Positive Displacement Pump

If you need to move fluid at a constant rate, the answer could be to use a positive displacement pump. This type of equipment is able to handle viscous fluids more efficiently than some other types of pump.

Tramspread supplies many Vogelsang pumps of this type to companies in Suffolk, Norfolk and across East Anglia. We can supply a wide range of modelsin varied sizes andwith different capacities and pressures, going up to a top capacity of 1,000 cubic metres per hour and a top pressure of 16 bar. The different pumps in the range can be used successfully with different types of liquid.

How Does a Positive Displacement Pump Work?

Thick and abrasive fluids flow more slowly than other types of liquid and also create a higher degree of resistance. Positive displacement pumps are often the preferred choice to move these fluids at a consistent pace, because of their efficiency in operating at lower speeds. These machines work mechanically, by expansion and contraction of the space in between elements of the pump. Because each motion displaces the same volume of liquid, this ensures an even rate of flow.

A rotary lobe pump is a type of PD pump which works by a circular motion, with two shafts which spin in opposite directions to one another. This creates a space on the suction side where the liquid can enter, before being spun round to the other side and discharged. Tramspread supplies rotary lobe pumps manufactured by leading company Vogelsang.

Where are PD Pumps Used?

There are various types of applications where rotary lobe pumps can be used effectively within the agricultural sector, such as spreading liquid manure and pumping from a tank. To ensure that manure provides the crops with exactly the right level of nutrients, it is important that the flow is consistent and accurate.

A rotary lobe pump can be calibrated to pump out liquid manure and digestate at the right speed and volume to prevent under or over-application. This will ensure that valuable nutrients are not wasted, and that the level of spreading is tailored to the requirements of the type of crop being grown and the soil on your farm, as shown by soil analysis. 

As well as being used to apply slurry to the soil and to carry out other tasks such as feeding, rotary lobe pumps can also be used for other applications. This includes use in biogas plants, where the pumps can be utilised for maceration and feeding the digester as well as for pumping. Wastewater is another sector where the pumps can be used.

Advantages of Rotary Lobe Pumps

One of the main advantages of rotary PD pumps is that they are excellent for pumping sludge, because they are constructed to cope with thick liquids containing abrasive materials such as heavy grit. Gentle action avoids damage to the pump’s components and keeps wear to a minimum while in use. There is no need to prime these pumps as they are self-priming, making them quick and easy to put in place, while another advantage is the fact that they can be run dry.

Choosing rotary pumps also reduces the need for maintenance. Vogelsang rotary lobe pumps are constructed so that they can be maintained while the pump is in place, without the need for disruption to connected piping. Reducing the time which needs to be spent on maintenance also saves on man-hours and the associated costs.

Vogelsang Pumps Supplied by Tramspread

Long-established firm Tramspread has built a strong reputation for manufacturing and supplying our own slurry equipment and supplying equipment from other leading manufacturers. We can supply a whole range of solutions for storing, handling and pumping all types of slurry to customers in Suffolk, Norfolk, Cambridgeshire, and Essex.

The Vogelsang rotary lobe pump brand is known for being particularly reliable and durable. All models in the range are built to be robust and wear-resistant, giving efficient performance and dealing with a range of applications.

Positive Displacement Pump – See our range of Vogelsang rotary lobe pumps.