

* 3 Bar available on request

** Horizontal Exhaust available on request, C = 1150

 

MG Industrial Rubber Lobe Pump Dimensional Data, MG 17, 35 & 50

 MG 17

MG Industrial Rubber Lobe Pump Dimensional Data, MG 17, 35 & 50 MG 17

 

MG 35 & 50

MG Industrial Rubber Lobe Pump Dimensional Data, MG 17, 35 & 50 2

 

MG 35 & 50 – Supported Shafts

MG 35 & 50 – Supported Shafts

Additional information

Pump Sizes

MG 02, MG 04, MG 07, MG 14, MG 17, MG 20, MG 27, MG 35, MG 40, MG 50

Connection Size

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Drive Type

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Flow Rate

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Pressure

Material

Self Priming

Solids Handling

Viscosity

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