The Working Principle of a Roots Blower Pump

Roots blower is a type of pump that is also sometimes referred to as booster pump or intermediate stage vacuum pump. It is a type of dry pump used for gas transfers. Being a dry pump, water or oil is never introduced in the pump gas. The pump makes use of mechanical means to transfer the gas. The roots blower pump is typically mounted on the inlet of some primary or backing pump like rotary vane, screw pump or claw pump. These pumps enhance or boost the overall performance of a primary pump thereby improving the pump down speed greatly. In fact, it has been found that the combination of a primary pump with the roots blower can lead to an approximate increase of 7 times in the pumping speed along with a 10-fold increase in the pressure compared to what is normally managed by a solo operating primary pump.

The roots blower functions as a unit of valve-less displacement compressor that does not have any internal compression. As the compression chamber gets into contact with outlet port, the compressed air smoothly flows back inside the housing directly from pressure side. Therefore, further compression occurs when the total volume of compression chamber decreases further along with continued rotation. The compression is carried out against a full counter-pressure. When roots blower is used in some high or super high vacuum system, it is located right between primary pump and another unit of diffusion high vacuum pump.

The distinct benefits of using roots blower have led many companies over the years to come forward and create their own versions. If you are looking to get a roots blower unit for your operations, you can certainly get it from a well known manufacturer. The roots blower pumps may also vary in their capacity from one model to another.

Types And Functionality of Chemical Pumps

A chemical pump is a specially designed pumping system that is used for moving different types of liquids. These pumps help to displace a certain volume of chemical either by physical or mechanical action. The chemical pumps just do not work with pressure alone but they disperse chemicals thus causing a smooth flow. Such a pressure is effectively caused by the resistance that is further added to this flow. Chemical pumps are used extensively in petrochemical industries, in food industries as well as in paints and varnish manufacturing centers. The different requirements for these pumps have led to the creation of diverse models of chemical pumps.
Chemical pumps can be broadly classified into two main variants, namely positive displacement pumps and rotodynamic pumps. The positive displacement pumps function by trapping or enclosing a certain amount of a chemical and forcing or displacing it into the pipe that is to be discharged. This whole process works together to help in transportation of chemical through the pump. On the other hand, the rotodynamic pump makes use of kinetic energy which can be added to such a pump for effective transportation of the chemical. The flow velocity gets increased and this adds kinetic energy to a pump, thereby helping to convert the energy into potential pressure.
In order to make sure that the transportation of chemicals is managed in the smoothest possible way, it is necessary to make use of a high quality chemical pump. With so many leading pump manufacturing companies coming to the fore with their own versions of these pumps, it may be hard to choose the best product. However, you need to focus on the specific goals that you want to achieve with these pumps and that can help you to make the best choice when you are looking to buy a chemical pump.

A Brief Look at the Functioning of Regenerating Blowers

A regenerative blower is a highly important form of pneumatic component that is used for a wide range of uses and functions. Regenerative blowers are highly efficient and user-friendly air handling equipment. They work as an effective tool for pushing substantially larger volumes of air at vacuum or a lower pressure. This makes regenerative blowers the perfect replacement for the standard vacuum pumps. While regenerative blowers work on a rather different working principle when compared to the vacuum pumps, they actually help in regenerating air molecules with non-positive displacement technique for creating pressure or vacuum. It is a very unique but highly effective way of working with air.


Regenerative blowers are also called ring compressors or side channel blowers. These names provide with a lot of hints about their overall physical construction. The basic operation associated with regenerative blowers follows the principle of direct drive design which is opposed to the gas engine belt or electric motor drive design. The impeller that comes with the monobloc is connected to electric motor shaft, rotating at speeds around 2900 rpm to 3500 rpm. With the rotation of the impeller, air gets captured between the blades and pushed within the channels. This is followed by a repetition of the whole process which ultimately leads it to create the vacuum strength or pressure strength.

The regenerating blowers are often used by engineers since they find them useful for a broad range of projects. Another great advantage of these devices is that they do not need frequent monitoring or maintenance. Regenerative blowers are also completely oil less which means that they do not include any complicated valve. They can also be mounted on any surface for use. Currently there are many leading companies all over the world that design and develop these regenerating blowers.