Landustrie

For almost a century Landustrie is a leading company in designing, manufacturing, supplying, mounting and maintaining many types of Archimedean screw pump configurations.

With a fully automated screw pump selection program the optimum screw pump can be choosen for any particular application.

Applications:

• waste water treatment plants
• influent pumping stations
• waste water treatment plants
• intermediate pumping stations
• return sludge pumping stations
• irrigation projects
• drainage projects
• reclamation of wetlands
• circulation within aeration systems
• wild water tracks in fun parks
• industrial applications
• storm water applications
• power generator

Landy screw pumps can be supplied in steel as well as stainless steel and mounted in concrete or steel trough.
The screw pumps can be delivered as completely prefabricated units as well.

Features of Landy screw pump:

• open, clog-free, simple and robust construction
• high efficiency
• low maintenance
• low operational costs
• highly reliable
• long lifetime
• virtually no wear (no spare units required)
• automatic adjustment of the pump capacity as a function of the incoming flow
• operating in a wide range, with a capacity from 10 to 11.500 l/s and lift from 0 to 25 m
• changes in the capacity are easy and, if necessary, stepless
• insensitive to supply conditions and also (because of the low rpm) no problems with caviation

The Landy screw pump upper bearings are supplied as wall-mounted bearing or foot-mounted bearing.
The wall-mounted bearing gives following advantages:

• forces on civil construction will be better absorbed
• odour-tight separation between screw pump and the room in which the drive unit is installed

The the lower bearings are supplied in four different types:

• conventional grease lubricated 
• grease lubricated heavy duty 
• medium lubricated 
• Eco-friendly lower bearing.

Features of Landy 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
• no spare parts required
• lower investment costs
• corrosion-free cast iron housing
• 3-dimensional self-aligning
• no maintenance and grease costs
• high-performance seal

All our eco-friendly bearings can be fitted with a water-in-oil alarm system.
This system gives an alarm when certain amount of water or some other conducting medium has polluted the oil in the bearing housing.

The system can be fitted to new bearings as well as be retrofitted to existing bearings.our screw pumps can be equipped with a condition monitoring system.
This system on-line continuously supplies details about the upper and lower bearing.

Until today most screw pump installations are executed with V-belt transmissions drives.

However, this traditional application is outdated.

If a direct drive is applied the energy consuming and high maintenance V-belt transmission is no longer necessary.

This results in a saving of approx. 5%.

The direct coupled drive-unit, in combination with a frequency convertor, can be much easier fine-tuned to the actual supply of the treatment plant.

In other words no more energy than strictly necessary will be used.

On top of that other advantages will be accomplished by fine-tuning the screw pump capacity to the supply of the plant, such as a much better process control.

During erection of new screw pumps Landustrie often uses a casting mould for realizing the concrete trough.The advantage of this method is that a superior quality of concrete trough can be achieved.

Also concretting is less depending on weather conditions and craftsmanship.
Furthermore any type of grouting material can be used.

Because of this free choice of grouting material alos higher wear resistance is achieved.
This again will lead to energy savings; a wear resistant layer between the screw pump and the trough means a fixed clearance for the lifetime of the screw pump installation.
Increasing leak losses because of sand, gravel and other dirt will be a matter of the past.

A perfect trough is essential in order to build high efficient screw pumps.