Archimedes Closed Screw Pumps http://bit.ly/p7R3Ln

Archimedes Closed Screw Pumps

Archimedes closed screw pumps essentially utilize the same operating principles as open pumps but are enclosed in a tube rather than an open trough

Amplify’d from www.enquip.com

Closed Screw Pumps

. Enclosed screw pumps essentially utilize the same operating principles as open pumps but are enclosed in a tube rather than an open trough.  Lakeside offers two models: one with a rotating outer tube and one with a stationary outer tube as pictured above.  Maximum angle is 45 degrees. Read more at www.enquip.com

 

See this Amp at http://bit.ly/p7R3Ln

Open screw Archimedes pumps http://bit.ly/nc2grq

Open screw Archimedes pumps

Open screw Archimedes pumps are normally placed into a concrete, semicircular "open" trough.

Amplify’d from www.enquip.com

Open Screw Pumps

. Open screw pumps are normally placed into a concrete, semicircular "open" trough.  The trough may be constructed at an angle of inclination of 22 to 40 degrees.  The screw pump itself is used for placing the grout in the trough.   Open screw pumps are the most economical screw pumps available. Read more at www.enquip.com

 

See this Amp at http://bit.ly/nc2grq

The Rebirth of Archimedes' Ancient Screw Pump http://bit.ly/pg4WKv

The Rebirth of Archimedes' Ancient Screw Pump

The Rebirth of Archimedes' Ancient Pump

Amplify’d from www.enquip.com

"The Rebirth of Archimedes' Ancient Pump"

Open Screw Pumps

. Open screw pumps are normally placed into a concrete, semicircular "open" trough.  The trough may be constructed at an angle of inclination of 22 to 40 degrees.  The screw pump itself is used for placing the grout in the trough.   Open screw pumps are the most economical screw pumps available.

Closed Screw Pumps

. Enclosed screw pumps essentially utilize the same operating principles as open pumps but are enclosed in a tube rather than an open trough.  Lakeside offers two models: one with a rotating outer tube and one with a stationary outer tube as pictured above.  Maximum angle is 45 degrees. Read more at www.enquip.com

 

See this Amp at http://bit.ly/pg4WKv

Why Use a Archimedean Screw Pump? http://bit.ly/oTheFf

Why Use a Archimedean Screw Pump?

The use of Archimedean Screw Pumps in wastewater treatment plants has gained wide acceptance because of their efficiency in handling large volumes of liquid at relatively low lifts. The overall advantages are:

Amplify’d from www.enquip.com

Why Use a Screw Pump?

The use of Screw Pumps in wastewater treatment plants has gained wide acceptance because of their efficiency in handling large volumes of liquid at relatively low lifts.  The overall advantages are:

A.    The Screw Pump has the ability to handle variable capacity with a simple constant speed drive. B.    The Screw Pump operates at or above 70% efficiency for 2/3 of its operating capacity. C.    There is no increase in pumping head caused by deep influent wells which are required for centrifugal pumps. D.    There is less head required with a Screw Pump which means lower horsepower because there are no friction losses         created by pipe, valves, and fittings. E.    The Screw Pump is a true non-clog operation; pre-screening is not required. F.    The simplicity of the Screw Pump installation provides reliable operation with little operator attention.

See more at www.enquip.com

 

See this Amp at http://bit.ly/oTheFf

Archimedean open screw pump Features and Benefits http://bit.ly/qCzfSU

Archimedean open screw pump Features and Benefits

Features and Benefits of Archimedean open screw pump are

Amplify’d from www.water.siemens.com

Features and Benefits

Pre-screening or grinding not required - facilitates maintenance and reduces excavation and service cost

Inlet structures are not required - simpler, more economic operation

Variable pumping at constant speed - pumps liquid at the rate it is received, does not require extensive speed control or wet well storage

Low-speed operation - lengthens bearing life and provides gentle pumping action for return sludge or oily wastewater

Virtually maintenance-free - requires only lubrication

Flat efficiency curve - maintains high efficiency over broad range of flows

High flow/low lift - available in a variety of sizes and capacities to meet flows up to 100,000 gpm and lifts up to 40 feet

See more at www.water.siemens.com

 

See this Amp at http://bit.ly/qCzfSU

Archimedean open screw pump http://bit.ly/qNzgLD

Archimedean open screw pump

Archimedean open screw pump are your reliable, simple way to lift water

Amplify’d from www.water.siemens.com

Screw Pumps

screw pumps are your reliable, simple way to lift water.

They are designed and manufactured for optimal operational performance, convenient maintenance, and long-lasting quality, and our screw pumps are available in sizes to fit your application.

See more at www.water.siemens.com

 

See this Amp at http://bit.ly/qNzgLD

Benefits of Archimedean enclosed screw pump http://bit.ly/pevsi8

Benefits of Archimedean enclosed screw pump

Archimedean enclosed screw pump Benefits are

Amplify’d from www.water.siemens.com

Benefits

Minimizes power costs

Simplified maintenance

Shutdown not required for lubrication

Minimized downtime

Prolonged bearing life

Variable speed motors not required

Hard debris is flushed through

Jamming eliminated

Minimizes required land and concrete usage

Performance unaffected by climate

Eliminates sun arcing and shelter requirements

Improved personal safety

Environmentally attractive

Odors and splashing contained

See more at www.water.siemens.com

 

See this Amp at http://bit.ly/pevsi8

Features of Archimedean enclosed screw pump http://bit.ly/rtMvct

Features of Archimedean enclosed screw pump

Archimedean enclosed screw pump Features are

Amplify’d from www.water.siemens.com

Features

85% efficient and virtually 100% volumetric efficient

Bearings isolated from liquid

Pump output varies directly with inlet liquid level

Integral cylinder and flights

38° and 45° installation angles

Self aligning bearings

Totally enclosed cylinder greatly improving factors of personal safety

Factory Installation is available

See more at www.water.siemens.com

 

See this Amp at http://bit.ly/rtMvct

Archimedean Enclosed Screw Pump Features http://bit.ly/pOr03Q

Archimedean Enclosed Screw Pump Features

Features of Archimedean Enclosed Screw Pump are

Amplify’d from www.water.siemens.com

Features

85% efficient and virtually 100% volumetric efficient

Bearings isolated from liquid

Pump output varies directly with inlet liquid level

Integral cylinder and flights

38° and 45° installation angles

Self aligning bearings

Totally enclosed cylinder greatly improving factors of personal safety

Factory Installation is available

Enclosed Screw Pump. Read more at www.water.siemens.com

 

See this Amp at http://bit.ly/pOr03Q

Archimedean Enclosed Screw Pump http://bit.ly/nbJv4t

Archimedean Enclosed Screw Pump

Archimedean Enclosed Screw Pump provides the most efficient and reliable means of lifting large flows of liquid and liquid-solid mixtures with pump efficiencies as high as 85%, volumetric efficiency virtually 100%.

Amplify’d from www.water.siemens.com

Enclosed Screw Pump

Provides the most efficient and reliable means of lifting large flows of liquid and liquid-solid mixtures with pump efficiencies as high as 85%, volumetric efficiency virtually 100%.

Internalift® Enclosed Screw Pumps Offer:  - Flow rates up to 23,000 gpm per pump  - Installation angles up to 45°  - 85% efficiency rating Read more at www.water.siemens.com

 

See this Amp at http://bit.ly/nbJv4t

Archimedes / Screw Pumping http://bit.ly/pwAEfz

Archimedes / Screw Pumping

Archimedes screws / screw pumps are commonly used in sewage treatment plants because they cope well with varying rates of flow and suspended solids.

Amplify’d from www.water.siemens.com

Archimedes / Screw Pumping

Originally applied for drainage and irrigation, today Archimedes screws / screw pumps are commonly used in sewage treatment plants because they cope well with varying rates of flow and suspended solids.

Known for their high efficiency and high volume capability, the screw pump is a simple mechanical device consisting of a partially or fully enclosed cylinder and a continuous screw extending the length of the cylinder, thus forming lifting chambers.  By placing the lower end in water and revolving the screw, water is raised to the top.  Read more at www.water.siemens.com

 

See this Amp at http://bit.ly/pwAEfz

Archimedean screw pumps Eco-friendly lower bearing http://bit.ly/oLvAuS

Archimedean screw pumps Eco-friendly lower bearing

Features of the Eco-friendly lower bearing Archimedean screw pumps

Amplify’d from www.deritend.co.uk

Features of the Eco-friendly lower bearing:

Eco-friendly lubricated to lifetime of the bearing No grease pump and grease lines required, easier to install Exchangeable with existing bearings Completely enclosed unit Maintenance & grease free Lower investment costs Corrosion-free cast iron housing 3-dimensional self-aligning High-performance seals

See more at www.deritend.co.uk

 

See this Amp at http://bit.ly/oLvAuS

Archimedean screw pumps Lower Bearings http://bit.ly/nN1HWP

Archimedean screw pumps Lower Bearings

Lower bearings of Archimedean screw pumps are supplied in four different types

Amplify’d from www.deritend.co.uk

Lower bearings are supplied in four different types:

Conventional grease lubricated Grease lubricated heavy duty Medium lubricated Eco-friendly lower bearing. Read more at www.deritend.co.uk

 

See this Amp at http://bit.ly/nN1HWP

Archimedean screw pumps Upper Bearings

Upper Bearings of Archimedean screw pumps, can be foot or wall mounted

Amplify’d from www.deritend.co.uk

Screw Pump Bearings

Upper Bearings, foot and wall mounted, can be completely refurbished and can be specified to suit individual applications – the wall mounted version gives excellent odour-tight separation between the screw pump channel and drive compartment and is a must for dirty water applications. Read more at www.deritend.co.uk

 

See this Amp at http://bit.ly/nF1UAE

Archimedean screw pumps Upper Bearings http://bit.ly/nF1UAE

Archimedean screw pumps are available in either steel or stainless steel http://bit.ly/oLOOYQ

Archimedean screw pumps are available in either steel or stainless steel

Archimedes screw pumps are available in either steel or stainless steel; they can be mounted in a concrete or steel trough or delivered completely prefabricated

Amplify’d from www.deritend.co.uk

screw pumps are available in either steel or stainless steel; they can be mounted in a concrete or steel trough or delivered completely prefabricated. All screw pumps are designed by means of a computer aided calculation programs. Read more at www.deritend.co.uk

 

See this Amp at http://bit.ly/oLOOYQ

Archimedes Type Screw Pumps Applications include http://bit.ly/mTShvA

Archimedes Type Screw Pumps Applications include

Archimedes Screw Pumps Applications include

Waste water treatment plants

Effluent pumping stations

Intermediate pumping stations

Amplify’d from www.deritend.co.uk

Applications include:

Waste water treatment plants Effluent pumping stations Intermediate pumping stations Return sludge pumping stations Irrigation projects Drainage projects Industrial applications Storm water applications

Deritend screw pumps are available in either steel or stainless steel; they can be mounted in a concrete or steel trough or delivered completely prefabricated. All screw pumps are designed by means of a computer aided calculation programs.

See more at www.deritend.co.uk

 

See this Amp at http://bit.ly/mTShvA

Archimedes Type Screw Pumps http://bit.ly/nY4kAx

The Archimedes type screw pump is one of the simplest, yet most efficient and reliable, methods of moving large volumes of water and slurry over short distances.

Amplify’d from www.deritend.co.uk

Archimedes Type Screw Pumps

The Archimedes type screw pump is one of the simplest, yet most efficient and reliable, methods of moving large volumes of water and slurry over short distances. Screw pumps are very often used for heavy duty applications, sometimes pumping over 1,000 litres a second, making it vital that an expert team is on hand to provide essential service and maintenance.

See more at www.deritend.co.uk

 

See this Amp at http://bit.ly/nY4kAx

Archimedes screw generator on BBC News http://bit.ly/reQHKS

Archimedes screw generator on BBC News

Archimedes screw generator is featured as most popular stories now on BBC News

Amplify’d from news.bbc.co.uk

Archimedes drives river generator

About 1.5 tonnes of water passes through the screw a second

An activity centre on Dartmoor is generating electricity using a device which dates back to ancient Greece.

The hydro-electric generator at the River Dart Country Park, near Ashburton, employs an Archimedes screw.

Water flows through the screw to turn it and the motion turns a turbine to produce electricity.

About 1.5 tonnes of water passes through the screw a second and the screw in turn allows fish and eels to pass through it safely.

Fish migration

The Environment Agency said the River Dart was an important salmon river, so the ability for fish to pass through the screw has been described by those involved in the project as an important aspect of its green credentials.

Mark Simpson, from the River Dart Country Park, said: "There are so many sites in the South West where small hydro-power schemes like this could be utilised.

"This screw has proved that it is a very environmentally-friendly with regards to fish and migrating salmon."

The turbine will be able to produce an estimated £35,000-worth of electricity a year.

Archimedes was a Greek mathematician, philosopher and inventor who lived from about 287BC to 212BC.

He wrote important works on geometry, arithmetic and mechanics and is credited with inventing the hydraulic screw for raising water from a lower to higher level.

The country park generator uses a reversed screw, with water running along it from higher to lower ground. Read more at news.bbc.co.uk

 

See this Amp at http://bit.ly/reQHKS

Lower bearings for Archimedes screw pumps

The lower bearing of an Archimedes screw pump is a very important component. Its role is to keep the pump aligned and to maintain the accurate gap between screw and trough.

Amplify’d from www.spaansbabcock.com

Lower bearings

The lower bearing of a screw pump is a very important component. Its role is to keep the pump aligned and to maintain the accurate gap between screw and trough. Although it carries only a small portion of the load of a screw pump, it has to do its duty under harsh conditions: submerged in dirty water. Spaans Babcock has developed during the last 50 years a large range of lower bearings; the most used types are shown below:

Spaans Babcock LGO (conventional lower bearing)

The traditional lower bearing is based on a non-rotating stub shaft that is rigidly mounted to the bottom of the inlet and a bronze bush sleeve bearing, mounted to the lower end of the screw pump, that is rotating around the stub shaft to ensure that eventual wear will occur evenly distributed.

A very small amount of grease is constantly pumped into the bearing by a grease pump that is installed at the top.

See more at www.spaansbabcock.com

 

See this Amp at http://bit.ly/pJCRli

Lower bearings for Archimedes screw pumps http://bit.ly/pJCRli

Upper bearing for Archimedes screw pumps http://bit.ly/pJ4xeL

Upper bearing for Archimedes screw pumps

The Archimedes screw pump is suspended from the upper bearing. This means that almost all the load is hanging from the top!

Amplify’d from www.spaansbabcock.com

Upper bearing

The screw pump is suspended from the upper bearing. This means that almost all the load is hanging from the top! The Spaans Babcock upper bearings therefore are specially designed to take up both the axial force as well as the radial force.

The Spaans Babcock standard upper bearings are pedestal mounted because installation and pre-alignment are much easier than with the wall-mounted upper bearings.

See more at www.spaansbabcock.com

 

See this Amp at http://bit.ly/pJ4xeL

Protective Epoxy Coatings for Archimedes screw pumps http://bit.ly/peD1ho

Side profiles of Archimedes screw pumps http://bit.ly/q1AjRp

Material of construction for Archimedes screw pumps http://bit.ly/r29KrO

Material of construction for Archimedes screw pumps

Material of construction for Archimedes screw pumps are generally made of normal mild steel with a special epoxy coating.

Amplify’d from www.spaansbabcock.com

Material of construction

Screw pumps are generally made of normal mild steel with a special epoxy coating. A suitable coating system will be selected for each specific application. Spaans Babcock can also manufacture screw pumps of all sizes in stainless steel. References are available on request.

See more at www.spaansbabcock.com

 

See this Amp at http://bit.ly/r29KrO

Rotation Speed of Archimedes screw pumps

Rotation Speed of Archimedes screw pumps may not exceed 108% of its ‘optimum design speed’ – if that limit is exceeded the water will be thrown out of the trough and pump efficiency will drop.

Amplify’d from www.spaansbabcock.com

Rotation Speed

Each specific pump has its own optimum speed. Spaans Babcock uses the formula of ir. Muyskens to determine the optimum speed. Although a minor variation in speed is possible, the speed may not exceed 108% of its ‘optimum design speed’ – if that limit is exceeded the water will be thrown out of the trough and pump efficiency will drop.

See more at www.spaansbabcock.com

 

See this Amp at http://bit.ly/o9rOAA

Rotation Speed of Archimedes screw pumps http://bit.ly/o9rOAA

Pitch for Archimedes screw pumps http://bit.ly/oD17hN

Pitch for Archimedes screw pumps

The pitch of Archimedes screw pump is another parameter which will affect the capacity of the Archimedean screw pump

Amplify’d from www.spaansbabcock.com

Pitch The pitch is another parameter which will affect the capacity of the pump; Spaans Babcock does not follow a fixed rule (e.g.: pitch=D) however elects different pitches for various angles.

See more at www.spaansbabcock.com

 

See this Amp at http://bit.ly/oD17hN

Installation Angle of Archimedes screw pumps http://bit.ly/nY3bP1

Number of Flights on Archimedes screw pumps http://bit.ly/now3RI

Number of Flights on Archimedes screw pumps

The effective filling between the screw blades increases with the number of flights of Archimedes screw pumps.

Amplify’d from www.spaansbabcock.com

Number of Flights

The effective filling between the screw blades increases with the number of flights. However the price of the pump will also be influenced by the number of flights. For some situations a 1-flight screwpump will be sufficient.

For each situation Spaans Babcock will search the optimum solution!

See more at www.spaansbabcock.com

 

See this Amp at http://bit.ly/now3RI

Installation Angle of Archimedes screw pumps

Archimedes screw pumps has standardized Installation angles at 30º, 35º and 38º

Amplify’d from www.spaansbabcock.com

Installation Angle

As you can see from the simplified sketch below: the lower the angle of inclination with the horizontal axis, the better the effective filling >ergo> the better the pump efficiency. However, when the required lift is rather high, we need to increase the angle in order to keep deflection of the screw within allowable tolerances.

Spaans Babcock has standardized angles at 30º, 35º and 38º. Other angles are possible on request or recommendation from Spaans Babcock but will always be between 22º and 40º. Read more at www.spaansbabcock.com

 

See this Amp at http://bit.ly/nY3bP1

D/d = Outside diameter and Centre tube diameter of Archimedes screw pump http://bit.ly/rfKBZ3

D/d = Outside diameter and Centre tube diameter of Archimedes screw pump

The outside diameter of the Archimedes screw pump in combination with the diameter of the centre tube are essential factors for the capacity of the Archimedean screw pump.

Amplify’d from www.spaansbabcock.com

D/d = Outside diameter and Centre tube diameter

The outside diameter of the screw pump in combination with the diameter of the centre tube are essential factors for the capacity of the pump. For long screw pumps a larger centre tube will be required (figure c) to control the deflection, but this will have an effect on the effective capacity.

See more at www.spaansbabcock.com

 

See this Amp at http://bit.ly/rfKBZ3

The Gap between the Archimedes Screw Pump flights and the Archimedean Screw Pump trough http://bit.ly/qiz9QU

The Gap between the Archimedes Screw Pump flights and the Archimedean Screw Pump trough

The Archimedes screw, suspended between the upper and lower bearing, is rotating above the trough with a minimal gap of only a few millimetres between the flights and the trough.

Amplify’d from www.spaansbabcock.com

The Gap

The screw, suspended between the upper and lower bearing, is rotating above the trough with a minimal gap of only a few millimetres between the flights and the trough. Some water will flow back through this gap, however this is marginal as long as the gap remains within allowable limits. The smaller the gap, the better the pump efficiency.

On the other hand the gap must allow for some deflection of the pump body! The optimum gap depends on the size of the pump (a large pump requires a larger gap) but is always in between 4 and 8 mm. In order to maintain an even and accurate gap along the total length of the screw it is important that the deflection of the screw pump is kept to a minimum.

See more at www.spaansbabcock.com

 

See this Amp at http://bit.ly/qiz9QU

Performance of an Archimedes Screw Pump

The actual performance of an Archimedean Screw Pump depends on several parameters which are all related to each other. The selection of the right combination of these parameters therefore is an essential but specialized task since it will be decisive for the performance and life-time of the pump.

Amplify’d from www.spaansbabcock.com

The actual performance of a Screw Pump depends on several parameters which are all related to each other. The selection of the right combination of these parameters therefore is an essential but specialized task since it will be decisive for the performance and life-time of the pump. But do not fear! Spaans Babcock will make the right selection for you. You just tell us the required capacity and lift.

See more at www.spaansbabcock.com

 

See this Amp at http://bit.ly/qbzqLJ

Performance of an Archimedes Screw Pump http://bit.ly/qbzqLJ

Motor-Gearbox connection for Archimedes screw pumps

The connection of the electric motor and the gearbox for Archimedes screw pumps can be,direct connection or v-belt connection

Amplify’d from www.spaansbabcock.com

Motor-Gearbox connection

The connection of the electric motor and the gearbox can be:

direct connection  v-belt connection

The advantage of the direct connection (with a flexible coupling or fluid coupling between motor and gearbox) is that it does not require re-adjustment. The disadvantage is that speed-reduction (= speed of the screw pump) can only be done within the available range of reduction ratios from the gearbox supplier. The advantage of the v-belt connection is that a first reduction can be achieved before entering the gearbox. The actual outgoing screw speed can be exactly matched to the theoretical optimum.

See more at www.spaansbabcock.com

 

See this Amp at http://bit.ly/pJ08Gi