Rotary Lobe Pumps

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  Serving Industrial, Municipal & Sanitary Industries

  Pumping fluids that are highly viscous, abrasive, laden with solids or all of these is the daily task for the Megator Lobe Pump.

  Due to a number of carefully engineered features, the Megator Rotary Lobe Pump manages such a task whilst ensuring a low life cycle cost.

  The gentle action of the two interacting rotors creates fluid movement through the pump, with minimal damage to suspended particles. Various types of rotor materials can be used, combined with a wide range of materials for all other wetted parts, resistance to wear and corrosion are obtained.

  The special design of the Megator Lobe pump allows dry running, as the standard mechanical/lip - seal system is constantly lubricated. The same lubrication acts as a seal detector, allowing the user to react swiftly in case of any leaks occurring.

  Typical fluids handled with the Megator Lobe Pump are:

  Sludge with high dry-matter content, mud slurries, chemicals, centrifuge feed fluid, meat offal, cement slurry, gypsum, sauces with vegetables, marmalade etc.

  • Capacity up to 375m³/hr
  • Solids up to 61mm
  • Differential pressure up to 30 bar
  • Viscosity up to 1.000.000cp
  • Temperatures up to 450°C
  • Seal system: lip seals, double mechanical seals, single mechanical seals, stuffing box and a combination of these seal types.
  • Casing: FCD45, bronze, SUS316, SUS316L, Hastelloy B, Titanium, Monel, etc.
  • Rotors: Elastomer compounds, SUS316, bronze, Teflon, PVDF, MC nylon, Hastelloy B, etc.

  How a rotary lobe pump works.

  
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  Industrial Rotary Lobe Pumps

  Applications include Oil, Wastewater, Sludge, Chemicals, Asphalt, Excretions, Paints, and Polymers.

  Model	Inlet/ Outlet Dia.	Pressure bar g	Flow (litres/min)
  			Vane	960rpm	725rpm	580rpm	480rpm	380rpm	Per1rev
  MLP-L20	25	10	2	62	47	38	31	25	64cc
  MLP-L25	25	15	2	82	62	50	41	33	85cc
  MLP-L32	32	15	2	105	79	64	53	42	109cc
  MLP-L40	40	30	2	214	161	129	107	85	222cc
  MLP-L50	50	30	2	300	227	181	150	119	312cc
  MLP-L65	65	30	2	400	302	242	200	158	416cc
  MLP-L80	80	30	2		519	415	343	272	715cc
  MLP-L100	100	30	2		728	575	475	377	990cc
  MLP-L120	125	30	2		1037	830	687	544	1430cc
  MLP-L125	125	30	2		1506	1205	997	790	2077cc
  MLP-L150	150	30	2		2034	1627	1347	1066	2805cc
  MLP-L200	200	30	2			2978	2466	1953	5137cc
  MLP-L250	250	30	2			4172	3453	2733	7192cc

  
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  Sanitary Rotary Lobe Pumps

  Applications include Dairy, Bakery, Meats, Canned Foods, Beverages, Candy, Flavourings, Dressings and Cosmetics.

  Sanitary Pumps (Male/Ferrule)

  Model	Inlet/ Outlet Dia.	Pressure bar g	Flow (litres/min)
  			Vane	960rpm	725rpm	580rpm	480rpm	380rpm	Per1rev
  MLP-1S	23	15	2	92	69	56	46	37	95cc
  MLP-1.5S	35.7	15	2	135	102	82	68	54	140cc
  MLP-1.5SL	35.7	30	2	279	211	169	140	111	290cc
  MLP-2S	47.8	30	2	356	269	215	178	141	370cc
  MLP-2SL	47.8	30	2		428	343	284	225	590cc
  MLP-2.5SL	60.5	30	2		515	412	341	270	710cc
  MLP-3S	72.3	30	2		638	511	423	335	880cc

• FAQ's

  What precautions should be taken when handling abrasive slurries?
  Select a large pump, running at low speed. The circumferential speed of the rotor is very important, to minimize wear between rotor and casing use a hardened casing to create the best possible wear resistance, together with rotor materials that can withstand the abrasion.

  What precautions should be taken when handling high viscosity fluids?
  Make sure that the pump will be filled up. This is achieved by selecting a pump with large ports, which allows the fluid to fill the pump chambers. Running the pump at low speed gives the fluid enough time to enter the pump chambers. If a satisfactory degree of filling can not be obtained by gravity or pressuring the fluid source tank, an in-feed screw may be required. Install the pump as close as possible to the fluid source, avoiding unnecessary restrictions. If these issues are not addressed, the pump may cavitate which will increase wear and may inflict damage to the pump.

  Can the pump withstand dry running?
  The lobe pump may dry run, as there is no physical contact between rotors and casing. The seal chamber is filled with a lubricant, that will not let the seals dry run, but keep them lubricated at all times. Further to this the lubricant will transmit heat generated away from the seals.

  How can I minimize the pressure drop?
  Use long elbows, and large diameter pipes. Use as few elbows as possible. In certain cases lubricants can be added to the fluid, thereby decreasing the pressure drop. One should remember that the pipe system is a one-time cost - the increased running cost caused by high pressure is a continuous cost through the complete life span of the pump.