SNS940R42U8W2 three screw pump

SNtype three-spindle screw pump Triple-screw pump

SNS**0R*2U8W2 three screw pump
Application

For handling lubricating fluids. The fluids to be pumped must not contain any abrasive substances nor chemically attack the pump materials.

Main fields of application

Fuel oil firing/energy engneering:

For handling light and heavy fuel oils as well as residual and waste oils, e.g. as fuel oil, transfer, fuelling, ring-conduit and burner-operation pumps.

Hydraulics:

For booster and/or pumping hydraulic oils on mineral-oil basis or hydraulic lubricating liquids; e.g. as hydraulic presses, forging hammers, bale presses, chip-board presses, winches, hoists, variable-pitch propeller and rudder adjusting units, hatch hydraulics, rolling mill and machine tool hydraulics,

General industrial engineering/machine/heavy machine industry:

For handling lubricating, cooling, coolant, sealing, regulating and hydraulic oils, light and heavy fuel oils, diesel oils. fuels and thermal oils(cold);e.g. for steem, gas and water turbines as lubricating, sealing, regulating oil and jacking oil pumps, for compressors as lubricating, sealing and coolant oil pumps, for gear drives as lube-oil pumps, for diesel engines as lubricating and cooling oil as well as fuel pumps, for rolling mills as lube-oil and hydraulic pumps etc.

Marine/Offshore engineering:

For handling lubricating, cooling and hydraulic oils, light and heavy fuel oils, crude oils as well as fuels.

Machine-tool industry:

For handling cutting, grinding, deep-hole drilling oils and oil-in-water emulsions as well as hydraulic oils.

Tank farms:

For handling all lubricating fluids such as greases, oils, paints, fuels, polyols, isocyanates; e.g. as loading or unloading pumps.

Printing industry:

For handling gravure inks.

Chemical and petro-chemical as well as processing industry:

For handling all lubricating fluids such as oils(including crude oils), greases, paint, lacquers, ointments ,pastes, polyols, isocyanates, tar, bitumen, glycerin, glues, adhesive substances, resins, paraffins, waxes, water glass and also as pipeline pumps.

Paint/lacquer industry:

For handling paints, lacquers, resins, oil varnish and linseed oils.

Washing/cleansing agent industry:

For handling oils, greases, soaps and additives.

Paper/puld industry:

For handling viscose and pulp.

Food industry:

For handling molasses, glucose, sirup and vegetable oils.

 

Design：

Self-priming three-screw pump.

The hardened and ground spindles run in a replaceable casting insert.

The axial thrust acting on the flanks of the screw threads is compensated by balance pistons which-with all three spindles are arranged in the delivery chamber.

The idler spindles are turned hydraulically. The thread flanks merely transmit the torque resulting from the liquid friction and are consequently practically free of stress and not subject to any wear.

A groove ball bearing lubricated by the fluid to be pumped(with internal bearing design) respectively ab external, grease lubricated groove ball bearing serves for fixing the driving spindle.

A stuffing box or two shaft sealing rings or a maintenance-free unbalanced mechanical seal as required is used as shaft sealing. By means of a return pipe, the sealing chamber is connected with the suction chamber. Therefore, irrespectively of the delivery pressure, only the suction/inlet pressure always becomes effective at the shaft sealing.

Function:

Owing to a special profiling of the flanks of the screw threads, the three spindles form sealed chambers, the contents of which are axially and completely continuously shifted from the suction to the delivery side of the pump. There is no turbulence despite the rotational movement, and squeezing stresses are avoided by the constant volume in the chambers.

Noise/pulsation:

The structural design and mode of operation of the screw pump ensure a very low noise level and a nearly pulsation-free delivery.

Three screw pump is the common equipment in the field of industrial machinery, often used inconveying lubricating medium liquid. The device has a lot of advantages, take the SN three screw pump has many unique properties, it is these properties to ensure the equipmentwidely used in space.